论文部分内容阅读
在简化的绝热预混合条件下,对单个煤粒和煤粉燃烧的影响因素进行了数学分析。作为炉内放热率的函数而研究的主要因素是温度水平,空气燃料当量比,煤粉细度和挥发分含量。得到如下的定量分析结论: 1) 煤粉燃烧受表面化学反应的控制; 2) 因为有少量的大颗粒存在,煤粉的燃烧是不同于单个煤粒的燃烧; 3) 在炉内低温、低过量空气和高放热率的工况下,煤的未燃烧部分增加; 4) 煤粉的细度和挥发分含量对煤的未
Under the simplified adiabatic pre-mixing conditions, the mathematical analysis of the influencing factors of single coal particles and pulverized coal combustion was carried out. The main factors studied as a function of the heat release rate in the furnace are the temperature level, air-fuel equivalence ratio, coal fineness and volatile content. Get the following quantitative analysis conclusions: 1) pulverized coal combustion is controlled by the surface chemical reaction; 2) the combustion of pulverized coal is different from the combustion of a single coal pellet due to the small amount of large particles; 3) Excess air and high heat release rate of the coal unburned part of the increase; 4) The fineness and volatile content of coal on the coal is not