Liquid-Vapor Equilibria for Ternary Natural Gas Systems

摘要

Vapor liquid equilibrium (VLE) data were measured for the nitrogen + carbon dioxide binary system at 220 and 240K and for the methane + carbon dioxide system at 219.26, 240 and 270K. Ternary VLE measurements were made for the system N2 + CH4 + CO2 at 220K and 6.080, 9.119 and 12.159 MPa, 233.15K at 8.106 MPa, and 240K at 7.093, 9.119 and 12.159 MPa. The multifluid reference corresponding states method proposed by Teja and Rice was applied to VLE calculations and the results of this method for the binary and ternary systems were compared with the results of this method for the binary and ternary systems were compared with the results of the Lee-Kesler corresponding states correlation and the Peng-Robinson equation of state.