PROCESS AND FLUIDIZED BED GAS GENERATOR FOR ALLOTHERMIC GASIFICATION OF COAL

摘要

PCT No. PCT/EP87/00605 Sec. 371 Date May 19, 1989 Sec. 102(e) Date May 19, 1989 PCT Filed Oct. 15, 1987 PCT Pub. No. WO88/02769 PCT Pub. Date Apr. 21, 1988.A process is disclosed for allothermic gasification of coal under pressure with water vapor in a gas generator containing heat-exchange tubes for a heat transfer medium. The hot heat transfer medium that enters the gas generator by the heat-exchange tubes is first introduced in the gasification zone, then in the pyrolysis zone. The coal to be gasified flows counter-currently through the gas generator, so that the current of cooled heat transfer medium is used for heating and pyrolyzing the coal, whereas the heat for gasification is taken from the current of the still hot heat transfer medium. Gas generators vertically or horizontally arranged with fitting designs are used for implementation of the process.