Vapor-liquid equilibrium of dimethyl carbonate-diethyl carbonate-methanol ternary system

The atmospheric vapor-liquid equilibrium(VLE) data of dimethyl carbonate-diethyl carbonate,dimethyl carbonate-methanol,diethyl carbonate-methanol binary systems were measured by double circulating vapor-liquid equilibrium caldron.The experimental results checked by Herington method are in full consistence with thermodynamics.The Wilson mode was used to correlate the VLE data of these binary systems.With the binary parameters obtained,the vapor compositions were calculated and compared with the corresponding experimental data.The agreement between the calculated and experimental data is satisfactory.The ternary vapor-liquid equilibrium data for dimethyl carbonate-diethyl carbonate-methanol system were calculated by using binary VLE data by Wilson equation,and these data can be used for building the mathematical model of separating diethyl carbonate,dimethyl carbonate and methanol.