METHODS OF UTILIZING BOILER BLOWDOWN FOR REDUCING NOX
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United States of America Patent
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Oct 15, 2002
Grant Date -
Oct 31, 2002
app pub date -
Apr 26, 2001
filing date -
Apr 26, 2001
priority date (Note) -
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Abstract
The present invention provides improved methods of reducing NO.sub.x emissions in the flue gases produced by a steam boiler fired by a fluid fuel and combustion air burner and including a steam drum provided with make-up water from which produced steam and blowdown steam are withdrawn. In accordance with the invention at least a portion of the blowdown steam is combined with the fluid fuel or combustion air or both.
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