Results 11 to 20 of about 288,332 (292)

Heat Treatment Condition Influence on Novokuibyshevsk Vacuum Residue Component Composition [PDF]

open access: yes, 2014
The article presents the information about thermal degradation of Novokuibyshevsk vacuum residue and change of products composition during this process. The optimal conditions for the thermal destruction of vacuum residue components were established. The
Golovko, A.   +4 more
core   +2 more sources

The Effect of Carbon Nanofibers on the Hydrocracking of Vacuum Residue in the Presence of Formic Acid

open access: yesEnergies, 2023
This study was devoted to the processing of vacuum residue to produce lighter oil fractions, such as gasoline and diesel fuel. The hydrocracking and catalytic hydrocracking of vacuum residue in the presence of formic acid (FA) were performed in the ...
Vladimir V. Chesnokov, Pavel P. Dik
doaj   +1 more source

Commercial Ebullated Bed Vacuum Residue Hydrocracking Performance Improvement during Processing Difficult Feeds

open access: yesApplied Sciences, 2023
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 conversion rate reported in the literature is 60%.
Borislav Enchev Georgiev   +14 more
doaj   +1 more source

Deasphaltening and Hydrodesulfurization of Basrah Vacuum Residue

open access: yesIraqi Journal of Chemical and Petroleum Engineering, 2001
Abdul-Halim A-K Mohammed   +1 more
doaj   +2 more sources

Cracking Behavior of Heavy Petroleum Polar Species in Collision-Induced Dissociation and Thermal Visbreaking

open access: yesEnergies, 2023
In thermal cracking and collision-induced dissociation (CID) processes, molecules/ions mainly undergo cleavage reactions. In theory, the cleavage reaction is preferred for weak bonds in both processes.
Haiyang Yu   +5 more
doaj   +1 more source

Oxidation of Vacuum Residue with the Addition of Crumb Rubber

open access: yesEurasian Chemico-Technological Journal, 2022
The actual problem of the oil refining industry is to improve the process of oxidation of heavy oil residues and the properties of oil bitumen. One way to solve the problem is to add modifiers.
A. Zhambolova   +3 more
doaj   +1 more source

Thermal cracking of atmospheric residue versus vacuum residue

open access: yesFuel Processing Technology, 2018
Abstract Current practice subjects atmospheric residue (AR) to vacuum distillation, while feeding the vacuum residue (VR) for upgrading. This study explores the direct upgrading of AR and gauges the potential for eliminating the vacuum distillation unit, while recycling the upgraded oil to the atmospheric distillation column.
Thomas Kaminski, Maen M. Husein
openaire   +1 more source

Properties of nucleon in nuclear matter: once more [PDF]

open access: yes, 2014
We calculate the mass and residue of the nucleon in nuclear matter in the framework of QCD sum rules using the nucleon's interpolating current with an arbitrary mixing parameter.
Azizi, K., Er, N.
core   +2 more sources

Hydrocracking of C5-Isolated Asphaltene and Its Fractions in Batch and Semi-Batch Reactors

open access: yesEnergies, 2020
Non-catalytic and catalytic hydrocracking of C5-isolated asphaltene and its subfractions were performed in batch and semi-batch reactors at various temperatures. Catalyst and H2 played an important role in the hydrocracking of asphaltenes.
Ngoc Thuy Nguyen   +7 more
doaj   +1 more source

Study of Bulk Properties Relation to SARA Composition Data of Various Vacuum Residues Employing Intercriteria Analysis

open access: yesEnergies, 2022
Twenty-two straight run vacuum residues extracted from extra light, light, medium, heavy, and extra heavy crude oils and nine different hydrocracked vacuum residues were characterized for their bulk properties and SARA composition using four and eight ...
Dicho Stratiev   +7 more
doaj   +1 more source

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