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Simulation of Distillation Processes with Reactions in Series

Xu Xien and Chen Hongfang (Department of Chemical Engineering, Tianjin University)   

  • Online:1987-06-25 Published:1987-06-25

具有连串化学反应的精馏过程的模拟

许锡恩,陈洪钫   

  1. 天津大学 ,天津大学

Abstract: A mathematical model and a subsequent algorithm, simulating reactive distillation processes are presented in this paper. The model takes into accountreactions in series that occur within a distillation column and the algorithm is worked out with block tridiagonal matrix technique. Suggested existences of offtridiagonal submatrices and/or submatrices on the border render the solution of the block tridiagonal matrix equation better general ised. This would be a helpful tool in design computation. It would also be useful for observing the effect of variation in flow configurations between stages on intermediate product yield. The saponii ication of propylene chloro-hydrin is illustrated to verify the employment of the presented method. Satisfactory results are obtained.

摘要: 本文介绍了能用来模拟具有化学反应的精馏过程的数学模型,并提出了计算方法.此模型考虑了塔内发生的连串化学反应.此计算方法是以块状三对角线矩阵技术为基础的.为完成设计计算和考察不同的级间流构型对中间产物收率的影响,改进了在块状三对角线外还有若干块状子矩阵和/或边矩阵存在时的更通用的矩阵方程求解方法.以氯丙醇皂化反应精馏生产环氧丙烷过程为例说明了此计算方法的正确性.结果是令人满意的.