Power plants – Combustion products used as motive fluid
Patent
1987-03-23
1988-02-23
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
60723, 431 7, F02C 314
Patent
active
047261811
ABSTRACT:
Hydrocarbon fuel is combusted in a combustion turbine by a method which produces NO.sub.x emmissions below an ultra-low standard. In the method, first, a mix of hydrocarbon fuel and air in a primary flow thereof is burned in a primary combustion zone so as to produce a flow of hot gas of a temperature above that required for an efficient catalytic reaction and which contains NO.sub.x at levels below a low standard but above the ultra-low standard. Next, the hot gas is mixed with hydrocarbon fuel in a secondary flow thereof in a mixing and vaporization zone to provide a flow of heated fuel mixture of a temperature above that required for an efficient catalytic reaction. Thereafter, the heated fuel mixture is inefficiently catalytically reacted in a first catalytic element fuel to provide a flow of effluent gas of a temperature above that required for an efficient catalytic reaction and which contains NO.sub.x at levels below the ultra-low standard and CO and unburned hydrocarbons (UHC) at levels above an acceptable standard. Then, the CO and UHC in the effluent gas flow is mixed in a mixing completion zone to produce a flow of heated mixed effluent gas of a temperature above that required for an efficient catalytic reaction. Finally, the heated mixed effluent gas is efficiently catalytically oxidized in a second catalytic element to provide a flow of exhaust gas having emissions which contains NO.sub.x at levels below the ultra-low standard and CO and UHC at levels below the acceptable standard.
REFERENCES:
patent: 3832122 (1974-08-01), La Haye et al.
patent: 3846979 (1974-11-01), Pfefferle
patent: 3928961 (1975-12-01), Pfefferle
patent: 3943705 (1976-03-01), De Corso et al.
patent: 3982879 (1976-09-01), Pfefferle
patent: 4072007 (1978-02-01), Sanday
patent: 4112675 (1978-09-01), Pillsbury et al.
patent: 4118171 (1978-10-01), Flanagan et al.
patent: 4197701 (1980-04-01), Boyum
patent: 4202168 (1980-05-01), Acheson et al.
patent: 4202169 (1980-05-01), Acheson et al.
patent: 4245980 (1981-01-01), Reed et al.
patent: 4285193 (1981-08-01), Shaw et al.
patent: 4289474 (1981-09-01), Honda et al.
patent: 4354821 (1982-10-01), Kesselring et al.
patent: 4413470 (1983-11-01), Schelhing et al.
EPRI Report No. AP-2584, Oct. 1982, entitled "Stationary Gas Turbine Catalytic Combustor Development Program", prepared by Westinghouse Electric Corporation.
Casaregola Louis J.
Stoltz R. A.
Westinghouse Electric Corp.
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