This paper presents an experimental study of diffusion jet combustion of gas at different flow rates of CH4–N2 and a constant flow rate of coal. Blow-off curves for a diffusion flame for different nozzle diameters are obtained. It is shown that an increase in the the nozzle diameter causes a decrease in the minimum residual flow rate of the fuel gas at which stable combustion is possible. As coal is supplied, the residual flow rate of the fuel gas also becomes slightly lower. The fluorescence of OH, which makes it possible to analyze the position and dynamics of the flame front is recorded.

中文翻译：

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细粉煤在 CH4-N2 气体射流中扩散燃烧的实验研究

本文介绍了在不同 CH4–N2 流速和恒定煤流速下气体扩散射流燃烧的实验研究。获得了不同喷嘴直径下扩散火焰的吹气曲线。结果表明，喷嘴直径的增加导致可稳定燃烧的燃料气体的最小残余流量减小。随着煤的供应，燃气的剩余流量也略低。OH 的荧光可以用来分析火焰前沿的位置和动态。