节点文献

在碱金属催化作用下煤焦与CO₂的气化反应

Gasification Reaction of Coal Char with CO₂ Under the Catalytic Action of Alkali Metals

推荐 CAJ下载
PDF下载
不支持迅雷等下载工具，请取消加速工具后下载。

【Author】 PANG Ke-liang~1,XIANG Wen-guo~1,LIANG Cai~1,ZHAO Chang-sui~1,XI Bai~2,LIU Dong-jie~3(1.MOE’s KEY Lab of Clean Power Generation and Combustion Technology,Southeast University,Nanjing 210096,China;2.School of Chemical Engineering,Anshan University of Science & Technology,Anshan 114044,China;3.Anshan Steel Group’s General Chemical Plant,Anshan 114001,China)

【机构】东南大学洁净煤发电及燃烧技术教育部重点实验室；鞍山科技大学化学工程学院；鞍钢集团化工总厂南京210096；南京210096；鞍山114044；鞍山114001；

【摘要】利用固定床实验装置、以CO2作为气化剂,进行煤焦气化反应动力学的研究,分析了碱金属的含量及气化温度对煤焦-CO2气化反应的影响。采用未反应核收缩模型对试验数据进行处理,得到气化反应动力学参数。发现气化温度对煤焦与CO2的气化反应影响显著,碱金属作为煤焦-CO2气化反应的催化剂,能够降低反应过程的活化能,提高反应速率,用未反应核收缩模型能够很好地描述煤焦-CO2的气化反应过程。图9表3参8更多还原

【Abstract】 The kinetics of gasification reaction of coal char,with CO₂ serving as the gasifying agent,has been studied in a fixed bed test rig and the effect of alkali metal content,as well as that of temperature,on the reaction investigated.The test data were processed with a reactionless core-shrinking model to obtain the kinetic parameters of the gasification reaction.It was discovered that the gasification temperature has a marked effect on the gasification reaction of coal char in the presence of CO₂ and that alkali metals,serving as a catalysts,reduce the activation energy of the reaction,but simultaneously enhancing the reaction rate.The coal char-CO₂ gasification reaction can very well be indicated by the reactionless core-shrinking model.Figs 9,tables 3 and refs 8.更多还原