Process for purifying argon gas and apparatus used therefor

Details Process for purifying argon gas and apparatus used therefor Process for purifying argon gas and apparatus used therefor

1987-02-05

1989-03-28

Shine, W. J.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

4232451, 423247, 423248, 423219, 423235, 423262, 55 26, 55 66, 55 35, 55 75, B01D 5304, C01C 304, C01B 1300

Patent

active

048162370

ABSTRACT:
Highly pure argon is obtained from an argon waste gas composition by adding a stoichiometrically excess amount of oxygen to the waste gas composition to combust hydrogen and the like impurities and to convert into water and carbon dioxide, adding a stoichiometrically excess amount of a hydrocarbon gas to the resulting gas composition to remove the residual oxygen by the reaction with the oxygen and the hydrocarbon gas so as to convert into water and carbon dioxide, and subjecting the resulting gas composition to a pressure swing adsorption-desorption treatment to remove the impurities.

REFERENCES:
patent: 3535074 (1970-10-01), Nakashima
patent: 3715572 (1973-02-01), Gramont et al.
patent: 3878289 (1975-04-01), Beavon
patent: 3928004 (1975-12-01), Bligh et al.
patent: 4257885 (1981-03-01), Grose et al.
patent: 4505880 (1985-03-01), Deschamps et al.
patent: 4515605 (1985-05-01), Inoue et al.

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