内蒙和印尼褐煤的热解特性及动力学分析

摘要

The pyrolysis characteristics of mongolia lignite and indonesian lignite were investigated, and the influence of heating rate on the weight loss process were also discussed. The kinetic of the lignites pyrolysis were analysed with Doyle integration. The studys show that the weight loss process of the two lignites can be divided into four stages, in which the first stage(R. T.200 ℃) is the process of drying degasification, and other stages are the pyrolysis process. The heating rate has slight effect on pyrolysis curve, and the kinetic parameters which was got by Doyle integration can reflect the pyrolysis condition well.%采用非等温热重法对内蒙和印尼两种褐煤的热解特性进行了研究,探讨了升温速率对热解过程的影响,然后用Doyle积分法对褐煤的热解进行了动力学分析.研究表明,两种褐煤的热失重过程都分为四个阶段,第一阶段(室温～200℃)为干燥脱气阶段,其他三段为煤热解阶段.升温速率对热失重过程略有影响,通过动力学分析所得的热解动力学参数能很好地反映煤的热解情况.