Separation of Methano1-Toluene by Extractive Distillation

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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	ZHANG Luan
	ZHANG Jin-Wei
	ZHU Hong-Ji
	BAI Peng
	LI Bo
	SUN Chang

Keywords： extractive distillation 1, 2-dimethylbenzene methanol toluene

Received 2012-06-06;

Corresponding Authors: 白鹏，电话(022)27406369，E-mail:bp2008@eyou.com。 Email: bp2008@eyou.com

About author: 张鸾（1987-），硕士研究生，现从事化工分离方向的研究。

Cite this article:

ZHANG Luan, ZHANG Jin-Wei, ZHU Hong-Ji, BAI Peng, LI Bo, SUN Chang.Separation of Methano1-Toluene by Extractive Distillation[J] Chemcial Industry and Engineering, 2013,V30(5): 71-75