Liquid‐vapor equilibria at 112.00 K for systems containing nitrogen, argon, and methane

Miller, Ruth R.; Kidnay, A.J.; Hiza, M. J.

doi:10.1002/aic.690190121

Cited by 56 publications

(10 citation statements)

References 17 publications

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“…Saturation pressures were so low for the hydrocarbon systems that Raoult's law was considered adequate for their estimation. Values for CH4-N2 were estimated from the vapor-liquid equilibrium data of Sprow and Prausnitz (1966), Cines et al (1953), andMiller et al ( 1973). Excess volumes were calculated from where the mixture molar volumes and pure fluid molar volumes (Table 2 and 4 values adjusted to the appropriate temperature) were all corrected to the mixture saturation pressure.…”

Section: Molar Volumes Are Reported Inmentioning

confidence: 99%

Experimental liquid mixture densities for testing and improving correlations for liquefied natural gas

Rodosevich

Miller

1973

AIChE Journal

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Liquid molar volumes and excess volumes have been experimentally deterhned for some methane-rich binary and ternary mixtures containing ethane, propane, isobutane, and nitrogen between 91 and 115 K. A gas expansion type system calibrated against pure methane densities was used to make the necessary pure fluid and mixture measurements.The best of the available density correlations predicts the experimental methane-ethane molar volumes within k0.2yo, while larger systematic deviations are found for the methane-propane and methane-isobutane systems. Molar volumes for methane-nitrogen and ternary mixtures containing nitrogen diverge strongly from the correlation predictions at 108 K and higher temperatures. An empirical scheme is proposed for predicting molar volumes of methane-rich liquefied natural gases using reported methaneethane and methane-nitrogen excess volumes. This method predicts all binary and ternary molar volumes from this investigation within &O.l%. JAMES B. RODOSEVICH and REID C. MILLER Deportment of Chemical EngineeringUniversity of Wyoming Laromie, Wyoming 82070 SCOPELong distance transportation of liquefied natural gas (LNG) is increasing rapidly throughout the world. With domestic gas supplies projected to lag behind demands in many countries, the LNG industry should continue to gain importance in the future energy picture. Large scale custody transfer of LNG is posing new technical problems in the gas industry. Accurate liquid mixture densities are required to convert volumetric meter readings into market values, which are based on total heating values. A systematic error in estimated density of as little as 1% may amount to very serious monetary discrepancies ($15,00O/ocean tanker load by current standards).There are only a few published high-accuracy densities for liquid hydrocarbon mixtures containing more than 70 mole yo methane (Klosek and McKinley, 1968;Shana'a and Canfield, 1968). This data has been used in conjunction with mixture data outside this composition range and pure fluid data to develop an empirical density correlation (Klosek and McKinley, 1968; Boyle and Reece, 1971).To date, this LNG density correlation has not been satisfactorily tested. Correlation accuracy is probably a strong function of gas composition and temperature; however, this has never been established by independent experimentation. Two inherent problems need clarification. First, the accuracy of the experimental LNG densities needs to be checked by independent investigation. Additional data for typical compositions should be produced in this effort. Second, the present correlation simply applies a volume reduction correction to the ideal mixture molar volume. This correction is taken to be a function of average molecular weight of the mixture and temperature only, pressure and actual composition being ignored. Such a correlation may be too simple to achieve an accuracy approaching &O.lyo in the density, even for normal LNG variations in composition. A set of experiments designed to test the limits of such a cor...

