Gas: heating and illuminating – Processes – Fuel mixtures
Patent
1984-07-06
1986-08-05
Richman, Barry S.
Gas: heating and illuminating
Processes
Fuel mixtures
48202, 48210, C10J 354
Patent
active
046041052
ABSTRACT:
Coal or similar carbonaceous solids are extracted by contacting the solids in an extraction zone (12) with an aqueous solution having a pH above 12.0 at a temperature between 65.degree. C. and 110.degree. C. for a period of time sufficient to remove bitumens from the coal into said aqueous solution and the extracted solids are then gasified at an elevated pressure and temperature in a fluidized bed gasification zone (60) wherein the density of the fluidized bed is maintained at a value above 160 kg/m.sup.3. In a preferred embodiment of the invention, water is removed from the aqueous solution in order to redeposit the extracted bitumens onto the solids prior to the gasification step.
REFERENCES:
patent: 4052168 (1977-10-01), Koppelman
patent: 4084938 (1978-04-01), Willard, Sr.
patent: 4092125 (1978-05-01), Stambaugh et al.
patent: 4219338 (1980-08-01), Wolfs et al.
patent: 4234319 (1980-11-01), Beeson
patent: 4280817 (1981-07-01), Chauhan et al.
patent: 4284416 (1981-08-01), Nahas
patent: 4336034 (1982-06-01), Lang et al.
patent: 4432773 (1984-02-01), Euker, Jr. et al.
patent: 4459138 (1984-07-01), Soung
Chemistry of Coal Utilization, "The Plastic Properties of Coal", Loison et al., Supplementary Volume, p. 188, (1963).
Solvent Extract and the Plastic Properties of Coal, by E. D. Pierron et al, Division of the Illinois State Geological Survey Circular 288, 1960.
Aquino Dolores C.
DaPrato Philip L.
Gouker Toby R.
Knoer Peter
Daniel Anne Dickson
Hightower Judson R.
Richman Barry S.
The United States of America as represented by the United States
Woodard Joye L.
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