2175. ------. [MAYLAND, B. J.] (Phillips Petroleum Co.). Method for Gasifying Coals. United States Patent 2,659,668, Nov. 17, 1953; appl. filed Sept. 12, 1949, Serial No. 115,209; 4 claims (Cl. 48-206).

Claim 1. An improved method for gasifying organic material, which comprises the steps of heating solid heat-exchange material in a heating zone; gravitating said heated solid heat-exchange material into a coking zone; continuously tumbling said heated solid heat-exchange material in said coking zone while adding organic material thereto; decomposing said organic material to coke on the surface of said solid heat-exchange material; gravitating said coke-covered solid heat-exchange material into a gasification zone; passing steam and O₂ into contact with said coke-covered solid heat exchange material and gasifying said coked organic material; recovering resulting gaseous materials from said gasification zone; removing said solid heat-exchange material from said gasification zone; and returning said solid heat-exchange material to said heating zone.