The Experts below are selected from a list of 276 Experts worldwide ranked by ideXlab platform
Mikael Berthod - One of the best experts on this subject based on the ideXlab platform.
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Optimization of Hydrocracker pilot plant operation for Base Oil production
Catalysis Today, 2016Co-Authors: Nilesh Chandak, Abraham George, Adel Al Hamadi, Mikael BerthodAbstract:This paper describes the Hydrocracker pilot plant operations to produce Un-Converted Oil (UCO) selective for Base Oil production while achieving the middle distillate quality. This test was carried out to optimize feed and product quality for the commercial Base Oil unit to produce high viscosity index (VI) lube oil. The main objective of this experiment was to assess the performance of the hydro-cracking (HC) catalyst at different conversion levels between 50 wt% and 70 wt% and evaluate the quality of the Base Oil (BO) that would be produced in the commercial unit. For the test, fixed bed reactor was packed with commercial HC catalyst with pre-treatment hydro-treating (HT) catalyst upstream. The process parameters and product yields were studied by varying the HC reactor temperature. Then, Hydrocracker products i.e. total liquid product (TLP) were collected and distilled into distillates and UCO. Special emphasis was given to the UCO quality with respect to the conversion so that it can produce desired Base Oil grades of Group-II (Gr II) and Group-III (Gr III). The experimental results have shown that it is possible to produce the Base Oil on specifications even at lower conversion up to 50 wt%. Details of Hydrocracker pilot plant design, catalyst, operations and study results are discussed.
Dicho Stratiev - One of the best experts on this subject based on the ideXlab platform.
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Laboratory and commercial investigation of ebullated bed residue hydrocracking performance during processing of Urals crude vacuum resid and its blends with vacuum gas oil and atmospheric residue
International Journal of Oil Gas and Coal Technology, 2019Co-Authors: Dicho Stratiev, Ivelina Shishkova, Ekaterina Nikolaychuk, Magdalena Mitkova, Dobromir Yordanov, Rosen D. Dinkov, Radoslava Nikolova, Ivailo Tankov, Wessel Ijlstra, David McnamaraAbstract:This study focuses on investigating the conversion behaviour of vacuum residue and blends with heavy VGO (480-540°C) and atmospheric residue (340°C+), three fractions originating from the same Russian export blend crude oil (REBCO), in a laboratory ebullated bed hydrocracking pilot plant unit and in the LUKOIL Neftohim Burgas commercial H-OilRC Hydrocracker. It was found that the vacuum residue conversion was 1.7 times as high as that of the VGO at the same operating conditions in both laboratory and in the commercial H-OilRC hydrocracking unit. No increase in the sediment content of the atmospheric residue product, obtained during hydrocracking of the lighter feeds, was observed. It was found that the vacuum residue H-Oil hydrocracking is best described by 1.5 order kinetics. This study showed that co-processing of distillate material (mainly vacuum gas oil) is an option to increase capacity of an existing H-OilRC residue Hydrocracker while also improving the VGO product quality without adversely impacting sediment levels in the unconverted residue product. [Received: February 2, 2017; Accepted: September 21, 2017]
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Effect of catalyst condition on sedimentation and conversion in the ebullated bed vacuum residue H-Oil hydrocracking
Petroleum Science and Technology, 2019Co-Authors: Dicho Stratiev, Ivelina Shishkova, Ekaterina Nikolaychuk, Miroslav Anastasov, Kiril Stanulov, Vesislava TotevaAbstract:AbstractThis study highlights the importance of the condition of the catalytic system in the ebullated bed vacuum residue Hydrocracker on the performance of the unit, proving that not only feedstoc...
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what is behind the high values of hot filtration test of the ebullated bed residue h oil Hydrocracker residual oils
Energy & Fuels, 2016Co-Authors: Dicho Stratiev, Ivelina Shishkova, Kiril Stanulov, Rosen Dinkov, Ilshat Sharafutdinov, Natalia Ivanova, Magdalena Mitkova, Dobromir Yordanov, Nikolay Rudnev, Alexander ArtemievAbstract:This work summarizes the results of multiple experiments performed in the LUKOIL Neftohim Burgas Research Laboratory related to the issue of high values of hot filtration test (HFT) of the residue H-Oil hydrocracking residual oil products. After the start-up of the new residue H-Oil Hydrocracker in the LUKOIL Neftohim Burgas refinery during the second half of 2015 the values of the HFT of the vacuum tower bottom product varied between 0.01 and 8.7%. It was found that the vacuum residual oil feed source has a profound effect on the processes of sedimentation in the H-Oil Hydrocracker. The processing of vacuum residual oils from Arab medium, Arab heavy, and Basrah light crudes reduced the sedimentation and allowed achievement of a higher conversion. The H/C ratios of asphaltenes from all studied feeds decreased after hydrocracking. However, the decrease of the H/C ratio was the least pronounced with the Basra light asphaltenes, while the H/C ratios of asphaltenes from the vacuum residual oils originating fr...
