Control method to maximize argon recovery from cryogenic air...

Details Control method to maximize argon recovery from cryogenic air... Control method to maximize argon recovery from cryogenic air...

F - Mech Eng,Light,Heat,Weapons

25

J

162/104

F25J 3/04 (2006.01)

Patent

CA 1284096

ABSTRACT The present invention relates to an improvement to a conventional cryogenic air separation process having an argon sidearm column. The improvement to the process comprises reducing the pressure of the feed gas to the argon sidearm column across a control valve and operating the argon sidearm column at the lowest possible pressure consistent with a minimum temperature difference across the overhead condenser and the unrestricted return of crude oxygen vapor from the overhead condenser to the low pressure column.

597640

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