Non-thermal plasma enhanced heavy oil upgrading

Hao, Haigang; Wu, Bao S.; Yang, Jianli; Guo, Qiang; Yang, Yong; Li, Yong W.

doi:10.1016/j.fuel.2014.08.043

Cited by 40 publications

(43 citation statements)

References 23 publications

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“…Plasma technology is a novel technique with the ability of producing an active medium for different applications such as NO oxidation [14], methane conversion [15], volatile organic compound (VOC) abatement [16], heavy oil upgrading [17], hydrogen production [18], regeneration of diesel particulate filter [19], catalyst assemble in a solution plasma process [20,21] and also catalyst regeneration at low temperatures and pressures [22,23]. In line with these applications, plasma technique can also be applied in catalyst regeneration at low temperature and pressure avoiding any internal destruction [24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Improving Plasma Regeneration Conditions of Pt–Sn/Al2O3 in Naphtha Catalytic Reforming Process Using Atmospheric DBD Plasma System

Hafezkhiabani

Fathi

Shokri

2015

Plasma Chem Plasma Process

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The catalytic naphtha reforming is one of the largest processes of petroleum industry that is used to rebuild the low-octane hydrocarbons in the naphtha to more valuable high-octane gasoline called reformate without changing the boiling point range. An atmospheric pressure pin to plate dielectric barrier discharge (DBD) plasma was used to remove carbonaceous contaminant from the coked Pt-Sn/Al 2 O 3 catalysts during the naphtha reforming process. The effects of treatment time and flow ratios of O 2 /Ar and O 2 / He on the carbon content of the coked catalysts were investigated. The produced radicals and active species of the plasma process were identified by optical emission spectroscopy. To confirm removing the coke from the catalyst, thermal gravimetric/differential thermal analysis and temperature programmed oxidation analysis were done. Effects of treatment time and flow ratios of O 2 /Ar and O 2 /He on the carbon content of the coked catalysts were investigated by applying elemental analysis. The results of X-ray diffraction, X-ray fluorescence, Brunauer-Emmett-Teller, and CO adsorption showed that the structure and specifications of regenerated catalysts remained without significant changes during the plasma treating. The catalyst performance test revealed that DBD plasma regenerated catalysts increased the aromatic content of the feed as well as the fresh catalysts. The results showed that the plasma treatment method for regeneration of Pt-Sn/Al 2 O 3 can be applied at lower temperature and pressure relative to the thermal regeneration method.

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Section: Introductionmentioning

confidence: 99%

Improving Plasma Regeneration Conditions of Pt–Sn/Al2O3 in Naphtha Catalytic Reforming Process Using Atmospheric DBD Plasma System

Hafezkhiabani

Fathi

Shokri

2015

Plasma Chem Plasma Process

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“…T e decreases with increasing n e ; with the three tubes of 40 mm diameter geometry having the lowest temperature range of 5.1-5.4 eV. This can be attributed to Coulomb collisions between charged particles which becomes more significant as n e increases [1].…”

Section: Resultsmentioning

confidence: 92%

“…The EVDFs were calculated for an E/N range of 50-1000 Td at 50 Td intervals. Each of the obtained EVDF distributions was used to calculate equation (1). The calculated theoretical ratios of …”

Section: B Modeling Of Electron Density N E and Electron Temperaturmentioning

confidence: 99%

“…Non-thermal plasma (NTP) can be produced from dielectric barrier discharge (DBD) reactors, and can consist of either a single insulated electrode, two insulated electrodes or an insertion of a dielectric barrier in the space between both electrodes [1]. In atmospheric air, DBDs are able, via ionization, to produce chemically active species such as oxygen and hydroxyl radicals.…”

Section: Introductionmentioning

confidence: 99%

“…In atmospheric air, DBDs are able, via ionization, to produce chemically active species such as oxygen and hydroxyl radicals. These reactive species are useful in various applications, such as surface modification [2], [3], flue gas [4] and waste water treatment [5], assisting in combustion [6], [7] and for fuel synthesis [1]. The production of these reactive species is affected by the properties of the plasma, such as the electron density, n e which is the number of electrons per unit volume produced by the discharge, and the electron temperature, T e which gives the average energy of the electrons produced by the discharge.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characterization of an Atmospheric Air Non-thermal Plasma Device in Relation to Ozone Production

Lim¹,

Jayapalan²,

Zulkifli³

et al. 2017

IJESD

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Abstract-An atmospheric air non-thermal plasma (NTP) device is characterized in relation to ozone production. The electron density, n e , electron temperature, T e and ozone concentration are measured for three dielectric barrier discharge (DBD) geometries, i.e., ten tubes of 10 mm outer diameter (OD), six tubes of 25 mm OD, and three tubes of 40 mm OD.n e and T e are deduced using optical emission spectroscopy via the line ratio method and the ozone concentrations are measured by using an ozone meter.n e and ozone concentrations were the highest for the three tube-40 mm configuration, showing a correlation between the number of charged particles and ozone production.

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Improvement of oxidation stability of fatty acid methyl esters derived from soybean oil via partial hydrogenation using dielectric barrier discharge plasma

et al. 2020

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Summary Oxidation stability is an important biodiesel property. One of the methods to improve oxidation stability is partially hydrogenated fatty acid methyl esters (H‐FAME). The present research studied the novel production technique of H‐FAME derived from soybean FAME using non‐thermal parallel‐plate dielectric barrier discharge (DBD) plasma. This green hydrogenation method does not require a catalyst and can be performed under atmospheric pressure and at room temperature. The reaction using DBD plasma could effectively initiate the hydrogenation reaction, and the results showed similar performance to catalysis technique. The optimized process parameters for 35 mL of FAME were 25% H2, 5.5 hours of reaction time, and ambient temperature. This condition exhibited the highest conversion of polyunsaturated FAMEs (C18:2 and C18:3) and the highest yield of C18:1. DBD plasma hydrogenation resulted in the reduction of iodine value from 128 to 67.4. The oxidation stability was enhanced from 2.13 to 10 hours while the cloud point increased from −1°C to 11°C (still within the ASTM D6751 standard). This plasma process is a new alternative and eco‐friendly method for H‐FAME production.

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Non-thermal plasma enhanced heavy oil upgrading

Cited by 40 publications

References 23 publications

Improving Plasma Regeneration Conditions of Pt–Sn/Al2O3 in Naphtha Catalytic Reforming Process Using Atmospheric DBD Plasma System

Improving Plasma Regeneration Conditions of Pt–Sn/Al2O3 in Naphtha Catalytic Reforming Process Using Atmospheric DBD Plasma System

Characterization of an Atmospheric Air Non-thermal Plasma Device in Relation to Ozone Production

Improvement of oxidation stability of fatty acid methyl esters derived from soybean oil via partial hydrogenation using dielectric barrier discharge plasma

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