Oxygen Transfer in a Three-Phase Circulating Fluidized Bed with Viscous Liquid Medium

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Characteristics of oxygen transfer were investigated in the riser of a viscous three-phase circulating fluidized bed, with a diameter of 0.102 m (1D) and a height of 3.5 m. Effects of gas (0.01-0.09 m/s) and liquid (0.12-0.43 m/s) velocities, fluidized solid particle size (1.0, 1.7, 2.1, 3.0 mm), solid circulation rate (2-8 kg/(m(2).s)) and liquid viscosity (0.96-38 mPa-s) on the volumetric oxygen transfer coefficient in the riser were examined. The oxygen transfer coefficient was found to increase with increasing gas velocity, particle size and solid circulation rate, while it decreased with increasing viscosity of the continuous liquid medium, and changed very little with the variation of liquid velocity. The oxygen transfer coefficients were well correlated in terms of dimensionless groups as well as operation variables.
Publisher
SOC CHEMICAL ENG JAPAN
Issue Date
2008-07
Language
English
Article Type
Article; Proceedings Paper
Keywords

MASS-TRANSFER; INTERFACIAL AREA; HEAT-TRANSFER; GAS-HOLDUP; DISPERSION; BIOREACTORS; REACTORS; BEHAVIOR

Citation

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, v.41, no.7, pp.655 - 661

ISSN
0021-9592
DOI
10.1252/jcej.07WE119
URI
http://hdl.handle.net/10203/86690
Appears in Collection
CBE-Journal Papers(저널논문)
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