PURPOSE: To provide a burner for solid fuel and a pulverized coal firing equipment, capable of preventing the adhesion of slag to a flame stabilizer as well as cooling and reduced in the discharging concentration of NOx.
CONSTITUTION: A bluff-body type flame stabilizer 36 is provided with the configuration of V-shape and the like and is installed so as to be spread from the fore stream side of the mixed flow 22 of pulverized coal and primary air toward the rear stream side of the same. The shape of the flame stabilizer, which is provided with the V-shape and the like, becomes deeper than the depth of a flat plate type internal flame stabilizer in the side of a flame (inside of a furnace) whereby molten slag hardly arrives at the surface of the flame stabilizer whereby the adhesion of slag can be prevented and it becomes effective for the countermeasure against errosion. On the other hand, the cooling of the flame stabilizer 36 is effected by the primary air of about 80°C and the forming of stagnation point can be prevented compared with the flat plate type flame stabilizer while the flame stabilizer is provided with a slanted surface such as V-shape and the like whereby the surface area of the flame stabilizer is larger than the flat plate type (a projected area is the same) and it functions to promote cooling. As a synergistic effect, when the cooling of the flame stabilizer 36 is promoted, the adhesion of slag to the flame stabilizer can be restrained effectively and naturally.
BABA AKIRA
OYATSU NORIYUKI
TAKARAYAMA NOBORU
MORITA SHIGEKI
Next Patent: METHOD OF REDUCING GENERATION OF NOX IN PULVERIZED COAL FIRING EQUIPMENT