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

1997-10-15

1998-09-15

Capossela, Ronald C.

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62651, F25J 302

Patent

active

058063420

ABSTRACT:
A cryogenic rectification system for producing low purity oxygen and high purity oxygen employing an offset dual column with bottom reboil of the lower pressure column effected by condensing feed air, with intermediate reboil of the lower pressure column effected by condensing higher pressure column top vapor, and with waste nitrogen turboexpansion to generate refrigeration.

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