Particle—liquid mass transfer in three-phase fluidized beds

Burru, I.G.; Briens, Cédric

doi:10.1016/0032-5910(91)80049-o

Cited by 5 publications

(1 citation statement)

References 31 publications

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“…Similar findings for the CMC solution-solid two-phase fluidized beds have been reported. 20 Figure 5b describes the effect of the superficial gas velocity on the radial distribution of the local solid holdup. With increasing superficial gas velocity, the local solid holdup at the center decreases, and the local solid holdup at the wall region increases, indicating that the maximum value of local solid is shifted to the reactor wall region.…”

Section: Resultsmentioning

confidence: 99%

Experimental Investigation into the Radial Distribution of Local Phase Holdups in a Gas−Liquid−Solid Fluidized Bed

Chen

Liu

Guo

2007

Ind. Eng. Chem. Res.

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Experiments were conducted in a gas−liquid−solid fluidized bed (GLSFB), using two types of particles. The light particles were styrene-blend spheres 1.45 mm in diameter, with a density of 1264 kg/m3, whereas the heavy particles were spherical glass beads 0.48 and 1.25 mm in diameter, with a density of 2460 kg/m3. In both cases, compressed air and tap water and carboxymethyl cellulose sodium with concentrations of 0.05 and 0.20 wt % (CMCS) were used as the gas phase and liquid phase, respectively. Local holdups in the GLSFBs were measured simultaneously using an improved double-sensor micro-electric conductivity probe under different liquid viscosities, superficial gas velocity, superficial liquid velocity, and particle sizes. It was determined that local solid holdup decreased with increasing liquid viscosity, superficial gas velocity, and superficial liquid velocity, whereas the local solid holdup at the center increased as the particle size increased. A maximum value of local solid holdup existed at r/R = 0.75−0.85, whereas the minimum value of the local solid holdup was located at the wall region. Dimensionless correlations of local holdups were developed using measurement results. Calculation values using correlations are in reasonable agreement with the measurement data.

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Section: Resultsmentioning

confidence: 99%