R170+R23系的汽液液相平衡研究  

VAPOR-LIQUID-LIQUID EQUILIBRIUM FOR THE R170+R23 SYSTEM

作　　者：张宇[1] 公茂琼[1] 刘加永[1] 朱洪波[1] 吴剑峰[1] 

机构地区：[1]中国科学院理化技术研究所,北京100080

出　　处：《工程热物理学报》2007年第5期745-747,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.50576102)

摘　　要：针对PR-HV-NRTL模型对R170(乙烷)+R23(三氟甲烷)系在低温下的异常计算结果,采用扩展的双液相模型对低温区进行了计算,从理论上预测出该混合物出现液相分离的可能;对185.26 K温度下的汽液液相平衡进行了初步的实验,首次证实了R170+R23系存在汽液液相平衡现象,这被认为是发现的第三种具有汽液液相平衡特性的HC+HFC混合物。According to the unusual results obtained in the VLE calculations for the R170 ＋ R23 system at low temperatures, the enhanced PR-HV-NRTL model enables VLLE calculations were used to predict the mutual solubility of this system. A primary VLLE measurement was performed at 185.26 K, and a liquid split phenomenon was obviously observed. And thus the R170 ＋ R23 system can be regarded as the third HC ＋ HFC mixture which shows liquid phase split behavior.

关 键 词：乙烷 三氟甲烷 汽液液 液相分离 相平衡 

分 类 号：TK123[动力工程及工程热物理—工程热物理]