Liquid heaters and vaporizers – Miscellaneous
Patent
1997-11-21
1999-03-09
Paschall, Mark H.
Liquid heaters and vaporizers
Miscellaneous
122247, 110345, B09B 300
Patent
active
058787003
ABSTRACT:
An integrated reburn system for a cyclone-fired boiler has a reburn fuel feed nozzle through a cyclone burner into the cyclone barrel, or furnace, at a region of low-velocity fuel and air movement. The reburn fuel is injected at high velocity and mostly does not mix with the combustion fuels and gases within the cyclone barrel. The reburn fuel passes through the re-entrant throat of the cyclone into the main furnace, where it forms a reburn zone having a reducing atmosphere in which the reburn fuel reacts with combustion gases from the main combustion zone to convert NO.sub.x to N.sub.2, thereby reducing the amount of NO.sub.x emissions produced by the furnace.
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Farzan Hamid
Maringo Gerald J.
Edwards Robert J.
Marich Eric
McDermott Technology Inc.
Paschall Mark H.
The Babcock & Wilcox Company
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