Process and apparatus for treating combustion exhaust gas
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United States of America Patent
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Mar 8, 2005
Grant Date -
N/A
app pub date -
Jul 12, 2001
filing date -
Oct 12, 1998
priority date (Note) -
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Abstract
A system and method for the control of emissions from a diesel engine exhaust, comprises a catalyst (14) to convert NO to NO.sub.2, a filter (16) to trap soot and hold it for combustion with the NO.sub.2, and a NOx absorber (28), with means to regenerate the NOx absorber by injecting reductant or other reactant (injector 18) upstream of the absorber, and at least during regeneration, passing the exhaust gases leaving the absorber through a three-way catalyst (30).
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