| 动态法筛选萃取精馏分离乙酸丁酯-丁醇-水共沸物的溶剂 |
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| 引用本文： | 王卫兵,赵跃强,黄健. 动态法筛选萃取精馏分离乙酸丁酯-丁醇-水共沸物的溶剂[J]. 化学工程, 2010, 38(4) |
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| 作者姓名： | 王卫兵 赵跃强 黄健 |
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| 作者单位： | 运城学院应用化学系,山西运城,044000;淮海工学院化工系江苏省海洋生物技术重点建设实验室,江苏连云港,222005 |
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| 基金项目： | 山西省教育厅资助项目(2002063);;淮海工学院江苏省海洋生物技术重点建设实验室研究基金资助项目(2008HS013) |
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| 摘 要： | 采用基于改进UNIFAC模型的动态法对萃取精馏法分离乙酸丁酯-丁醇-水共沸物的萃取剂进行了计算机高通量筛选,根据适宜萃取剂选取原则和计算结果,经综合考虑选出较好的萃取剂为甲醇、乙醇、环氧乙烷。选取乙醇进行实验验证,测定了乙酸丁酯-丁醇-水-乙醇体系的部分汽液平衡实验数据;泡点温度tb、加入溶剂后平衡汽相组成的计算值与实验值吻合良好;以乙醇作为萃取剂具有热负荷小、毒性低和热稳定性好的优点。结果表明,采用基于改进UNIFAC模型的动态法筛选萃取精馏法的溶剂具有良好的可靠性和适用性,可以极大地节省人力、物力和财力。
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| 关 键 词： | 改进UNIFAC模型 汽液平衡 萃取精馏 共沸物 萃取溶剂 |
Screening solvents by dynamic method for extractive distillation and separation of butyl acetate-1-butanol-water azeotropic mixture |
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| WANG Wei-bing,ZHAO Yue-qiang,HUANG Jian. Screening solvents by dynamic method for extractive distillation and separation of butyl acetate-1-butanol-water azeotropic mixture[J]. Chemical Engineering, 2010, 38(4) |
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| Authors: | WANG Wei-bing ZHAO Yue-qiang HUANG Jian |
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| Affiliation: | 1.Department of Applied Chemistry;Yuncheng University;Yuncheng 044000;Shanxi Province;China;2.Jiangsu Key Laboratory of Marine Biotechnology;Department of Chemical Engineering;Huaihai Institute of Technology;Lianyungang 222005;Jiangsu Province;China |
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| Abstract: | The extractive solvents for separating butyl acetate-1-butanol-water azeotropic mixture were processed with high-throughput screening by dynamic method based on modified UNIFAC model.According to the proper solvents selection principle and the prediction results,the better extractive solvents were determined as methanol,ethanol,ethylene oxide.In the case of ethanol as extractive solvent,the vapor-liquid equilibria(VLE) data of butyl acetate-1-butanol-water-ethanol system were measured through the experiment... |
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| Keywords: | modified UNIFAC model vapor-liquid equilibria extractive distillation azeotropic mixture extractive solvent |
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