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Phase Equilibria of the CH4-CO2 Binary and the CH4-CO2-H2O Ternary Mixtures in the Presence of a CO2-Rich Liquid Phase ArchiMer
Legoix, Ludovic; Ruffine, Livio; Donval, Jean-pierre; Haeckel, Matthias.
The knowledge of the phase behavior of carbon dioxide (CO2)-rich mixtures is a key factor to understand the chemistry and migration of natural volcanic CO2 seeps in the marine environment, as well as to develop engineering processes for CO2 sequestration coupled to methane (CH4) production from gas hydrate deposits. In both cases, it is important to gain insights into the interactions of the CO2-rich phase—liquid or gas—with the aqueous medium (H2O) in the pore space below the seafloor or in the ocean. Thus, the CH4-CO2 binary and CH4-CO2-H2O ternary mixtures were investigated at relevant pressure and temperature conditions. The solubility of CH4 in liquid CO2 (vapor-liquid equilibrium) was determined in laboratory experiments and then modelled with the...
Tipo: Text Palavras-chave: Gas hydrate; CH4; CO2-rich mixtures; Phase equilibria; Soave-Redlich-Kwong (SRK) cubic equation of state (EoS).
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00414/52538/53349.pdf
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