Liquid–Liquid Extraction of Benzene and Cyclohexane Using Sulfolane-Based Low Transition Temperature Mixtures as Solvents: Experiments and Simulation
Liquid–Liquid Extraction of Benzene and Cyclohexane Using Sulfolane-Based Low Transition Temperature Mixtures as Solvents: Experiments and Simulation
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DOI：
10.1021/acs.energyfuels.8b01524
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发表时间：
2018-06
期刊：
影响因子：
5.3
通讯作者：
Shoutao Ma;Jinfang Li;Lumin Li;Xianyong Shang;Shikai Liu;Chang-guo Xue;Lanyi Sun
中科院分区：
文献类型：
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作者：
Shoutao Ma;Jinfang Li;Lumin Li;Xianyong Shang;Shikai Liu;Chang-guo Xue;Lanyi Sun
苯和环己烷的分离被认为是石化工业中最具挑战性的工艺之一。本文采用低温混合物（LTTMs）作为分离苯和环己烷的溶剂。选择的lttm分别为：亚砜-四丁基溴化铵5:1和乙二醇-盐酸三甲胺5:1，在40℃常压下实验测定了苯-环己烷- lttm的液液平衡（LLE）数据。此外，在LLE数据的基础上，考察了氢键供体（HBD）丁砜和氢键受体（HBA）四丁基溴化铵的摩尔比对萃取性能的影响。结果表明，当环己烷与四丁基溴化铵的摩尔比为5:1时，LTTM的提取效果最佳。此外，利用苯-环己烷- lttms三元体系的LLE数据拟合了NRTL活度系数模型的参数。基于NRTL模型…
The separation of benzene and cyclohexane is considered to be one of the most challenging processes in the petrochemical industry. In this paper, low transition temperature mixtures (LTTMs) were used as solvents for the separation of benzene and cyclohexane. The selected LTTMs were sulfolane–tetrabutylammonium bromide 5:1 and ethylene glycol–trimethylamine hydrochloride 5:1, and liquid–liquid equilibrium (LLE) data of benzene–cyclohexane–LTTMs were experimentally determined at 40 °C under a normal atmosphere. Moreover, the effects of the mole ratio of hydrogen bond donor (HBD) sulfolane and hydrogen bond acceptor (HBA) tetrabutylammonium bromide on extraction performance were also observed based on the LLE data. It is found that, when the mole ratio of sulfolane to tetrabutylammonium bromide is 5:1, LTTM has the best extraction performance. In addition, the LLE data of the benzene–cyclohexane–LTTMs ternary system were used to fit parameters of the NRTL activity coefficient model. Based on the NRTL model t...