不同升温速率下煤焦CO_2气化的动力学研究  

Study on CO_2 Gasification Kinetics of Coal Char for Different Heating Rates

作　　者：高正阳[1] 吴小芳[1] 朱予东[1] 王星久[1] 王天龙[1] 

机构地区：[1]华北电力大学能源动力与机械工程学院,河北保定071003

出　　处：《电力科学与工程》2011年第2期44-47,共4页Electric Power Science and Engineering

摘　　要：对阳泉煤焦进行了CO2气氛的气化热重实验,研究了煤焦的气化特性,并用不同的模型对样品进行了动力学分析。研究结果表明,随着升温速率的提高,煤焦的气化反应开始温度逐渐升高,反应的活化能逐渐降低。对于所选用模型,未反应收缩核模型更能描述阳泉煤的气化反应。In this paper,the TGA experiments of the gasification for Yangquan coal at CO2 atmosphere were carried out.The gasification characteristics of coal char were studied.The kinetics of the samples was analyzed using different models.The results show that： with the increasing heating rate,the onset temperature of gasification increases,the activation energy decreases.It found that the shrinking core model（SCM） is more accurate in describing the gasification of Yangquan coal char among the three models.

关 键 词：气化 热重分析 动力学 

分 类 号：TM619[电气工程—电力系统及自动化] TK16[动力工程及工程热物理—热能工程]