Vapor-liquid equilibrium of binary CO2-organic solvent systems(ethanol,tetrahydrofuran,ortho-xylene,meta-xylene,para-xylene)

摘要

High pressure vapor-liquid phase equilibrium data(P-T-x-y)for the binary mixtures of organic solvent(ethanol,tetrahydrofuran,o-xylene,m-xylene,p-xylene)with CO2 have been measured at temperatures 313.2,333.2,353.2 K and pressures from 1 to 14 MPa using a static-analytic method.For the systems ethanol-CO2 and tetrahydrofuran-CO2,the experimental data at 313.2 and 333.2 K are in a good agreement with literature data.The experimental results have been correlated by the Peng-Robinson equation of state in combination with van der Waals one fluid mixing rule with two adjustable parameters.