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Prospects of selective treatment of the middle fractions of sulfur petroleums. II

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Chemistry and Technology of Fuels and Oils Aims and scope

Conclusions

  1. 1.

    A method is proposed for assessing selective solvents and extraction schemes and conditions for the middle fractions from sulfur and high-sulfur petroleums, based on the refractive indices of the raffinates and extracts.

  2. 2.

    The authors have selected a solvent — dimethylformamide — and suitable conditions for its use for extractive dearomatization and desulfuration of the middle fractions, and for obtaining a concentrate of organosulfur compounds and aromatic hydrocarbons (mainly alkyl benzenes).

  3. 3.

    Numerical parameters have been found for phase equilibria in the systems middle fraction of Arlan petroleum-dimethylformamide (DMFA). A triangular equilibrium diagram has been constructed and empirical equations derived for the compositions of the equilibrium phases.

  4. 4.

    The conditions for regeneration of the solvent from mixtures of raffinates and extracts with DMFA have been selected. The necessary calculating-technical indices have been obtained.

  5. 5.

    Preliminary data have been obtained for designing a rotor-disc extractor for treating the middle fractions of sulfur and high-sulfur petroleums with dimethylformamide.

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Literature cited

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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 7, pp. 1–7, July, 1970.

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Éigenson, A.S., Sokov, Y.F., Putilova, Z.D. et al. Prospects of selective treatment of the middle fractions of sulfur petroleums. II. Chem Technol Fuels Oils 6, 481–487 (1970). https://doi.org/10.1007/BF00714007

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  • DOI: https://doi.org/10.1007/BF00714007

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