Several effects of electric fields on liquid extraction

Yang, Wenrui; Carleson, T.E.

doi:10.1109/28.54265

Cited by 6 publications

(2 citation statements)

References 9 publications

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“…Muginstein et al developed a model relevant to spray towers for gas absorption into a large slurry droplet, with the results indicating that internal circulation enhanced the mass-transfer with respect to a stagnant droplet for large droplets. Some studies – have been carried out by applying electric fields to enhance the gas–liquid mass-transfer. Yang and Carleson studied the effects of electric fields on the dispersed liquid phase flow behavior and mass-transfer efficiency of several liquid–liquid systems by using a single/multiple nozzle extraction column.…”

Section: Introductionmentioning

confidence: 99%

“…Some studies – have been carried out by applying electric fields to enhance the gas–liquid mass-transfer. Yang and Carleson studied the effects of electric fields on the dispersed liquid phase flow behavior and mass-transfer efficiency of several liquid–liquid systems by using a single/multiple nozzle extraction column. Wang et al investigated the atomization characteristics of an electrohydrodynamics limestone water spray and observed the changes in the droplet diameter and the specific charge in relation to various applied voltages.…”

Section: Introductionmentioning

confidence: 99%

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Flue Gas Desulfurization with an Electrostatic Spraying Absorber

2008

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A flue gas desulfurization device and process were developed and tested in this study. The process used an electrostatic spraying absorber (ESA) as the reactor, where SO2 was absorbed into an aqueous slurry of reactive Ca(OH)2. The absorption process was analyzed by using the two-film theory of mass-transfer. Both the liquid and gas side resistances were important, and the absorption rate was controlled by a combination of both gas-film and liquid-film diffusion controls. The ESA characteristics were investigated between applied voltages from −10 to 10 kV at various slurry flow rates. The SO2 removal efficiency was independent of the polarity of the applied voltage. A slightly higher efficiency was obtained with the conduction charging configuration than with the induction charging configuration. A model of external mass-transfer with a chemical enhancement factor was proposed for estimation of the absorption efficiency; the theoretical SO2 removal efficiency obtained was compared with the experimental data.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flue Gas Desulfurization with an Electrostatic Spraying Absorber

2008

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The effect of electric field on mass transfer from drops dispersed in a viscous liquid

He¹,

Baird²,

Chang³

1993

Can. J. Chem. Eng.

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Mass transfer of benzoic acid from drops dispersed into a continuous phase of mineral oil with high viscosity has been investigated both with and without an imposed non‐uniform d.c. electric field. Total mass transfer efficiency was significantly enhanced in the presence of the high voltage electric field. The results indicate that the application of the electric field to the drop formation process does not change the fundamental mass transfer mechanisms and the mass transfer during drop free fall can also be described by existing mass transfer models. The results also suggest that the high viscosity of the continuous phase inhibits the drops oscillation as well as circulation when the drop sizes become smaller under the applied high voltage electric field. Therefore the significant enhancement of mass transfer efficiency in the present work is mainly due to the increased specific interfacial area.

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