Results 21 to 30 of about 38,623 (261)

A single events microkinetic model for hydrocracking of vacuum gas oil [PDF]

Computers & Chemical Engineering, 2017
Abstract The single events microkinetic modelling approach is extended to include saturated and unsaturated cyclic molecules, in addition to paraffins. The model is successfully applied to hydrocracking (HCK) of an hydrotreated Vacuum Gas Oil (VGO) residue in a pilot plant, under industrial operating conditions, on a commercial bi-functional catalyst.
Per Julian Becker, Nadege Serrand, Benoit Celse, Denis Guillaume, Hugues Dulot   +4 more
openaire   +1 more source

Application of Vacuum Adsorption Equipment in Treatment of Oil-based Drilling Fluid

Shiyou jixie, 2022
In order to reduce the oil-based solid drilling waste generated in the process of treatment while drilling and save the subsequent treatment cost,a vacuum adsorption equipment composed of adsorption vacuum chamber,micro-vibration device and screen ...
Chen Jinrui, Feng Qundi, Zhou Jing, Tian Wenwei, Liu Xingzhen, Liu Yanliang   +5 more
doaj  

Studying Thermal Cracking Behavior of Vacuum Residue

Iraqi Journal of Chemical and Petroleum Engineering, 2020
In the oil industry, the processing of vacuum residue has an important economic and environmental benefit. This work aims to produce industrial petroleum coke with light fuel fractions (gasoline, kerosene , gas oil) as the main product and de asphalted ...
Saleem Mohammad Alrubaye, Mohammed Saadi Hameed, Abdulkareem Dahash Affat   +2 more
doaj   +1 more source

Studying of Catalyst Deactivation in a Commercial Hydrocracking Process (ISOMAX) [PDF]

Journal of Petroleum Science and Technology, 2010
Catalyst deactivation is usually indispensable, although the rate at which it occurs varies greatly. At first, this article discusses the causes of deactivation in a commercial hydrocracking unit called Isomax.
Mahdi Rashidzadeh, A. Ahmad, S. Sadighi
doaj   +1 more source

Extrusion‐Based Additive Manufacturing of Advanced Ceramics: Strengthening Mechanisms and Process Optimization Review

Advanced Engineering Materials, EarlyView.
This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari, Mohammad Hadi Sheikh‐Ansari, Avinash Borgaonkar, Mehran Dadkhah, Abdollah Saboori   +4 more
wiley   +1 more source

Molecular Transformation of Vacuum Gas Oil in Hydrodesulfurization.

Journal of The Japan Petroleum Institute, 1997
減圧軽油 (VGO) の市販脱硫触媒による水素化脱硫反応を, 高速液体クロマトグラフィー (HPLC)-電解電離質量分析 (FI/MS) 法を用いて, 化合物レベルで解析した。VGOおよびその脱硫減圧軽油 (DSVGO) をHPLCにより芳香環数に従って七つのフラクションに分割し, 極性成分を除く各フラクションをFI/MS測定して, その組成を明らかにした。VGOの多環芳香族チオフェン類の全濃度は21.6wt%以上と推定された。これは, 多環芳香族分の6割以上に相当する。DSVGOにはVGOに含まれない新たな芳香族化合物の分子量分布が認められ, これらはチオフェン類の脱硫による生成物と推測された。本反応条件下では, 主としてチオフェン類が芳香環数の少ない炭化水素に転化されるために ...
AOYAGI, Ko, KOBAYASHI, Manabu, TOKAWA, Seiji, MITANI, Hiroshi   +3 more
openaire   +2 more sources

Multilayer Self‐Limiting Electrospray Deposition via Stepped Voltage Bias

Advanced Engineering Materials, EarlyView.
Self‐limiting electrospray deposition (SLED) uses a high voltage to generate and deposit a charged payload on a target surface. The coating retains its charge, repelling newly arriving material. SLED thickness can be decreased by applying a secondary bias to the target.
Madhuri Deb, S. Rahman Pejman, Alexander Jakimowicz, Jonathan P. Singer   +3 more
wiley   +1 more source

Petroleum asphaltene stability in the blending process of vacuum gas oil and vacuum residue [PDF]

SCIENTIA SINICA Chimica, 2018
In the blending process of vacuum residue (VR) and vacuum gas oil (VGO), an unstable mixture can be formed, which has a negative impact on the operation of devices and results in poor product distribution. In order to avoid this phenomenon, the stability of blends that forms by different kinds of VR and VGO with different ratios was studied.
Cheng Li, Songbai Tian, Xiaowei Wang
openaire   +1 more source

A Novel Modified Petroresin Particle (MPRP) With Enhanced Oil–Water Selectivity for Cold Production in Heavy Oil Reservoirs

Advanced Functional Materials, EarlyView.
A novel oil–water selective conformance control agent, MPRP, is prepared via hydrophilic grafting and mechanical granulation. MPRP uniformly disperses in water, cohesively expands upon aging, and readily dissolves in the oil phase. During conformance control, it selectively aggregates in water channeling pathways to form effective plugs without ...
Guang Zhao, Dongfang Lv, Chang Liu, Changxu Wu, Yifei Liu, Caili Dai, Huazhou Li   +6 more
wiley   +1 more source

Different Nonlinear Regression Techniques and Sensitivity Analysis as Tools to Optimize Oil Viscosity Modeling

Resources, 2021
Four nonlinear regression techniques were explored to model gas oil viscosity on the base of Walther’s empirical equation. With the initial database of 41 primary and secondary vacuum gas oils, four models were developed with a comparable accuracy of ...
Dicho Stratiev, Svetoslav Nenov, Dimitar Nedanovski, Ivelina Shishkova, Rosen Dinkov, Danail D. Stratiev, Denis D. Stratiev, Sotir Sotirov, Evdokia Sotirova, Vassia Atanassova, Krassimir Atanassov, Dobromir Yordanov, Nora A. Angelova, Simeon Ribagin, Liliana Todorova-Yankova   +14 more
doaj   +1 more source