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Synthesis of flexible inter-plant heat exchanger networks:A decomposition method considering intermedium fluid circles

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Synthesis of flexible inter-plant heat exchanger networks:A decomposition method considering intermedium fluid circles
The traditional methods for synthesizing flexible heat exchanger networks(HENs)are not directly applicable to inter-plant HEN challenges,primarily due to the spread of system uncertainty across plants via intermedium fluid circles.This complicates the synthesis process significantly.To tackle this issue,this study proposes a decomposed stepwise methodology to facilitate the flexible synthesis of the inter-plant HENs performing indirect heat integration.A decomposition strategy is proposed to divide the overall network into manageable sub-networks by dissecting the intermedium fluid circles.To address the variability in intermedium fluid temperatures,a temperature fluctuation analysis approach is developed and a heuristic rule is introduced to maintain the temperature feasibility of the intermedium fluids.To ensure adequate flexibility and cost-effectiveness of the designed networks,flexibility analysis and network retrofit steps are conducted through model-based optimization techniques.The efficacy of the method is demonstrated through two case studies,showing its potential in achieving the desired operational flexibility for inter-plant HENs.

Inter-plant heat exchanger networks(HENs)Indirect heat integrationFlexible synthesisFlexible analysisDecomposition method

Ran Tao、Siwen Gu、Linlin Liu、Jian Du

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Institute of Process Systems Engineering,School of Chemical Engineering,Dalian University of Technology,Dalian 116023,China

School of Photoelectric Engineering,Changzhou Institute of Technology,Changzhou 213032,China

Inter-plant heat exchanger networks(HENs) Indirect heat integration Flexible synthesis Flexible analysis Decomposition method

2024

10.1016/j.cjche.2024.06.024

中国化学工程学报(英文版)
中国化工学会

中国化学工程学报(英文版)

CSTPCDEI
影响因子：0.818
ISSN：1004-9541
年,卷(期)：2024.75(11)