The behavior of suspended solid particles and liquid in bubble columns
TLDR
In this article, the longitudinal dispersion coefficient of solid particles and liquid based on actual mean slurry velocity, the mean settling velocity, and the concentration of the solid particles at the top of the column, respectively, were correlated with dimensionless groups.Abstract:
The longitudinal concentration distribution of solid particles and liquid mixing in 6.6, 12.2 and 21.4 cm i. d. bubble columns were measured and were analyzed by using diffusion model. The longitudinal dispersion coefficient of solid particles and liquid based on actual mean slurry velocity, the mean settling velocity of solid particles, and the concentration of solid particles at the top of the column, respectively, were correlated with dimensionless groups. From these correlations empirical equations were obtained. The values of concentration of solid particles calculated from the empirical equations agreed with the observed values within ±20%.read more
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Mass transfer in gas-liquid slurry reactors
TL;DR: A critical review on the mass transfer characteristics of gas?liquid slurry reactors is presented in this article, where the authors discuss the influence of the presence of solid particles on the following mass transfer parameters: volumetric gas? liquid mass transfer coefficients (kLa, kGa), liquid-side mass transfer coefficient (kL and kS), and specific gas?slurry contact area (a).
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Effect of viscosity on homogeneous–heterogeneous flow regime transition in bubble columns
TL;DR: In this article, a cylindrical 0.14m diameter bubble column with a metal perforated plate was used to study the stability of the homogeneous-heterogeneous regime transition.
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Hydrodynamic behavior of slurry bubble column at high solids concentrations
TL;DR: In this paper, the axial distribution of slurry concentration followed the classical sedimentation-dispersion model, while the effects of gas velocity on axial solids distribution were found to be minimal over the range of gas velocities investigated.
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Three-phase fluidization: Some knowledge gaps
TL;DR: The most recent review by ostergaard as mentioned in this paper on the fluid mechanics of three-phase fluidized beds is updated and broadened, and the more manifest knowledge gaps are identified, and a systematic classification of the various modes of three phase fluidization is presented in order to provide some perspective on the research which has been done and on that which has yet to be done.
Patent
Slurry bubble column (C-2391)
TL;DR: In this article, a method for optimally operating a three phase slurry bubble column is presented. But this method is limited to a single column and requires a large number of plug flows over the column length.