Helium recovery
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United States of America Patent
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Nov 13, 2007
Grant Date -
Dec 2, 2004
app pub date -
Jul 31, 2002
filing date -
Jul 31, 2001
priority date (Note) -
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Abstract
A gas recovery system comprising a source of gas having a preselected concentration of a desired component (9), at least one application (1) that adds impurities to said gas, and at least one an adsorption system (6) that purifies said gas to produce a purified gas for re-use in application (1), wherein said at least one adsorption system includes at least one adsorbent bed (A) having at least three layers of adsorbents. A recovery process is also disclosed.
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