FURNACE FOR FLUIDIZED BED Russian patent published in 1995 - IPC

FIELD: boiler engineering. SUBSTANCE: furnace has combustion chamber with hopper- like bottom part. An air box is brought into the chamber trough the converging part of the hopper. The top inclined walls of the box and hopper walls define the trapezoidal ring chute with the gas dispensing grate positioned at its bottom. The grate is made up as parallel and radial air supplying pipes provided with bent outlet parts and straight inlet parts, the straight part being connected with the box for permitting reverse rotation with respect to their longitudinal axes. EFFECT: improved design. 9 cl, 3 dwg