| 萃取精馏分离甲醇-甲苯共沸物的研究 |
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| 引用本文： | 张鸾,张锦威,朱宏吉,白鹏,李博,孙畅.萃取精馏分离甲醇-甲苯共沸物的研究[J].化学工业与工程,2013,30(5):71-75. |
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| 作者姓名： | 张鸾 张锦威 朱宏吉 白鹏 李博 孙畅 |
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| 作者单位： | (天津大学化工学院，天津 300072) |
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| 摘 要： | 利用UNIFAC基团贡献法对常用萃取剂进行了筛选，选取邻二甲苯作为该二元共沸物的萃取剂，并通过汽液平衡实验对其分离效果进行了验证；进行甲醇 甲苯分离的间歇萃取精馏实验考察所选萃取剂的效果。结果表明：邻二甲苯能够有效提高甲醇 甲苯的相对挥发度。间歇萃取精馏塔塔板数为30，溶剂比为1，恒回流比(R=3)操作下塔顶得到摩尔分数为99.688%的甲醇产品。
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| 关 键 词： | 萃取精馏 邻二甲苯 甲醇 甲苯 |
Separation of Methano1-Toluene by Extractive Distillation |
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| ZHANG Luan,ZHANG Jin-wei,ZHU Hong-ji,BAI Peng,LI Bo,SUN Chang.Separation of Methano1-Toluene by Extractive Distillation[J].Chemical Industry and Engineering,2013,30(5):71-75. |
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| Authors: | ZHANG Luan ZHANG Jin-wei ZHU Hong-ji BAI Peng LI Bo SUN Chang |
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| Affiliation: | (School of Chemical Engineering and Technology，Tianjin University，Tianjin 300072，China)
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| Abstract: | 1,2-dimethylbenzene was chosen as solvent through UNIFAC group contribution method and its effect was verified by vapor-liquid equilibrium experiment.The effectiveness of the selected solvent was investigated by batch extractive distillation experiment.The results show that 1,2-dimethylbenzene can increase the relative volatility significantly.The batch extractive distillation was carried out in a packed column of 30 theoretical plates.With the constant reflux ratio of 3 and the solvent mole ratio of 1∶1,the product mole fraction of methanol reaches 99.688%. |
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| Keywords: | extractive distillation 1 2-dimethylbenzene methanol toluene |
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