详细信息
煤焦二氧化碳气化动力学研究 (Ⅱ)非等温热重法
A STUDY OF CHAR-CO_2 GASIFICATION PART(Ⅱ) BY TEMPERATURE-PROGRAMMED THERMOGRAVIMETRY
文献类型:期刊文献
中文题名:煤焦二氧化碳气化动力学研究 (Ⅱ)非等温热重法
英文题名:A STUDY OF CHAR-CO_2 GASIFICATION PART(Ⅱ) BY TEMPERATURE-PROGRAMMED THERMOGRAVIMETRY
作者:周静[1];龚欣[1];于遵宏[1]
机构:[1]华东理工大学洁净煤技术研究所,上海博士生200237
年份:2003
卷号:26
期号:1
起止页码:78
中文期刊名:煤炭转化
外文期刊名:Coal Conversion
收录:CSTPCD;;北大核心:【北大核心2000】;CSCD:【CSCD2011_2012】;
基金:国家重点基础研究发展规划项目 (G19990 2 2 10 3);高等学校骨干教师资助计划项目
语种:中文
中文关键词:煤焦;二氧化碳;气化动力学;研究;非等温热重法;恒升温速度
外文关键词:coal char gasification,CO 2,kinetics,temperature-programmed thermogravi-metry
摘要:利用热失重仪以恒升温速率 (非等温 )法研究煤焦 - CO2 气化反应 ,并用 Ozawa法和单一升温速率法来求解动力学参数 .结果表明 :Ozawa法和单一升温速率法求解得到的动力学参数差异大 ;单一升温速率法求得的不同升温速率下表观活化能和指前因子呈线性相关性 ;表观活化能随升温速率增加呈线性减小 .
The temperature-programmed thermogravimetry was applied to the char-CO 2 reaction kinetics study.The TG and DTG profiles obtained at heating rates of 10 K/min,15 K/min,20 K/min,25 K/min,30 K/min,35 K/min.In this paper,kinetics parameters were calculated by Freeman method and Ozawa method.The result showed that the apparent activation energies of the char-CO 2 reaction at different heating rates are much different.The apparent activation energies( E ) have the linear relationship with the frequency factors( A ) calculated at different heating rates.Another conclusion was drawn that the higher heating rate is,the higher the peak temperature of DTG curve( T m) and the maxium reaction rate.
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