On the basis of analysing the heat transfer model of rolling-drum slag cooler for circulating fluidized bed(CFB) boiler

an analysis test of factors affecting heat transfer of rolling-drum slag cooler no.3 of boiler no.6 in Qinhuangdao Qinre Power Generation Co Ltd has been carried out by using the orthoganal test method

and the heat equilibrum being calculated.Results show that the analysis of heat transfer model for the rolling-drum slag cooler is more reasonable.In three factors affecting the heat transfer for said slag cooler

the influence of particle size concerning discharged slag is the maximum

the influence of filling amount is the next

and the influence of rotation speed is the minimum.For this

it is recommended that the said slag cooler has to be put into service as fewer as possible during the time of small quantity of slag

and making the filling amount of the slag cooler to be suitable about 40%.At the same time

the particle size of pulverized coal incoming into the furnace can also be reduced

and the reasonable rotation speed of rolling-drum slag cooler should be ensured

so as to enhance the heat transfer coefficiency of the slag cooler.