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甲苯液相催化氧化过程模拟与优化
引用本文:张玉坤,李初福,何小荣,陈丙珍.甲苯液相催化氧化过程模拟与优化[J].中国化学工程学报,2008,16(1):36-38.
作者姓名:张玉坤  李初福  何小荣  陈丙珍
作者单位:Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
摘    要:Liquid-phase oxidation of toluene with air has become the main technology for producing benzoic acid in a reactor at present. Based on the kinetic model of the toluene oxidation process obtained from laboratory and mass balance of key component, a novel model is established to simulate the industrial toluene oxidation process, in which the effects of benzaldehyde and benzyl alcohol are considered and the kinetic parameters are revised by industrial data. The simulation results show that the error of benzoic acid yield is within 3.5%. Based on the simulation model, to maximize the benzoic acid yield, an optimization model is proposed to optimize the operating parameters, including toluene feed-in mass flux and temperature. The optimization result indicates that on the allowable operating conditions the maximum benzoic acid yield obtained with the reaction temperature at 167.2 C an the mass flux at 104.1 t·h^- 1 is greater than the current one, which can be used to guide industrial reactor s operation.

关 键 词:toluene  benzoic  acid  catalytic  oxidation  simulation  optimization  
收稿时间:2007-04-28
修稿时间:2007-10-27

Simulation and Optimization in the Process of Toluene Liquid-phase Catalytic Oxidation
Yukun ZHANG, Chufu LI, Xiaorong HE,Bingzhen CHEN.Simulation and Optimization in the Process of Toluene Liquid-phase Catalytic Oxidation[J].Chinese Journal of Chemical Engineering,2008,16(1):36-38.
Authors:Yukun ZHANG  Chufu LI  Xiaorong HE  Bingzhen CHEN
Affiliation:Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
Abstract:Liquid-phase oxidation of toluene with air has become the main technology for producing benzoic acid in a reactor at present. Based on the kinetic model of the toluene oxidation process obtained from laboratory and mass balance of key component, a novel model is established to simulate the in dustrial toluene oxidation process, in which the effects of benzaldehyde and benzyl alcohol are considered and the kinetic parameters are revised by in-dustrial data. The simulation results show that the error of benzoic acid yield is within 3.5%. Based on the simula-tion model, to maximize the benzoic acid yield, an optimization model is proposed to optimize the operating pa-rameters, including toluene feed-in mass flux and temperature. The optimization result indicates that on the allow-able operating conditions, the maximum benzoic acid yield obtained with the reaction temperature at 167.2℃ and the mass flux at 104.1 t·h-1 is greater than the current one, which can be used to guide industrial reactor's operation.
Keywords:toluene  benzoic acid  catalytic oxidation  simulation  optimization
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