Axial dispersion of liquid in liquid fluidized beds in the low Reynolds number region.

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概要

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• Axial dispersion coefficients of liquid were measured for liquid fluidized beds in the low Reynolds number region by the residence-time-curve method. Particles used were polystyrene and glass beads of diameter from 239 to 1887 μm. The experimental results were successfully correlated by the following empirical equation: Ez/v= 500ε0.43 exp {- 20.5(0.75 - e)2} 0.41<e<0.93, 0.15<Re0<100, 8×10-5<ε<0.44where Ez is the axial dispersion coefficient, ε the kinematic viscosity of liquid, s the energy dissipation rate [m2/s3], e the void fraction and Re0 the particle Reynolds number based on superficial velocity. Most of the published correlations estimate too large values of the axial dispersion coefficient over the low Reynolds number region except in the case of glass beads of small diameter.

• 公益社団法人 化学工学会の論文

著者

• Kikuchi Ken-ichi

  Department Of Engineering In Applied Chemistry Akita University

• Konno Hiroshi

  Department Of Industrial Engineering And Management Tokyo Institute Of Technology

• SUGAWARA TAKUO

  Department of Chemical Engineering for Resources, Akita University

• Ohashi Hiroyasu

  Department of Fuel Chemistry, Mining College, Akita University

• KAKUTANI SHUJI

  Department of Chemical Engineering for Resources, Mining College, Akita University

• KIKUCHI KEN-ICHI

  Department of Chemical Engineering for Resources, Akita University

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