Electrical dewaxing of the oil raffinate fraction 420-490 оС
https://doi.org/10.31660/0445-0108-2023-2-97-115
Abstract
Industrial dewaxing of oil raffinates remains the most expensive, complex, low-temperature process in the production of mineral base oils in refining. The development of an alternative, simpler and less energy-intensive method of dewaxing is an urgent task.
This article investigates the possibility of dewaxing oil refining in the presence of different classes of depressor additives in a constant inhomogeneous electric field at positive temperatures.
A correlation was established between the depressant properties of the additives and their effectiveness in electric field dewaxing.
The maximum depressant effect of the additive in the oil raffinate corresponds to the highest indicators of the electrical dewaxing process.
The effect of separating oil raffinate in an electric field with ester additives depends on the chemical structure of the dicarboxylic acids used in their synthesis.
The nature of the distribution of the additive between the phases has been revealed by changes in the pour point of the resulting dewaxed oil.
This article shows the relationship between the magnitude of the electrical charge of paraffin crystals and the time of dewaxing. This is related to the polarisation of the double electric layer of particles in an electric field and their subsequent dipole-dipole interaction.
About the Authors
А. L. Savchenkov
Industrial University of Tyumen
Russian Federation
Russian Federation
Andrey L. Savchenkov, Candidate of Engineering, Associate Professor at the Department of Oil and Gas Processing
Tyumen
S. G. Agaev
Industrial University of Tyumen
Russian Federation
Russian Federation
Slavik G. Agaev, Doctor of Engineering, Professor, Chief Researcher at the Department of Oil and Gas Processing
Tyumen
N. S. Yakovlev
Industrial University of Tyumen
Russian Federation
Russian Federation
Nikolay S. Yakovlev, Candidate of Engineering, Associate Professor at the Department of Oil and Gas Processing
Tyumen
L. V. Taranova
Industrial University of Tyumen
Russian Federation
Russian Federation
Lyubov V. Taranova, Candidate of Engineering, Associate Professor at the Department of Oil and Gas Processing
Tyumen
References
1. Savchenkov, A. L., Agaev, S. G., Deryugina, O. P., Skvortsova, E. N., & Mozyrev, A. G. (2022). Separation of solid paraffins from heavy oil fractions in an electric field. Oil and Gas Studies, (3), pp. 83-95. (In Russian). DOI: 10.31660/0445-0108-2022-3-83-95
2. Pereverzev, A. N., Bogdanov, N. F., & Roshchin, Yu. N. (1973). Proizvodstvo parafinov. Moscow, Khimiya Publ., 224 p. (In Russian).
3. Agaev, S. G., & Khalin, A. N. (2001). Dewaxing of lube stock in an electric field. Chemistry and Technology of Fuels and Oils, (3), pp. 38-42. (In Russian).
4. Agaev, S. G., Yakovlev, N. S., & Zima, E. Yu. (2011). Dewaxing of summer diesel fuel of Antipinsky refinery in a high voltage constant electric field. Neftepererabotka i neftekhimiya. Nauchno-tekhnicheskie dostizheniya i peredovoy opyt, (10), pp. 6-8. (In Russian).
5. Agaev, S. G., & Yakovlev, N. S. (2018). Distribution of n-alkanes in the products of electric dewaxing of diesel fuel. Petroleum Chemistry, 58(3), pp. 174-178. (In English). DOI: 10.1134/S0965544118030027
6. Agaev, S. G. & Gultyaev, S. V. (2006). Elektrodeparafinizatsiya dizel'nykh topliv. Izvestiya vysshikh uchebnykh zavedeniy. Neft' i gaz, (3(57)), pp. 72-76. (In Russian).
7. Roa, M., Cruz-Duarteb, J. M., & Correa, R. (2021). Study of an asphaltene electrodeposition strategy for Colombian extraheavy crude oils boosted by the simultaneous effects of an external magnetic field and ferromagnetic composites. Fuel, 287. (In English). Available at: https://doi.org/10.1016/j.fuel.2020.119440
8. Li, B., Sun, Z., Wang, Z., Wang, J., Wang, Z., Dou, X.,… Liu, H. (2019). Effects of the particle concentration on the electrodehydration of simulated SAGD produced ultra-heavy oil. Chemical Engineering Research and Design, (151), pp. 157-167. (In English). DOI: 10.1016/j.cherd.2019.09.004
9. Strelets, L. A., & Ilyin, S. O. (2021). Effect of enhanced oil recovery on the composition and rheological properties of heavy crude oil. Journal of Petroleum Science and Engineering, 203. (In English). Available at: https://doi.org/10.1016/j.petrol.2021.108641
10. Kralova, I., Sjöblom, J., Øye, G., Simon, S., Grimes, B. A., & Paso, K. (2011). Heavy Crude Oils/Particle Stabilized Emulsions. Advances in Colloid and Interface Science, 169(2), pp. 106-127. (In English). DOI: 10.1016/j.cis.2011.09.001
11. Hekmatifar, M., Toghraie, D., Khosravi, A., Saberi, F., Soltani, F., Sabetvand, R., & Goldanlou, A. Sh. (2020). The study of asphaltene desorption from the iron surface with molecular dynamics method. Journal of Molecular Liquids, 318, pp. 10-19. (In English). DOI: 10.1016/j.molliq.2020.114325
12. Castillo, J., Vargas, V., Piscitelli, V., Ordoñez, L., & Rojas, H. (2017). Study of asphaltene adsorption onto raw surfaces and iron nanoparticles by AFM force spectroscopy. Journal of Petroleum Science and Engineering, 151, pp. 248-253. (In Eng-lish). DOI: 10.1016/j.petrol.2017.01.019
13. Savchenkov, A. L., & Agaev, S. G. (1989). Vliyanie maslorastvorimykh prisadok na elektrokineticheskie i depressornye svoystva distillyatnogo rafinata iz smesi neftey Zapadnoy Sibiri. Neft' i gaz, (11), pp. 41-45. (In Russian).
14. Savchenkov, A. L., & Agaev, S. G. (1991). Distribution of ester pour-point depressants in oil raffinate. Chemistry and Technology of Fuels and Oils, 27(5), pp. 274-275. (In English).
15. Agaev, S. G., & Savchenkov, A. L. (1996). Electrodeparaffinization of Urengoy oil. Chemistry and Technology of Fuels and Oils, (6), рр. 18-19. (In Russian).
16. Agaev, S. G., & Taranova, L. V. (1986). Dielectric and electrophoretic properties of wax dispersions in the presence of pour depressants. Chemistry and Technology of Fuels and Oils, 22(10), pp. 541-545. (In English).
17. Agaev S. G. & Taranova, L. V. (1986). Uluchshenie nizkotemperaturnykh svoystv vysokoparafinistykh masel s pomoshch'yu kompozitsiy slozhnykh efirov pentaeritrita i depressatora AzNII. Izvestiya vysshikh uchebnykh zavedeniy. Neft' i gaz, (1), pp. 39-43. (In Russian).
Review
For citations:
Savchenkov А.L., Agaev S.G., Yakovlev N.S., Taranova L.V. Electrical dewaxing of the oil raffinate fraction 420-490 оС. Oil and Gas Studies. 2023;(2):97-115. (In Russ.) https://doi.org/10.31660/0445-0108-2023-2-97-115
Views:
168
Email this article 
Post a Comment 