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A simple correlation for solids holdup in a gas-liquid-solid fluidized bed

✍ Scribed by Rong-Her Jean; Liang-Shih Fan

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 601 KB
Volume: 41
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(86)80013-6

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✦ Synopsis

A simple empirical model was established which allows solids holdup in a gas-liquid-solid fluidized bed containing large and dense particles to be readily predicted based on the equation of Richardson and Zaki (1954, Trans. Inst. Chem. Engrs 32, 35) for liquid-solid Auidized bed systems. The approach is applicable both to monocomponent particle systems and to binary mixtures of particles. For a monocomponent system, a correlation for model parameters was proposed which is expressed as a function of particle diameter, particle density, bed diameter and liquid density. For a binary mixture of particles, the averaging and serial approaches were shown to predict the solids holdup equally well within the range of the gas and liquid velocities considered. Experiments were also performed using eight solid particles for the monocomponent system and five binary mixtures of particles differing in diameter and/or density for the mixture system to substantiate the model.

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