水-环己酮-甲基异丁基酮液液相平衡数据的测定与关联

doi:10.3866/PKU.WHXB201706233

摘要/Abstract

摘要：

为了给以甲基异丁基酮为溶剂含环己酮废水萃取过程的设计和流程模拟计算提供数据支撑，本文测定了常压下，水+环己酮+甲基异丁基酮（MIBK）三元体系在303.15、313.15及323.15 K的液液相平衡数据。据相平衡数据计算了分配系数和分离因子，所有的分离因子均远大于1，表明MIBK从水中萃取环己酮是可行的；Hand方程和Bachman方程的相关系数在0.99以上，表明实验数据具有较好的一致可靠性。同时，采用NRTL和UNIQUAC活度状态方程对实验数据进行了关联，回归得到了该三元物系的二元交互参数，结果表明两种模型均能很好关联实验数据，实验值和模拟值的相对均方根差（RMSD）低于0.5%。

关键词: 相平衡, 废水, 环己酮, MIBK, NRTL, UNIQUAC, 萃取

Abstract:

Fundamental data of liquid-liquid equilibria (LLE) are important in the design and development of extraction processes. In order to obtain such data for the extraction of cyclohexanone from wastewater using methyl isobutyl ketone (MIBK) as a solvent, the MIBK-cyclohexanone-water ternary system was studied at 303.15, 313.15, and 323.15 K under atmospheric pressure. The distribution coefficient and separation factors for this system were calculated and it was found that all separation factors were much larger than one, which demonstrated the feasibility of using MIBK as a solvent to treat the cyclohexanone-containing wastewater. Additionally, the Hand and Bachman equations were both used to check the reliability and consistency of the obtained experimental data. The squares of the linear correlation coefficients were determined to be greater than 0.99, indicating excellent agreement. The NRTL and the UNIQUAC activity coefficient models were also employed to correlate the experimental results obtained for this ternary system. The root mean square deviation (RMSD) values of the two models were evaluated to be less than 0.50%. Furthermore, the binary interaction parameters of the ternary system were also obtained

Key words: Phase equilibria, Waste water, Cyclohexanone, MIBK, NRTL, UNIQUAC, Extraction

崔鹏,刘海,于雪敏,夏青,李青松. 水-环己酮-甲基异丁基酮液液相平衡数据的测定与关联[J]. 物理化学学报, 2018, 34(1), 65-72. doi: 10.3866/PKU.WHXB201706233

Peng CUI,Hai LIU,Xue-Min YU,Qing XIA,Qing-Song LI. Measurement and Correlation of Liquid-Liquid Equilibrium Data for the Water+Cyclohexanone+Methyl Isobutyl Ketone Ternary System[J]. Acta Phys. -Chim. Sin. 2018, 34(1), 65-72. doi: 10.3866/PKU.WHXB201706233

链接本文: https://www.whxb.pku.edu.cn/CN/10.3866/PKU.WHXB201706233

https://www.whxb.pku.edu.cn/CN/Y2018/V34/I1/65

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