自身蓄热燃烧器的模拟与结构优化

Numerical simulation and optimization of self-regenerative burner

为了解决自身蓄热燃烧器的煤气"短路"问题,将收缩-扩张结构用于燃烧器空气通道对燃烧器进行了优化,并借助fluent软件对优化前后燃烧器的燃烧过程进行了模拟,计算结果表明:优化后的燃烧器能克服煤气"短路"问题,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。

In order to solve the ＂short circuit＂ of coal gas in self-regeneration burner, the air channels of the burner are designed as constriction-zoom structure to optimize normal self-regeneration burner. Also, the numerical simulation of this optimization with fluent is applied. The results show that the optimized burner can conquer the ＂short circuit＂ of coal gas and the flame is expanded. The mean temperature of the furnace rises while the number of partial high temperature zones decreases. And the nitrogen oxides fall sharply, which reduces pollutant emissions apparently.