Technical Documents of the Boiler

7/29/2019 Technical Documents of the Boiler

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Technical Documents of Contract No.CRC2012B1/C155DG4

List of Main Technical Datum of CFB Boiler and Matching

Equipment

No. Name Specification Qty.

1

Body of

the Boiler

Model SHXF15-2.5-AI 1set

Construction of the Body All Membrance

Wall Steel Construction

Measurement of the Body (LxWxH) 9000x6000x17000mm

Rated Evaporation 15 t/h

Rated Steam Pressure 2.5 MPa

Rated Steam temperature 225

Water Flow temperature 104

Primary Air Temperature 80

Secondary Air Temperature 20

Water Volume of Boiler Body 14.5M3

Heated

Surface

Area

Radiation 124M2

Convection 100M2

Economizer 334M2

Air pre-heater 280M2

Fluidized Bed Area 2.29M2

Coal Consumption(Standard coal) 1702Kg/h

Design heat efficiency 89.4%

Exhaust Smoke Temperature 150

Combustion Method Circulation Fluidized Combustion

Required Fuel+ Soft coal + Straw

Calorific Value: Qnet,v,ar = 5500cal/Kg

Size of Fuel:013mm(02mm 20%)

Anti-Seismic intensity

VII ( accord with Chinese Standard)

2 1st Blowing Fan

Model 9-26 7.1D 1pc. Wind volume 14643 M3/h

Air Pressure 12078 Pa

Motor Power 90 Kw

Rotate Speed 2900 r/min.

3 2nd Blowing Fan

Model 9-19 9D 1pc.

Wind volume 9233 M3/h


Motor Power 22 Kw

Rotate Speed 1450 r/min. Model Y6-41 NO11.2D 1pc.


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4 Induced Blowing Fan

Wind volume 43405 M3/h


Motor Power 132 Kw


5 Feed Water Pump

Model DG20-50*7 2pcs.

Flow rate Q=15-30M3 /h Pump Lift H=350 m

Motor Power 55 Kw


6 Economizer Steel Tube & Fin Slice type 1set

Length 2500 mm

7 Electric Cabinet Model LXK-15(Routing Control) 1set

8 Coal Feeder Model LS-200Spiral Type 1pc.

Motor Power 4 Kw

Rotate Speed 125-1250 r/min.9 Valve & Instrument

F15 matching, executing according to the random chart

1set

10 Deaerator

Nominal Output 15 t/h 1pc.

Working Pressure 0.02 Mpa

Operating

Temperature

104

Inflow Water Pressure 0.2 MPa

Inflow Water

Temperature

30

11 Pump for Deaerator

Model IS65-40-200 2pcs.

Flow Rate 25 M3/h

Pump Lift 50 m

Motor Power 7.5 Kw


12

Control System of Deaerator

Matching Deaerator 1pc.

13 Sampler Diameter 273mm 2pcs.

Working Pressure 2.5 MPa

Operating

Temperature

225

14

Continuous Blowdown

Expander

Model LP-1.5 1pc.

Diameter 800 mm


Operating

Temperature

170

Volume 1.5 M3

15

Model DP-3 1pc.

Diameter 1200mm Working Pressure 0.15 Mpa


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Regular Blowdown Expander Operating

Temperature

170

Volume 3M3

16 Sub-Cylinder

Diameter DN500 1pc.

Construction One intake valve and

four exhaust valve Working Pressure 2.5 MPa

Operating

Temperature

225

17 Bag Filter

Model PPC96-7 1set

Discharged Smoke Temperature

170

Discharged Smoke Density

60 g/NM3

Collection Efficiency 99.7%18 Thionizer Smoke Volume 40000 M3/h 1set

19

Fireproofing Material

According to the design, the area of fluidized bed, cyclone

separator, return-feeder will be poured by Corundum fireproof

material

202ton

20

Soot Blowing System15t/h: 6, Matching to 15t/h CFB

boilers: Evaporation tube bundle, Economizer, totally 6 points,

Sound waves.

1pc.

