芝麻壳的热解特性与动力学分析

doi:10.16039/j.cnki.cn22-1249.2019.09.004

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摘要

为了探究芝麻壳的热解性质，实现芝麻壳热解的有效利用，利用热重分析对芝麻壳进行热解实验研究，考察了其在不同升温速率下的TG和DTG变化，发现芝麻壳的热解分为三个明显阶段，主要失重区间从200 ℃到400 ℃之间，为快速分解阶段，从400 ℃到1000 ℃，反应缓慢，失重率降低。两个主要阶段反应符合一级反应动力学模型，反应活化能分别为23.2726.02 kJmol-1和19.9421.48 kJmol-1，升温速率相同时，低温热解活化能均大于高温热解活化。

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	马明硕
	徐利
	刘殿博
	刘宝君
	金华
	曾晓丹

关键词: 芝麻壳活化能热动力学分析

Abstract:

In order to explore the pyrolysis properties of sesame shell and realize its effective utilization, the TG and DTG methods are adopted to investigate the pyrolysis behavior at different heating rates. The results show that the main weightlessness range is from 200 ℃ to 400 ℃, which is a fast decomposition stage, from 400 ℃ to 1000 ℃, the reaction rate slower, the weight loss decrease. Kinetic analysis show that the two pyrolysis stages can be simplified as a first-order reaction，and calculated activation energy are 23.2726.02 kJmol-1 and 19.9421.48 kJmol-1，respectively. The activation energies of low temperature pyrolysis are higher than that of high temperature pyrolysis at the same heating rate.

Key words: sesame shell activation energy thermal kinetic analysis

出版日期: 2019-09-25 发布日期: 2019-09-25 整期出版日期: 2019-09-25

O643.12

引用本文:

马明硕, 徐利, 刘殿博, 刘宝君, 金华, 曾晓丹. 芝麻壳的热解特性与动力学分析 [J]. 吉林化工学院学报, 2019, 36(9): 14-17.
MA Mingshuo, XU Li, LIU Dianbo, LIU Baojun, JIN Hua, ZENG Xiaodan. Pyrolysis Characteristics and Kinetics Analysis of Sesame Shell . Journal of Jilin Institute of Chemical Technology, 2019, 36(9): 14-17.

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https://xuebao.jlict.edu.cn/CN/10.16039/j.cnki.cn22-1249.2019.09.004 或 https://xuebao.jlict.edu.cn/CN/Y2019/V36/I9/14

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