TY - JOUR
T1 - Experimental characterization of random packed spheres, cylinders and rings, and their influence on pressure drop
AU - von Seckendorff, Jennie
AU - Szesni, Normen
AU - Fischer, Richard
AU - Hinrichsen, Olaf
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/8/31
Y1 - 2020/8/31
N2 - The reliable prediction of the pressure drop of packed-beds requires an accurate understanding of the packing characteristics. Therefore, packings of spheres, cylinders and hollow cylinders are studied: firstly, developing a reproducible and easily achievable packing generation method by single particle dropping; secondly, evaluating and correlating the average bed porosity as a function of the tube-to-particle diameter ratio λ, the diameter-to-height aspect ratio and the inner-to-outer diameter aspect ratio. The packed-bed pressure drop was measured, thoroughly evaluating the influence of particle filling speed, the error propagation from porosity deviations resulting in a multiplication factor of 3.1–3.9 for spheres and 2.4–3.0 for cylinders depending on material characteristics, and the influence of particle surface roughness, with rough particles increasing the packing friction by 17.5%. A novel Carman-type pressure drop correlation for smooth equilateral cylinder packings valid for Rep = 10–3000 is described.
AB - The reliable prediction of the pressure drop of packed-beds requires an accurate understanding of the packing characteristics. Therefore, packings of spheres, cylinders and hollow cylinders are studied: firstly, developing a reproducible and easily achievable packing generation method by single particle dropping; secondly, evaluating and correlating the average bed porosity as a function of the tube-to-particle diameter ratio λ, the diameter-to-height aspect ratio and the inner-to-outer diameter aspect ratio. The packed-bed pressure drop was measured, thoroughly evaluating the influence of particle filling speed, the error propagation from porosity deviations resulting in a multiplication factor of 3.1–3.9 for spheres and 2.4–3.0 for cylinders depending on material characteristics, and the influence of particle surface roughness, with rough particles increasing the packing friction by 17.5%. A novel Carman-type pressure drop correlation for smooth equilateral cylinder packings valid for Rep = 10–3000 is described.
KW - Average voidage
KW - Cylinder packings
KW - Packed beds
KW - Pressure drop
UR - http://www.scopus.com/inward/record.url?scp=85083557692&partnerID=8YFLogxK
U2 - 10.1016/j.ces.2020.115644
DO - 10.1016/j.ces.2020.115644
M3 - Article
AN - SCOPUS:85083557692
SN - 0009-2509
VL - 222
JO - Chemical Engineering Science
JF - Chemical Engineering Science
M1 - 115644
ER -