Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture
Reexamination Certificate
2006-03-10
2009-02-10
Doerrler, William C (Department: 3744)
Refrigeration
Cryogenic treatment of gas or gas mixture
Separation of gas mixture
C062S643000
Reexamination Certificate
active
07487648
ABSTRACT:
A method for the cryogenic separation of air having defined temperatures for condensed feed air passed into a double column system relative to liquid oxygen and preferably to shelf vapor, and wherein kettle liquid is not subcooled from the higher pressure column to the lower pressure column.
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Ahmed M. Mushtaq
Prosser Neil Mark
Skare Todd Alan
Weber Joseph Alfred
Doerrler William C
Praxair Technology Inc.
Rosenblum David M.
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