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High Temperature

, Volume 56, Issue 6, pp 859–866 | Cite as

Modeling of Multiphase Thermodynamic Equilibria of NaCl–H2O Binary Mixture in a Wide Range of Pressures and Temperatures

  • A. A. AfanasyevEmail author
THERMOPHYSICAL PROPERTIES OF MATERIALS
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Abstract

A method is proposed for the determination of the multiphase thermodynamic equilibria of a binary NaCl–H2O mixture over a wide range of pressures and temperatures, including the critical thermodynamic conditions and the NaCl melting point. The method is based on calculation of the thermodynamic potential of the mixture which is entropy as a function of pressure, enthalpy, and NaCl concentration. The potential is calculated from two mutually consistent equations of state. The first equation of state of the van der Waals type describes the parameters of the vapor and liquid phases and the supercritical fluid. The second, simpler, equation describes the parameters of the solid phase of the salt. The chemical potentials of the equations are consistent for the calculation of single-phase, two-phase, and three-phase equilibria of the vapor–liquid–solid phase type. The phase diagrams of the mixture in the pressure–enthalpy–composition and pressure–temperature–composition variables are constructed.

Notes

ACKNOWLEDGMENTS

This study was supported by the Russian Science Foundation, project no. 16-17-10 199.

REFERENCES

  1. 1.
    Barbin, N.M., Tikina, I.V., Terent’ev, D.I., Alekseeva, S.G., and Porkhacheva, M.Yu., High Temp., 2017, vol. 55, no. 4, p. 506.CrossRefGoogle Scholar
  2. 2.
    Nigmatulin, R.I. and Bolotnova, R.Kh., High Temp., 2017, vol. 55, no. 2, p. 199.CrossRefGoogle Scholar
  3. 3.
    Blundy, J., Mavrogenes, J., Tattitch, B., Sparks, S., and Gilmer, A., Nat. Geosci., 2015, vol. 8, p. 235.ADSCrossRefGoogle Scholar
  4. 4.
    Afanasyev, A.A. and Melnik, O.E., Fluid Dyn., 2017, vol. 52, no. 3, p. 416.MathSciNetCrossRefGoogle Scholar
  5. 5.
    Afanas’ev, A.A. and Mel’nik, O.E., Moscow Univ. Mech. Bull. (Engl. Transl.), 2013, vol. 68, no. 3, p. 76.Google Scholar
  6. 6.
    Afanasyev, A.A., High Temp., 2012, vol. 50, no. 3, p. 340.CrossRefGoogle Scholar
  7. 7.
    Driesner, T. and Heinrich, C.A., Geochim. Cosmochim. Acta, 2007, vol. 71, p. 4880.ADSCrossRefGoogle Scholar
  8. 8.
    Driesner, T., Geochim. Cosmochim. Acta, 2007, vol. 71, p. 4902.ADSCrossRefGoogle Scholar
  9. 9.
    Brusilovskii, A.I., Fazovye prevrashcheniya pri razrabotke mestorozhdenii nefti i gaza (Phase Transformations in the Development of Oil and Gas Fields), Moscow: Graal’, 2002.Google Scholar
  10. 10.
    Landau, L.D. and Lifshits, E.M., Teoreticheskaya fizika (Theoretical Physics), vol. 4: Statisticheskaya fizika (Statistical Physics), Moscow: Gostekhizdat, 1951.zbMATHGoogle Scholar
  11. 11.
    Afanasyev, A.A., Int. J. Greenhouse Gas Control, 2013, vol. 19, p. 731.CrossRefGoogle Scholar
  12. 12.
    Passut, C.A. and Danner, R.P., Ind. Eng. Chem. Process Des. Dev., 1972, vol. 11, p. 543.CrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  1. 1.Institute of Mechanics, Moscow State UniversityMoscowRussia

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