Air fractionation method

Details Air fractionation method Air fractionation method

1983-06-02

1985-03-26

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 31, 62 33, 62 34, 62 43, F25J 304

Patent

active

045071349

ABSTRACT:
A method of fractionation of air which includes the steps of feeding material air compressed by a withdrawing liquefied oxygen from the bottom of a crude argon column, pressurized under its own weight, and gasifying the liquefied oxygen by a reversible heat exchanger to provide an oxygen product while withdrawing an argon-rich gas at the top of the crude argon column by means of a blower so as to maintain the internal pressure of the crude argon column at a reduced pressure.

REFERENCES:
patent: 2666303 (1954-01-01), Schuftan

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