Detailed Characterization of Diesel Fractions from Co-Hydroprocessing Vegetable Oil and Petroleum Heavy Vacuum Gas Oil Blends

Gieleciak, Rafał; Farooqi, Hena; Chen, Jinwen

doi:10.1021/acs.energyfuels.1c02547

Cited by 8 publications

(4 citation statements)

References 81 publications

(145 reference statements)

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“…The GC × GC instrument was configured with reversed polarity column combination, meaning that the separation of compounds was achieved on a semipolar (VF-17 ms) × nonpolar (Rtx-5) column set. The reversed column combination has been shown to be advantageous for extending the separation space for the characterization of the aromatics and cycloparaffins in petroleum streams . The labels on the chromatogram are used to identify the four major hydrocarbon types, together with their mass concentrations.…”

Section: Results and Discussionmentioning

confidence: 99%

Hydrotreatment of Olefins in Thermally Processed Bitumen under Mild Conditions

et al. 2019

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The stabilization of olefins in a thermally processed bitumen is a focal area for the development of bitumen partial upgrading technologies. Although a number of approaches have been proposed, including alkylation, oligomerization, and adsorption, hydrotreatment is still the most effective strategy for treating olefins in thermally cracked products such as coker naphtha. In our previous work, we studied the hydrogenation of model olefin compounds to understand their reactivity under mild conditions. This paper is a follow-up study focusing on the hydrotreatment of olefins in a thermally processed bitumen using a bench-scale continuous hydroprocessing unit. Two different scenarios were investigated: (1) hydrotreating the olefin-rich light fraction (IBP-280 °C) of the thermally processed bitumen product and (2) hydrotreating the whole product. The cracked feedstock was prepared by processing oil sand bitumen under visbreaking conditions. It was found that on-specification product for olefin content (<1.0 wt % 1-decene equivalent) could be obtained by hydrotreating the light fraction at lower temperatures (∼275–300 °C) and with less hydrogen as compared to hydrotreating the whole bitumen product, for which temperatures close to 325 °C are required in addition to about double the hydrogen input. Hydrotreating the whole product, however, brings the benefit of markedly reducing the total acid number and increasing the American Petroleum Institute gravity, which can be helpful to achieve the product quality goals of partial upgrading. Product characterization by advanced techniques such as 1H NMR and two-dimensional gas chromatography has revealed interesting reactivity patterns of olefins, sulfur compounds, and aromatics during mild hydrotreatment.

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Section: Results and Discussionmentioning

confidence: 99%

Hydrotreatment of Olefins in Thermally Processed Bitumen under Mild Conditions

et al. 2019

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“…GC×GC uses a nonpolar column for the first dimension to separate the constituent compounds by boiling point and a polar column for the second dimension to separate by polarity, and is able to reveal the detailed chemical structures of the molecules included. Recently, GC×GC–TOFMS has been applied in the compositional analysis of vehicle diesel fuel, jet fuel, biodegraded oil, and crude oil. , The marine diesel fuel RMG180 diluted with n -hexane was tested on a Pegasus 4D GC×GC–TOFMS instrument in this study. Though the high asphaltene content is contained in the RMG180 marine diesel fuel sample, the choice of n -hexane as a solvent can greatly reduce the possibility of introducing asphaltene into the GC column.…”

Section: Methodsmentioning

confidence: 99%

Surrogate Formulation for Marine Diesel Considering Some Important Fuel Physical–Chemical Properties

Mao

et al. 2019

Energy Fuels

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The extremely complex composition of practical fuels highlights the significance of surrogate fuels for numerical simulation and experimental research in engine development. Heavy fuel oil plays an important role in ocean-going transportation but the surrogate fuels to mimic its chemical and physical properties are seldom proposed. In this study, a promising approach was utilized to formulate surrogate fuels for a widely used heavy marine diesel oil based on some important fuel physical–chemical properties. Some novel methods were applied to characterize a sample of RMG180 residual marine fuel, including GC×GC–TOFMS to characterize the composition and the simulated distillation method to characterize the volatility. Two surrogate fuels were designed for different targets: one heavy six-component surrogate was designed for premixed and spray-guided modes by emulating both real fuel’s physical and chemical properties, including the distillation curve, cetane number (CN), and liquid density at 20 °C, whereas another lighter four-component surrogate was designed only for a premixed combustion mode by simultaneously fitting the H/C ratio, CN, and liquid density at 20 °C. For validation, both surrogate fuels were produced on a lab scale and tested under the same conditions as that of the target fuel. The experimental results of the surrogates were compared with the target fuel and the values predicted by thermodynamic models based on the surrogate composition, which showed promising results.

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“…Liu et al [99] Palm fatty acid distillate (PFAD) with light gas oil (LGO) S agi et al [79] Vacuum gas (VGO) and hydrotreated pyrolysis liquid (PL) (pine wood) Wang et al [56] Heavy vacuum gas (HVGO) and canola oil [101] Straight-run gas oil (SRGO) and used cooking oil (UCO) Middle distillates between 90% and 98% Dagonikou et al [103] Abbreviations: Hp, hydrogen pressure; LHSV, liquid hourly space velocity; Rt, reaction time; T, temperature.…”

Section: Metal Catalystsmentioning

confidence: 99%

Hydrocracking of non‐edible vegetable oil and waste cooking oils for the production of light hydrocarbon fuels: A review

Ratshoshi,

Mukaya,

Nkazi

2024

Can J Chem Eng

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The high demand for biofuels by surfacing economies with environmental issues has resulted in a more in‐depth search for new biofuel feedstocks. Non‐edible oils have become the centre of investigation as biofuel feedstocks since they do not compete with food sources. This review evaluates hydrocracking as a biofuel production method and further elucidates different feedstocks, the effects of hydrocracking catalysts, and operating parameters to obtain optimum yields and selectivity of desired products. The bifunctional catalyst mechanism is also explained. The hydrocracking technique is found to be more advantageous than other biofuel production techniques such as transesterification and pyrolysis due to its ability to produce valuable products of better quality and with higher yields. Coke formation is one of the challenges faced by hydrocracking despite that it can be reduced by high hydrogen pressure; this will increase the cost of the entire process.

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Detailed Characterization of Diesel Fractions from Co-Hydroprocessing Vegetable Oil and Petroleum Heavy Vacuum Gas Oil Blends

Cited by 8 publications

References 81 publications

Hydrotreatment of Olefins in Thermally Processed Bitumen under Mild Conditions

Hydrotreatment of Olefins in Thermally Processed Bitumen under Mild Conditions

Surrogate Formulation for Marine Diesel Considering Some Important Fuel Physical–Chemical Properties

Hydrocracking of non‐edible vegetable oil and waste cooking oils for the production of light hydrocarbon fuels: A review

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