Method for removing sulfur dioxide, mercury, and nitrogen oxides from a gas stream
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United States of America Patent
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Apr 7, 2009
Grant Date -
Oct 26, 2006
app pub date -
Apr 21, 2005
filing date -
Apr 21, 2005
priority date (Note) -
Expired
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Abstract
Methods for scrubbing gas streams to remove acid gases including sulfur dioxide, mercury-containing substances, and/or nitrogen oxides from the gas stream. The gas stream is contacted with a potassium-based sorbent effective for removing at least a portion of the acid gases. The partially cleaned gas stream is then contacted with an oxidant effective to remove at least a portion of the nitrogen oxides and/or mercury-containing substances after partially removing the acid gas substance.
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