在径向浓淡旋流煤粉燃烧器的基础上 ,本文提出了一种新型燃烧器———惯性浓淡旋流煤粉燃烧器 ,即在燃烧器一次风通道中加入煤粉浓缩器 ,并将其置于燃烧器喷口较近的位置 ,一次风粉经过煤粉浓缩器后 ,形成了由燃烧器中心向外煤粉浓度由高向低的分布趋势 ,依靠煤粉颗粒的惯性 ,将这种分布趋势一直保持到燃烧器出口。针对一台燃用烟煤的 5 0t/h煤粉炉的特点 ,给出了该燃烧器的布置 ,介绍了改造前后的运行情况 On the basis of radial thick-and-thin swirl pulverized coal burner, this paper presents a new type of burner --- inertial dark swirling pulverized coal burner, which is to add pulverized coal concentrator into the primary air passage of the burner, It is placed in the burner nozzle closer position, a wind powder through the pulverized coal concentrator, the formation of the burner center outward pulverized coal concentration from high to low distribution trend, relying on the inertia of coal particles, this Distribution trend has been maintained to the burner exit. Aiming at the characteristics of a 50t / h pulverized coal fired with bituminous coal, the layout of the burner is given, and the operation before and after reconstruction is introduced