丙烯腈尾气协同脱除多段组合催化动力学研究及CFD模拟  

Kinetic study and CFD simulation on multi-stage catalytic removal of the exhaust gases from acrylonitrile plant

作　　者：陈祥树 魏莹 王子春 张润铎[1,2] Xiangshu Chen;Ying Wei;Zichun Wang;Runduo Zhang(State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China)

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室,北京100029 [2]北京化工大学能源环境催化北京市重点实验室,北京100029

出　　处：《中国科学：化学》2019年第8期1125-1134,共10页SCIENTIA SINICA Chimica

基　　金：国家自然科学基金(编号:U1862102);中央高校基本科研业务费(编号:XK1802-1,JD1819)资助项目

摘　　要：本文通过筛选出几种适用于不同气体脱除的最佳催化剂及明确催化剂最优组合顺序,采用固定床微型反应器进行丙烯腈尾气催化燃烧试验考察,获得本征动力学数据,并对动力学数据的可靠性进行计算验证;采用CFD数值模拟软件建立多孔介质二维数学模型,在实际工业废气条件下,对废气组分催化燃烧反应进行模拟,分析操作参数对废气催化燃烧特性的影响.通过模拟获得丙烯腈尾气脱除的最佳操作条件(流速:<30000 h-1,入口温度:>623 K,组分摩尔比:>10:1,催化剂床层孔隙率:~0.7);在该最佳操作条件下,对两段式催化反应器进行模拟,得到了压降和绝热温升等反应器参数.The optimal catalyst was selected and the combination sequence of different catalysts for the catalytic combustion of acrylonitrile-containing exhaust gases in a fixed-bed microreactor were detected. The intrinsic kinetic data were obtained, and their reliability were verified. The CFD simulation software established a two-dimensional mathematical model of porous material under real industrial conditions, the catalytic combustions of the exhaust gaseous components were simulated, and the effect of operating parameters on the catalytic combustion characteristics of exhaust gases were analyzed. The optimal operating conditions for the removal of acrylonitrile-containing exhaust were obtained by simulation and data analysis(flow rate:< 30000 h-1, inlet temperature:>623 K, composition molar ratio:>10:1, porosity of catalytic bed porosity:~0.7). Under the optimal operating conditions, the simulation of the two-stage catalytic reactor was carried out to obtain reactor parameters such as pressure drop and adiabatic temperature rise.

关 键 词：丙烯腈尾气 多孔介质 CFD模拟 催化燃烧 

分 类 号：O643.36[理学—物理化学] X783[理学—化学]