Cryogenic gas separation with liquid exchanging columns

Details Cryogenic gas separation with liquid exchanging columns Cryogenic gas separation with liquid exchanging columns

1982-09-29

1984-08-07

Seyer, Frank

Refrigeration

Processes

Circulating external gas

62 34, 62 39, 62 42, F25J 302

Patent

active

044641915

ABSTRACT:
An arrangement of distillation columns is disclosed for subambient distillative separation of 2 mixture of non-condensable gases wherein two columns which exchange liquid achieve a given level of separation over a smaller temperature range than that required by a single column producing the same separation. The arrangement is useful for air separation to produce medium purity (90 to 99%) O.sub.2 and/or N.sub.2.

REFERENCES:
patent: 2699046 (1955-01-01), Etienne

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