催化学报

催化学报 ›› 2010, Vol. 31 ›› Issue (8): 999-1005.DOI: 10.1016/S1872-2067(10)60100-3

• 研究论文 • 上一篇    下一篇

间歇反应器内醋酸丁酯酯化反应与渗透汽化集成过程的模型计算

邹昀1, 童张法1, 刘琨1, 冯献社2   

  1. 1广西大学化学化工学院, 广西南宁530004 2滑铁卢大学化工系, 加拿大安大略省滑铁卢N2L 3G1
  • 收稿日期:2010-04-13 出版日期:2010-08-30 发布日期:2013-12-26
  • 通讯作者: 冯献社

Modeling of Esterification in a Batch Reactor Coupled with Pervaporation for Production of n-Butyl Acetate

ZOU Yun1, TONG Zhangfa1,*, LIU Kun1, FENG Xianshe2   

  1. 1School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, China; 2Department of Chemical Engineering, University of Waterloo, Waterloo N2L 3G1, Ontario, Canada
  • Received:2010-04-13 Online:2010-08-30 Published:2013-12-26

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984

被引次数

3

摘要： 建立了一个间歇反应器内酯化反应与渗透汽化集成过程的数学模型, 用于描述反应和脱水同时进行的过程. 该模型考虑了反应体系中所有组分的渗透量影响以及混合物的非理想热力学行为. 选择乙酸和正丁醇生成醋酸丁酯的酯化反应与 PVA 膜渗透汽化集成过程为研究体系, 将模型结果与文献中已报道的实验数据进行对比, 验证了该模型的有效性. 结果表明, 采用渗透汽化脱除酯化反应的水分将提高酯的产率. 对温度、反应物初始比、膜面积与反应体积比以及催化剂浓度几种操作条件对集成过程性能影响进行了参数的分析. 根据结果讨论得到该膜过程与反应集成过程的优化操作条件.

关键词: 渗透汽化, 酯化反应, 渗透, 集成过程, 集成因子

Abstract: A mathematical model for esterification in a batch reactor coupled with pervaporation to describe a simultaneous reaction and water removal from the reactor was developed. The permeation of all components in the reaction mixture and their non-ideal thermodynamic behavior were taken into account. The esterification of acetic acid with n-butanol for the production of n-butyl acetate integrated with a poly(vinyl alcohol) pervaporation membrane was selected as the model system for this study. The validity of the model was tested by comparing the calculated results with experimental data reported in the literature. The results show that the esterification is facilitated by water removal using pervaporation, which accelerates the rate of ester formation. A parametric study was carried out to evaluate the effects of operating conditions on the performance of the pervaporation-coupled esterification reactor and this included temperature, initial composition of the reactants, membrane area relative to the reactor’s size, and catalyst concentration. Based on these results, suitable operating conditions for the mem-brane-integrated reaction process are discussed.

Key words: pervaporation, esterification, permeation, integrated process, coupling factor