Hydrogen Sulfide in Aqueous Solvents 79 COHPONENTS… · extensively studied during the recent years because aqueous solutions of ... H2S; [7783-06-4] 2. Carbon dioxide; CO 2; [124-38-9]

Hydrogen Sulfide in Aqueous Solvents 79

COHPONENTS:1. Hydrogen sulfide; H2S; [7783-06-4]

2. Carbon dioxide; C02; [124-38-9]

3. Water; H20; [7732-18-5]

4. Alkanolamines

EVALUATOR:Peter G. T. Fogg',Department of Applied Chemistryand Life Sciences,Polytechnic of North London,Holloway, London N7 8DB, U.K.

February 1987

CRITICAL EVALUATION:

Systems containing hydrogen sulfide, water and alkanolamines have beenextensively studied during the recent years because aqueous solutions ofalkanolamines are widely used to remove hydrogen sulfide from industrial gasmixtures. Much of this work has been carried out by Mather and his co-workers.Several models of the behaviour of alkanolamine/water systems in the presence ofhydrogen sulfide and/or carbon dioxide have been published (1-10). Some sets ofmeasurements (10-14) have been partially correlated with the model developed byKent and Eisenberg (8). Improved models have been published by Deshmukh andMather (9), and by Dingman et al. (10). Predictions based upon models arestill subject to some uncertainty.

Three component systems containing hydrogen sulfide, water and alkanolamines.

In all hydrogen sulfide/alkanolamine/water systems which have been investigatedthe mole ratio of hydrogen sulfide to alkanolamine increases with partialpressure of hydrogen sulfide and decreases with increase in temperature andconcentration of alkanolamine.

2-Aminoethanol (monoethanolamine); C2H7NO; [141-43-5]

Data published by eight groups (1, 15-21) have been compiled. Themeasurements were made over a range of concentrations of MEA (monoethanolamine)from 0.6 to 5 mol dm- 3 , pressures of hydrogen sulfide from 7 x 10- 7to 42 bar and temperatures from 288 to 413 K. The different sets ofmeasurements tend to complement each other and, where there is overlap, there islittle evidence of inconsistency between one set and another. Lawson and Garst(20) have shown that their data for absorption in 15 wt% solution of MEA (2.5mol dm- 3

) is in good agreement under most conditions with unpublished datacommunicated to them by J.P. Bocard and with that published by Muhlbauer andMonaghan (17), Leibush and Shneerson (16), and, Jones et a1. (18). Howeverthey have shown that there is disagreement with the measurements by Muhlbauerand Monaghan at 373 K and pressures below 0.12 bar and with measurements byLeibush and Shneerson at 323 K at partial pressures below 0.0014 bar. Theevaluator has noted a discrepancy between the two measurements in each of thefollowing pairs of measurements:

Authors

Riegger et a1. (15)Lee et a1. (19)

Jones et a1. (18)Lawson & Garst (20)

Lawson & Garst (20)Isaacs et a1. (21)

Concentration of MEA T/K PH 2S Mole ratio/ mol dm- 3 /bar H2S / MEA

5 318.15 0.033 0.4535 313.15 0.042 0.435

2.4 (15.3 wt%) 373.15 0.0089 0.0662.4 (15.2 wt%) 373.15 0.0075 0.0793

2.4 (15.2% ) 373.15 0.00041 0.01432.5 373.15 0.00031 0.0210

In the case of the last pair of measurements the difference is too great to bedue solely to the slight difference in concentrations of MEA.

2,2'-Iminobisethanol (diethano1amine); C4HllN02; [111-42-2]

Five sets of measurements on this system have been compiled (1, 11, 16,20, 22). Data reported by Bottoms (23) were in graphical form and have not beencompiled. Concentrations of DEA (diethanolamine) range from 0.5 to 5 mol dm- 3

,

temperatures from 288 to 422 K and partial pressures of hydrogen sulfide from1.5 x 10- 5 bar to 37 bar. The general pattern of data is very similar tothat for the monoethanolamine system. Different sets of measurements tend tocomplement each other and there is usually good agreement when measurementsoverlap. Lawson and Garst (20) have compared their measurements of solubilities

80 Hydrogen Sulfide in Aqueous Solvents


2. Carbon dioxide; C02; [124-38-9]

3. water; H20; [7732-18-5]

4. Alkanolamines


EVALUATOR:Peter G.T. Fogg,Department of Applied Chemistryand Life Sciences,Polytechnic of North London,Holloway, London N7 8DB, U.K.

February 1987

in a 25 wt% solution of DEA and demonstrated that they are consistent with datafor 298 K to 333 K given by Atwood et a1. (1), Lee et a1. (31) and alsohitherto unpublished data in a private communication from J.P. Bocard. Lal eta1. (11) have shown that their measurements of solubilities in DEA solution ofconcentration 2.0 mol dm- a at 313 K are compatible with those of Lawsonand Garst in a solution of concentration 2.45 mol dm- a at 311 K. Thecompiler has noted the following discrepancy between other published data:

Authors

Atwood et a1. (1)Lee et a1. (22)

Concentration of DEA

/ mol dm- a

4.9 (50 wt%)5.0

322 0.0476323.15 0.0432

Mole ratio

H2S / MEA

0.1530.205

2-(2-Aminoethoxy)ethanol (dig1yco1amine); C4HllN02; [929-06-6]

Martin et a1. (24) have reported measurements of the absorption ofhydrogen sulfide by 60 wt% aqueous solutions of diglycolamine at temperaturesfrom 323 to 373 K and partial pressures of 0.04 to 17.3 bar. Dingman et a1.(10) have reported measurements by 65 wt% solutions at temperatures from 311 to355 K and partial pressures from 3 x 10- 5 to 1.8 bar. The two sets ofmeasurements are consistent with each other in the pressure range over whichmeasurements overlap i.e. 0.04 to 1.8 bar. There is some scatter ofmeasurements at very low pressures close to the minimum pressure.

1,1 '-Iminobis-2-propanol (diisopropano1amine); C6H15N02; [110-97-4]

Absorption in aqueous solutions of diisopropanolamine of concentration2.5 mol dm- a at 313 and 373 K and pressures from 0.02 to 32 bar wasmeasured by Isaacs et a1. (25). No other measurements on this system areavailable for comparison but there is no reason to doubt the reliability of thisset of measurements. These authors have also measured absorption in solutionscontaining tetrahydrothiophene, 1,1-dioxide (su1fo1ane) (26) in addition todiisopropanolamine. These measurements also appear to be reliable but again noother sets of measurements are available for comparison.

2,2'-(Methylimino)bisethanol (methy1diethano1amine); C5HlaN02; [105-59-9]

Jou et a1. (12) measured absorption in solutions of methyldiethanolamineat concentrations from 1.0 to 4.3 mol dm- a at 298 to 393 K and2.1 x 10- 5 to 19.6 bar. A consistent set of data was obtained and thereis no reason to doubt the reliability of these measurements. No othermeasurements are available for comparison.

2,2' ,2"-Nitrilotrisethanol (triethanolamine); C6H15NOa; [102-71-6]

Atwood et a1. (1) measured absorption of hydrogen sulfide by 1 to3.5 mol dm- a (15 to 50 wt%) aqueous solutions of TEA (triethanolamine) attemperatures from 300 to 333 K and pressures from 4 x 10-6 to 0.92 bar.Jou et a1. (13) measured absorption by solutions containing from 2 to5 mol dm- a of TEA at temperatures from 298 to 398 K and partial pressuresfrom 1.2 x 10- 4 to 62.7 bar. In the range of conditions in which themeasurements overlap there is a good correlation between the two sets ofmeasurements except for the following discrepancy:



2. Carbon dioxide; CO 2 ; [124-38-9]

3. Water; H20; [7732-18-5]

4. Alkanolamines


EVALUATOR:

Peter G.T. Fogg~

Department of Applied Chemistryand Life Sciences,Polytechnic of North London,Holloway,London N7 8DB, U.K.

February 1987

Authors

Atwood et a1. (1)Jou et a1. (13)

Concentration of TEA T/K

I mol dm- 3

2 (30 wt%) 310.92 323.2

0.0007570.000683

Mole ratio

H2S I MEA

0.01240.0133

~ component systems of hydrogen sulfide, carbon dioxide, water andalkanolamine.

These systems were briefly investigated by Leibush & Schneerson (16). Thefirst detailed study was by Muhlbauer & Monaghan in 1957 (17). In each systemthere is the possibility of varying the partial pressure of each gas, thetemperature and the concentration of alkanolamine. Measurements by differentworkers tend to complement each other with different groups having measuredabsorption under different sets of conditions. Direct comparison of one set ofmeasurements with another is, in many cases, not possible. In all cases themole ratio in solution of hydrogen sulfide to alkanolamine increases withpartial pressure of hydrogen sulfide. It decreases with increase in temperatureand concentration of alkanolamine and also with partial pressure of carbondioxide. In the same way the mole ratio of carbon dioxide to alkanolamineincreases with partial pressure of carbon dioxide and decreases with increase intemperature, concentration of alkanolamine and partial pressure of hydrogensulfide.

2-Aminoethanol (monoethano1amine); C2H7NO; [141-43-5]

Authors Range of measurements

Cone. of MEA T/K PH2S/bar PCo2 /bar

Imol dm- 3

Muhlbauer & Monaghan ( 1 7 ) 2.4 - 2.6 298-373 0.0001 0 - 1.7- 1.3

Jones et a1. (18 ) 2.5 313-393 0.0015 0.0019(15.3 wt%) - 2.0 - 4.7

Lee et a1. (27) 5.0 313-373 0 - 34.2 o - 55.6

Lawson & Garst (20) 2.5 - 5 298-393 0 - 2.9 0 - 2.3(15.2; 30 wt%)

Lee et a1. ( 1 4 ) 2.5 313-373 o - 60 o - 70

Nasir & Mather (28) 5.0 373 0.00013 0.00002- 0.042 - 0.030

Isaacs e t a1. (26) 2.5 373 o - 0.034 0.00003- 0.014

Lee et a1. (14) have compared their own measurements with those of Muhlbauer andMonaghan and those of Jones et a1. for a concentration of MEA of 2.5 mol dm- 3

, atemperature of 373.15 K, partial pressures of hydrogen sulfide of 0.005 to 0.18bar and partial pressures of carbon dioxide of 0.0009 to 0.17 bar. Agreement iswithin 10% under some conditions but there are wide differences under otherconditions. This may be seen in the following examples given by Lee et a1.:

HSO&-O



2. Carbon dioxide; C02; [124-38-9)

3. Water; H20; [7732-18-5)

4. Alkanolamines


February 1987


Mole ratio in solution PH2S /bar Pco/barC02!MEA H2 S/ MEA ref (14) , (17) , (18 ) ref (14) , (17 ) (18 )

0.1 0.1 0.044 0.051 0.037 0.007 0.00750.2 0.3 0.62 0.57 0.19 0.220.3 0.1 0.15 0.15 0.14 0.20 0.25 0.230.4 0.2 1.02 0.60 1 .30 0.80

Lawson and Garst contrasted their measurements for 2.4 mol dm- 3 (15 wt%) at373 K with those of Muhlbauer and Monaghan. They noted that Muhlbauer andMonaghan's measurements of the partial pressures of hydrogen sulfide and carbondioxide tend to be higher than their own values and than those of Jones et a1.for similar concentrations of gases in solution. They pointed out that thisdiscrepancy was greater at low gas concentrations than at higher concentrations.

2,2'-Iminobis-ethanol

Authors

Lee et a1. (29)

Lawson & Garst (20)

Lal et a1. (11)

(diethano1amine); C4 Hll N02; [111 -42-2)

Cone. of DEA T/K PH2s /bar Pco2 /bar

/mol dm- 3

2.0 - 3.5 323-373 0.006 0.002-16.5 - 57.6

2.4 (25 wt%) 311-394 0.00013 0 - 22.9- 4.9 (50 wt%) -22.0

2.0 313-373 0.0006 o - 0.065- 0.048

Lal et a1. showed that the solubilities at 313 K, in the absence of carbondioxide, were consistent with data given by Lawson and Garst. In the presenceof carbon dioxide there was poor correlation with predictions from the modelpublished by Kent and Eisenberg (8).

1,1 '-Iminobis-2-propanol (diisopropano1amine); C6H1SN02; [110-97-4)

This system was investigated by Isaacs et a1. (30) and tables of smootheddata have been prepared. No other measurements on this system are available forcomparison but there is no reason to doubt the reliability of this smootheddata.

2-(2-Aminoethoxy)ethanol (dig1yco1amine); C4HllN02; [929-06-6)

This system was investigated by Dingman et a1. (10). No othermeasurements of the four component system are available for comparison. Howeverthe data for the system when one or other of the gases is at zero concentrationare consistent with data for the three component systems published by Martinet a1. (24).

References

1. Atwood, K.; Arnold, M.R.; Kindrick, R.C.Ind. Eng. Chem. 1957, 49, 1439-44.

2. Astarita, G.; Gioia, F.; Balzano, C. Chem. Eng. Sci. 1965, 20, 1101-5.

3. Astarita, G.; Savage, D.W. Chem. Eng. Sci. 1982, 37, 677-86.

4. Danckwerts, P.V.; McNeil, K.M. Trans. Inst. Chem. Eng. 1967, 45,T32-T49.



2. Carbon dioxide; co2 ; [124-38-9)

3. Water; H20; [7732-18-5)

4. Alkanolamines



February 1987

5. Klyamer, S.D. Gazov. Prom. 1971, 16 (9), 38-42.

6. Klyamer, S.D.; Kolesnikova, T.L. Zhur. Fiz. Khim. 1972, 46, 1056.

7. Klyamer, S.D.; Kolesnikova, T.L.; Rodin, Yu.A.Gazov. Prom., 1973, 18 (2), 44-48.

8. Kent, R.L.; Eisenberg, B. Hydrocarbon Processing 1976, 55 (2), 87-90.

9. Deshmukh, R.D.; Mather, A.E. Chem. Eng. Sci. 1981, 36, 355-362.

10. Dingman, J.C.; Jackson, J.L.; Moore, T.F.Proc. 62nd Annual Convention of the Gas Processors Association 1983,256-68.

11. Lal, D.; otto, F.D.; Mather, A.E. Can. J. Chem. Eng. 1985, 63, 681-5.

12. Jou, F-Y.; Mather, A.E.; otto, F.D.Ind. Eng. Chem. Process Des. Dev. 1982, 21, 539-44.

13. Jou, F-Y.; Mather, A.E.; otto, F.D. Can. J. Chem. Eng. 1985, 63,122-5.

14. Lee, J.I.; Otto, F.D.; Mather, A.E. Can. J. Chem. Eng. 1976, 54, 214-9.

15. Riegger, E.; Tartar, H.V.; Lingafelter, E.C.J. Amer. Chem. Soc. 1944, 66, 2024-7.

16. Leibush, A.G.; Shneerson, A.L. J. Applied Chem. USSR 1950, 23, 149-57.

17. Muhlbauer, H.G.; Monaghan, P.R. Oil & Gas J. 1957, 55 (17), 139-45.

18. Jones, J.H.; Froning, H.R.; Claytor, E.E. Jr.J. Chem. Eng. Data 1959, 4, 85-92.

19. Lee, J.I.; Otto, F.D.; Mather, A.E. Can. J. Chem. Eng. 1974, 52,803-805.

20. Lawson, J.D. ; Garst, A.W. J. Chem. Eng. Data 1976, 21, 20-30.

21 • Isaacs, E.E.; Otto, F.D.; Mather, A.E.J. Chem. Eng. Data 1980, 25, 118-120.

22. Lee, J. I. ; Otto, F .0. ; Mather, A.E.J. Chem. Eng. Data 1973, 18, 71-3,420

23. Bottoms, R.R. Ind. Eng. Chem. 1931 , 23, 501-4.

24. Martin, J.L.; otto, F .0. ; Mather, A.E.J. Chem. Eng. Data 1978, 23, 163-4.

25. Isaacs, E.E. ; otto, F.D.; Mather, A.E.J. Chem. Eng. Data 1977 , 22, 71-3.

26. Isaacs, E.E.; otto, F.D.; Mather, A.E.J. Chem. Eng. Data 1977 , 22, 317-9.

27. Lee, J. I. ; Otto, F.D.; Mather, A.E. J. Chem. Eng. Data 1975, 20, 161-3.

28. Nasir, P.; Mather, A.E. Can. J. Chem. Eng. 1977, 55, 715-7.

29. Lee, J.I.; Otto, F.D.; Mather, A.E. Can. J. Chem. Eng. 1974, 52, 125-7.

30. Isaacs, E.E.; otto, F.D.; Mather, A.E.Can. J. Chem. Eng. 1977, 55, 210-2.

31. Lee, J.I.; Otto, F.D.; Mather, A.E. Can. Gas J. 1972, (May-June), 34-39.


COMPONENTS:1. Hydrogen sulfide; H2S;

[7783-06-4]2. 2-Aminoethanol,{Monoethanol

amine); C2H7NO; [141-43-5]3. Water; H20; [7732-18-5]

ORIGINAL MEASUREMENTS:Riegger, E.; Tartar, H.V.;Lingafelter, E.C.

J. Amer. Chern. Sao. 1944, 66,2024-7.

VARIABLES: PREPARED BY:Temperature, pressure, composition C.L. Young

EXPERIMENTAL VALUES:+ Molality of a*

p !rnrnHg Temperatureamine298.15K 318.15K 333.15K

700 0.6 1.148 1.124 1. 0831.0 1. 086 1.051 1. 0401.5 1. 050 1.011 0.9982.0 1. 033 0.988 0.9683.0 1.011 0.958 0.9344.0 0.998 0.940 0.9095.0 0.991 0.927 0.891

600 0.6 1.126 1. 097 1. 0561.0 1.072 1. 033 1.0111.5 1. 041 0.996 0.9702.0 1. 025 0.975 0.9443.0 1. 004 0.948 0.9104.0 0.991 0.928 0.8845.0 0.984 0.914 0.865

500 0.6 1.101 1. 070 1. 0271.0 1. 058 1.012 0.9841.5 1. 032 0.980 0.9452.0 1.016 0.960 0.9163.0 0.996 0.934 0.8804.0 0.980 0.913 0.8585.0 0.974 0.899 0.837

AUXILIARY INFORMATION

METHOD/APPARATUS/PROCEDURE:

Samples of liquid saturated withhydrogen sulfide. Liquid samplesadded to standard iodine soln., andexcess back titrated with sodiumthiosulfate.

SOURCE AND PURITY OF MATERIALS:

1. Commercial sample.2. Carbide and Carbon Chemicals

Corp. sample distilled,b.p. 170.1OC.

3. No details given.

ESTIMATED ERROR:eT!K = ±0.1;ea = 0.8%.

(estimated by compiler).

REFERENCES:

COHPONENTS

Hydrogen Sulfide in Aqueous Solvents

ORIGINAL l1El\SUREMENTS

85

1. Hydrogen sulfide; H2S;[7783-06-4]

2. 2-Aminoethanol, (Monoethanolamine);C2H7NO: [141-43-5]

3. Hater; H20; [7732-18-5]

Riegger, E.; Tartar, H.V.Lingafelter, E.C.

J. Amer. Chern. Boa. 1944, 66,2024-7.

EXPERIMENTAL VALUES:

+P /mmHg

400

300

200

100

50

25

Holality ofamine

0.61.01.52.03.04.05.0

0.61.01.52.03.04.05.0

0.61.01.52.03.04.05.0

0.61.01.52.03.04.05.0

0.61.01.52.03.04.05.0

0.61.01.52.03.04.05.0

298.15K

1. 0801. 0421. 0201. 0060.9850.9710.963

1. 0531. 0221. 0020.9900.9700.9550.945

1. 0270.9980.9790.9660.9460.9310.918

0.9860.9560.9340.9190.8930.8700.852

0.9340.9020.8760.8560.8190.7840.758

0.8660.8330.8020.7770.7300.6870.643

a*Temperature

318.15K

1.0450.9930.9610.9430.9180.8970.880

1.0110.9670.9390.9210.8910.8690.850

0.9710.9290.9000.8800.8460.8190.800

0.9080.8640.8260.7950.7480.7140.684

0.8260.7820.7420.7060.6480.6010.564

0.7310.6860.6310.6010.5330.4870.453

333.15K

0.9950.9520.9120.8850.8480.8210.801

0.9600.9160.8760.8470.8100.7780.753

0.9080.8630.8220.7930.7510.7140.683

0.8110.7570.7080.6740.6240.5810.547

0.6940.6340.5760.5320.4740.4250.386

0.5510.4900.4330.3880.3310.2910.285

+

*

partial pressure of hydrogen sulfide

Mole of hydrogen sulfide per mole of amine.

86

COMPONENTS:


ORIGINAL MEASUREMENTS:


2. Water; H20; [7732-18-5]3. 2-Aminoethanol,

(monoethanolamine); C2H7NO;[141-43-5]

VARIABLES:

Temperature, pressure, composition

Leibush, A.G.; Shneerson, A.L.

Zhur. Prik. Khim. 1950, 23, 145-152.J. Applied Chem. USSR 1950,23, 149-157.

PREPARED BY:

P.G.T. Fogg


T/K PH2S /mmHg PH2S /bar* Mole ratioConc.of MEA/mol dm- 3 H2S/MEA

0.93 288.2 0.050 0.000067 0.0681.53 0.00204 0.2431 .85 0.00247 0.4548.6 0.0115 0.714

298.2 0.100 0.000133 0.0680.87 0.00116 0.2433.14 0.00419 0.454

17.2 0.0229 0.714323.2 0.378 0.000504 0.068

3.38 0.00451 0.24313.4 0.0179 0.45465.6 0.0875 0.714

2.5 288.2 0.098 0.000131 0.0610.264 0.000352 0.1191.06 0.00141 0.2504.25 0.00567 0.450

11 .0 0.0147 0.61416.4 0.0219 0.68857.5 0.0767 0.846

*calculated by compiler. is 2-aminoethanol (monoethanolamine)MEA



N2 or a mixture of N2 & H2S was

passed successively through two

absorbers containing H2S dissolved

in an aqueous solution of MEA. The

H2S in the emerging gas was passed

into cadmium or zinc acetate

solution and the precipitated

sulfides estimated by iodimetry.

Hydrogen sulfide in the MEA

solutions was also determined by

iodimetry. CO 2 in the MEA

solutions was estimated by reaction

with 30% H2S04 and absorption of

C02 evolved in standard baryta.


1. From H2S0 4 & Na2Si no S02

detected.

3. Contained 3% of impurities

including 0.6 to 1.5 volumes of

C02 per unit volume of solution.

