摘要
采用氟化钾或碳酸钾分离丙烯腈-水时,可产生水富集相(水相)和丙烯腈富集相(丙烯腈相).测定了丙烯腈-水-氟化钾、丙烯腈-水-碳酸钾体系在40℃时的液-液相平衡数据,用Pitzer理论和NRTL方程对液-液相平衡数据进行了理论计算.结果表明:产生的丙烯腈相中含有可以忽略的盐,水相中含有可以忽略的丙烯腈,因此用氟化钾或碳酸钾可以有效地分离丙烯腈-水体系;丙烯腈富集相的实验值与计算值接近,对丙烯腈-水-氟化钾体系绝对平均偏差为0.20%,对丙烯腈-水-碳酸钾体系绝对平均偏差为0.22%.
Both the water-rich phase （water phase） and the acrylonitrile-rich phase （acrylonitrile phase） can be formed when adding KF or K2CO3 into the acrylonitrile-water system. The liquid-liquid equilibrium （LLE） data for acrylonitrile-water-KF and acrylonitrile-water-K2CO3 systems are measured at 40 ~C, a theoretical cal- culation of LLE data is calculated from the Pitzer theory and the NRTL equation. The results show that the acrylonitrile phase contains negligible salt and water phase contains negligible acrylonitrile. The calculated resuits are proved to be close to the experimental data, the average absolute deviations for acrylonitrile-water-KF and acrylonitrile-water-K2CO3 are 0. 20% and 0. 22%, respectively.
出处
《烟台大学学报（自然科学与工程版）》
CAS
2007年第1期53-56,共4页
Journal of Yantai University(Natural Science and Engineering Edition)
基金
山东省资源节约专项计划项目(2006JY14)
烟台市科学技术发展计划项目(2006204)
