昆明地区常见针叶树种叶的热解特性和动力学研究

Pyrolytic characteristics and kinetics research on the leaves of common coniferous tree species in Kunming area

用热重分析法,在一定氮气(20 mL/min)条件下对昆明地区常见9种针叶树种叶的热失重过程进行研究。通过热失重率(TG)和失重速率(DTG)曲线分析,求取样品的着火温度与燃烬温度并计算燃烧特性指数,由一级反应过程和Coats-Redfern模型计算得出热解动力学参数。根据分析和计算结果对9种针叶树种叶的相关特征参数进行排序。

The pyrolytic characteristics of 9 common coniferous trees leaves which collected in Kunming area were studied on the stream of pure N2 conditions（20 mL/min） using thermo-gravimetric analysis.The kindling point,ending point and buring characters obtained through TG（thermo-gravimetric analysis）and DTG（differential thermo-gravimetric analysis）analysis techniques.And with the methods of first-order global and Coasts-Redfern,the kinetic parameters was figure out.The characteristic parameters were sequenced based on the experiment results and analysis.