Optimal Design Refinements to Accommodate HEN Cleaning Schedules

Bo Jyun Liao, Kuang Ting Yi, Chuei Tin Chang

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

Due to severe fouling in the heat-transfer units, the target temperatures of process streams in a heat exchanger network (HEN) may not always be achievable after a sufficiently long period of operation. To circumvent this practical problem, the conventional cost-optimal HEN design should be modified to accommodate online cleaning operations via proper allocation of area margins, bypasses, spares, and auxiliary heaters/coolers. For the purpose of facilitating solution convergence of the corresponding optimization problem, the candidate units for incorporating margins and the corresponding bypasses are identified on the basis of test runs in this study and, also, extra constraints on the spares formulated according to a set of heuristic rules to further reduce the search space. A solvable MINLP model can then be constructed by including these test findings and heuristic constraints. From the optimum solution, one could then obtain the proper refinements to any given design to facilitate implementation of an optimal cleaning schedule. Finally, the optimization results of extensive case studies are also presented in this article to demonstrate the feasibility and effectiveness of the proposed approach.

原文English
頁(從 - 到)997-1013
頁數17
期刊Industrial and Engineering Chemistry Research
57
發行號3
DOIs
出版狀態Published - 2018 1月 24

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 化學工程 (全部)
  • 工業與製造工程

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