详细信息
文献类型:期刊文献
中文题名:核桃壳热解行为及动力学研究
英文题名:Study on Pyrolysis Characteristics and Kinetics of Walnut Shell
作者:郑志锋[1,2] 黄元波[1,2] 蒋剑春[3,4,5,6] 杨晓琴[1,2] 周玲[1,2]
第一作者:郑志锋
机构:[1]西南林学院西南山地森林资源保育与利用省部共建教育部重点实验室;[2]木质科学与装饰工程学院;[3]中国林业科学研究院林产化学工业研究所;[4]生物质化学利用国家工程实验室;[5]国家林业局林产化学工程重点开放性实验室;[6]江苏省生物质能源与材料重点实验室
年份:2010
卷号:30
期号:2
起止页码:6-10
中文期刊名:林产化学与工业
外文期刊名:Chemistry and Industry of Forest Products
收录:CSTPCD;;Scopus;北大核心:【北大核心2008】;CSCD:【CSCD_E2011_2012】;
基金:国家自然科学基金资助项目(30800867);"十一五"国家科技支撑计划资助(2006BAD19B06);教育部科学技术研究重点项目(209117);中国博士后科学基金项目(20080430465)
语种:中文
中文关键词:核桃壳;热解;热重分析;动力学
外文关键词:walnut shell; pyrolysis ; thermogravimetric analysis; kinetics
分类号:TQ351.2
摘要:利用热重分析在不同升温速率(5~50 K/min)和氮气气氛下对核桃壳的热解失重行为进行了研究。实验结果表明,核桃壳的热解过程可分为失水干燥、预热解、快速热解和残余物缓慢分解等4个阶段;快速热解阶段和残余物缓慢分解阶段的失重率分别为55%和32%左右,它们均可由一级反应过程描述,根据一级反应由Coats-Redfern方法计算核桃壳快速热解阶段和残余物缓慢分解阶段的平均活化能分别为50.7和17.3 kJ/mol。实验结果还表明加热速率越大,热解速率越快。
The pyrolysis characteristics of walnut shell at different heating rates (5-50 K/min) under the stream of N2 were studied using thermogravimetric analysis. The result showed that the pyrolysis process of walnut shell included four stages, namely drying, pre-pyrolysis, fast-pyrolysis and slow decomposition of residue. The weight loss during the fast-pyrolysis stage and the slow decomposition stage of residue was about 55 % and 32 %, respectively. The pyrolysis process could be described by the first-order global model for both fast-pyrolysis and slow decomposition stages. With the method of Coats-Redfern, the average activation energy was 50.7 and 17.3 kJ/mol for both pyrolysis stages, respectively. The pyrolysis speed increases with increasing of heating rate.
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