Cryogenic rectification system for producing low purity oxygen a

Details Cryogenic rectification system for producing low purity oxygen a Cryogenic rectification system for producing low purity oxygen a

1998-09-08

1999-06-29

Capossela, Ronald

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62654, F25J 300

Patent

active

059162627

ABSTRACT:
A cryogenic rectification system wherein low purity oxygen is recovered from a side column or the lower pressure column of a double column while a portion of the low purity oxygen is fed to an auxiliary column driven by fluid having a high nitrogen concentration wherein high purity oxygen is produced.

REFERENCES:
patent: 4704147 (1987-11-01), Kleinberg
patent: 5315833 (1994-05-01), Ha et al.
patent: 5463871 (1995-11-01), Cheung
patent: 5546767 (1996-08-01), Dray et al.
patent: 5628207 (1997-05-01), Howard et al.
patent: 5678427 (1997-10-01), Bonaquist et al.
patent: 5682766 (1997-11-01), Bonaquist et al.

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