在一维煤粉燃烧炉上进行了不同煤种、不同细度的分级燃烧试验。实验发现 ,分级燃烧对高挥发份煤种以及同一煤种的细煤粉的 NOx排放浓度的降低效果更显著 ,而且在分级燃烧条件下 ,同一煤种细煤粉的飞灰含量较粗煤粉低。另外 ,还得到了不同煤种在分级燃烧条件下的最佳一次风空气系数。图 9表 2参 3 In one-dimensional pulverized coal combustion furnace carried out different coal, different fineness of the staged combustion test. It was found that the effect of fractional combustion on the reduction of NOx emission concentration of high-volatile coal and fine coal of the same coal type was more remarkable. Under the condition of staged combustion, the fly ash content of the same kind of coal was higher than that of coarse coal low. In addition, the best primary air-air coefficient of different coal under staged combustion conditions was also obtained. Figure 9 Table 2 Reference 3