03 Gaseous fuels (derived gaseous fuels)

95105858 Turkmenistan turning point Esau, I. Offshore Engineer, Sep. 1995, 38-40. The author reports that a recently completed deal could breathe new life into two aging fields in the eastern Caspian and also act as the stimulus needed to ex loit Turkmenistan’s huge recoverable reserves - eight billion

.P barrels of ot and 94 trillion cubic feet of gas.

95105859 World gas yearbook 1995 The Petroleum Economist Ltd., PO Box 105, 25131 Ironmmonger Row,

London ECIV 3PN, f60.00, 1995. /

Coal gaslflcation pllot plant overall results

Kida, E. et al., Sekitan Riyo Gijutsu Kaigi Koenshu, 1994, (4), 233-241. (In Japanese) Describes how coal was gasified in a l-chamber 2-stage circulating, spouted tluidized bed furnace with the furnace having high reliability and stable operation with low-emission. The furnace will contribute to H manu- facture, fuel gas, coal-gasification cogeneration, etc.

95105889 comaodtlon

Coal gaslfler for producing gases wlth stablo

95105880 Worldwide refining and gas processing directory 1995 - 51 st edltion PennWell Books, PO Box 21288, Tulsa, OK.74121, USA, 1995, 251 pp.

Provides a listing of companies’ actiye in crude oil and natural gas process- ing, and the engineering/construction service firms.

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Ueda, A.-~-et al., (Assigned to) Babcock Hitachi KK, JAP. Pat. JP.O7,18,266, Jan. 1995.

95105870 Coal gaslfier wlth heat recovery section Ueda, A. et al., (Assigned to) Babcock Hitachi KK, JAP. Pat. JP.O7,18,268. Jan. 1995. 7 The nasifier includes a heat-recoverv section and a recoverv chamber or

Derived Gaseous Fuels boile; for multi-stage supplying slag to remove unburned components deposited on the surfaces of the heat-exchange section, and then applying vibration on the heat-exchange section. _

__. -

95105881 Adsordlon-desorDtlon and hvdroaenatlon of CO on supported Fe&O), complexes and dlspers<d Fe catalysts Xu, H. et al., Fenzi Cuihua, 1995, 9? (2), 81-89. (In Chinese) Discusses a study of the decarbonylatton of Fer(CO)s complex supported on Al,O, or ZrO,, and the adsorption-n-deso

rp tron and the surface reaction

of CO on the dispersed Fe catalysts derived rom the supported complexes by IR and temperature-programmed techniques.

95iO5871 Coal-bed methane In Ukralne: Facts and prospects Karp, I. N. et al., Ekotekhnol. Resursosberezhenie, 1994, (I), 3-11. (In Russian) Discusses the present state and future prospects, including estimated eco- nomics, for coal-bed methane reserves and utilization in Ukraine. Methane in the Donetz and Lvov-Volny coal basins is only extracted as a byproduct of coal mining.

95105882 Advances In the Shell Coal Gaslflcatlon Process Doering, E. L. and Cremer, G. A. Prepr. Pap.-Am. Chem. Sot., Div. Fuel Chem., 1995, 40, (2), 312-317. Describes the technological development of the Shell Coal Gasification Process.

95105872 Coalbed methane recovery using membrane sepa- ration of oxygen from alr Puri, R. and Yee, D. (Assigned to) Amoco Corp., US Pat. US.5,388,642, Feb. 1995.

95105883 Apparatus for coal gaslflcatlon with monltorlng Describes a process for recovering methane from a solid carbonaceous

means subterranean formation having a production well in fluid communication

Ueda, A. et al., -(Assigned to) Babcock Hitachi KK, JAP. Pat. with the formation and an injection well in fluid communication with the formation.

JP.07.11.261. Jan. 1995. The apparatus consists of a gasification section, a slag cooling section adjacent to underneath the gasification section, and means for monitoring slag dropping in the cooling section, and monitoring the combustion in the burner, and supplying gases containing oxidizing agents to the cooling section as purge gas.

95105884 Ap stable dlscharg ng slag P

aratus for gasification of pulverized coal with

Ueda, A. et al., (Assigned to) Babcock Hitachi Kl’c JAP. Pat. JP. 07,11,262, Jan. 1995. - The apparatus contains a slag cooling section connected to a slag lock hopper with a pipe, a noule for injecting purge gas containing 0, to the pipe for preventing formation of a slag bridge in the pipe.

