生物油TG-FTIR分析与热解气化特性研究

张怡; 陈登宇; 张栋; 朱锡锋

生物油TG-FTIR分析与热解气化特性研究

中国科学技术大学安徽省生物质洁净能源重点实验室, 安徽合肥 230026

基金项目: 国家高技术研究发展计划(863计划, 2012AA051803); 国家自然科学基金(50930006); 国家科技支撑计划(2011BAD22B07)。

详细信息

通讯作者:
朱锡锋,Tel:0551-3600040;E-mail:xfzhu@ustc.edu.cn。

中图分类号: TK6
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出版历程
- 收稿日期: 2012-03-17
- 修回日期: 2012-06-04
- 刊出日期: 2012-10-31

TG-FTIR analysis of bio-oil and its pyrolysis/gasification property

Anhui Province Key Laboratory of Biomass Clean Energy,University of Science and Technology of China, Hefei 230026, China

摘要

摘要: 以稻壳快速热解产物生物油为对象,在对其进行热重红外检测的基础上,结合生物油及其轻质、重质组分的热解气化实验,研究了生物油热解气化过程及气体产出特性。结果表明,生物油的热解气化分为两个阶段,一是轻质组分的快速挥发热解;二是重质组分的裂解气化与缩合缩聚,活化能分别为35~38 kJ/mol和15~22 kJ/mol。温度升高,热解气化效率增加,以H₂和CO为主的合成气产量增多,但气体产物热值降低。气体中H₂主要来自轻质组分的热解气化,而重质组分则裂解产生较多的CO、CH₄等物质。
- 生物油 /
- 热解气化 /
- 轻质组分 /
- 重质组分
Abstract: The process of bio-oil pyrolysis/gasification and gas evolution characteristic was studied using a thermogravimetric analyzer coupled with Fourier transform infrared spectroscopy (TG-FTIR). Pyrolysis/gasification of bio-oil and its fractions were also performed in a fixed bed. As a result, the process of bio-oil pyrolysis/gasification can be divided into two stages. The first is volatilization and pyrolysis of the light compounds at low temperature and the second is cracking and polymerization of the heavy compounds at high temperature. The values of activation energy are 35~38 kJ/mol in the first stage and 15~22 kJ/mol in the second stage, respectively. With temperature increasing, the conversation of pyrolysis/gasification grows higher and the yield of synthesis gas (syngas) increases. However, the calorific value of the gas has an inverse correlation with the temperature. In comparison, the light fraction (LF) makes more contribution to the overall H₂ release; while CO and CH₄ are mainly generated from the heavy fraction (HF).
- bio-oil /
- pyrolysis/gasification /
- light fraction /
- heavy fraction

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参考文献(14)

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