Method and apparatus for recovering xenon or a mixture of krypto

Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture

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62925, F25J 100

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active

061640891

ABSTRACT:
Method and apparatus for recovering xenon or a mixture of xenon and krypton from air processed in a cryogenic air separation plant. An oxygen rich stream containing xenon and or krypton and xenon together with other trace impurities is subjected to a carbon dioxide and nitrous oxide removal step followed by concentration of xenon and or a mixture of krypton and xenon in a liquid fraction separated from an oxygen enriched vapor and vaporizing and recovering a xenon and or krypton and xenon mixture enriched vapor.

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