Refrigeration – Processes – Circulating external gas
Patent
1985-08-23
1987-03-31
Schor, Kenneth M.
Refrigeration
Processes
Circulating external gas
62 24, 62 27, 55 16, 423248, F25J 308, B01D 5322
Patent
active
046540474
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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DiMartino Stephen P.
Hopkins Jeffrey A.
Nicholas David M.
Air Products and Chemicals Inc.
Anderson Andrew J.
Innis E. Eugene
Rodgers Mark L.
Schor Kenneth M.
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