摘要
采用热天平 ,在 2 0℃ /min的升温速度下 ,对 1 2种煤的燃烧反应动力学参数进行了试验研究 ,得到表面反应速率系数 In Ks与 1 /T间的关系曲线呈三段线性分布 ,其分界点温度与由燃烧特性曲线所得到的着火温度及最大燃烧速率对应的温度相一致。此外 ,通过计算得到了活化能 E与煤的组成成分间的变化规律及E和频率因子 K两者间的关系曲线。图 1 0表 1参
The dynamic parameters of combustion reaction of 12 coal types were investigated with the thermobalance under 20℃/min heating rate. It's gained that the relation curves between the apparent reaction rate coefficient InKs and 1/ T can be divided into three sections, every section is linear, the temperatures of dividmg points are identical with the ignition temperature and the temperature corresponding to the maximal combustion rate gained from the combustion characteristic curves. The pattern of relation between the activation energy E and composition of coal, and the relation curves between E and frequency factor K are found by calculation. Figs 10, table 1 and refs 3.
出处
《动力工程》
CSCD
2000年第3期703-706,共4页
Power Engineering
关键词
锅炉
煤粉燃烧
动力学参数
热天平
试验
boiler
pulverized coal combustion
dynamic parameters
thermobalance
research
