AN INTEGRATED COAL LIQUEFACTION PROCESS

摘要

An integrated coal liquefaction process includes a coal gasification step (201), a Fischer-Tropsch synthesis step (203), a coal carbonylation step (207) and a coal direct liquefaction step (209), wherein the carbon monoxide consumption during water gas shift conversion reaction in the Fischer-Tropsch synthesis step (203) is less than 5%. The carbon monoxide in the synthesis gas produced from the coal gasification step (201) or t he carbon monoxide in the tail gas produced from the synthesis gas converting step (203) are used in the coal carbonylation step (207). The pretreated coal from the coal carbonylation step (207) is subjected to hydrogenation liquefaction in the coal direct liquefaction step (209). Applying recovered carbon monoxide to carbonylation reaction of feed coal can reduce the carbon dioxide emission of the liquefaction process, and simultaneously increase the utilization rate of carbon.