Detailed Description of the Boiler and matching Equipment1DHX15-2.5 CFB Boiler Model DHX15-2.51.1 Main Performance parameter of the Boiler

Name Specification Model SHXF15-2.5-AI

Construction of the Body All Membrance

Wall Steel Construction

Measurement of the Body (LxWxH) 9000x6000x17000mm

Rated Evaporation 15 t/h

Rated Steam Pressure 2.5 MPa

Rated Steam temperature 225

Water Flow temperature 104

Primary Air Temperature 80 Secondary Air Temperature 20

Water Volume of Boiler Body 14.5M3


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Heated

Surface

Area

Radiation 124M2

Convection 100M2

Economizer 334M2

Air pre-heater 280M2

Fluidized Bed Area 2.29M2

Coal Consumption(Standard coal) 1702Kg/h Design heat efficiency 89.4%

Exhaust Smoke Temperature 150

Combustion Method Circulation Fluidized Combustion

Required Fuel+ Soft coal + Straw

Calorific Value: Qnet,v,ar = 5500cal/Kg

Size of Fuel:013mm(02mm 20%)

Anti-Seismic intensity

VII ( accord with Chinese Standard)

1.2 Detailed Description for the construction of Boiler ( omitted)1.3 Material & Standard of the main part of the Boiler

No. Name Specification

Chinese Standard CodeMaterial

U.S.A Standard CodeMaterial

1 Drum 1400*22 GB713Q245R ASTMA516Gr55 OK

2

Membrance water cooled wall

51*5

GB308720

DEBE SER TUBOS DE

CALDERA ITEM 2-8-10

ESTE ULTIMPO NO

MANDATORIO PERO

RECOMENDABLE

ASTM1020

ESTE ES ACERO

ESTRUCTURAL SOLO

APLICACIN

ESTRUCTURAL

3

Water cooled collecting box

219*10

273*12

4 Downtake 108*4

5 Steam Pipe 89*4

6

Control of Evaporator

42*3.5

7

Collecting box of Evaporator

325*12

8

Fin type Economizer

32*3.5

9

Collecting box of Economizer

159*8

10 Air pre-heater 50*1.5

GBQ235-A ASTMA570GrA

11

Steel structural shape and plate

according

to deign12 Out color casing

13

Fluidizer bed cowl GBZG4Cr26Ni6Mn3NRe ASTMZG4Cr26Ni6Mn3NRe

14 Center drum

15 Expansion joint

Metal &Nonmetal

16 Slagging pipe GB1cr18Ni9Ti ASTM1cr18Ni9Ti


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1.4 Structure chart of the Boiler

1.4.1 Elevation of the Boiler

1.4.2 Plan view of the Boiler

2 1st Blowing Fan 110,

1st Blowing Fan System consists of 1 set of centrifuge fan of 110% volume which can


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satisfy boiler operation under full load. After heated by Air pre-heater, primary air enter intohot air-way, and then into air plenum of boiler. The 1st Blowing fan is of high operatingefficiency, well economy and easy examine and repair.

Qty. 1pc. Type 9-26 7.1D

Wind volume 14643 M3/h Air Pressure 12078 Pa Motor Capacity 90 Kw Rotate Speed 2900 r/min

photo ofAir Blower

3 2nd Blowing Fan 110 ,

, 2nd Blowing Fan consists of 1set of high pressure centrifuge fan of 110% volume which

can satisfy boiler operation under full load. Secondary air from nozzle of 2nd blowing fandirectly enter into boiler so that to supply oxygen to enhance combustion efficiency.

Qty. 1pc. Type 9-19 9D Wind volume 9233M3/h Air Pressure 4297Pa Motor Capacity 22 Kw Rotate Speed 1450 r/min

Photo ofSecondary Air Fan


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4 Induced Blowing Fan

Induced Blowing Fan is installed between Bag Filter and Chimney. Smoke aftercombustion are filtered by bag filter, and then injected into atmosphere by induced blowingfan. Induced blowing fan consists of centrifugal fan. Blades of induced blowing fan arespecial treated to increase wear-resisting and prolong performance period.

Qty. 1pc. Type Y6-41 NO11.2D Wind volume 43405 M3/h Air Pressure 5611Pa Motor Capacity 132 Kw Rotate Speed 1450 r/min

Photo of induced Blowing Fan

5 Feed Water Pump 2

Feed Water Pump consists of 2pcs. of motor-driven multistage pump,

one for use and one for standby. Qualified water after deoxidize will be

send to boiler by Feed Water Pump.

Qty. 2pcs. Model DG20-50*7

Flow rate Q=15-30M3 /h

Pump Lift H=350 m

Motor Power 55 Kw


Photo of Feed Water Pump


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6 Economizer Please refer to the List foregoing7 Electric Control System

The Control System of the Boiler includes 2sets of Power Cabinet, 1set of

Instrument Cabinet and 1set of Stokehole Instrument Cabinet. Details are

as follows:

Program of Control System of the Boiler( )

No. Name Model & Specification Qty.

