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为降低NOx排放浓度,利港电厂对2台350 MW机组锅炉的燃烧系统进行了改造.改造后,NOx排放浓度平均降幅达63%和71%,但2台锅炉的烟道进口处均发生严重结渣.为此,电厂进行了多次试验和调整,找出了改造后烟道进口处结渣的原因,并通过调整燃烧器配风方式解决了结渣问题,为今后运行方式的选择及连续高负荷运行工况的调整提供了依据.
In order to reduce the concentration of NOx emissions, the Hong Kong Power Plant retrofitted the combustion system of two 350 MW units of boilers. After the retrofit, NOx emission concentrations decreased by an average of 63% and 71%, respectively, but the flue entrances of both boilers were serious Slagging.For this reason, the power plant carried out many tests and adjustments to find out the reasons for the fouling at the flue inlet after the reformation, and solved the problem of slagging by adjusting the burner air distribution mode, which provided the basis for the future operation mode selection and continuous High load operating conditions to provide a basis for adjustment.