An experimental study of stability of oil–water emulsion |
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| Affiliation: | 1. Petroleum Engineering Program, Department of Ocean Engineering, Indian Institute of Technology Madras, Chennai 600 036, India;2. School of Petroleum Technology, Pandit Deendayal Petroleum University, Gandhinagar 382007, India;3. Department of Energy Resources Engineering, Inha University, Incheon 402-751, South Korea;1. Department of Chemical Engineering, King Faisal University, Saudi Arabia;2. Department of Chemical Engineering, King Fahd University of Petroleum & Minerals, Saudi Arabia;3. Department of Mechanical Engineering, King Fahd University of Petroleum & Minerals, Saudi Arabia;4. Schlumberger Dhahran Center for Carbonate Research, Saudi Arabia;5. Saudi Aramco, R&D, Saudi Arabia;1. Particle and Interfacial Technology Group, Department of Applied Analytical and Physical Chemistry, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium;2. NMR and Structure Analysis Unit, Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Campus Sterre, S4, Krijgslaan 281, 9000, Ghent, Belgium;1. Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada;2. Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada;3. Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada |
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| Abstract: | There has been much interest in alternative fuels made from coal which is much more abundant than oil. The coal–oil–water slurry is a new type of oil-based synfuel composed of finely pulverized coal, oil and water. It has lower viscosity, lower ignition point and higher heating value than coal–water slurry. The preparation of stable water-in-oil (W/O) emulsion is critical for the success of production of stable coal–oil–water slurry. The present study was undertaken to experimentally investigate the effects of different process variables on emulsion stability. The emulsion was prepared using 100 ml colloid mill with sorbitan monooleate (SM) as emulsifier. The variables studied include emulsifier dosage, ratio of oil to water, stirring intensity, emulsifying temperature and mixing time. The results showed that the optimum process conditions are: emulsifier dosage, 0.5%; oil to water ratio, 1:1; stirring intensity, 2500 rpm; and mixing temperature, 30 °C. |
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