Thermodynamics of the carbon dioxide plus argon (CO2 + Ar) system: An improved reference mixture model and measurements of vapor-liquid, vapor-solid, liquid-solid and vapor-liquid-solid phase equilibrium data at the temperatures 213–299 K and pressures up to 16 MPa

Løvseth, Sigurd Weidemann; Austegard, Anders; Westman, Snorre Foss; Stang, H.G. Jacob; Herrig, Stefan; Neumann, Tobias

doi:10.1016/j.fluid.2018.02.009

Cited by 18 publications

(21 citation statements)

References 69 publications

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“…In the integral method, the equation of fugacity is used directly for equilibrium calculations. Therefore, for the equilibrium of two phases of vapor and liquid, the equation of fugacity is used based on the following Equation (6) [18,19]:…”

Section: An Integral Methods For the Calculations Of Vapor-liquid Equimentioning

confidence: 99%

Thermodynamic Modeling the Solubility of CO2 in Aqua System of Methyldiethanolamine and 2-(2-Aminoethylamino)ethanol Using the Nonelectrolyte Wilson Nonrandom Factor

Abdolmajidi

Marjani

Cheraghi

et al. 2020

IJE

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Section: An Integral Methods For the Calculations Of Vapor-liquid Equimentioning

confidence: 99%

Thermodynamic Modeling the Solubility of CO2 in Aqua System of Methyldiethanolamine and 2-(2-Aminoethylamino)ethanol Using the Nonelectrolyte Wilson Nonrandom Factor

Abdolmajidi

Marjani

Cheraghi

et al. 2020

IJE

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“…Phase equilibria was recently measured for 7 different temperatures on the CO2+Ar system from -60 to 26 °C, providing a fairly good coverage of the VLE properties of this system [12]. The new data provided by the CO2Mix facility enabled a significant improvement of the existing reference models.…”

Section: Phase Equilibrium Measurements On the Co2 + Ar Systemmentioning

confidence: 99%

“…Such large inaccuracies may lead to expensive overdesign or, worse, negative surprises and this example illustrate that property data always should be verified by independent measurements. In comparison, the new binary Helmholtz reference EOS model developed by Ruhr-Universität Bochum in reference [12] has much higher confidence as it is built on verified data sources.…”

Section: Phase Equilibrium Measurements On the Co2 + Ar Systemmentioning

confidence: 99%

“…Highly accurate phase equilibrium measurements of the binary mixtures CO2 + N2 [9], CO2 + O2 [10], CO2 + CH4 [11], CO2 + Ar [12], and CO2 + CO [13] have been important results of this work so far., using a facility specifically designed for accurate phase equilibrium measurements for CCS called CO2Mix [14]. In total, more than 23 isotherms have been measured with this setup, ranging in temperature from -60 to 30 °C and up to 182 bar in pressure, mostly in areas without data or with data in need of verification.…”

Section: Introductionmentioning

confidence: 97%

“…Phase equilibria of the CO2 + Ar system at -60 °C. Data and models are further described in reference[12].…”

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confidence: 99%

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Need and Measurements of Accurate Thermodynamic Data for CCS

et al. 2019

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For more efficient, robust and inexpensive CCS systems, improvements of the models describing the behavior of fluids involved in CCS are required. Accurate models in turn require experimental data of high quality, which are still lacking for many important properties when impurities are present. SINTEF Energy Research and the Norwegian CCS Research Centre (NCCS) are addressing the lack of phase equilibrium data in CCS by performing accurate measurements of important systems using a purpose-built setup. So far, the binary mixtures of CO2 + N2, CO2 + O2, CO2 + CH4, CO2 + Ar, and CO2 + CO have been investigated. In the present paper, some examples from the measurements on CO2 + Ar and CO2 + CO systems are provided, illustrating that trusting models could lead to serious consequences if they are not supported by independently verified data.

