Process for purification of argon from oxygen

Details Process for purification of argon from oxygen Process for purification of argon from oxygen

1974-12-12

1976-12-07

Granger, Theodore A.

Gas separation

Means within gas stream for conducting concentrate to collector

55 66, B01D 5304

Patent

active

039960285

ABSTRACT:
A process for purification of argon from oxygen comprises the step of absorption of oxygen by passing argon through synthetic zeolites of the A type with a diameter of the entry voids from 2.8 to 4.2A. Oxygen is adsorbed under a pressure of argon of 21.38-427 p.s.i.a. Then oxygen is desorbed from zeolites by reducing the pressure from 21.38-427 p.s.i.a. to atmospheric pressure with subsequent vacuum treatment of the zeolites at a pressure of 1-10.sup.-.sup.2 mm Hg. The steps of adsorption, desorption and vacuum treatment are carried out under thermostatic treatment of zeolites with a refrigerant so that a temperature of zeolites at the adsorption stage is maintained at -186.degree. C to -133.degree. C.

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