Process for the purification of non-reacting gases

Details Process for the purification of non-reacting gases Process for the purification of non-reacting gases

1982-01-13

1983-09-27

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423232, 423233, 423234, B01D 5334

Patent

active

044068670

ABSTRACT:
Regenerative process for the purification of a non-reacting industrial gas stream by removal of trace amounts of carbon dioxide therefrom, comprising contacting said gas stream with non-aqueous liquid solution of at least one member selected from the group consisting of: (a) hydroxides and weak acid salts of sodium, potassium, and lithium and (b) specific liquid aliphatic polyhydric alcohol; separating the purified industrial gas from the reaction products of said contacting step including said solution; increasing said reaction products stream to an elevated temperature up to 200.degree. C.; reducing the partial pressure of carbon dioxide in the vapor phase above said reaction product stream; separating carbon dioxide from said reaction product stream; and recycling the treated reaction product stream to said liquid body of said solution for contacting a further quantity of said industrial gas stream.

REFERENCES:
patent: 2177068 (1939-10-01), Hutchinson
patent: 2185332 (1940-01-01), Crampton
patent: 2742517 (1956-04-01), Fusco
patent: 2886405 (1959-05-01), Benson et al.
patent: 4313916 (1982-02-01), Jones et al.

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