Liquid-vapor equilibrium for ternary natural gas system

Technical Report · Tue Sep 01 04:00:00 EDT 1981

OSTI ID:6224878

Kidnay, A J; Sloan, E D

Vapor liquid equilibrium (VLE) data were measured for the nitrogen + carbon dioxide binary system at 220 and 240 K and for the methane + carbon dioxide system at 219.26, 240 and 270 K. Ternary VLE measurements were made for the system N + CH/sub 4/ + CO/sub 2/ at 220 K and 6.080, 9.119 and 12.159 MPa, 233.15 K at 8.106 MPa, and 240 K 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 the Lee-Kesler corresponding states correlation and the Peng-Robinson equation of state. The multifluid and Lee-Kesler methods give comparable results for the constituent binaries of the N/sub 2/ + CH/sub 4/ + CO/sub 2/ system. However, the multifluid model predictions for the ternary system were superior to the predictions of the Lee-Kesler method. The Peng-Robinson equation of state was found to be better than both corresponding states methods for both binary and ternary system VLE predictions. None of the methods produced good representation near the critical points of the binary and ternary systems.

• Research Organization: Colorado School of Mines, Golden (USA)
• OSTI ID: 6224878
• Report Number(s): N-8310160; PB-82-227679; GRI-82/0008
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
033000* -- Natural Gas-- Properties & Composition
ALKANES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
ELEMENTS
ENERGY SOURCES
EQUATIONS
EQUATIONS OF STATE
EQUILIBRIUM
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROCARBONS
METHANE
NATURAL GAS
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
VAPORS