化工学报2011，Vol.62Issue(9)：2541-2545,5.DOI:10.3969/j.issn.0438-1157.2011.09.023
萃取精馏分离苯-环己烷三元混合溶剂的效应
Effect of ternary mixed solvent for separation of benzene-cyclohexane by extractive distillation
摘要
Abstract
Ternary mixed solvents, composed of DMF (N, JV-dimethylformamde), DMSO (dimethylsulfoxide) and NMP (N-methylpyrrolidone) for separation of benzene and cyclohexane by extractive distillation, were examined in a vapor-liquid equilibrium experimental apparatus. The relative volatilities of benzene and cyclohexane were investigated. It was found that the ternary mixed solvents presented better " mixed solvent effect", and were superior to the single solvent. The relative volatilities of benzene and cyclohexane at different molar mixed solvent ratios were determined, and the optimal molar ratio of the ternary mixed solvents was obtained. The modified MDNUIFAC model was used to correlate the experimental data, and the vapor-liquid equilibrium of benzene-cyclohexane-solvents system can be described well by the modified MDUNIFAC model.关键词
苯/环己烷/三元混合溶剂/MDUNIFACKey words
benzene/ cyclohexane/ ternary mixed solvent/ MDUNIFAC分类
化学化工引用本文复制引用
张志刚,刘雷,李文秀,陈立峰..萃取精馏分离苯-环己烷三元混合溶剂的效应[J].化工学报,2011,62(9):2541-2545,5.基金项目
国家自然科学基金项目(21076126) （21076126）
辽宁省教育厅项目(2009A584). （2009A584）
