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Experimental Study of Mixed Gas Hydrates from Gas Feed Containing CH4, CO2 and N2: Phase Equilibrium in the Presence of Excess Water and Gas Exchange ArchiMer
Legoix, Ludovic; Ruffine, Livio; Deusner, Christian; Haeckel, Matthias.
This article presents gas hydrate experimental measurements for mixtures containing methane (CH 4 ), carbon dioxide (CO 2 ) and nitrogen (N 2 ) with the aim to better understand the impact of water (H 2 O) on the phase equilibrium. Some of these phase equilibrium experiments were carried out with a very high water-to-gas ratio that shifts the gas hydrate dissociation points to higher pressures. This is due to the significantly different solubilities of the different guest molecules in liquid H 2 O. A second experiment focused on CH 4 -CO 2 exchange between the hydrate and the vapor phases at moderate pressures. The results show a high retention of CO 2 in the gas hydrate phase with small pressure variations within the first hours. However, for our system...
Tipo: Text Palavras-chave: Gas hydrates; CH4; CO2; N-2; High-pressure experiments; Phase equilibrium; Gas exchange.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00452/56345/57935.pdf
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