The problems existing on supercritical units no.3 and no.2 in Yueqing Power Generation Co Ltd

are as follows:the frequency of putting soot-blowers of boiler into service is high

resulting in blow-damage of the heating surface in boiler

the specific electric energy consumption of induce draft fan is increased

the temperature of main and reheated steams being lower

and large amount of maintenance work for the soot-blowers

etc..For this

optimization measures

such as reasonably distributing and reducing in schedule the number of soot-blowers putting into service in a day etc..After optimization of soot-blowing

the steam used for soot-blowing can be saved 36 t in a day under condition of ensuring effectiveness of soot-blowing

representing 32.2% of steam consumption ofr soot-blowing.According to 300 days in operation for one year

each boiler can save chemically treated make-up water 10800 t

and save 1243 t standard coal

having remarkable economic benefits.