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Effects of non‐condensable CCUS impurities (CH₄, O₂, Ar and N₂) on the saturation properties (bubble points) of CO₂‐rich binary systems at low temperatures (228.15–273.15 K)

Okoro,

Chapoy,

Ahmadi

et al. 2023

Greenhouse Gases

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The present work investigated the effects of some non‐condensable impurities (i.e., N2, O2, CH4, and Ar) on the phase behaviour of CO2‐rich systems at low temperature conditions (228.15–273.15 K). The study focused on bubble point measurements of CO2‐rich systems using the isothermal (pressure–volume) method at different mole fractions of CO2 (99.5%–95%). The obtained experimental data were used to validate multi‐fluid Helmholtz energy approximation (MFHEA) and Peng–Robinson (PR) equations of state (EoSs). For all data points, the measurements’ uncertainties for temperature and pressure were 0.14 K and 0.03 MPa, respectively. While the composition uncertainty of the CO2 systems was a maximum of 0.024%. The findings reveal that as the mole fractions of the impurities increased, the bubble point pressures of the binary mixtures were elevated. Among all the investigated impurities, N2 has the most significant effect on the bubble point pressures of CO2 binary mixture at all the isotherms and compositions. Both MFHEA and PR models agreed well with the measured equilibrium points. For all systems, the average absolute deviations of the measured experimental data against the MFHEA and PR EoSs, were found to be less than 3.4% and 2.2%, respectively. Although the MFHEA EoS overpredicted most of the data points, the overall trend agreed with the experimental data and was consistent with the data available in the literature. The findings imply that the presence of these non‐condensable impurities (even as low as 0.5% mole fraction) increases the risk of two‐phase flow at higher pressures in a CO2‐rich system. © 2023 The Authors. Greenhouse Gases: Science and Technology published by Society of Chemical Industry and John Wiley & Sons Ltd.

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Thermodynamics of the carbon dioxide plus argon (CO2 + Ar) system: An improved reference mixture model and measurements of vapor-liquid, vapor-solid, liquid-solid and vapor-liquid-solid phase equilibrium data at the temperatures 213–299 K and pressures up to 16 MPa

Cited by 18 publications

References 69 publications

Thermodynamic Modeling the Solubility of CO2 in Aqua System of Methyldiethanolamine and 2-(2-Aminoethylamino)ethanol Using the Nonelectrolyte Wilson Nonrandom Factor

Thermodynamic Modeling the Solubility of CO2 in Aqua System of Methyldiethanolamine and 2-(2-Aminoethylamino)ethanol Using the Nonelectrolyte Wilson Nonrandom Factor

Need and Measurements of Accurate Thermodynamic Data for CCS

Effects of non‐condensable CCUS impurities (CH₄, O₂, Ar and N₂) on the saturation properties (bubble points) of CO₂‐rich binary systems at low temperatures (228.15–273.15 K)

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Thermodynamics of the carbon dioxide plus argon (CO2 + Ar) system: An improved reference mixture model and measurements of vapor-liquid, vapor-solid, liquid-solid and vapor-liquid-solid phase equilibrium data at the temperatures 213–299 K and pressures up to 16 MPa

Cited by 18 publications

References 69 publications

Thermodynamic Modeling the Solubility of CO2 in Aqua System of Methyldiethanolamine and 2-(2-Aminoethylamino)ethanol Using the Nonelectrolyte Wilson Nonrandom Factor

Thermodynamic Modeling the Solubility of CO2 in Aqua System of Methyldiethanolamine and 2-(2-Aminoethylamino)ethanol Using the Nonelectrolyte Wilson Nonrandom Factor

Need and Measurements of Accurate Thermodynamic Data for CCS

Effects of non‐condensable CCUS impurities (CH4, O2, Ar and N2) on the saturation properties (bubble points) of CO2‐rich binary systems at low temperatures (228.15–273.15 K)

Contact Info

Product

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Effects of non‐condensable CCUS impurities (CH₄, O₂, Ar and N₂) on the saturation properties (bubble points) of CO₂‐rich binary systems at low temperatures (228.15–273.15 K)