Method is used to light the boiler of heavy fuel oil firing and the boiler of heavy fuel oil firing

摘要

PROBLEM TO BE SOLVED: To provide a method for igniting heavy fuel oil burning boiler capable of performing simultaneous ignition of several kinds of fuel oil and restricting a consumption efficiency of atomized medium without increasing a discharging amount of soot dusts.SOLUTION: This invention relates to a method for igniting a heavy oil burning boiler 10 for feeding heavy fuel oil and fine particle fluid into a fuel spraying unit of a combustion burner 20 and mixing them to make mixed fluid including fine heavy fuel oil sprayed particles into a furnace 11 together with combustion air. In regard to the heavy oil sprayed particles injected and fed from each of the combustion burners 20 of a plurality of stages arranged in a vertical direction of the furnace 11 while a plurality of kinds of fuel oil including fuel oil with residual carbon elements of 10% or more as heavy fuel oil are ignited simultaneously, combustion characteristic of heavy fuel oil sprayed particles injected and fed from one or a plurality of stages of combustion burners 20 arranged at the upper stage is set to be higher than that of the heavy fuel oil sprayed particles injected and fed from one or a plurality of stages of the combustion burners 20 arranged at the lower stage.SELECTED DRAWING: Figure 1