| 摘要 |
A nozzle for fluidisation gas at a fireplace comprised of a body part (18) and a mouth piece part (21) covering this. The body part (18) contains two parallel plates (19) welded in between two water-cooled tubes (16) in the bottom of the fireplace, and protruding up over this. The mouth piece part (21) comprises a ridge-shaped lid part (22) and two downward projecting side walls (23), which are perforated and each located somewhat outside of the closely lying body part's plate (19). The side walls (23) are connected to the plates (19) through the part of the wall (25) arranged essentially angled against the latter. The fluidisation gas is supplied from a dividing box (27) under the bottom. The shape of the nozzle prevents particles from bed material from flowing down in the air box.<IMAGE> |
