Furnaces – Process – Burning pulverized fuel
Patent
1982-06-21
1983-11-08
Favors, Edward G.
Furnaces
Process
Burning pulverized fuel
110263, F03D 100
Patent
active
044135734
ABSTRACT:
A dual stage combustion system and process for achieving high fuel combustion efficiency and reduced nitric oxide emissions. Combustion is carried out in two stages. A first partial combustion carried out in an oxygen deficient atmosphere followed by a second complete carbon combustion in an oxidizing atmosphere. The second combustion step achieves complete fuel utilization, but generates a nitrogen oxide containing flue gas. The nitrogen oxide containing flue gas is passed to the first combustion step where it is removed by interaction with the partially combusted solids.
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"Coal Combustion and No.sub.x Formation in an Experimental Fluidized Bed" Gibbs et al, Institute of Fuel Symposium Series No. 1.
"No/Char Reactions at Pulverized Coal Flame Conditions", Jul. 7, 1981, MIT Symposium.
"Mechanisms of No.sub.x Formation and Control" England et al, Eighteenth International Symposium on Combustion, Aug. 1980.
"Application of Advanced Technology for No.sub.x Control" Beer et al; AICHE Symposium Series; 1978.
"Low No.sub.x Combustors for High Nitrogen Fuels" England et al; Symposium on Stationary Combustion Control, Oct. 1980.
Carlson Franklin B.
Hall Robert N.
Thomson William J.
Favors Edward G.
Oldenkamp David J.
Schlyer Lyle J.
Tosco Corporation
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