Theobald, DW, Hanson, B orcid.org/0000-0002-1720-1656, Fairweather, M et al. (1 more author) (2020) Implications of hydrodynamics on the design of pulsed sieve-plate extraction columns: A one-fluid multiphase CFD model using the volume of fluid method. Chemical Engineering Science, 221. 115640. ISSN 0009-2509
Abstract
Presented is a detailed assessment of dispersive mixing and turbulence characterisation of an industrially representative pulsed sieve-plate extraction column (PSEC) obtained using multiphase CFD modelling. The system consists of a 150 mm diameter column with two perforated plates dispersing a 30 vol% dodecane/tributyl phosphate mixture in 3 M nitric acid. Operational conditions were chosen to examine pseudo steady-state dispersion regime operation. Three-dimensional transient flow calculations were performed using large eddy simulation (LES), coupled with the volume of fluid method. This study finds that LES is effective at capturing the different scales of turbulence present within PSECs, and their operational influence. Explicit analysis of the hydrodynamics established that the sieve-plates drive dispersive mixing through their influence on the resulting turbulent flow and flow structures. Furthermore, the standard round-hole sieve-plate design is found to perform poorly at producing and distributing the types of flow and turbulence beneficial to droplet size reduction.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Crown Copyright © 2020 Published by Elsevier Ltd. All rights reserved. This is an author produced version of an article published in Chemical Engineering Science. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | CFD simulation; Volume of fluid; Pulsed sieve-plate extraction column; Dispersive mixing; Liquid-liquid flow; OpenFOAM |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Funding Information: | Funder Grant number EU - European Union 755171 |
Depositing User: | Symplectic Publications |
Date Deposited: | 17 Apr 2020 13:09 |
Last Modified: | 20 Mar 2021 01:38 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.ces.2020.115640 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:159565 |
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Filename: Design Implications of PSEC - Chem Eng Sci 2020.pdf
Licence: CC-BY-NC-ND 4.0