主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2021, Vol. 40 ›› Issue (3): 412-415.

• • 上一篇    下一篇

蒙古栎树皮的热解特性及动力学分析

李奇1，薛伟1，张华超1,2   

  1. 1. 东北林业大学工程技术学院，黑龙江哈尔滨150040；2. 吉林省白河林业局，吉林延边133000
  • 出版日期:2021-03-15 发布日期:2021-03-15
  • 通讯作者: 薛伟（1962-），男，东北林业大学工程技术学院教授。
  • 作者简介:李奇（1995-），男，东北林业大学工程技术学院硕士研究生，主要从事林业火灾安全工程研究，黑龙江省哈尔滨市和兴路26 号，150040。
  • 基金资助:
    黑龙江省自然科学基金项目（E2016002）

Pyrolysis characteristics and kinetics of Mongolian oak bark

LI Qi1，XUE Wei1，ZHANG Hua-chao1,2   

  1. 1. College of Engineering and Technology, Northeast Forestry University, Heilongjiang Harbin 150040, China; 2. Baihe Forestry Bureau of Jilin Province, Jilin Yanbian 133000, China

  • Online:2021-03-15 Published:2021-03-15

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摘要： 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，反应越剧烈，升温速率高时，主要失重阶段会发生延后现象；不同的材料粒径会使总失重率产生变化；蒙古栎树皮在高纯空气中反应更为剧烈，说明空气有助于热解过程；蒙古栎树皮热解所需能量较少，热解较易发生。

关键词: 蒙古栎, 树皮, 热解特性, 动力学

Abstract:  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. 

Key words:  Mongolian oak, bark, pyrolysis characteristics, kinetics