水合物法分离CH4-C2H6-H2O体系的相平衡研究

本文进行了水合物法分离CH4-C2H6体系的气体-水合物相平衡实验研究，考察了水合物促进剂四氢呋喃（THF）和十二烷基硫酸钠（SDS）对水合物法分离CH4-C2H6体系的影响，通过改变原料气的组成，做出了水合物法分离CH4-C2H6体系的T-P-x—y曲线图。研究发现．在纯水体系中采用水合物法分离CH4-C2H6混合气体，分离效果不明显；当在水溶液中加入水合物促进剂四氢呋喃（THF）和十二烷基硫酸钠（SDS）后，水合物法可以很好地实现CH4-C2H2体系的分离，解决了采用传统深冷分离方法分离CH4-C2H6体系时，由于CH1、C2H6沸点较低而造成能耗较高的问题，开发出了一种新型分离CH4-：C2H6；体系的方法，所得结果对水合物法分离（CH4-C2H6）技术的开发与应用具有重要的指导意义。

Study on the Phase Equilibrium of Hydrate Separation Processes for Methane-Ethane-H2O Systems

Hydrate phase diagrams and their effect on separation processes are shown for binary close-boiling pairof ethane +methane. Normally,vapor-liquid hydrocarbonse paration processes are used for such compounds. However,close-boiling binaries require so many equilibrium stages that cost dictates investigation of other methods. Here we show the advantage of idealized,equilibrium,separation processes for the binary using hydrate-liquid hydrocarbon-aqueous separations.