Three-phase liquid-liquid-vapor equilibria in the nitrogen + methane + eta-heptane system

Journal Article · Sat Jul 01 04:00:00 EDT 1989 · Journal of Chemical and Engineering Data; (USA)

DOI:https://doi.org/10.1021/je00057a016· OSTI ID:5368335

Chen, W L; Kohn, J P ^[1]; Luks, K D ^[2]

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1. Notre Dame Univ., IN (USA). Dept. of Chemical Engineering
2. Tulsa Univ., OK (USA). Dept. of Chemical Engineering

The three-phase liquid-liquid-vapor (L/sub 1/-L/sub 2/-V) phase equilibria behavior of the ternary mixture nitrogen + methane + n-heptane is presented, with special attention directed toward identifying the boundaries of the three-phase region. This ternary system has a constituent binary mixture, methane + n-heptane, which exhibits L/sub 1/-L/sub 2/-V immiscibility. The presence of nitrogen creates a three-sided L/sub 1/-L/sub 2/-V region extending in pressure-temperature space down in temperature, over a range of 169-192 {Kappa}, from the binary L/sub 1/-L/sub 2/-V locus. The other two boundaries of the three-phase region are type {Kappa} point (L/sub 1/-L/sub 2/=V) and Q point (S-L/sub 1/-L/sub 2/-V) loci. Liquid-phase compositions and molar volumes are reported as a function of temperature and pressure within the three-phase region and along the boundaries.

• OSTI ID: 5368335
• Journal Information: Journal of Chemical and Engineering Data; (USA), Journal Name: Journal of Chemical and Engineering Data; (USA) Vol. 34:3; ISSN 0021-9568; ISSN JCEAA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKANES
CHEMICAL COMPOSITION
DISPERSIONS
ELEMENTS
EQUILIBRIUM
FLUIDS
GASES
HEPTANE
HYDROCARBONS
LIQUIDS
METHANE
MIXTURES
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
PHASE STUDIES
PRESSURE DEPENDENCE
TEMPERATURE DEPENDENCE
VAPORS