Combustion behavior of single pulverized coals (PCs) and co-combustion characteristics of anthracite (AT) and bituminite (BT) blends with 20 wt.% volatile were studied by thermogravimetric experiments. The results indicated that reaction characteristics of PCs were closely related to their functional group structure and consequently, the pyrolysis of PCs with highly active functional groups initiated at lower temperatures. It was also noticed that the discrepancy of functional group structures between AT and BT might impair their interaction during combustion. The early exhaust of BT at low temperatures would possibly lead to an independent combustion of volatile and residual carbon and eventually the inefficient combustion of their blend. However, the mixing of AT and BT with similar functional group structures was more likely to achieve blends with superior combustion property. Simultaneously, non-isothermal kinetic analysis manifested that the combustion of blends followed random pore model (RPM), and therefore, the parameters calculated by RPM were more accurate to describe their combustion behavior. The kinetic calculation results showed that the activation energy required for decomposition of blends in early combustion stage was much lower owing to the excellent activity of volatile, while residual carbon with stable aromatic hydrocarbon demanded more energy to initiate its combustion.

通过热重实验研究了单粉煤（PCs）的燃烧行为以及挥发份为20％（重量）的无烟煤（AT）和烟煤（BT）混合物的共燃特性。结果表明，PC的反应特性与其官能团的结构密切相关，因此，具有较高活性的官能团的PC的热解在较低的温度下开始。还应注意的是，AT和BT之间官能团结构的差异可能会削弱它们在燃烧过程中的相互作用。低温下BT的早期排气可能会导致挥发性碳和残留碳的独立燃烧，并最终导致其混合物的低效燃烧。然而，混合具有相似官能团结构的AT和BT更有可能获得具有优异燃烧性能的混合物。同时，非等温动力学分析表明，混合物的燃烧遵循随机孔模型（RPM），因此，RPM计算的参数更准确地描述了它们的燃烧行为。动力学计算结果表明，由于挥发物的优异活性，燃烧早期共混物分解所需的活化能要低得多，而具有稳定芳烃的残余碳则需要更多的能量来引发其燃烧。RPM计算的参数更准确地描述了它们的燃烧行为。动力学计算结果表明，由于挥发物的优异活性，燃烧早期共混物分解所需的活化能要低得多，而具有稳定芳烃的残余碳则需要更多的能量来引发其燃烧。RPM计算的参数更准确地描述了它们的燃烧行为。动力学计算结果表明，由于挥发物的优异活性，燃烧早期共混物分解所需的活化能要低得多，而具有稳定芳烃的残余碳则需要更多的能量来引发其燃烧。