Method of purifying crude argon

Details Method of purifying crude argon Method of purifying crude argon

C - Chemistry, Metallurgy

01

B

162/104

C01B 23/00 (2006.01) B01D 53/04 (2006.01)

Patent

CA 1119108

211-P-CA-02387 US 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°F.

328827

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