蒙古栎树皮的热解特性及动力学分析

为研究蒙古栎树皮热解特性,使用热重分析仪将粉碎后的蒙古栎树皮从室温加热至800℃.采用控制变量法,分别以粒径、升温速率、实验气氛为变量进行实验,得到蒙古栎树皮在不同条件下的热解特性,使用Coats-Redfern积分法进行数据分析.结果表明,蒙古栎树皮颗粒热解过程共有4个阶段,第三阶段为主要热解阶段;升温速度越快,反应...

Pyrolysis characteristics and kinetics of Mongolian oak bark

In order to study the pyrolysis characteristics of Mongolian oak bark,the crushed bark was heated from room temperature to 800℃by thermogravimetric analyzer.The pyrolysis characteristics of Mongolian oak bark under different conditions were obtained by controlling variable method with particle size,heating rate and experimental atmosphere as variables.Coats-Redfern integral method was used for data analysis.The results show that there are four stages in the pyrolysis process of Mongolian oak bark particles,and the third stage is the main pyrolysis stage;the faster the heating rate is,the more intense the reaction is;when the heating rate is high,the main weight loss stage will be delayed;different particle size of materials will change the total weight loss rate;the reaction of Mongolian oak bark in high-purity air is more intense,which indicates that air is helpful to the pyrolysis process;The pyrolysis of Mongolian oak bark needs less energy and is easy to occur.