Fluid bed furnace.

摘要

At a fluidbed furnace comprising a combustion shaft (10), a particle separator (11), a particle return passage (12) and designed according to conventional design criteria for obtaining a good combustion at moderate temperature, a destruction of laughing gas (N2O), and complete combustion of possible unburnt particles in the combustion gases is brought about in a reactor passage (24) at the entrance of which a combustion means (25) is located. The reactor passage is moderately cooled, so the increase of temperature in the combustion gases is maintained substantially constant unto the first convection heating surface (18).