PROCESS FOR PRODUCING HYDROGEN FROM HYDROGEN-CONTAINING GAS

Abstract: processes for producing hydrogen from hydrogen-containing gas streams, such as coke oven gas (cog), steam cracker off gas, delayed coker off gas, and syngas from low-temperature gasification processes, are described. a hydrogen membrane separation unit separates a hydrogen-containing stream into a hydrogen-rich permeate stream and a hydrogen-lean residue stream. the hydrogen-lean residue stream is sent to a methane reforming zone for conversion of the methane and other light hydrocarbons to hydrogen. the hydrogen is then recovered in a hydrogen recovery zone. the hydrogen-containing stream can be pretreated to remove contaminants, if desired.

Inventor(s): Lubo ZHOU, Zhengjie YAO, Stephen CASKEY, Bradley RUSSELL

CPC Classification: C01B3/501 (NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS })

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