Denox boiler in engine cogeneration plant

Details Denox boiler in engine cogeneration plant Denox boiler in engine cogeneration plant

2011-08-09

2011-08-09

Warden, Jill (Department: 1773)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

C422S168000, C422S182000

Reexamination Certificate

active

07993596

ABSTRACT:
A gas temperature control apparatus for a DeNOx boiler in an engine cogeneration plant is installed to maintain a reaction temperature of denitrification catalyst used to remove nitrogen oxide generated from an internal combustion engine in the engine cogeneration plant. The apparatus includes a connection passageway between a high-temperature gas part of a combustion tank of the boiler and an intermediate-temperature gas part formed after a first heat exchange, and a flow control valve mounted in the passageway to thereby control a volume of bypass combustion gas. The apparatus can easily raise temperature of combustion gas even though temperature of the inside water of the boiler does not reach a normal operation state since the flow control valve mounted in the connection passageway between the high-temperature gas part and the intermediate-temperature gas part. thereby greatly reducing a time period to reach an activation temperature of the denitrification catalyst.

REFERENCES:
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patent: 5342592 (1994-08-01), Peter-Hoblyn et al.
patent: 7291313 (2007-11-01), Wakasa et al.
patent: 2008/0317652 (2008-12-01), Bono et al.
patent: 1998-051022 (1998-09-01), None
patent: 100164291 (1998-09-01), None

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