Phase Equilibria of Ethane Hydrate in MgCl₂ Aqueous Solutions

Abstract

In this work, phase equilibrium data for ethane hydrate in the presence of MgCl2 aqueous solutions were reported at concentrations of (0.05, 0.3, 0.5, 0.8, and 1.2) mol·dm−3 MgCl2 in the temperature and pressure ranges of (276.2 to 286.0) K and (1.12 to 2.70) MPa, respectively. Measurements were made using the isochoric pressure-search method. The results showed that the addition of MgCl2 caused the phase equilibrium temperatures to be lowered. The difference of phase equilibrium temperatures between pure water and a solution at a given pressure increased with the increasing concentration of MgCl2.