Multiphase Equilibria for Mixtures Containing Acetic Acid, Water, Propylene Glycol Monomethyl Ether, and Propylene Glycol Methyl Ether Acetate

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• 作者：Cheng-Ting Hsieh ; Ming-Jer Lee ; and Ho-mu Lin
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2006
• 出版时间：March 15, 2006
• 年：2006
• 卷：45
• 期：6
• 页码：2123 - 2130
• 全文大小：130K
• 年卷期：v.45,no.6(March 15, 2006)
• ISSN：1520-5045

文摘

A static-type apparatus equipped with a visual cell was utilized in the present study to measure isothermalvapor-liquid equilibrium (VLE) and vapor-liquid-liquid equilibrium (VLLE) data over a temperature rangeof 323.24 to 393.15 K. The VLE data were determined experimentally for binary mixtures of propyleneglycol monomethyl ether (PGME) + propylene glycol methyl ether acetate (PGMEA) and acetic acid +PGME. A minimum pressure azeotrope exhibits on each isotherm of acetic acid + PGME. The VLLE datawere also measured for water + PGMEA and water + PGMEA + PGME. The VLLE data could be correlatedwell by the NRTL and the UNIQUAC models accompanied with the Hayden-O'Connell (HOC) correlationfor water + PGMEA over a wide temperature range as linearly temperature-dependent parameters were adopted.The NRTL-HOC model, together with the parameters determined from the phase-equilibrium data of theconstituent binaries, predicted reasonably well the binodal curves of water + PGMEA + PGME. By adjustmentof six parameters simultaneously, the NRTL-HOC and the UNIQUAC-HOC models correlated satisfactorilythe ternary VLLE properties of water + PGMEA + PGME.