Challenges in petroleum characterization—A review
I Shishkova, D Stratiev, IV Kolev, S Nenov… - Energies, 2022 - mdpi.com
252 literature sources and about 5000 crude oil assays were reviewed in this work. The
review has shown that the petroleum characterization can be classified in three categories …
review has shown that the petroleum characterization can be classified in three categories …
Trialkylmethylammonium molybdate ionic liquids as novel oil-soluble precursors of dispersed metal catalysts for slurry-phase hydrocracking of heavy oils
Y Ma, J Zhang, W Wu, Z Cai, Y Cao, K Huang… - Chemical Engineering …, 2022 - Elsevier
Slurry-phase hydrocracking is an effective technology for the conversion of heavy oils to
clean and light fuels. Herein, trialkylmethylammonium molybdate ionic liquids (ILs) with …
clean and light fuels. Herein, trialkylmethylammonium molybdate ionic liquids (ILs) with …
Intercriteria analysis to diagnose the reasons for increased fouling in a commercial ebullated bed vacuum residue hydrocracker
D Stratiev, I Shishkova, R Dinkov, I Kolev, G Argirov… - ACS …, 2022 - ACS Publications
The intercriteria analysis developed on the base of intuitionistic fuzziness and index
matrices was applied to evaluate processing data of the LUKOIL Neftohim Burgas H-Oil …
matrices was applied to evaluate processing data of the LUKOIL Neftohim Burgas H-Oil …
Prediction of petroleum viscosity from molecular weight and density
Abstract 165 crude oils with viscosity, density, and molecular weight variation in the range
0.54–24135cP; 0.746–1.016 g/cm 3; 117–579 g/mol respectively were examined for …
0.54–24135cP; 0.746–1.016 g/cm 3; 117–579 g/mol respectively were examined for …
Oxidation thermolysis kinetics of asphaltenes with various chemical prehistory
In this research, six various asphaltenes extracted from crude oil mixtures of three Russian
refinery plants and some heavy residues of these plants were studied with applying …
refinery plants and some heavy residues of these plants were studied with applying …
A review of thermal cracking, hydrocracking, and slurry phase hydroconversion kinetic parameters in lumped models for upgrading heavy oils
B Browning, P Alvarez, T Jansen, M Lacroix… - Energy & …, 2021 - ACS Publications
Reaction constants for vacuum gas oil (VGO) hydrocracking and slurry phase
hydroconversion of residues are calculated and positioned with respect to results from the …
hydroconversion of residues are calculated and positioned with respect to results from the …
Ligand structure effect in oil-soluble phosphorus-containing molybdenum precursors for slurry-phase hydrocracking of heavy oil
Slurry-phase hydrocracking for heavy oil upgrading is a challenging technology in the
petroleum refining industry. We prepared various P-containing Mo precursors to elucidate …
petroleum refining industry. We prepared various P-containing Mo precursors to elucidate …
Commercial ebullated bed vacuum residue hydrocracking performance improvement during processing difficult feeds
BE Georgiev, DS Stratiev, GS Argirov, A Nedelchev… - Applied Sciences, 2023 - mdpi.com
The Urals and Siberian vacuum residues are considered difficult to process in the ebullated
bed hydrocracking because of their increased tendency to form sediments. Their achievable …
bed hydrocracking because of their increased tendency to form sediments. Their achievable …
Surrogate formulation and molecular characterization of sulfur species in vacuum residues using APPI and ESI FT-ICR mass spectrometry
Vacuum residues (VR) are the bottom of the barrel products left after vacuum distillation of
crude oils. VR are primarily used as feedstock for production of syn-gas and hydrogen via …
crude oils. VR are primarily used as feedstock for production of syn-gas and hydrogen via …
[HTML][HTML] Mitigation of Asphaltene Deposit Formation via Chemical Additives: A Review
D Stratiev, R Nikolova, A Veli, I Shishkova, V Toteva… - Processes, 2025 - mdpi.com
The deposition of asphaltenes in the petroleum industry has been found to be a significant
factor affecting the profitability of petroleum production and refining. For this reason, many …
factor affecting the profitability of petroleum production and refining. For this reason, many …