Internal combustion engine with SCR and integrated ammonia production
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United States of America Patent
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May 25, 2004
Grant Date -
May 13, 2004
app pub date -
Nov 13, 2002
filing date -
Nov 13, 2002
priority date (Note) -
Expired
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Abstract
NO.sub.x emissions from an internal combustion engine fueled by a gaseous hydrocarbon fuel can be reduced by catalytically producing a hydrogen and carbon monoxide fuel gas stream from the gaseous hydrocarbon fuel and a portion of the hot exhaust gas from the internal combustion engine. Furthermore, ammonia is also produced catalytically by reacting a portion of the hydrogen produced with ambient nitrogen present in the exhaust gas. The ammonia produced is used in connection with a selective catalytic reduction reactor to treat the remaining hot exhaust gas produced from the internal combustion engine, resulting in a treated exhaust gas stream having near-zero NO.sub.x emissions.
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