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TU Berlin

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Publications

Following the links below you find a continuously updated publication list of our group. In order to have an overview of our current publications please visit d|b|t|a's page on ResearchGate: Fachgebiet Dynamik und Betrieb technischer Anlagen

Flow pattern identification for three-phase distillation with a nonequilibrium modeling
Zitatschlüssel Liang
Autor C. Liang and J.-U. Repke and S. Wang
Seiten 349-356
Jahr 2011
DOI 10.1002/apj.559
Journal Asia-Pacific Journal of Chemical Engineering
Jahrgang 6
Nummer 3
Zusammenfassung Abstract The fear of the uncertain vapor–liquid–liquid hydrodynamics has guided process engineers away from a three?phase involvement, of which the most uncertain is the flow pattern of the second liquid phase. Hence, a first?principle model?based estimation strategy was proposed to identify the flow pattern in the three?phase distillation. Representative experiments were performed in a laboratory?sclae packed column, and the results were sampled as reference data for the estimation. A dynamic nonequilibrium (NEQ) model was built up to consider the inter?phase mass transfer rigorously. The resulting estimation problem was then discretized using the multiple?shooting method, to formulate a large?scale NLP problem with a finite number of decision variables. The estimated results reveal that the flow pattern of the second liquid has a close relationship with the liquid and gas loads, and it could play a critical role for the variation of the separation efficiency inside a three?phase column. Copyright © 2011 Curtin University of Technology and John Wiley & Sons, Ltd.
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