Temperature Effect on the Particle Entrainment Rate in a Gas Fluidized Bed

The qualitative effect of temperature on the particle entrainment rate has been measured in a gas fluidized bed (0.1 m i.d., 1.97 m height). The gas velocity (0.65−2.3 m/s), the bed temperature (12−600 °C), the particle density (2509−6158 kg/m3), and the particle size (0.091−0.363 mm) were considere...

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Bibliographic Details
Published inIndustrial & engineering chemistry research Vol. 37; no. 3; pp. 1130 - 1135
Main Authors Choi, Jeong-Hoo, Ryu, Ho-Jung, Shun, Do-Won, Son, Jae-Ek, Kim, Sang-Done
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 02.03.1998
Subjects
Applied sciences
Chemical engineering
Exact sciences and technology
Fluidization
Particle motion
Elutriation
Temperature effect
Gas solid
Hydrodynamics
Kinetics
Fluidization
Experimental study
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Summary:The qualitative effect of temperature on the particle entrainment rate has been measured in a gas fluidized bed (0.1 m i.d., 1.97 m height). The gas velocity (0.65−2.3 m/s), the bed temperature (12−600 °C), the particle density (2509−6158 kg/m3), and the particle size (0.091−0.363 mm) were considered as experimental variables. The particle entrainment rate increased after an initial decrease with increasing bed temperature. The effect of temperature on particle entrainment rate decreased as either the gas velocity or the particle density increased. Within the experimental range, it could be confirmed that the change of the particle entrainment rate with temperature was very similar to that of the particle size for which the terminal velocity was equal to the gas velocity.
Bibliography:ark:/67375/TPS-3L6L58JH-7
istex:7FCCB66C97DEBA1D5DA281D2E0B81A1D01DCD9CF
ISSN:0888-5885
1520-5045
DOI:10.1021/ie970456y