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

摘要

The addition of a CO combustion promoter in a combustion unit to circulating fluidized bed (CFB) as well as the reduction of the air addition rate to a value between 100 and 110% of the stoichiometric value improves the efficiency of CO, reduces carbon emissions and improves the efficiency of the unit. The stable operation at reduced temperature in air velocities near the stoichiometric value reduces NOx emissions. One can use a CO combustion promoter circulating (particles of 100 to 400 mu m) or rapid deposition (particles of 400 to 1200 mum).