High-Pressure Vapor−Liquid Equilibrium for R-22 + Ethanol and R-22 + Ethanol + Water

Abstract

High-pressure vapor−liquid equilibrium (VLE) data for the systems CO2 + methanol at 313.05 K, CO2 + ethanol at 323.55, 325.15, and 333.35 K, R-22 (chlorodifluoromethane) + ethanol at 343.25, 361.45, and 382.45 K, and R-22 + ethanol + water at 351.55, 362.65, and 371.85 K are obtained using a circulation-type VLE apparatus. The apparatus is tested with measurements of the CO2 + methanol and CO2 + ethanol systems. The experimental data are correlated using the Peng−Robinson and Elliott−Suresh−Donohue equations of state.