文献类型：期刊文献

中文题名：脱油沥青气化副产炭黑CO_(2)气化反应性与动力学研究

英文题名：Study on CO_(2) Gasification Reactivity and Kinetics of Black Carbon Produced by Gasification of Deoiled Asphalt

作者：王振海[1];仇鹏[1];沈中杰[1];代正华[1,2];王辅臣[1]

机构：[1]华东理工大学资源与环境工程学院,上海煤气化工程技术研究中心,上海200237;[2]新疆大学化工学院,乌鲁木齐830046

年份：2021

卷号：44

期号：6

起止页码：1

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2020】；CSCD:【CSCD2021_2022】；

基金：新疆生产建设兵团南疆重点产业创新发展支撑计划项目(2019DB002);上海市优秀技术带头人项目(19XD1434800);国家自然科学基金资助项目(21776087).

语种：中文

中文关键词：副产炭黑;CO_(2)气化;两步动力学;活化能;超声处理

外文关键词：black carbon;CO_(2)gasification;two-step dynamics;activation energy;ultrasonic treatment

摘要：采用常压热重分析仪研究了升温速率对副产炭黑CO_(2)气化反应性的影响,利用Friedman法求解了气化动力学参数,研究了副产炭黑超声处理前后的气化反应活性,并与神华煤的气化反应活性进行了对比。结果表明:副产炭黑CO_(2)气化反应过程由于存在不同的气化反应机理,其反应速率随温度的变化曲线呈双峰结构。副产炭黑的整个气化反应过程为两步动力学反应:第一步是转化率低于0.6时的反应,活化能为(174.8±15.7)kJ/mol,主要是与炭黑内部无定形碳的反应;第二步是转化率高于0.6时的反应,活化能为(229.1±16.1)kJ/mol,主要是与炭黑石墨外壳的反应。副产炭黑的气化活性低于神华煤的气化活性,对副产炭黑进行超声处理后,其平均气化反应速率提高了约0.27倍,最大气化反应速率提高了约0.4倍,综合性能指数显著提高,气化反应性能明显改善。
The atmospheric pressure thermogravimetric analyzer was used to study the influence of the heating rate on the gasification reactivity of black carbon in the CO_(2) atmosphere,and the gasification kinetic parameters was sloved by Friedman method.The gasification reaction activities of black carbons before and after the ultrasonic treatment were studied and compared with Shenhua coal.The results show that the gasification reaction process of black carbon in the CO_(2) atmosphere has a bimodal structure due to different gasification reaction mechanisms.The whole gasification process of the black carbon is a two-step kinetic reaction.The first step is the reaction before the conversion rate reaches 0.6.The activation energy of this step is(174.8±15.7)kJ/mol,which is mainly the reaction with the internal amorphous carbon of the black carbon.The second step is the reaction after the conversion rate reaches 0.6.The activation energy of this step is(229.1±16.1)kJ/mol,which is mainly the reaction with the graphite shell of the black carbon.The gasification activity of black carbon is lower than that of Shenhua coal.After the ultrasonic treatment of the black carbon,its average gasification reaction rate is increased by about 0.27 times,and the maximum gasification reaction rate is increased by about 0.4 times.The comprehensive performance index of the black carbon after the ultrasonic treatment is significantly improved,and its gasification reaction performance is significantly improved.