前言旋流双通道通用煤粉燃烧器是在一般旋流燃烧器的基础上，考虑点火及低负荷稳燃的需要而设计的一种新型燃烧器，并可兼作主燃烧器。它是利用直流、旋流二次风和中心风的配比来对烟气回流进行控制，避免了可动式旋流叶片所常发生的卡涩和不同步现象。加设的预燃筒体燃烧器在 Introduction Swirling dual-channel general-purpose pulverized coal burner is a new burner designed on the basis of general swirling burner, considering the needs of ignition and steady load at low load, and can also serve as the main burner. The utility model utilizes the ratio of the direct current, the secondary flow of swirl and the center wind to control the flue gas backflow, and avoids the jamming and the out-of-sync phenomena that occur frequently in the movable swirl vane. Additional pre-burning cylinder burner at