1. Water Level of Boiler Barrel ()a Left Water

Level

Floater Sensor() HUGG-440 1

Liquid Level Adjustor

()

SZD-S-4 1

Control Valve() ZAZP-DN40/PN64 1

b Right Water Level

Electrode Sensor( )

UDZ-SX-15Q 1UDZ-SX-15Q-Z 1

c Water Level Guarder

()

14 color display and Vidicon

(14/+ 1 )

1

2. Air Door adjustment (), including induced air, primary air and secondary airOperator () DFD-09 3

Angle Actuator () DKJ-310 3

3. Adjustment for Coal Feeder ()Manual Operator() JD1A-40 1

4. Pressure

a Vapor Pressure

Transmitter () PMC-800 1

Digital readout () HR-WP-C803 1

b Pressure of feed water ( )

Transmitter () PMC-800 1


c Air Pressure

()

Including Combustion chamber pressure, Air chamber pressure,

Combustion Chamber outlet pressure and Rear smoke pressure of

Economizer


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Transmitter () DFY 5


5. Temperature

a Temperature in boiling layer ( ) Left and Right

Thermocouple ( ) WRN-330N 2

Digital readout () HR-WP-C803 2b Temperature of Return-Feeder () Left and Right

Thermocouple ( ) WRN-330N 1


c Water Temperature in inlet & outlet of

economizer ( )

Thermal Resistance( ) WZP-280 2


d Ejected smoke temperature ()

Thermal Resistance( ) WZP-230 1Digital readout () HR-WP-C801 1

6.Power Control System ( ), including induced air,132KW,star-triangle; primary air,90KW,star-triangle; secondary air,22KW,star-triangle; feed pump,22KW,star-triangle and coal

supply,3KW, straight rise ( 132KW - 90KW -

22KW- 22KW- 3KW)

6.1 Induced Air Air Switch () NM-225 200A 1

A.C. contactor () CJ20-160 2

CJ20-100 1

Protector (

) JR20-160 1Mutual Inductor () LMZ1-0.5 200/5 1

Time Relay () JS14-1A 60S 1

6.2 Primary Air same as the above

6.3 Secondary

Air

Air Switch () DZ47-63 60A 1


CJ20-40 1

Protector () JR20-63 1

Mutual Inductor () LMZ1-0.5 75/5 1


6.4 Feed Pump Air Switch () DZ47-63 50A 1


CJ20-40 1


Mutual Inductor () LMZ1-0.5 75/5 1


6.5 Coal Supply Air Switch () DZ47-63 15A 1



6.6 Knife Switch () XD12-400/31 2

7. Cabinet ()


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Instrument Cabinet ( ) KGF-331 1

Power Cabinet ( ) GGD 2

Stokehold Cabinet () 1

Photo of Electric Instrument Cabinet Photo of Power Cabinet

8 Spiral Coal Feeder

On bottom of Bunker there is a Spiral Coal Feeder (not including Coal-Supply System).Details are as follows:

Model LS-200Spiral Type

Motor Power 4 Kw

Rotate Speed 125-1250 r/min.

Photo ofSpiral Coal Feeder

9 List of Valve and InstrumentNo. Name Model/Specificatio Qty.

1 Plate-type Fluviograph PN4.0 DN25 1pc.2 Sluice Valve PN4.0 DN25 6pcs.

3 Sto Valve PN4.0 DN80 9 cs.4 Check Valve PN4.0 DN80 2pcs.5 Stop Valve PN4.0 DN25 2pcs.


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6 Throttle Valve PN4.0 DN25 2pcs.7 Sto Valve PN4.0 DN15 1 c.8 1.5 0-4.0 MPa 1 c.9 Three-wa Valve PN10 DN15 3 cs.10 Sto Valve PN4.0 DN20 2 cs.11 Spring Safety Valve PN4.0 DN40 1pc.

12 Electric Control Valve PN4.0 DN40 1 c.13 Stop Valve PN4.0 DN40 1pc.

14 Sluice Valve PN4.0 DN40 8pcs.

15 Rapid Blow-off Valve PN4.0 DN40 8pcs.

16 Two-Tone Fluviograph PN4.0 DN25 1pc.

17 Sluice Valve PN4.0 DN150 1pc.

18 1.5 Pressure Gage 1.5 Grade 0-4.0 MPa 2pcs.

19 Stop Valve PN4.0 DN15 3pcs.

20 Spring Safety Valve PN4.0 DN80 2pcs.

10~11 Heating Power Deaerator

Deaerator will make feeding water atomized and mixed with hot steam

so that the water heated up to saturation temperature and non-dissolved

oxygen and other non-condensing gases in the water are removed so the

feeding water reaches required standard.

