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

1996-06-27

1997-10-21

Kilner, Christopher

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62654, F25J 304

Patent

active

056784279

ABSTRACT:
A double column cryogenic rectification system for producing low purity oxygen and high purity nitrogen, preferably at elevated pressure, wherein nitrogen-rich vapor from the higher pressure column is turboexpanded and condensed against lower pressure column intermediate liquid prior to being passed into the lower pressure column.

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