[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/Unit :
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
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
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