文献类型：期刊文献

中文题名：纤维素的加压热解特性及动力学研究

英文题名：Study on pressurized pyrolysis characteristics and kinetics of cellulose

作者：胡亿明[1] 蒋剑春[1] 孙云娟[1,2] 杨中志[1]

第一作者：胡亿明

机构：[1]中国林业科学研究院林产化学工业研究所;[2]江苏省生物质能源与材料重点实验室

年份：2013

卷号：31

期号：7

起止页码：70-76

中文期刊名：可再生能源

外文期刊名：Renewable Energy Resources

收录：CSTPCD;;北大核心:【北大核心2011】；

基金：江苏省生物质能源与材料重点实验室开放基金(JSBEM201208);林业生物质制备合成气技术与装备研制林业公益性行业专项(200904062)

语种：中文

中文关键词：纤维素;热解;加压;动力学;活化能

外文关键词：cellulose; pyrolysis; pressurized; kinetics; activation energy

分类号：TK6;S216.2

摘要：利用加压热重仪对纤维素进行了热重分析实验,获得了不同升温速率(5,10,20 K/min)和不同压力(0.1,0.5,1,1.5,2 MPa)条件下的热重曲线TG和失重速率曲线DTG,并通过热分析数学方法获得了热解动力学参数。结果表明,在各压力条件下,提高升温速率,纤维素主热解区间均往高温区移动,热解略有加深;在各升温速率条件下,增大压力,主热解区间均往低温区移动,热解时间缩短,剩余残渣百分比增大;在同一升温速率下,随着压力的增大,热解活化能增大,且升温速率越大,活化能随压力增大越明显;在同一压力下,随着升温速率的提高,热解活化能增大,且压力越大,活化能随升温速率增大趋势越明显;在各条件下热解活化能和指前因子存在着较好的补偿效应。
The cellulose was analysised by pressurized thermo gravimetric analyzer,and TG curves and DTG curves were obtained under different heating rates（5,10,20 K/min） and pressures（0.1,0.5,1,1.5,2 MPa）,and pyrolysis kinetic parameters was gained by thermal analysis mathematical methodology.The results indicated that the main pyrolysis region shifted to the higher temperature range and pyrolysis lever increased slightly when raising heating rate no matter what the pressure was;the main pyrolysis region moved to the lower temperature zone,pyrolysis time became shorter and the residue ratio raised when increased pressure and each heating rates;activation energy increased along with the pressure increasing under the same heating rate,and increased obviously at the greater heating rate;pyrolysis activation energy was increased under the same pressure with the heating rate increasing,and increased significantly in higher pressure;There were existed a good compensation effect between the pyrolysis activation energy and pre-exponential factor under various conditions