催化学报

催化学报 ›› 2011, Vol. 32 ›› Issue (3): 446-450.DOI: 10.1016/S1872-2067(10)60180-5

• 研究论文 • 上一篇    下一篇

反映工艺条件对管式反应器催化反应影响的转化率方程

李巧灵 1, 张元华 1, 陈世萍 1, 方维平 1,2, 杨意泉 1,2   

  1. 1 厦门大学化学化工学院化工系, 福建厦门 361005; 2 厦门大学化学化工学院化学系醇醚酯清洁生产国家工程实验室, 福建厦门 361005
  • 收稿日期:2010-10-23 修回日期:2010-12-22 出版日期:2011-03-04 发布日期:2014-08-01

Development of a Novel Conversion Equation as a Function of Catalytic Reaction Conditions in Tubular Reactors

LI Qiaoling1, ZHANG Yuanhua1, CHEN Shiping1, FANG Weiping1,2,* and YANG Yiquan1,2,#   

  1. 1Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China; 2Department of Chemistry, College of Chemistry and Chemical Engineering and National Engineering Laboratory for Green Chemical Production of Alcohols, Ethers and Esters, Xiamen University, Xiamen 361005, Fujian, China
  • Received:2010-10-23 Revised:2010-12-22 Online:2011-03-04 Published:2014-08-01

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摘要： 根据幂指函数的特点, 借用“虚拟反应组分”和“变动级数”的概念, 提出了管式反应器系统中反应转化率与工艺条件的关系式. 为了验证该转化率方程的普适性, 考察了二乙苯催化脱氢、乙苯加氢和噻吩加氢脱硫等, 并利用 Matlab 软件分别对这三个催化体系的实验数据进行拟合. 结果表明, 此方程在较宽的范围内均能很好地反映温度、反应压力、空速和物料比对转化率的影响. 预测结果与实验数据之间的总平均相对偏差均小于 2%, 说明该方程并不是针对某一特定的催化反应或催化剂, 可用于大多数的管式反应器催化反应系统中. 关键词：转化率方程; 反应动力学; 加氢; 脱氢; 加氢脱硫; 阿伦尼乌斯法则

关键词: 转化率方程, 反应动力学, 加氢, 脱氢, 加氢脱硫, 阿伦尼乌斯法则

Abstract: A comprehensive conversion equation was developed to simulate the catalytic reaction conditions (include temperature, pressure, residence time, and reaction composition) in tubular reactors: . This conversion equation is based on the characteristics of the power-exponential function  as well as the “variable reaction order” and “virtual reactant” concepts. Its validity was verified by fitting experiment data from three different catalytic systems such as the dehydrogenation of diethyl benzene, the hydrogenation of ethylbenzene, and the hydrodesulfurization of thiophene. The results show that the influences of reaction temperature, pressure, residence time, and reactant composition on the conversion of the reactant can be determined within a wide range of values. By comparison with the experimental data, the calculated conversions were all found to have a total average relative deviation of less than 2%. This suggests that the conversion equation is not limited to a specific catalyst system but could be suitable for various catalyst systems in tubular reactors.

Key words: conversion equation, reaction kinetics, hydrogenation, dehydrogenation, hydrodesulfurization, Arrhenius law