煤粉火焰稳定——“三高区”原理,即高的煤粉浓度,高的温度,适当的氧浓度,用以分析煤粉燃烧火焰稳定技术。文中介绍采用多种实验和数值计算验证了“三高区”原理的可靠性。研究预燃室内务股气流的混合过程和三维气流场,研究了煤粉颗粒在船形体燃烧器的复杂运动和燃烧。 Pulverized coal flame stability - the “three high-zone” principle, that is, high pulverized coal concentration, high temperature, appropriate oxygen concentration, for the analysis of flame combustion technology of coal combustion. In this paper, a variety of experiments and numerical calculations are used to verify the reliability of the “three high-zone” principle. The mixing process and three-dimensional airflow field in the pre-combustion chamber were studied, and the complex movement and combustion of pulverized coal particles on the hull burner were studied.