Analysis of bubble behaviors in bubble columns using electrical resistance tomography

Jin, Haibo; Wang, Mi; Williams, Richard A

doi:10.1016/j.cej.2006.08.032

Cited by 91 publications

(47 citation statements)

References 24 publications

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“…Wire mesh sensors, ECT and ERT have been used to obtain measurements of the velocity of the discrete phase (Gumery, Ein-Mozaffari, & Dahman, 2011;Jin, Wang, & Williams, 2007;Richter et al, 2002;Warsito & Fan, 2003). In these examples, the distribution of the two phases is measured by sensors separated by a known distance.…”

Section: Fluid Velocity Measurementsmentioning

confidence: 99%

Applications of tomography in bubble column and trickle bed reactors

Holland

2015

Industrial Tomography

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Section: Fluid Velocity Measurementsmentioning

confidence: 99%

Applications of tomography in bubble column and trickle bed reactors

Holland

2015

Industrial Tomography

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“…For studying the hydrodynamic behaviour of bubble columns, ERT is suitable for acquiring data in real time for calculating electrical conductivities at various positions in the column. Based on the gasliquid two phase, the Maxwell equation describes the relationship between the local gas holdup and the conductivity of gas-liquid flows: [27] …”

Section: Electrical Resistance Tomographymentioning

confidence: 99%

“…In our previous work, we successfully used ERT techniques to study the distributions of gas holdups, visualization of concentration profiles and characteristics of the fluid dynamics in a conventional bubble column with gas-liquid two-phase or gas-liquid-solid three-phase systems. [27][28][29][30] However, there has rarely been research regarding the application of ERT to measuring the hydrodynamic parameters of a multi-stage bubble column. For the first time, ERT was applied to study the effects of superficial gas velocity and the geometric design of perforated plates on the gas holdup, and its radial distribution above and below the plates of the bubble column in a multi-stage bubble column using ERT.…”

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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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“…Electrical resistance tomography (ERT) is one kind of PT technique and has been proved to be a powerful tool for mapping the concentration and velocity distributions in two-phase flow [3,4]. In principle, ERT can overcome the complexity of gas/liquid flow by explicitly deriving the component distributions at two adjacent planes along the pipeline.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on Electrical Resistance Tomography System for Vertical Gas/Liquid Two-phase Pipe Flow

Zhang¹,

Zhang²,

Zhu³

2016

Proceedings of the 2nd International Conference on Advances in Mechanical Engineering and Industrial Informatics (AMEII 2016)

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Abstract. Measurements of gas holdup and velocity are required in gas/liquid two-phase flow. Using electrical resistance tomography (ERT) technique, the cross-sectional image can be obtained, and hence the gas holdup is estimated. Combining ERT with the cross correlation flow measurement technique, the velocity can be calculated. A digital twin-plane ERT system for use on laboratory was developed. The velocity measurement method based on gas holdup of two plane images cross correlation was described. This paper presented the reconstructed images, gas holdup estimations and correlation velocity. Experiment results showed the feasibility of the presented method.

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Analysis of bubble behaviors in bubble columns using electrical resistance tomography

Cited by 91 publications

References 24 publications

Applications of tomography in bubble column and trickle bed reactors

Applications of tomography in bubble column and trickle bed reactors

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

Experimental study on Electrical Resistance Tomography System for Vertical Gas/Liquid Two-phase Pipe Flow

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