Heating – Shaft type – Having combustion products generated in or fed to shaft
Patent
1976-06-14
1977-11-29
Camby, John J.
Heating
Shaft type
Having combustion products generated in or fed to shaft
432130, 431 10, F23M 304, F27B 110
Patent
active
040603784
ABSTRACT:
Reasons of ecology, health and prevention of corrosion require firing methods and furnaces with which the contents of soot and uncombustible gases such as carbon monoxide, hydrogen, hydrocarbons as well as nitrogen oxides and sulfur trioxides do not excess certain levels. This is obtained by a firing method in which a fuel is decomposed with deficient amounts of primary combustion air to combustible gases. Such gases are combusted by the admixture of secondary and tertiary combustion air amounts whereby a flame is obtained which is extended in space and time and, thus, the temperature of which does not rise above moderate values such as 1400.degree. C. Prior to being exhausted, the combustion gases are thoroughly mixed so as to obtain perfect combustion of possibly subsisting combustible substances. Exhausting takes place with heat withdrawal so that cool and pure combustion gases enter the ambiency. The furnace suitable to carry out such method is distinguished by ceramic walls as well as a combustor at the inlet extremity of the furnace. At least one heat withdrawal means is provided downstream the combustor.
REFERENCES:
patent: 3048131 (1962-08-01), Hardgrove
patent: 3228451 (1966-01-01), Fraser et al.
patent: 3421824 (1969-01-01), Herbst
patent: 3544090 (1970-12-01), Peeters
patent: 3727562 (1973-04-01), Bauer
patent: 3746498 (1973-07-01), Stengel
patent: 3816063 (1974-06-01), Hicquet
patent: 3857672 (1974-12-01), Reed et al.
Camby John J.
Energiagazdalkodasi Intezet
Yuen Henry C.
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