Krypton and xenon recovery system

Details Krypton and xenon recovery system Krypton and xenon recovery system

2005-01-18

2005-01-18

Nguyen, Ngoc-Yen (Department: 1754)

Chemistry of inorganic compounds

Inert or noble gas or compound thereof

C423S245100, C423S245300, C204S158200, C204S157300

Reexamination Certificate

active

06843973

ABSTRACT:
In a process for the recovery of krypton and xenon, an oxygen-enriched stream containing krypton and/or xenon and hydrocarbons is removed from an air separation unit. A substantial portion of the hydrocarbons, especially methane, ethane, and acetylene, is removed from the oxygen-enriched stream prior to the distillation process. The hydrocarbon removal process includes, but is not restricted to, the hydrocarbons reacting with a portion of the oxygen present in the feed gas. The krypton and xenon are eventually recovered from the oxygen stream through a distillation process. The distillation process is performed in such a manner that at least a stream further enriched in both krypton and xenon is produced.

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Larkin et al., “Production of Organic Oxygenates in the Partial Oxidation of Methane in a Silent Electric Discharge Reactor”,American Chemical Society(2000).

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