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Volume 13
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10.3390/resources13060086
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Article

Experience in Processing Alternative Crude Oils to Replace Design Oil in the Refinery

by
Dicho Stratiev
1,2,*,
Ivelina Shiskova
1,
Vesislava Toteva
3,
Georgi Georgiev
1,
Rosen Dinkov
1,
Iliyan Kolev
1,
Ivan Petrov
1,
Georgi Argirov
1,
Veselina Bureva
4,
Simeon Ribagin
2,5,
Krassimir Atanassov
2,6,
Svetoslav Nenov
7,
Sotir Sotirov
6,
Radoslava Nikolova
8 and
Anife Veli
8
1
LUKOIL Neftohim Burgas, 8104 Burgas, Bulgaria
2
Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Georgi Bonchev 105, 1113 Sofia, Bulgaria
3
Department Chemical Technologies, University of Chemical Technology and Metallurgy, Kliment Ohridski 8, 1756 Sofia, Bulgaria
4
Department of Computer Systems and Technologies, University Prof. Dr. Assen Zlatarov, Professor Yakimov 1, 8010 Burgas, Bulgaria
5
Department of Health and Pharmaceutical Care, University Prof. Dr. Assen Zlatarov, Professor Yakimov 1, 8010 Burgas, Bulgaria
6
Laboratory of Intelligent Systems, University Prof. Dr. Assen Zlatarov, Professor Yakimov 1, 8010 Burgas, Bulgaria
7
Department of Mathematics, University of Chemical Technology and Metallurgy, Kliment Ohridski 8, 1756 Sofia, Bulgaria
8
Central Research Laboratory, University Prof. Dr. Assen Zlatarov, Professor Yakimov 1, 8010 Burgas, Bulgaria
*
Author to whom correspondence should be addressed.
Resources 2024, 13(6), 86; https://doi.org/10.3390/resources13060086
Submission received: 19 February 2024 / Revised: 13 June 2024 / Accepted: 17 June 2024 / Published: 20 June 2024
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Abstract

A comprehensive investigation of a highly complex petroleum refinery (Nelson complexity index of 10.7) during the processing of 11 crude oils and an imported atmospheric residue replacing the design Urals crude oil was performed. Various laboratory oil tests were carried out to characterize both crude oils, and their fractions. The results of oil laboratory assays along with intercriteria and regression analyses were employed to find quantitative relations between crude oil mixture quality and refining unit performance. It was found that the acidity of petroleum cannot be judged by its total acid number, and acid crudes with lower than 0.5 mg KOH/g and low sulphur content required repeated caustic treatment enhancement and provoked increased corrosion rate and sodium contamination of the hydrocracking catalyst. Increased fouling in the H-Oil hydrocracker was observed during the transfer of design Urals crude oil to other petroleum crudes. The vacuum residues with higher sulphur, lower nitrogen contents, and a lower colloidal instability index provide a higher conversion rate and lower fouling rate in the H-Oil unit. The regression equations developed in this work allow quantitative assessment of the performance of crucial refining units like the H-Oil, fluid catalytic cracker, naphtha reformer, and gas oil hydrotreatment based on laboratory oil test results.
Keywords: crude oil; oil acidity; asphaltenes; PIONA; hydrocracking; FCC; intercriteria analysis; fouling crude oil; oil acidity; asphaltenes; PIONA; hydrocracking; FCC; intercriteria analysis; fouling

Correction Statement

This article has been republished with a minor correction to resolve typographical errors. This change does not affect the scientific content of the article.

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MDPI and ACS Style

Stratiev, D.; Shiskova, I.; Toteva, V.; Georgiev, G.; Dinkov, R.; Kolev, I.; Petrov, I.; Argirov, G.; Bureva, V.; Ribagin, S.; et al. Experience in Processing Alternative Crude Oils to Replace Design Oil in the Refinery. Resources 2024, 13, 86. https://doi.org/10.3390/resources13060086

AMA Style

Stratiev D, Shiskova I, Toteva V, Georgiev G, Dinkov R, Kolev I, Petrov I, Argirov G, Bureva V, Ribagin S, et al. Experience in Processing Alternative Crude Oils to Replace Design Oil in the Refinery. Resources. 2024; 13(6):86. https://doi.org/10.3390/resources13060086

Chicago/Turabian Style

Stratiev, Dicho, Ivelina Shiskova, Vesislava Toteva, Georgi Georgiev, Rosen Dinkov, Iliyan Kolev, Ivan Petrov, Georgi Argirov, Veselina Bureva, Simeon Ribagin, and et al. 2024. "Experience in Processing Alternative Crude Oils to Replace Design Oil in the Refinery" Resources 13, no. 6: 86. https://doi.org/10.3390/resources13060086

APA Style

Stratiev, D., Shiskova, I., Toteva, V., Georgiev, G., Dinkov, R., Kolev, I., Petrov, I., Argirov, G., Bureva, V., Ribagin, S., Atanassov, K., Nenov, S., Sotirov, S., Nikolova, R., & Veli, A. (2024). Experience in Processing Alternative Crude Oils to Replace Design Oil in the Refinery. Resources, 13(6), 86. https://doi.org/10.3390/resources13060086

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