ESTIMATED ERROR:

PH2S

likely to be 5 to 15% too high

because of CO 2 content. (authors)

REFERENCES:

COMPONENTS:



87

1. Hydrogen sulfide; H2S;[ 7783-06-4]

2. water; H20; [7732-18-5]3. 2-Aminoethanol,




Zhur. Prik. Khim. 1950, 23, 145-152.J. Applied Chem. USSR 1950,23, 149-157. ----

T/K PH2S /mmHg PH2S /bar* Mole ratioConc.of MEA/mol dm

_3H2S/MEA

2.5 298.2 0.160 0.000213 0.0610.452 0.000603 0.1100.45 0.00060 0.1191 .14 0.00152 0.1921 .71 0.00228 0.2502.53 0.00337 0.3034.0 0.0053 0.3737.15 0.00953 0.450

20.4 0.0272 0.61431 .4 0.0419 0.688

104 0.139 0.846124 0.165 0.854

323. 0.134 0.000179 0.0220.64 0.00085 0.0611.84 0.00245 o•11 97.25 0.00967 0.250

30.6 0.0408 0.450121 0.161 0.688348 0.464 0.846

*calculated by compiler.

MEA is 2-aminoethanol (monoethanolamine)



[7783-06-4]

2. 2-Aminoethano1 (Monoethano1amine);C2H7NO; [141-43-5]

3. Water; H20; [7732-18-5]


Atwood, K.; Arnold, M. R.;

Kindrick, R. C.

Ind. Eng. Chern. 1957, 49, 1439-44.

VARIABLES: PREPARED BY:

Temperature, pressure, composition C. L. Young

EXPERIMENTAL VALUES: Cone. H2SWt-%T/K t/oF amine P/mmHg P/kPa /mol R,-l Mole ratiot

299.8 80 5 0.000626 8.35 x 10- 5 0.00275 0.003360.0518 0.00691 0.0483 0.0591

73.0 9.7 0.758 0.945310.9 100 0.0414 0.00552 0.0307 0.0376

0.123 0.0164 0.0542 0.0664283 37.7 0.806 1.00

333.1 140 0.00804 0.00107 0.00476 0.00582106 14.1 0.578 0.714

310.9 100 15 0.0137 0.00183 0.0245 0.009952.24 0.299 0.464 0.190

275 36.7 2.116 0.895322.0 120 0.0439 0.00585 0.0384 0.0156

60.8 8.11 1. 458 0.609322.0 120 20 3370 449.3 - 0.999

5850 779.9 - 1.102344.3 160 5720 762.6 - 1.055299.8 80 30 0.000525 0.0000700 0.00600 0.00121

0.00465 0.000620 0.0276 0.005571.50 0.200 0.757 0.155

57.5 7.67 3.26 0.699289 38.5 4.16 0.908

322.0 120 0.0266 0.00355 0.0376 0.007585.92 0.789 0.653 0.133

264 35.2 3.41 0.733

t Moles of hydrogen sulfide per mole of amine.



Gas saturation method was used in

which a known quantity of hydrogen

was passed through a series of

saturators containing a solution of

known hydrogen sulfide concentration.

At partial pressures of H2S greater

than 100 mmHg, solution saturation

method was used. H2S in soln.

determined by iodimetry. Details

in source.


1. Stated purity 99.7 mole percent.

2. Analytical grade.

3. No details.

ESTIMATED ERROR:oT/K = ±0.12; op/kPa = ±2%;

o {Mole ratio) = ±3% (estimated bycompiler) •

REFERENCES:


COMPONENTS:


2. 2-Aminoethanol (monoethano1amine);CzH7NO; [141-43-5]

3. water; H2 0; [7732-18-5]


Jones, J. H.; . Froning, H. R.;

Claytor, E. E. Jr.

J. Chern. Engng. Data

1959, 4, 85-92.


Temperature, pressure C. L. Young


P§/10SpaConc of MEA t P§/10 Spa

Conc of MEA tT/K /Wt-% a T/K /wt-% a

313.15 0.0013 15.3 0.125 353.15 0.0089 15.3 0.1190.0040 0.208 0.0428 0.2510.0121 0.362 0.118 0.4030.0575 0.643 0.304 0.5690.0796 0.729 0.687 0.7110.141 0.814 373.15 0.0028 0.0410.191 0.842 0.0089 0.0660.251 0.884 0.0640 0.1990.348 0.920 0.307 0.3960.545 0.948 0.959 0.6120.800 0.965 393.15 0.0068 0.036

333.15 0.0095 0.202 0.0295 0.0880.0149 0.251 0.173 0.2060.0484 0.419 0.684 0.3940.167 0.636 413.15 0.0065 0.0250.577 0.849 0.0460 0.0770.581 0.842 0.395 0.1971.13 0.952

p§partial pressure of hydrogen sulfide

atmole ratio in liquid, moles of hydrogen su1fide/ moles ofmonoethano1amine


METHOD/APPARATUS/PROCEDURE: SOURCE AND PURITY OF MATERIALS:

1. Purity 99.9 mole per cent. Massspectrometry showed trace amountsof methyl mercaptan, carbondisulfide and carbon dioxide.

2. purity 99.2 mole per cent.

3. Distilled.

Rocking static equilibrium cell

fitted with liquid and gas sampling

ports. Pressure measured with

Bourdon gauge. Concentration of

hydrogen sulfide in gas phase deter

mined by mass spectrometry.

Concentration of hydrogen sulfide inliquid determined by adding to excess ~~__~ ~

of acidified iodine solution and back ESTIMATED ERROR:OT/K = ±0.1 at 313.15 K, ±0.5 at

titrating with standard thiosulfate 413.15 K; oP/kPa = ±1%; oa = ±3%solution. Details in source. (estimated by compiler).

REFERENCES:

H50S-0'



[7783-06-4]

2. 2-Aminoethano1, (Monoethano1amine); C2H7NO: [141-43-5]

3. Water; H20; [7732-18-5]

VARIABLES:


ORIGINAL MEASUREMENTS:Lee, J.I.; Otto, F.D.; Mather, A.E.

Can. J. Chem. Engng. 1974, 52, 803-5.

PREPARED BY:C.L. Young


T/K

313.15

373.15

Conc of MEA-3Imo1 dm

2.5

2.5

PH2S/kPa CL

2252.5 1. 5052049.1 1. 491323.1 1. 231304.5 1. 281257.6 1. 271213.5 1. 261046.6 1.191020.4 1. 22

968.7 1.21959.7 1.19439.9 1. 04428.2 1. 01154.4 0.93

18.4 0.7816.0 0.8115.7 0.781

4247.1 1. 444205.8 1. 554192.0 1.473412.9 1. 412778.5 1. 312140.8 1.181896.0 1.1451379.6 1. 04

730.8 0.965

AUXILIARY INFORNATION


Recirculating vapor flow apparatuswith Jerguson liquid level gaugecell with magnetic pump. Nitrogenadded to vapor to increase pressureto at least 200 kPa. Vapor analysedby gas chromatography. Partialpressure of hydrogen sulfideestimated from knowledge of pressureand vapor pressure of monoethano1amine. Liquid samples passed intosulfuric acid and displaced hydrogensulfide collected in buret.

SOURCE AND PURITY OF NATERIALS:

1. Matheson C.P. grade purity 99.91mole per cent.

2. Fisher Scientific sample, purity99.95 mole per cent.

3. Distilled Nitrogen used as carrier,purity 99.997 mole per cent.

ESTlNATED ERROR:oT/K = ±0.5; oplkPa = ±l%OCL = ±3-5%

REFERENCES:

COMPONENTS:



91

1. Hydrogen sulfide; H2S; [7783-06-4]

2. 2-Aminoethanol, (Monoethanolamine);C2H,NO: [141-43-5)

3. Water; H20; [7732-18-5)

Lee, J.I.; Otto, F.D.;Mather, A.E.

Can. J. Chern. Engng. 1974, 52,

803-5.

EXPERIMENTAL VALUES:T/K Cone of MEA

-3/ mol dm

373.15

313.15

373.15

2.5

5.0

5.0

PH2S/kPa a.

726.0 0.957546.1 0.936410.2 0.884283.4 0.805194.3 0.751148.2 0.694127.5 0.602122.7 0.62103.4 0.56

84.8 0.53

2220.1 1. 322915.6 1. 025723.9 0.974497.8 0.900402.6 0.840146.2 0.865144.8 0.895128.2 0.855115.1 0.767

30.7 0.6774.21 0.4352.55 0.3761. 63 0.278

3176.4 1. 0321983.6 0.895

679.1 0.785430.9 0.700282.7 0.615221. 3 0.580194.4 0.515

51. 9 0.34442.1 0.288

7.24 0.123

a. = Mole ratio in liquid phase, H2S/Monoethanolarnine.


COMPONENTS:

1. Hydrogen sUlfide; H2 S;[7783-06-4]

2. Water; H20; [7732-18-5]3. 2-Aminoethanol, (Monoethanol

amine); C2H7NO; [141-43-5]

VARIABLES:

Temperature, pressure

ORIGINAL MEASUREMENTS:Lawson, J.D.;Garst, A.W.

J. Chern. Engng. Data~ 1976, 21~

20-30.

PREPARED BY:

C.L. Young


T/K P/bar Cone of MEA

/wt%

313.15 0.000016 15.20.0000190.000110.000250.000410.000360.000730.000650.0150.0122.5582.3985.6755.782

24.78

333.15 0.000012 15.20.0000990.000370.000590.000990.00150.0450.047

Liquid compomol H2S/mo1amine

0.01400.01470.03290.03960.05900.05910.07890.07950.3730.3801. 0261. 0491. 0991.1161. 633

0.00520.01410.03390.04060.05930.08050.3840.392

Mole fraction ofhydrogen sulfidein liquid, xH2S

0.0007020.0007370.001650.001980.002950.002960.003940.003970.01840.01870.04900.05000.05230.05300.0757

0.0002610.0007070.001700.002030.002970.004020.01890.0193



Rocking equilibrium cell fittedwith liquid and vapor samplingvalves. Pressure measured withBourdon gauge. Cell charged withamine then hydrogen sulfide andmethane added as an inert gas to"achieve the desired total pressure".Vapor phases analysed by massspectrometry. Liquid samplesanalysed by electrometric titration,details in source. Additionalanalytical methods were usedfor some samples.

SOURCE AND PURITY OF MATERIALS:1. Purity 99.5 mole per cent.2. Distilled.3. Commercial sample purity better

than 99 mole per cent asdetermined by acid titration.

ESTIMATED ERROR:oT/K = ±0.15 at 300K increasing to±O.6 at 413K; oP/bar =±0.5%;oXH2S = ±3%.

REFERENCES:

COMPONENTS:



93


2. Water; H20; [7732-18-5]3. 2-Aminoethano1, (Monoethano1

amine); C2H7NO; [141-43-5]

Lawson, J.D.; Garst, A.W.

J. Chern. Engng. Data. 1976, 21.

20-30.


T/K P/bar Conc of MEA

/wt%

Liquid compmol H2S/mo1amine

Mole fraction ofhydrogen sulfidein liquid, x H2S

333.15

353.15

373.13

393.15

413.15

299.81

310.93

366.48

3.4505.995

32.64

0.0000370.000130.000990.001550.1130.1204.6638.660

32.37

0.0000630.000410.00630.00750.01840.3060.3069.299

10.1038.50

0.0230.0240.0430.6390.6730.9861. 239

38.24

0.0450.053

0.000760.00520.00920.017

0.000010.000830.00750.107

0.000360.00130.1421. 667

15.2

30

0.9971.1141.526

0.00550.01430.03490.04180.3820.3850.9931. 0281. 468

0.00580.01430.06330.07930.1210.3760.3840.9521.0151. 358

0.06530.08120.1220.3830.3860.9230.9391. 36

0.06100.0749

0.0810.2310.3110.406

0.00830.0480.1990.616

0.00890.05090.2070.570

0.04760.05290.0711

0.0002760.0007170.001750.002090.01880.01900.04750.04900.0686

0.000290.000720.003170.003960.006030.01850.01890.04560.04850.0638

0.003270.004060.006080.01890.01900.04430.04500.0639

0.003050.00374

0.009000.02520.03370.0435

0.0009300.005350.02180.0646

0.0009970.005680.02270.0601

94

COMPONENTS:




2. Water; H20; [7732-18-5]3. 2-Aminoethano1 (Monoethano1amine):

C2H,NO; [141-43-5]

VARIABLES:

Pressure


Isaacs, E. E.; otto, F. D.;Mather, A. E.J. Chern. Eng. Data

1980, 25, 118-120.

PREPARED BY:C. L. Young

T/K

373.2

Partial pressure ofhydrogen sulfide

/kPa

0.00900.03100.1400.3541. 671. 50

Mole ratio H2S/C2H,NOin liquid

0.0160.02100.03000.04300.0900.092

concentration of 2-Aminoethanol was 2.5 kmo1 m- 3 (soln.).



No details given.

Nitrogen passed through three 250 ml

vessels in series which contained

amine solution with a certain amount

of dissolved carbon dioxide and

hydrogen sulfide. Emerging gas

from last vessel analysed by GC.

Liquid sample taken from last vessel.

Hydrogen sulfide content determined

by iodine-thiosulfate titration.

ESTIMATED ERROR:

oT/K=±0.5;

(estimated

REFERENCES;

ox=±6%

by compiler)


COMPONENTS:


2. Water; H20; [7732-18-5]3. Ethanol, 2,2'-iminobis-,

(diethanolamine); C4HllN02;[111-42-2]

VARIABLES:Temperature, pressure, composition

of liquid phase

ORIGINAL MEASUREMENTS:Leibush, A.G.; Shneerson, A.L.


PREPA\l.ED BY:

P.G.T. Fogg


Conc.of DEA T/K/mol dm- 3

Mole ratioH2S/DEA

0.97 288.2 0.076 0.000101

0.29 0.00039

1. 27 0.00169

5.73 0.00764

24.0 0.0320

43.0 0.0573

94.5 0.1260

298.2 0.147 0.000196

0.50 0.00067

1 .97 0.00263

7.92 0.01056

38.0 0.0507

70.8 0.0944

145 0.193

*calculated by compiler. DEA = diethanolamine


0.040

0.091

0.194

0.420

0.670

0.734

0.838

0.040

0.091

0.194

0.420

0.670

0.734

0.838


N2 or a mixture of N2 & H2S was

passed successively through two

absorbers containing H2S dissolved

in an aqueous solution of DEA. The

H2S in the emerging gas was passed

into cadmium or zinc acetate

solution and the precipitated

sulfides estimated by iodimetry.

Hydrogen sulfide in the DEA

solutions was also determined by

iodimetry.


1. From H2S04 & Na2S: no S02detected

3. Contained 0.2 to 0.6 volumes ofC02 per unit volume ofsolution; less than 1% byweight of total impurities.

ESTIMATED ERROR:oT/K = ± 0.1 (authors)PH S likely to be 5 to 15% too

2 high because of CO 2content. (authors)

REFERENCES:

96

COMPONENTS:



1. Hydrogen sulfide; H2S;[7783-06-4)

2. Water; H20; [7732-18-5)3. Ethanol, 2,2'-iminobis-,

(diethanolamine); C4HllN02;[111-42-2)




Conc.of DEA T/K/mol dm- 3

0.97 323.2

2.0 288.2

298.2

323.2

0.34

1.59

6.17

32.7

143

197

312

0.319

3.0

6.9

14.6

40.5

99

0.167

0.71

3.3

5.1

12.1

12.5

13.5

23.7

68.5

219

0.048

0.276

0.565

11 .3

15.1

40.8

86.5

0.00045

0.00212

0.00823

0.0436

0.191

0.263

0.416

0.000425

0.0040

0.0092

0.0195

0.0540

0.132

0.000223

0.00095

0.0044

0.0068

0.0161

0.0167

0.0180

0.0316

0.0913

0.292

0.000064

0.000368

0.000753

0.0151

0.0201

0.0544

0.1153

Mole ratioH2S/DEA

0.040

0.091

0.194

0.420

0.670

0.734

0.838

0.073

0.221

0.342

0.465

0.624

0.780

0.035

0.073

0.175

0.221

0.342

0.353

0.368

0.465

0.624

0.780

0.006

0.022

0.035

0.175

0.221

0.342

0.465

*calculated by compiler. DEA = diethanolamine


COMPONENTS:


2. 2,2 L lminobisethano1 (Diethano1amine); C .. HIIN02;[111-42-2]

3. water; H20; [7732-18-5]

VARIABLES:




Atwood, K.; Arnold, M. R.;

Kindrick, R. C.Ind. Eng. Chern. 1957, 49, 1439-44.

PREPARED BY:

C. L. Young

T/K

310.9

333.1

299.8

322.0

310.9

322.0

100

140

80

120

100

140

tvt-%amine

10

25

50

P/rnrnHg

0.346712

0.587178

0.008702.89

3200.131

6820.0566

63.1422

0.13535.7

646

P/kPa

0.046294.9

0.078323.7

0.0011600.385

42.70.0175

90.90.007558.42

56.30.01804.76

86.1

Cone. H2S/mol i-I

0.05200.9390.03370.6750.01230.3162.0240.03272.0020.02811.9153.540.02810.7573.11

Mole ratiot

0.05430.9970.3520.7130.005050.1300.8620.01340.8520.005600.3940.7510.005590.1530.653

t Moles of hydrogen sulfide per mole of amine.





was passed through a series ofsaturators containing a solution of


At partial pressures of H2S greaterthan 100 rnrnHg, solution saturation

method was used. H2S in soln.

determined by iodimetry. Details

in source.




3. No details.

ESTIMATED ERROR:

oT/K = ±0.12; op/kPa = ±2%;

o (Mole ratio) = ±3% (estimated bycompiler).

REFERENCES:

98

COMPONENTS:



1. Hydrogen sulfide; H2 S;[7783-06-4]

2. 2,2~-Iminobisethanol (Diethanolamine); C 4 H11 N0 2 ; [111-42-2]

3. Water; H2 0; [7732-18-5]

Lee, J.I.; Otto, F.D.; Mather, A.E.

J. Chern. Eng. Data, 1973, 18, 71-3,

420.


Temperature, pressure, composition C. L. Young


T/K Conc of 2 /mol -3dm p/kPa a

298.15 2.0 2.45 0.44022.1 0.73127.5 0.76199.8 0.888

222.0 0.944282.0 0.994362.9 1.005459.5 1. 087516.4 1.111651.5 1.140703.3 1.188899.8 1. 256937.7 1. 326

1267.2 1. 3981421.7 1. 4671525.1 1.547

323.15 2.0 5.41 0.33121.9 0.54232.4 0.63534.0 0.64142.6 0.64665.9 0.724

186.1 0.842300.6 0.910



Recirculating vapor flow apparatuswith Jerguson liquid level gaugecell and magnetic pump. Nitrogenadded to vapor to increase pressureto at least 200 kPa. Vapor analysedby gas chromatography. Partialpressure of hydrogen sulfideestimated from knowledge of pressureand vapor pressure of diethanolamine.Liquid samples passed into sulfuricacid and displaced hydrogen sulfidecollected in buret.


1. Matheson, C.P. grade purity 99.91mole per cent.

2. Purity 99.8 mole per cent.

3. (Nitrogen used as carrier, purity99.997 mole per cent.)

ESTIMATED ERROR:

oT/K = ±0.5; oplkI>a = ±l%;oa = ±3-5%.

REFERENCES:


T/K Cone. of 2/mol-3

p/kPadm a

323.15 2.0 614.0 0.978903.2 1.028910.1 1.030

1001.1 1. 0231138.3 1.1801332.7 1.2551373.4 1. 2271655.4 1. 3101728.5 1.2751892.6 1. 347

348.15 2.0 3.25 0.1597.72 0.226

13.4 0.31615.1 0.35437.2 0.44563.0 0.530

128.1 0.639228.9 0.783476.4 0.905710.1 0.938974.2 1. 012

1139.7 1. 0791152.1 1. 0801365.1 1.0621475.5 1.1171778.8 1. 2002000.1 1.274

373.15 2.0 11.0 0.15057.6 0.314

176.5 0.506429.2 0.694889.4 0.873

1434.8 1. 0531896.0 1.1271968.4 1.131

393.15 2.0 25.2 0.16274.5 0.256

342.0 0.521688.8 0.680

1042.5 0.8121516.8 0.9751916.7 1.0621925.7 1.070

298.15 3.5 0.834 0.2013.89 0.3526.76 0.449

16.9 0.61335.8 0.68148.5 0.711

100.0 0.785111.0 0.790266.1 0.875389.7 0.948732.9 1. 020

1037.0 1.1031357.0 1.1201756.1 1.206

323.15 3.5 0.738 0.0645.07 0.200

21.8 0.38766.8 0.616

123.4 0.713219.9 0.776392.3 0.858672.2 0.918935.6 0.975

1385.8 1. 0391985.7 1. 097


T/K Cone of 2./mol drn- 3 p/kPa a

348.15 3.5 2.36 0.07212.8 0.19859.4 0.396

166.8 0.614307.5 0.723589.5 0.831871. 5 0.855

1441.0 0.9452104.9 1. 042

373.15 3.5 5.47 0.06933.9 0.193

139.3 0.391226.1 0.478357.1 0.582512.3 0.675601.2 0.688921.1 0.762

1362.4 0.8302076.0 0.927

393.15 3.5 13.3 0.06978.2 0.187

253.0 0.365361.3 0.440677.7 0.618750.1 0.625

1238.3 0.7252003.6 0.836

a = mole ratio in liquid phase H2 S/niethanolamine



[7783-06-4]2. 2,2'-iminobisethanol,

(Diethanolamine); C4HIINOZ;[111-42-2]

3. Water; H20; [7732-18-5]

VARIABLES:


ORIGINAL MEASUREMENTS:Lee, J.I.; Otto, F.D.; Mather, A.E.

J. Chern. Eng. Data. 1973, 18, 71-3,420.Some data taken from Amer. Chern. Soc.deposited document.

PREPARED BY:

C.L. Young.


T/K Conc.of DEA/mol dm- S

298.15

323.15

0.5

0.5

P/kPa a

0.119 0.20800.390 0.29651. 76 0.4028

15.2 0.650671. 7 0.8642

161.7 1. 015201. 0 1. 034275.4 1.194464.0 1. 493647.8 1. 896658.4 1. 813

1034.2 2.5671272 .1 2.8931561.6 3.293

0.0779 0.09460.883 0.208

19.2 0.54970.2 0.724270.3 0.7471

102.0 0.8296244.1 1. 015315.8 1. 048414.4 1.196589.5 1. 380775.6 1. 581

AUXILIARY INFORHATION

METHOD/APPARATUS/PROCEDURE:Recirculating vapor flow apparatuswith Jerguson liquid level gaugecell and magnetic pump. Nitrogenadded to vapor to increase pressureto at least 200 kPa. Vapor analysedby gas chromatography. Partialpressure of hydrogen sulfideestimated from knowledge of pressureand vapor pressure of diethanolamine.Liquid samples passed into sulfuricacid and displaced hydrogen sulfidecollected in buret.

System contained a trace of carbondioxide.

SOURCE AND PURITY OF MATERIALS:1. Matheson C.P. grade purity

99.91 mole per cent.


3. Distilled nitrogen used ascarrier, purity 99.997 moleper cent.

ESTIMATED ERROR:

oT/K = ±0.5; oP/kPa = ±l%joa = ±3-5%.

REFERENCES:

102

COMPONENTS:


ORIGINAL MEASUREMENTS

1. Hydrogen sulfide; H2S: [7783-06-4]

2. 2, 2 '-iminobisethano1,(Diethano1amine); C4HIIN02;[111-42-2]

3. Water; H20; [7732-18-5]

LeeJ J.I.; Otto, F.D.;Mather, A.E.

J. Chern. Eng. Data. 1973, 18.

71-3,420.

EXPERIMENTAL VALUES: -3T/K Cone of DEA/mo1 dm P/kPa ex

323.15

348.15

373.15

393.15

298.15

323.15

0.5

0.5

0.5

0.5

5.0

5.0

1132.81521. 0

0.8002.464.73

33.388.2

311.6353.7854.2

1081.11622.3

2.669.60

35.674.5

191.5552.3

1125.21603.0

4.9617.136.9

206.3518.5978.4

1425.11585.8

0.4760.8201.102.72

14.618.019.042.776.2

262.0559.2755.7868.7

1104.51671. 9

0.8964.32

14.946.2

131.3273.9343.4930.8

1246.81635.4

2.04922.431

0.09600.16910.24910.50940.6420.9800.97531.37021. 5881. 932

0.1050.2020.3680.4860.68581. 068·1.4551. 682

0.1050.2020.28760.62520.87141.2561.54121. 662

0.11560.16050.20280.31720.54180.58940.58210.71660.7890.8790.9420.9981. 0851.1021.160

0.08520.2050.3290.5060.68450.8200.83220.9010.9921. 043

COMPONENTS


ORIGINAL MEASUREHENTS:

103


2. 2,2'-iminobisethanol,(Diethanolamine); C4HllN02;[111-42-2]

3. Water; H20: [7732-18-5]

Lee, J.I.; Otto, F.D.;Mather, A.E.

J. Chern. Eng. Data. 1973, 18.

71-3,420

EXPERIMENTAL VALUES:T/K Cone. of DEA

/mo1 dm-!

348.15 5.0

373.15 5.0

393.15 5.0

P/kPa ex

0.618 0.02231. 43 0.05118.96 0.1226

17.8 0.18753.6 0.338577.2 0.386

144.8 0.4974274.4 0.661354.0 0.6963620.5 0.7922

1173.5 0.91811359.6 0.9421776.1 0.9729

5.82 0.048448.9 0.1869

124.1 0.3167219.2 0.415384.5 0.5827819.1 0.7412

1542.3 0.8241

14.9 0.048971. 8 0.1408

248.2 0.3284400.2 0.438495.0 0.5111761. 2 0.5559971. 5 0.6126

1338.9 0.66231661. 6 0.7274

ex = Mole ratio in liquid, H2S/Diethanolamine


COMPONENTS:


2. Water; H20; [7732-18-5]3. 2,2'-iminobisethanol,

Diethanolamine; C~HllN02;

[111-42-2]

VARIABLES:



Lawson, J.D. and Garst, A.W.

J. Chem. Engng. Data. 1976, 21,

20-30.

PREPARED BY:

C.L. Young


T/K PH2S/bar Cone. of DEAWt. %

Liquid compomol H2S /molamine.

Mole fractionof hydrogensulfide inliquid, x H2S

310.93 0.0000150.0000090.0000120.0000970.0000710.00110.00170.00440.00870.00950.01600.01800.02050.01840.01530.01450.02890.07860.09190.2131.0131. 0702.944

25 0.00380.00430.00440.01120.01570.05260.07550.1330.1770.1960.1970.2170.2300.2300.2340.2580.3190.4570.4810.6520.8550.8300.975

0.000210.000230.000240.000600.000850.002830.004060.007120.009460.01050.01060.01160.01230.01230.01250.01370.01690.02410.02530.03400.04410.04290.0500

AUXILIARY INFOR}~TION


Rocking equilibrium cell fitted withliquid and vapor sampling valves.Pressure measured with Bourdongauge.

Cell charged with amine thenhydrogen sulfide and methane addedas an inert gas to "achieve thedesired total pressure"

Vapor phases analysed by massspectrometry. Liquid samplesanalysed by electrometric titration,details in source. Additionalanalytical methods were used forsome samples.


1. Purity 99.5 mole per cent.2. Distilled.3. Commercial sample purity better

than 99 mole per cent asdetermined by acid titration.

ESTIMATED ERROR:oT/K = ±0.15 at 310 K increasingto ±0.6 at 422 K;oXH2S = ±lO%increasing to±16% at

low pressuresREFERENCES:


Cm.1PONENTS :


2. Water; H20; [7732-18-5]

3. 2, 2 '-iminobisethanol,Diethanolamine; C4HllN02;[111-42-2]

ORIGINAL ~ASUREMENTS:


J. Chem. Engng. Data. 1976,

21, 20-30.


T/K PH2/bar Cone of DEA Liquid compoWt. % mol H2S/mo1

amine

Mole fractionof hydrogensulfide inliquid, x

H2S

310.93

324.82

338.71

352.59

366.48

2.7582.678

13.98820.78322.78126.645

0.01650.05600.2642.558

17.852

0.000110.000080.000130.000350.000280.001600.002140.02620.02740.03620.06170.06100.08570.07630.05080.07190.04660.1130.2800.2610.4020.4770.6662.5455.2763.997

18.65123.84726.83131.441

0.0750.2041.0474.570

19.580

0.000130.00150.00230.00430.0870.1240.181

25

25

1.0821.0431.1071.3951.4121.582

0.1800.3170.5880.9581.241

0.00450.00690.00920.01000.01510.03010.04880.1240.1430.1790.2050.2070.2520.2550.2560.2570.2640.3180.4460.4620.5150.5910.6440.8940.9420.9911.2301.251.3151.432

0.1800.3140.5820.9181.212

0.00390.01530.02080.03190.1320.1780.201

0.05520.05330.05640.07000.07080.0787

0.009620.01680.03080.04920.0628

0.000240.000370.000500.000540.000810.001620.002630.006650.007660.009570.01090.01110.01340.01360.01370.01370.01410.01690.02350.02430.02710.03090.03360.04600.04840.05080.06230.06320.06630.0718

0.009620.01670.03040.04720.0614

0.000210.000830.001120.001720.007080.009520.0107


COMPONENTS:


2. Water; H20; [7732-18-5]

3. 2, 2 '-iminobisethanol,Diethanolamine; C4HllN021[111-42-2]

ORIGINAL MEASUREMENTS


J. Chern. Engng. Data. 1976,

21~ 20-30.

T/K

366.48

380.37

394.25

408.15

422.04

310.93

333.15

366.48

0.2170.1750.3661.4125.9286.128

23.84735.038

0.2220.5801. 9327.354

25.712

0.00450.00410.3960.4650.4930.9863.3045.0238.4208.260

28.11037.036

0.6134.476

10.112

1.0924.983

10.698

0.000120.00390.0320.253

0.000090.0440.866

0.00450.0410.3862.758

Conc.of DEAHt. %

25

50

54.5

50

Liquid camp.mol H2S/mo1amine.

0.2110.2120.3150.5650.8940.8961.1161. 295

0.1690.3060.5630.8561.134

0.01430.01510.1690.1920.2020.2950.5310.6000.7680.8411. 0951.241

0.1620.4960.766

0.1510.4550.587

0.01110.05220.2120.553

0.00530.1240.587

0.0110.0550.2110.566

Mole fractionof hydrogensulfide inliquid, x

H2S

0.01230.01130.01670.02960.04600.04620.05680.0653

0.009040.01630.02950.04420.0577

0.0007710.0008150.009040.01030.01080.01570.02790.03140.03980.04340.05580.0628

0.008670.02610.0397

0.008090.02400.0307

0.001620.007570.03010.0748

0.0007740.01780.0790

0.001610.007980.02990.0764



[7783-06-4]2. Water; H20; [7732-18-5]

3. Ethanol, 2,2'-iminobis(diethanolamine); C4HllN02;[111-42-2]

VARIABLES:




Lal, D.; otto, F.D.; Mather, A.E.

Can.J.Chem.Eng. 1985, 63, 681-685.

PREPARED BY:

P.G.T. Fogg

313.15 0.0420.0510.0530.0530.0640.1060.1490.1620.1900.2160.2450.2760.3840.5511 .355

Mole ratio inliquid, H2S/DEA

0.0430.0510.0570.0510.0540.0630.0830.0810.0870.0970.1020.1170.1410.1890.219

373.15 0.00750.0110.0120.0160.0250.0440.0610.0920.1370.1950.2380.4050.6530.7520.8951 .2931 .4073.181

Mole ratio inliquid, H2S/DEA

0.00710.00850.00810.00980.00940.01090.01380.01340.01790.02080.01940.03270.0410.0420.0480.0570.0640.102

Concentration of diethanolamine = 2.0 kmol m- 3 (2.0 mol dm- 3)



Apparatus described in ref. (1) was

used. Nitrogen was passed throughthree 500 cm 3 stainless steel

vessels in series. These containedamine solution and dissolved H2S.

Temperatures were controlled to

± 0.5 K by an oil-bath. The gasemerging from the last vessel was

analysed by gas chromatography.

Samples of liquid from this vessel

were analysed for H2S by

iodine-thiosulfate titration.


3. supplied by Dow chemicals.

ESTIMATED ERROR:oT/K = ± 0.5 (authors)oP/P = ± 0.15 at PH S > 0.05 kPa;larger at lower 2partial pressures (authors).

REFERENCES:

1. Isaacs, E.E.; otto, F.D.;Mather, A.E. J.Chem.Eng.Data 1980,25, 118.


COMPONENTS:1. Hydrogen sulfide; HzS;

[7783-06-4]

2. Ethanol, 2- (2-aminoethoxy)(Diglycolamine); C4HllNOz;[929-06-6J

3. Water; HzO; {7732-l8-5J

ORIGINAL MEASUREMENTS:Martin, J.L.; Otto, F.D.; Mather,A.E.

J. Chern. Engng. Data. 1978, 23,163-4.


Temperature, pressure C.L. Young


T/K P§/kPa Cone of DGA at/Wt%

T/K Cone of DGA at/Wt%

0.221

0.9090.8490.8060.7120.6400.6390.5710.5220.4560.3160.2170.2100.1820.1160.1000.0950.0710.057

60.0

60.0

2.52

189016601460

987662620509396273126

65.355.148.217.516.513.4

9.294.87

373.15

323.151730 60.0 1.0911490 1.0681730 1.0521480 1.0431140 1.001

679 0.929414 0.877217 0.778121 0.711121 0.699

86.1 0.65772.9 0.65463.1 0.60846.2 0.57753.1 0.54328.3 0.50818.9 0.45211.5 0.381

8.87 0.3445.36 0.2913.91 0.262

p§ partial pressure of hydrogen sulfide

323.15

at mole ratio in liquid, hydrogen sUlfide/diglycolamine



Recirculating vapor flow apparatuswith Jerguson liquid level gaugecell and magnetic pump. Nitrogenadded to vapor to increase pressureto at least 350 kPa. Vapor analyzedby gas chromatography. Partialpressure of hydrogen sulfide estimated from knowledge of pressure andvapor pressure of diethanolamine.Liquid samples passed into sUlfuricacid and displaced carbon dioxidecollected in buret.



2. Jefferson Chemical Co. sample


ESTIMATED ERROR:oT/K = ±0.5; oP/bar = ±1.0%; oaHzS= ±0.02 or ±4% (whichever isgreater).

REFERENCES:

COMPONENTS:



109


2. Water; H20; [7732-18-5]3. 2,2'-(Methylimino)bisethanol

(methy1diethano1Bmine)iCSH13N02i [105-59-9]

VARIABLES:

Temperature, pressure, composition.


Jou, F-Y.i Mather, A.E.; otto, F.D.

Ind.Eng.Chem.Process Des.Dev.1982, 21, 539 - 544.

PREPARED BY:

P.G.T. Fogg

Concentration of methyldiethanolamine (MDEA) = 1.0 kmol m- 3 (1.0 mol dm- 3 )

T/K PH2s /kPa Mole ratioin liquidH2S/MDEA

298.2 0.00674 0.0293

0.0273 0.0539

0.170 0.137

1.10 0.315

8.37 0.658

38.9 0.911

182.0 1 .183

413.0 1 .424

830.0 1 .850

1380.0 2.364

1960.0 2.935

313.2 0.00230 0.0111

0.00409 0.0144

0.0109 0.0225

0.0910 0.0613

0.513 0.149

T/K

313.2

343.2

1 .99

10.9

43.3

102.0

417 .0

1290.0

1800.0

2730.0

0.00210

0.00336

0.00810

0.0110

0.0232

0.0391

0.08360.269

Mole ratioin liquidH2S/MDEA

0.297

0.604

0.866

0.994

1 .308

1 .917

2.250

2.902

0.00540

0.00661

0.0109

0.0130

0.0183

0.0225

0.03000.0537



An equilibrium cell consisted of aJerguson gage with a 250 cm 3 tubulargas reservoir mounted at the top.Gas was circulated with a magneticpump. Temperatures were measured bythermopiles and controlled to±0.5 °C by an air-bath. Pressureswere measured by a Heise bourdontube gage. The cell was chargedwith MDEA and H2S to the appropriatepressure. Nitrogen was added, wherenecessary, to ensure that the totalpressure was above atmospheric.Gases were circulated for at least8 h. The gas phase was analysed bygas chromatography. H2S in theliquid phase was determined byiodimetry and amine by titrationwith H2S0 4 • Solubilities at partialpressures less than 100 kPa weremeasured by a flow method.


1. of high purity from Linde &Matheson.

3. from Aldrich Chemical Co.;purity > 99%

ESTIMATED ERROR:

oT/K = ±0.5 (authors)

REFERENCES:

110

COMPONENTS:





(methyldiethBnolBmine);CsHlaN02; [105-59-9]

Jou, F-Y.; Mather, A.E.; otto, F.D.



Concentration of methyldiethanolamine (MDEA) = 1.0 kmol m- a (1.0 mol dm- a )

343.2 11.0

14.3146.0

511 .0925.0

1650.02420.0

3690.0

5030.0

373.2 0.0900.236

1.034.22

35.8113.0

414.0


0.354

0.3840.886

1 .1851 .405

1 .751

2.0852.5913.229

0.01790.0283

0.05610.118

0.358

0.593

0.936

T/K

373.2

393.2

994.0

2090.02930.0

4920.0

5890.00.050

0.521. 70

11.5

129.0496.0

1290.02710.0

3730.0

5230.0

Mole ratioin liquidH2 S / MDEA

1 .251

1 .6412.298

2.6653.0000.0098

0.03240.05660.145

0.4950.8711 .2331 .750

2.078

2.627

Concentration of methyldiethanolamine =

313.2 0.00260

0.00871

0.03080.171

0.370

1.20

5.76

8.98

27.3

107.0258.0

0.00725

0.0127

0.02380.0576

0.0871

0.162

0.368

0.443

0.6740.965

1 .063

2.0 kmol

313.2

373.2

m- a (2.0 mol

1010.0

2260.0

0.74516.43

29.0772.53

146.9266.3

483.31020

1550

dm- a )

1 .489

1.906

0.0290.156

0.2030.357

0.474

0.660

0.846

1 .076

1 .256

Concentration of methyldiethanolamine =

298.2 0.00593 0.000960

0.0180 0.01710.114 0.0446

0.195 0.0611

0.464 0.0972

0.603 0.106

36.9 0.780

88.8 0.921

4.28 kmol

298.2

m- a (4.28

296.0

476.0

765.0

1060.0

1370.0

1670.0

1830.0

1960.0

mol dm- a )

1.088

1 .1731.273

1 .373

1 .506

1 .5881 .686

1.699

COMPONENTS:



111



(methyldiethanolamine);CSH13N02; [105-59-9]




Concentration of methyldiethanolamine (MDEA) = 4.28 kmol m- 3(4.28 mol dm- 3 )

T/K

313.2

343.3

0.003140.005020.007140.01020.03870.2711.428.71

28.5107.0500.0949.0

1540.02140.02360.02800.0*

0.001300.002740.004510.007140.009850.353

16.823.7

132.0528.0


0.005080.005800.007340.008050.01650.04460.1030.2680.4990.8491 .0831 .2101 .3691 .5201 .5761 .7230.001290.001770.002580.003110.003670.02530.1880.2330.5490.953

T/K

343.2

373.2

393.2

1420.02530.03460.04120.04990.0*

0.04170.1330.3831 .66

26.1240.0765.0

1690.02300.03630.04720.05680.0

0.34225.1

252.01130.02510.03400.04690.05390.05840.0


1 .1631 .3551 .5211 .6161.7270.004340.007630.01420.03050.1300.4350.7631 .0041 .1041.2721 .4091 .5180.009500.08950.3030.6770.9691 .0841 .2211 .2851 .328

* Liquid H2 S phase present.


COMPONENTS:


2. 2,2' ,2"-Nitri1otrisethano1,(Triethanolamine); C6H1SN03;[i02-71-6]

3. Water; H2 0; [7732-18-5]

VARIABLES:


ORIGINAL MEASUREMENTS:Atwood, K.; Arnold, M. R.;Kindrick, R. C.

Ind. Eng. Chern. 1957, 49, 1439-44.

PREPARED BY:

C. L. Young


T/KWt-%amine P/mmHg P/kPa

~Mole ratio

299.8 80 15 1. 31 0.175 0.0404 0.0395241 32.1 0.539 0.531

322.0 120 0.00424 0.000565 0.000795 0.0007764.19 0.559 0.0396 0.0387

115 15.3 0.264 0.259333.1 140 20 5.66 0.755 0.0446 0.0324

624 83.2 0.562 0.412310.9 100 30 0.568 0.0757 0.0261 0.0124

55.3 7.373 0.315 0.151333.1 140 0.0222 0.00296 0.00224 0.00107

624 83.2 0.714 0.345299.8 80 50 0.655 0.0873 0.0381 0.0106

22.9 3.05 0.265 0.0739242 32.3 1.105 0.313

322.0 120 0.00295 0.000393 0.000976 0.00027157.2 7.63 0.297 0.0829

693 92.4 1.179 0.334

t Mole of hydrogen sulfide per mole of amine.





was passed through a series ofsaturators containing a solution of


At partial pressures of H2S greater

than 100 mmHg, solution saturation

was used. H2 S in soln. determinedby iodimetry. Details in source.




3. No details.

ESTIMATED ERROR:oT/K = ±0.12; op/kPa = ±2%;o (Mole ratio) = ±3% (estimated by

compiler) •

REFERENCES:



[7783-06-4]2. Water; H20; [7732-18-5]3.2,2' ,2"-Nitrilotrisethanol,

(triethanolamine); C6H1SN03;[102-71-6]



Can.J.Chem.Eng. 1985, 63, 122-125.

(Numerical data deposited in theDepository for gnpublished Data,Ottawa, Canada)

VARIABLES:Temperature, pressure, composition

of liquid phase.

PREPARED BY:P.G.T. Fogg


Conc. T/K

of TEA

/mol dm- 3

Total

pressure

/kPa

Mole ratio

in liquid

H2S/TEA

2.0

2.0

298.2

323.2

0.02670.1841 .1 04.81

42.2263720

14801980

0.06830.275

22.6340885

181027003420

403303348438752266723

14852030

483417542352901

183827203431

0.01640.04120.1020.2080.5260.9951 .3501 .7511 .989

0.01330.02840.2580.8361 .1641 .5271 .8281 .993

TEA = triethanolamine

*Depository for Unpublished Data, CISTI, National Research Council ofCanada, Ottawa, Ontario, K1A OS2, Canada.


2. distilled.


1. from Linde & Matheson;purity > 99%

3. from Fisher Scientific;purity 99.4%

(authors)

REFERENCES:

1. Ruska, W.E.A.; Hurt, L.J.;Kobayashi, R. Rev.Sci.lnstrum.1970, 41, 1444.

ESTIMATED ERROR:

OT/K = ± 0.5


The equilibrium cell consisted of aJerguson gauge (Model 19-T-20) witha 250 cm 3 tubular gas reservoirmounted at the top. Gas wascirculated with a magnetic pump (1)Temperatures were measured bythermopiles and controlled to± 0.5 K by a air-bath. Pressureswere measured by a Heise bourdontube gauge. The cell was chargedwith TEA solution and H2S to thedesired pressure. If necessarynitrogen was added to ensure thatthe total pressure was aboveatmospheric. Gases were circulatedfor at least 8 h. The gas phasewas analysed by gas chromatography.H2S in the liquid phase wasdetermined by iodimetry and amineby titration with H2S04.

HS05-E


COMPONENTS: ORIGINAL MEASUREMENTS:

1 • Hydrogen sulfide; H2S;[7783-06-4) Jou, F-Y.; Mather, A.E.; Otto, F.D.

