CIRCULATING FLUID BED COMBUSTOR WITH CO COMBUSTION PROMOTER AND REDUCED COMBUSTION AIR

摘要

Addition of a CO combustion promoter to a circulating fluid bed (CFB) combustion unit and reduction of the air addition rate to 100-110 % of stoichiometric improves the efficiency of CO burning, reduces emissions of CO and improves the efficiency of the unit. Stable, reduced temperature operation with air rates close to stoichiometric, reduces NOx emissions. A circulating (100-400 νm particles) or fast settling (400-1200 νm particle) CO combustion promoter may be used.