Effect of water on extractive desulfurization of fuel oils using ionic liquids： A COSMO-RS and experimental study

作     者：Zhen Song Dian Yu Qian Zeng Jingjing Zhang Hongye Cheng Lifang Chen Zhiwen Qi 

作者机构：Max Planck Partner Group at the State Key Laboratory of Chemical Engineering School of Chemical Engineering East Chino University of Sdence and Technology Shanghai 200237 China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2017年第25卷第2期

页      面：159-165页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：Supported by the National Natural Science Foundation of China(NSFC U1462123) PetroChina Innovation Foundation Fundamental Research Funds for the Central Universities of China(22201313007) 

主　　题：脱硫效果 离子液体 液体萃取 燃料油 进水 实验 浓度范围 萃取性能 

摘      要：When evaluating ionic liquids(ILs) for extractive desulfurization(EDS) of fuel oils, the inevitable presence of water in the system may have a significant and in many cases strongly negative effect. However, few studies have considered this particular issue and a promoted water effect on EDS is scarcely reported. In this work,COSMO-RS was firstly employed to calculate the capacity and selectivity for EDS of various IL/H_2 O mixtures,which cover different IL characters and a wide water concentration range. Experiments were then conducted with a representative IL [C_4MIM][H_2PO_4], whose stable and even promoted extraction performance with a small amount of water was suggested by COSMO-RS. Through analyses of the desulfurization ratio, the crosssolubility and the water content in the desulfurized fuel, the promoted effect of water within a certain range(b 10 wt%) was experimentally demonstrated. Moreover, such effect of water was explained combining the viscosity, the solvent–solute interactions and the COSMO-RS based analysis.