Electrostatic and hydrodynamic separation of aqueous drops in a flowing viscous oil

Chemical Engineering and Processing

Volumn 41, Issue 8, 2002, Pages 649-657

  Eow, John S ^a   Ghadiri, Mojtaba ^b   Sharif, Adel O ^a  

^a UNIVERSITY OF SURREY   (United Kingdom)

^b UNIVERSITY OF LEEDS   (United Kingdom)

Author keywords

Aqueous in oil dispersion; Dipole attraction; Drag force; Drop drop coalescence; Electrocoalescence; Gravitational separation; Pulsed direct current electric fields

Indexed keywords

COALESCENCE; DENSITY OF LIQUIDS; ELECTRIC FIELD EFFECTS; ELECTROSTATICS; HYDRODYNAMICS; SEDIMENTATION; SEPARATION; SHORT CIRCUIT CURRENTS; VISCOUS FLOW;

HYDRODYNAMIC SEPARATION; VISCOUS OILS;

DROP BREAKUP;

DROPLET; ELECTROSTATICS; HYDRODYNAMICS; LIQUID-LIQUID SEPARATION; OIL; VISCOUS FLOW;

EID: 0036707389     PISSN: 02552701     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0255-2701(01)00183-0     Document Type: Article

References (27)

1. Clayton W. The Theory of Emulsions and Their Technical Treatment. fifth ed:1954;255-260 J & A Churchill Ltd, London.
2. Guthrie V.B. Petroleum Products Handbook. first ed:1960;McGraw-Hill, New York.
3. Godfrey J.C., Slater M.J. Liquid-Liquid Extraction Equipment. 1994;Wiley, London.
4. Treybal R.E. Mass Transfer Operation. third ed:1980;McGraw-Hill, New York.
5. Svarovsky L. Solid-Liquid Separation. second ed:1981;Butterworths, London.
6. Geankoplis C.J. Transport Processes and Unit Operations. 1993;815-819 Prentice-Hall, New Jersey.
7. Thompson D.G., Taylor A.S., Graham D.E. Emulsification and demulsification related to crude oil production. Coll. Surf. 15:1985;175-189.
8. Fingas M. Water-in-oil emulsion formation: a review of physics and mathematical modelling. Spill Sci. Technol. Bull. 2:(1):1995;55-59.
9. Nelson R.D. fourth ed Powders, Handling-Dispersion of Powders in Liquids, Kirk-Othmer Encyclopedia of Chemical Technology. 19:1996;1093-1112.
10. Eow J.S., Ghadiri M., Sharif A.O., Williams T.J. Electrostatic enhancement of coalescence of water droplets in oil: a review of the current understanding. Chem. Eng. J. 84:(3):2001;173-192.
11. J.S. Eow, M. Ghadiri, Electrostatic enhancement of coalescence of water droplets in oil: a review of the technology, Chem. Eng. J. (2001) in press.
12. Bailes P.J., Larkai S.K.L. An experimental investigation into the use of high voltage D.C. fields for liquid phase separation. Trans. IChemE. 59:(4):1981;229-237.
13. Bailes P.J., Larkai S.K.L. Liquid phase separation in pulsed D.C. fields. Trans. IChemE. 60:(2):1982;115-121.
14. Bailes P.J., Larkai S.K.L. Influence of phase ratio on electrostatic coalescence of water-in-oil dispersions. Chem. Eng. Res. Des. 62:1984;33-38.
15. Bailes P.J., Larkai S.K.L. Polarisation effects in liquid phase separation by pulsed electric fields. IChemE Symp. Series. 94:1984;235-245.
16. Bailes P.J., Dowling P.D. The production of pulsed E.H.T voltages for electrostatic coalescence. J. Electrostat. 17:(3):1985;321-328.
17. Taylor S.E. Theory and practice of electrically-enhanced phase separation of water-in-oil emulsions. Trans. IChemE. 74:(A):1996;526-540.
18. Figueroa C.E., Wagner J.P. A liquid membrane approach for removal of metallic species from resinous extracts under imposed electrical fields. Bioresource Tech. 60:1997;153-160.
19. Bird R.B., Stewart W.E., Lightfoot E.N. Transport Phenomena. 1960;56-60 Wiley, New York.
20. Clift R., Grace J.R., Weber M.E. Bubbles, Drops and Particles. 1978;125-130 Academic Press, New York.
21. Atten P. Electrocoalescence of water droplets in an insulating liquid. J. Electrostat. 30:1993;259-270.
22. Waterman L.C. Electrical coalescers. Chem. Eng. Prog. 61:(10):1965;51-57.
23. Bailes P.J., Stitt E.H. Column liquid contacting with vigorous agitation balanced by electrostatic coalescence. Chem. Eng. Res. Des. 65:1987;514-523.
24. Williams T.J., Bailey A.G. Changes in the size distribution of a water-in-oil emulsion due to electric field induced coalescence. IEEE Trans. Industry Appl. 1A-22:(3):1986;536-541.
25. Eow J.S., Ghadiri M., Sharif A. Deformation and break-up of aqueous drops in dielectric liquids in high electric fields. J. Electrostat. 51-52:2001;463-469.
26. J.S. Eow, M. Ghadiri, C.S. Hodges, Investigations into the motion, deformation and break-up of aqueous drops in oil under high electric fields, Chem. Eng. Sci., submitted for publication.
27. J.S. Eow, M. Ghadiri, The influence of an externally applied electric field on an aqueous-oil interface, Chem. Eng. Process., submitted for publication.