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变异煤粉浓度燃烧技术是为提高我国电站锅炉调峰能力、降低排烟中ＮＯ_ｘ而研究的一种燃烧新技术。它针对煤燃烧的过程和特点，采用了向火侧一次风高煤粉浓度、高温、高湍动度和背火侧低煤粉浓度的水平浓淡燃烧。充分发挥了向火侧一次风的着火优势，使锅炉的着火稳定性和低负荷调峰性能得到了显著的改善。工业应用证明，在燃用Ａ￣ｙ＝４５％～４６．９５％和Ｖ￣ｆ＝１４．２６％的劣质煤时，着火及时，燃烧稳定，锅炉负荷在５４％～６０％以上不需投油而能稳定燃烧，烟气中ＮＯ_ｘ有明显下降，具有显著的经济和社会效益。
Variation of pulverized coal concentration combustion technology is to improve China’s power plant boiler peak shaving ability, reduce exhaust NO_x in the study of a new combustion technology. It is based on the process and characteristics of coal combustion, the use of a high degree of fire to the side of the coal concentration, high temperature, high turbulence and the back side of the low concentration of pulverized coal combustion level. Give full play to the fire side of the fire advantage of the first fire, the boiler fire stability and low load peak regulation performance has been significantly improved. Industrial application proves that in the burning of inferior coal with A ~ y = 45% ~ 46.95% and V ~ f = 14.26%, the fire is on time and the combustion is stable. The boiler load should be above 54% ~ 60% Oil can be a stable combustion, flue gas NO_x decreased significantly, with significant economic and social benefits.