Methods for purifying inert gas streams

Details Methods for purifying inert gas streams Methods for purifying inert gas streams

1985-03-28

1986-04-01

Shine, W. J.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Molecular oxygen or ozone component

423230, 423247, 423248, C01B 1300, C01B 126, C01B 3118, C01B 3120

Patent

active

045797234

ABSTRACT:
An inert gas stream containing parts per million levels of impurities such as O.sub.2, CO, CO.sub.2, H.sub.2, H.sub.2 O, is purified by passing the same sequentially through a first bed and second bed of material. In the first bed, carbon monoxide and hydrogen are both reacted with oxygen to form CO.sub.2 and H.sub.2 O. The latter is retained in this first bed while the reaction products and the inert gas stream are supplied to a second of material which is comprised of a getter. In this bed, oxygen reacts with the getter material and carbon dioxide is adsorbed therein so that the inert gas stream leaving the second bed is substantially free of such impurities. The first and second beds of material operate at temperatures up to about 38.degree. and these materials may be regenerated by heating the same to approximately 200.degree. C. and purging such beds with a purge gas flow.

REFERENCES:
patent: 3061403 (1962-10-01), Rendos
patent: 3535074 (1970-10-01), Nakashima
patent: 3885927 (1975-05-01), Sherman et al.
patent: 4353716 (1982-10-01), Rohde
patent: 4459270 (1984-07-01), Leppard et al.

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