Development of Analytical Models for a Reactive Distillation Process with a Rate-Based Model

使用基于速率的模型开发反应蒸馏过程的分析模型

基本信息

批准号：
18560720
负责人：
MORI Hideki
金额：
$ 1.59万
依托单位：
Nagoya Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

项目摘要

In order to develop the model ft reactive distillation process the following research topics have been done.1. Development of Simulation Program for Analyzing Reactive Distillation Column with Rate-Based ModelThe program consists of segmentwise calculation by solving material and heat balance equations with mass and heat transfer equations at the vapor-liquid interface. Reaction term is included in the material balance equation for the bulk liquid.2. Improvement of Mass Transfer Coefficient CorrelationExperimental data using structured packing of surface area, 250 m2/m3 and 350 m2/m3 are used to correlate the mass transfer coefficient and effective interface area. The equations proposed by Bravo, et. al. for mass transfer coefficient and by Henriques de Brito, et. al. for effective interfacial area are employed to improve their accuracy. The optimized parameters show the importance of estimating the effective interfacial area.3. Comparison of Simulation Results with Experiments using Oldershaw ColumnAn Oldershaw column with seven sieve trays is used for total reflux reactive distillation experiments. The simulation program is developed based on transient mass and heat balance equations and those equations are numerically integrated to obtain distillation curves of batch reactive distillation. It shows the necessity of improving rate equations.4.Study on Reaction Kinetics of Ethyl acetate SynthesisA reaction kinetic of non-catalytic esterification is determined from the batch reactor experiments. Using the determined rate equation the simulation predicts the liquid composition change of the still with better accuracy.

为了建立ft反应精馏过程模型，进行了以下研究： 1．开发基于速率的模型分析反应蒸馏塔的模拟程序该程序包括通过求解材料和热平衡方程以及汽液界面处的质量和传热方程进行分段计算。反应项包含在本体液体的物质平衡方程中。2．传质系数相关性的改进使用表面积规整填料、250 m2/m3 和 350 m2/m3 的实验数据来关联传质系数和有效界面面积。 Bravo 等人提出的方程。等人。传质系数由 Henriques de Brito 等人提出。等人。采用有效界面面积来提高其准确性。优化后的参数显示了估计有效界面面积的重要性。 3．模拟结果与使用 Oldershaw 塔的实验的比较具有七个筛板的 Oldershaw 塔用于全回流反应精馏实验。模拟程序是基于瞬态质量和热平衡方程开发的，并对这些方程进行数值积分以获得间歇反应精馏的精馏曲线。说明了改进速率方程的必要性。4.乙酸乙酯合成反应动力学研究通过间歇反应器实验确定了非催化酯化反应动力学。使用确定的速率方程，模拟可以更准确地预测蒸馏器的液体成分变化。