Performance parameter of Deaerator: Nominal Output 15 t/h


Operating Temperature 104

Inflow Water Pressure 0.2 MPa

Inflow Water Temperature 30

Photo of Pump for Deaerator


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Drawing of Deaerator for referance


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12 Control System of Deaerator: Matching Deaerator13 Sampler: Please refer to the List foregoing14 Continuous Blowdown Expander

CBE will continuously discharge water with high concentrate of


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salinity nearby the water surface in steam pocket out of boiler which will

make content of salt, silicon and other grain slag in water not too high so

that boiler is not hurt. Amount of discharged high salinity water can be

adjusted according to analysis result of the water. Secondary steam from

CBE will return to Deaerator for recycle. Cooled sewerage will enter into

sewer through cooling well. Specification of CBE:

Model LP-1.5

Diameter 800 mm



Volume 1.5 M3

Drawing of Continuous Blowdown Expanderfor reference


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15 Regular Blowdown Expander

RBE will regularly discharge water in boiler from nadir of boiler

(normally nadir is nether water box of water cooled wall)which will

remove grain slag and other sediments.

Specification of RBE:

Model DP-3

Diameter 1200mm



Volume 3M3

Drawing of Regular Blowdown Expander for reference


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16 Sub-Cylinder: Please refer to the List foregoing17 Bag Filter17.1 Main Specification of Bag Filter

No. Item Units 15t/h CFB Boiler

1

Smoke Discharge amount of boiler

m3/h 45000

2 Qty. of Bag Filter set 1

3 Smoke Temperature 165

4 Discharged Dust Density of boiler g/Nm3 30

5 Dust Emission Index g/Nm3 50

17.2 Introduce of Bag Filter ( Omitted)

17.3 Main parameter of Bag Filter 1 Parameter


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1.1 Model PPC96-7

1.2

Filtered Smoke Amount

m3/h 45000

1.3 Inlet temperature 165

1.4

Inlet dust density

g/Nm

3

1.5

Exit dust density

mg/N

m3

30

1.6 Efficiency of

Collecting dust

% >99.9

1.7 Filtering Area M2 672

1.8

Air speed when filtering

m/mi

n

1.0~1.2

1.9

Running resistance

Pa 1500

1.10

Pressure on housing

Pa 6000

1.11

Used compressed air

m3/m

in

2.1

1.12

Normal working pressure

of

MPa 0.40.6

1.13 Ratio of air leak % 3

2 Constructionof the Bag Filter

2.1

Characteristic

Air-box type pulse blowing

2.2 Amount of box 7 boxes

2.2.1 Material Q235 steel

2.2.2 thickness mm 4 card 5 rib

2.2.3 Service time 30years

2.3 Dust hopper type cone hopper

2.3.1

Angle of cone hopper

60

2.3.2 Amount of cone pcs. 3

2.3.3 Material Q235 steel

2.3.4 thickness mm 4

2.3.5 Service time year 30

2.4

Structural support

2.4.1 Total height

of landing leg

M according to

Technological requirements


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2.4.2 Material of

landing leg

Q235 Joist steel

2.4.3 Auxiliary

supporting material

Q235 angle steel

2.5 Railing & Q235 steel

2.6 Thermal insulationmaterial

Rock wool + color

3

Electrical control

3.1

Instrument & meter

3.2

Overall dimension of

Control cabinet

mm LWH=2505001250

3.3 Control System Pulse controller & circuit of

secondary wire

3.4 Pulse Controller

3.4.1 Element S7200PLC

Programmable controller

3.4.2 DCS Port According to the

requirement of user

3.4.3 Soft ware T T-type drawing

3.4.4 Output point DC24V Passive

3.5 Circuit of

secondary wire

3.5.1 Element Relay

3.5.2 Output point According to the

requirement of user

3.5.3 Control mode

Concentrate-adjacency-

manual operation4 Main element4.1 Pulse valve

made in Shanghai

4.1.1 Model SCG353A060

4.1.2 Specification 2.5# Right angle

4.1.3 Number pc. 7

4.1.4 Service time 100

Blowing 1000000time

4.1.5 Device of

Blowing control

PLC PLC control


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4.2

Lift valve(cylinder)

made in Shanghai

4.2.1 Model SCD100250

4.2.2 Specification 100250mm

4.2.3 Number pc. 7

4.3 Filter-bag

4.3.1 Type of Filter bag Cylinder bag

4.3.2 Material of bag PPS FMS PPS or

4.3.3 Size of bag mm 1302480

4.3.4 Weight of bag g/ 540

4.3.5 Number of bag 672

4.3.6 Service time 2 normally 2 years

4.4 Cage

4.4.1 Material of cage Q195 Surface

treated by organosilicon

4.4.2 Type of cage Round

4.4.3 Size of cage mm 1202450

4.4.4 Number of Pcs. 672

17.4 Drawing of Bag Filter for referance


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18 Thionizer: Please refer to the List foregoing19 Fireproofing Material:

Please refer to other introduction20 Soot Blowing System: Please refer to the List foregoing