2. Water; H2O; [ 7732-18-5)3. 2,2' ,2"-Nitrilotrisethanol Can.J.Chem.Eng. 1985, 63, 122-125.

(triethanolamine); C6H1SN03;[102-71-6)


Cone. T/K PHzS

Total Mole ratio

of TEA /kPa pressure in liquid

/mol dm- 3 /kPa H2S/TEA

2.0 348.2 0.0238 480 0.004020.821 442 0.02378.54 487 0.0813

197 233 0.4311010 1045 0.9602250 2286 1 .3614110 4162 1.7765500 5562 2.076

2.0 373.2 0.0172 387 0.002050.0585 343 0.003280.590 528 0.01251 .35 425 0.01934.88 490 0.0401

72.7 410 0.176708 800 0.620

3120 3231 1.3344940 5052 1 .6516160 6272 1 .912

2.0 398.2 0.0466 492 0.001740.095 490 0.002200.383 501 0.004641 .45 452 0.0114

11. 4 480 0.036165 391 0.203

1730 1955 0.7603550 3775 1 .1535190 5417 1 .4656270 6505 1.627

3.5 298.2 0.0124 334 0.00700.219 478 0.0256

16.0 287 0.242299 320 0.881729 732 1 .161

1500 1504 1 .4931984 1988 1.670

3.5 323.2 0.00832 349 0.002360.33 358 0.01633.40 314 0.0638

35.2 499 0.224466 478 0.780

1740 1759 1.2292500 2508 1.4043430 3436 1 .641

3.5 348.2 0.0281 344 0.002410.372 473 0.0107

12.5 409 0.074657.8 485 0.172

494.0 528 0.5092000 2042 1 .0223270 3306 1 .2814290 4329 1.5065530 5568 1 .714



1. Hydrogen sulfide; H2 S;[ 7783-06-4] Jou, F-Y.; Mather, A.E.; Otto, F.D.

2. Water; H2 O; [7732-18-5]3. 2,2',2"-Nitrilotrisethanol, Can.J.Chem.Eng. 1985, 63, 122-125.

(triethanolamine); C6H1SN03;[102-71-6]


Cone. T/K PH2S Total Mole ratio

of TEA /kPa pressure in liquid

/mol dm- 3 /kPa H2 S/TEA

3.5 373.2 0.0418 442 0.001541.09 452 0.00975

19.1 489 0.0485329 412 0.274

1730 1811 0.7103020 3122 0.9924690 4797 1 .2245910 6024 1 .382

3.5 398.2 0.0183 453 0.005450.886 511 0.00498

10.3 652 0.0224137 344 0.101

1190 1402 0.4163570 3786 0.8445440 5648 1 .098

5.0 298.2 0.0171 349 0.005140.201 452 0.02022.30 509 0.0739

66.8 473 0.406312.0 314 0.798

1090.0 1100 1 .2851580.0 1579 1 .4401990.0 1997 1 .600

5.0 323.2 0.0315 344 0.003760.995 479 0.02439.97 427 0.0842

361 .0 369 0.5671660.0 1686 1 .1352760.0 2769 1 .4323430.0 3444 1 .587

5.0 348.2 0.0152 290 0.000990.158 492 0.003862.13 321 0.0167

73.9 325 0.133279.0 693 0.296

1340.0 1370 0.7014060.0 4092 1 .2905490.0 5526 1 .566

5.0 373.2 0.0269 403 0.000690.381 487 0.002986.07 476 0.0160

324.0 393 0.1781100.0 1170 0.4214050.0 4126 0.9225450.0 5519 1 .097

5.0 398.2 0.0872 438 0.000741.84 496 0.0045645.7 513 0.0354296.0 469 0.128

2480.0 2657 0.4835450.0 5622 0.782


COMPONENTS:

1. Hydrogen sulfide; H2S;

[7783-06-4]

2. 1,1'-Iminobis-2-Propanol,(Diisopropanolamine); C6H1SN02;[110-97-4]

3. Water; H20; [7732-18-5]


Isaacs, E.E.; Otto, F.D. Mather, A.E.

J. Chem. Engng. Data. 1977, 22, 71-3.


Temperature, pressure, composition C.L. Young.

EXPERIMENTAL VALUES: T/K Cone. of 2 /mol dm- 3 P/kPa 0

313 .15 2.5 2152.5 1.4141199.6 1.215

903.2 1.092450.9 0.962179.9 0.824

97.2 0.75073.7 0.72872.3 0.70647.5 0.67127.5 0.56222.7 0.47315.8 0.409

9.6 0.3496.8 0.2892.0 0.132

373.15 2.5 3207.4 1. 2492209.7 1.100

880.4 0.849462.6 0.651211.6 0.478155.8 0.388

82.7 0.30050.4 0.22131. 6 0.17638.1 0.16712.1 0.098

o = mole ratio in liquid phase H2S/Diisopropanolamine.



Recirculating vapor flow apparatuswith Jerguson liquid level gaugecell and magnetic pump. Nitrogenadded to vapor to increase pressureto at least 600 kPa. Vapor analysed No details given.by gas chromatography. Partialpressure of hydrogen sulfide calcul-ated from pressure and composition.Liquid samples passed into sulfuricacid. Hydrogen sulfide collected inburet.

ESTIMATED ERROR:oT/K = ±0.5; oP/kPa = ±l%; 00 = ±4%or ±0.02 whichever is greater.

REFERENCES:

COMPONENTS:



117


2. Water; H20; [7732-18-5]3. 1,1 '-iminobis-2-propanol,

(diisopropanolamine); C6H1SN02;[110-97-4]

4. Tetrahydrothiophene, 1,1-dioxide,(sulfolane); C~H802S; [126-33-0]

VARIABLES:

Temperature, concentration


Isaacs,.E.E; Otto, F.D.;Mather, A.E.

J. Chem. Eng. Data 1977, 22,317-319.

PREPARED BY:

P.G.T. Fogg

The solvent consisted of 40 wt% of diisopropanolamine (DIPA), 40 wt%of sulfolane and 20 wt% of water. The authors indicated that this is atypical Sulfinol solution as used in the Sulfinol process patented byShell.

T/K

313.2 4.65.2

13.820.325.355.9

277 .6502.3585.3865.6

1081 .91410.32051.22291 .3

Mole ratioin liquidH2S/DIPA

0.1520.1750.2970.3080.4240.5820.9011 .0911 .1731 .4921.5982.0223.3394.429

T/K

373.2 63.776.471.7

165.0262.1419.5658.7

1122.61748.82405.93862.3

Mole ratioin liquidH2S/DIPA

0.0740.0830.1190.1500.2430.3520.5100.7330.9291 .2831 .988



The equilibrium cell consisted of aJerguson gage with a 250 cm 3

tubular gas reservoir mounted atthe top. Gas was circulated with amagnetic pump (1). Temperatureswere measured by thermopiles andcontrolled to ± 0.5 °C by anair-bath. Pressures were measuredby a Heise bourdon tube gage. Thecell was purged with nitrogen andcharged with 50-150 cm 3 of Sulfinolsolution. An appropriate quantityof hydrogen sulfide was then added.Nitrogen was added, when necessary,to ensure that the total pressurewas above 350 kPa. Gases werecirculated for at least 8 h. Thegas phase was analysed by gaschromatography and the liquid phaseby treating samples with H2S0~

(2.5 mol dm-3), recording P-V-Tdata for the gases evolved andanalysing them by gaschromatography.


3. minimum purity 97%

4. minimum purity 99%

ESTIMATED ERROR:

oT/K = ± 0.5omole ratio = ± 0.02 or ± 4%whichever is the larger.(authors)

REFERENCES:

1. Ruska, W.E.A.; Hurt, L.J.;Kobayashi, R.

Rev. Sci. Instrum. 1979, 41,1444.


COMPONENTS:


2. Carbon dioxide; CO 2 ; [124-38-9]3. Water; H20; [7732-18-5]4. 2-Aminoethanol;


VARIABLES:

Temperature, pressure, compositionof liquid phase






Concentration of monoethanolamine (MEA) = 2.5 mol dm- 3; T/K = 298.2

Mole ratios in liquid phaseH2S/MEA CO 2 /MEA

1 .94 0.00 0.265 0.025

2.78 0.00 0.265 0.092

4.1 0.00 0.270 0.155

7.15 0.26 0.268 0.255

20.2 1.77 0.262 0.311

70.4 75 0.262 0.385

0.69 0.00 0.145 0.029

2.08 0.00 0.145 0.216

3.62 0.26 0.145 0.300

19.8 4.57 0.145 0.416

760 mmHg = 1 atm = 1.01325 bar



N2 or a mixture of N2 & H2 S waspassed successively through twoabsorbers containing H2S & C02dissolved in an aqueous solution ofMEA. The H2S in the emerging gaswas passed into cadmium or zincacetate solution and theprecipitated sulfides estimated byiodimetry. Hydrogen sulfide in theMEA solutions was also determined byiodimetry. CO 2 in the gas phase wasabsorbed in standard baryta solutionafter removal of H2S by acidifiedpotassium permanganate solution.CO 2 in the liquid phase wasestimated by reaction with 30%H2S0 4 , removal of evolved H2S bypermanganate and absorption ofevolved C02 in standard barytasolution.


1. From H2S0 4 & Na2S: no S02detected

4. Contained 0.6 to 1.5 volumes ofC02 per unit volume ofsolution; less than 1% byweight of total impurities.

ESTIMATED ERROR:

6T/K = ± 0.1 (authors)

REFERENCES:


COMPONENTS:


2. Carbon dioxide; CO 2 ; [124-38-9]3. Water; H20; [7732-18-5]4. 2-Aminoethanol, (monoethanol

amine); C2H7NO; [141-43-5]

VARIABLES:

Temperature, pressure, compositionof liquid phase.



Muhlbauer, H.G.; Monaghan, P.R.

Oil & Gas J. 1957, 55(17), 139-145.


T/K Cone. of MEA PH 2 S PC02

Mole ratio in liquid

/mol dm- 3 /mmHg /mmHg H2S/MEA C02/MEA

298.15 2.52 0.09 0.16 0.112 0.1002.60 0.48 0.52 0.022 0.3332.56 0.82 0.24 0.038 0.3092.50 0.99 0 0.196 02.53 1.18 0.10 o.114 0.1742.49 1 .26 0 0.272 02.62 1 .27 0.40 0.043 0.3472.55 1.81 0.36 0.074 0.3042.63 1 .88 0.70 0.066 0.3482.53 1 .94 0.21 0.146 0.1742.51 2.23 0 0.308 02.53 2.49 0.16 0.226 0.1002.50 3.37 0 0.323 02.59 3.38 13.0 0.019 0.4872.54 4.15 0.47 0.120 0.3022.53 4.23 0.23 0.220 0.175

MEA = monoethanolamine 760 mmHg = 1 atm = 1.01325 bar

AUXILIARY INFORNATION

SOURCE AND PURITY OF NATERIALS:METHOD/APPARATUS/PROCEDURE:

Data for 25°C were obtained by

passing a mixture of N2' C02 & H2S

through two thermostatted

wash-bottles in series containing

monoethanolamine plus dissolved C02

& H2S. After 4 h liquid samples

were analysed by chemical methods

and gas samples by chromatography.

Data for 100°C were obtained by

agitating gas and liquid samples in

a thermostatted steel bomb for about

1 h before analysis of the two

phases.

ESTINATED ERROR:oT/K = ± 0.02

REFERENCES:

(authors)

120

COMPONENTS:




2. Carbon dioxide; CO 2 ; [124-38-9]3. Water; H20; [7732-18-5)4. 2-Aminoethanol, (monoethanol

amine); C2H7NO; [141-43-5]



Oil & Gas J. 1957, 55(17), 139-145.

T/K Cone. of MEA

!mol dm- 3


H2S!MEA C02!MEA

298.15 2.522.622.602.532.472.532.632.592.552.512.622.442.592.522.512.582.532.542.462.522.632.582.512.502.452.532.562.622.522.532.522.612.422.492.532.492.422.522.612.562.422.522.532.492.492.472.41

4.404.806.07.417.677.88.39.28

10.911 .413.916.517.317.427.028.029.230.431 .036.038.747.652.252.853.255.659.565.268.692.793.8

109.4111140142163165.2166.2172230306330340342443711720

0.151 .060.600.31o0.341 .70

19.50.780.272.6o

24.40.290.46

33.52.277.50o1 .06

49.247.5

1 .130.82o

13.834.166.8

8.6132.411 .4

104o2.76

19.99.31o

55.4157

83.8o

62.494.219.616.020.4o

0.2800.0900.1550.3720.4500.2840.1120.0360.1850.4490.1340.5970.0570.3840.5430.0750.2560.1710.7060.4510.0920.0980.4880.6140.7860.2140.1420.1170.2890.2340.3360.1380.8660.6840.3640.5560.9130.2660.1700.3000.9340.4030.3830.6140.7420.8200.939

0.1040.3560.2860.108o0.1720.3520.4720.2960.1050.346o0.4450.1650.0980.4470.2900.357o0.1800.4640.4300.1720.112o0.3580.4100.4710.3070.3640.2920.460o0.1120.2860.181o0.3570.4560.350o0.2800.3170.1670.1040.108o

COMPONENTS:



121


2. Carbon dioxide; CO 2 ; [124-38-9]3. Water; H20; [7732-18-5]4. 2-Aminoethanol, (monoethanol

amine); C2H7NO; [141-43-5]



Oil & Gas J. 1957, 55(17), 139-145.

T/K Cone. of MEA

/mol dm- 3


H2S/MEA CO 2/MEA

373.15

HSD&-E'

2.452.442.442.472.432.452.452.442.452.442.442.452.442.392.432.402.442.432.422.442.442.432.442.392.402.442.432.422.442.432.392.392.422.432.432.432.402.392.422.422.422.422.422.422.402.422.392.402.422.412.412.372.392.402.402.402.382.392.40

9.222.624.834.450.752.560.975.376.385.38790

111118123.8129136139151170195204219224228239241260263269316319324360373397403410420447466470518525540545564632638644700742760804833899947952964

o9.1o

46214.222.826.190.7

50030.310.3o

28918.1o

49.2104.5

37.714 .5

566o

690125

24.574.9

388451924

o42828.684.5

1290179565568

42.4109.0

oo

237643

o740

52.6829155

57.1312

o385

63169

o168

o77 .0o

551

0.0600.0750.1020.0230.1270.1080.1130.0930.0430.1460.1880.2480.0790.2240.2940.1770.1410.1960.2620.0810.3720.0900.1870.2990.2360.1390.1260.0990.4200.1440.3810.2860.1060.2520.1690.1770.4120.3260.4910.5110.2750.1910.5460.1980.4530.1930.3750.4890.3060.5780.3080.5320.4220.6390.4440.6490.5490.6600.342

o0.076o0.4240.0720.1550.1560.2510.4130.1580.076o0.3440.084o0.1670.2440.1530.0740.385o0.3980.2300.0750.1680.3250.3510.408o0.3310.0730.1710.4220.2290.3280.3210.0810.172oo0.2340.324o0.3330.0820.3390.1690.0830.239o0.2460.0730.156o0.146o0.076o0.241


COMPONENTS:1. Carbon dioxide; CO 2 ; [124-38-9]


3. 2-Aminoethano1 (Monoethano1amine);C2H,N02; [141-43-5]

4. water; H20; [7732-18-5]

VARIABLES:



Jones, J. H.; Froning, H. R.;

Claytor, E. E. Jr.


1959, 4, 85-92.

PREPARED BY:

C. L. Young


§ 5T/K P

H2s/10 Pa

313.15 0.00150.00280.00290.00690.00720.00760.00770.01010.01160.01170.02030.02240.02610.05730.07440.10190.1440.156

0.00190.00410.00250.01790.01770.00330.00720.00190.5790.05760.03490.01000.6070.02370.00400.01040.0247'0.0608

Cone. of MEA/wt%

15.3

(cant. )

t tct H2 S ct CO2

0.0164 0.3870.0214 0.4240.0282 0.4000.0248 0.4800.0272 0.4720.0612 0.3920.0436 0.4360.101 0.3490.0056 0.6520.0199 0.5270.0488 0.4880.106 0.4120.0123 0.6580.149 0.4240.361 0.2000.351 0.2930.314 0.3350.235 0.415

partial pressure of hydrogen sulfide

partial pressure of carbon dioxide



Rocking static equilibrium cell

fitted with liquid and gas sampling

ports. Pressure measured with

Bourdon gauge. Concentration of

carbon dioxide and hydrogen sulfide

in gas phase determined by mass

spectrometry. Concentration of

hydrogen sulfide in liquid deter

mined by iodimetry and concentration

of carbon dioxide in liquid deter

mined by precipitation as barium

carbonate or by stripping out carbon

dioxide and reabsorbing on a solid

absorbent. Details in source.


1. Bone dry sample.

2. Purity 99.9 mole per cent. Massspectrometry showed trace amountsof methyl mercaptan, carbon disulfide and carbon dioxide.


4. Distilled.

ESTIMATED ERROR:

oT/K = ±0.1 at 313.15 K, ±0.5 at413.15 K; oP/kPa = ±1%; oct = ±3%(estimated by compiler).

REFERENCES:



1. Carbon dioxide; CO2; [124-38-9] Jones, J. H. ; Froning, H. R. ;

2. Hydrogen sulfide; H2S; Claytor, E. E. Jr.[7783-06-4] J. Chern. Engng. Data

3. 2-Aminoethano1 (Monoethano1amine) ; 1959, 4, 85-92.C2H7N02 ; [141-43-5]

4. Water; H2O; [7732-18-5]


T/K P§H2s/105pa p§ co/10Spa Cone. of MEA t t/wt%

ex H2S ex CO 2

313.15 0.171 0.696 15.3 0.0712 0.6200.175 0.709 0.0716 0.6200.449 0.197 0.327 0.4141.123 0.470 0.425 0.4061. 879 0.771 0.495 0.398

333.15 0.0013 0.0143 0.0074 0.4060.0069 0.0037 0.0597 0.2900.0079 0.0011 0.107 0.1660.0136 0.580 0.0070 0.5940.0192 0.173 0.0200 0.5290.0292 0.0559 0.0569 0.4520.0309 0.0189 0.0878 0.3810.0953 0.0128 0.255 0.2740.1069 1.004 0.0396 0.6060.528 0.499 0.238 0.4601. 995 4.672 0.235 0.570

373.15 0.0037 0.0765 0.0053 0.2930.0069 0.429 0.0050 0.4200.0093 0.0173 0.0272 0.1710.0205 0.375 0.0140 0.4120.0341 0.0791 0.0460 0.272 .0.0500 0.760 0.0245 0.4560.0765 0.0403 0.112 0.1800.199 0.1033 0.178 0.2380.373 0.853 0.140 0.4050.623 0.131 0.366 0.175

393.15 0.0088 0.437 0.0059 0.3220.0135 0.010 0.0405 0.03930.0197 0.0385 0.0344 0.1060.0204 0.0884 0.0264 0.1780.0524 0.381 0.0361 0.2980.0972 0.188 0.104 0.2020.1033 0.205 0.104 0.2000.144 0.421 0.0940 0.280

t = mole H2S/mo1e 2-Aminoethanolex H2 S

t = mole CO 2/mole 2-Aminoethano1ex CO2

MEA = 2-Aminoethanol (monoethano1amine)


COMPONENTS:

1. Carbon dioxide; CO 2 ; [124-38-9]


3. 2-Aminoethano1 (Monoethano1amine);C2H7N02; [141-43-5]

4. Water; H20; [7732-18-5]


Jones, J. H.; Froning, H. R.;

Claytor, E. E. Jr.


1959, 4, 85-92.

EXPERIMENTAL VALUES: Smoothed data for 15.3 wt% of MEA

Moles H2S per Mole MEA

R *L= 0.01 RL = 0.05 RL = 0.10 RL = 0.50

13

1030

100300

1000

13

1030

100300

1000

0.00470.00550.00660.00770.0092

0.00370.00460.00590.00740.0092

0.01900.02250.02630.03010.03510.03990.0464

0.01450.01840.02340.02880.03550.0431

T/K =0.03270.03950.04680.05400.06190.07100.0830

T/K =

0.02370.03040.03960.04920.06050.07300.0910

313.15

0.08630.11600.15100.18200.21200.23500.2700

333.15

0.06500.08450.11250.14500.18400.21900.2620

0.11400.16300.22200.27200.32600.37200.4250

0.07750.11300.16000.21200.27500.32300.3840

0.1280.2120.3740.5790.8020.9311. 00

0.0850.1370.2400.3860.6000.7900.970

0.0290.0500.0910.1600.2790.4390.680

0.0120.0250.0560.1010.1820.3120.520

0.00880.01840.03930.07500.14000.23250.4050

0.02470.04070.06750.10400.16500.24300.3340

373.15

0.02200.03400.05400.08100.12500.18000.2480

= 413.15

0.00720.01460.03120.05900.10750.18000.3120

T/K0.00400.00780.01630.03080.05580.0935

T/K =

0.01030.01550.02390.03490.05240.0762

0.00310.00590.01200.02280.0424

0.00670.01010.01550.02280.03430.0503

0.00160.00300.00590.0110

0.00240.00360.00560.0082

13

1030

100300

1000

13

1030

100300

1000

§PH2 S partial pressure of hydrogen sulfide


COMPONENTS:1. Carbon dioxide1 ~021 [124-38-9]

2. Hydrogen sulfide: H2S:[7783-06-4]

3. 2-Aminoethano1 (Monoethano1amine):C2H,N02: [141-43-5]

4. Water1 H201 [7732-18-5]

ORIGINAL MEASUREMENTS:Jones, J. H.'1 Froning, H. R.1

Claytor, E. E. Jr.


1959, 4, 85-92.

EXPERIMENTAL VALUES: Smoothed data for 15.3 wt% of MEA

Moles H2S per Mole MEA

~* = 0.01 RV = 0.05 ~= 0.10 ~= 0.50 ~= 1.0 ~= 10 ~= 00

13

1030

100300

1000

13

1030

100300

1000

13

1030

100300

1000

13

1030

100300

1000

0.00130.00220.00390.00640.01070.0167

0.00190.00290.00440.00660.0102

0.00170.00300.00560.00980.0176

0.00130.00260.00560.0110

0.00350.00570.01000.01660.02790.04300.0625

0.00490.00740.01150.01750.02720.0410

0.00340.00610.01140.02000.03600.0585

0.00240.00500.01070.02100.0429

T/K0.00500.00840.01490.02500.04150.06380.0920

T/K0.00700.01080.01720.02600.04050.06100.0940

T/K0.00460.00820.01550.02700.04830.0780

T/K0.00310.00650.01400.02780.05730.1010

= 313.15

0.01200.02080.03800.06300.10500.15500.2170= 333.15

0.01720.02600.04140.06210.09800.14800.2170

= 373.15

0.00950.01630.03010.05250.09450.15100.2250

= 413.15

0.00580.01220.02650.05350.11100.18500.3000

0.01780.03000.05400.09100.15100.22000.3050

0.02390.03630.05650.08500.13600.20400.2900

0.01180.02070.03810.06650.12000.19100.2880

0.00780.01600.03520.07050.13800.22500.3630

0.05000.08250.14500.24000.39000.55000.7300

0.06430.09400.14200.20800.31400.43200.5500

0.02240.03900.07200.12600.22500.37000.5820

0.01150.02450.05200.09800.18000.30200.5000

0.1280.2120.3740.5790.8020.9311. 00

0.0850.1370.2400.3860.6000.7900.970

0.0290.050 .0.0910.1600.2700.4390.680

0.0120.0250.0560.1010.1820.3120.520

§PH2 S partial pressure of hydrogen sulfide

§p partial pressure of carbon dioxideC02

~* PH2S/PC02


COMPONENTS:

1. Carbon dioxide; COz; [124-38-9]2. Hydrogen sulfide; HzS;[7783-06-4]3. 2-Aminoethano1,

(Monoethano1amine);CzH7NO;[141-43-5]

4. Water; HzO; [7732-18-5]

VARIABLES:

Temperature,pressure,composition



J. Chern. Eng. Data. 1975, 20.161-163.

PREPARED BY:

C.L. Young

EXPERIMENTAL VALUES: Solubility of HbS-COzMixtures in 5.0 mol dm-3

Monoet anolamine aT/K PHzs/kPa Peo/kPa HzS/MEA COz/MEA

313.15 622.8 3.1 0.962 0.014588.4 3.0 0.923 0.014757.0 20.5 0.887 0.0459883.9 46.2 0.801 0.0868961. 8 92.4 0.758 0.134

1064.5 137.9 0.729 0.1641150.7 179.3 0.716 0.1941254.8 246.1 0.680 0.2361423.7 470.2 0.631 0.3021611. 3 710.1 0.584 0.3661634.0 1213.5 0.505 0.4301730.6 1729.9 0.438 0.5221489.3 3564.6 0.276 0.7491372.0 4226.4 0.215 0.799

384.0 952.2 0.150 0.640418.5 1200.4 0.139 0.670457.1 1402.4 0.128 0.688589.5 1890.5 0.110 0.715456.4 5332.4 0.052 0.894180.6 189.6 0.259 0.431379.9 193.7 0.243 0.492451.6 337.2 0.220 0.535324.0 297.9 0.157 0.602157.2 568.1 0.077 0.680168.2 857.7 0.068 0.698



Recirculating vapor flow apparatuswith Jerguson liquid level gauge andmagnetic pump,nitrogen added to vaporto increase pressure to at least 200kPa. Vapor analysed by gas chromatography. Partial pressure of carbondioxide and hydrogen SUlfide calculated from pressure and vapor pressureof monoethano1amine. Liquid samplespassed into sulfuric acid. Carbondioxide and hydrogen sulfide collected in buret and then analysed by gaschromatography.

