Oxygen enhanced low NOx combustion
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United States of America Patent
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Oct 25, 2005
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N/A
app pub date -
Dec 19, 2002
filing date -
Jan 11, 2001
priority date (Note) -
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Abstract
Fuel such as coal is combusted by feeding fuel and gaseous oxidant containing more than 21 vol. % oxygen, and preferably 21.8 to 29 vol. % oxygen, to a combustion stage at a stoichiometric ratio below that at which, if the stage were operated with air as the only oxidant, the same amount of NOx would be produced, and combusting the fuel and oxidant in said stage to produce combustion products and unburned fuel.
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