回转水泥窑同向速差射流煤粉燃烧器

摘要

利用多股气体同向流动，人为控制气流的喷射速度，造成一定的速度差，借助射流的强烈的引射作用，使高温烟气回流至一次风、粉混合气流中，使一次风、粉提前加热、着火，从而强化了煤粉的燃烧，并保证了所需火焰的形状，解决了在回转水泥窑中大比例掺烧无烟煤的技术难题。%Using velocity difference among the multiple coflow jets and the strong entraiment effect of high speed jets,the high temperature flue will be recirculated to the exit of pulverized coal stream and mixed with the steam.The coal will be heated and ignited in advance,and thus the coal combustion will be intensified. Meanwhile the flame configuration can be ensured by using the present burner.Therefore the combustion of large amounts of anthrecite added to the bituminous coal is solved.