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Chemical Research in Chinese Universities

, Volume 34, Issue 5, pp 803–807 | Cite as

Solid-liquid Equilibria in the Ternary Systems (NaCl+SrCl2+H2O) and (KCl+SrCl2+H2O) at 288.15 K and 0.1 MPa

  • Dongchan Li
  • Rong Fan
  • Sennan Yang
  • Ziyi Zhang
Article
  • 7 Downloads

Abstract

Solid-liquid phase equilibria of the two ternary systems (NaCl+SrCl2+H2O) and (KCl+SrCl2+H2O) at T=288.15 K and p=0.1 MPa were studied using the isothermal dissolution equilibrium method. Solubilities of the equilibrium liquid phase were determined, and the solids were also investigated by the Schreinemaker method of wet residues. In the ternary system (NaCl+SrCl2+H2O) at 288.15 K, there is one invariant point corresponding to (NaCl+SrCl2·6H2O) and two crystallization regions corresponding to NaCl and SrCl2·6H2O. The crystallized area of SrCl2·6H2O decreased with the increasing temperature, while that of NaCl increased slightly. In the ternary system (KCl+SrCl2+H2O) at 288.15 K, there is one invariant point(KCl+SrCl2·6H2O) and two crystallization regions cor-responding to KCl and SrCl2·6H2O. Both systems belong to a simple eutectic type, and neither double salts nor solid solutions were formed. On the basis of Pitzer-Harvie-Weare model, the solubilities of the two systems at 288.15 K were demonstrated. A comparison showed that the calculated solubilities agreed well with the experimental data.

Keywords

Phase equilibrium Solubility Phase diagram Oilfield brine 

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Copyright information

© Jilin University, The Editorial Department of Chemical Research in Chinese Universities and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Dongchan Li
    • 1
    • 2
  • Rong Fan
    • 1
  • Sennan Yang
    • 1
  • Ziyi Zhang
    • 1
  1. 1.College of Chemical Engineering and TechnologyHebei University of TechnologyTianjinP. R. China
  2. 2.Engineering Research Center of Seawater Utilization Technology, Ministry of EducationHebei University of TechnologyTianjinP. R. China

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