Hybrid membrane/cryogenic process for hydrogen purification

Details Hybrid membrane/cryogenic process for hydrogen purification Hybrid membrane/cryogenic process for hydrogen purification

F - Mech Eng,Light,Heat,Weapons

25

J

162/110

F25J 3/08 (2006.01) B01D 53/22 (2006.01) C01B 3/50 (2006.01) F25J 3/02 (2006.01)

Patent

CA 1272119

ABSTRACT The present invention involves a process for recovering hydrogen from a feed gas mixture comprising hydrogen and at least one other component. The feed gas mixture is initially separated in a membrane separation unit to produce a hydrogen-rich stream and a hydrogen-lean stream. The hydrogen-lean stream is subsequently treated in a cryogenic separation unit to remove a portion of the non-hydrogen components and produce a hydrogen-enriched stream. The hydrogen-enriched stream from the cryogenic separation unit is recycled and combined with the feed gas mixture to the membrane separation unit.

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