Method of at least partially burning a hydrocarbon and/or carbon

Details Method of at least partially burning a hydrocarbon and/or carbon Method of at least partially burning a hydrocarbon and/or carbon

1980-12-29

1983-03-08

Scott, Samuel

Combustion

Process of combustion or burner operation

In a porous body or bed, e.g., surface combustion, etc.

431170, 431328, 431351, E23C 1102

Patent

active

043759491

ABSTRACT:
A method of at least partially burning a hydrocarbon and/or carbonaceous fuel in order to yield hot gaseous products of relatively low pollutant content, in which the fuel is partially burned in a first stage flame under such conditions that the partially combusted fuel has a temperature in the range 800.degree. to 1600.degree. C., (e.g., about 1150.degree. C.) and is substantially free of smoke and/or carbon, bringing the partially combusted fuel at 800.degree. to 1600.degree. C. into contact with a substantially non-volatile catalyst (19) which is active for reducing the amount of NO.sub.x in the partially combusted fuel, and then at least partially burning the partially combusted fuel, after contact with the catalyst (19) in a second stage flame to yield the desired low pollutant hot gaseous products. Preferably one or both of the said flames burns in contact with a substantially non-volatile catalyst (25, 23) to reduce still further the NO.sub.x content of the final gaseous products. The preferred non-volatile catalysts (19, 25, 23) comprise either a mixture of iron and chromium oxides or cobalt oxide.

REFERENCES:
patent: 3376098 (1968-04-01), Pryor
patent: 3832122 (1974-08-01), La Haye
patent: 3928961 (1975-12-01), Pfefferle
patent: 4007002 (1977-02-01), Schirmer
patent: 4047877 (1977-09-01), Flanagan
patent: 4088435 (1978-05-01), Hindin et al.
patent: 4197701 (1980-04-01), Boyum

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