Indexed by:会议论文

Date of Publication:2016-06-26

Included Journals:EI

Volume:2016-January

Page Number:25-29

Abstract:The thermodynamic characters of mixture gas (CO2/N2) hydrates were investigated with five kinds of N2concentrations. Hydrate phase equilibrium conditions were obtained using isochoric method in a high pressure vessel. The experimental results indicated that the presence of N2gas brings higher equilibrium pressure for mixture gas hydrates than pure CO2hydrate at the same temperature. The equilibrium pressure increased with the increase of N2concentration. An improved model was proposed to predict CO2/N2hydrates phase equilibrium in porous medium, which is based on the traditional thermodynamic model of van der Waals & Platteeuw. © Copyright 2016 by the International Society of Offshore and Polar Engineers (ISOPE).