N—甲基甲酰胺+吡咯+烷烃三元体系相平衡测量和相关性研究
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摘要
为了从柴油中分离出氮化合物,选择N-甲基甲酰胺作为萃取过程的萃取剂。在常温(298.15K)常压下测量{NMF+吡咯+烷烃}的三元体系的液-液平衡数据。四个三元系统的三角图都被归于Trey Bal的I型系统,属于一个部分可混溶的系统。同时,使用NRTL和UNIQUAC活度系数模型对实验数据进行相关,UNIQUAC模型较NRTL显示出更好的相关性。此外,基于实验数据计算分配系数和选择性,以研究NMF对吡咯和吲哚的萃取能力。
In order to separate nitrogen compounds from diesel oil,N-methylformamide was selected as the extractant for the extraction process.The liquid-liquid equilibrium data of the ternary system of {NMF+pyrrole+alkane} was measured at normal temperature(298.15 K)at normal pressure.The triangles of the four ternary systems are attributed to Trey Bal's Type I system and are part of a partially miscible system.At the same time,the experimental data were correlated using the NRTL and UNIQUAC activity coefficient models,and the UNIQUAC model showed a better correlation than the NRTL.In addition,the partition coefficients and selectivity were calculated based on experimental data to investigate the extraction ability of NMF for pyrrole and hydrazine.
In order to separate nitrogen compounds from diesel oil,N-methylformamide was selected as the extractant for the extraction process.The liquid-liquid equilibrium data of the ternary system of {NMF+pyrrole+alkane} was measured at normal temperature(298.15 K)at normal pressure.The triangles of the four ternary systems are attributed to Trey Bal's Type I system and are part of a partially miscible system.At the same time,the experimental data were correlated using the NRTL and UNIQUAC activity coefficient models,and the UNIQUAC model showed a better correlation than the NRTL.In addition,the partition coefficients and selectivity were calculated based on experimental data to investigate the extraction ability of NMF for pyrrole and hydrazine.
引文
[1]杨梅.液液萃取法分离醋酸丁酯–丁醇–水的研究[D].南京:南京师范大学,2014.
[2]任玉佳,田文德.液液相平衡数据研究现状综述[J].青岛科技大学学报(自然科学版),2017,38(S1):7-10.
[2]任玉佳,田文德.液液相平衡数据研究现状综述[J].青岛科技大学学报(自然科学版),2017,38(S1):7-10.