Cryogenic rectification system for producing lower purity oxygen

Details Cryogenic rectification system for producing lower purity oxygen Cryogenic rectification system for producing lower purity oxygen

1996-12-12

1997-11-04

Capossela, Ronald C.

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62654, F25J 302

Patent

active

056827660

ABSTRACT:
A cryogenic rectification system having high recovery of both higher purity and lower purity oxygen which employs a side column having a bottom reboiler wherein feed air is partially condensed and the feed air vapor remaining after the partial condensation is turboexpanded prior to rectification.

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patent: 5349824 (1994-09-01), Ha et al.
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patent: 5463871 (1995-11-01), Cheung
patent: 5469710 (1995-11-01), Howard et al.
patent: 5490391 (1996-02-01), Hogg et al.
patent: 5546767 (1996-08-01), Dray et al.

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