Journal ArticleDOI
Hydrovisbreaking of vacuum residue from Russian Export Blend: influence of brown coal, light cycle oil, or naphtha addition
José Miguel Hidalgo-Herrador,Aleš Vráblík,Petr Jíša,Radek Černý,Jana Hamerníková +4 more
- Vol. 69, Iss: 8, pp 1075-1083
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TLDR
In this article, the thermal cracking of a vacuum residue (VR) from REB (Russian Export Blend) crude oil was carried out in an autoclave, where LCO (light cycle oil), naphtha, and brown coal (BC) were added with the aim of studying their effect on the final products composition, and dynamic viscosity, density, GC of gases, solubility in hexane and toluene, and simulated distillation were examined in raw materials, gaseous, and liquid products.Abstract:
Demand for high-value petroleum products is increasing and crude oils and their distillation products are becoming heavier. The thermal cracking of a vacuum residue (VR) from REB (Russian Export Blend) crude oil was carried out in an autoclave. LCO (light cycle oil), naphtha, and brown coal (BC) were added with the aim of studying their effect on the final products composition. The elemental analysis (%C, %N, %H, %S) was performed and dynamic viscosity, density, GC of gases (“Refinery Gas Analysis”), solubility in hexane and toluene, and simulated distillation were examined in raw materials, gaseous, and liquid products. As anticipated, due to its high aromatics content, the addition of LCO proved the best option, obtaining the highest yield of lighter liquids. The naphtha addition resulted in a slight increment of heavier products in the gaseous phase and higher yields to solids. The literature does not contain any extensive studies of the addition of BC to VR in the hydrovisbreaking process. The addition of BC resulted in an increment in the yield of the gaseous product and assumed the highest relative total consumption of hydrogen during the reaction.read more
Citations
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Journal ArticleDOI
Promoting asphaltene conversion by tetralin for hydrocracking of petroleum pitch
TL;DR: In this paper, the effects of tetralin as an H-donor on the reactivity of asphaltenes in a petroleum pitch were investigated under thermal cracking or catalytic hydrocracking conditions at 693 K and 10.0 K, respectively.
Journal ArticleDOI
Preparation and characterization of petroleum-based mesophase pitch by thermal condensation with in-process hydrogenation
TL;DR: In this paper, an in-process hydrogenation method was employed to achieve the hydrogenation reaction of intermediates generated during the thermal reaction using tetrahydronaphthalene (THN) as a hydrogen donor.
Journal ArticleDOI
Effect of blending on hydrotreating reactivities of atmospheric residues: Synergistic effects
Qingyan Cui,Qingyan Cui,Xiaoliang Ma,Koji Nakano,Koji Nakabayashi,Jin Miyawaki,Adel Al-Mutairi,Abdulazeem M.J. Marafi,Ahmed M. Al-Otaibi,Seong Ho Yoon,Isao Mochida +10 more
TL;DR: In this paper, the effect of blending heavy atmospheric residues (AR) and light AR on reactivities for Hydrodesulfurization (HDS), Hydrodenitrogenation (HDN), hydrodevanadium (HDV), hydrodenickel (HDNi), hydrodeasphaltenes (HDAsp) and hydrodeconradson-carbon-residue (HDCCR) in hydrotreating process, was conducted in a fixed-bed unit at 370°C under a H2 pressure of 13.5
Journal ArticleDOI
Effect of waste tires addition on a low-temperature hydrovisbreaking process of vacuum residue
TL;DR: In this paper, the effect of waste tire addition on a hydrovisbreaking process at low temperature was explored and the results showed that the addition of tires to the vacuum residue brought a positive effect to increasing the yield of lighter products in the final liquid product.
Journal ArticleDOI
Catalytic hydrocracking of vacuum residue and waste cooking oil mixtures
TL;DR: The effect of waste cooking oil addition to catalytic vacuum hydrocrack residue was studied in this paper, where commercial NiW/SiO2 and CoMo/Al2O3 catalysts were used at 390°C and 15MPa.
References
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A review of recent advances on process technologies for upgrading of heavy oils and residua
TL;DR: In this paper, different technologies for residua processing: thermal, catalytic fixed and ebullated types of hydroconversion are reviewed and discussed, and a possibility of combining the advantages of these technologies together with suitable catalyst with enhanced and controlled cracking activity is also analyzed.
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Upgrading Petroleum Residues and Heavy Oils
TL;DR: In this article, the authors present a theoretical analysis of upgrading and hydrotreating reactions in heavy oil and bitumen, as well as their physical properties, including residuals.
Journal ArticleDOI
Petroleum Residue Upgradation via Visbreaking: A Review
Jyeshtharaj B. Joshi,Aniruddha B. Pandit,Kamal L. Kataria,Rohit P. Kulkarni,Ashish N. Sawarkar,Deepak Tandon,Yad Ram,Man Mohan Kumar +7 more
TL;DR: A review of the literature pertaining to the visbreaking process has been extensively analyzed and a state-of-the-art review has been written that includes the following: (i) the effect of feed properties on fuel oil stability; (ii) reaction pathways, mechanism, and kinetics; (iii) parametric sensitivity of the operating variables such as temperature, pressure, and residence time; (iv) different visbreaker designs, viz. coil visbreaker, coil-soaker vis breaker, soaker with internals, and high conversion soaker; (v) c
Journal ArticleDOI
Hydrocracking of petroleum vacuum distillate containing rapeseed oil: Evaluation of diesel fuel
Pavel Šimáček,David Kubička +1 more
TL;DR: In this article, the same fraction containing 5.5% of rapeseed oil was co-processed at 400 and 420°C and under a hydrogen pressure of 18MPa over commercial Ni-Mo catalyst.
Journal ArticleDOI
Visbreaking: A technology of the past and the future
TL;DR: In this paper, the use of additives to encourage the preliminary deposition of coke-forming constituents is also an option. Depending upon the additive, disposal of the process sediment can be achieved by a choice of methods.
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