Data processing: measuring – calibrating – or testing – Measurement system – Performance or efficiency evaluation
Reexamination Certificate
2008-05-13
2008-05-13
Raymond, Edward (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Performance or efficiency evaluation
C204S556000
Reexamination Certificate
active
11302800
ABSTRACT:
A method for quantitative evaluation of emulsion stability using Critical Electric Field (CEF) determinations over a range of conditions, such as a range of temperatures, demulsifier compositions, or demulsifier concentrations. The method includes determining the CEF for a series of emulsions that differ substantially only in their internal phase volume ratio. A plot of CEF values as a function of the inverse of the internal phase volume ratio is characterized by a linear slope. Using the slope, a theoretical CEF value can be determined by extrapolating to where the inverse of the internal phase volume ratio is about one. The slope for a given emulsion series is associated with the relative energy barrier to flocculation and the theoretical critical electric field for a given emulsion series is associated with the relative energy barrier to coalescence. Comparative studies are performed using this method.
REFERENCES:
patent: 4624763 (1986-11-01), Chimenti
patent: 4981569 (1991-01-01), Schugerl et al.
patent: 5283001 (1994-02-01), Gregoli et al.
patent: 5435920 (1995-07-01), Penth
patent: 5580464 (1996-12-01), Bailes
patent: 5582700 (1996-12-01), Bryning et al.
patent: 5607574 (1997-03-01), Hart
patent: 5868939 (1999-02-01), Oder et al.
patent: 6068054 (2000-05-01), Bragg
patent: 6860979 (2005-03-01), Sams
patent: 2002/0101244 (2002-08-01), Dahms
patent: 2003/0206024 (2003-11-01), Murphy, Jr. et al.
Journal of Membrane Science vol. 128, May 1997; pp. 1-6; XP004068489; “Break-down of liquid membrane emulsion under high electric field”; Lu Gang, Lu QiongHua, Li PanSheng.
Proceedings of 2002 IEEE 14thInternational Conference on Dielectric Liquids (ICDL 2002), Graz (Austria), Jul. 7-12, 2002; “Instability of electrically stressed water droplets in oil”; Gunnar Berg, Lars E. Lundgaard, et al.
Colloid and Surfaces A; pp. 33-47; “Crude oil emulsions in high electric fields as studied by dielectric spectroscopy. Influence of interaction between commercial and indigenous surfactants”; Harald Fordedal, et al.
Journal of Colloid and Interface Science vol. 225, pp. 494-504; May 2000; “Quantitative Determination of Asphaltenes and Resins in Solution by Means of Near-Infrared Spectroscopy. Correlations to Emulsion Stability”; Harald Kallevik, et al.
The PCT International Search Report; Apr. 2005.
PCT/US2005/045261, International Preliminary Report on Patentability Jun. 21, 2007.
Kallevik H, Olav M Kvalheim and Johan Sjöblom, Quantitative determination of asphaltenes and resins in solution by means of near-infrared spectroscopy. Correlations to emulsion stability; Journal of Colloid and Interface Science 494-504 (2000), May 25, 1999, Staoil R&D Centre, Rotvoll, N-7005 Trondheim, Norway and Department of Chemistry, University of Bergen Allegaten 41 41, N-5007 Bergen, Norway.
Fordedal Harald, Yannick Schildberg, Johan Sjöblom and Jean-Luc Volle: Crude oil emulsions in high electric fields as studied by dielectric spectroscopy. Influence of interaction between commercial and indigenous surfactants, Colloids and Surfaces A: Physicochemical and Engineering Aspects 106 (1196 33-47Mar. 10, 1995.
PCT International Preliminary Report on Patentability Jun. 21, 2007.
Champion Technologies Inc.
Charioui Mohamed
Raymond Edward
Streets Jeffrey L.
Streets & Steele
LandOfFree
Quantitative evaluation of emulsion stability based on... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Quantitative evaluation of emulsion stability based on..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantitative evaluation of emulsion stability based on... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3932573