Application of electrical resistance tomography to interrogate mixing processes at plant scale

Mann, R.; Dickin, F.J.; Wang, M.; Dyakowski, T.; Williams, Richard A; Edwards, R. B.; FORREST, ALAN; Holden, Peter J.

doi:10.1016/s0009-2509(97)00036-5

Cited by 108 publications

(64 citation statements)

References 6 publications

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“…EIT is applied for monitoring moisture in porous media (like cement-based materials) [126], for air-core vortex detection, miscible fluid mixing and gas-liquid mixing processes [127]. In a radial flow packed bed catalytic reactor, ERT was used for generation of 3D flow maps and spatial velocity vector distribution based on an injected high conductivity tracer [128].…”

Section: Electrical Process Tomographymentioning

confidence: 99%

Overview of Electric Field Applications in Energy and Process Engineering

Zigan

2018

Energies

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Heat and mass transfer as well as chemical reactions in technical processes can be enhanced by using electric fields. This paper provides an overview of current fundamental and applied research as well as potential technical applications of electric fields in energy and process engineering. This includes electrosprays, technical combustors as well as electrochemical reforming and plasma gasification of waste or biomass. Other emerging fields are plasma technologies for treatment of water, surfaces and gases including flue gases. In particle or aerosol-laden flows, plasmas are used to promote particle nucleation and surface growth for controlled nanomaterial synthesis. Furthermore, non-invasive diagnostics based on electromagnetic fields and electric fluid properties are relevant techniques for online control and optimization of technical processes. Finally, an overview of laser-based techniques is provided for studying electro-hydrodynamic effects, temperature, and species concentrations in plasma and electric-field enhanced processes.

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Section: Electrical Process Tomographymentioning

confidence: 99%

Overview of Electric Field Applications in Energy and Process Engineering

Zigan

2018

Energies

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“…In addition, local gas hold-up remains unknown in whole reactor. Application of Electrical Impedance Tomography (EIT), which is based on voltage measurements, has shown great potential in studies of multiphase flows for phase visualization in 3D [12][13][14]. Since conductivity is a function of gas hold-up, it is possible to obtain local void fraction of secondary phase by measuring voltages difference between primary phase alone and multiphase flow.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study of Multiphase Mixing Hydrodynamics in Batch Stirred Tank Applied to Ammoniacal Thiosulphate Leaching of Gold

Gradov¹,

González²,

Vauhkonen³

et al. 2017

J Chem Eng Process Technol

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Hydrodynamics of aerated slurry is studied experimentally and numerically using the example of thiosulphate leaching of gold concentrate. The studied milled concentrate has shear-thinning fluid rheology and it was imitated by water-based solutions of CMC. Presence of electrolytes, as in the case of the leaching slurry, has great influence on bubble size distribution. Primary phase flow is measured by Particle Image Velocimetry. Local gas hold-up in aerated CMC 50000 (0.15 w%) solution is measured by Electrical Impedance Tomography. Volumetric mass transfer is measured by dynamic method in different CMC solutions over a range of operational conditions in absence and presence of electrolytes. The experimental data was used in CFD modelling of the aerated slurry. Single phase hydrodynamics of shear-thinning fluid (CMC 50000 (0.15 w%)) have been modelled and validated against experimental data with reasonable agreement. Multiphase mixing of the thiosulphate slurry was modelled with the assumption of constant bubble size. The results of the simulations and measurements are presented and discussed.

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“…The aim of ERT is to reconstruct the conducting (or dielectric) properties of an object from ERT measurements of electrical signals, taken from all possible views of the sensing electrodes [2]. It involves imaging internal material distribution with relatively low cost and fast imaging speed.…”

Section: Introductionmentioning

confidence: 99%

Design of a low-cost integrated Electrical Resistance Tomography(ERT) system based on serial bus

Wang

Liu

Ανδρικόπουλος

et al. 2016

2016 IEEE International Conference on Imaging Systems and Techniques (IST)

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Abstract-A low-cost integrated ERT system based on serial bus and 2 evaluation boards with 8 electrodes is designed and implemented. Tikhonov regularization is adopted for image reconstruction with conductance values measured from the designed system. Test results suggest that the system can produce reliable and repeatable measurements for image reconstructions of multiple objects with the cost lower than 100 GBP. Comparisons between the proposed low-cost system and commercial ERT system are also implemented to conclude the advantages and drawbacks of the proposed system.

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Application of electrical resistance tomography to interrogate mixing processes at plant scale

Cited by 108 publications

References 6 publications

Overview of Electric Field Applications in Energy and Process Engineering

Overview of Electric Field Applications in Energy and Process Engineering

Experimental and Numerical Study of Multiphase Mixing Hydrodynamics in Batch Stirred Tank Applied to Ammoniacal Thiosulphate Leaching of Gold

Design of a low-cost integrated Electrical Resistance Tomography(ERT) system based on serial bus

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