半间歇搅拌釜式乙氧基化反应器的数学模拟.pdfVIP

学兔兔 化 工 进 展 2009年第28卷第5期 CHEMICAL INDUSTRY AND ENGINEERING PROGRESS ·773· 半间歇搅拌釜式乙氧基化反应器的数学模拟 安维中 ，李 佳 ，董凤蕾1胡仰栋 ，刘兆滨2朱建民 ( 中困海洋大学化工学院，山东 青岛266100： 辽宁奥克化学集团，辽宁 辽阳 111003) 摘 要：以KOH催化条件下乙二醇乙氧基化为例，建立了工业规模的、同时考虑动力学、气液平衡、气液传质、 反应体积变化和惰性气体氮气影响等的半间歇搅拌釜式乙氧基化反应器的数学模型。通过数学模拟考察了环氧乙 烷进料速率对反应器操作的影响，得到安全限制下适宜的环氧乙烷进料速率。在此基础上，模拟得到反应器中压 力、环氧乙烷在气液相中的组成及乙氧基化产物随时间的分布，并同工业试验数据进行了比较。结果表明了模型 的可靠性。 关键词：乙氧基化；半间歇反应器；环氧乙烷；模拟 中图分类号：TQ 223．24；TQ 021．8 文献标识码：A 文章编号：1000—6613(2009)05—0773—06 Mathematical simulation of semi-batch stirred ethoxylation reactor ANWeizhong ， ，DONGFenglei ，HUYangdong ，LIUZhaobin ，ZHUJianmin (。Department ofChemic~Engineering，Ocean University ofChina，Qingdao 266100，Shandong，China；2Liaoning Oxiranchem Group，Liaoyang 111003，Liaoning，China) Abstract：The modeling of industrial semi—batch stirred ethoxylation reactor was developed by taking ethylene glycol ethoxylation process catalyzed by KOH as example．The model took the kinetics， vapor-liquid equilibrium．vapor-liquid mass．transfer,variation of reactive volume，as well as the effect of inert gas nitrogen on the reactor into account．Based on the developed model，simulations were performed to investigate the effect of ethylene oxide(EO)feed flow rate on the reactor performance，so as to obtain the suitable EO feed flow rate within safety 1imits．The simulation results provided the typical dynamic profiles of the reactor pressure，the molar fraction of ethylene oxide in liquid and vapor, as well as the ethoxylated oligomer distributions．Simulation results were compared with the industrial experiment data，which showed the reliability of the deve