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 limits. 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 developed mathematical model.

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。