ENHANCEMENT OF WATER VOLATILITY IN THE WATERTEG SOLUTION IN THE PRESENCE OF TOLUENE AND ISOOCTANE

In this work, vapor-liquid equilibria for systems water-triethylene glycol (TEG) and water- TEG-toluene-isooctane solutions were measured experimentally. The VLE data were determined in a modified Othmer still which is the continuous-distillation still that recirculates the vapor phase and the samples were analyzed using gas chromatography and titration method. NRTL and UNIQUAC models were correlated for liquid phase behavior. It was observed that the correlations can provide good agreement with experimental data. The results of multi-component VLE demonstrate the enhancement of volatility of water in water-TEG solutions and increasing the purity of the dehydrated TEG by the addition of toluene and isooctane.

کلیدواژه ها:

VLE ، Activity Coefficient ، NRTL ، UNIQUAC ، Natural Gas Dehydration