Commercial Ebullated Bed Vacuum Residue Hydrocracking Performance Improvement during Processing Difficult Feeds
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%. Intercriteria analysis was used to assess data from a commercial va...
| Main Authors: | , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-03-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/13/6/3755 |
| _version_ | 1797613650914050048 |
|---|---|
| author | Borislav Enchev Georgiev Dicho Stoyanov Stratiev Georgy Stoilov Argirov Angel Nedelchev Rosen Dinkov Ivelina Kostova Shishkova Mihail Ivanov Krassimir Atanassov Simeon Ribagin Georgi Nikolov Palichev Svetoslav Nenov Sotir Sotirov Evdokia Sotirova Dimitar Pilev Danail Dichev Stratiev |
| author_facet | Borislav Enchev Georgiev Dicho Stoyanov Stratiev Georgy Stoilov Argirov Angel Nedelchev Rosen Dinkov Ivelina Kostova Shishkova Mihail Ivanov Krassimir Atanassov Simeon Ribagin Georgi Nikolov Palichev Svetoslav Nenov Sotir Sotirov Evdokia Sotirova Dimitar Pilev Danail Dichev Stratiev |
| author_sort | Borislav Enchev Georgiev |
| collection | DOAJ |
| description | 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%. Intercriteria analysis was used to assess data from a commercial vacuum residue hydrocracker during processing blends from three vacuum residues: Urals, Siberian Light, and Basra Heavy. The analysis revealed that the main contributors to conversion enhancement is hydrodemetallization (HDM) and the first reactor ΔT augmentation. The increase of HDM from 40 to 98% and the first reactor ΔT (ΔT(R1)) from 49 to 91 °C were associated with a vacuum residue conversion enhancement of 62.0 to 82.7 wt.%. The developed nonlinear regression prediction of conversion from HDM and ΔT(R1) suggests a bigger influence of ΔT(R1) enhancement on conversion augmentation than the HDM increase. The intercriteria analysis evaluation revealed that the higher first reactor ΔT suppresses the sediment formation rate to a greater extent than the higher HDM. During processing Basrah Heavy vacuum residue, a reduction in hydrodeasphaltization (HDAs) from 73.6 to 55.2% and HDM from 88 to 81% was observed. It was confirmed that HDM and HDAs are interrelated. It was found that the attainment of conversion of 80 wt.% and higher during processing Urals and Siberian Light vacuum residues is possible when the HDM is about 90% and LHSV ≤ 0.19 h<sup>−1</sup>. |
| first_indexed | 2024-03-11T06:58:50Z |
| format | Article |
| id | doaj.art-a6d31886a5364d14aba26db69556293a |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T06:58:50Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-a6d31886a5364d14aba26db69556293a2023-11-17T09:26:22ZengMDPI AGApplied Sciences2076-34172023-03-01136375510.3390/app13063755Commercial Ebullated Bed Vacuum Residue Hydrocracking Performance Improvement during Processing Difficult FeedsBorislav Enchev Georgiev0Dicho Stoyanov Stratiev1Georgy Stoilov Argirov2Angel Nedelchev3Rosen Dinkov4Ivelina Kostova Shishkova5Mihail Ivanov6Krassimir Atanassov7Simeon Ribagin8Georgi Nikolov Palichev9Svetoslav Nenov10Sotir Sotirov11Evdokia Sotirova12Dimitar Pilev13Danail Dichev Stratiev14LUKOIL Neftohim Burgas, 8104 Burgas, BulgariaLUKOIL Neftohim Burgas, 8104 Burgas, BulgariaLUKOIL Neftohim Burgas, 8104 Burgas, BulgariaLUKOIL Neftohim Burgas, 8104 Burgas, BulgariaLUKOIL Neftohim Burgas, 8104 Burgas, BulgariaLUKOIL Neftohim Burgas, 8104 Burgas, BulgariaLUKOIL Neftohim Burgas, 8104 Burgas, BulgariaInstitute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Georgi Bonchev 105, 1113 Sofia, BulgariaInstitute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Georgi Bonchev 105, 1113 Sofia, BulgariaInstitute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Georgi Bonchev 105, 1113 Sofia, BulgariaDepartment of Mathematics, University of Chemical Technology and Metallurgy, Kliment Ohridski 8, 1756 Sofia, BulgariaIntelligent Systems Laboratory, University Prof. Dr. Assen Zlatarov, Professor Yakimov 1, 8010 Burgas, BulgariaIntelligent Systems Laboratory, University Prof. Dr. Assen Zlatarov, Professor Yakimov 1, 8010 Burgas, BulgariaDepartment of Mathematics, University of Chemical Technology and Metallurgy, Kliment Ohridski 8, 