中文摘要：

煤热解产生具有高利用价值的煤气和焦油，并伴随产生大量的热解半焦，燃烧是半焦的主要利用途径之一。本文采用非等温热重分析法研究了热解条件（热解温度和停留时间）、热解气氛和燃烧升温速率对热解半焦燃烧行为的影响，并利用Coats-Redfern积分法对半焦燃烧过程进行动力学计算。结果表明：热解温度对甲烷二氧化碳重整与煤热解耦合过程半焦的燃烧反应特性有重要影响。随热解温度升高，半焦燃烧反应性呈下降趋势，反应活化能逐渐增加，这与半焦中较低的挥发分成正相关。热解停留时间和热解气氛对半焦燃烧影响较小。与在氮气中热解半焦相比，加氢热解和耦合热解半焦表现出几乎相同的燃烧特征和反应活化能。燃烧升温速率显著影响半焦的燃烧特性，提高燃烧升温速率促使半焦燃烧反应在更高温度下进行。

英文摘要：

Coal pyrolysis is an effective and efficient method to produce coal gas,tar and clean char.The char,as the main product,is always used for combustion.To investigate the combustion performances of pyrolysis char,the non-isothermal thermal-gravity analysis was taken to study the effect of pyrolysis temperature,holding time and atmosphere on combustion of the resultant pyrolysis char of Buliangou coal in this paper.And Coats-Redfern integrate method was used to kinetic analysis of char combustion.The results showed that the pyrolysis temperature obviously influenced the combustion of char prepared by the integrated process of CO2reforming of CH4with coal pyrolysis.The combustion performance of char decreased and activation energy gradually increased with increasing pyrolysis temperature,which was positively related with low volatile in the char.Pyrolysis holding time and atmosphere had slight effect on char combustion.The char from hydropyrolysis and integrated process showed the similar combustion behaviors and activation energy as those obtained under N2atmosphere.The heating rate of combustion affected the char combustion characteristics.High heating rate resulted in combustion at high temperature.