摘要
在常压下测定了甲苯+乙醇+1-癸基-3-甲基咪唑醋酸盐([C10MIM][OAc])三元物系的等压气液相平衡数据,使用Aspen软件中NRTL模型对三元气液相平衡数据进行关联,通过计算得到方程参数。实验结果表明,[C10MIM][OAc]的加入对甲苯有显著的盐析效应,[C10MIM][OAc]摩尔分数越大效果越明显,当[C10MIM][OAc]摩尔分数达到0.15时甲苯-乙醇的共沸现象完全消失。由NRTL模型计算出[C10MIM][OAc]打破甲苯-乙醇体系共沸的最小摩尔分数为0.1397。[C10MIM][OAc]可以用作分离甲苯-乙醇共沸体系的萃取剂。
Isobaric vapor-liquid equilibrium(VLE)data for the toluene+ethanol+1-decyl-3-methylimidazolium acetate([C10MIM][OAc])ternary system were measured at 101.3 kPa.The VLE data were correlated with the NRTL model in Aspen software,and the equation parameters were obtained by regression.[C10MIM][OAc]had a signi cant salting out effect on toluene.The higher content of[C10MIM][OAc],the more obvious the effect.The azeotropy of toluene-ethanol system completely disappeared with the[C10MIM][OAc]mole fraction reaching 0.15.The NRTL model calculation showed that the minimum mole fraction of[C10MIM][OAc]for stopping the toluene-ethanol system azeotropy was 0.1397.Therefore,[C10MIM][OAc]can be used as an entrainer for the extractive distillation of the toluene-ethanol azeotrope system.
作者
李文秀
潘成桥
曹颖
张弢
Li Wenxiu;Pan Chengqiao;Cao Ying;Zhang Tao(School of Chemical Engineering,Key Laboratory of Chemical Separation Technology Liaoning Province,Shenyang University of Chemical Technology,Shenyang Liaoning 110142,China)
出处
《石油化工》
CAS
CSCD
北大核心
2019年第12期1242-1247,共6页
Petrochemical Technology
基金
国家自然科学基金项目(21576116)
