Hydrogen recovery process

Details Hydrogen recovery process Hydrogen recovery process

1999-05-21

2000-12-12

Spitzer, Robert H.

Gas separation: processes

Compressing and indirect cooling of gaseous fluid mixture to...

95 50, 95 96, B01D 5322, B01D 5304

Patent

active

061592722

ABSTRACT:
A treatment process for a hydrogen-containing off-gas stream from a refinery, petrochemical plant or the like. The process includes three separation steps: condensation, membrane separation and hydrocarbon fraction separation. The membrane separation step is characterized in that it is carried out under conditions at which the membrane exhibits a selectivity in favor of methane over hydrogen of at least about 2.5.

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