油茶壳热解的TG-FT-IR分析及动力学研究

doi:10.3969/j.issn.1673-5854.2015.04.002

生物质化学工程 ›› 2015, Vol. 49 ›› Issue (4): 7-13.doi: 10.3969/j.issn.1673-5854.2015.04.002

油茶壳热解的TG-FT-IR分析及动力学研究

顾洁¹, 刘斌², 张齐生¹, 周建斌¹

1. 南京林业大学材料科学与工程学院, 江苏南京 210037;
2. 南京林业大学化学工程学院, 江苏南京 210037

收稿日期:2015-02-12 出版日期:2015-07-30 发布日期:2015-10-12
通讯作者: 周建斌,教授,博士生导师,研究领域:生物质能源及炭材料;E-mail:zhoujianbin@njfu.com.cn。 E-mail:zhoujianbin@njfu.com.cn
作者简介:顾洁(1990—),女,江苏东台人,硕士,主要从事生物质热解气化与炭材料研究工作
基金资助:
林业公益性行业科研专项项目(201304611);林业科学技术推广([2014]40);江苏高校优势学科建设工程资助项目(PAPD)

TG-FT-IR Analysis and Kinetics Study of Camellia Shell Pyrolysis

GU Jie¹, LIU Bin², ZHANG Qi-sheng¹, ZHOU Jian-bin¹

1. College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China;
2. College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China

Received:2015-02-12 Online:2015-07-30 Published:2015-10-12

摘要/Abstract

摘要： 采用热重红外联用(TG-FT-IR)技术考察了油茶壳的热解规律,并选择2种无机制函数积分法Kissinger-Akahira-Sunose(KAS)法和Flynn-Wall-Ozawa(FWO)法探讨油茶壳热解动力学。结果表明:油茶壳的热解过程可分为4个阶段:脱水、半纤维素热解、纤维素热解和木质素的二次热解。热解挥发分主要有H₂O、CO₂、CO和CH₄,以及一些醛类、酸类、酮类有机物,且热解温度不同各组分的含量不同。KAS法和FWO法计算出的油茶壳热解活化能基本一致,均随着转化率的增大而增加。

关键词: 油茶壳, 热解, TG-FT-IR, 动力学

Abstract: Pyrolysis of camellia shell was studied by using thermogravimetric analyzer coupled with Fourier transform infrared spectroscopy(TG-FT-IR).The activation energies of camellia shell pyrolysis depending on the conversion rate were calculated by two Model-free methods,namely Kissinger-Akahira-Sunose(KAS) and Flynn-Wall-Ozawa(FWO),respectively.The results indicated that the pyrolysis process of camellia shell was divided into four stages,i.e.,dehydration,decomposition of hemicellulose,decomposition of cellulose and the secondary degradation of lignin.The main components of volatiles were H₂O,CO₂,CO,and CH₄,along with kinds of organics,such as aldehydes,acids and ketones.The content of each component at different pyrolysis temperatures was different.The activation energies of camellia shell pyrolysis estimated by KAS and FWO were similar.They rose with the increase of the conversion rate.

Key words: camellia shell, pyrolysis, TG-FT-IR, kinetics

中图分类号:

顾洁, 刘斌, 张齐生, 周建斌. 油茶壳热解的TG-FT-IR分析及动力学研究[J]. 生物质化学工程, 2015, 49(4): 7-13.

GU Jie, LIU Bin, ZHANG Qi-sheng, ZHOU Jian-bin. TG-FT-IR Analysis and Kinetics Study of Camellia Shell Pyrolysis[J]. bce, 2015, 49(4): 7-13.

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油茶壳热解的TG-FT-IR分析及动力学研究

TG-FT-IR Analysis and Kinetics Study of Camellia Shell Pyrolysis

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