Process for recovering olefins

Details Process for recovering olefins Process for recovering olefins

1998-12-09

2000-11-07

Capossela, Ronald

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62908, 62932, 62935, 95 55, F25B 100

Patent

active

061419885

ABSTRACT:
A process for recovering olefins from a gas stream containing olefins and hydrogen. The process comprises compressing the gas stream in at least one compression stage to form a compressed gas stream, contacting the compressed gas stream with a membrane at conditions effective to obtain a permeate stream rich in hydrogen and a retentate stream depleted in hydrogen, and introducing the permeate stream into a pressure swing adsorption system at conditions effective to obtain a nonadsorbed stream rich in hydrogen and a desorbed stream comprising olefins.

REFERENCES:
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patent: 4761167 (1988-08-01), Engler
patent: 5082481 (1992-01-01), Barchas et al.
patent: 5085774 (1992-02-01), Ekiner et al.
patent: 5332424 (1994-07-01), Rao et al.
patent: 5452581 (1995-09-01), Dinh et al.
patent: 5634354 (1997-06-01), Howard et al.

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