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Non-stationary mathematical modeling of a straight-run gasoline hydrotreating reactor
| Title | Non-stationary mathematical modeling of a straight-run gasoline hydrotreating reactor |
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| Authors | A. I. Bayazitova1, E. O. Shchepotyev1, I. M. Gubaydullin1, 2 1USPTU 2Institute of Petrochemistry and Catalysis UFRC RAS |
| Annotation | A non-stationary multiscale mathematical model of the hydrotreating process of straight-run gasoline in a stationary catalyst layer is proposed. The model combines chemical kinetics, diffusion and thermal conductivity inside a porous granule, convective and radial transport in a layer, thermal balance and pressure change. The relationship between the scales is determined by the conditions of mass and heat exchange on the surface of the pellet. Concentrations and temperature are considered as functions of time, longitudinal and radial coordinates of the reactor, and an additional spatial coordinate is introduced inside the pellet. After spatial discretization by the finite volume method, the initial system of partial differential equations is reduced to a large stiff system of ordinary differential equations. The implicit BDF and Radau IIA methods are used for integration. |
| Keywords | hydrotreating, non-stationary model, fixed layer, porous granule, heat and mass transfer, line method, BDF, Radau. |
| Citation | Bayazitova A. I., Shchepotyev E. O., Gubaydullin I. M. ''Non-stationary mathematical modeling of a straight-run gasoline hydrotreating reactor'' [Electronic resource]. Mathematical modeling, numerical methods, and software systems: Collection of materials from the 12th All‑Russian Scientific Youth School‑Seminar named after E. V. Voskresensky (Saransk, July 21–24, 2026). - pp. 23-28. Available at: https://conf.svmo.ru/files/2026/papers/paper66.pdf. - Date of access: 25.09.2026. |
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