Isobaric Vapor鈥揕iquid Equilibrium for the Extractive Distillation of Acetonitrile + Water Mixtures Using Dimethyl Sulfoxide at 101.3 kPa

详细信息    查看全文

• 作者：Zhigang Zhang ; Ming Lv ; Donghao Huang ; Peng Jia ; Dezhang Sun ; Wenxiu Li
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2013
• 出版时间：December 12, 2013
• 年：2013
• 卷：58
• 期：12
• 页码：3364-3369
• 全文大小：398K
• 年卷期：v.58,no.12(December 12, 2013)
• ISSN：1520-5134

文摘

Vapor鈥搇iquid equilibrium (VLE) data for the system formed by acetonitrile, water, and dimethyl sulfoxide (DMSO) at 101.3 kPa are measured in this paper. The data have been correlated by the classical thermodynamic models: Wilson, universal quasichemical activity coefficient (UNIQUAC), and nonrandom two-liquid (NRTL). The results indicate that all of the models can correlate the VLE data successfully and Wilson model performances the best. The effects of DMSO with various contents on the acetonitrile + water system are explored. From the results, the azeotrope is eliminated by DMSO by the means of improving their relative volatility. Hence, DMSO is an effective solvent for separating the acetonitrile + water binary azeotropic system.