Cryogenic air separation plant with reduced liquid drain loss
AssigneePraxair Technology, Inc.
InventorPaul Belanger
Life of this patent
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Abstract
A cryogenic air separation plant and method of operation wherein, after an interruption in operation, liquid from the sump of a lower pressure column and liquid from the sump of a higher pressure column is passed to a condenser, preferably an argon column top condenser, prior to the restarting of the plant.
Claims10
A cryogenic air separation plant comprising a lower pressure column, a higher pressure column, and at least one condenser, each of the lower pressure column and the higher pressure column having a sump located at the bottom thereof, means for passing liquid from the sump located at the bottom of the lower pressure column to said condenser, and means for passing liquid from the sump located at the bottom of the higher pressure column to said condenser.
A method for restarting a cryogenic air separation plant after an interruption in operation, said cryogenic air separation plant comprising a lower pressure column, a higher pressure column, and a condenser, each of the lower pressure column and the higher pressure column having a sump located at the bottom thereof, said method comprising passing liquid from the sump located at the bottom of the lower pressure column to the condenser, passing liquid from the sump located at the bottom of the higher pressure column to the condenser, and restarting the cryogenic air separation plant.
Dependencies are inferred from the claim text.