High-pressure vapor-liquid equilibria involving mixtures of nitrogen, carbon dioxide, and eta-butane

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

DOI:https://doi.org/10.1021/je00057a011· OSTI ID:5298094

Shibata, S K ^[1]; Sandler, S I ^[2]

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1. Du Pont de Nemours (E.I.) and Co., Wilmington, DE (USA). Technical Div.
2. Delaware Univ., Newark, DE (USA). Dept. of Chemical Engineering

A new high-pressure vapor-liquid equilibrium apparatus has been constructed with the capability of measuring the compositions and densities of the coexisting equilibrium phases at constant temperature and/or pressure. This apparatus was tested with the carbon dioxide + n-butane system with excellent agreement observed between our results and previously published data. Data are also reported for the nitrogen + n-butane system and the previously unmeasured nitrogen + carbon dioxide + n-butane system. These data were modeled with the Peng-Robinson equation of state. Excellent fits were obtained for the compositions in the carbon dioxide + n-butane system, but a poor fit was obtained for the nitrogen + n-butane data. The ability of the Peng-Robinson equation of state to accurately predict the phase behavior of the ternary mixture is dependent on the fits of the binary data, and therefore the ternary data are also not fit well. In all cases the liquid densities are poorly predicted with the Peng-Robinson equation of state.

• OSTI ID: 5298094
• Journal Information: Journal of Chemical and Engineering Data; (USA), Journal Name: Journal of Chemical and Engineering Data; (USA) Vol. 34:3; ISSN JCEAA; ISSN 0021-9568
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKANES
BUTANE
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
DENSITY
DISPERSIONS
ELEMENTS
EQUATIONS
EQUATIONS OF STATE
EQUILIBRIUM
FLUIDS
GASES
HIGH PRESSURE
HYDROCARBONS
LIQUIDS
MIXTURES
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
VAPORS