SOURCE AND PURITY OF MATERIALS:1. Purity 99.7 mole per cent.



4. Distilled.

Nitrogen used as carrier, purity99.99 mole per cent.

ESTIMATED ERROR:oT/K = ±0.5; oP/kPa = ±l%;

oa = ±3-5%.

REFERENCES:


COHPONENTS: ORIGINAL MEASUREMENTS:

1. Carbon Dioxide; C02; [124-38-9] Lee, J.I.; Otto, F.D.; Mather, A.E.2. Hydrogen sulfide; H2S; [7783-06-4]3. 2-Arninoethanol, J. Chern. Eng. Data. 1975,20,161-163

(Monoethano1amine);C2 H7 NO ;[141-43-5]

4. Water; H20; [7732-18-5]

EXPERIMENTAL VALUES: Solubility of H2S-C02 Mixtures in 5.0 mol dm- 3

Monoethanolamine

T/K

313 .15 184.1243.4290.3261. 3216.5

9.921.925.2

153.1233.7278.5146.2157.9104.1

69.675.865.169.6

167.026.024.846.469.3

144.8152.4280.6516.4229.6433.7307.5313.7418.5617.1917.0

2104.32525.52054.62633.81390.72755.82922.7

70.3255.8314.4383.3

5.84.98.4

15.926.848.358.745.13.3

10.01.11.42.90.06.1

1206.62582.83473.64239.65359.3

437.1638.4890.127.265.897.939.343.826.219.117.614.212.315.2

3.10.350.620.741.21.37.0

56.26.3

27.99.2

29.368.3

215.8937.0994.2

1399.63397.03176.4

64.189.6

1219.01.9

27.456.9

126.20.90.650.762.05.0

15.521.921.2

2.611.2

0.130.330.60.061.5

0.0570.0430.0370.0290.0240.00440.00360.00270.3480.3560.3410.3040.2900.2630.2720.2490.3250.2590.3540.3660.5560.6310.6930.7640.7100.7160.6530.6640.6870.7330.5990.5220.4730.3480.5950.4390.3400.4160.9001. 0150.9000.5950.5370.5070.3980.3120.2160.2030.2150.2130.2090.2140.2200.0730.0490.1210.1160.1220.0000.097

C02!MEA

0.7400.8170.8570.9020.9410.6740.7460.7460.2940.3170.3320.3260.3340.3270.3390.3360.2450.3190.2830.1960.0530.0430.0370.0340.0400.0880.1670.1010.1380.0670.1410.2450.3220.5170.3980.5280.6800.6010.0900.0800.2500.1110.1810.2830.3380.1990.2560.3020.3250.3430.3760.4100.3650.4190.4780.2390.2810.3220.2180.388


COMPONENTS:

1. Carbon dioxide; C02; [124-38-9]2. Hydrogen sulfide; H2S; [7783-06-4]3. 2-Aminoethano1,

(Monoethano1aminel;C2 H7NO;[141-43-5]

4. Water; H20; [7732-18-5]


Lee, J.I.; Otto, F.D.; Mather,A.E.

J. Chern. Eng. Data. 1975,20,

161-163.

EXPERIMENTAL VALUES: -3Solubility of H2S-C02 Mixtures in 5.0 mol dm

Honoethano1amine.ex

T/K PH2S

/kPa PCo/kPa H2 S/ MEA C02!MEA

373.15 31.1 89.3 0.048 0.40831.6 123.3 0.039 0.42722.1 103.2 0.030 0.422

192.4 345.4 0.147 0.417251. 7 421. 3 0.152 0.433238.6 812.9 0.125 0.474211. 0 1392.0 0.086 0.532241. 3 2444.2 0.067 0.588241. 3 5564.0 0.040 0.686271. 0 32.5 0.375 0.194479.9 416.4 0.294 0.371618.4 1605.1 0.183 0.494613.6 3230.2 0.127 0.599553.6 5137.9 0.124 0.611527.4 68.9 0.472 0.173

1114.9 1246.6 0.358 0.4121030.8 4433.3 0.158 0.5871438.2 75.5 0.734 0.0791477.5 332.3 0.623 0.1871565.1 1320.3 0.402 0.3331406.5 5360.6 0.227 0.5172277.3 187.5 0.753 0.0912118.0 1058.3 0.571 0.2522096.0 1954.6 0.483 0.3522020.1 3802.4 0.350 0.4603301.9 62.1 0.884 0.0293501.1 639.1 0.808 0.1333416.3 1978.8 0.544 0.330

55.4 0.6 0.297 0.02848.7 1.1 0.289 0.03549.0 1.3 0.276 0.04466.3 4.4 0.274 0.118

107.6 19.3 0.276 0.2188.0 7.7 0.064 0.242

12.1 10.6 0.059 0.28740.3 70.9 0.063 0.398

141. 7 262.7 0.115 0.439trace 0.04 0.006 0.027

20.3 5.0 0.127 0.180

ex = Mole ratio in liquid phase.


COMPONENTS:

1. Carbon dioxide; C02; [124-38-9]2. Hydrogen sulfide; H2S;

[7783-06-4]3. Water; H20; [7732-18-5]4. 2-Aminoethanol, (Monoethanolamine)

C2H,NO; [141-43-5]

VARIABLES:



Lawson, J.D.; "Garst, A.W.

J. Chern. Engng. Data, 1976, 21, 20

30.

PREPARED BY:

C.L. Young

EXPERIMENTAL VALUES: tT/K P H2s/ bar t

P co/bar Cone. ofMEA

/wt%

Liquid compomol/mol amine

H2S CO 2

298.15

313.15

333.15

373.15

393.15

0.0068 - 15.2 0.155 0.4130.193 0.031 0.303 0.3980.125 - 0.431 0.3211. 592 0.469 0.533 0.505

0.000055 - 0.0059 0.1740.00015 - 0.0135 0.1910.053 - 0.367 0.2331. 985 - 0.493 0.394

0.00023 - 0.0057 0.1760.0032 - 0.0064 0.3860.00071 - 0.0130 0.1911.212 1. 985 0.244 0.595

0.011 0.289 0.0054 0.3890.00081 - 0.0057 0.1670.00028 0.020 0.0073 0.1860.00017 - 0.0131 0.1940.023 0.040 0.0411 0.2330.033 - 0.0757 0.082

0.037 0.016 0.0545 0.06750.334 0.340 0.133 0.166



ESTIMATED ERROR:oT/K = ±0.15 at 293K increasingto ±0.5 at 393K; oP/bar = ±0.5%(liquid camp) = ±3%.

Rocking equilibrium cell fitted with 1.liquid and vapor sampling valves. 2.Pressure measured with Bourdon gauge. 3.Cell charged with amine then gases 4.and methane added as an inert gas to"achieve the desired total pressure".Vapor phases analysed by massspectrometry. Liquid samplesanalysed by electrometric titration,details in source. Additionalanalytical methods were used for somesamples.

Purity 99.99 mole per cent.Purity 99.5 mole per cent.Distilled.Commercial sample purity betterthan 99 mole per cent as determined by acid titration.

REFERENCES:


COMPONENTS:

1. Carbon dioxide; C02; [124-38-9]2. Hydrogen sulfide; H2S; [7783-06-4]3. Water; H20; [7732-18-5]4. 2-Aminoethanol, (Monoethanolamine);

C2H7NO; [141-43-5]




J. Chern. Engng. Data, 1976,21, 20-30.

T/K + + Cone. of Liquid compoP H2s/bar P co/barMEA mol/mol amine/wt% H2S CO 2

310.93 0.00005 - 30 0.0128 0.1190.086 - 0.197 0.3310.826 0.233 0.277 0.405

338.71 0.00017 - 0.0128 0.1130.213 - 0.205 0.3241.732 0.826 0.291 0.403

366.48 0.0043 - 0.0130 0.1160.626 - 0.196 0.3042.891 2.291 0.280 0.392

t partial pressure

COMPONENTS:



131


2. Carbon dioxide; C02; [124-38-9]3. Water; H20; [7732-18-5]4. 2-Aminoethanol (monoethanolamine)

C2H7NO ; [141-43-5]

VARIABLES:

Lee, J.I.; otto, F.D.; Mather,A.E.

Can. J. Chem. Eng. 1976, 54, 214-219.(Original data deposited in theNational Depository of UnpublishedData, Ottawa, Canada)*

PREPARED BY:

Temperature, pressure, composition P.G.T. Fogg


Concentration of monoethanolamine (MEA) = 2.5 kmol m- 3 (2.5 mol dm- 3)

T/K PH2S /kPa Pco/kPa Mole ratio in the liquidH2S/MEA CO 2/MEA

313.2 234 117 0.347 0.453740 234 0.689 0.339

1372 4385 0.253 1.030276 126.9 0.392 0.428

1241 2013 0.429 0.731760 4985 0.128 1.080

14.1 176.5 0.018 0.7311193 373.3 0.795 0.3151207 1882 0.502 0.673

712 5102 0.150 1.090636 5205 0.123 1.117256 2096 0.062 0.978122 241 .3 0.140 0.655327 135.8 0.498 0.37497.9 92.87 0.233 0.50737.7 29.85 0.170 0.494

4.18 4.25 0.061 0.47346.5 27.30 0.216 0.440

131 .7 18.27 0.539 0.216215.1 30.27 0.615 0.197

4.30 0.067 0.436 0.05312.76 0.096 0.570 0.04659.85 0.539 0.687 0.036

11 0.3 0.082 0.815 0.00497.0 141 .0 0.191 0.55280.7 137.9 0.181 0.562

191 .7 115.8 0.349 0.420242.7 98.6 0.468 0.355

1 .81 0.070 0.380 0.0450.335 0.000 0.181 0.0218.20 0.000 0.550 0.0437.39 0.000 0.'552 0.049

45.9 0.296 0.715 0.039

* National Depository of Unpublished Data, National Science Library,National Research Council, Ottawa, K1A OS2, Canada.


METHOD/APPARATUS/PROCEDURE

A windowed equilibrium cell wascharged with the solution undertest. CO 2 and H2S were added togive appropriate pressures asmeasured by a bourdon gage. Thevapor phase was circulated throughthe liquid by a magnetic pump.When equilibrium was reachedsamples of the liquid and gasphases were withdrawn and analysedas indicated in refs. (1) - (3).

SOURCE AND PURITY OF MATERIALS

3. distilled.4. commercial sample; purity 99.95%

ESTIMATED ERROR:oT/K = ± 0.5o(C02/MEA) ; O(H 2S/MEA) = ± 0.02 or

± 4%, whichever is the larger (authors)

REFERENCES:1. Lee, J.I.; otto, F.D.; Mather, A.E.

J. Chem. Eng. Data 1972, 17, 465.2. id. ib. 1973, 18, 7-1-.-3. id. Can.~Chem. Eng. 1974, 52, 125

132

COMPONENTS:




2. Carbon dioxide; C02; [124-38-9]3. Water; H20; [7732-18-5]4. 2-Aminoethanol (monoethanolamine)

C2H7NO; [141-43-5]


Lee, J.I.; otto, F.D.; Mather,A.E.



T/K Mole ratio in the liquidH2S/MEA C02/MEA

313.2 66.956.625.5

276.157.554.61 4. 17.655.254.11

57.20.3331 .063.476.453.791.900.0000.0000.0000.0000.000

904.6213.029.03

4.162.840.2610.060

16.310.012.315.24

4.413.252.075.213.450.5370.723

202420352565255124131620

779.1758.4451 .6444.7173.7172.4589.5568.8452.3404.0377.1643.3717.0761 .9

0.2150.0960.000

145.121 .9

7.451.130.5480.6791 .1 2

12.70.0000.1801.816.62

17.08.81

16.19.385.140.4130.3797.6530.9160.0000.0000.0000.0000.0000.4130.2740.7922.580.5280.9791 .830.6230.5480.2100.1371 .241 .241.240.7850.0000.0000.0000.0000.0000.0000.0000.000

621 .911935219

191 .0189.6912.2

48304702

0.7800.7800.7110.4860.3130.4430.3580.3170.2730.1610.3660.1470.1440.1350.0910.0380.0250.0000.0000.0000.0000.0001 .0840.8630.7690.5380.4320.1620.0770.5450.4940.4290.3060.2120.1280.0900.2370.2260.1510.1461 .3661 .3511 .4931 .4411 .4821 .3201 .0961. 11 90.9940.9940.9120.9300.3990.2270.0150.4400.4550.3140.0950.115

0.0150.0110.0110.3490.3720.2550.2490.2480.2550.3610.3060.1120.2580.3840.4640.5490.5370.5690.5370.5220.3810.3880.0260.0120.0110.0110.0110.0050.0030.1210.1320.1930.3120.3230.4080.4370.2940.2840.2370.2380.0010.0010.0010.0010.0000.0000.0000.0000.0000.0000.0000.0000.5690.7791 .1620.4090.4150.6581 .0951 .096



[7783-06-4)2. Carbon dioxide; C02; [124-38-9)3. Water; H20; [7732-18-5)4. 2-Aminoethanol (monoethanolamine)

C2H7NO; [141-43-5)


ORIGINAL MEASUREMENTS:Lee, J.I.; O~to, P.O.; Mather,A.E.



T/K Hole ratio in the liquidH2S/MEA C02/MEA

313.2 1265158315781559

207.5208.9

14601433113.8489.566.278.6

972 .1388.2832.9

147013941442122225232621

0.4610.5513.12

31.742.465.4

461 .3814.3146.5132.6

21.73.723.100.6200.6411.44

22.112.0

8.274.960.8270.758

10.566.6

134.4102.7182.7

81 .4108.2

38.34.62

373.2 215.5277 .2304.1304.1437.8472 .3

268.9152014891453

10.4834.47

164.81846

221312228779804

186818874169120.0

23064539

1243285

0.0710.0481.15

64.86.01

13.653.177.91

7.312.220.0790.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0005.249.17

50.37.03

24.07.93

16.45.580.000

56.9319.2696.4

102020175092

0.8530.6210.5970.5500.7160.5941 .0030.4530.1100.4500.0610.0290.5640.1190.2850.3251 .0370.4940.2141 .2270.6040.1220.1200.1200.0860.3900.4040.7480.8760.6620.7410.6520.4770.4640.2690.2830.3820.7850.7000.6100.5730.2760.2990.5580.4960.4570.5790.6190.4820.5350.3500.420

0.3870.3090.2510.2260.1770.079

0.2380.5950.6120.6260.1100.214o.1310.7250.6600.4600.6940.8380.5040.9050.8330.9500.1020.7211 .0310.0750.7610.2170.2200.3690.5690.2620.2800.1440.1170.1120.0460.0320.0030.0030.0020.0020.0020.0020.0020.0020.0020.0010.0010.0380.2410.3660.1780.2080.2080.2510.3280.039

0.2430.4010.4930.5680.6750.902



[7783-06-4]2. Carbon dioxide; CO 2 ; [124-38-9]3. Water; H20; [7732-18-5]4. 2-Aminoethanol (monoethanolamine)

C2H7NO; [141-43-5]


ORIGINAL MEASUREMENTS:Lee, J.I.; otto, F.D.; Mather,A.E.



T/K PH2s /kPa Pco/kPa Mole ratio in the liquidH2 S / MEA C02!MEA

373.2 185.5 126.9 0.330 0.332233.0 256.5 0.305 0.405226.1 197.2 0.331 0.389366.8 224.8 0.434 0.334402.6 422.6 0.364 0.430425.4 1136 0.323 0.53752.05 15.7 0.236 0.235

108.9 101 .4 0.224 0.348211 .7 912.4 0.162 0.567244.8 1893 0.119 0.700599.8 1076 0.365 0.481671.5 2679 0.252 0.653556.4 5109 0.156 0.815

1129 339.9 0.685 0.2161270 1150 0.589 0.3803779 54.3 1 .432 0.009682.9 41 .2 0.783 0.036

1751 2166 0.345 0.5911160 4385 0.228 0.774

12.9 243.4 0.013 0.550102.7 82.7 0.176 0.411175.1 186.8 0.294 0.365248.9 224.8 0.296 0.378283.4 795.6 0.220 0.510

3603 18.55 1 .425 0.0043157 157.2 1 .160 0.0323098 134.4 1. 117 0.0273414 660.5 1 .083 0.0973027 1339 0.936 0.222

130.3 7.10 0.560 0.078113.8 20.4 0.396 0.159244.8 33.2 0.539 0.129299.2 28.8 0.636 0.096418.5 167.5 0.505 0.227

3.03 1877 0.000 0.732136.5 2849 0.043 0.777385.4 13.9 0.764 0.031

1084 38.6 0.935 0.0291004 38.4 0.864 0.028376.4 0.496 0.688 0.002244.8 0.296 0.689 0.002580.5 0.861 0.846 0.002544.7 0.785 0.836 0.002

1842 0.958 1.088 0.0002744 1.406 1 .144 0.000

410.2 0.172 0.734 0.000403.3 0.137 0.743 0.000355.8 0.206 0.738 0.002

5.63 2963 0.030 0.7590.000 467.5 0.000 0.6110.000 1993 0.000 0.7730.000 1965 0.000 0.7790.000 5616 0.000 0.9430.000 5523 0.000 0.944

33.4 5634 0.003 0.930295.1 13.8 0.678 0.023180.0 0.372 0.630 0.004616.4 1 .30 0.848 0.004354.4 0.220 0.740 0.001



[ 7783-06-4]2. Carbon dioxide; CO 2 ; [124-38-9]3. Water; H20; [7732-18-5]4. 2-Aminoethanol (monoethanolamine)

C2H7NO; [141-43-5]


ORIGINAL MEASUREMENTS:Lee, J.I.; Otto, F.D.; Mather,A.E.



The tables below, given in the paper, contain smoothed values of the moleratio H2S/MEA in the liquid phase for various partial pressures of H2S inthe gas phase and mole ratios C02/MEA in the liquid phase.

Mole ratioCOdMEA

T/K PH2S/kPa

313.2 0.10.3161 .003.16

10.031 .6

100316

10003000

Mole ratioCO 2/MEA

T/K PH2S

/kPa

313.2 10.031.6

100316

10003000

Mole ratioCO 2/MEA

T/K PH2S /kPa

373.2 0.10.3161.03.16

10.031.6

100316

100030006000

Mole ratioC02/MEA

0.000

0.1020.2020.3330.5270.7300.8660.9661 .0561 .2271 .620

0.700

0.0210.0410.0900.2000.4100.683

0.000

0.0280.0410.0650.1180.2270.4000.6150.8530.9901 .3361.770

0.500

0.100

0.0720.1500.2470.3730.5100.6330.7520.8921 .0781 .325

0.800

0.0190.0540.1370.3150.600

0.100

0.0170.0230.0420.0800.1620.2930.4550.6370.8351. 1101 .410

0.600

0.200

0.050o•1110.1870.2810.3880.4830.5780.7130.8911 .106

0.900

0.0320.1030.2430.510

0.200

0.0100.0110.0230.0530.1170.2250.3600.5200.7100.9421 .132

0.700

0.300

0.0260.0730.1330.2020.2830.3600.4530.5900.7670.968

1 .000

0.0180.0720.1870.420

0.300

0.0040.0150.0370.0780.1580.2740.4200.6000.8220.993*

0.800

0.400

0.0100.0430.0820.1280.1820.2500.3420.4700.6620.883

1 .100

0.0080.0500.1500.322

0.400

0.0030.0220.0510.1000.1970.3330.5020.7070.870*

0.900

0.500

0.0130.0380.0530.0970.1550.2430.3710.5700.817

1 .200

0.0310.1100.250*

0.600

0.0100.0220.0470.0860.1610.2900.5000.750

T/K

373.2

PH2S

/kPa

10.031.6

100.0316

100030006000

0.0270.0660.1420.2520.4050.5850.740*

0.0100.0370.0970.1850.3070.4700.600*

0.0200.0600.1330.2410.3790.487*

0.0370.0950.1870.3030.392*

0.0170.0580.1330.2360.316*

* extrapolated values given by the authors.

136

COMPONENTS:




2. Carbon dioxide; C02; [124-38-9]3. Water; H20; [7732-18-5]4. 2-Arninoethano1, (Monoethano1amin~

C2H,NO; [141-43-5]

Nasir, P.; Hather, A.E.

Can. J. Chern. Eng. 1977,55,715-717.


Pressure C.L. Young

EXPERIMENTAL VALUES: T/K = 373.15

Cone. of monoethano1amine = 5.0 mol dm- 3

PH2S

/kPa Pco/kPat t

ct H2S ctC02

0.0131 0.0103 0.013 0.04050.0152 0.0200 0.0083 0.04750.0455 0.0607 0.010 0.0720.179 0.00214 0.0264 0.0090.324 0.0165 0.025 0.0260.372 0.0262 0.0463 0.0230.531 0.490 0.0133 0.0960.586 0.669 0.013 0.1190.669 0.0145 0.036 0.0120.703 0.331 0.018 0.0780.814 1.131 0.011 0.1160.896 0.434 0.021 0.0821. 03 0.0648 0.032 0.0281.10 0.00896 0.042 0.0061. 22 0.607 0.027 0.0831.36 0.386 0.033 0.061. 76 0.0244 0.053 0.0122.10 1. 21 0.022 0.143.03 0.0138 0.06 0.0043.17 0.896 0.035 0.1993.24 0.193 0.053 0.0383.38 0.848 0.046 0.0923.84 0.793 0.037 0.1034.14 0.0276 0.084 0.0044.20 0.227 0.066 0.037



Nitrogen passes through three 250 m1vessels in series which containedamine solution with a certain amount No details given.of dissolved hydrogen sulfide andcarbon dioxide. Emerging gas fromlast vessel analysed by GC. Hydrogensulfide content determined by iodine-thiosulfate titration and carbondioxide by barium carbonate precipit-ation.

