Exhaust stream treatment

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Waste gas purifier

Reexamination Certificate

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Details

C422S177000, C422S180000, C423S239100

Reexamination Certificate

active

07608226

ABSTRACT:
A method comprises injecting a reductant stream comprising a hydrocarbon reductant and water into an exhaust chamber comprising a nitrogen oxide-containing exhaust stream; contacting a composition comprising the reductant stream and exhaust stream with a catalyst; and decreasing a concentration of the nitrogen oxide in the composition comprising the reductant stream and exhaust stream. An exhaust stream treatment system, comprises an exhaust chamber comprising a catalyst; an exhaust stream comprising a nitrogen oxide; and a reductant stream comprising a hydrocarbon reductant and water.

REFERENCES:
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patent: 4693874 (1987-09-01), Hurst
patent: 4877590 (1989-10-01), Epperly et al.
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patent: 5809774 (1998-09-01), Peter-Hoblyn et al.
patent: 5894728 (1999-04-01), Wakamoto
patent: 6202407 (2001-03-01), Brusaco et al.
patent: 2004/0057887 (2004-03-01), Sun et al.
patent: 2009/0047199 (2009-02-01), Arrol et al.
patent: 05280325 (1993-10-01), None
patent: 2000026834 (2000-01-01), None
English Abstract, JP2000026834, Jan. 25, 2000.
English Abstract, JP05280325, Oct. 26, 1993.
EP Search Report, EP 06253295, Nov. 22, 2006.

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