天然气中低碳烷烃的汽-液平衡研究

摘要

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.%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。