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Section: Molar Volumes Are Reported Inmentioning

confidence: 99%

Experimental liquid mixture densities for testing and improving correlations for liquefied natural gas

Rodosevich

Miller

1973

AIChE Journal

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“…We chose three binary vapour-liquid equilibria for study: (i) both components were well below their critical temperature (T c ) (argon-methane at 122.89 K and argon-nitrogen at 112 K); (ii) one component is close to its critical temperature and the other is well below T c (argon-krypton at 148 K) and (iii) one fluid is above T c and the other is well below T c (argon-krypton at 177 K). Experimental data are available in the literature for these binary mixtures at these temperatures in references: Jin et al (1993), Miller et al (1973) and Schouten et al, (1975) respectively. To avoid lengthening the paper unnecessarily, we present briefly the results for the first system in the Appendix and the last two systems in detail, since if the new methodology works for these systems, it follows that it will work for systems under subcritical conditions.…”

Section: Vapour-liquid Equilibria Of Binary Mixtures Of Simple Gasesmentioning

confidence: 99%

“…(Miller et al, 1973): experimental data (solid lines); Gibbs (circles); kMC (triangles) and Bin-MC (squares).…”

Section: Liquid Mole Fraction Of Kryptonmentioning

confidence: 99%

Development of kinetic Monte Carlo and Bin-Monte Carlo schemes for simulation of mixtures – vapor–liquid equilibria & adsorption

Nguyen

Fan

Razak

et al. 2013

Chemical Engineering Science

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“…Parameters a CN , a CE , and a E can be obtained from experimental data of binary G E ij available from the literature [19][20][21] by fitting eq. 7 to the experiments.…”

Section: Composition Of Lakes On Titan's Surfacementioning

confidence: 99%

“…A is the surface area of Titan (Table 1) Since the total mole number of N 2 , n tot N 2 , is given by (18) the sum of mole numbers of CH 4 and N 2 in the liquid phase is With x CH 4 = n l CH 4 /(n l CH 4 + n l N 2 ) eq. 17 can now be rewritten as (19) x -CH 4 in eq. 19 depends on time through x CH 4 , the mole fraction of CH 4 in the liquid phase, all other para meters p sat CH 4 , p sat N 2 , M N 2 , M CH 4 , g and in particular n tot N 2 are constant, i.e., they do not depend on time provided the temperature is also independent of time.…”

Section: Approximative Scenario Of Titan's Atmosphere In the Past Andmentioning

confidence: 99%

Thermodynamics in an icy world: The atmosphere and internal structure of Saturn's moon Titan

Heintz

Bich

2009

Pure and Applied Chemistry

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Thermodynamic principles can be applied for describing the atmospheres and the internal structure of celestial bodies using Saturn's moon Titan as a most appropriate example.Some basic physical data of Titan such as the measured temperature and pressure on its surface, the atmospheric composition, Titan's density and diameter, and other information allow us to predict further properties which have not been determined directly by measurements. The existence of a liquid phase covering smaller parts of the surface can be confirmed, and the composition of the liquid can be predicted. The change of temperature with the height over the surface and the appearance of clouds and rainfall in the atmosphere consisting essentially of CH 4 + N 2 mixtures can also be predicted. By developing a new method of calculation of atmospheric scenarios, the chemical history of Titan's surface and atmosphere can be roughly reconstructed taking into account the known rate of methane destruction caused by radiative absorption of sunlight. Finally, some estimations concerning the material structure and the pressure behavior of Titan's interior can be made. Only basic knowledge of thermodynamics and physics is required to understand essential features in a strange world that is more than one billion kilometers away from us.

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Liquid‐vapor equilibria at 112.00 K for systems containing nitrogen, argon, and methane

Abstract: Liquid-vapor phase equilibria measurements were made at 112.00 K on the binary systems nitrogen-argon, nitrogen-methane, and argon-methane and the ternary system nitrogen-argon-methane. Values of gE, the excess was selected since all of these simple components are of

Cited by 56 publications

References 17 publications

Experimental liquid mixture densities for testing and improving correlations for liquefied natural gas

Experimental liquid mixture densities for testing and improving correlations for liquefied natural gas

Development of kinetic Monte Carlo and Bin-Monte Carlo schemes for simulation of mixtures – vapor–liquid equilibria & adsorption

Thermodynamics in an icy world: The atmosphere and internal structure of Saturn's moon Titan

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