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An empirical model for the prediction of cloud height
Date
2024-02-01
Author
Altıntaş, Ezgi
Ayrancı Tansık, İnci
Metadata
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At high solids concentrations (>2 vol%), a clear interface appears between solid-rich and liquid-rich parts of a solid-liquid mixing tank. The height of this interface is known as cloud height. The cloud height is one of the key design parameters; therefore, accurate prediction of it plays a critical role in the design of solid-liquid mixing tanks. This study proposes an empirical model that predicts cloud height as a function of particle properties, solids concentration (XV), off-bottom clearance, and impeller speed. Experiments were performed in a tall tank (H=1.5 T) agitated with a 45° down-pumping PBT. The model was tested against two independent data sets. It successfully predicts the cloud height for XV between 2 to 8 vol% and off-bottom clearance between T/6 to T/3. The size and the density of the particles were varied between 123 to 712 µm and 2500 to 7600 kg/m3, respectively. A modified version of the model was also proposed for high solids concentrations.
Subject Keywords
Cloud height model
,
High solids concentration
,
Solids suspension
,
Tall stirred tanks
URI
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85182406905&origin=inward
https://hdl.handle.net/11511/107997
Journal
Chemical Engineering Research and Design
DOI
https://doi.org/10.1016/j.cherd.2023.12.021
Collections
Department of Chemical Engineering, Article
Citation Formats
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BibTeX
E. Altıntaş and İ. Ayrancı Tansık, “An empirical model for the prediction of cloud height,”
Chemical Engineering Research and Design
, vol. 202, pp. 327–335, 2024, Accessed: 00, 2024. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85182406905&origin=inward.