HYPERBARIC RESERVOIR FLUIDS - HIGH-PRESSURE PHASE-BEHAVIOR OF ASYMMETRIC METHANE PLUS N-ALKANE SYSTEMS

被引：21

作者：

FLOTER, E ^{[1
]}

DELOOS, TW ^{[1
]}

ARONS, JD ^{[1
]}

机构：

[1] DELFT UNIV TECHNOL,FAC CHEM ENGN & MAT SCI,APPL THERMODYNAM & PHASE EQUILIBRIA LAB,2628 BL DELFT,NETHERLANDS

来源：

INTERNATIONAL JOURNAL OF THERMOPHYSICS | 1995年 / 16卷 / 01期

关键词：

CORRELATION; METHANE + N-ALKANE; 2ND CRITICAL END-POINT; 3-PHASE CURVE;

D O I：

10.1007/BF01438969

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, experimental three-phase equilibrium (solid n-alkane + liquid + vapor) data for binary methane + n-alkane systems are presented. For the binary system methane + tetracosane, the three-phase curve was determined based on two phase equilibrium measurements in a composition range from x(c24) = 0.0027 to x(c24) = 1.0. The second critical endpoint of this system was found at p = (104.7 +/- 0.5) MPa, T = (322.6 +/- 0.25) K, and a mole fraction of tetracosane in the critical fluid phase of x(c24) = 0.0415 +/- 0.0015. The second critical endpoint occurs where solid tetracosane is in equilibrium with a critical fluid phase (S-c24 + L = V). For the binary systems of methane with the n-alkanes tetradecane, triacontane, tetracontane, and pentacontane, only the coordinates of the second critical endpoints were measured. The second critical endpoint temperature is found close to the atmospheric melting point temperature of the n-alkane. The pressures at the second critical endpoints do not exceed 200 MPa. Based on these experimental data and data from the literature, correlations for the pressure, temperature, and fluid phase composition at the second critical endpoint of binary methane + n-alkane systems with n-alkanes between octane and pentacontane were developed.

引用

页码：185 / 194

页数：10

共 17 条

[1]

Rowlinson J.S., Swinton F.L., Liquids and Liquid Mixtures, (1982)

[2]

Davenport A.J., Rowlinson J.S., Trans. Faraday Soc., 59, (1963)

[3]

Kohn J.P., Heterogeneous phase and volumetric behavior of the methanen-heptane system at low temperatures, AIChE Journal, 7, (1961)

[4]

Glaser M., Peters C.J., van der Kooi H.J., Lichtentaler R.N., J. Chem. Thermodyn., 17, (1985)

[5]

de Loos, van der Kooi H.J., Ott P.L., J. Chem. Eng. Data, 31, (1986)

[6]

de Loos, Wijen A.J.M., Diepen G.A.M., J. Chem. Thermodyn., 12, (1980)

[7]

Bondi A., Physical Propertiesof Molecular Crystals,Liquids and Glasses, pp. 450-453, (1968)

[8]

Kohn J.P., Bradish W.F., J. Chem. Eng. Data, 9, (1964)

[9]

Kohn J.P., Luks K.D., Liu P.H., Tiffin D.L., J. Chem. Eng. Data, 22, (1977)

[10]

Shipman L.M., Kohn J.P., J. Chem. Eng. Data, 11, (1966)

← 1 2 →