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Thermodynamic efficiency of membrane‐assisted distillation processes
Citation Link: https://doi.org/10.15480/882.7030
Publikationstyp
Journal Article
Publikationsdatum
2023-06
Sprache
English
Enthalten in
Volume
69
Issue
6
Start Page
1
End Page
17
Article Number
e18015
Citation
AIChE Journal 69 (6): e18015 (2023-06)
Publisher DOI
Scopus ID
Publisher
John Wiley & Sons, Inc.
Membrane processes are considered as comparably mild separation processes offering the potential for significant energy savings compared with azeotropic distillation processes. Despite higher investment and material costs, they are of particular interest for improving the energy efficiency in the chemical industry. However, energy savings of more than 20%–30% are rarely reported and even a general superiority can be disputed. To further elucidate this controversial, the current study pursues a quantitative assessment of the thermodynamic efficiency of pervaporation and vapor permeation processes with stand‐alone distillation and hybrid membrane‐assisted distillation processes for the separation of azeotropic mixtures. The results confirm the case‐dependent potential of distillation processes to outperform membrane‐assisted separations in terms of energy efficiency, considering proper heat integration. Although energy efficiency is becoming significantly important, it should be considered in the context of economic performance to determine an optimal trade‐off and to select the best process alternative during conceptual process design.
Schlagworte
exergy analysis
optimization
pervaporation
thermodynamic efficiency
vapor permeation
DDC Class
621: Applied Physics
Publication version
publishedVersion
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