从正己烷中提取苯:混合萃取剂的筛选及液-液相平衡数据测定  

Extraction of benzene from n-hexane: Screening of mixed extractants and liquid-liquid equilibrium data measurements

作　　者：李颜静 赵雨欣 孙晓岩[1] 项曙光[1] 赵文英 LI Yanjing;ZHAO Yuxin;SUN Xiaoyan;XIANG Shuguang;ZHAO Wenying(Institute of Process Systems Engineering,Qingdao University of Science&Technology,Qingdao 266042,China;College of Chemistry and Chemical Engineering,Qilu Normal University,Jinan 250200,China)

机构地区：[1]青岛科技大学过程系统工程研究所,山东青岛266042 [2]齐鲁师范学院化学与化工学院,山东济南250200

出　　处：《高校化学工程学报》2024年第3期375-383,共9页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金(22178190);国家青年自然科学基金(22008129)。

摘　　要：针对芳烃抽提过程中有机溶剂不能兼顾高溶解度和高选择性的壁垒,利用COSMO-RS模型对多种萃取剂进行筛选,并通过液液平衡实验测定苯+正己烷+混合萃取剂的液液平衡数据,发现N-甲基吡咯烷酮(NMP)与环丁砜(SUL)质量比为1:4是性能最优的萃取剂。利用Othmer-Tobias及Hand方程对实验数据的可靠性进行验证,同时通过NRTL及UNIQUAC模型对实验数据进行回归,计算值与实验值吻合良好,表明两模型均可用于芳烃抽提的计算,为工业上芳烃抽提模拟计算提供了数据支持。Organic solvents cannot have both high solubility and high selectivity during aromatics extraction.A variety of extractants were screened by COSM-RS model,and the liquid-liquid balance data of benzene+n-hexane+mixed extractants were determined by liquid-liquid equilibrium experiments.The results show that the mass ratio of N-methylpyrrolidone(NMP)to sulfolane(SUL)=1:4 is the best extractant.Othmer-Tobias and Hand equations were used to verify the reliability of the experimental data,and NRTL and UNIQUAC models were used for experimental data regression.The calculated results were in good agreement with the experimental data.The results indicate that both models can be used for the calculation of aromatics extraction and provide data support for industrial aromatics extraction simulation.

关 键 词：芳烃 液液萃取 混合萃取剂 COSMO-RS模型 

分 类 号：TQ013.1[化学工程]