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首页> 外文期刊>Separation and Purification Technology >Azeotrope-breaking using [BMIM] [MeSO4] ionic liquid in an extraction column
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Azeotrope-breaking using [BMIM] [MeSO4] ionic liquid in an extraction column

机译：在萃取塔中使用[BMIM] [MeSO4]离子液体破坏共沸物

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摘要

Ionic liquids have become one of the growing "green" media for engineers due to their remarkable physicochemical properties. The applications of these solvents in extraction processes have been extensively investigated and reviewed. This paper reports the ability of the ionic liquid (IL), 1-butyl-3-methylimidazolium methyl sulfate [BMIM] [MeSCU] to act as an extraction solvent in petrochemical process for the removal of heptane from its azeotropic mixture with ethanol. The suitability of [BMIM] [MeSO4] is assessed by means the experimental liquid-liquid equilibrium (LLE) for the ternary system heptane+ethanol + [BMIM] [MeSO4] at 298.15 K. The solute distribution ratio, the selectivity and the extraction factor suggest the efficiency of the IL used like solvent A comparison with other IL, in terms of solvent capacity, is enclosed. As design of a separation process requires knowledge of the phase equilibria, NRTL equation is employed to correlate LLE data. Extraction process with this solvent is simulated using conventional software and the obtained results are shown. Experimental data are obtained in a laboratory-scale packed column extraction system for the separation of this azeotropic mixture using [BMIM] [MeSO4]. A comparison between the experimental column data together with simulated report are enclosed.
机译：离子液体由于其卓越的理化特性，已成为工程师们日益增长的“绿色”介质之一。这些溶剂在萃取过程中的应用已得到广泛研究和审查。本文报道了离子液体（IL）甲基硫酸1-丁基-3-甲基咪唑鎓硫酸盐（BMIM）[MeSCU]在石油化学工艺中用作与乙醇共沸混合物中除去庚烷的萃取溶剂的能力。 [BMIM] [MeSO4]的适用性是通过在298.15 K下对三元系统庚烷+乙醇+ [BMIM] [MeSO4]进行实验液-液平衡（LLE）来评估的。溶质分布比，选择性和萃取因子暗示了像溶剂一样使用的IL的效率。在溶剂容量方面，与其他IL进行了比较。由于分离过程的设计需要了解相平衡，因此采用NRTL方程来关联LLE数据。使用常规软件模拟该溶剂的萃取过程，并显示获得的结果。在实验室规模的填充柱萃取系统中使用[BMIM] [MeSO4]分离该共沸混合物获得了实验数据。随附实验列数据与模拟报告之间的比较。

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