TY - JOUR
T1 - Bridging the gap between solids suspension theory and equipment design
AU - Giacomelli, Jason J.
AU - Grenville, Richard K.
AU - Van den Akker, Harry E.A.
N1 - Publisher Copyright:
© 2022 Institution of Chemical Engineers
PY - 2023/2
Y1 - 2023/2
N2 - The aim of this research was to investigate the effect of equipment design on suspending solid particles in stirred vessels. We investigated and evaluated several improvements to the Grenville-Mak-Brown correlation for the just-suspended impeller speed with the goal of generalizing it. We present two new geometry-specific as well as generalized suspension correlations based on experiments made with 225 µm sand in water in four vessel geometries: cylindrical flat-based, cylindrical torispherical dish-based, square flat-based, and horizontally oriented cylindrical vessels. We also present novel experimental data for both a wide blade hydrofoil and a pitched blade turbine. We define a vessel sphericity parameter to generalize the various tanks into a single correlation permitting interpolation to other vessel types and sizes not tested. We further show how controlled particle settling can be used to transform a flat-based stirred vessel into an equivalent torispherical dish-based vessel to save energy.
AB - The aim of this research was to investigate the effect of equipment design on suspending solid particles in stirred vessels. We investigated and evaluated several improvements to the Grenville-Mak-Brown correlation for the just-suspended impeller speed with the goal of generalizing it. We present two new geometry-specific as well as generalized suspension correlations based on experiments made with 225 µm sand in water in four vessel geometries: cylindrical flat-based, cylindrical torispherical dish-based, square flat-based, and horizontally oriented cylindrical vessels. We also present novel experimental data for both a wide blade hydrofoil and a pitched blade turbine. We define a vessel sphericity parameter to generalize the various tanks into a single correlation permitting interpolation to other vessel types and sizes not tested. We further show how controlled particle settling can be used to transform a flat-based stirred vessel into an equivalent torispherical dish-based vessel to save energy.
KW - Mixing
KW - Solids Suspension
KW - Stirred Vessel
KW - Turbulence
UR - http://www.scopus.com/inward/record.url?scp=85149758099&partnerID=8YFLogxK
U2 - 10.1016/j.cherd.2022.12.015
DO - 10.1016/j.cherd.2022.12.015
M3 - Article
AN - SCOPUS:85149758099
SN - 0263-8762
VL - 190
SP - 793
EP - 813
JO - Chemical Engineering Research and Design
JF - Chemical Engineering Research and Design
ER -