972. ------. [HEMMINGER, C. E.] (Standard Oil Development Co.). Gasification. United States Patent 2,644,745, July 7, 1953. Chem. Abs., vol. 47, 1953, p. 8996.

Patent Abstracts

Finely divided carbonaceous solids are gasified continuously while suspended in the gaseous gasifying medium, such as steam or CO₂, at temperatures above the fusion point of the ash. The heat required to support the endothermic gasification reaction and to maintain the high reaction temperatures is generated by partial combustion of the carbonaceous charge with free O₂. Gasification temperatures of preferably 1,149º-1,371º and pressures ranging from atmospheric to about 400 p. s. i. are suitable for the gasification of most carbonaceous solids, such as coals, shale, and coke. The particle size of the solids is preferably 20 to 100-mesh. The suspension of the solids in the gas mixture containing O₂ and steam or CO₂ is admitted in suitable proportions at a relatively high velocity tangentially into the gasifier so as to impart a swirling motion to the suspension.