Release:
2026. Vol. 12. № 2 (46)About the authors:
Akhat V. Gimadeev, Postgraduate student, Department of Applied Physics, Ufa University of Science and Technology, Ufa, RussiaAbstract:
This paper examines the process of non-isothermal stratification of a water-in-oil emulsion in a rectangular cavity. The model takes into account the dependence of the viscosity of the carrier phase on temperature, as well as the effect of the tightness of droplets settling. The solution of the one-dimensional problem is performed within the framework of a single-temperature approximation based on the following assumptions: the emulsion is considered monodisperse, there are no convective flows in the system. Numerical implementation is carried out in the OpenFOAM environment using a modified solver. The main focus is on the analysis of the influence of non-isothermal boundary conditions on the dynamics of the dispersed phase settling.Keywords:
References:
Badikova, A. D., Izilyanova, D. L., & Mukhamadeev, R. U. (2019). Features of water-in-oil emulsions separation by chemical reagents. Universum: Technical Sciences, (12-2), 71–75. [In Russian]
Vinogradov, V. M., & Vinokurov, V. A. (2007). Formation, Properties, and Methods of Destruction of Oil Emulsions. Publishing House “Oil and Gas” of National University of Oil and Gas “Gubkin University”. [In Russian]
Gimadeev, A. V., Musin, A. A., & Kovaleva, L. A. (2021). Numerical study of non-isothermal sedimentation of water droplets in emulsion. Bulletin of Bashkir University, 26(4), 871–876. [In Russian]
Dmitriev, A. V., Zinurov, V. E., Dmitrieva, O. S., & Dang, S. V. (2018). Modeling of separation process of water-oil emulsion in a rectangular separator. Kazan State Power Engineering University Bulletin, (3), 65–71. [In Russian]
Zinnatullin, R. R., Mullayanov, A. I., & Amekachev, R. M. (2015). Study of the features of coagulation and coalescence of emulsion droplets in an electromagnetic field. Bulletin of Bashkir State University, 20(3), 822–825. [In Russian]
Kopysov, S. P., Tonkov, L. E., & Chernova, A. A. (2015). Application of VOF and SPH to solve problems with a developed free surface. Bulletin of the Institute of Mathematics and Informatics of Udmurt State University, (2), 76–84. [In Russian]
Musin, A. A., Tukhbatova, E. R., & Anisenkova, N. A. (2017). Study of separation intensity of high-viscosity water-in-oil emulsions in a cavity with heated sidewalls. Bulletin of Bashkir University, 22(3), 622–626. [In Russian]
Petrovskiy, E. A., Solovyov, E. A., & Kolenchukov, O. A. (2018). Modern technologies of oil sludge processing. Bulletin of Belgorod State Technological University named after V. G. Shukhov, 3(4), 124–132. https://doi.org/10.12737/article_5ac24a32b29f22.54931659 [In Russian]
Khrisonidi, V. A., & Strueva, V. A. (2020). Modern methods for destroying water-oil emulsions. The Scientific Heritage, (50-3), 38–41. [In Russian]
Elektorowicz, M., Habibi, S., & Chifrina, R. (2006). Effect of electrical potential on the electro-demulsification of oily sludge. Journal of Colloid and Interface Science, 295(2), 535–541. https://doi.org/10.1016/j.jcis.2005.08.042
Fang, C. S., & Lai, P. M. C. (1995). Microwave heating and separation of water-in-oil emulsions. Journal of Microwave Power and Electromagnetic Energy, 30(1), 46–57. https://doi.org/10.15446/dyna.v81n183.34802
Hajivand, P., & Vaziri, A. (2015). Optimization of demulsifier formulation for separation of water from crude oil emulsions. Brazilian Journal of Chemical Engineering, 32(1), 107–118. https://doi.org/10.1590/0104-6632.20150321s00002755
Hao, L., Jiang, B., Zhang, L., Yang, H., Sun, Y., Wang, B., & Yang, N. (2016). Efficient demulsification of diesel-in-water emulsions by different structural dendrimer-based demulsifiers. Industrial & Engineering Chemistry Research, 55(6), 1748–1759. https://doi.org/10.1021/acs.iecr.5b04401
Kovaleva, L., Zinnatullin, R., Musin, A., Gabdrafikov, A., Sultanguzhin, R., & Kireev, V. (2021). Influence of radio-frequency and microwave electromagnetic treatment on water-in-oil emulsion separation. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 614, 126081. https://doi.org/10.1016/j.colsurfa.2020.126081
Kuzmenko, E. A., Usheva, N. V., Moyzes, O. E., & Polyakova, K. A. (2016). Dynamics of water separation in destruction of water-in-oil emulsions. IOP Conference Series: Earth and Environmental Science, 43, 012059. IOP Publishing. https://doi.org/10.1088/1755-1315/43/1/012059
Martínez-Palou, R., Cerón-Camacho, R., Chávez, B., et al. (2013). Demulsification of heavy crude oil-in-water emulsions: A comparative study between microwave and thermal heating. Fuel, 113, 407–414. https://doi.org/10.1016/j.fuel.2013.05.094
Osher, S., & Sethian, J. A. (1988). Fronts propagating with curvature-dependent speed: Algorithms based on Hamilton–Jacobi formulations. Journal of Computational Physics, 79(1), 12–49. https://doi.org/10.1016/0021-9991(88)90002-2
Perles, C. E., Volpe, P. L. O., & Bombard, A. J. (2012). Study of the cation and salinity effect on electrocoalescence of water/crude oil emulsions. Energy & Fuels, 26(11), 6914–6924. https://doi.org/10.1021/ef301433m
Rajaković, V., & Skala, D. (2006). Separation of water-in-oil emulsions by freeze/thaw method and microwave radiation. Separation and Purification Technology, 49(2), 192–196. https://doi.org/10.1016/j.seppur.2005.09.012
Razi, M., Rahimpour, M. R., Jahanmiri, A., & Azad, F. (2011). Effect of a different formulation of demulsifiers on the efficiency of chemical demulsification of heavy crude oil. Journal of Chemical & Engineering Data, 56(6), 2936–2945. https://doi.org/10.1021/je2001733
Rehfeld, S. J. (1974). Stability of hydrocarbon-in-water emulsions during centrifugation. Influence of dispersed phase composition. Journal of Colloid and Interface Science, 46(3), 448–459.
Rodionova, G., Keleşoğlu, S., & Sjöblom, J. (2014). AC field induced destabilization of water-in-oil emulsions based on North Sea acidic crude oil. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 448, 60–66. https://doi.org/10.1016/j.colsurfa.2014.01.019
Romanova, Yu. N., Maryutina, T. А., Musina, N. S., & Spivakov, B. Y. (2022). Application of ultrasonic treatment for demulsification of stable water-in-oil emulsions. Journal of Petroleum Science and Engineering, 209, 109977. https://doi.org/10.1016/j.petrol.2021.109977
Tan, W., Yang, X. G., & Tan, X. F. (2007). Study on demulsification of crude oil emulsions by microwave chemical method. Separation Science and Technology, 42, 1367–1377. https://doi.org/10.1080/01496390701193736
Tarantsev, K. V., & Tarantseva, K. R. (2017). Influence of electric field frequency on the process of destruction of water-oil emulsions in electric dehydrators. Chemical and Petroleum Engineering, 53(7), 515–518. https://doi.org/10.1007/s10556-017-0373-z
