Method of purifying crude argon

Details Method of purifying crude argon Method of purifying crude argon

1979-05-30

1980-12-16

Spitzer, Robert H.

Gas separation

Means within gas stream for conducting concentrate to collector

55 75, B01D 5304

Patent

active

042395097

ABSTRACT:
A method for purifying crude argon containing argon, oxygen and nitrogen comprises the steps of reducing the amount of nitrogen in the crude argon to between a trace and 0.15% (by volume) and passing the remaining oxygen and argon, together with residual nitrogen, through 4A molecular sieve to separate the oxygen and argon. The 4A molecular sieve is particularly effective if steps are taken to ensure that all the remaining oxygen and nitrogen has to pass through a volume of 4A molecular sieve which is wholly at or below -250.degree. F.

REFERENCES:
patent: 2810454 (1957-10-01), Jones et al.
patent: 2893512 (1959-07-01), Armond
patent: 3023841 (1962-03-01), Milton et al.
patent: 3103425 (1963-09-01), Meyer
patent: 3923477 (1975-12-01), Armond et al.
patent: 3928004 (1975-12-01), Bligh et al.
patent: 3996028 (1976-12-01), Golovko et al.

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