Abstract
Solid-liquid mass transfer coefficients have been obtained by measuring the ion-exchange rate in a gas-liquid-solid three-phase upflow through a vertical tube. The three phase is composed of nitrogen gas, an electrolyte solution, and cation-exchange resin beads of 941μm in diameter. Other experimental variables are slurry velocity, gas velocity, and temperature. The mass transfer coefficients increased according to increases in the slurry velocity, gas velocity, and temperature. The experimental results have been correlated by the following equation, previously proposed for a solid-liquid two-phase tube flow:Sh=2+0.47(e1/3Dp4/3/υ)0.63Sc1/360<(e1/3Dp4/3/υ)<400, 269<Sc<641, md<0.01where e, Dp, ν, and md are energy dissipation rate per unit mass of liquid, particle diameter, kinematic viscosity, and delivered concentration of particles, respectively.
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