高等学校化学学报

高等学校化学学报

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顺丁烯二酸酐与邻苯二甲酸二甲酯二元体系在4.00, 8.00和12.00 kPa下的等压气液平衡

徐伟, 朱荣娇, 刘志华, 田宜灵, 李丹   

  1. 天津大学理学院化学系, 天津 300072
  • 收稿日期:2005-12-26 修回日期:1900-01-01 出版日期:2006-12-10 发布日期:2006-12-10
  • 通讯作者: 田宜灵

Isobaric Vapor-liquid Equilibria of Binary System of Maleic Anhydride and Dimethyl Phthalate at 4.00, 8.00 and 12.00 kPa

XU Wei, ZHU Rong-Jiao, LIU Zhi-Hua, TIAN Yi-Ling, LI Dan   

  1. Department of Chemistry, Institute of Science, Tianjin University, Tianjin 300072, China
  • Received:2005-12-26 Revised:1900-01-01 Online:2006-12-10 Published:2006-12-10
  • Contact: TIAN Yi-Ling

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摘要： 采用沸点仪测定了顺丁烯二酸酐和邻苯二甲酸二甲酯二元体系在4.00, 8.00和12.00 kPa下的等压气液平衡数据以及纯DMP组分饱和蒸气压数据, 将实验数据回归得到了纯DMP在417~525 K范围内的Antoine方程. 根据实验平衡温度、 压力和组成数据进一步回归得到NRTL方程参数, 推算出平衡气液相组成, 并利用UNIFAC方程对实验数据进行了预测, 其结果与沸点仪测定结果及NRTL拟合的结果基本相符.

关键词: 顺丁烯二酸酐, 邻苯二甲酸二甲酯, NRTL方程, UNIFAC模型, 气液平衡

Abstract: Isobaric vapor-liquid equilibrium(VLE) data for the binary system of maleic anhydride(MAN)+dimethyl phthalate(DMP) at 4.00, 8.00 and 12.00 kPa were determined by using the ebulliometric method. Also, saturated vapor pressures of pure DMP were measured and Antoine constants were obtained. The parameters of the NRTL model for the binary system were obtained by calculating the equilibrium compositions of the liquid and vapor phase with the experimental equilibrium temperatures, pressures and feed compositions. Moreover, VLE data for the binary system were predicted by use of the UNIFAC model. The predicted results were compared with those from the ebulliometric method, and showed a good agreement.

Key words: Maleic anhydride, Dimethyl phthalate, NRTL model, UNIFAC model, Vapor-liquid equilibrium

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