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Evaluation of the Effects of Alcohol on De-Emulsification of Niger Delta Crude Oil Using Commercial De-Emulsifiers

DOI: 10.4236/ojogas.2017.23013, PP. 168-175

Keywords: De-Emulsification, Niger Delta Crude Oil, RP6000, Chimec 2439, Methanol, Ethanol, Separation Efficiency

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This research work evaluates the effects of alcohol on de-emulsification of Niger Delta crude oil using RP6000 and Chimec 2439 as de-emulsifiers. The laboratory measurements were carried out as per API standard. Stable emulsion was prepared using brine. The samples were de-emulsified. Methanol and ethanol were added respectively, with water and without water as modifiers. The measurements of the effect of adding alcohols on water separation efficiency were carried out using methanol to water ratio, M = 4:1 and ethanol water ratio, E = 4:1. The results show that solubility with alcohol is greater in emulsion than the solubility of alcohol without water. Some comparisons were also made based on the plots on percent water separation versus time for the two modifiers and de-emulsifiers. The maximum separation efficiency of 61% was obtained at concentration of 25% methanol, 75% RP6000, 20 ppm and Chimec 2439 gave maximum separation efficiency of 56.6% at concentration of 75%, 20 ppm at 120 minutes. Based on the results, methanol therefore gave larger effect on water separation efficiency than ethanol.


[1]  Lissant, K.J. (1988) Emulsification and De-Emulsification, a Historical Overview. Colloids and Surfaces, 29, 15.
[2]  Bhardwaj, A. and Hartland, S. (1998) Studies on Buildup of Interfacial Film at the Crude Oil/Water Interface. Journal of Dispersion Science and Technology, 19, 465-473.
[3]  Schramm, L.L. (1992) Petroleum Emulsion. In: Schramm, L.L., Ed., Emulsions Fundamentals and Applications in the Petroleum Industry, American Chemical Society, Washington DC, 1-45.
[4]  Gafonova, O.V. (2000) Role of Asphaltenes and Resins in the Stabilization of Water-in-Hydrocarbon Emulsions. MSc Thesis, University of Calgary.
[5]  Grace, R. (1992) Commercial Emulsion Breaking. In: Schramm, L.L., Ed., Emulsions Fundamentals and Applications in Petroleum Industry, American Chemical Society, Washington DC, 313-338.
[6]  Selvarajan, R., Anantha, S.S. and Robert, A.M. (2001) Aqueous Dispersion of an Oil Soluble De-Emulsifier for Breaking Crude Oil Emulsions. US Patent No. 6294093.
[7]  Staiss, F., Bohm, R. and Kupfer, R. (1991) Improved De-Emulsifier Chemistry: A Novel Approach in the Dehydration of Crude Oil, SPE Production Eng., 334-338.
[8]  NRT Science & Technology Committee (1997) Emulsion Breakers and Inhibitors for Treating Oil Spills. Fact Sheet.
[9]  Bhattacharyya, B.R. (1992) Water Soluble Polymer as Water-in-Oil De-Emulsifiers. US Patent 5100582.
[10]  Ese, M.H., Galet, L., Clausse, D. and Sjoblom, J. (2006) Properties of Langmuir Surface and Interfacial Films Built up by Asphaltenes and Resins: Influence of Chemical De-Emulsifiers. Journal of Colloid and Interface Science, 220, 293-301.
[11]  Aske, N. (2002) Characterization of Crude Oil Components, Asphaltene Aggregation and Emulsion Stability by Means of near Infrared Spectroscopy and Multivariate Analysis. Ph.D. Thesis, Norwegian University of Science and Technology, Trondheim.
[12]  Krawczyk, M.A. (1990) Mechanisms of De-Emulsification. Ph.D. Thesis, Institute of Technology.
[13]  Dodd, H.V. (1954) The Resolution of Petroleum Emulsions. Chem. Met. Eng., 28, 249-253.
[14]  Hanapi, B.M. (2006) Study on De-Emulsifier Formulation for Treating Malaysian Crude Oil Emulsion. MSc Thesis, University Technology Malaysia, Johor Bahru.
[15]  Lissant, K.J. (1983) De-Emulsification Industrial Application. Marcel Dekker, New York.
[16]  Bulatovic, S.M. (2007) Handbook of Flotation Reagents. Elsevier Science & Technology Books, Amsterdam.


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