Viscosity, density, interfacial tension and compositional data for near critical mixtures of methane+butane and methane+decane systems at 310.95K

Gozalpour, Fathollah; Danesh, Ali; Todd, Adrian Christopher; Tohidi, Bahman

doi:10.1016/j.fluid.2005.03.032

Cited by 26 publications

(21 citation statements)

References 12 publications

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“…For example, IFT controls the efficiency of heat and mass transfer operations since it is one of the properties that affects the absorption of gas into liquid . Despite its importance, measured IFT values have been reported only for a limited number of n -alkane mixtures in the literature, including methane/propane, , methane/butane, methane/pentane, methane/hexane, , methane/heptane, ,, methane/octane, methane/decane, ,,, ethane/ n -pentane, ethane/hexane, butane/decane, methane/propane/ n -decane, and methane/ethane/ n -pentane …”

Section: Introductionmentioning

confidence: 99%

Effects of Temperature and Pressure on Interfacial Tensions of Fluid Mixtures. II. Propane/n-Pentane and Propane/n-Hexane Binaries

et al. 2021

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We use the experimental setup and protocols described in Toutouni et al. (Effects of Temperature and Pressure on Interfacial Tensions of Fluid Mixtures. I. CO2/n-Pentane Binary. J. Chem. Eng. Data, 2021, DOI 10.1021/acs.jced.0c01044) to examine the impacts of temperature and pressure on interfacial tensions (IFT) of binary hydrocarbon systems propane/n-pentane and propane/n-hexane. The pressure and temperature vary from 0.2 to 3.5 MPa and 323.15 to 403.15 K for the propane/n-pentane fluid system and from 0.18 to 3.5 MPa and 296.15 to 403.15 K for the propane/n-hexane fluid system. The results indicate that the IFT values of both fluid systems follow the same trends with changes in pressure and temperature. It is observed that when pressure increases isothermally, the IFT values decrease. Furthermore, when increasing temperature isobarically, the IFT values exhibit a decreasing trend at low pressures, but the trend reverses at higher pressures. The measured data also reveal that, at a given pressure and temperature, the IFT value of the propane/n-pentane system is lower than that of the propane/n-hexane system. The difference between the two IFT values decreases as pressure increases isothermally.

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Section: Introductionmentioning

confidence: 99%

Effects of Temperature and Pressure on Interfacial Tensions of Fluid Mixtures. II. Propane/n-Pentane and Propane/n-Hexane Binaries

et al. 2021

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“…Despite the importance of asymmetric mixtures, few data are available for the viscosity and density of representative mixtures. The situation is illustrated in Table where we list the available literature data for the viscosity of mixtures of alkanes with either methane − or carbon dioxide. ,,− The system methane + decane is something of an exception with experimental results reported by Lee and Eakin, Knapstad et al, Dauge et al, Canet et al, Audonnet and Padua, Gozalpour et al, Peleties, and Daridon et al Few data are found for asymmetric mixtures of either methane or carbon dioxide with other hydrocarbons. The open literature also includes little experimental data for the viscosity of mixtures of carbon dioxide with crude oils; Table lists the data sources identified by the authors. − …”

Section: Introductionmentioning

confidence: 99%

Viscosities and Densities of Binary Mixtures of Hexadecane with Dissolved Methane or Carbon Dioxide at Temperatures from (298 to 473) K and at Pressures up to 120 MPa

2016

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We report measurements of the viscosity and density of two binary mixtures comprising hexadecane with dissolved carbon dioxide or methane over the temperature range from (298.15 to 473.15) K and at pressures up to 120 MPa. The measurements were conducted at various mole fractions x of the light component as follows: x = (0, 0.0690, 0.5877 and 0.7270) for xCO2 + (1 -x)C16H34 and x = (0, 0.1013, 0.2021, 0.2976 and 0.3979) for xCH4 + (1 -x)C16H34. The viscosity and density measurements were carried out simultaneously using a bespoke vibrating-wire apparatus with a suspended sinker. With respect to the first mixture, the apparatus was operated in a relative mode and was calibrated in octane whereas, for the second mixture, the apparatus was operated in an absolute mode. To facilitate this mode of operation, the diameter of the centreless-ground tungsten wire was measured with a laser micrometer, and the mass and volume of the sinker were measured independently by hydrostatic weighing. In either mode of operation, the expanded relative uncertainties at 95 % confidence were 2 % for viscosity and 0.3 % for density. The results were correlated using simple relations that express both density and viscosity as functions of temperature and pressure. For both pure hexadecane and each individual mixture, the results have been correlated using the modified Tait equation for density, and the Tait-Andrade equation for viscosity; both correlations described our data almost to within their estimated uncertainties.In an attempt to model the viscosity of the binary mixtures as a function of temperature, density and composition, we have applied the extended-hard-sphere model using several mixing rules for the characteristic molar core volume. The most favourable mixing rule was found to be one based on a mole-fraction-weighted sum of the pure component molar core volumes raised to a power γ which was treated as an adjustable parameter. In this case, deviations of the experimental viscosities from the model were within ±25 %.

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“…The aim of the measurements of Gozalpour et al [90] was to investigate the near-critical region. All measurements, which are stated to be in the homogeneous region, are actually located in the vapor-liquid equilibrium state according to the GERG-2008 [53].…”

Section: Statistical Evaluationmentioning

confidence: 99%

“…To clarify the situation, a more detailed analysis and refit of the thermodynamic mixture model is required. The phase equilibrium measurements Gozalpour et al [90] for the CO AARD / % ECS [18] sScale [51] sScale [52] FT [38] y=methane Davani et al AARD / % ECS [18] sScale [51] sScale [52] FT [38] y=propane Abe et al AARD / % ECS [18] sScale [51] sScale [52] FT [38] 20 (18) 310-404 Only liquid-phase viscosity data are considered because vapor data were not measured but calcuated model for calculating thermodynamic properties [69], in particular for liquefied natural gas mixtures, showed that trace elements can certainly have a significant impact depending on the location in the fluid state region. On the other hand, measurements become more challenging with increasing asymmetry of the binary system.…”

Section: Statistical Evaluationmentioning

confidence: 99%

Dynamic Viscosity of Binary Fluid Mixtures: A Review Focusing on Asymmetric Mixtures

Thol

Richter

2021

Int J Thermophys

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A literature review on experimental data for binary mixtures of methane and carbon dioxide with hydrocarbons up to n-hexadecane is presented. Based on these data, the extended corresponding states method, two entropy scaling approaches, and the friction theory are analyzed with respect to their capability of calculating viscosity values with increasing asymmetry of the binary mixture. It is shown that not only the viscosity model but also the underlying thermodynamic equation of state has a significant influence on the result of such calculations. Shortcomings are identified both in the experimental data and in the modeling approaches.

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Viscosity, density, interfacial tension and compositional data for near critical mixtures of methane+butane and methane+decane systems at 310.95K

Cited by 26 publications

References 12 publications

Effects of Temperature and Pressure on Interfacial Tensions of Fluid Mixtures. II. Propane/n-Pentane and Propane/n-Hexane Binaries

Effects of Temperature and Pressure on Interfacial Tensions of Fluid Mixtures. II. Propane/n-Pentane and Propane/n-Hexane Binaries

Viscosities and Densities of Binary Mixtures of Hexadecane with Dissolved Methane or Carbon Dioxide at Temperatures from (298 to 473) K and at Pressures up to 120 MPa

Dynamic Viscosity of Binary Fluid Mixtures: A Review Focusing on Asymmetric Mixtures

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