Low-temperature separation of air using high and low pressure ai

Details Low-temperature separation of air using high and low pressure ai Low-temperature separation of air using high and low pressure ai

1989-05-19

1990-10-23

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 23, 62 43, F25J 500

Patent

active

049649019

ABSTRACT:
In the separation of air by a two-stage rectification column, part of the air feedstream is compressed to only the pressure of the low pressure stage and, after prepurification in a molecular sieve and cooling, is fed directly into the low pressure stage.

REFERENCES:
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patent: 2873583 (1959-02-01), Potts et al.
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patent: 3500651 (1970-03-01), Becker
patent: 3699695 (1972-10-01), Becker
patent: 3760596 (1973-09-01), Basin et al.
patent: 4704147 (1987-11-01), Kleinberg
patent: 4731102 (1988-03-01), Yoshino

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