FURNACE COMBUSTOR FOR COMBUSTION OF LOW VOLATILE FUEL AND COMBUSTION METHOD

摘要

PURPOSE: To raise the combustion efficiency by providing the first and second region within a combustion chamber to combust powder fuel with the first and second fuel jet means, and arranging the second fuel combustion means so that the fuel jet may drag in combustion products from the first fuel region. ;CONSTITUTION: The first burner 46 such as a cyclone burner or the like which floats fuel on primary air and supplies fuel downward toward the first combustion region Z1 of a combustion chamber 30 is attached to the first duct 44. Then, the flame by this burner 46, the combustion gas at high temperature, and the fuel having not combusted are raised along the course B by changing the directions by the natural force of a convection and the shock of the combustion aiding air from a blast plate 60. Moreover, in the combustion chamber 30, the second burner 66 for jetting the fuel floating on the air downward preferentially toward the second combustion region Z2 positioned under the first combustion region Z1 is mounted to the second duct 64, and the combustion products from the first fuel region Z1 are entrained in the fuel jet so as to raise the combustion efficiency.;COPYRIGHT: (C)1993,JPO