Application of High Efficiency, Low Pollution, Adjustable Two - Pass Burner in HG -220/9.8 -9 Type Boiler

The paper introduced the principle and features of high efficiency,low pollution,adjustable two -pass pulverized coal burners with the retrofit of burners of No.2 boiler in Yantai Power Plant as example,the lower primary air jets were retrofitted to the high efficiency,low pollution,adjustable two -pass pulverized coal burners.The cold state aerodynamic field test,hot state combustion adjusting test and tow - toad combustion test of furnace conducted separately showed that,after the retrofit of burners the stability of combustion was enhanced,with the oil consumption for start - up of boiler reduced and the combustible matter of fly ash decreased.The paper has a certain reference role for the design,operation and retrofit of the boilers burning anthracite and lean coal.