影响四角喷燃煤粉炉再热器汽温的因素分析及调整措施

Impact Tangentially Fired Pulverized Coal Reheater Steam Temperature Factors and Adjustemnt Measures

针对某电厂一直存在再热器超温现象,减温水投入量较大,严重影响了锅炉的安全运行。通过现场试验,掌握了锅炉运行特性,详细的分析再热器管壁超温的原因主要受过量空气系数,火焰中心位置、燃料性质的影响较大,通过对机组的风煤配比,改变燃烧器摆角等可调参数的调节,改善了机组的超温报警现象,确保锅炉安全、稳定、经济运行。

There has been a power plant reheater over-heating phenomena,Reducing the amount of attempering water,seriously influences the safe operation of boiler,Throug on-sitee test,the operation characteristics of the boiler was known.Detailed analysis of the reheater temperature is due mainly to excessive air cofficient,the flame center,the fule properties.By adjusting the ratio of air-coal,changing the burner swing angle etc adjustable parameters,reduce the phenomena over-heatering,ensure the safe and economical operation of the boil.