Correlation of liquid-side mass transfer coefficient for single particles and fixed beds.
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概要
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The mass transfer coefficients between particles and liquid were correlated for single particles and for fixed beds with specific power group including the energy dissipation rate defined for a particle. The following empirical equations were obtained over a wide range from laminar to turbulent flow, assembling the published data including those of the authors for fixed beds: for single particles Sh=2+0.59(ε1/3Dp4/3/v)0.57Sc1/3 2<(ε1/3Dp4/3/v)<63000, 570<Sc<1420 for fixed beds Sh=2+0.51(ε1/3Dp4/3/ν)0.60Sc1/3 0.2<(ε1/3Dp4/3/ν)<4600, 505<Sc<70600where e is energy dissipation rate per unit mass of liquid flowing around a particle, Dp is particle diameter, and ν is kinematic viscosity of liquid. These equations, almost identical, are also practically the same as published ones for stirred tanks, suspended bubble columns, and twophase tube-flow. The agreement suggests that specific power group may be useful as a general parameter in the study of mass-transfer phenomena between liquid and particles where the liquid is either quiescent or turbulent and the particles are either fixed or suspended.
- 公益社団法人 化学工学会の論文
著者
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Kikuchi Ken-ichi
Department Of Engineering In Applied Chemistry Akita University
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Konno Hiroshi
Department Of Industrial Engineering And Management Tokyo Institute Of Technology
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SUGAWARA TAKUO
Department of Chemical Engineering for Resources, Akita University
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Ohashi Hiroyasu
Department of Fuel Chemistry, Mining College, Akita University
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KIKUCHI KEN-ICHI
Department of Chemical Engineering for Resources, Akita University
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