焦炭-CO_2气化动力学的非等温热重法研究  

Non-isothermal thermogravimetric investigation on kinetics of coke gasification with CO_2

作　　者：刘忠锁[1,2] 汪琦[2] 邹宗树[1] 谭广雷[2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819 [2]辽宁科技大学材料与冶金学院,辽宁鞍山114051

出　　处：《钢铁研究》2010年第6期1-3,43,共4页Research on Iron and Steel

基　　金：国家自然科学基金资助项目(50974071)

摘　　要：利用Setsys Evolution同步热分析仪,以非等温热重法对焦炭-CO2气化动力学进行了研究。结果显示:当气化温度高于1 200K时,碳转化率和气化反应速率均显著增大;当气化温度达到1 500K左右时,焦炭的气化反应速率达到最大值。由相关系数可知,改良Coats-Redfern积分法是求取焦炭-CO2气化反应动力学参数的较好方法。鞍钢焦炭的活化能大于宝钢焦炭。宝钢焦炭的气化性能优于相同粒度的鞍钢焦炭。Kinetics of coke gasification with CO2 was investigated by non-isothermal thermogravimetry using Setsys Evolution simultaneous thermal analyzer.The results showed that when the gasification temperature is higher than 1 200 K,both of the carbon conversion rate and gasification reaction rate increase significantly.When the gasification temperature reaches about 1 500 K,the gasification reaction rate attains the maximum.According to the correlation coefficients,improved Coats-Redfern integral me-thod is the better method to calculate gasification kinetics parameters.The activation energy of Ansteel coke is greater than that of Baosteel coke.The gasification performance of Baosteel coke is better than that of Ansteel coke with the same particle size.

关 键 词：焦炭 气化 动力学 非等温热重法 CO2 

分 类 号：TF55[冶金工程—钢铁冶金]