CIESC Journal ›› 2023, Vol. 74 ›› Issue (2): 796-806.DOI: 10.11949/0438-1157.20221352

• Process system engineering • Previous Articles     Next Articles

Synthesis of heat-integrated distillation sequences with intermediate heat exchangers

Haiou YUAN1(), Fangjun YE1(), Shuo ZHANG1, Yiqing LUO1,2,3(), Xigang YUAN1,2,3   

  1. 1.School of Chemical Engineering and Technology, Tianjin University, Tianjin 300354, China
    2.Chemical Engineering Research Center, Tianjin University, Tianjin 300354, China
    3.State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300354, China
  • Received:2022-10-12 Revised:2022-12-07 Online:2023-03-21 Published:2023-02-05
  • Contact: Yiqing LUO


袁海鸥1(), 叶方俊1(), 张硕1, 罗祎青1,2,3(), 袁希钢1,2,3   

  1. 1.天津大学化工学院,天津 300354
    2.天津大学化学工程研究所,天津 300354
    3.化学工程联合国家重点实验室,天津 300354
  • 通讯作者: 罗祎青
  • 作者简介:袁海鸥(1997—),女,硕士研究生,
  • 基金资助:


This study addressed the synthesis problem of distillation sequences considering intermediate heat exchanger (IHE). Using the stochastic optimization strategy, a new method was proposed to synthesize heat-integrated distillation sequences with intermediate heat exchanger (IHE-HIDSs). The binary variables 0/1 are introduced to define whether the IHE is used in the corresponding merge point of two separation tasks in one distillation column. In this way, the synthesis problem is formulated as an implicit mixed-integer nonlinear programming (MINLP) problem, and could be solved by using the hybrid simulated annealing and particle-swarm optimization (SA-PSO) algorithm with the goal to minimize the total annual cost (TAC) of the distillation process. To illustrate the proposed method, two distillation sequence syntheses of five-component alcohols and five-component alkanes were investigated. The results show that IHE-HIDS has a lower TAC than the distillation sequence considering both thermal coupling and energy integration. In addition, the method proposed in this paper can obtain multiple separation sequence solutions with high probability in a reasonable computational time.

Key words: optimization, distillation, algorithm, intermediate heat exchanger, energy integration, sequential synthesis



关键词: 优化, 蒸馏, 算法, 中间换热器, 能量集成, 序列合成

CLC Number: