Influence of feedstock composition on the pressure drop buildup in gas oil hydrotreater

Ivan A. Mik; Oleg P. Klenov; Ivan S. Golubev; Pavel P. Dik; Sergey I. Reshetnikov; Aleksandr S. Noskov

doi:10.15826/chimtech.2024.11.4.16

Influence of feedstock composition on the pressure drop buildup in gas oil hydrotreater

Ivan A. Mik, Oleg P. Klenov, Ivan S. Golubev, Pavel P. Dik, Sergey I. Reshetnikov, Aleksandr S. Noskov

Abstract

In this work two samples of solid particulates obtained from the intergranular space of the guard beds catalyst of industrial gas oil hydrotreating reactors were investigated. The hydrotreating reactors were operated on feedstock of different composition. One of the samples of solid particulates was obtained during hydrotreating of feedstock containing a large amount of sodium and calcium. The compositions of the samples of solid particulates were determined. Quantitative elemental and structural analyses were carried out. As a result, the formed solid particulates contained a large amount of sodium chloride, sulfate and calcium sulfide. The qualitative calculations show that the pressure drop in the guard bed of five-segment rings with a diameter of 16.0 mm, due to the deposition of solid particulates in the intergranular space, increases by 108% more than the pressure drop during hydrotreating of feedstock not containing calcium and sodium compounds (under the same operating modes of the hydrotreating reactors and operating time). The obtained results on the effect of the feedstock composition on the pressure drop buildup can be used in optimizing the loading of reactors and in other oil refining processes.

Keywords

hydrotreating, guard-bed, particulates trapping, catalyst bed fouling, pressure drop buildup

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References

Budukva SV, et al. Deactivation of hydrotreating catalysts (A review). Katal v promyshlennosti. 2022;22(3):38–65. doi:10.18412/1816-0387-2022-3-38-65

Mik IA, et al. Guard of hydrotreating catalysts of oil fractions from solid particulates: experimental studies and calculation. Katal v promyshlennosti. 2023;23(6):70–79. doi:10.18412/1816-0387-2023-6-70-79

Hamidipour M., Larachi F., Ring Z. Monitoring Filtration in Trickle Beds Using Electrical Capacitance Tomography. Ind Eng Chem Res. 2009;48(3):1140–1153. doi:10.1021/ie800810t

Robinson PR, Dolbear GE. Hydrotreating and Hydrocracking: Fundamentals. Practical Advances in Petroleum Processing. New York, NY: Springer New York. 177–218. doi:10.1007/978-0-387-25789-1_7

Dalai A.K. et al. Deposition of fine particles during hydrotreating of oil sands bitumen-derived heavy gas oil in a packed bed reactor: Impact of process parameters and surface charge. Ind Eng Chem Res. 2021;60(43):15464–15471. doi:10.1021/acs.iecr.1c03000

Mik IA, et al. Optimization of grading guard systems for trapping of particulates to prevent pressure drop buildup in gas oil hydrotreater. Fuel. 2021;285. doi:10.1016/j.fuel.2020.119149

Nadeina KA, et al. Influence of alumina precursor on silicon capacity of NiMo/γ-Al2O3 guard bed catalysts for gas oil hydrotreating. Catal Today Elsevier BV. 2019;353:53–62. doi:10.1016/j.cattod.2019.10.028

Nadeina KA, et al. Guard bed catalysts for silicon removal during hydrotreating of middle distillates. Catal Today. 2019;329:53–62. doi:10.1016/j.cattod.2018.11.075

Edouard D, Iliuta I, Larachi F. Role of gas phase in the deposition dynamics of fine particles in trickle-bed reactors. Chem. Eng. Sci. 2006; 61(12):3875-3884. doi:10.1016/j.ces.2006.01.031

Rana R, et al. Deposition of fine particles of gas oil on hydrotreating catalyst: Impact of process parameters and filtration trends. Fuel Process Technol. 2018;171:223–231. doi:10.1016/j.fuproc.2017.09.019

Rana R, et al. The Impact of Process Parameters on the Deposition of Fines Present in Bitumen-Derived Gas Oil on Hydrotreating Catalyst. Energy and Fuels. Am Chem Soc. 2017;31(6):5969–5981. doi: 10.1021/acs.energyfuels.7b00554

Moyse BM. Raschig ring hds catalysts reduce pressure drop. Oil Gas J. 1984;82(53):164–166.

Polischuk C, et al. Impact of Fine Solids on Hydrotreating of Bitumen-Derived Gas Oil. Ind Eng Chem Res. 2023;62(2):936–948. doi:10.1021/acs.iecr.2c04241

Speight JG. Fouling in refineries. Fouling in Refineries. 2015):1–538. doi:10.1016/C2013-0-19044-7

J. Ancheyta. Deactivation of Heavy Oil Hydroprocessing Catalysts: Fundamentals and Modeling. 2016:336.

Wang W, et al. Different Mechanisms of Coke Precursor Formation in Thermal Conversion and Deep Hydroprocessing of Vacuum Residue. Energy Fuels. 2016. doi:10.1021/acs.energyfuels.6b01488

Ancheyta J. Modeling and Simulation of Catalytic Reactors for Petroleum Refining. Modeling and Simulation of Catalytic Reactors for Petroleum Refining. 2011.

Ancheyta J, Muñoz JAD, Macías MJ. Experimental and theoretical determination of the particle size of hydrotreating catalysts of different shapes. Catal Today Elsevier, 2005;109(1–4):120–127. doi: 10.1016/j.cattod.2005.08.009

Felder RM. Catalytic reactor design, by M. Orhan Tarhan. McGraw-Hill, 1983. AIChE Journal. 1984;30(1):173–173.

Macías MJ, Ancheyta J. Simulation of an isothermal hydrodesulfurization small reactor with different catalyst particle shapes. Catal. Today. 2004;98(1):243–252. doi:10.1016/j.cattod.2004.07.038

DOI: https://doi.org/10.15826/chimtech.2024.11.4.16

Copyright (c) 2024 Ivan A. Mik, Oleg P. Klenov, Ivan S. Golubev, Pavel P. Dik, Sergey I. Reshetnikov, Aleksandr S. Noskov

This work is licensed under a Creative Commons Attribution 4.0 International License.

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