Electrical Demulsification of W/O Emulsion by Continuous Tubular Coalescer

Masahiro Goto; Jin Irie; Kazuo Kondo; Fumiyuki Nakashio

doi:10.1252/jcej.22.401

Electrical Demulsification of W/O Emulsion by Continuous Tubular Coalescer

Masahiro Goto, Jin Irie, Kazuo Kondo, Fumiyuki Nakashio

Chemistry and Biochemistry

Research output: Contribution to journal › Article › peer-review

66 Citations (Scopus)

Abstract

The continuous demulsification of W/O emulsion under applied A.C. voltage was investigated, using a tubular coalescer. The effects of water-phase holdup, applied voltage and water-droplet size on demulsification rate were investigated, using emulsions prepared under various conditions. The rate was proportional to the — 1, 0.5 and 3rd power of water-phase holdup, applied voltage and water-droplet size, respectively. The experimental equation taking these contributions into account showed satisfactory agreement with the observed values. Further, the effects of surfactant, extractant and solvent on the rate were examined and it was found that the combination of the three strongly affects the rate. The energy consumption for continuous demulsification using the present apparatus is several kWh/m³-emulsion, so this coalescer can be applied to industrial processing.

Original language	English
Pages (from-to)	401-406
Number of pages	6
Journal	JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Volume	22
Issue number	4
DOIs	https://doi.org/10.1252/jcej.22.401
Publication status	Published - 1989

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Chemistry(all)
Chemical Engineering(all)

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abstract = "The continuous demulsification of W/O emulsion under applied A.C. voltage was investigated, using a tubular coalescer. The effects of water-phase holdup, applied voltage and water-droplet size on demulsification rate were investigated, using emulsions prepared under various conditions. The rate was proportional to the — 1, 0.5 and 3rd power of water-phase holdup, applied voltage and water-droplet size, respectively. The experimental equation taking these contributions into account showed satisfactory agreement with the observed values. Further, the effects of surfactant, extractant and solvent on the rate were examined and it was found that the combination of the three strongly affects the rate. The energy consumption for continuous demulsification using the present apparatus is several kWh/m3-emulsion, so this coalescer can be applied to industrial processing.",

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T1 - Electrical Demulsification of W/O Emulsion by Continuous Tubular Coalescer

AU - Goto, Masahiro

AU - Irie, Jin

AU - Kondo, Kazuo

AU - Nakashio, Fumiyuki

PY - 1989

Y1 - 1989

N2 - The continuous demulsification of W/O emulsion under applied A.C. voltage was investigated, using a tubular coalescer. The effects of water-phase holdup, applied voltage and water-droplet size on demulsification rate were investigated, using emulsions prepared under various conditions. The rate was proportional to the — 1, 0.5 and 3rd power of water-phase holdup, applied voltage and water-droplet size, respectively. The experimental equation taking these contributions into account showed satisfactory agreement with the observed values. Further, the effects of surfactant, extractant and solvent on the rate were examined and it was found that the combination of the three strongly affects the rate. The energy consumption for continuous demulsification using the present apparatus is several kWh/m3-emulsion, so this coalescer can be applied to industrial processing.

AB - The continuous demulsification of W/O emulsion under applied A.C. voltage was investigated, using a tubular coalescer. The effects of water-phase holdup, applied voltage and water-droplet size on demulsification rate were investigated, using emulsions prepared under various conditions. The rate was proportional to the — 1, 0.5 and 3rd power of water-phase holdup, applied voltage and water-droplet size, respectively. The experimental equation taking these contributions into account showed satisfactory agreement with the observed values. Further, the effects of surfactant, extractant and solvent on the rate were examined and it was found that the combination of the three strongly affects the rate. The energy consumption for continuous demulsification using the present apparatus is several kWh/m3-emulsion, so this coalescer can be applied to industrial processing.

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Electrical Demulsification of W/O Emulsion by Continuous Tubular Coalescer

Abstract

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