COMBUSTION BURNER, SOLID-FUEL-COMBUSTION BURNER, SOLID-FUEL-COMBUSTION BOILER, BOILER, AND METHOD FOR OPERATING BOILER

摘要

PROVIDED IS A COMBUSTION BURNER INCLUDING: A FUEL NOZZLE (51) THAT IS ABLE TO BLOW A FUEL GAS OBTAINED BY MIXING PULVERIZED COAL WITH PRIMARY AIR; A SECONDARY AIR NOZZLE (52) THAT IS ABLE TO BLOW SECONDARY AIR FROM THE OUTSIDE OF THE FUEL NOZZLE (51); A FLAME STABILIZER (54) THAT IS PROVIDED AT A FRONT END PORTION OF THE FUEL NOZZLE (51) SO AS TO BE NEAR THE AXIS CENTER; AND A RECTIFICATION MEMBER (55) THAT IS PROVIDED BETWEEN THE INNER WALL SURFACE OF THE FUEL NOZZLE (51) AND THE FLAME STABILIZER (54), WHEREIN AN APPROPRIATE FLOW OF A FUEL GAS OBTAINED BY MIXING SOLID FUEL WITH AIR MAY BE REALIZED. FIG. 1