초록 ▼

Krypton present in a trace amount in a gaseous oxygen/nitrogen mixture is effectively enriched by an adsorption/desorption process of the pressure variation mode using a system including at least three fixed bed adsorption columns packed with hydrogenated mordenite. At the end of adsorption operatio

Krypton present in a trace amount in a gaseous oxygen/nitrogen mixture is effectively enriched by an adsorption/desorption process of the pressure variation mode using a system including at least three fixed bed adsorption columns packed with hydrogenated mordenite. At the end of adsorption operation in one column, a desorbed gas from another column is fed to the one column under substantially the same pressure as the pressure during adsorption operation for fully washing the one column. Thereafter, the one column is subject to desorption operation.

대표청구항 ▼

[ We claim:] [1.] A method for enriching krypton in a gaseous oxygen/nitrogen mixture by an adsorption/desorption process of the pressure variation mode using a system including at least three fixed bed adsorption columns packed with hydrogenated mordenite, the method comprising the steps of:at the

[ We claim:] [1.] A method for enriching krypton in a gaseous oxygen/nitrogen mixture by an adsorption/desorption process of the pressure variation mode using a system including at least three fixed bed adsorption columns packed with hydrogenated mordenite, the method comprising the steps of:at the end of adsorption operation in one column, feeding a desorbed gas from another column to said one column under substantially the same pressure as the pressure during adsorption operation for fully washing said one column, andthereafter, subjecting said one column to desorption operation, and wherein the adsorption operation is not accompanied by means for cooling and the desorption operation is not accompanied by means for heating.