Method and system for reducing ammonia slip after selective reduction of NOx
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United States of America Patent
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Aug 24, 2010
Grant Date -
Apr 17, 2008
app pub date -
Sep 6, 2005
filing date -
Sep 6, 2005
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Abstract
A process is described that removes by chemical oxidation the excess ammonia (NH.sub.3) gas from flue gases that have been subjected to selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR) of oxides of nitrogen (NO.sub.x) by ammonia injection. Methods for the removal of residual ammonia from flue gases prior to fouling air pre-heaters or deposition on fly ash are discussed.
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