ESTIMATED ERROR:

oT/K = ±0.5; oct = ±6%(estimated by compiler).

REFERENCES:


COMPONENTS:

1. Hydrogen sulfide; H2S; [7783-06-4]2. Carbon dioxide; C02; [124-38-9]3. Water; H2 0; [7732-18-5]4. 2-Aminoethano1, (Monaethana1amine);

C2H,NO; [141-43-5]


Nasir, P.; Mather, A.E.

Can. J. Chern. Eng. 1977,55,715-717.


PH2S/kPa pco/kPat t

a H2S aC02

4.41 0.262 0.063 0.0424.41 0.0690 0.08 0.01244.50 0.103 0.0796 0.024.94 0.0910 0.081 0.01645.24 0.276 0.069 0.0436.41 1.10 0.071 0.1156.81 0.483 0.071 0.0517.17 1.17 0.069 0.1167.28 0.476 0.083 0.0577.65 0.0413 0.119 0.0068.89 0.0565 0.128 0.0069.31 2.96 0.064 0.175

t a.= Mole of species i/ma1e of manaethana1amine.'Z-

138

COMPONENTS:



1. Hydrogen sulfide: H2S:[7783-06-4]

2. Carbon dioxide; C02: [124-38-9]3. water: H20: [7732-18-5]4. 2-Aminoethano1 (MEA), (Mono

ethanolamine): C2H7NO:[141-43-5]

VARIABLES:

Pressure


Isaacs, E. E.: Otto, F. D.:Mather, A. E.

J. Chern. Eng. Data

1980, 25, 118-120.

PREPARED BY:

C. L. Young

T/K

373.15

Cone. MEA P/kPa at/kmo1 m- 3

H2S CO2 H2 S/ MEA C02!MEA

2.5 trace 0.886 trace 0.149trace 0.0337 0.0067 0.06000.0353 0.00714 0.0181 0.01820.0590 0.0198 0.0187 0.03570.0842 0.0297 0.0205 0.03100.0601 0.0140 0.0213 0.02170.0242 0.0408 0.0219 0.03470.138 0.0490 0.0231 0.03120.149 0.0453 0.0232 0.02950.120 0.0331 0.0238 0.02610.121 0.0242 0.0239 0.01970.102 0.0214 0.0247 0.02270.140 0.0163 0.0248 0.02100.211 0.0511 0.0263 0.02970.499 0.565 0.0265 0.1080.237 0.0834 0.0269 0.04670.138 0.0270 0.0272 0.02130.133 0.0222 0.0277 0.02110.131 0.0067 0.0325 0.01000.314 0.0568 0.0326 0.03100.583 0.244 0.0338 0.07910.432 0.155 0.0340 0.04920.544 0.246 0.0365 0.0718

(cont. )



Nitrogen passed through three 250 m1

vessels in series which contained

amine solution with a certain amount

of dissolved carbon dioxide and

hydrogen sulfide. Emerging gas

from last vessel analysed by GC.

Liquid sample taken from last vessel.

Hydrogen sulfide content determined

by iodine-thiosulfate titration

and carbon dioxide by barium

carbonate precipitation.


No details given.

ESTIMATED ERROR:

oT/K = ±0.5: oa = ±6%

(estimated by compiler) •

REFERENCES:


COMPONENTS: ORIGINAL MEASU~MENTS:

1- Hydrogen sulfide; H2 S ; Isaacs, E. E.; Otto, F. D.;[7783-06-4] Mather, A. E.

2. Carbon dioxide; CO2; [124-38-9] J. Chern. Eng. Data3. Water; H2O; [7732-18-5]4. 2-Aminoethano1 (MEA) , (Mono- 1980, 25, 118-120.

ethanolamine); C2 H7NO ;[141-43-5]


Cone. MEA P/kPaat

T/K/kmo1 m- 3

H2 S CO2 H2 S/ MEA C02!MEA

373.15 2.5 0.329 0.0714 0.0369 0.03750.424 0.0906 0.0382 0.03570.260 0.0780 0.0388 0.04060.476 0.0962 0.0400 0.04000.548 0.140 0.0400 0.04920.620 0.137 0.0409 0.04850.458 0.0545 0.0418 0.02540.561 0.126 0.0420 0.04620.778 0.135 0.0425 0.04570.391 0.0048 0.0459 0.00850.823 0.220 0.0504 0.05930.752 0.211 0.0507 0.06100.949 0.242 0.0518 0.07110.928 0.206 0.0536 0.06060.851 0.204 0.0537 0.05161.28 0.438 0.0555 0.08510.932 0.248 0.0567 0.05451.18 0.239 0.0570 0.06860.966 0.116 0.0612 0.03321. 84 0.523 0.0654 0.09411. 24 0.132 0.0735 0.03332.56 0.838 0.0748 0.1151.21 0.0027 0.0755 0.00621.63 0.164 0.0846 0.03272.10 0.195 0.0872 0.04012.03 0.169 0.0924 0.03633.92 1. 36 0.0954 0.1412.81 0.355 0.122 0.04073.36 0.0800 0.136 0.0062

t Mole ratio


COMPONENTS:

1. Hydrogen ~ulfide~ H2S~

[7783-06-4]2. Carbon dioxide~ C02~ [124-38-9]3. Water~ H20~ [7732-18-5]4. Ethanol, 2,2'-iminobis-,

(d~ethanolamine)~ C4HllN02~

[111-42-2]

VARIABLES:

Temperature, pressure, compositionof liquid phase

ORIGINAL MEASUREMENTS:Leibush, A.G.~ Shneerson, A.L.

Zhur. Prik. Khim. 1950, 23, 145-152.J. Applied Chem. USSR 1950,23,149-157.



Concentration of diethanolamine (DEA) 2.0 mol dm-3~ T/K = 298.2

Mole ratios in liquid phaseH2S/DEA C02/DEA

1.72 0.00 0.126 0.0165.13 1 .17 0.126 0.198

18.7 12.4 0.128 0.34223.6 25.0 0.123 0.406

0.77 - 0.027 0.1866.0 0.8 0.149 0.186

23.0 2.6 0.302 0.18667.5 5.4 0.425 0.18992 12.0 0.517 0.195

141 18.5 0.556 0.2031 .3 4.5 0.017 0.3636.1 6.8 0.067 0.363

37 14.4 0.206 0.35561 24.6 0.277 0.363

145 56 0.404 0.324240 80 0.491 0.270

760 mmHg = 1 atm = 1.01325 bar



N2 or a mixture of N2 & H2S waspassed successively through twoabsorbers containing H2S & CO 2dissolved in an aqueous solution ofDEA. The H2S in the emerging gaswas passed into cadmium or zincacetate solution and theprecipitated sulfides estimated byiodimetry. Hydrogen sulfide in theDEA solutions was also determined byiodimetry. CO 2 in the gas phase wasabsorbed in standard baryta solutionafter removal of H2S by acidifiedpotassium permanganate solution.C02 in the liquid phase wasestimated by reaction with 30%H2S04' removal of evolved H2S bypermanganate and absorption ofevolved C02 in standard barytasolution.


1. From H2S04 & Na2S: no S02detected

4. Contained 0.2 to 0.6 volumes ofC02 per unit volume ofsolution~ less than 1% byweight of total impurities.

ESTIMATED ERROR:

6T/K = ± 0.1 (authors)

REFERENCES:


COMPONENTS:1. Carbon dioxide; C02; [124-38-9)2. Hydrogen sulfide; H2S; [7783-06-4J3. 2,2'-Iminobisethanol,

(Diethanolamine); C4HllN02;[111-42-2]

4. Water; H20; [7732-18-5]

ORIGINAL MEASUREMENTS:Lee, J.I.; Otto F.D.; Mather, A.E.

Can. J. Chern. Engng. 1974, 52, 125-7(Complete data in the Centre forUnpublished Data, National ScienceNRC, Ottawa, Ontario, KlA OS2,Canada)

VARIABLES: PREPARED BY:Temperature, pressure, concentration C.L. Young

323.15 1505.80 144.51 1.006 0.1061081.08 2800.62 0.447 0.693

732.90 843.22 0.570 0.433703.94 2149.76 0.381 0.719682.57 404.02 0.703 0.308675.68 5135.17 0.188 0.994632.24 274.40 0.784 0.239629.48 33.57 0.989 0.048600.52 167.54 0.826 0.170508.13 67.56 0.881 0.094488.83 3433.56 0.173 0.977415.75 5343.39 0.125 1.140399.89 1292.75 0.294 0.704359.90 29.16 0.851 0.063340.59 71.01 0.785 0.125299.91 1974.64 0.176 0.902298.54 152.37 0.604 0.285289.23 18.13 0.831 0.053274.40 384.72 0.515 0.447242.69 92.38 0.634 0.250194.43 277 .16 0.361 0.477178.57 1951.20 0.108 0.962158.57 1067.98 0.154 0.856151.68 658.44 0.189 0.742142.72 880.45 0.133 0.812


Nitrogen used as carrier, purity99.99 mole per cent.

SOURCE AND PURITY OF MATERIALS:1. Liquid Air sample, purity 99.9

mole per cent.

2. Matheson sample, purity 99.5 moleper cent.


4. Distilled.

Recirculating vapor flow apparatuswith Jerguson liquid level gaugecell and magnetic pump. Nitrogenadded to vapor to increase pressureto at least 200 kPa. Vapor analysedby gas chromatography. Partialpressure of carbon dioxide andhydrogen sulfide calculated frompressure and vapor pressure ofdiethanolamine. Liquid samplespassed into sulfuric acid. Carbondioxide and hydrogen sulfide collect-~ ~

ed in buret and then analysed by ESTIMATED ERROR:gas chromatography. oT/K = ±0.5; oP/bar = ±l%; oa =

±3-5%.


REFERENCES:


COMPONENTS:

1. Carbon dioxide; CO2 ; [124-38-9]2. Hydrogen sulfide; H2S; [7783-06-4]3. 2,2'-Iminobisethano1

(Diethano1aminel; C4HllN02;[111-42-2]

4. Water; H20; [7732-18-5]


Lee, J.I.; Otto, F.D.; Mather,A.E.

Can. J. Chern. Engng. 1974, 52,125-7.

EXPERIMENTAL VALUES: Solubility of H2S-C02 Mixtures in 2.0 mol dm- 3 DEAa a

T/K PH2S/kPa Pco2 /kPa H2S/DEA CO2/DEA

323.15

373.15

129.6293.0791.3588.2580.8080.6679.6372.3965.7049.1547.4739.7138.1936.8136.2634.5424.7521. 7114.4012.6810.7910.1310.06

7.657.376.616.414.514.133.853.061.570.88

1654.721378.941027.31

985.94983.87916.99889.41872.17848.04686.71618.45537.78479.87417.12399.89395.06348.18344.73339.21317.84293.71283.37278.54237.17217.87202.70

5764.657.21

17.92144.78

71.15422.64

82.9433.2347.025.235.51

26.401. 47

152.0216.8259.36

423.3314.89

704.6311.30

0.859.430.89

451. 4627.09

0.55109.62

1.399.371.123.470.300.21

141. 341678.851130.73

277.852772.35

482.622488.984709.08

290.954863.52

98.594907.64444.01

1534.07916.99

1011. 453151. 56

37.57162.71539.85

5129.65760.48382.65

2009.11375.07

1500.28

0.0410.6530.5570.2560.3850.1290.3320.4340.3800.5120.5250.3310.5640.1290.3670.2130.0450.2360.0120.1970.3820.1990.3700.0240.0920.3040.0290.2080.0920.2100.1280.1780.117

1.0720.7130.6650.8200.5040.7260.4750.3600.7490.3000.6950.2200.5250.3270.3620.3560.2160.6340.5540.4050.1260.3180.4060.0940.3280.188

1.2210.0740.1460.5210.3520.7420.4240.2770.3450.1200.0940.3280.0400.6280.2380.4750.7850.3230.8650.3180.0780.2730.0670.8150.4900.0790.6620.1580.4000.1550.2960.0860.076

0.0330.3360.3170.1060.5160.1760.5160.7000.1150.8000.0710.8200.2500.5450.4430.4390.7330.0390.1460.3560.8850.4120.3170.7820.3280.628


COMPONENTS:

1. Carbon dioxide; C02; [124-38-9]2. Hydrogen sulfide; H2S; [7783-06-4]3. 2,2'-Iminobisethanol,

(Diethanolaminel; C4HIIN02;[111-42-2]

4. Water; H20; [7732-18-5]

ORIGINAL }mASUREMENTS:

Lee, J.I.; Otto F.D.; Mather,A.E.

Can. J. Chern. Engng. 1974, 52,

125-7.

EXPERIMENTAL VALUES: Solubility of H2S-C02Mixtures in 2.0 mol dm- 3DEAex ex

T/K PH2S/kPa PCo2 /kPa H2S/DEA C02/DEA

373.15 181. 33179.26177.88170.29159.95153.75135.82128.24115.14113.76105.4897.2181. 0879.9775.8463",1562.0556.7448.5335.7127.5720.6819.3018.2714.7513.5111.4410.139.654.663.260.56

48.673160.53

119.9635.16

5112.42577.08

1571.99235.79

5543.33777.72

2491.05502.62

35.435453.70

990.7665.98

390.9239.23

186.8417.99

7.515650.20

9.031545.10

22.40529.51170.9814.9657.705.871.29

13.61

0.4510.1070.4240.4290.0600.2260.1230.2730.0460.1430.0580.1430.2870.0290.1110.2330.1140.2150.1400.2000.1990.0030.1510.0150.1020.0220.0380.0910.0600.0490.0440.010

0.0880.7880.1700.0900.9400.4610.6430.3210.8970.5260.7820.4730.0980.9620.5850.1920.4620.1270.3640.0920.0501. 0000.0670.6820.1520.5650.4190.1170.2690.0790.0170.148

Solubility of H2S-C02 Mixtures in 3.5 mol dm- 3 DEA

323.13 1509.931450.641071.431026.62

952.84625.34413.68392.30338.52307.50291.64281.30279.23259.93259.24244.07233.73225.45187.53141.34129.48

1606.4659.01

1134.17455.05

4578.081114.87

279.9259.2297.2121 .02

153.063069.521141.075228.25

175.1270.3262.46

229.59521 .92293.02

16.54

0.6521 .0280.5450.7060.2840.3960.5250.7270.6320.7570.5110.0950.1570.0600.4350.5920.4860.3580.1020.2000.554

0.4480.0260.4650.2640.8240.5500.3270.1100.1990.0640.3090.9250.7281 .0000.3570.2050.2810.4190.7040.5630.151


COMPONENTS:

1. Carbon dioxide; C02; [124-38-9]2. Hydrogen sulfide; H2S; [7783-06-4]3. 2,2'-Irninobisethano1,

(Diethano1arnine); C4H11N02;[111-42-2]

4. Water; H20; [7732-18-5]

ORIGINAL HEASUREMENTS:


Can. J. Chem. Engng. 1974,52,125-7

EXPERI~~NTAL VALUES: Solubility of H2S-C02 ~1ixtures in 3.5 Mol drn- 3 DEA

T/K

323.15

373.15

125.13119.96111.14

95.1489.2884.8073.7768.6063.4360.8150.8145.5039.7136.3333.7830.6825.9921 .7117.9917.0916.9614.7512.27

9.378.547.796.095.975.034.704.554.512.390.90

1622.321585.781416.171380.311316.881275.511130.731064.541061.78

993.52754.96703.25670.16665.33501 .93495.03485.38474.35466.77458.49383.69375.07

14.061434.78

35.43477.11

5.1379.28

1159.68258.20

33.2387.0155.70

430.2212.5418.82

438.5046.5332.6820.333.92

128.3774.5322.475.901 .34

31.858.616.83

11 .036.371 .510.82

60.743.480.60

1566.47250.96

1868.46415.75

1533.38361.28

4498.794591.874525.68

287.501840.884919.36

48.95923.88102.04

5024.16683.26

1235.53340.59

1875.3594.11

230.97

0.560.0700.4510.0960.5850.3640.0530.1070.3080.2000.1960.0570.3170.2270.0480.1630.1710.1500.3100.0530.0710.1250.1910.2830.0660.1060.1270.0720.0740.1510.1590.0210.0780.085

0.6040.8010.5900.7280.5660.7160.3140.2960.3560.6890.3500.2160.7030.4100.5910.1530.4100.3220.4800.2430.5150.433

a.C02!DEA

0.1300.8150.2380.6840.0740.3460.7990.6020.3020.4540.4250.6930.2530.3380.7080.4460.3920.3850.1400.5950.5200.4000.2590.0830.4550.3170.2720.3680.3540.1790.1420.5410.2700.148

0.2430.0590.2930.0830.2790.1060.5370.5960.5060.0990.4050.5940.0270.3180.0710.6810.3040.3980.1810.4870.0860.173

COMPONENTS:



145

1. Carbon dioxide~ C02~ [124-38-9]2. Hydrogen su1fide~ H2S~ [7783-06-4]3. 2,2'-Iminobisethano1,

(Diethano1amine)~ C4HIIN02~

[111-42-2]4. Water~ H20~ [7732-18-5]

Lee, J.I.l Otto, F.D.~Mather, A.E.

Can. J. Chem. Engng. 1974, 52,125-7(Complete data in the Centre forUnpublished Data, National ScienceNRC, Ottawa, Ontario, K1A OS2,Canada)

EXPERIMENTAL VALUES: Solubility of H2S-C02 Hixtures in 3.5 mol dm-.:l DEA

HSD5-F

ct ctT/K P

H2S/kpa Pco/kPa H2S/DEA C02!DEA

373.15 337.84 5388.20 0.067 0.755320.60 654.99 0.278 0.332307.50 6.17 0.545 0.005285.44 82.04 0.445 0.091258.55 2571.72 0.127 0.626255.10 2369.01 0.132 0.639222.00 4607.03 0.082 0.725203.39 723.94 0.204 0.416199.94 575.70 0.221 0.374195.12 891.48 0.160 0.472131 .68 5.53 0.386 0.016117.89 151.68 0.227 0.238111. 55 1 .65 0.342 0.006108.93 48.67 0.278 0.124

96.52 49.09 0.228 0.12985.90 81 .15 0.190 0.19266.25 11 .58 0.239 0.04561 .43 31 .23 0.210 0.11859.29 1625.77 0.043 0.60256.19 619.14 0.072 0.47052.88 919.75 0.056 0.55049.64 181.33 0.103 0.32543.78 266.13 0.078 0.38737.71 32.12 0.148 0.13630.61 193.74 0.070 0.36424.20 0.82 0.142 0.00615.03 53.77 0.072 0.22611 .85 1.44 0.102 0.007

9.23 9.28 0.065 0.0886.41 3.61 0.066 0.040

ct :: Mole ratio in liquid phase.


COMPONENTS:1. Carbon dioxide; CO 2 ; [124-38-9]2. Hydrogen sulfide; H2S;

[7783-06-4]3. 2,2'-iminobisethanol;


4. Water; H20; [7732-18-5]

EXPERIMENTAL VALUES:The tables give smoothed values of thephase for various partial pressures ofCO 2 /DEA in the liquid phase.

Concentration of diethanolamine (DEA)

ORIGINAL MEASUREMENTS:Lee, J.I.; otto, P.D.; Mather, A.E.

Can.J.Chem.Eng., 1974, 52, 125 - 127.(Complete data in the Centre forUnpublished Data, National ScienceLibrary, National Research Council,Ottawa, Ontario K1A OS2, Canada)

mole ratio H2S/DEA in the liquidH2S in the gas phase and mole ratios

2.0 mol dm- 3

Mole ratioC02!DEA 0.000 0.100 0.200 0.300 0.400 0.500 0.600

323.2 0.0100 0.0689 0.028 0.021* 0.011* 0.0054* 0.0021* 0.0009* 0.00042*0.0316 0.218 0.068 0.050* 0.028* 0.016* 0.0073* 0.0034* 0.0016*0.100 0.689 0.136 0.097* 0.062* 0.036* 0.021* 0.011* 0.0056*0.316 2.18 0.230 0.172 0.120 0.079 0.052 0.033* 0.019*1.00 6.89 0.382 0.290 0.225 0.153 0.120 0.080 0.0503.16 21.8 0.562 0.455 0.353 0.266 0.208 0.151 0.107

10.0 68.9 0.730 0.612 0.501 0.406 0.327 0.254 0.19531 .6 218 0.875 0.760 0.654 0.555 0.464 0.378 0.310

100 689 1.002 0.906 0.815 0.707 0.625 0.530 0.450200 1379 1 .215 1.005 0.910 0.808 0.720 0.632 0.546

Mole ratioCO 2/DEA 0.700 0.800 0.900 1 .000 1 .100 1 .200

T/K PH 2S PH2S

/psia /kPa**

323.2 0.0100 0.0689 0.00021*0.0316 0.218 0.00088*0.100 0.689 0.00275* 0.0013*0.316 2.18 0.0090 * 0.0044* 0.0019*1 .00 6.89 0.028 0.015 0.0070*3.16 21.8 0.065 0.040 0.023

10.0 68.9 0.145 0.096 0.061 0.041 0.029 0.02131.6 218 0.246 0.189 0.136 0.100 0.073 0.056

100 689 0.380 0.315 0.250 0.198 0.154 0.118*200 1379 0.473 0.410 0.340* 0.280* 0.223* 0.179*

Mole ratioCO 2/DEA 0.000 0.100 0.200 0.300 0.400 0.500 0.600

T/K PH2S PH2S

/psia **/kPa

373.2 0.0100 0.0689 0.0026* 0.0017* 0.0011*0.0316 0.218 0.0084* 0.0067* 0.0037* 0.023* 0.0014* 0.0008*0.100 0.689 0.023 0.0165* 0.0108* 0.0069* 0.0044* 0.0025* 0.0014*0.316 2.18 0.055 0.038* 0.027* 0.0176* 0.0117* 0.0068* 0.0040*1.00 6.89 0.120 0.082 0.060 0.042 0.029 0.018 0.0113.16 21.8 0.208 0.158 0.122 0.092 0.068 0.047 0.029

10.0 68.9 0.348 0.286 0.237 0.197 0.158 0.122 0.08831 .6 218 0.535 0.471 0.412 0.358 0.300 0.250 0.200

100 689 0.808 0.726 0.650 0.579 0.507 0.443 0.380316 2180 1.200 1.040 0.950 0.870 0.792 0.725 0.650

** * extrapolated values given by the authors.calculated by the compiler.



[7783-06-4]3. 2,2'-Iminobisethanol;

(Diethanolamine); C~HllN02;

[111-42-2]4. Water; H20; [7732-18-5]

ORIGINAL MEASUREMENTS:Lee, J.I.; otto, F.D.; Mather, A.E.

