Cao, H, Amador, C, Jia, X orcid.org/0000-0001-8590-7477 et al. (2 more authors) (2016) A modelling framework for bulk particles dissolving in turbulent regime. Chemical Engineering Research and Design, 114. pp. 108-118. ISSN 0263-8762
Abstract
A mixing-tank model combining CFD simulation and Noyes–Whitney equation has been demonstrated for predicting dissolution of spray-dried detergent powder. The dissolution behaviour of bulk particles has been directly linked to the input power of the mixing system which is highly desired by industry with the aim of reducing testing when extrapolating particle dissolution performance from bench scale measurements to any washing system/condition. Initial particle parameters such as density, solubility, size distribution and diffusivity were considered. The model was first validated with experiment of non-porous single-ingredient particle Na2CO3 granules. Later, porous multi-ingredients particles from spray-drying pilot were used to validate the model with dissolution experiment data. The good agreements between experiment and simulation at different agitating speeds and temperatures illustrated that the model can be used for predicting bulk particles dissolving in a turbulent regime where they are well suspended in the mixing system. The CFD simulation results revealed detail information about energy dissipation rate across the vessel which explained the phenomena that when non-porous Na2CO3 granules were not well mixed in the system, dissolution predicted by modelling was much faster than experiment, indicating that local energy dissipation rate could be one solution to improve the modelling accuracy of this case.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016, Elsevier. This is an author produced version of a paper published in Chemical Engineering Research and Design. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Dissolution; Simulation; Detergent powder; Turbulent regime |
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) > Institute for Particle Science and Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 15 Sep 2016 10:32 |
Last Modified: | 21 Aug 2017 11:18 |
Published Version: | http://dx.doi.org/10.1016/j.cherd.2016.08.012 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.cherd.2016.08.012 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:104697 |