Ammonia Addition for NOx Reduction in Fluidized Bed Boilers
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 1988

Ammonia is added to the gases in the combustion chamber of fluidized bed briilers in order to investigate its effect ori the emission of nitrogen oxides. A stationary and a circulating fluidized bed boiler are used. In the sta­tionary fluidized bed boiler an addition corresponding to a (NH3/NOexit-molar ratio of 3 gives a 50% reduction of the NO emission. Larger doses lead to escape of ammonia and other disadvantages. In the circulating fluidized bed boiler no effect from injection of ammonia into the combustion chamber is noted. The ammonia is decomposed. If NH3 is to be used in circulating fluidized bed boilers it should be introduced in the particle-free gas after the particle separator.

fluidized bed combustion

NOx reduction

ammonia addition


Lars-Erik Åmand

Institutionen för energiomvandling

Bo G Leckner

Institutionen för energiomvandling

Proceedings from the 1st International Conference on Industrial Furnaces and Boilers


Hållbar utveckling



Annan naturresursteknik




Chalmers kraftcentral