摘要
采用热重分析仪和三种动力学计算方法研究了板栗壳的热解过程,可分为失水干燥、主热解和炭化三个阶段。含量较高挥发分(68.42%)造成主热解区间质量损失最多,主要是木质素、纤维素和半纤维素三种生物质组分的分解,其含量和特性使热解过程产生不同趋势。提高升温速率产生的热滞后现象使热解不够充分,导致主热解阶段活化能和频率因子增大。
The pyrolysis process of chestnut shell was studied by the thermogravimetric analysis and three kinetic analysis methods,which can be divided into three stages:dehydration,main pyrolysis and carbonization.The high volatiles cause the biggest weight loss in the main pyrolysis interval.It is considered that three biomass components including lignin,cellulose and hemicellulose are mainly decomposed,their content and characteristics make the pyrolysis process display different trends.The thermal hysteresis caused by increasing the heating rate makes the pyrolysis inadequate,which leads to the increase of activation energy and frequency factor in the main pyrolysis stage.
作者
耿昕辰
朱静文
周伟
孙煿文
崔恒
王志和
Geng Xinchen;Zhu Jingwen;Zhou Wei;Sun Bowen;Cui Heng;Wang Zhihe(College of Material Science and Engineering,Nanjing Forestry University,Nanjing 210037,China)
出处
《山东化工》
CAS
2021年第13期38-39,43,共3页
Shandong Chemical Industry
基金
南京林业大学大学生创新训练计划项目(2020NFUSPITP0013)。
关键词
板栗壳
热重
热解特性
动力学
chestnut shell
thermogravimetric
pyrolysis characteristics
dynamics
