Thermodynamic properties prediction of vinyl acetate systems at high pressures

Abstract

Vinyl acetate (a polar compound) has become a key ingredient in many industrialand consumer products. However, very little is known about its thermodynamic properties. This article presents a simple modijication of Wu and Stiel's (1 985) method (original/) developed for predicting thermodynamic properties of polar compounds up to P, = 10) for extending its range of applicability to very high pressures of the order of P, = 80. The predictions show good agreement with the experimental data for specific volume in the case of vinyl acetate, and specific volume, enthalpy and entropy for mixtures of ethylene and vinyl acetate for compositions up to 50 wt. % of vinyl acetate. Further validation for other polar systems would determine if this method is applicable to polar compounds in general.

Dynamic Multi‐Phase, Multi‐Zone Modeling of Flash Separators for Highly Viscous Polymerization Processes

“…As can be seen, the theoretical predictions are in good agreement with the available experimental density data. The interaction parameters for the ethylene–VA mixture were calculated using the experimental data of Prasad and Woollatt . Figure shows a comparison of model predictions and measured density values of VA–ethylene mixture for various VA concentrations (10–50 wt%), pressures (200–3 100 bar) and temperatures (27–150 °C).…”