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Emissions of nitrogen oxide from a circulating fluidized bed boiler--the influence of design parameters

Lars-Erik Åmand (Institutionen för energiomvandling) ; Bo Leckner (Institutionen för energiomvandling)
In Circulating Fluidized Bed Technology II, Proceedings of the Second International Conference on Circulating Fluidized Beds, Compiégne, France, 14-18 March 1988 p. 457-464. (1988)
[Konferensbidrag, refereegranskat]

In a circulating bed of silica sand, char is the principal agent for the reduc­tion of nitrogen oxide. The role of volatiles is not significant. Most features observed can be qualitatively explained as a consequence of the presence of char.In a circulating bed with limestone addition, the oxidation of nitrogen containing volatiles causes an increased emission of nitrogen oxide. This effect can be mitigated by avoiding excess addition of limestone in relation to the sulphur content of the fuel or by arranging the air supply in a suitable way, thus de­creasing the oxidation of ammonia.

Nyckelord: Nitrogen oxide emission; Circulating fluidized bed; Boiler; Air supply; Primary and secondary air


The Proceedings of the Second International Conference on Circulating Fluidized Beds held in Compiégne, France, 14-18 March 1988 was edited by Prabir Basu and Jean Francois Large. The conference was organized by the Secretariat of the International Conference on Circulating Fluidized Beds. P.O Box 1000, Halifax, Nova Scotia, Canada B3J 2X4.



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Institutioner (Chalmers)

Institutionen för energiomvandling (1900-2003)

Ämnesområden

Energi
Hållbar utveckling
Termisk energiteknik
Miljöteknik

Chalmers infrastruktur

Chalmers Kraftcentral (CK)