MULTI-FUEL COMBUSTION BURNER FOR DIFFERENT KINDS OF LIQUID FUELS AND COMBUSTOR HAVING THE BURNER

PROBLEM TO BE SOLVED: To realize good combustion performance of liquid fuels and stabilization of flames in individual burners and reduce emission of NOx and the like in a combustion exhaust gas even when different kinds of liquid fuels are atomized and combusted in one burner unit. SOLUTION: A plurality of atomizers 1 for respectively atomizing with pressure different kinds of liquid fuels instead of changing the kind of fuels by step, are disposed in individual burner units (throats). A fuel atomizing hole of the pressure atomizer 1 is faced to the outer peripheral side of the atomizer 1 to prevent collision of liquid drops from the atomizer 1. As a whole, it produces frames which look as if combustion is conducted by one burner, thereby providing good combustion condition of the fuels and improved stability of flames. Atomization flow rate of liquid fuel from each of burners 24 is controlled in a boiler so that calorific value of fuel combustion in the individual burners 24 is equalized, thus uniforming the head load distribution in a furnace. Accordingly, deterioration of a furnace water wall in a region where the heat load is heavy and production of NOx can be suppressed.