Can.J.Chem.Eng., 1974, 52, 125 - 127.(Complete data in the Centre forUnpublished Data, National ScienceLibrary, National Research Council,Ottawa, Ontario K1A 082, Canada)

EXPERIMENTAL VALUES:The tables give smoothed values of the mole ratio H2S/DEA in the liquidphase for various partial pressures of H2S in the gas phase and mole ratiosCO 2/DEA in the liquid phase.

Concentration of diethanolamine (DEA) = 2.0 mol dm- 3

Mole ratioC02!DEA 0.700 0.800 0.900 1.000 1 .100 1 .200

T/K PH2S PH2S

/psia /kPa**

373.2 0.100 0.0689 0.0007*0.316 2.18 0.0021* 0.0011*1.00 6.89 0.0060 0.00343.16 21.8 0.017 0.011 0.006 0.003*

10.0 68.9 0.057 0.039 0.028 0.017* 0.0108* 0.0065*31 .6 218 0.150 0.115 0.086 0.060* 0.044* 0.032*

100 689 0.322 0.270 0.220 0.171 * 0.139* 0.109*316 2180 0.573 0.511 0.450* 0.383* 0.323* 0.276*

Concentration of diethanolamine (DEA) = 3.5 mol dm- 3

Mole ratioC02!DEA 0.000 0.100 0.200 0.300 0.400 0.500 0.600

T/K PH2S PH2S

/psia /kPa**

323.2 0.0100 0.0689 0.012* 0.0072* 0.0040* 0.0021*0.0316 0.218 0.040* 0.023 0.0135* 0.0078* 0.0044* 0.0024* 0.00102*0.100 0.689 0.087 0.058 0.036 0.024 0.013* 0.0073* 0.0037*0.316 2.18 0.160 0.123 0.088 0.054 0.035 0.0190 0.01051.00 6.89 0.278 0.218 0.164 0.110 0.073 0.045 0.0293.16 21.8 0.422 0.348 0.272 0.205 0.145 0.095 0.060

10.0 68.9 0.520 0.510 0.420 0.328 0.245 0.170 0.12031.6 218 0.782 0.673 0.572 0.472 0.376 0.288 0.215

100 689 0.920 0.825 0.726 0.632 0.532 0.434 0.345316 2180 1 .144 1 .007 0.907 0.804 0.710 0.605 0.520

Mole ratioCO 2/DEA 0.700 0.800 0.900 1 .000 1 .100 1 .200

T/K PH2S PH2S

/psia /kPa**

323.2 0.0316 0.218 0.0006* 0.00034*0.100 0.689 0.0019* 0.0010*0.316 2.18 0.0056* 0.0030* 0.00145*1.00 6.89 0.0155 0.0086* 0.0041* 0.0021*3.16 21.8 0.038 0.023 0.0120 0.0065* 0.0035*

10.0 68.9 0.080 0.055 0.0335 0.0195 0.0120* 0.0070*31.6 218 0.150 0.110 0.076 0.050 0.0340* 0.0230*

100 689 0.273 0.210 0.155 0.120* 0.090* 0.065*316 2180 0.440 0.360 0.296* 0.244* 0.200* 0.160*

*** extrapolated values given by the authors.calculated by the compiler.



[7783-06-4]3. 2,2'-Iminobisethanol;


4. Water; H20; [7732-18-5]

EXPERIMENTAL VALUES:The tables give smoothed values of thephase for various partial pressures ofC02/DEA in the liquid phase.

Concentration of diethanolamine (DEA)

ORIGINAL MEASUREMENTS:Lee, J.I.; otto, P.D.; Mather, A.E.

Can.J.Chem.Eng., 1974, 52, 125 - 127.(Complete data in the Centre forUnpublished Data, National ScienceLibrary, National Research Council,Ottawa, Ontario K1A OS2, Canada)

mole ratio H2S/DEA in the liquidH2S in the gas phase and mole ratios

3.5 mol dm- 3

Mole ratioCO 2/DEA

T/K

0.000 0.100 0.200 0.300 0.400 0.500 0.600

373.2 0.0100 0.0689 0.0019* 0.0011* 0.0007*0.0316 0.218 0.0062* 0.0039* 0.0024* 0.0014* 0.0007* 0.0003*0.100 0.689 0.020 0.0110* 0.0070* 0.0040* 0.0022* 0.0010*0.316 2.18 0.038 0.0275* 0.0185 0.0113* 0.0066* 0.0034* 0.0016*1.00 6.89 0.078 0.060 0.045 0.032 0.019* 0.010* 0.0052*3.16 21 .8 0.155 0.120 0.092 0.070 0.049 0.034 0.017

10.0 68.9 0.282 0.230 0.185 0.144 0.109 0.081 0.05331 .6 218 0.475 0.393 0.324 0.262 0.212 0.161 0.119

100 689 0.712 0.605 0.518 0.434 0.363 0.297 0.226316 2180 0.942 0.815 0.711 0.630 0.547 0.470 0.388

Mole ratioC02/DEA 0.700 0.800 0.900 1 .000 1 .100 1.200

T/K PH 2S PH2S

/psia /kPa**

373.3 1.00 6.89 0.0025* 0.0010*3.16 21.8 0.0093* 0.0037*

10.0 68.9 0.031 0.013 0.0080* 0.0040* 0.0022* 0.0011*31 .6 218 0.082 0.046 0.0290* 0.0185* 0.0118* 0.0066*

100 689 0.165 0.116 0.082* 0.060* 0.043* 0.030*316 2180 0.313* 0.248* 0.195* 0.150* 0.122* 0.096*

** * extrapolated values given by the authors.calculated by the compiler.



1. Carbon dioxide; CO 2; [124-38-9] Lawson, J.D. and Garst, A.W.2. Hydrogen sulfide; H2S; [7783-06-4]3. Water; H20; [7732-18-5] J. Chem. Engng. Data, 1976, 21,4. 2, 2 '-rminobisethanol, 20-30.



Temperature, pressure C.L. Young

149

EXPERIMENTAL VALUES:+T/K PH2s/bar Conc.of DEA

/wt%

Liquid compmol/mol amineH2S C02

310.93 0.000130.000170.000250.000270.000730.000520.00130.00710.00550.00331.293.560.0840.0310.0210.0130.2173.330.0920.3730.0362.310.1150.2220.885

25

3.241.720.136

0.023

0.54112.66

0.0330.493

3.18

0.0770.613


0.00420.00450.00740.00770.00950.01250.01220.0580.0590.0620.1060.1110.1200.1240.1240.1270.1520.2200.2370.2390.2510.3840.4420.4420.441

0.06760.09900.1300.0810.2120.1130.2300.2210.2140.1090.7340.7150.4780.2110.2270.1180.6050.9300.3100.5270.1600.6300.1120.2160.410


Rocking equilibrium cell fitted withliquid and vapour sampling valves.Pressure measured with Bourdongauge.

Cell charged with amine then gasesand methane added as an inert gas toachieve the desired total pressure.

Vapour phases analysed by massspectrometry. Liquid samplesanalysed by electrometric titration,details in source. Additionalanalytical methods were used forsome samples.

1. Purity 99.99 mole per cent.2. Purity 99.5 mole per cent.3. Distilled.4. Commercial sample purity better

than 99 mole per cent as determined by acid titration.

ESTIMATED ERROR~

oT/K = ±0.15 at 310 K increasing to±0.6 at 422 K; oP/bar = ±0.5%;oX

C02= ±3%.

REFERENCES:


CQI.1PONENTS:

1. Carbon dioxide; C02; [124-38-9]2. Hydrogen sulfide; H2S; [7783-06-4]3. ~Jater; H20; [7732-18-5]4. 2, 2 '-Iminobisethano1,

(Diethano1aminel; C4Hl1N02;[111-42-2]

EXPERIl1ENTAL VALUES:

ORIGINAL HEASUREMENTS:


J.Chem.Engng. Data. 1976, 21,20-30.

T/K +PC0 2/bar Cone. of DEA

/wt%Liquid eomp

mol/mol amineH2S C02

310.93

324.82

338.71

352.59

366.48

3.802.120.8131.410.440

12.1819.98

8.53

3.4011. 32

9.99

0.000650.000870.00210.00150.00120.00430.00450.00510.01600.00650.4800.1930.1640.0630.0430.4130.6001. 570.2853.330.1432.3981. 3590.5860.4283.7971. 6652.1450.9731.3728.660

21. 9811. 7813.5911. 99

3.06414.0012.66

0.00810.00610.00350.00950.00910.053

4.201. 080.2200.2000.03464.010

15.321. 35

14.125.201. 93

0.040

3.9300.6000.5000.0670.01471. 571. 036.050.157

18.650.00314.7961. 330.2440.0605.0630.7461. 2260.1150.4264.450

21.182.5855.4622.651

1. 8656.9282.731

0.229

0.040

0.085

25 0.5230.5850.6070.6310.6350.8610.9661. 020

0.2500.9971. 050

0.00400.00410.00970.00990.01260.01280.02910.02940.05120.05940.1050.1130.1140.1180.1200.1470.2090.2140.2520.2560.2570.3750.4130.4370.4430.5100.5260.5760.6240.6360.8550.9240.9900.9761.010

0.2550.9200.920

0.01130.01250.03140.03270.03340.0710

0.6000.3810.2810.2580.1140.2640.6880.119

0.8900.2770.161

0.0650.0800.1090.0620.1070.2380.0740.1270.2330.1150.6540.4570.4950.2150.1080.5960.4520.6660.2850.8420.1290.5670.4100.2070.1160.5060.2520.2980.1140.2180.1560.5470.1180.2720.140

0.7700.2380.139

0.2140.1090.0540.0850.0630.122

COHPONENTS:


ORIGINAL HEASUREHENTS:

151

1.Carbon dioxide: C02: [124-38-9]2.Hydrogen sulfide: H2S: [7783-06-4]3.Hateri H20; [7732-18-5]4.2,2'-Iminobisethanol,

(Diethanolamine): C4HllN02;[111-42-2)



J. Chern. Engng. Data, 1976, 21,20-30.

T/K +PCo 2/ bar Cone. of DEA

/wt%Liquid comp

mol/mol amineH2S C02

366.48

380.37

394.26

310.93

338.71

366.48

0.5930.2930.1350.5600.7460.6080.3820.3062.9312.664

21.8513.8615.05

2.00014.2516.39

0.0085

0.01350.3100.2280.3730.2800.2460.8660.4410.7860.6930.7594.54

14.6516.5220.12

0.000160.693

0.0011

0.00352.398

5.2621.1720.1563.7843.6641. 6250.5200.203

17.991.972

21. 983.5047.594

19.324.2768.3930.906

4.1304.5036.3281. 2231. 892

19.581.1993.1440.9990.4264.254.669.59

22.91

0.600

0.0855.595

25

50

0.1070.1140.1290.1290.1560.1830.1960.1960.2550.4960.8810.9150.935

0.1720.8700.9220.0056

0.01350.03910.04720.05320.06270.07360.08740.1240.1260.1570.1760.4880.8250.8400.822

0.00260.260

0.0030

0.00280.233

0.5430.3530.1230.5330.4740.3540.2450.1170.7100.2070.3950.1230.230

0.7300.1270.2100.185

0.1070.3490.3780.4480.1970.2380.6500.2820.2730.1320.0700.2180.1170.2100.405

0.1110.438

0.114

0.1160.390

+ partial pressure calculated by compiler using 1 bar = 750.062 mmHg



[7783-06-4]2. Carbon dioxide; CO 2 ; [124-38-9]3. Water; H20; [7732-18-5]4. Ethanol, 2,2'-iminobis

(diethanolamine); C4HllN02;[111-42-2]

VARIABLES:


ORIGINAL MEASUREMENTS:Lal, D.; otto, F.D.; Mather, A.E.

Can.J.Chem.Eng. 1985, 63, 681 - 685.

PREPARED BY:

P.G.T. Fogg



T/K PH2s

/kPa Pco/kPa Mole ratio in Mole ratio in

liquid, H2S/DEA liquid, CO 2/DEA

313.2 0.060 0.165 0.0182 0.1730.069 0.068 0.0352 0.1030.127 0.057 0.053 0.0830.329 0.224 0.055 0.1780.431 0.250 0.061 0.1820.187 0.070 0.064 0.0930.188 0.075 0.073 0.1010.410 0.070 0.083 0.1010.573 0.133 0.090 0.1300.784 0.470 0.090 0.2260.625 0.252 0.091 0.1800.782 0.369 0.092 0.2070.387 0.033 0.101 0.0580.524 0.057 0.105 0.0771 .057 0.270 0.119 0.165



Apparatus described in ref. (1) was

used. Nitrogen was passed through

three 500 cm 3 stainless steel

vessels in series. These contained

amine solution, dissolved H2S and

CO 2 , Temperatures were controlled

to ± 0.5 K by an oil-bath. The gas

emerging from the last vessel was

analysed by gas chromatography.

Samples of liquid from this vessel

were analysed for H2S by

iodine-thiosulfate titration and for

CO 2 by precipitation as barium

carbonate and then titration with

hydrochloric acid.


4. supplied by Dow chemicals.

ESTIMATED ERROR~

oT/K = ± 0.5 (authors)op/P = ± 0.15 at PH S > 0.05 kPa;larger at lower 2partial pressures (authors).

REFERENCES:

1. Isaacs, E.E.; otto, F.D.;Mather, A.E. J.Chem.Eng.Data 1980,25, 118.

COMPONENTS:



153


2. Carbon dioxide; C02; [124-38-9)3. Water; H20; [7732-18-5)4. Ethanol, 2,2'-iminobis

(diethanolamine); C4HllN02;[111-42-2)


Lal, D.; otto, F.D.; Mather, A.E.

Can.J.Chem.Eng. 1985, 63, 681 - 685.


T/K Mole ratio in

liquid, H2S/DEA

Mole ratio in

liquid, C02/DEA

313.2

373.2

HSDS-F'

0.633 0.099 0.120 0.0950.700 0.048 0.131 0.0620.881 0.090 0.134 0.0931 .452 0.292 0.141 0.0720.930 0.062 0.153 0.1700.897 0.114 0.154 0.1071 .001 0.041 0.155 0.0451 .039 0.215 0.172 0.1461 .390 0.283 0.172 0.1481 .190 0.254 0.174 0.1491 .108 o•116 0.177 0.0901 .344 0.063 0.185 0.0681 .243 0.068 0.186 0.0672.231 0.450 0.191 0.1751 .405 0.365 0.198 0.1531 .004 0.141 0.200 0.0873.392 0.549 0.203 0.1821 .347 0.120 0.208 0.1002.286 0.525 0.209 0.1883.185 0.332 0.247 0.141

0.015 0.749 0.0064 0.0420.022 4.077 0.0064 0.0990.078 3.266 0.0095 0.0980.132 4.571 0.0100 0.1230.197 1.018 0.0142 0.0410.263 1.472 0.0155 0.0620.324 1 .423 0.0168 0.0590.467 1 .918 0.020 0.0640.651 4.015 0.022 0.1040.787 5.015 0.025 0.1050.304 0.0057 0.025 0.00480.762 1 .998 0.026 0.0600.680 4.668 0.027 0.1280.685 1 .294 0.030 0.0501.272 6.026 0.032 0.1370.614 4.548 0.033 0.0900.541 4.970 0.036 0.1001. 319 3.409 0.037 0.0910.614 0.426 0.037 0.0241 .460 3.739 0.041 0.087

154

COMPONENTS:



1. Hydrogen sulfide; H2 S;[ 7783-06-4)

2. Carbon dioxide; CO 2 ; [124-38-9)3. Water; H20; [7732-18-5)4. Ethanol, 2,2'-iminobis

(diethanolaminel; C4HIIN02;[111-42-2)


Lal, D.; otto, P.D.; Mather, A.E.

Can.J.Chem.Eng. 1985, 63, 681 - 685.

Concentration of diethanolamine = 2.0 kmol m- 3 (2.0 mol dm- 3 l

T/K

373.2 1.2652.1011 .1891 .6071 .9141 .8592.2132.2952.4891 .5671 .7401.9422.1771 .6233.1532.2923.2032.1163.2161 .9403.0352.2733.2213.5983.0003.6493.6463.0913.5553.4924.2643.2084.7934.1023.6755.7323.8684.8325.0674.726

PC0 2/kPa

1.6386.4690.7521 .8383.1403.5684.6475.2530.3931 .3051 .9193.5261.6990.7013.5474.3764.5190.3124.8730.1452.6671 .8432.4052.0072.8741 .5682.6920.2430.1050.1212.0480.7381 .7312.0930.0875.2340.1801.0390.8340.318

Mole ratio in

liquid, H2S/DEA

0.0430.0450.0450.0470.0470.0470.0470.0480.0490.0500.0500.0510.0560.0590.0600.0620.0650.0670.0690.0690.0720.0720.0740.0830.0840.0840.0860.0880.0930.0940.0940.0960.0970.1030.1030.1030.1060.1170.1190.124

Mole ratio in

liquid, COdDEA

0.0510.1060.0320.0600.0650.0770.1180.1150.0190.0500.0510.0830.0400.0270.0750.1000.0850.0130.1030.00820.0720.0530.0640.0550.0700.0350.0640.00760.00480.00770.0530.0240.0410.0390.00420.0820.00800.0310.0180.0092

COMPONENTS:



155


2. Carbon dioxide; C02; [124-38-9]3. Water; H20; [7732-18-5]4. 2-(2-Aminoethoxy)ethanol,

(diglycolamine); C4HllN02;[929-06-6]

VARIABLES:

Temperature, composition of liquidand gas phases.


Dingman, J.C.; Jackson, J.L.;Moore, T.F.; Branson, J.A.

Proc. 62nd Annual Convention of theGas Processors Association, 1983,256-268. --

PREPARED BY:

P.G.T. Fogg

Concentration of diglycolamine (DGA) in aqueous solution before additionof gas = 65 wt %

T/oF T/K* Mole ratio Partial pressure Partial pressurein liquid phase of CO 2 of H2SCOdDGA H2S/ DGA /psia /kPa* /psia /kPa*

100 310.9 0.0026 0 0.0000290 0.000200 0.0 00 0.0027 0.0 0 0.0000480 0.0003310 0.0029 0.0 0 0.000133 0.0009170 0.0039 0.0 0 0.0000580 0.0004000 0.0050 0.0 0 0.000232 0.001600 0.0104 0.0 0 0.00116 0.008000 0.0114 0.0 0 0.000812 0.005600.0140 0.0014 0.00029 0.00200 0.000062 0.0004270.0145 0.0030 0.00029 0.00200 0.000422 0.002910 0.0205 0.0 0 0.00296 0.02040.0213 0.0022 0.000319 0.00220 0.000319 0.002200.0271 0.0012 - - 0.0000430 0.0002960.0306 0.0010 0.000841 0.00580 0.0000810 0.0005580 0.0335 0.0 0 0.00723 0.04980 0.0412 0.0 0 0.00952 0.06560.0440 0.0020 0.0000870 0.000600 0.000319 0.002200.0474 0.0008 0.000232 0.00160 0.0000640 0.0004410.0503 0.0031 0.000232 0.00160 0.000841 0.005800.0537 0 0.000232 0.00160 0.0 00.0547 0.0023 - - 0.000435 0.003000.0624 0 0.000174 0.00120 0.0 00.0643 0.0010 0.000290 0.00200 0.000133 0.0009170.0630 0.0054 0.000232 0.00160 0.00263 0.01810.0610 0.0112 0.00104 0.00717 0.00422 0.02910 0.0820 0.0 0 0.0191 0.1320.0926 0 0.000890 0.00614 0.0 0

* calculated by the compiler.



Aqueous solution of DGA (600 cm 3) was No information.

placed in a stainless steel equilibriumvessel of capacity 1700 cm 3

• The spaceabove the was flushed with methane andH2S and/or CO 2 passed into the vessel to ESTIMATED ERROR:appropriate partial pressures. The totalpressure was maintained at 1500 mmHg byaddition of methane. The vessel wasrocked in a constant temperature bath for1 - 2 h. The vapor phase was analysed REFERENCES:by gas chromatography. CO 2 in the liquidphase was determined by acidification andmeasurement of the evolved gas. The H2Sin this phase was determined by titrationwith standard copper(II) nitrate.



