Combustion – Process of combustion or burner operation – Feeding flame modifying additive
Patent
1995-04-13
1997-02-11
Yeung, James C.
Combustion
Process of combustion or burner operation
Feeding flame modifying additive
431 8, 431 10, 431 12, 431 90, 422111, F23J 700
Patent
active
056014244
ABSTRACT:
A method and apparatus for controlling NO.sub.x produced by a natural gas fired combustion source includes establishing a control curve for the combustion source for indicating NO.sub.x levels based on steam injection rates and fuel flow rates provided to the burners. The atomizing steam injection flow rate provided to the burner is measured as well as the fuel flow rate. A NO.sub.x level is determined for the combustion source based on the atomizing steam injection flow rate, the firing rate, and the fuel flow rate. NO.sub.x levels are lowered by adding atomized steam to the burners according to the pre-programmed control curve.
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Colannino, Joseph, "Low-Cost Techniques, Reduce Boiler NO.sub.x ", Chemical Engineering, Feb. 1993, pp. 100-106.
Bernstein Gary S.
Milo Thomas K.
Edwards Robert J.
Kalka Daniel S.
The Babcock & Wilcox Company
Yeung James C.
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