Dolores C Aquino

US Patent:

44327730, Feb 21, 1984

Filed:

Mar 21, 1983

Appl. No.:

6/475209

Inventors:

Charles A. Euker - Houston TX
Robert D. Wesselhoft - Baytown TX
John J. Dunkleman - Baytown TX
Dolores C. Aquino - Webster TX
Toby R. Gouker - LaPorte TX

International Classification:

C10J 354

US Classification:

48197R

Abstract:

Coal or similar carbonaceous solids impregnated with gasification catalyst constituents (16) are oxidized by contact with a gas containing between 2 volume percent and 21 volume percent oxygen at a temperature between 50. degree. C. and 250. degree. C. in an oxidation zone (24) and the resultant oxidized, catalyst impregnated solids are then gasified in a fluidized bed gasification zone (44) at an elevated pressure. The oxidation of the catalyst impregnated solids under these conditions insures that the bed density in the fluidized bed gasification zone will be relatively high even though the solids are gasified at elevated pressure and temperature.

US Patent:

46041052, Aug 5, 1986

Filed:

Jul 6, 1984

Appl. No.:

6/628079

Inventors:

Dolores C. Aquino - Houston TX
Philip L. DaPrato - Westfield NJ
Toby R. Gouker - Baton Rouge LA
Peter Knoer - Houston TX

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

C10J 354

US Classification:

48197R

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.