义马煤焦CO2气化反应性研究  

CO_2 GASIFICATION REACTIVITY OF YIMA COAL CHAR AT ELEVATED TEMPERATURE

作　　者：谷小虎[1,2] 曹敏[1,3] 王兰甫 张爱民 

机构地区：[1]河南理工大学材料科学与工程学院,河南焦作硕士生454000 [2]义马煤业集团股份有限公司,河南义马472300 [3]义马煤业集团股份有限公司博士后工作站,河南义马博士后472300

出　　处：《煤炭转化》2009年第3期6-8,共3页Coal Conversion

基　　金：义马煤业集团有限公司2008年重点科研项目(2008018)

摘　　要：运用等温热重技术,以CO2为气化剂,在常压和1000℃～1300℃温度范围内,考察了义马煤焦的气化反应性.结果表明,随着气化温度的提高,义马煤焦的反应性和反应速度呈现出增加的趋势,但在灰熔融温度附近出现不同的情况.碳还原率为50%时,1000℃～1100℃和1100℃～1300℃的气化反应活化能分别为140.97kJ/mol与20.84kJ/mol.The CO2 gasification reactivity of Yima coal char were investigated by an isothermal thermo-gravimetric analysis at ambient pressure and at temperatures from 1 000℃ to 1 400℃. The results showed that general gasification reactivity and reaction of chars increased with gasification temperature, but some different phenomenon appeared near coal ash fusion point. When conversion was 50%, the average apparent activation energies of chars respectively were 224.03 kJ/mol and 31.47 kJ/mol at 1 000 ℃-1 100℃ and 1 100℃-1 300℃. KEY WORDS Yima coal char, isothermal thermo-gravimetric analysis, gasification reactivity

关 键 词：义马煤焦 等温热重分析 气化反应性 

分 类 号：TQ541[化学工程—煤化学工程]