Ternary Liquid-Liquid Equilibrium for Systems of Fatty Acid Methyl Ester(Methyl Palmitate/Methyl Stearate)+Ethanol+Glycerol at Atmospheric Pressure

被引：0
|
作者：
夏淑倩 [1 ,2 ,3 ]
罗慧娟 [1 ,2 ,3 ]
马沛生 [1 ,2 ,3 ]
机构：
[1] Key Laboratory for Green Chemical Technology of Ministry of Education
[2] Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)
[3] School of Chemical Engineering and Technology, Tianjin University
来源：
Transactions of Tianjin University | 2015年 / 21卷 / 05期
关键词：
liquid-liquid phase equilibrium; fatty acid methyl ester; ethanol; NRTL model; biodiesel;
D O I：
暂无
中图分类号：
TE667 [从其他原料提取石油]; O642.42 [];
学科分类号：
070304 ; 081702 ; 081704 ;
摘要：
Liquid-liquid equilibrium data of two ternary systems methyl palmitate+ethanol+glycerol and methyl stearate+ethanol+glycerol at(318.2 and 333.2)K and atmospheric pressure were measured. The values of distribution coefficient and selectivity were calculated, which indicates that glycerol can be separated from fatty acid ester by using ethanol as an extraction solvent. The consistency of the isothermal tie-line data were checked by the Othmer-Tobias equation. The correlation coefficients R2 are higher than 0.993,9 for all the fitted curves. The NRTL activity coefficient model was applied to the correlation of the measured tie-line data. The root mean square deviation(RMSD)values are less than 0.007 for all the systems, which shows a good predictive capability of this model for such systems.
引用
收藏
页码：392 / 399
页数：8
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