Heavy oil upgrading via hydrodynamic cavitation in the presence of an appropriate hydrogen donor

Askarian, Mohammad; Vatani, Ali; Edalat, M.

doi:10.1016/j.petrol.2017.01.037

Cited by 32 publications

(12 citation statements)

References 16 publications

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“…At the same time, the high-temperature plasma heats the graphite to promote the expansion and exfoliation of graphite sheets. On the other hand, high-density and high-energy plasma bombards the surface of graphite sheets and fuel, producing a huge impact force, which not only accelerates the refinement and exfoliation of graphite sheets, but also causes part of fuel to evaporate and gasify, which leads to fuel sputtering on graphite and causes cavitation effects [27,28]. Part of the sputtering fuel is embedded between the graphite sheets and accelerates the exfoliation of the graphite sheets.…”

Section: Preparation and Modification Mechanismsmentioning

confidence: 99%

“…During DBDP-assisted ball milling, the plasma will make some high molecular polymers more prone to broken bonds and polymerization [29]. At the same time, when the cavitation occurs, the local temperature and pressure increase sharply when the bubble bursts, which results in decomposition and broken bonds of fuel molecules, generating free radicals and promoting chemical reactions [27,30], as well as the production of a large number of organic functional groups (-OH, C=C, -CH 3 , -CH 2 , C-H). The highly active particles (ions, electrons, atoms, and molecules in an excited state; free radicals; etc.)…”

Section: Preparation and Modification Mechanismsmentioning

confidence: 99%

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Preparation and Tribological Properties of Graphene Lubricant Additives for Low-Sulfur Fuel by Dielectric Barrier Discharge Plasma-Assisted Ball Milling

Hou

Bhandari³

et al. 2021

Processes

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Poor lubrication performance of low-sulfur fuel leads to increased wear of diesel engine components. In order to improve the lubrication properties of low-sulfur fuel, we successfully prepared graphene lubricant additives by dielectric barrier discharge plasma-assisted ball milling. The tribological properties of graphene lubricant additives in two types of 0# diesel oils with different sulfur content were evaluated by high-frequency reciprocating rig (HFRR). The results indicated that the expanded graphite was exfoliated and refined into graphene sheets with nine layers by the synergistic effect of the heat explosive effect of the discharge plasma, the impact of mechanical milling function, and the cavitation effect of 0# diesel oil. The organic functional groups of 0# diesel oil were successfully grafted on the surface of graphene sheets. The addition of 0.03 wt % graphene resulted in 20% reduction in the friction coefficient (COF) and 28% reduction in wear scar diameter (WSD) compared to pure 0# diesel oil with a sulfur content of 310 mg/kg. The addition of 0.03 wt % graphene resulted in 24% reduction in the friction coefficient (COF) and 30% reduction in wear scar diameter (WSD) compared to pure 0# diesel oil with a sulfur content of 1.1 mg/kg. The formation of graphene tribofilm on rubbing surfaces improved the lubrication properties of low-sulfur fuel.

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Section: Preparation and Modification Mechanismsmentioning

confidence: 99%

Section: Preparation and Modification Mechanismsmentioning

confidence: 99%

Preparation and Tribological Properties of Graphene Lubricant Additives for Low-Sulfur Fuel by Dielectric Barrier Discharge Plasma-Assisted Ball Milling

Hou

Bhandari³

et al. 2021

Processes

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show abstract

“…The study presented in the paper [26] is more interesting. It analyzed the treatment of "heavy" grades of oil using hydrodynamic cavitation.…”

Section: Desulfurization Of Crude Oilmentioning

confidence: 94%

Cavitation as a method of improving the energy efficiency of oil industry enterprises

Kuimov

Minkin

2021

E3S Web Conf.

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“…Cavitation is termed as the creation of microbubbles, successive expansion and contraction, and then collapse in a liquid [33,34]. HC phenomena are usually generated in a fluidic region in which the pressure drops under the vapour pressure when a liquid stream or liquid/solid mixture passes through a fluidic control device.…”

Section: Hc Reactors: Technical Aspectsmentioning

confidence: 99%

“…The intense implosions facilitate some cavitation sub-effects, including turbulence, shock waves, microjets, free-radical generation, etc. [34,35].…”

Section: Hc Reactors: Technical Aspectsmentioning

confidence: 99%

Plant and Biomass Extraction and Valorisation under Hydrodynamic Cavitation

Ferreira

Crudo³

et al. 2019

Processes

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Hydrodynamic cavitation (HC) is a green technology that has been successfully used to intensify a number of process. The cavitation phenomenon is responsible for many effects, including improvements in mass transfer rates and effective cell-wall rupture, leading to matrix disintegration. HC is a promising strategy for extraction processes and provides the fast and efficient recovery of valuable compounds from plants and biomass with high quality. It is a simple method with high energy efficiency that shows great potential for large-scale operations. This review presents a general discussion of the mechanisms of HC, its advantages, different reactor configurations, its applications in the extraction of bioactive compounds from plants, lipids from algal biomass and delignification of lignocellulosic biomass, and a case study in which the HC extraction of basil leftovers is compared with that of other extraction methods.

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Heavy oil upgrading via hydrodynamic cavitation in the presence of an appropriate hydrogen donor

Cited by 32 publications

References 16 publications

Preparation and Tribological Properties of Graphene Lubricant Additives for Low-Sulfur Fuel by Dielectric Barrier Discharge Plasma-Assisted Ball Milling

Preparation and Tribological Properties of Graphene Lubricant Additives for Low-Sulfur Fuel by Dielectric Barrier Discharge Plasma-Assisted Ball Milling

Cavitation as a method of improving the energy efficiency of oil industry enterprises

Plant and Biomass Extraction and Valorisation under Hydrodynamic Cavitation

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