Method and apparatus for a non-catalytic NOx reduction

Details Method and apparatus for a non-catalytic NOx reduction Method and apparatus for a non-catalytic NOx reduction

2011-01-25

2011-01-25

Denion, Thomas E (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S274000, C060S295000, C060S300000, C060S301000, C060S303000

Reexamination Certificate

active

07874147

ABSTRACT:
A method of reducing NOx in exhaust gases generated by an internal combustion engine includes advancing the exhaust gases along an exhaust path to a selective catalytic reduction (SCR) catalyst positioned downstream from the internal combustion engine. The method further includes activating a heat source if the exhaust gases are below a predetermined temperature, such that the exhaust gases along a segment of the exhaust path are heated to a temperature of 700-1000° C. The method further includes injecting a reductant into the segment of the exhaust path upstream of the SCR catalyst to react in the segment with NOx in the exhaust gases. The method further includes deactivating the heat source if the temperature of the exhaust gases at the catalyst rises above the first predetermined temperature. An emission abatement assembly is also disclosed.

REFERENCES:
patent: 5406790 (1995-04-01), Hirota et al.
patent: 6357226 (2002-03-01), Borland
patent: 2004/0058290 (2004-03-01), Mauzey et al.
patent: 2007/0175205 (2007-08-01), Robel et al.
patent: 2008/0163610 (2008-07-01), Baird et al.
“How Computers Work: The CPU and Memory,” Dec. 15, 2003, pdf pp. 1-3.

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