Production of ultra-high purity oxygen from cryogenic air separa

Details Production of ultra-high purity oxygen from cryogenic air separa Production of ultra-high purity oxygen from cryogenic air separa

1995-08-29

1997-01-07

Kilner, Christopher

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62905, F25J 304

Patent

active

055905439

ABSTRACT:
The present invention relates to an improvement to cryogenic air separation processes which produce an ultra-high purity oxygen product and nitrogen and/or commercial purity oxygen products. In particular, the improvement of the present invention is characterized by removing a portion of liquid descending the distillation column system from the distillation section proximate to the location for withdrawing the oxygen-containing side-draw stream.

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