Effects of binary particle size distribution on the fluid dynamic behavior of fluidized, vibrated and vibrofluidized beds
In this work the effects of particle size distribution on the dynamics and segregation patterns in fluidized, vibrated and vibrofluidized beds were investigated. A binary particle size distribution and a reference one composed of glass spheres with a mean Sauter diameter of 2.18×10-3 m were tested....
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Brazilian Society of Chemical Engineering
2008-03-01
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doaj-efdb74a2b9db4e29b000f0a62ac361cb2020-11-25T00:32:11ZengBrazilian Society of Chemical EngineeringBrazilian Journal of Chemical Engineering0104-66321678-43832008-03-01251839410.1590/S0104-66322008000100010Effects of binary particle size distribution on the fluid dynamic behavior of fluidized, vibrated and vibrofluidized bedsR. V. DaleffeM. C. FerreiraJ. T. FreireIn this work the effects of particle size distribution on the dynamics and segregation patterns in fluidized, vibrated and vibrofluidized beds were investigated. A binary particle size distribution and a reference one composed of glass spheres with a mean Sauter diameter of 2.18×10-3 m were tested. The experimental setup consisted basically of a circular glass chamber with a height of 0.50 m and a diameter of 0.114 m, operated in the fluidized bed mode (gamma = 0.00), in either vibrated or vibrofluidized bed modes (gamma = 2.00). The pressure drops in the fluidized and vibrofluidized beds were not significantly affected by the binary particle size distribution. Well-defined segregation patterns occurred in fluidized and vibrated beds with small particles concentrating at the top and large particles at the bottom in the first situation and the reverse in the second one. Segregation patterns in vibrofluidized beds depended on the values of vibration parameters. Segregation in vibrofluidized and vibrated beds was minimized by operating at a high amplitude of vibration.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322008000100010Vibrofluidized bedVibrated bedFluidized bedFluidizationParticle size distributionSize segregation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
R. V. Daleffe M. C. Ferreira J. T. Freire |
spellingShingle |
R. V. Daleffe M. C. Ferreira J. T. Freire Effects of binary particle size distribution on the fluid dynamic behavior of fluidized, vibrated and vibrofluidized beds Brazilian Journal of Chemical Engineering Vibrofluidized bed Vibrated bed Fluidized bed Fluidization Particle size distribution Size segregation |
author_facet |
R. V. Daleffe M. C. Ferreira J. T. Freire |
author_sort |
R. V. Daleffe |
title |
Effects of binary particle size distribution on the fluid dynamic behavior of fluidized, vibrated and vibrofluidized beds |
title_short |
Effects of binary particle size distribution on the fluid dynamic behavior of fluidized, vibrated and vibrofluidized beds |
title_full |
Effects of binary particle size distribution on the fluid dynamic behavior of fluidized, vibrated and vibrofluidized beds |
title_fullStr |
Effects of binary particle size distribution on the fluid dynamic behavior of fluidized, vibrated and vibrofluidized beds |
title_full_unstemmed |
Effects of binary particle size distribution on the fluid dynamic behavior of fluidized, vibrated and vibrofluidized beds |
title_sort |
effects of binary particle size distribution on the fluid dynamic behavior of fluidized, vibrated and vibrofluidized beds |
publisher |
Brazilian Society of Chemical Engineering |
series |
Brazilian Journal of Chemical Engineering |
issn |
0104-6632 1678-4383 |
publishDate |
2008-03-01 |
description |
In this work the effects of particle size distribution on the dynamics and segregation patterns in fluidized, vibrated and vibrofluidized beds were investigated. A binary particle size distribution and a reference one composed of glass spheres with a mean Sauter diameter of 2.18×10-3 m were tested. The experimental setup consisted basically of a circular glass chamber with a height of 0.50 m and a diameter of 0.114 m, operated in the fluidized bed mode (gamma = 0.00), in either vibrated or vibrofluidized bed modes (gamma = 2.00). The pressure drops in the fluidized and vibrofluidized beds were not significantly affected by the binary particle size distribution. Well-defined segregation patterns occurred in fluidized and vibrated beds with small particles concentrating at the top and large particles at the bottom in the first situation and the reverse in the second one. Segregation patterns in vibrofluidized beds depended on the values of vibration parameters. Segregation in vibrofluidized and vibrated beds was minimized by operating at a high amplitude of vibration. |
topic |
Vibrofluidized bed Vibrated bed Fluidized bed Fluidization Particle size distribution Size segregation |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322008000100010 |
work_keys_str_mv |
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