Solid fuel boiler and method of operating combustion apparatus

Details Solid fuel boiler and method of operating combustion apparatus Solid fuel boiler and method of operating combustion apparatus

2008-07-01

2008-07-01

Rinehart, Kenneth B (Department: 3749)

Furnaces

With exhaust gas treatment means

Recirculation means

C110S345000

Reexamination Certificate

active

07392752

ABSTRACT:
There is disclosed a solid fuel boiler including: a furnace including a plurality of solid fuel burners and a furnace wall to perform horizontal firing; a duct through which a part of combustion exhaust gas recirculates to a furnace from a downstream side of the furnace; heat exchanger tubes disposed on a furnace wall and in a heat recovery area of the furnace; and recirculation gas ports via which the recirculation gas is supplied to a reducing flame portion of the burners in the furnace without combining the gas with a flame in the vicinity of an outlet of the burner, so that molten ash is prevented from firmly sticking to the furnace wall and thermal NOx, fuel NOx, and unburned carbon.

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Japanese Office Action Issued in corresponding Japanese Patent Application No. JP 2002-377095, dated Jan. 4, 2007.
Japanese Office Action issued in Japanese Patent Application No. JP 2002-377095 dated Jun. 26, 2007.

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