Assessing solids concentration homogeneity in Rushton-agitated slurry reactors using electrical resistance tomography (ERT)

Harrison, Susan T.L.; Stevenson, Ryan; Cilliers, J.J.

doi:10.1016/j.ces.2011.10.053

Cited by 54 publications

(48 citation statements)

References 19 publications

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“…Carletti et al also used ERT to investigate the spatial solids distribution in a stirred tank and they proposed a method to evaluate the solids distribution under different working conditions and geometrical set‐up. Tahvildarian et al and Harrison et al used ERT to study how the working condition, particle size, and particle concentration affected the solids concentration homogeneity in a stirred tank. Positron Emission Particle Tracking is a nonintrusive Lagrangian flow visualization technique that has been used to obtain the full 3D velocity and concentration fields of both the continuous phase and the dispersed phase in opaque mixing equipment .…”

Section: Introductionmentioning

confidence: 99%

Particle‐resolved PIV experiments of solid‐liquid mixing in a turbulent stirred tank

Gao

et al. 2017

AIChE Journal

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Particle Image Velocimetry (PIV) experiments on turbulent solid-liquid stirred tank flow with careful refractive index matching of the two phases have been performed. The spatial resolution of the PIV data is finer than the size of the spherical, uniformly sized solid particles, thereby providing insight in the flow around individual particles. The impeller is a down-pumping pitch-blade turbine. The impeller-based Reynolds number has been fixed to Re 5 10 4 . Overall solids volume fractions up to 8% have been investigated. The PIV experiments are impeller-angle resolved, that is, conditioned on the angular position of the impeller. The two-phase systems are in partially suspended states with an inhomogeneous distribution of solids: high solids loadings near the bottom and near the outer walls of the tank, much less solids in the bulk of the tank. The liquid velocity fields show very strong phase coupling effects with the particles increasingly attenuating the overall circulation patterns as well as the liquid velocity fluctuation levels when the solids volume fraction is increased.

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Section: Introductionmentioning

confidence: 99%

Particle‐resolved PIV experiments of solid‐liquid mixing in a turbulent stirred tank

Gao

et al. 2017

AIChE Journal

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“…Cilliers and his co-workers have developed and applied an ERT system Cilliers et al, 2001) to study foam, in particular the foam density distribution. Cilliers and his co-workers also tested ERT in solidliquid systems (Stevenson et al, 2006;Harrison et al, 2012). Jin et al (2007) studied the Sauter mean bubble size and rise velocity of a gas bubble swarm in a laboratory scale bubble column using ERT.…”

Section: Electrical Resistance Tomography (Ert)mentioning

confidence: 97%

A review of turbulence measurement techniques for flotation

Meng

Tabosa

Xie

et al. 2016

Minerals Engineering

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“…[22][23][24][25] The technique has a relatively high temporal resolution, up to few milliseconds, with sufficient spatial resolution of up to 1-3 % of column diameter. [26] The latest development of electrical tomography could capture tomography data up to 1000 frames per second.…”

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confidence: 99%

Parameters measurement of hydrodynamics and CFD simulation in multi‐stage bubble columns

et al. 2014

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The effect of superficial gas velocity and structural parameters of plate (perforated plate and tongue plate) on the hydrodynamics parameters of column are studied in a multi-stage bubble column, with 2000 mm height and 282 mm diameter of the multi-stage bubble column, by using the electrical resistance tomography (ERT) technique and computational fluid dynamics (CFD). According to the results, ERT and CFD techniques can be well applied to the measurement and estimation of gas-liquid two-phase processes. The gas holdups, the radial distribution of gas holdup and gas cap height strongly depend on the operating condition and tray structure. By increasing the superficial gas velocity, the gas holdup in the multi-stage bubble column increases. With a decrease of the open area ratio, the hole diameter and tongue angle, the gas holdups and gas cap height below the perforated plate increase. The addition of the perforated plate enhances the flow behaviour of gas-liquid in bubble column. The CFD can then aid the prediction of gas cap height and gas holdup in a multi-stage bubble column.

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Assessing solids concentration homogeneity in Rushton-agitated slurry reactors using electrical resistance tomography (ERT)

Cited by 54 publications

References 19 publications

Particle‐resolved PIV experiments of solid‐liquid mixing in a turbulent stirred tank

Particle‐resolved PIV experiments of solid‐liquid mixing in a turbulent stirred tank

A review of turbulence measurement techniques for flotation

Parameters measurement of hydrodynamics and CFD simulation in multi‐stage bubble columns

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