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分析了浓淡分离燃烧对煤粉的着火及降低ＮＯｘ的物理基础以及可被利用的程度。同时指出可能带来诸如低挥发份煤的飞灰碳含量增加、水冷壁管的高温腐蚀及引发炉膛结焦等负效应。为此提出了在一次风进入燃烧器后，使其在着火区域实现煤粉的局部浓淡分离燃烧方案，这可能是正确利用浓淡燃烧技术优点的方向。作者已在华中理工大学煤燃烧国家重点实验室立了此项目，旨在利用该技术降低双通道通用煤粉燃烧器ＮＯｘ的排放量，而不是为了调峰与稳燃。指出双通道通用煤粉燃烧器的稳燃能力要比浓淡燃烧器强得多，是至今为止解决大型四角燃烧无烟煤锅炉的稳燃与低负荷运行唯一可靠的途径。
The physical basis of the combustion of pulverized coal, the physical basis of reducing NOx, and the degree to which it can be utilized are analyzed. At the same time, it points out the possible negative effects such as the increase of carbon content of fly ash, the high temperature corrosion of water wall tubes and the coking of furnace hearth. For this reason, a local shading separation combustion scheme that makes it possible to achieve pulverized coal in the ignition zone after the primary air enters the burner may be the direction in which the advantages of the lean burn technology are correctly utilized. The author has set up this project at the State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, aiming to reduce NOx emissions from dual-channel general-purpose pulverized coal burners rather than for peak regulation and stabilization. It is pointed out that the dual-channel general-purpose pulverized coal burner has a much more stable combustion capability than that of a rich burner and is by far the only reliable way to solve the problem of stable combustion and low load operation of a large four-corner combustion anthracite boiler.