1756 Sofia, BulgariaInstitute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Georgi Bonchev 105, 1113 Sofia, BulgariaThe 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%. Intercriteria analysis was used to assess data from a commercial vacuum residue hydrocracker during processing blends from three vacuum residues: Urals, Siberian Light, and Basra Heavy. The analysis revealed that the main contributors to conversion enhancement is hydrodemetallization (HDM) and the first reactor ΔT augmentation. The increase of HDM from 40 to 98% and the first reactor ΔT (ΔT(R1)) from 49 to 91 °C were associated with a vacuum residue conversion enhancement of 62.0 to 82.7 wt.%. The developed nonlinear regression prediction of conversion from HDM and ΔT(R1) suggests a bigger influence of ΔT(R1) enhancement on conversion augmentation than the HDM increase. The intercriteria analysis evaluation revealed that the higher first reactor ΔT suppresses the sediment formation rate to a greater extent than the higher HDM. During processing Basrah Heavy vacuum residue, a reduction in hydrodeasphaltization (HDAs) from 73.6 to 55.2% and HDM from 88 to 81% was observed. It was confirmed that HDM and HDAs are interrelated. It was found that the attainment of conversion of 80 wt.% and higher during processing Urals and Siberian Light vacuum residues is possible when the HDM is about 90% and LHSV ≤ 0.19 h<sup>−1</sup>.https://www.mdpi.com/2076-3417/13/6/3755vacuum residuehydrocrackingebullated bedHDMHDAssediment control |
| spellingShingle | Borislav Enchev Georgiev Dicho Stoyanov Stratiev Georgy Stoilov Argirov Angel Nedelchev Rosen Dinkov Ivelina Kostova Shishkova Mihail Ivanov Krassimir Atanassov Simeon Ribagin Georgi Nikolov Palichev Svetoslav Nenov Sotir Sotirov Evdokia Sotirova Dimitar Pilev Danail Dichev Stratiev Commercial Ebullated Bed Vacuum Residue Hydrocracking Performance Improvement during Processing Difficult Feeds Applied Sciences vacuum residue hydrocracking ebullated bed HDM HDAs sediment control |
| title | Commercial Ebullated Bed Vacuum Residue Hydrocracking Performance Improvement during Processing Difficult Feeds |
| title_full | Commercial Ebullated Bed Vacuum Residue Hydrocracking Performance Improvement during Processing Difficult Feeds |
| title_fullStr | Commercial Ebullated Bed Vacuum Residue Hydrocracking Performance Improvement during Processing Difficult Feeds |
| title_full_unstemmed | Commercial Ebullated Bed Vacuum Residue Hydrocracking Performance Improvement during Processing Difficult Feeds |
| title_short | Commercial Ebullated Bed Vacuum Residue Hydrocracking Performance Improvement during Processing Difficult Feeds |
| title_sort | commercial ebullated bed vacuum residue hydrocracking performance improvement during processing difficult feeds |
| topic | vacuum residue hydrocracking ebullated bed HDM HDAs sediment control |
| url | https://www.mdpi.com/2076-3417/13/6/3755 |
| work_keys_str_mv | AT borislavenchevgeorgiev commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds AT dichostoyanovstratiev commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds AT georgystoilovargirov commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds AT angelnedelchev commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds AT rosendinkov commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds AT ivelinakostovashishkova commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds AT mihailivanov commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds AT krassimiratanassov commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds AT simeonribagin commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds AT georginikolovpalichev commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds AT svetoslavnenov commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds AT sotirsotirov commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds AT evdokiasotirova commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds AT dimitarpilev commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds AT danaildichevstratiev commercialebullatedbedvacuumresiduehydrocrackingperformanceimprovementduringprocessingdifficultfeeds |