1. Hydrogen sulfide; H2S; Dingman, J.C.; Jackson, J.L.;[7783-06-4] Moore, T.P.; Branson, J.A.

2. Carbon dioxide; CO 2 ; [124-38-9]3. Water; H2O; [ 7732-18-5] Proc. 62nd Annual Convention of the4. 2-(2-Aminoethoxy)ethanol, Gas Processors Association, 1983,

(diglycolamine); C4HllN02; 256-268.[929-06-6]


Concentration of diglycolamine (OGA) in aqueous solution before additionof gas = 65 wt %

T/oP T/K* Mole ratio Partial pressure Partial pressurein liquid phase of CO 2 of H2SCO 2/OGA H2S/0GA /psia /kPa* /psia /kPa*

100 310.9 0.0935 0.0016 0.000957 0.00660 0.000725 0.005000.0960 0.0009 0.000580 0.00400 0.000120 0.0008270.0922 0.0107 0.000754 0.00520 0.00638 0.04400.1030 0.0 0.000638 0.00440 0.0 00.1000 0.0030 0.00551 0.0380 0.00197 0.01360.1110 0.0004 0.000638 0.00440 0.0000410 0.0002830.1150 0.0021 - - 0.00102 0.007030.0953 0.0235 0.000890 0.00614 0.0119 0.08200.1170 0.0062 0.00174 0.0120 - -0 0.1250 0.0 0 0.0638 0.4400.1250 0.0053 0.000609 0.00420 0.00395 0.02720.1350 0.0022 0.00113 0.00779 0.00193 0.01330.1540 0.0011 0.00116 0.00780 0.000870 0.006000.1600 0.0004 0.00122 0.00841 0.0000850 0.0005860.0470 0.1170 - - 0.105 0.7240.1650 0.0012 0.00145 0.0100 0.000580 0.004000.1680 0.0026 0.00197 0.0136 0.00317 0.02190 0.1760 0.0 0 0.0544 0.3750.0920 0.0880 - - 0.0302 0.2080 0.1940 0.0 0 0.142 0.9790 0.2190 0.0 0 0.208 1. 430.0900 0.1320 - - 0.115 0.7930.2250 0.0023 0.00308 0.0212 0.00354 0.02440.2280 0.0009 0.00337 0.0232 0.000841 0.005800 0.2300 0.0 0 0.186 1.280.0926 0.1380 0.00180 0.0124 0.185 1.280.2340 0.0004 0.00352 0.0243 0.000240 0.001650.1900 0.0470 - - 0.0841 0.5800.2500 0.0004 0.00575 0.0396 0.000422 0.002910.2660 0.0012 0.00275 0.0190 0.00183 0.01260.0460 0.2220 - - 0.319 2.200.1890 0.0800 - - 0.116 0.8000.2590 0.0102 0.00516 0.0356 0.0148 0.1020.1900 0.0800 - - 0.128 0.8830.2700 0.0020 0.00642 0.0443 0.00379 0.02610.2790 0.0050 0.00279 0.0192 0.00809 0.05580.0930 0.1920 - - 0.242 1.670 0.2920 0.0 0 0.244 1.680.2920 0 0.0108 0.0745 0.0 00.2910 0.0011 0.00747 0.0515 0.00296 0.02040 0.3000 0.0 0 0.263 1 .810.1870 0.1210 0.00967 0.0667 0.171 1 .180.3120 0.0009 0.0109 0.0752 0.00255 0.01760.2820 0.0422 0.0151 0.104 0.0468 0.3200.0920 0.2380 - - 0.389 2.680 0.3390 0.0 0 0.422 2.910.0920 0.2550 - - 0.545 3.760.1840 0.1680 0.0116 0.0800 0.267 1 .840.3590 0 0.0511 0.352 0.0 00.3620 0.0003 0.0209 0.144 0.00139 0.009580.2750 0.0882 0.0213 0.147 0.217 1.500.0930 0.2980 - - 0.696 4.800.0480 0.3450 - - 0.584 4.03


COMPONENTS:



157


2. Carbon dioxide; C02; [124-38-9]3. Water; H20; [7732-18-5]4. 2-(2-Aminoethoxy)ethanol,




Proc. 62nd Annual Convention of theGas Processors Association, 1983,256-268. ----

Concentration of diglycolamine (OGA) in aqueous solution before additionof gas = 65 wt %

T/OF T/K* Mole ratioin liquid phaseC02!OGA H2S/0GA

Partial pressureof CO 2

/psia /kPa*

Partial pressureof H2S

/psia /kPa*

100 310.9 0.17400.40300.26700.16600.39400.38800.39000.09300.0830o0.37300.24500.27200.08730.45000.45800.17000.26700.44500.09000.37600.50200.50600.49900.36700.48500.50000.26400.43100.46000.08900.36100.35200.1680o0.16300.24900.16800.08800.34800.5900o0.25100.16200.25100.15400.08800.0865o0.1800o0.09000.1610

0.2240o0.13600.23700.01090.01800.03400.33700.34700.43400.06100.19100.16800.35800.0064o0.29100.20000.02800.39000.1180oo0.00800.14200.02700.01600.25800.09170.06900.44000.17800.19600.38200.55200.39200.32600.41600.50300.2420o0.59200.35700.45000.36800.50800.57700.58300.68300.52700.70200.61300.5500

0.01390.06070.0344

0.04640.07490.0812

0.00.1250.05740.08410.006040.3480.286

0.05800.596

0.4121 .831.772.030.7583.752.360.145

11 .47.95

2.034.14

0.00.08410.8280.0812

6.7327.00.01 .440.1312.070.717

0.04290.00.8410.0

1 .31

0.09580.4190.237

0.3200.5160.560

o0.8620.3960.5800.04162.401 .97

0.3404.11

2.8412.612.214.0

5.2325.916.3

1 .0078.654.8

14.028.5

o0.5805.710.560

46.4186.2

o9.930.903

14.34.94

0.296o5.80o

9.03

0.5030.00.5570.7540.0503

0.1660.9171.000.9110.406

0.7371.060.06560.01 .311 .220.4451.081.640.00.00.2322.981.190.4492.518.274.761 .806.81

11. 43.092.243.319.284.803.21

17.60.02.75

14.36.79

18.119.0

6.426.675.51

21.65.808.76

27.1

3.47o3.845.200.347

1 .146.326.896.282.80

5.087.310.452o9.938.413.077.45

11 .3oo1 .60

20.58.203.10

17.357.032.812.447.078.621.315.422.864.033.122.1

121.3o

19.098.646.8

124.8131 .0

44.346.038.0

148.940.060.4

186.8


158

COMPONENTS:




2. Carbon dioxide; CO 2 ; [124-38-9]3. Water; H20; [7732-18-5]4. 2-(2-Aminoethoxy)ethanol,






T/OF T/K* Mole ratioin liquid phaseCO 2 /DGA H2S/ DGA


/psia /kPa*

Partial pressureof H2S

/psia /kPa*

100

140

160

180

310.9

333.2

344.3

355.4

o0.0890o0.06300.04600.08600.0490ooo

0.04430.12000.15300.12000.20300.04430.26000.09890.09440.25000.04190.14200.10730.23300.39800.36500.03700.15300.29100.02280.50200.49000.12100.01640.28300.20400.10800.1030

0.08300.17800.10200.4200

oo0.02030.0367o0.06160.06890.0423

0.71300.63000.74100.68300.70500.66900.74400.83000.83700.8510

0.04660.00950.00910.08780.00940.21300.00770.19500.24100.08610.30400.21100.28500.19400.04130.08160.41700.29700.20000.47500.00690.03250.40500.52000.27000.36800.51900.5360

0.25300.22200.36400.0620

0.01090.0157oo0.06230.01450.01090.0407

0.0

0.00.1160.03770.2320.1070.00.00.0

0.002300.01060.02530.01550.03310.006440.05570.02510.03910.09030.008700.04370.04680.2711.331 .21

1 .130.0124

12.123.0

0.1540.01733.711 .460.3210.627

0.06092.460.2017.14

0.00.00.004370.01970.00.04350.04350.0250

o

o0.8000.2601.600.738ooo

0.01590.07310.1740.1070.2280.04440.3840.1730.2700.6230.06000.3010.3231.879.178.34

7.790.0855

83.4158.6

1 .060.119

25.610.1

2.214.32

0.42017 .0

1 .3949.2

oo0.03010.136o0.3000.3000.172

6.3212.77.76

10.310.415.821.220.022.222.5

0.07540.01170.0263

0.03960.9560.04511 .161 .800.6212.221. 732.803.171 .252.374.414.846.965.800.7164.228.188.51

19.419.517.626.8

3.1322.28.864.62

0.01100.04640.00.00.2710.08700.03770.296

43.687.653.571.071.7

108.9146.2137.9153.1155.1

0.5200.08070.181

0.2736.590.3118.00

12.44.28

15.311.919.321.9

8.6216.330.433.348.040.0

4.9429.156.458.7

133.8134.4121 .3184.8

21 .6153.1

61 .131.9

0.07580.320oo1.870.6000.2602.04


COMPONENTS:



159


2. Carbon dioxide; CO 2 ; [124-38-9]3. Water; H20; [7732-18-5]4. 2-(2-Aminoethoxy)ethanol,






T/OF T/K* Mole ratioin liquid phaseC02/DGA H2S/DGA


/psia /kPa*

Partial pressureof H2 S

/psia /kPa*

0.1250.00.8240.08991.570.01.073.081.180.2553.134.530.00.8820.2505.225.267.587.540.05.924.535.261.530.592

16.415.37.20

23.422.2

4.801.380.0

24.816.426.526.5

180 355.4 0.09760.11600.03720.1180o0.16400.08730.04020.14800.22300.0820o0.25900.22600.28700.09300.1660o0.03680.33300.08800.21600.20900.32500.35500.10200.35200.41400.15500.21700.43700.47400.48800.0966o0.0639o

0.0147o0.08590.01130.1450o0.08500.17600.07010.01510.11600.2590o0.04170.01030.20900.15700.32400.2890o0.24800.12500.13500.04170.01510.35300.11600.05930.32100.26000.04010.0113o0.40100.50800.46100.5270

0.08970.08740.03310.08780.00.1470.1020.04490.2300.4180.1260.00.5880.5570.8550.1860.5340.00.08591 .440.1860.9440.9521 .912.550.631

12.214.6

2.093.40

19.323.826.50.8070.00.3910.0

0.6180.6030.2280.605o1 .010.7030.3101.592.880.869o4.053.845.901.283.68o0.5929.931.286.516.56

13.217 .6

4.3584.1

100.714.423.4

133.1164.1182.7

5.56o2.70o

0.862o5.680.620

10.8o7.38

21.28.141. 76

21 .631.2o6.081. 72

36.036.352.352.0o

40.831.236.310.5

4.0811 3 • 1105.5

49.6161 .3153.1

33.19.51o

171 .011 3.1182.7182.7

Concentration of DGA before addition of gas = 70 wt %

140160180

333.2344.3355.4

0.32300.31900.3180

0.02300.02200.0230

0.1840.6231. 75

1.274.30

12.1

0.2630.5960.971

1.814.116.69




[ 7783-06-4)2. Carbon dioxide; CO 2 ; [124-38-9)3. Water; H20; [7732-18-5)4. 1,1 '-Iminobis-2-propanol,

(diisopropanolarnine); C6H1SN02;[110-97-4)

VARIABLES:

Temperature, pressure, concentrationof components in liquid phase.

ORIGINAL MEASUREMENTS:Isaacs, E.E.; otto, F.D.; Mather,A.E

Can. J. Chern. Eng. 1977, 55, 210-212(Complete data in the Centre forUnpublished Data, National ScienceLibrary, National Research Council,Ottawa, Ontario K1A OS2, Canada.)



Concentration of OIPA (diisopropanolamine) = 2.5 kmol m- 3 (2.5 mol dm- 3)

T/K PH2s

/kPa Pco/kPa Mole ratios in liquid phaseH2S/DIPA CO 2 /OIPA

313.2 2231.1 201 .3 1 .316 0.0511569.2 104.1 1 .213 0.0401597.5 188.9 1 .174 0.0781969.1 481 .2 1 .130 0.1381687.8 403.3 1 .128 0.1661638.8 328.8 1 .079 0.1431090.0 85.4 1 .057 0.0451307.9 268.2 1 .021 0.1291677.4 758.4 1 .010 0.2461374.8 406.0 1 .001 0.1662091.1 432.2 0.994 0.1182138.0 1396.8 0.976 0.3701119.0 247.5 0.975 0.1421855.3 1263.1 0.956 0.392683.2 63.4 0.933 0.059

1113.4 404.7 0.899 0.2231300.3 646. 7 0.891 0.3071654.0 1411.3 0.877 0.399

776.3 197.1 0.861 0.142



The equilibrium cell consisted of aJerguson gauge with a 250 cm 3

tubular gas reservoir mounted at thetop. Gas was circulated with amagnetic pump (1). Temperatures weremeasured by thermopiles andcontrolled by an air-bath.Pressures were measured by a Heisebourdon tube gauge. The cell wascharged with about 150 cm 3 of OIPAsolution. H2S & CO 2 were added togive appropriate pressures. Nitrogenwas added when necessary to ensurethat the total pressure was above600 kPa. Gases were circulated forat least 4 h. The gas phase wasanalysed by gas chromatography andthe liquid phase by treating sampleswith H2S0 4 (7 mol dm- 3

), recordingP-V-T data for the gases evolved andanalysing them by gaschromatography.


No information

ESTIMATED ERROR:oT/K = ± 0.5o(C0 2/OIPA); o(H 2S/OIPA) = ± 0.02 or4%, whichever is the larger

(authors)REFERENCES:

1. Ruska, W.E.A.; Hurt, L.J.;Kobayashi, R.

Rev. Sci. Inst. 1979, 41, 1444.

COMPONENTS:



161


2. Carbon dioxide; CO 2 ; [124-38-9]3. Water; H20; [7732-18-5]4. 1,1 '-Iminobis-2-propanol,



Isaacs, E.E.; otto, F.D.; Mather,A.E.

Can. J. Chem. Eng. 1977, 55, 210-212.(Complete data in the Centre forUnpublished Data, National ScienceLibrary, National Research Council,Ottawa, Ontario K1A 082, Canada.)

Concentration of DIPA (diisopropanolamine) = 2.5 kmol m- 3 (2.5 mol dm- 3)

T/K Mole ratios in liquid phaseH2S/DIPA CO 2/DIPA

313.2 499.81072.1

914.9349.5

2140.8447.4206.1505.3379.2595.7888.7255.7186.1

85.41958.0144.7117 .8710.1

44.1113.0

80.62496.51891.2150.9734.9106.1

40.6106.1

70.341.3

488.159.299.2

230.224.139.215.817.9

1313.415.8

275.086.158.646.148.915.8

118.584.1

311 .668.2

48.9512.2427.4

35.12332.4

121. 319.9

461 .2192.311 0.3669.4109.6

62.013.0

3834.162.032.4

843.25.5

28.223.4

3810.04177.4133.0

1227.996.515.184.134.413.0

922.532.485.4

336.44.8

16.52.06.2

4489.84.1

663.2164.7

93.048.282.79.6

286.8159.2

1027.9111. 6

0.8590.8560.8210.8110.7900.7220.7190.6550.6510.6500.5980.5940.5930.5830.5540.5350.5000.4980.4980.4980.4700.4370.4320.4180.4170.4110.3970.3870.3810.3790.3770.3760.3700.3670.3660.3420.3410.3390.3290.3270.2580.2540.2530.2510.2510.2390.2390.2360.2330.231

0.0630.2910.2620.0730.5310.1680.0790.3520.2570.0910.3640.2570.1900.0940.7560.2470.1970.5360.1260.2100.1980.8410.8510.3650.6550.3220.2190.3540.2910.2300.6530.2830.3550.5240.1680.2530.0970.1680.9030.1750.6650.5040.4290.3640.4440.2610.5360.4980.7370.464

162

COMPONENTS:




2. Carbon dioxide; CO 2 ; [124-38-9)3. Water; H20; [7732-18-5)4. 1,1 '-Iminobis-2-propanol,

(d2isopropanolamine); C6H1SN02;[110-97-4)


Isaacs, E.E.; Otto, F.D.; Mather,A.E.

Can. J. Chem. Eng. 1977, 55, 210-212.(Complete data in the Centre forUnpublished Data, National ScienceLibrary, National Research Council,Ottawa, Ontario K1A OS2, Canada.)


T/K Mole ratios in liquid phaseH2S/DIPA C02/DIPA

313.2

373.2

894.999.2

273.0273.7894.9

47.5204.028.2

326.1237.1

15 • 110.331.013.0

216.4517.7438.5226.8430.9158.5128.2

1.31 .33.43.46.2

17 .222.0

4126.41797.41819.52748.91851 .91107.92137.31103.11475.42151.12363.5606.0504.6

2080.1875.6617.7

2002.92220.0

591.5774.9810.1753.5

4896.6172.3

1489.9911. 4

4833.1106.1

1047.322.7

3109.51540.9

42.726.8

101. 325.5

5282.05276.54555.33224.65391 .63678.32625.5

8.911 .022.022.770.3

318.5549.5

574.3523.9754.9

2475.11392.7

237.11375.4

324.7999.7

2273.83261.1

212.356.5

4123.0373.6236.4

4029.93727.9

191 .6346.1894.9951 .4

0.2290.2280.2210.2160.1910.1820.1650.1650.1500.1450.1240.1220.1220.1210.1150.115o•1110.0980.0760.0710.0470.0450.0420.0410.0410.0350.0310.028

1.2540.9030.8290.8240.8090.7960.7650.7570.7070.6530.6290.6170.6020.5910.5790.5750.5590.5510.5510.5470.5160.480

0.9700.4940.8020.7301 .0200.4920.7770.3510.9400.8690.4540.4100.5310.4091.0301.0521 .0530.9991.0891.0671 .0110.3650.3920.4650.4520.5540.7310.791

0.0590.0790.1170.2730.1760.0650.2340.0830.2020.3370.3810.0950.0390.4560.1500.0980.4760.4740.0840.1610.2550.278

COMPONENTS:



163

1. Hydrogen sulfide; H2S;[7783-06-4 ]

2. Carbon dioxide; C02; [124-38-9]3. Water; H20; [7732-18-5]4. 1,1 '-Iminobis-2-propanol,






T/K Mole ratios in liquid phaseH2S/DIPA C02/DIPA

373.2 313.7395.7332.3890.1868.7244.7

1567.81109.3

708.0434.3185.4

1296.8162.0211 .6218.5725.3253.0

1005.2146.8384.0219.9302.6

1213.4129.6128.2150.9392.9222.0447.479.280.6

133.0472 .9318.5172.3203.3155.8230.9

53.7187.5224.7

48.9319.2215.1

36.568.9

717.031 .0

344.7374.3

62.0170.9

55.81650.51613.3

35.14374.61851.91233.4

385.448.2

3230.837.2

140.6157.1

1838.8261 .9

2676.526.8

677.7154.4427.4

4767.668.936.5

117.21094.8

288.81272.0

29.617 .2

175.11990.41074.1144.7532.9257.8854.916.5

451 .6743.2

19.31349.2

741.89.6

54.45274.4

11 .02031.83219.8

0.4670.4590.4520.4450.4360.4350.4280.4270.4210.4070.3850.3840.3710.3690.3570.3530.3470.3360.3350.3220.3100.3060.2950.2930.2890.2840.2740.2570.2560.2530.2500.2410.2390.2300.2270.2260.2160.2120.2120.2100.2100.2070.2050.2040.1850.1840.1810.1560.1540.145

0.0600.1150.0530.3580.3530.0490.5370.3800.3090.1790.0810.4650.0600.1390.1 510.4110.2170.5010.0440.2850.1510.2750.6100.1130.0790.1450.3950.2470.4100.0740.0430.1920.5130.4030.1950.3120.2280.3610.0500.2860.3870.0680.4580.3340.0500.1250.6830.0660.5390.600

164

COMPONENTS:




2. Carbon dioxide; C02; [124-38-9]3. Water; H20; [7732-18-5]4. 1,1 '-Iminobis-2-propanol,



Isaacs, E.E.; otto, P.D.; Mather,A.E

Can. J. Chem. Eng. 1977, 55, 210-212(Complete data in the Centre forUnpublished Data, National ScienceLibrary, National Research Council,ottawa, Ontario K1A OS2, Canada.)

Concentration of DIPA (diisopropanolamine) = 2.5 kmol m- s (2.5 mol dm- s )

T/K PH2s /kPa Pco/kPa Mole ratios in liquid phaseH2S/DIPA C02/DIPA

373.2 794.9 4421.5 0.134 0.71543.4 63.4 0.133 0.16153.7 230.9 0.133 0.25825.5 24.1 0.132 0.097

103.4 437.8 0.131 0.32044.8 88.2 0.130 0.18661.3 204.7 0.130 0.264

421 .9 3872.0 0.129 0.704361 .9 3854.1 0.125 0.70732.7 44.5 0.124 0.12192.3 530.2 0.120 0.38794.4 661 .2 0.119 0.40466.8 276.4 0.117 0.30028.9 35.8 0.106 0.106

107.5 1119.0 0.105 0.467196.4 4474.6 0.105 0.699

24.1 22.0 0.103 0.08942.7 88.9 0.101 0.19346.8 177 .8 0.098 0.258

144.0 3454.2 0.097 0.609312.3 5991.4 0.094 0.76242.0 63.4 0.090 0.19870.3 424.7 0.090 0.355

173.0 5239.9 0.087 0.975278.5 5543.3 0.082 0.775323.3 7391.1 0.080 0.825

8.2 4.8 0.064 0.0366.8 4.1 0.063 0.0369.9 22.5 0.054 0.1025.5 4.1 0.053 0.037

11.3 33.8 0.047 0.13495.8 5885.3 0.025 0.78319.9 5619.1 0.018 0.747

152.3 5591 .6 0.005 0.75411 .0 3157.7 0.002 0.644

COMPONENTS:



165


2. Carbon dioxide; CO 2 ; [124-38-9]3. Water; H20; [7732-18-5]4. 1,1 '-Iminobis-2-propanol,





The tables give values of the mole ratio H2S/DIPA in the liquid phase forvarious partial pressures of H2S in the gas phase and mole ratios C02/DIPAin the liquid phase.

Concentration of DIPA = 2.5 kmol m- 3 (2.5 mol dm- 3)

Mole ratioCO 2/DIPA 0.000 0.100 0.200 0.300 0.400 0.500 0.600

T/K

313.2

PH 2S/kPa

1 .03.16

10.031.6

100316

10003000

0.0630.1850.3350.5650.7520.9021 .1261 .620

0.045*0.158*0.2900.4580.6120.7590.9831 .458

0.028*0.136*0.2530.3830.5100.6700.9071 .255*

0.015*0.1080.2050.3100.4290.6060.8381 .165*

0.006*0.0690.1330.2130.3380.5270.7721 .080*

0.029*0.0750.1430.2480.4400.6770.960*

0.010*0.0450.0920.1700.3470.5700.850*

Mole ratioCO 2/DIPA 0.700 0.800 0.900 1 .000 1 .100 1 .200

T/K

313.2

PH2S

/kPa

10.031.6

100316

10003000

0.0240.0630.1330.2630.4720.720*

0.0390.1020.2020.3700.622*

0.0180.0720.1600.2930.488*

I

0.005*0.0470.1230.2320.405*

0.029*0.088*0.1850.340*

0.018*0.067*0.1550.288*

Mole ratioC02!DIPA 0.000 0.100 0.200 0.300 0.400 0.500

T/K

373.2

PH2S /kPa

3.1610.031 .6

100316

10003000

0.0250.0860.1780.3110.5410.8801 .200

0.018*0.0520.1380.2450.4230.7051 .042

0.010*0.0360.0920.2000.3460.5800.880

0.0280.0650.1500.2860.4900.770

0.0200.0530.1200.2390.4120.665

0.015*0.0410.0930.1890.3370.552*

Mole ratioC02!DIPA

T/K PH2S /kPa

373.2 10.031 .6

100.0316

10003000

0.600

0.010*0.0230.0730.1420.2720.470*

0.700

0.016*0.058o•1110.2120.397*

0.800

0.0370.080*0.163*0.331*

0.900

0.024*0.058*0.130*0.286*

1 .000

0.018*0.039*0.107*0.250*

* extrapolated values given by the authors.

Documents

Hydrogen Sulfide in Aqueous Solvents 79 COHPONENTS… · extensively studied during the recent years because aqueous solutions of ... H2S; [7783-06-4] 2. Carbon dioxide; CO 2; [124-38-9]