Woody Shiflett - One of the best experts on this subject based on the ideXlab platform.
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Hydrocracker pretreat catalyst development
Chinese Journal of Catalysis, 2009Co-Authors: Y U Bruce, Theo L M Maesen, Cecelia Radlowski, Art Dahlberg, John Creighton, Dave Krenzke, Dan Torchia, Woody ShiflettAbstract:This paper reviews the history of Chevron Technology Marketing's Hydrocracker pretreat catalyst development. The excellent hydrodenitrogenation (HDN) performance on recently developed catalysts is explained by the theory that more Type II active sites lead to better HDN/HDS (hydrodesulfurization) performance.
Nilesh Chandak - One of the best experts on this subject based on the ideXlab platform.
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Optimization of Hydrocracker pilot plant operation for Base Oil production
Catalysis Today, 2016Co-Authors: Nilesh Chandak, Abraham George, Adel Al Hamadi, Mikael BerthodAbstract:This paper describes the Hydrocracker pilot plant operations to produce Un-Converted Oil (UCO) selective for Base Oil production while achieving the middle distillate quality. This test was carried out to optimize feed and product quality for the commercial Base Oil unit to produce high viscosity index (VI) lube oil. The main objective of this experiment was to assess the performance of the hydro-cracking (HC) catalyst at different conversion levels between 50 wt% and 70 wt% and evaluate the quality of the Base Oil (BO) that would be produced in the commercial unit. For the test, fixed bed reactor was packed with commercial HC catalyst with pre-treatment hydro-treating (HT) catalyst upstream. The process parameters and product yields were studied by varying the HC reactor temperature. Then, Hydrocracker products i.e. total liquid product (TLP) were collected and distilled into distillates and UCO. Special emphasis was given to the UCO quality with respect to the conversion so that it can produce desired Base Oil grades of Group-II (Gr II) and Group-III (Gr III). The experimental results have shown that it is possible to produce the Base Oil on specifications even at lower conversion up to 50 wt%. Details of Hydrocracker pilot plant design, catalyst, operations and study results are discussed.
Beckay J Mezza - One of the best experts on this subject based on the ideXlab platform.
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process for using iron oxide and alumina catalyst for slurry hydrocracking
2009Co-Authors: Alakananda Bhattacharyya, Beckay J MezzaAbstract:A process and apparatus is disclosed for converting heavy hydrocarbon feed into lighter hydrocarbon products. The heavy hydrocarbon feed is slurried with a catalyst comprising iron oxide and alumina to form a heavy hydrocarbon slurry and hydrocracked to produce lighter hydrocarbons. The iron oxide and alumina catalyst does not require as much iron content relative to non-gaseous material in the reactor to obtain useable products.
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process for using alumina catalyst in slurry hydrocracking
2008Co-Authors: Alakananda Bhattacharyya, Beckay J MezzaAbstract:A process and apparatus is disclosed for converting heavy hydrocarbon feed into lighter hydrocarbon products. The heavy hydrocarbon feed is slurried with a catalyst comprising iron oxide and alumina to form a heavy hydrocarbon slurry and hydrocracked to produce lighter hydrocarbons. The alumina in the catalyst is active in suppressing the production of mesophase.
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process for using iron oxide and alumina catalyst with large particle diameter for slurry hydrocracking
2008Co-Authors: Alakananda Bhattacharyya, Beckay J Mezza, Maureen L Bricker, Lorenz J BauerAbstract:A process and apparatus is disclosed for converting heavy hydrocarbon feed into lighter hydrocarbon products. The heavy hydrocarbon feed is slurried with a catalyst comprising iron oxide and alumina to form a heavy hydrocarbon slurry and hydrocracked to produce lighter hydrocarbons. Performance of the iron oxide and alumina catalyst at high mean particle diameters is comparable to performance at low mean particle diameters.
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process for using hydrated iron oxide and alumina catalyst for slurry hydrocracking
2008Co-Authors: Alakanandra Bhattacharyya, Beckay J Mezza, Maureen L Bricker, Lorenz J BauerAbstract:A process and apparatus is disclosed for converting heavy hydrocarbon feed into lighter hydrocarbon products. The heavy hydrocarbon feed is slurried with a catalyst comprising iron oxide and alumina to form a heavy hydrocarbon slurry and hydrocracked to produce lighter hydrocarbons. Performance of the iron oxide and alumina catalyst is not substantially affected by significant quantities of water on the catalyst.