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常规水平浓淡燃烧器的双通道速度差达6~8 m/s,该速度差会对燃烧稳定性、燃烧效率和NOX排放造成影响,通过对常规直流煤粉燃烧器、水平浓淡煤粉燃烧器和等速型低NOX燃烧器在350 MW电站锅炉上的燃烧过程数值模拟表明:浓淡燃烧技术不改变锅炉炉内的传热特性,等速型低NOX燃烧器比水平浓淡燃烧器可降低NOX排放12%。
Conventional horizontal shale burner dual-channel speed difference of 6 ~ 8 m / s, the speed difference will combustion stability, combustion efficiency and NOx emissions have an impact on the conventional DC pulverized coal burner, the level of pulverized coal burner And constant velocity low NOX burners on a 350 MW power plant boiler show that the lean burn technology does not change the heat transfer characteristics in the boiler and the isokinetic low NOx burners reduce NO x emissions 12%.