Hunter, TN orcid.org/0000-0003-3922-491X, Peakall, J orcid.org/0000-0003-3382-4578, Egarr, D et al. (12 more authors) (2020) Concentration profiling of a horizontal sedimentation tank utilising a bespoke acoustic backscatter array and CFD simulations. Chemical Engineering Science, 218. 115560. ISSN 0009-2509
Abstract
The performance of a pilot-scale horizontal sedimentation tank was characterised utilising computational fluid dynamics (CFD) and a bespoke ultrasonic backscatter array, for both spherical glass and flocculated calcite separation. The CFD simulation was developed in OpenFOAM, using algebraic slip and hindered settling models, in order to solve the transport of multiple particle size classes, enabled through a population balance approach. Simulations of concentration compared closely to samples for the glass dispersions, but under-predicted concentration with flocculated calcite (likely due to complexities from modelling floc break-up in the mixer). In comparison, the acoustic array measured the calcite concentration with a high degree of resolution, where in particular, evidence suspension mobilisation near the outlet was observed, due to recirculation. Overall, we demonstrate the performance and current limitations of large-scale CFD for complex floc systems, as well as the use of ultrasonics to significantly aid process understanding, through online monitoring of solid-liquid separations.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 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: | Acoustic backscatter systems; ultrasonics; CFD; horizontal sedimentation; clarifier; flocculation |
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) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Robotics, Autonomous Systems & Sensing (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Systems and Design (iESD) (Leeds) The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Institute for Applied Geosciences (IAG) (Leeds) |
Funding Information: | Funder Grant number Innovate UK fka Technology Strategy Board (TSB) TSB101433 EPSRC (Engineering and Physical Sciences Research Council) EP/L014041/1 EPSRC (Engineering and Physical Sciences Research Council) EP/F055412/1 Sellafield Ltd Not Known |
Depositing User: | Symplectic Publications |
Date Deposited: | 13 Feb 2020 15:15 |
Last Modified: | 10 Feb 2021 01:38 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.ces.2020.115560 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:156883 |
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