95105873 Cross flow char fuel gas producers Firey, J. C. US Pat. 5,389,117, Feb. 1995. Describes a process where reacted gas manifolds and reactant gas manifolds are added to the char fuel reaction chamber of a char fuel gas producer to create a flow of gas across the direction of motion of the solid char fuel. The char fuel volatile matter is then mixed with air and the mixture separated from the producer gas created in the high temperature rapid reaction zone.

95105874 Development of methods of gas ressrve sstlmatlon In coals taking Into account Ukrainian and nonUkraInian experience Golubev, A. A. Ekotekhnol. Resursosberezhenie. 1994, (1). 33-44. (In

95105885 Catalytic actlvl ‘y

of alkali and transition metal salt mixtures for steam-char gas fication Lee, W. J. and Kim? S. D. Fuel, Sep. 1995, 74, (9), 1387-1393. The catalytic activittes of pure and mixed catalysts of alkali and transition metal salts in steam-char gasification at 700-85O’C were measured with a thermobalance. The effects of catalyst loading (O-35 wt%) and composi- tion, coal rank and steam partial pressure were determined. The initial rate increases with increasing steam artial pressure in non-catalytic gasifica- tion but is almost independent o P, it in catalytic gasification.

Russian) . ,-

Recent domestic and foreign experience of CH, recovery from coal has classified that hydrocarbon gases in coal mines are not only accompanying but are also autonomous useful reserves, which overall forces a revision in current knowledge and resource estimation. Taking into account the speci- ficity of coal-bearing deposits, it was possible to identify three sources of hydrocarbon gases in coal seams. The first source is coal-beds of the sur- veyed regions outside the mine fields, in which hydrocarbon gases are mainly sorbed and their extraction as an independent useful reserve is realized bv means of surface wells. The second source is rocks of the roof and soil of the working beds together with gas discharged from internal pressure in the mines. The third source is small gas deposits, accumula- tions, and traps of free gas.

95105875 Distrlbutlon characteristics and resources of meth- an8 In coal-bearing formations of the Lvov-Volyn Basin Zabigailo, V. E. et al., Ekotekhnol. Resursosberezhenie, 1994, (1) 69-74. (In Russian) Because of a lack of conventional natural gas reserves in the Ukraine, it is economically expedient to use CH, from simultaneous degassing of coal seams in mines of the Lvov-Volyn basin. The Chernonograd and Velykomost coal regions are the most promising for CH, recovery.

95105888 Catalytic B

aslflcatlon of Pittsburgh coal char by potassium sulfate and errous sulfate mlxtures qp8;tlu, J. F. and Akyurtlu, A. Fuel Process. Technol., 1995, 43, (l),

- . The main objective of this study is to evaluate the catalytic activity of K,SO,-FeSO, mixtures in the steam gasification of Pittsburgh coal char and to compare it with that of K,CO . A catalyst composition correspond- ing to an atmospheric K!Fe ratio of b gave the highest conversion for the gasification of Pittsburgh coal char with H,O/H, and H,O/N, mixtures, the conversion being higher than that with K,CO, in the case of H,O/N, gasifi- cation. This behaviour is attributed to the catalysis of the reduction of KaSO, by iron.

95105887 Coal flash hydropyrolysls. Catalytic effect of met- 95105878 als loaded bv Ion-exchanas method on ovrolvsls and char

Effect of preswelllng on soxhlet and supercrltlcal aas extractlon of a Turkish llanlte

gasification - .- .

Matsui, H. et al., Nippon Enerugi Gakkaishi, 1995, 74, (3), 170-172. (In Simsek, E. I-L et al., Fuel Sci. Tzchnol. Int., 1995, 13, (5), 569-577. The paper discusses how meswelling of Mugla-Yatanan lignite with THF

Japanese) The effects of Ni and Fe ions, which are loaded to Lay Yang brown coal by ion-exchange, on flash hydropyrolysis were investigaed on a bench- scale apparatus. The steam gasification reactivity of the semicokes pre- pared from flash hydropyrolysis of the coals were also investigated using a thermobalance.

followed by the removal of the swelihrg agents resulti in hrgher extraction yields, probably because the solvent molecules had easier access to the expanded pore structure of the swollen lignite. On the other hand, the extraction yields with supercritical THF from the same lignite sample indi- cated that during removal of the swelling agent, the expanded pore struc- ture had collapsed.

418 Fuel and Energy Abstracts November 1995