Method for reducing unburned carbon in low NOx boilers

Furnaces – Process – Burning pulverized fuel

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Details

110345, 110186, 110218, 110191, 431 12, F23N 102

Patent

active

061642215

ABSTRACT:
The invention provides a method which includes the step of locating a burner of a low NOx boiler that produces a disproportionately high quantity of unburned carbon. The air-to-fuel ratio at the burner is then increased to decrease the percentage of unburned carbon attributable to the burner. The air-to-fuel ratio at a second burner of the low NOx boiler is reduced to maintain a substantially constant total air-to-fuel ratio in the low NOx boiler.

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