天然气中低碳烷烃的汽-液平衡研究  

Calculation of Liquid-Vapor Phase Equilibrium of LightAlkanes in Natural Gas

作　　者：王文珍[1] 王登海 郑欣 李迓红[1] 李浩勇[1] 朱玉琴[1] 

机构地区：[1]西安石油大学,陕西西安710065 [2]长庆科技工程有限公司,陕西西安710065

出　　处：《广州化工》2014年第16期13-16,共4页GuangZhou Chemical Industry

摘　　要：研究建立了天然气体系中汽-液两相相平衡理论模型并进行了计算。通过自主研发的热力学计算软件,使用PR方程,针对我国某LNG厂的天然气体系进行了相平衡计算,并做出了天然气的相包络图,为天然气的液化工艺设计提供可靠的数据支持和理论依据。The computational model of liquid -vapor phase equilibrium in nature gas was established based on PR equation.For the natural gas system of an LNG plant in China , liquid-vapor phase equilibrium of every component in nature gas was calculated , and thephase diagram was drawn and the trends of vapor -liquid phase equilibrium constant k with the change of temperature and pressure were analyzed and summarized.The theoretical model , calculated data and results had important theoretical significance to the basic study of LNG industry in China.

关 键 词：天然气 汽-液相平衡 平衡常数 压力 

分 类 号：TE642[石油与天然气工程—油气加工工程]