Combustion – Process of combustion or burner operation – In a porous body or bed – e.g. – surface combustion – etc.
Patent
1979-12-26
1987-11-03
Focarino, Margaret A.
Combustion
Process of combustion or burner operation
In a porous body or bed, e.g., surface combustion, etc.
122 4D, 432 15, 423244, 423DIG16, 48197R, 110347, F23D 1900
Patent
active
047040840
ABSTRACT:
Nitrogen oxide pollutants are substantially reduced and sulfur dioxide minimized in multisolid fluidized beds by staged combustion of the fuel. The lower combustion region is operated at substoichiometric conditions such that NO.sub.x is reduced by carbon and carbon monoxide to nitrogen gas. The upper combustion region is operated at excess oxygen conditions to complete the combustion of char and carbon monoxide. Elevated temperature excursions in the upper region which deter sulfur capture are prevented by recycling cool entrained bed particles therethrough.
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patent: 4021184 (1977-05-01), Priestly
patent: 4084545 (1978-04-01), Nack et al.
patent: 4103646 (1978-08-01), Yerushalmi
patent: 4111158 (1978-09-01), Reh et al.
patent: 4154581 (1979-05-01), Nack et al.
patent: 4158701 (1979-06-01), Anderson et al.
"Control of NO.sub.x Emissions from Stationary Sources.", Bartok et al., Chemical Engineering Progress, vol. 67, No. 2, p. 64, 1971.
"Fluid Bed Combustion in Processing, Environmental Protection and Energy Supply", by Dr. Reh, paper to the American Flame Research Symposium on International Fluidized Bed Combustion, Boston, Apr. 30, 1979.
"Fluidized Bed Processing", L. Reh, Chemical Engineering Progress, vol. 67, No. 2, pp. 58-63, 1971.
Liu Ke-Tien
Nack Herman
Battelle Development Corporation
Bissell Barry S.
Focarino Margaret A.
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