氨-水体系气液平衡模型的研究  

Vapor-liquid equilibrium model for ammonia-water system

作　　者：曾纪珺[1] 杨建明[1] 张伟[1] 郝妙莉[2] 郝志军[1] 吕剑[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065 [2]西安交通大学能动学院,陕西西安710049

出　　处：《化工进展》2010年第S2期87-90,共4页Chemical Industry and Engineering Progress

摘　　要：以Aspen Plus 10.1为计算工具,评价了16个热力学模型对氨-水体系气液平衡预测的适用性。在中低压下,适宜的模型有LK-PLOCK、PR、RKS和PSRK等状态方程模型以及WILS-RK、NRTL-RK、UNIQUAC-RK和ELECNTRL等活度系数模型。各模型预测的准确性有如下顺序:PSRK>NRTL-RK>PR>LK-PLOCK>RKS,各模型对液相的预测准确性要明显高于气相。The applicability of sixteen thermodynamic models for ammonia-water system vapor-liquid equilibrium prediction was studied with the help of Aspen Plus 10.1.It was found that LK-PLOCK,PR,RKS and PSRK equation of state models,WILS-RK,NRTL-RK,UNIQUAC-RK and ELECNTRL activity coefficient models were more suitable at low and medium pressures.The order of prediction accuracy is PSRK>NRTL-RK>PR>LK-PLOCK>RKS,and these models have better representation for liquid phase than vapor phase.

关 键 词：氨-水体系 气液平衡 状态方程模型 活度系数模型 

分 类 号：TQ013.1[化学工程]