Coalescence Modelling for Design of Technical Equipment

coalescence; drop-drop interaction; drop-interface interaction; film drainage; liquid-liquid dispersion; modelling; phase separation; solvent extraction

Abstract :

[en] A coalescence model in the context of the ReDrop concept (Representative Drops) is proposed to design technical equipment for separating liquid-liquid dispersions in settlers or extraction columns. A fundamental study of drop interactions has been performed to obtain the complete picture of coalescence. The model proposed accounts for collision frequency of the drops, bouncing probability, and coalescence probability, for which the film-drainage approach is applied. The model proposed allows to consider the appropriate formulation for different types of equipment. Especially noteworthy is that the coalescence probability fundamentally differs from the expression of Coulaloglou and Tavlarides, which is frequently used, but which shows inconsistencies at fundamental level.

Research center :

Department of Chemical Engineering, PEPs - Products, Environment, and Processes

Disciplines :

Chemical engineering

Author, co-author :

Leleu, David ; Université de Liège - ULiège > Department of Chemical Engineering > PEPs - Products, Environment, and Processes

Pfennig, Andreas ; Université de Liège - ULiège > Department of Chemical Engineering > PEPs - Products, Environment, and Processes

Language :

English

Title :

Coalescence Modelling for Design of Technical Equipment

Publication date :

2019

Journal title :

Chemical Engineering and Technology

ISSN :

0930-7516

eISSN :

1521-4125

Publisher :

Wiley - VCH Verlag GmbH & Co., Germany

Volume :

Issue :

Pages :

1404-1413

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://doi.org/10.1002/ceat.201900037

Name of the research project :

ERICAA

Funders :

Federal Ministry for Economic Affairs and Energy of Germany, project number: 01168585/1, in the context of the ERICAA project
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]

Available on ORBi :

since 19 June 2019

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