Oxidation behavior and kinetics of Iranian crude oil samples using thermal analysis (TA)

Haghighi, Amin Nemati Zadeh; Dabiri, Abdolreza; Azdarpour, Amin; Karaei, Mohammad Afkhami

doi:10.1080/15567036.2019.1698676

Cited by 7 publications

(4 citation statements)

References 18 publications

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“…However, the extraction of heavy oil poses a great challenge due to its high viscosity and low API gravity. These properties derive from the lower hydrogen-to-carbon ratio and the high percentage of asphaltene compounds, sulfur and heavy metals [3][4][5]. Asphaltenes are high-molecular weight compounds with a cyclic structure and paraffin chains that are connected to O, N and S atoms [6,7].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal In-Reservoir Upgrading of Heavy Oil in the Presence of Non-Ionic Surfactants

et al. 2022

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The most widely applied methods to unlock heavy oil and natural bitumen resources in the world are still based on steam injection techniques. Improving the efficiency of hydrothermal processes poses a great challenge. The co-injection of various additives is practiced to lower the steam-to-oil ratio (SOR), viscosity alteration and to improve heavy oil properties. Organic solvents, non-condensable gases, air and surfactants are the preferred chemicals to be combined with steam. This study provides an investigation of the surfactant-assisted hydrothermal upgrading of heavy oil at 200 °C. The thermal stability and salt resistivity of two non-ionic surfactants (SA–3 and Biolub Green) were investigated. Moreover, the improved performance of the surfactants was established by performing an SARA analysis, elemental analysis, FT-IR spectroscopy, and EPR analysis, and by studying the viscosity reduction degree. The experimental results showed that surfactants lead to the in-depth destructive hydrogenation of the high-molecular components of heavy oil such as resins and asphaltenes. However, the content of light fractions increased. According to the results of the elemental analysis, the surfactants assist in the hydrodesulphurization of heavy oil. Overall, the physical and chemical consequences of hydrothermal upgrading in the presence of surfactants led to the irreversible viscosity reduction of heavy oil.

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Section: Introductionmentioning

confidence: 99%

Hydrothermal In-Reservoir Upgrading of Heavy Oil in the Presence of Non-Ionic Surfactants

et al. 2022

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“…For the past ten years, there has been a rapid rise in the use of conventional sources for generating more energy in order to satisfy the market demand [1]. However, these sources are likely to witness a considerable decrease due to the political, social and economic situation facing the modern world and community.…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric Study on Peat Catalytic Pyrolysis for Potential Hydrocarbon Generation

et al. 2022

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Peat has attracted considerable interest as a potential source of alternative fuel in terms of improving hydrocarbons production and satisfying market demand. The next decade is likely to witness a raise in its exploitation. Nevertheless, the characteristics of peat pyrolysis process, via which many experts expect a considerable generation of hydrocarbons, have not been dealt with in depth. In the present study we have applied thermal analysis combined with isoconversional and model methods for clarifying the kinetic and thermodynamic aspects of the process of generating hydrocarbons from peat via pyrolysis in the absence and presence of iron tallates as a catalytic agent. The obtained results showed a positive effect of the opted catalyst on the process of peat pyrolysis. It has been shown that the catalyst is able to reduce the energy of activation of peat pyrolysis process. Moreover, the Gibbs energy, enthalpy and entropy of complex formation values have been found lower in the presence of iron tallates for all the applied isoconversional methods (Friedman and KAS). The evidence from the present study points toward the beneficial effect generated from the utilization of iron tallates in the processes of hydrocarbons generation from peat for improving energy production in the future.

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“…Nowadays, increasing demand in the modern world for energy resources and the depletion of conventional oil reserves are widely seen to be the primary cause for moving toward finding new energy sources and developing new technologies for enhancing unconventional oil recovery. 1 It is common knowledge that a major part of the global oil reserves consists mainly of heavy oil and bitumen (60−70%), which, therefore, may meet the future needs of the world in terms of energy. However, the main limitation of this type of oils is their high viscosity and density, which challenge and complicate their exploitation and production.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The 3 Hz, 6H), 2.07 (q, J = 6.1 Hz, 0H), 1.98 (p, J = 6.8 Hz, 4H), 1.51 (q, J = 6.8 Hz, 6H), 1.24 (d, J = 7.9 Hz, 31H), 0.84 (t, J = 6.5 Hz, 5H). 1 H NMR (400 MHz, DMSO-d 6 ) spectrum of COL2: δ 5.42 (q, J = 7.8 Hz, 2H), 5.36−5.24 (m, 3H), 5.19 (t, J = 5.1 Hz, 1H), 4.76 (q, J = 6.1 Hz, 2H), 4.26 (dd, J = 12.2, 3.6 Hz, 2H), 4.11 (dd, J = 11.9, 6.4 Hz, 2H), 4.03 (d, J = 7.1 Hz, 0H), 2.95 (s, 0H), 2.80 (s, 0H), 2.45 (s, 11H), 2.25 (dt, J = 14.1, 7.1 Hz, 12H), 1.98 (q, J = 6.3, 5.4 Hz, 7H), 1.49 (dt, J = 13.0, 6.7 Hz, 13H), 1.34−0.89 (m, 78H), 0.83 (d, J = 7.0 Hz, 24H).…”

Section: ■ Introductionmentioning

confidence: 99%

Effect of Ligand Structure on the Kinetics of Heavy Oil Oxidation: Toward Biobased Oil-Soluble Catalytic Systems for Enhanced Oil Recovery

Farhadian

Khelkhal

Tajik

et al. 2021

Ind. Eng. Chem. Res.

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In recent years, protection of the environment from activities associated with enhanced oil recovery has been considered a crucial priority for decision-makers in the international community. The in situ combustion process as a promising thermal enhanced oil recovery method has been attracting considerable interest in terms of improving oil production and environmental protection. However, this technique is not yet well studied. This paper outlines a new approach to improve the process of heavy oil oxidation by designing new biobased oil-soluble catalysts that are able to maintain and stabilize the combustion flame front of the in situ combustion process. A comprehensive theoretical and experimental study including thermal analysis (thermogravimetry/differential scanning calorimetry, TG/DSC) and quantum calculations was used to shed light on the effect of the ligand structure in the oil-soluble catalytic system on the heavy oil oxidation process. The obtained accurate results proved that metal interaction with the designed ligands increased, which led to a decrease in the energy of activation and an increase in the heavy oil oxidation reaction rate. Besides, the obtained DSC curves showed one peak in the presence of Cu and biobased ligands, contrary to the curves obtained for heavy oil oxidation reported with other ligands and metals. In other words, the obtained catalysts merged low-temperature-and high-temperature oxidation regions into one region. These findings reveal that the structure of ligands can significantly affect their interaction with metals in oil-soluble catalysts, and therefore the efficiency of catalysts is dramatically improved. We believe that our work could be usefully employed for further studies to clarify the mechanism of the in situ combustion behavior of heavy oil for a better impact on the environment.

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Oxidation behavior and kinetics of Iranian crude oil samples using thermal analysis (TA)

Cited by 7 publications

References 18 publications

Hydrothermal In-Reservoir Upgrading of Heavy Oil in the Presence of Non-Ionic Surfactants

Hydrothermal In-Reservoir Upgrading of Heavy Oil in the Presence of Non-Ionic Surfactants

Thermogravimetric Study on Peat Catalytic Pyrolysis for Potential Hydrocarbon Generation

Effect of Ligand Structure on the Kinetics of Heavy Oil Oxidation: Toward Biobased Oil-Soluble Catalytic Systems for Enhanced Oil Recovery

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