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�ؼ���� ȡ�� UNIFAC�Ľ�ģ�� N-�һ��Ҷ�� MATLAB

Abstract�� Based on modified UNIFAC model and MATLAB,a program has been developed for calculating the relative volatility of extractive distillation.According to the basic principle for selecting solvent for separating azeotrope system by extractive distillation,the soluble capacity,the relative volatility and the regenerative performance of solvent,the suitable solvents for separating ethylenediamine-N-ethylethylenediamine system by extractive distillation have been determined.The results show that the suitable solvents are ethylene glycol and glycerol,in which glycerol is better.When ethylene glycol and glycerol are solvents,N-ethylethylenediamine will become volatile component.At the same time,the effects of different raw material compositions and solvent ratio on the relative volatility were discussed.The results show that solvent ratio is one of the most important factors.The bigger the solvent ratio is,the greater the relative volatility of system is.The effect of raw material composition on relative volatility is weak.

Keywords�� extractive distillation modified UNIFAC model N-ethylethylenediamine MATLAB

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��ѩ��, ��ϼ, ŷ��, ��.N-�һ��Ҷ��Ҷ��ϵ��ȡ��ܼ�ѡ��[J]. ��ѧ��ҵ�빤��, 2010,27(5): 406-410

HUANG Xue-Li, LI Yong-Xia, OU Chuan-Qi , LI Hui.Solvent Selection for Separating N-ethylethylenediamine-Ethylenediamine System by Extractive Distillation[J]. Chemcial Industry and Engineering, 2010,27(5): 406-410