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生物质化学工程 ›› 2018, Vol. 52 ›› Issue (6): 8-14.doi: 10.3969/j.issn.1673-5854.2018.06.002

• 研究报告 • 上一篇    下一篇

果壳生物质热解特性与动力学

范方宇1,4, 黄元波2,3, 杨晓琴2, 郑云武2,3, 刘灿2,3, 王珍2,3, 郑志锋2,3   

  1. 1. 西南林业大学 轻工与食品工程学院, 云南 昆明 650224;
    2. 云南省生物质高效利用工程实验室;云南省高校生物质化学炼制与合成重点实验室, 云南 昆明 650224;
    3. 西南林业大学 材料科学与工程学院, 云南 昆明 650224;
    4. 西南林业大学 西南山地森林资源保育与利用教育部重点实验室, 云南 昆明 650224
  • 收稿日期:2017-08-21 出版日期:2018-11-30 发布日期:2018-12-12
  • 通讯作者: 郑志锋(1975-),男,福建福安人,教授/博导,博士,主要从事生物质能源与材料研究;E-mail:zhengzhifeng@swfu.edu.cn。 E-mail:zhengzhifeng@swfu.edu.cn
  • 作者简介:范方宇(1979-),男,四川隆昌人,副教授,博士,主要从事农林产品综合利用研究;E-mail:ffy118@163.com
  • 基金资助:
    国家自然科学基金资助(31670599,31160147);云南省重大科技专项计划资助(2018ZG004)

Pyrolysis Characteristics and Kinetics of Shells Biomass

FAN Fangyu1,4, HUANG Yuanbo2,3, YANG Xiaoqin2, ZHENG Yunwu2,3, LIU Can2,3, WANG Zhen2,3, ZHENG Zhifeng2,3   

  1. 1. College of Light Industry and Food Science, Southwest Forestry University, Kunming 650224, China;
    2. Engineering Laboratory for Highly-efficient Utilization of Biomass, Yunnan Province;University Key Laboratory for Biomass Chemical Refinery and Synthesis, Yunnan Province, Kunming 650224, China;
    3. College of Materials Engineering, Southwest Forestry University, Kunming 650224, China;
    4. Key Laboratory for Forest Resources Conservation and Utilisation in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, China
  • Received:2017-08-21 Online:2018-11-30 Published:2018-12-12

摘要: 采用热重分析仪对林产果壳生物质(澳洲坚果壳、油茶壳、核桃壳)热解特性进行了研究,利用分布活化能模型(DAEM)分析了热解动力学。热解特性研究表明:油茶壳最大失重速率最小,热解起始温度、结束温度、最大失重速率温度均低于澳洲坚果壳和核桃壳;澳洲坚果壳和核桃壳热解特征值近似;3种果壳生物质随升温速率的增加,热解过程向高温区转移。DAEM研究表明:DAEM适用于3种果壳生物质的热解动力学研究,相关系数R2在0.914~0.999之间;澳洲坚果壳热解活化能83.91~211.86 kJ/mol,油茶壳热解活化能68.64~244.49 kJ/mol,核桃壳热解活化能98.69~267.75 kJ/mol;随转化率的增加,3种果壳生物质活化能呈现相同的变化趋势,但变化幅度不同。

关键词: 果壳生物质, 热解特性, 动力学, DAEM, 活化能

Abstract: Pyrolysis properties of forest shells biomass(macadamia nut shell, camellia tea shell and walnut shell) were studied by TG-DTG, and the kinetics were analyzed by distributed activation energy model(DAEM). Pyrolysis characteristics showed that the maximum weight loss rate of camellia tea shell was the minimum. Initial temperature, pyrolysis temperature and the end of the temperature for maximum weight loss rate were lower than those of macadamia nut shell and walnut shell. Pyrolysis characteristic values of macadamia nut shell and walnut shell were approximate, and pyrolysis process transferred from low temperature zone to high temperature zone with increasing the heating rate for three kinds of shell biomass. DAEM were suitable for studying the kinetics of pyrolysis of three kinds of shell biomass, and the correlation coefficients(R2) were 0.914-0.999. The activation energies of macadamia nut shell, camellia tea shell and walnut shell were 83.91-211.86 kJ/mol, 68.64-244.49 kJ/mol and 98.69- 267.75 kJ/mol, respectively. With the increase of conversion rate, the activation energies of three kinds of shell biomass showed the same change trend, but the range of change was different.

Key words: shell biomass, pyrolysis characteristic, kinetic, distribute activation energy model, activation energy

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