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Prediction of drop sizes for liquid–liquid systems in stirred slim reactors—Part I: Single stage impellers

Maaß, Sebastian ; Metz, Florian ; Rehm, Torsten ; Kraume, Matthias

Chemical engineering journal (Lausanne, Switzerland : 1996), 2010-08, Vol.162 (2), p.792-801 [Periódico revisado por pares]

Oxford: Elsevier B.V

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Título:
Prediction of drop sizes for liquid–liquid systems in stirred slim reactors—Part I: Single stage impellers
Autor: Maaß, Sebastian ; Metz, Florian ; Rehm, Torsten ; Kraume, Matthias
Assuntos: Applied sciences ; Chemical engineering ; Drop size prediction ; Exact sciences and technology ; Liquid/liquid dispersion ; Mixing ; Organic polymers ; Physicochemistry of polymers ; Polymerization ; Population balance equation ; Power input and baffling effect ; Preparation, kinetics, thermodynamics, mechanism and catalysts ; Reactors ; Slim reactors
É parte de: Chemical engineering journal (Lausanne, Switzerland : 1996), 2010-08, Vol.162 (2), p.792-801
Descrição: Although investigations in the field of stirred liquid/liquid dispersions have a long history, new questions are still emerging in dealing with the different aspects of industrial applications, such as suspension polymerizations. In this study the influence of physical parameters on drop size and power consumption, like liquid level, stirrer speed, stirrer height and baffle length, were experimentally analyzed. The results were used to determine modeling approaches which are capable of displaying the influence of the named parameters. It was shown that the energy law ( d p ∼ ɛ −0.4; Shinnar, 1961 [1]) using the average energy dissipation only roughly predicts the Sauter mean diameter. The population balance equation (PBE) used with a one-zone modeling approach is slightly better in its prediction of results. Very satisfying predictions were obtained by using the PBE with a two-zone model. The overall deviations between calculated and predicted Sauter mean diameter was less than 10% using this approach. Only the successful prediction of the influence of the baffle length remained unattainable, even with the PBE two-zone model.
Editor: Oxford: Elsevier B.V
Idioma: Inglês

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Prediction of drop sizes for liquid–liquid systems in stirred slim reactors—Part I: Single stage impellers

Maaß, Sebastian ; Metz, Florian ; Rehm, Torsten ; Kraume, Matthias

Oxford: Elsevier B.V

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