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Shortcut Method for Initialization of Dividing‐Wall Columns and Estimating Pareto‐Optimal NQ ‐Curves
Author(s) -
Ränger Lena-Marie,
Grützner Thomas
Publication year - 2021
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.202100256
Subject(s) - initialization , column (typography) , heuristic , diagram , mathematical optimization , pareto principle , computer science , pareto optimal , stage (stratigraphy) , mathematics , algorithm , multi objective optimization , geometry , geology , paleontology , connection (principal bundle) , programming language , database
In early project stages, often no simulation results are available for dividing‐wall columns. Hence, shortcut methods are used to estimate suitable vapor and liquid splits. In a previous paper, it was demonstrated thatV ·mindiagrams are a suited tool to satisfy this need. However, it has turned out that it shows weaknesses for columns with finite or non‐optimal stages. This contribution closes that gap and presents an extended approach to derive suited initial guesses. For this purpose, the originalV ·mindiagram is combined with a heuristic approach to calculate Pareto‐optimal column designs resulting in a stage‐adaptedV ·mindiagram. A comparative study illustrates that the new approach is a powerful tool to generate reliable guesses for multiple dividing‐wall column simulations with finite stage numbers.