Effect of the Solvent Composition on the Content of the Crystalline Phase and Melting Temperature of Paraffin Waxes

Иванова, И. К.; Каширцев, В. А.; Semenov, M. E.; Glyaznetsova, Yu. S.; Chalaya, O. N.; Зуева, И. Н.; Portnyagin, A. S.

doi:10.1134/s1070427220040163

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…Jennings and Weispfennig 69 investigated solubility measurements for a variety of wax and solvent combinations, probing the effects of alkane chain length, carbon number parity, solvent, and other factors (see Figure 5). Ivanova et al 70 found that the solubility of waxes increased with the decrease in molecular size of aliphatic solvents, and the waxes had the highest crystallinity index and the highest melting temperature in aliphatic solvents compared to other solvent components; cycloalkane solvents disrupt the conformational order of liquid long-chain hydrocarbons; the crystallinity index and melting temperature of waxes decreased when aromatics were present in the solvent, and the crystallization rate decreased, and the shorter the alkyl substituent in the aromatic ring, the lower the value.…”

Section: Crystallization Properties and Phase Behaviorsmentioning

confidence: 99%

Advances in and Perspectives on Strategies for Improving the Flowability of Waxy Oils

Yao

Sun

et al. 2022

Energy Fuels

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The research on the flowability of waxy oil has spanned more than a century and is still attracting much attention. How to improve the flowability of waxy oil to ensure safe and efficient pipeline transportation and storage is of great practical importance for the industry. In this work, we have systematically reviewed the research advances in improving the flowability of waxy oil. First, the crystallization properties and phase behavior of waxes are described based on their chemical structure, thermodynamic properties, and solution phase properties, with emphasis on the solventized layer properties of wax crystals. Then, the mechanisms, process, and research progress in flow improvement of waxy oil are discussed from three major aspects: process improvement, equipment improvement, and chemical treatment, with emphasis on the summary of waxy oil pour point depressants in recent years. The remaining challenges and perspectives for future research on flow improvement of waxy oil are presented.

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Section: Crystallization Properties and Phase Behaviorsmentioning

confidence: 99%

Advances in and Perspectives on Strategies for Improving the Flowability of Waxy Oils

Yao

Sun

et al. 2022

Energy Fuels

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“…Aliphatic, naphthenic, and aromatic hydrocarbons affect the content of the crystalline phase and the melting point of paraffins in composite solvents [10]. The degree of crystallinity of paraffins is known to depend on the degree of solvent aliphaticity, which decreases in the sequence aliphatic → aliphatic-aromatic → aliphatic-naphthenic-aromatic solvent, and their melting points increase in the series aliphatic-aromatic → aliphatic → aliphatic-naphthenic-aromatic solvent.…”

Section: Introductionmentioning

confidence: 99%

Selection of Solvents for the Removal of Asphaltene–Resin–Paraffin Deposits

Tanirbergenova¹,

Ongarbayev

Zhambolova³

et al. 2022

Processes

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In this study, we aimed to select the optimal solvents for the removal of asphaltene–resin–paraffin deposits. The effectiveness of various solvents was determined based on the asphaltene–resin–paraffin deposits (ARPDs) of the Zhanaozen (Ozen) crude oil field. These deposits affect the geological, physical, and technological conditions of the oil field, thus influencing its development. According to the results, we found that the most effective composite solvent is a composition comprising a 50% gasoline fraction and a 50% kerosene fraction. This composition showed mass loss of deposits of 97.7% and a dissolving power of 93.5 g/cm3 after 5 h. We confirmed the effectiveness of this composition by the paraffinic type of the deposits, which is explained by the high content of paraffin in the oil from the Zhanaozen field. Aromatic solvents showed a relatively low dissolving power compared with aliphatic solvents, which also confirms the low content of resins and asphaltenes in the ARPD.

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Geochemistry of Oils in the Middle Devonian–Lower Frasnian Terrigenous Petroleum System of the Timan–Pechora Basin

et al. 2022

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Effect of the Solvent Composition on the Content of the Crystalline Phase and Melting Temperature of Paraffin Waxes

Cited by 3 publications

References 9 publications

Advances in and Perspectives on Strategies for Improving the Flowability of Waxy Oils

Advances in and Perspectives on Strategies for Improving the Flowability of Waxy Oils

Selection of Solvents for the Removal of Asphaltene–Resin–Paraffin Deposits

Geochemistry of Oils in the Middle Devonian–Lower Frasnian Terrigenous Petroleum System of the Timan–Pechora Basin

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