Three stage low NO.sub.x burner and method
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United States of America Patent
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Jan 16, 2007
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N/A
app pub date -
Sep 3, 2004
filing date -
Sep 5, 2003
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Abstract
The present invention is an air-staged low NO.sub.x burner for firing a gaseous fuel. The burner fires three stages, with the first stage of combustion taking place substantially within a burner cup section of a refractory baffle, the second stage of combustion taking place adjacent to the baffle and downstream of the baffle, and the third stage of combustion within a furnace. The flow of main combustion air adjacent to the baffle creates a negative pressure zone adjacent to the baffle. The present invention is also a method for low NO.sub.x staged combustion.
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