BURNER FOR PULVERIZED COAL

摘要

PROBLEM TO BE SOLVED: To provide a burner for pulverized coal which executes the efficient pulverized coal combustion while preventing the damage of a tuyere by burning a large quantity of pulverized coal without damaging furnace condition at the time of operating with pure oxygen or high concn. oxygen. SOLUTION: The tuyere is connected with the tip part of the burner provided with a pulverized coal injection tube 5, tuyere tip temp. adjusting gas blowing tube 7 and an oxygen blowing tube 9. An injection angle of a nozzle is decided so that a position bringing mixed fluid of the pulverized coal and various kinds of fluids into contact with the inner surface of the tuyere becomes the position inner from the tip part by the length having <=1/2 of the tuyere outlet diameter.