Vapor-Liquid Equilibria for Mixtures Containing Methanol, Adipic acid monomethyl ester and Dimethyl adipate

• Main Authors: Cheng,Hi Lai, 賴政海
• Other Authors: Ming Jer Li
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/90367645224216536976

碩士 === 國立臺灣科技大學 === 化學工程系 === 92 === Abstract A static-type apparatus with a liquid-phase circulation loop was used to measure isothermal vapor-liquid equilibrium ( VLE ) data for the binary systems of methanol + adipic acid monomethyl ester and methanol + dimethyl adipate at temperatures from 353.15 K to 433.15 K. The experimental results exhibited no azeotrope formation. These binary VLE data were correlated satisfactorily with the NRTL-HOC and the UNIQUAC-HOC models, respectively. The NRTL parameters of methanol/adipic acid and water/adipic acid were also determined from the saturated pressures of binary system of methanol +adipic acid and those of ternary system of water + methanol + adipic acid. The saturated pressures of the ternary system can be predicted to within reasonable accuracy when the NRTL parameters of methanol/adipic acid and water /adipic acid where obtained from the solid-liquid equilibrium data. These VLE data and model parameters are required for the process development of recovery of adipic acid from the waste stream with reactive distillation method.