System and process for treating contaminated fluid system
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United States of America Patent
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Issued Date -
May 5, 2005
app pub date -
Feb 9, 2004
filing date -
Nov 5, 2003
priority date (Note) -
Abandoned
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Abstract
A system for treating a fluid stream containing contaminants is described. The system is comprised of a catalyst having a first flow path and a second flow path and an adsorbent bed positioned downstream from the catalyst. A flow diversion member is positioned to direct at least a portion of the fluid stream to or away from said adsorbent bed as the stream exits the catalyst. The stream is passed over said adsorbent bed until a predetermined operating parameter is reached, whereupon the position of the flow diversion member is moved to divert at least a portion of the stream away from the adsorbent bed and into the second flow path of the catalyst. A process for treating an exhaust fluid stream using the system is also described. The system and process find particular use in treating exhaust gas after cold-start, after restart, and during continuous operation of an engine.
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