Abatement member and method for inhibiting formation of oxides o

Details Abatement member and method for inhibiting formation of oxides o Abatement member and method for inhibiting formation of oxides o

1993-04-30

1994-08-02

Yeung, James C.

Stoves and furnaces

Hot-air furnaces

Compressed air

126116R, 138 38, 1651091, 431171, 431347, F24H 302

Patent

active

053335970

ABSTRACT:
An abatement member for inhibiting formation of oxides of nitrogen in a gas-fired furnace by controlling peak flame temperatures and residence times at the peak flame temperatures is described. The combustion system has at least one heat exchanger conduit having a flow path therethrough and at least one gas burner for burning fuel to produce a combustion flame. The abatement member has a porous refractory body portion having at least one section which is disposed transversely to the direction of flow of gases through the conduit. In one embodiment, the abatement member is a metallic screen having a serpentine shape and positioned within the fire tube. The combustion flame is directed toward and into the inlet of a fire tube and through the screen whereby the screen absorbs thermal energy from the combustion flame at a rate which limits peak flame temperatures to levels which inhibit formation of oxides of nitrogen.

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