Thermodynamic modeling of phase and tension behavior of CO/sub 2//hydrocarbon systems
The gradient theory of inhomogeneous fluid is used to predict phase splits and compositions, interfacial composition profiles, and interfacial tension (IFT) of liquid-liquid, liquid-vapor, and liquid-liquid-vapor equilibria in binary and ternary mixtures of CO/sub 2/ with propane and decane. The theory's input are the equation of state (EOS) of homogeneous fluid and the influence parameters of inhomogenous fluid. An efficient computational algorithm is presented for simultaneously generating phase behavior, critical points, interfacial composition profiles, and tension between the phases. Most calculations are made with the Peng-Robinson EOS and the geometric mixing rule for the influence parameters. Use of other EOS and alternative schemes for choosing the influence parameters is explored.
- Research Organization:
- Univ. of Minnesota
- OSTI ID:
- 6405635
- Journal Information:
- SPEJ, Soc. Pet. Eng. J.; (United States), Journal Name: SPEJ, Soc. Pet. Eng. J.; (United States) Vol. 25:2; ISSN SSPJD
- Country of Publication:
- United States
- Language:
- English
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