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Title:
KRYPTON XENON RECOVERY FROM PIPELINE OXYGEN
Document Type and Number:
WIPO Patent Application WO/2011/068634
Kind Code:
A3
Abstract:
A method and apparatus for producing a krypton- xenon-rich stream in which a pipeline oxygen stream is removed from an oxygen pipeline at ambient temperature and then distilled in a cryogenic rectification plant to produce the krypton-xenon-rich stream from a column bottoms of a distillation column. The plant can generate its own refrigeration by way of a heat pump loop incorporating an expander or, alternatively, refrigeration can be added by means of a liquid oxygen reflux stream introduced into the top of such distillation column.

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Inventors:
PARSNIK DAVID ROSS (US)
PROSSER NEIL MARK (US)
IHEJIRIKA IHUAKU (US)
Application Number:
PCT/US2010/055784
Publication Date:
June 11, 2015
Filing Date:
November 08, 2010
Export Citation:
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Assignee:
PRAXAIR TECHNOLOGY INC (US)
PARSNIK DAVID ROSS (US)
PROSSER NEIL MARK (US)
IHEJIRIKA IHUAKU (US)
International Classes:
F25J3/04
Foreign References:
US6694775B12004-02-24
US4384876A1983-05-24
US20090188278A12009-07-30
US6327873B12001-12-11
US6314757B12001-11-13
Attorney, Agent or Firm:
ROSENBLUM, David, M. et al. (INC.39 Old Ridgebury Roa, Danbury CT, US)
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