Condenser-reboiler system and method

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United States of America Patent

PATENT NO 10012439
SERIAL NO

15285557

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Abstract

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A system and method for the concurrent condensation of a nitrogen-rich vapor and vaporization of an oxygen-rich liquid in a distillation column based air separation unit is provided. The disclosed system includes a condenser-reboiler heat exchanger located between a lower pressure column and a higher pressure column and configured to condense a nitrogen-rich vapor from the higher pressure column and partially vaporize an oxygen-rich liquid from the lower pressure column. Within the condenser-reboiler heat exchanger, the nitrogen-rich vapor flows in an upward direction such that any non-condensables present in the nitrogen-rich vapor will accumulate proximate the upper portion or top of the condenser-reboiler modules where they can be easily removed through venting.

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Patent Owner(s)

Patent OwnerAddress
PRAXAIR TECHNOLOGY INC10 RIVERVIEW DR DANBURY CT 06810

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chakravarthy, Vijayaraghavan S Williamsville, US 11 10
Kwark, Sang Muk Williamsville, US 8 28
Shelat, Maulik R Williamsville, US 36 67

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