将收缩一扩张结构用于燃烧器空气通道,通过喉部变压卷吸炉膛中的大量烟气来实现低氧燃烧,同时用该方法对常规燃烧器进行了改进和优化,并借助Fluent软件对优化前后的燃烧器进行了模拟计算,结果表明:优化后的燃烧器使得火焰体积扩大,炉膛的平均温度升高而局部高温区域减少,氮氧化物的生成量大幅降低,减少了污染.
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