Grate assembly for a fluidized bed boiler

Details Grate assembly for a fluidized bed boiler Grate assembly for a fluidized bed boiler

F - Mech Eng,Light,Heat,Weapons

23

H

F23H 3/02 (2006.01) B01J 8/44 (2006.01) F22B 31/00 (2006.01) F23C 10/20 (2006.01)

Patent

CA 2137394

The invention relates to a grate assembly for a fluidized bed boiler. It comprises a number of parallel sparge pipes (1) or the like extending side-by-side in a substantially horizontal plane and provided with elements (3) for supplying fluidizing air from within the sparge pipes (1) or the like into a combustion chamber (T) located above the grate assembly. The discharge of some of the fluidized bed materials is effected through am aperture system (2) between the sparge pipes (1) or the like into a receiver unit (4) fitted below the grate assembly. The sparge pipes (1) or the like are provided with a cooling medium circulation by means of a duct assembly (9).

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