HPP-H_2O-Na_2SO_4双水相液液相平衡的测定及NRTL方程关联  

Experimental and NRTL Modeling of Liquid-Liquid Equilibrium for HPP-H_2O-Na_2SO_4 Aqueous Two-Phase Systems

作　　者：郑争志 荆丹琳[1] 赵旭东 陈亚中 崔鹏 

机构地区：[1]合肥工业大学化学与化工学院可控化学与材料化工安徽省重点实验室,安徽合肥230009 [2]安徽大学化学化工学院,安徽合肥230601

出　　处：《高校化学工程学报》2017年第6期1259-1266,共8页Journal of Chemical Engineering of Chinese Universities

基　　金：安徽省重点科技攻关项目(08010202124)

摘　　要：本文测定了303.15~323.15 K的N,N'-二(2-羟丙基哌嗪(HPP)-水-硫酸钠)双水相系统不同浓度时液液相平衡数据,并采用NRTL方程对相平衡数据进行了关联。结果表明:在实验温度范围内,NRTL模型能很好地关联该三元两相物系的相平衡数据,计算值与实验值的相对均方根误差(RMSD)和平均相对误差(AAD)分别低于2%和1.5%,除HPP与Na_2SO_4之间的二元交互作用参数外,其余二元交互参数均会随着温度发生变化,其中Na_2SO_4对H_2O的二元交互作用参数受温度的影响最明显,313.15 K时达到最大。Liquid-liquid equilibrium data of HPP-H20-Na2SO4 aqueous two-phase systems were determined under different concentrations at 303.15-323.15 K. The liquid-liquid equilibrium data were correlated by NRTL equation. The results show that good agreements can be obtained with the experimental data. The root-mean-square deviation （RMSD） and the average absolute deviation （AAD） between calculated and experimental values are less than 2% and 1.5%, respectively. The binary interaction parameters change with temperature （except the binary interaction parameters between HPP and Na2SO4）. The binary interaction parameter of Na2SO4 to H20 reaches maximum at 313.15 K, which is mostly affected by temperature.

关 键 词：N N’-二(2-羟丙基)哌嗪 双水相 液液相平衡 NRTL模型 

分 类 号：TQ013.1[化学工程]