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介绍了可控浓淡旋流燃烧器浓淡分离的原理及试验结果，利用回流区搅拌均匀反应热理论模型，结合风粉射流浓淡分离特点及颗粒浓度分布实验结果，通过热质交换平衡分析，建立了一个旋流燃烧器浓淡煤粉在回流区着火及气流火焰稳定性综合模型，求解得到燃烧器稳定着火燃烧的特征参数及燃烧器结构、运行参数变化对着火的影响，获得使煤粉稳燃的最小回流区长度及主流煤粉浓度，并结合工业性试验结果，对模型进行了验证。
This paper introduces the principle and experimental results of shading separation of controllable shades and swirl burners. By using the theory of uniform reaction heat in the reflow zone and the experimental results of the concentration and concentration of air-jet, combining with the equilibrium analysis of heat and mass exchange, A swirl burner rich and weak pulverized coal combustion in the reflow zone and flame stability of the integrated model of gas flow to solve the combustion characteristics of the burner stable combustion parameters and burner structure, the impact of changes in operating parameters on the fire, so that the stable combustion of coal Minimum recirculation zone length and mainstream pulverized coal concentration, combined with industrial test results, the model was verified.