Optimization of distillation column based on trust region algorithm

被引：0

作者：

Liu X. ^{[1
]}

Jia S. ^{[1
]}

Luo Y. ^{[1
]}

Yuan X. ^{[1
,2
]}

机构：

[1] School of Chemical Engineering and Technology, Tianjin University, Tianjin

[2] State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin

来源：

Huagong Xuebao/CIESC Journal | 2022年 / 73卷 / 05期

关键词：

Algorithm; Bypass efficiency model; Distillation; Optimization; Trust region;

D O I：

10.11949/0438-1157.20220036

中图分类号：

学科分类号：

摘要：

In this paper, a mixed integer nonlinear programming (MINLP) model for distillation columns optimization is established from the perspective of structural optimization. In order to eliminate integer variables, the bypass efficiency model is introduced to transform the MINLP problem into a nonlinear programming (NLP) problem. An optimization method is proposed to solve the NLP problem. In this method, the trust region optimization algorithm which commonly used in structural optimization is used and the pseudo-transient continuation model is used to assist the steady-state simulation in optimization. The optimization method proposed in this paper is used to optimize three distillation cases. All the cases can get satisfactory optimization results starting from different initial points. The results show that the proposed optimization method has good robustness and can still effectively solve the complex partial thermal coupling distillation process. The trust region algorithm also shows good convergence in the optimization of distillation column. © 2022, Editorial Board of CIESC Journal. All right reserved.

引用

页码：2031 / 2038

页数：7

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