离子液体萃取精馏分离甲醇-乙腈共沸体系
Separation of Methanol-Acetonitrile Azeotrope System by Ionic Liquid Extractive Distillation
李丽 1肖孟杰 1李文秀 1马帅 1张弢1
作者信息
- 1. 沈阳化工大学 辽宁省化工分离技术重点实验室,辽宁 沈阳 110142
- 折叠
摘要
使用离子液体 1-己基-3-甲基咪唑六氟磷酸盐([HMIM][PF6])作为分离甲醇和乙腈共沸物系的夹带剂,在101.3 kPa下获得了三元气液相平衡(VLE)数据,用非随机双液(NRTL)模型关联实验数据,得到基于 NRTL 模型的二元交互作用参数,同时计算出离子液体打破共沸需要的最小摩尔分数为0.036 7.最后,用过量焓分析解释分离机理.
Abstract
The ionic liquid 1-hexyl-3-methylimidazolium hexafluorophosphate([HMIM][PF6])was used as the entrainer for separating the azeotrope system of methanol and acetonitrile.The ternary vapor-liquid equilibrium(VLE)data were obtained at 101.3 kPa.The experimental data were correlated with the non-random dual-liquid(NRTL)model to obtain the binary interaction parameters.At the same time,the minimum mole fraction required to break the azeotrope was calculated to be 0.036 7.The separation mechanism was explained by excess enthalpy analysis.
关键词
甲醇/乙腈/离子液体/NRTL/过量焓分析Key words
Methanol/Acetonitrile/Ionic liquid/NRTL/Excess enthalpy analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据