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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。
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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基本信息:
DOI：10.13353/j.issn.1004.9533.2013.05.002
中图分类号:TQ028.13
引用信息:
[1]张鸾,张锦威,朱宏吉等.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(05):71-75.DOI:10.13353/j.issn.1004.9533.2013.05.002.
基金信息: