Solid-liquid Equilibria in the Ternary Systems (NaCl+SrCl2+H2O) and (KCl+SrCl2+H2O) at 288.15 K and 0.1 MPa
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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.
KeywordsPhase equilibrium Solubility Phase diagram Oilfield brine
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- Li W., Dong Y. P., Song P. S., The Development and Utilization of Salt Lake Brine Resources, Chem. Ind. Press, Beijing, 2012 Google Scholar
- Fan Q. S., Ma H. Z., Tan H. B., Li T. W., J. Salt Lake Res., 2007 15, 6Google Scholar
- Fu J. L., Yu S. S., Li S. J., Ren H. Y., J. Salt Lake Res., 2005 13, 17Google Scholar
- Bi Y. J., Sun B., Zhao J., Song P. S., Li W., Chin. J. Inorg. Chem., 2011 27, 1765Google Scholar
- Analytical Department of Qinghai Institute of Salt-lake, Chinese Academy of Sciences, The Analytical Methods of Brines and Salts, Science Press, Beijing, 1988 Google Scholar
- Shi L. J., Sun B., Ding X. P., Song P. S., Chin. J. Inorg. Chem., 2010 26, 333Google Scholar
- Silcock H. L., Solubilities of Inorganic and Organic Compounds, Pergamon Press, Oxford, 1979 Google Scholar
- Ding X. P., Sun B., Shi L. J., Yang H. T., Song P. S., Chin. Inorg. Chem. Ind., 2010 42, 9Google Scholar
- Pitzer K. S., Activity Coefficients in Electrolyte Solution, CRC Press, Boca Raton, 1992 Google Scholar