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某600MW机组四角切圆燃烧锅炉，采用顶部燃尽风并配合使用偏转二次风系统，炉膛下部二次风大角度正切，上部二次风和OFA风反切消旋，在炉膛截面水平方向和炉膛高度方向形成分级燃烧。实际运行结果表明，该燃烧器布置方式能抑制炉内结渣，减轻炉膛出口旋转残余并能降低NOx排放量。通过对该600MW机组锅炉进行多工况试验，摸索该炉的NOx排放特性，并在试验中采用燃烧调整方法降低NOx排放，获得了良好的效果，将锅炉的氮氧化物排放水平降低到国家标准限定值以下，为采用偏转二次风系统的大型电站锅炉降低NOx排放提供参考。图５表２
A 600MW unit square tangentially fired boiler, the top of the combustion air and the use of deflected secondary air system, the lower part of the furnace secondary air high angle tangent, the upper secondary air and OFA wind anti race race, the cross section of the hearth in the horizontal direction and the furnace High-grade formation of staged combustion. The actual operation results show that the arrangement of the burner can restrain the slagging in the furnace, reduce the rotation residue of the furnace outlet and reduce the NOx emission. Through the multi-condition test of the 600MW unit boiler to explore the NOx emission characteristics of the furnace, and in the experiment using combustion adjustment method to reduce NOx emissions, and achieved good results, the boiler’s nitrogen oxide emissions reduced to the national standard Below the limit value, for the use of deflection secondary air system of large power plant boiler to reduce NOx emissions provide a reference. Figure 5 Table 2