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; George, Michael W.

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.

Citation

Ke, J., Suleiman, N., Sanchez-Vicente, Y., Murphy, T. S., Rodriguez, J., Ramos, A., Poliakoff, M., & George, M. 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, 55-66. https://doi.org/10.1016/j.ijggc.2016.11.003

• Journal Article Type: Article
• Acceptance Date: Nov 3, 2016
• Online Publication Date: Nov 22, 2016
• Publication Date: 2017-01
• Deposit Date: Sep 11, 2017
• Publicly Available Date: Sep 11, 2017
• Journal: International Journal of Greenhouse Gas Control
• Print ISSN: 1750-5836
• Electronic ISSN: 1878-0148
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 56
• Pages: 55-66
• DOI: https://doi.org/10.1016/j.ijggc.2016.11.003
• Keywords: Carbon capture and storage, Carbon dioxide, Argon, Nitrogen, Hydrogen, Vapour-liquid equilibrium, Density, Equation of state
• Public URL: https://nottingham-repository.worktribe.com/output/838358
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S1750583616304686?via%3Dihub
• Additional Information: This article is maintained by: Elsevier; Article Title: The phase equilibrium and density studies of the ternary mixtures of CO2 + Ar + N2 and CO2 + Ar + H2, systems relevance to CCS technology; Journal Title: International Journal of Greenhouse Gas Control; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.ijggc.2016.11.003; Content Type: article; Copyright: © 2016 Elsevier Ltd. All rights reserved.
• Contract Date: Sep 11, 2017