Process for treating a gas stream
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United States of America Patent
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Aug 18, 2009
Grant Date -
Sep 4, 2008
app pub date -
May 5, 2008
filing date -
May 17, 2006
priority date (Note) -
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Abstract
Processes for selectively removing sulfur-containing compounds from a gas are described herein. The processes generally include contacting a first gas including carbon dioxide and hydrogen sulfide with a scrub solution including ammonium bisulfite and ammonium sulfite in a first contact zone to produce a first contact zone effluent liquid including ammonium thiosulfate and a first contact zone overhead gas in which the concentration of hydrogen sulfide is substantially reduced.
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