一个半间歇催化蒸馏塔的动态模型及模拟  

Dynamic modeling and simulation for a semi-batch catalytic distillation column

作　　者：安维中[1] 于凤娟[1] 胡仰栋[1] 周立明 刘兆滨 朱建民 

机构地区：[1]中国海洋大学化学化工学院,山东青岛266100 [2]辽宁奥克化学集团,辽宁辽阳111003

出　　处：《化工学报》2009年第1期187-192,共6页CIESC Journal

基　　金：辽宁省科学技术攻关计划项目(JH2/01-ZT102-04)

摘　　要：提出以环氧乙烷和正丁醇为原料,应用催化蒸馏法制乙二醇单丁醚的新工艺。建成一个中试规模的催化蒸馏塔,提出一种基于安全考虑的半间歇操作试验方案。建立了催化蒸馏塔的动态数学模型,通过模拟考察了环氧乙烷进料速率对反应物转化率和单醚选择性的影响,得到优化的操作条件。在此基础上,通过模型和模拟分析了塔内温度、汽液相流量及组分组成的动态分布特性,并与试验结果进行了比较。研究表明了模型和模拟方法的可靠性,同时表明了催化蒸馏制乙二醇单丁醚的优越性。A new application of catalytic distillation （CD） for the production of ethylene glycol monobutyl ether （EGMBE） from ethylene oxide （EO） and n-butanol was developed. A pilot-scale CD column was built up, which was operated in a semi batch mode for safety consideration. A dynamic model was developed for the description of the semi batch CD process. Simulations were performed to investigate the effect of feed flow rate of EO on conversion of reactants and selectivity toward EGMBE, so as to obtain the optimal and safe operating conditions. The simulation provided the typically dynamic profiles of the liquid and vapor flow rates, compositions and temperature, which were compared with the experimental data. The results obtained indicated the model developed was reasonable, and also the potential advantage of using CD for the production of EGMBE.

关 键 词：催化蒸馏 半间歇 乙二醇单丁醚 动态模型 模拟 

分 类 号：TQ223.24[化学工程—有机化工] TQ021.8