Measurement and modeling of vapor-liquid equilibria at high salt concentrations

Isobaric vapor-liquid equilibrium data are reported for binary and ternary aqueous mixtures containing LiCl and ZnCl2 at total salt concentrations between 10 and 50 wt.%. The measurements were carried out at 5.3, 9.3, 20, 40, and 101.3 kPa in a computer-controlled glass apparatus. Particular care was taken to ensure proper equilibration of the high-density, high-viscosity salt mixtures. The equilibrium data spanning temperatures between 303 and 423 K were successfully correlated using the electrolyte model by Wang and Anderko [Fluid Phase Equilibr. 203 (2002) 141-176].