Process and apparatus for treating combustion exhaust gas

Details Process and apparatus for treating combustion exhaust gas Process and apparatus for treating combustion exhaust gas

2005-03-08

2005-03-08

Langel, Wayne A. (Department: 1754)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

C060S274000, C060S295000, C422S171000, C422S172000, C422S178000, C423S213200, C423S213500, C423S213700, C423S239100

Reexamination Certificate

active

06863874

ABSTRACT:
A system and method for the control of emissions from a diesel engine exhaust, comprises a catalyst (14) to convert NO to NO2, a filter (16) to trap soot and hold it for combustion with the NO2, 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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