劣质混煤的热解与燃烧特性

Characteristics of pyrolysis and combustion of low quality mixing coal

利用热重法研究了洗选煤矸石与洗中煤混合而成的劣质混煤的热解与燃烧特性,获得了着火温度、燃尽温度、综合燃烧特性指数、燃尽指数等特征参数,通过动力学分析得到了活化能与频率因子等参数。研究结果对优化循环流化床锅炉的运行、节约燃料减少污染排放具有重要意义。

The characteristics of pyrolysis and combustion of low quality mixing coal are investigated by thermogravimetry, in which the coal is mixed by washed coal gangue and washed middling coal. The ignition temperature, burnout temperature, comprehensive combustion parameters and burnout parameters are obtained. The activation energy frequency factor of samples are acquired by analyzing combustion kinetics. It is found that the ignition temperature is 473℃and the burnout temperature is 670 ~C. The activation energy is about 232.55 kJ/ tool and the volatile matter is separated out from 415 ℃.