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Solid Fluctuations and Dispersion in Liquid-Solid Fluidized Beds With Low Surface Tension Media

[+] Author Affiliations
H. O. Lim, M. J. Seo, Y. Kang

Chungnam National University, Daejeon, Korea

K. W. Jun

Korea Research Institute of Chemical Technology, Daejeon, Korea

Paper No. AJK2011-09003, pp. 2297-2304; 8 pages
doi:10.1115/AJK2011-09003
From:
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D
  • Hamamatsu, Japan, July 24–29, 2011
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4440-3
  • Copyright © 2011 by ASME

abstract

Fluctuations and dispersion of solid particles were investigated in a liquid-solid fluidized bed of which diameter was 0.102 m and 2.5 m in height. Effects of liquid velocity (0.005 ∼ 0.13 m/s), particle size (0.5 ∼ 3.0 × 10−3 m) and surface tension of continuous liquid media (56 ∼ 72 × 10−3 N/m) on the fluctuation frequency and dispersion coefficient of fluidized solid particles were determined. The fluctuating frequency and dispersion coefficient of particles were estimated by means of the relaxation model based on the stochastic theory. Both of fluctuating frequency and dispersion coefficient of particles showed maximum values with a variation of liquid velocity and increased with an increase in the particle size or surface tension of liquid media. The values of fluctuating frequency and dispersion coefficient of fluidized solid particles were well correlated in terms of dimensionless groups as well as operating variables.

Copyright © 2011 by ASME

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