| 核桃壳与煤共热解的热重分析及动力学研究 |
| |
| 引用本文： | 黄元波,郑志锋,蒋剑春,戴伟娣,孙云娟.核桃壳与煤共热解的热重分析及动力学研究[J].林产化学与工业,2012,32(2):30-36. |
| |
| 作者姓名： | 黄元波 郑志锋 蒋剑春 戴伟娣 孙云娟 |
| |
| 作者单位： | 1. 西南林业大学 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;材料工程学院, 云南 昆明 650224;;2. 中国林业科学研究院 林产化学工业研究所;生物质化学 利用国家工程实验室;国家林业局 林产化学工程重点开放性实验室; 江苏省生物质能源与材料重点实验室, 江苏 南京 210042 |
| |
| 基金项目： | 国家自然科学基金资助项目(30800867,31160147);教育部新世纪优秀人才计划资助项目(NCET-09-0906);中国博士后科学基金项目(20080430465) |
| |
| 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、褐煤以及核桃壳-褐煤(质量比1∶1)混合物的热解失重行为进行了研究,求取了热解动力学参数。实验结果表明,随着升温速率的提高,3种原料的失重率下降,热失重速率升高;核桃壳与褐煤共热解时存在协同作用;三者的平衡热解温度分别为568.9、709.9和571.0K。应用Coats-Redfern方法进行热解动力学过程分析表明,3种原料均可由一级反应过程描述。核桃壳快速热解和残余物缓慢热解阶段的平均活化能分别为50.6、17.3 kJ/mol,褐煤的平均活化能为21.1 kJ/mol,核桃壳-褐煤混合物快速热解和残余物缓慢热解阶段的平均活化能分别为34.2和14.5 kJ/mol。
|
| 关 键 词： | 核桃壳 褐煤 热解 热重分析 动力学 |
Thermogravimetric Analysis and Kinetics of Walnut Shell and Coal Co-pyrolysis |
| |
| HUANG Yuan-bo,ZHENG Zhi-feng,JIANG Jian-chun,DAI Wei-di,SUN Yun-juan.Thermogravimetric Analysis and Kinetics of Walnut Shell and Coal Co-pyrolysis[J].Chemistry & Industry of Forest Products,2012,32(2):30-36. |
| |
| Authors: | HUANG Yuan-bo ZHENG Zhi-feng JIANG Jian-chun DAI Wei-di SUN Yun-juan |
| |
| Institution: | 1.Key Laboratory of Forest Resources Conservation and Use in the Southwest Mountains of China(SWFU),Ministry of Education;College of Material Engineering,Southwest Forestry University,Kunming 650224,China; 2.Institute of Chemical Industry of Forest Products,CAF;National Engineering Laboratory for Chemical Utilization of Biomass;Key and Open Lab.of Forest Chemical Engineering,SFA;Key Lab.of Biomass Energy and Material,Jiangsu Province,Nanjing 210042,China) |
| |
| Abstract: | The pyrolysis characteristics of walnut shell,coal and their blends sample at different heating rates(5-50 K/min) in a stream of N2 were studied using thermogravimetric analysis.The results showed that the pyrolysis speed increases with the heating rate for three samples increasing.It showed a good synergy during the co-pyrolysis of walnut shell and coal.The balance thermal decomposition temperature of walnut shell,coal and their blends was 568.9,709.9 and 571.0 K,respectively.With the method of Coasts-Redfern,the pyrolysis process could be described by first-order global model for both of fast-pyrolysis and slow decomposition stage.The average activation energy was 50.6 and 17.3 kJ/mol for both pyrolysis stages of walnut shell,respectively.It was 21.1 kJ/mol for pyrolysis of lignite.But it decreased to 34.2 kJ/mol and 14.5 kJ/mol for both pyrolysis stages of blends of walnut shell/coal,respectively. |
| |
| Keywords: | walnut shell lignite pyrolysis thermogravimetric analysis kinetics |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《林产化学与工业》浏览原始摘要信息 |
|
