文献类型：期刊文献

中文题名：非均相催化精馏过程的模拟计算

英文题名：Simulation Procedure for Distillation with Heterogeneous Catalytic Reaction

作者：张瑞生[1];韩英[1];U.Hoffmann[2]

机构：[1]华东化工学院;[2]克劳斯塔尔工业大学

年份：1989

卷号：40

期号：6

起止页码：693

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：非均相;催化精馏;数学模型;填料塔

摘要：提出了多组分非均相催化精馏过程的数学模型.该微分方程组的边值是未知的,但受全塔总物料衡算方程的约束,模型的求解是一个困难的边值问题.借助于多用标打靶法和Newton-Raphson迭代,本文提出了模型的有效解法.提出的算法亦适用于在填料塔内进行的非催化反应精馏过程.计算结果与实验数据的一致性令人满意.
In this paper a packed column model is developed for distillation of mul-ticomponent mixtures with simultaneous heterogeneous catalytic reaction. As the boundary conditions of the differential equation system are unknown, but restricted by the material balance of the whole column, its solution becomes a difficult boundary value problem. By applying the multishooting method and Newton-Raphson iteration procedure, an effective algorithm for the solution of the model is developed. The whole packed bed is divided into several sections. Mole fractions of the liquid phase at interfaces of these sections xij, mole flow rates profile of the Vapour phase V(z) and reaction rates in these sections Rj are chosen as iterative variables. An inner loop and an outer loop are involved. The inner loop is for xij, Rj and the outer loop is for V(z). A rapid ands table convergence is finally achieved. The proposed simulation algorithm is also applicable for distillation with simultaneous non-catalytic reaction. Theoretical predictions are compared with experimental results, and good agreement is obtained.