The phase equilibrium and density studies of the ternary mixtures of CO2 + Ar + N2 and CO2 + Ar + H2, systems relevance to CCS technology

Ke, Jie, Suleiman, Norhidayah, Sanchez-Vicente, Yolanda, Murphy, Thomas S., Rodriguez, Javier, Ramos, Alfredo, Poliakoff, Martyn and George, Michael W. (2017) The phase equilibrium and density studies of the ternary mixtures of CO2 + Ar + N2 and CO2 + Ar + H2, systems relevance to CCS technology. International Journal of Greenhouse Gas Control, 56 . pp. 55-66. ISSN 1750-5836

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Abstract

The p-T phase diagrams of two ternary systems (CO2 + Ar + N2 and CO2 + Ar + H2) have been measured at temperatures between 268 and 303 K using a fibre-optic phase equilibrium analyser. CO2, which is the major component, has a mole fraction ranging from 0.90 to 0.98 in both systems. The molar ratio of the two minor components is Ar:N2 = 1:1 and Ar:H2 = 2:3, respectively for the two ternary systems. In addition, the density of a ternary mixture with xAr = 0.050 and xN2 = 0.050 is reported at 293.15 K, 303.15 K, 313.15 and 333.15 K and pressures up to 23 MPa. The new experimental phase equilibrium and density data have also been used to evaluate the GERG-2008/EOS-CG, gSAFT and Peng-Robinson equations of state. Among these equations, EOS-CG exhibits the best predictions on both the p-T phase diagrams and densities of CO2 + Ar + N2; and gSAFT gives the lowest average absolute deviation between the predicted and the measured bubble-point pressures of CO2 + Ar + H2.

Item Type: Article
RIS ID: https://nottingham-repository.worktribe.com/output/838358
Keywords: Carbon capture and storage, Carbon dioxide, Argon, Nitrogen, Hydrogen, Vapour-liquid equilibrium, Density, Equation of state
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Chemistry
Identification Number: https://doi.org/10.1016/j.ijggc.2016.11.003
Depositing User: Smith, Ruth
Date Deposited: 11 Sep 2017 14:24
Last Modified: 04 May 2020 18:29
URI: https://eprints.nottingham.ac.uk/id/eprint/45705

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