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Hydrate growth at the interface between water and CO2/CH4 gas mixtures: influence of pressure, temperature, gas composition and water soluble surfactants

Daniel-David, Dephine and Broseta, Daniel and Guerton, Fabrice and Torré, Jean-Philippe and Dicharry, Christophe Hydrate growth at the interface between water and CO2/CH4 gas mixtures: influence of pressure, temperature, gas composition and water soluble surfactants. (2013) In: The 7th Trondheim CCS Conference, TCCS7, 4 June 2013 - 4 June 2013 (Trondheim, Norway).

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Abstract

Two major bottlenecks must be overcome when exploiting gas hydrate formation to capture CO2 from natural or flue gases: selectivity, i.e., the CO2 content of the enclathrated gas, which should be as high as possible, and kinetics, which is the focus of this paper. Anionic surfactants such as SDS (sodium dodecyl sulfate) are known to be much more efficient at speeding up gas hydrate formation in the case of methane-rich gases than in the case of CO2-rich gases. To assess the kinetic efficiency of a given surfactant additive, a simple experimental method has been devised, in which hydrate formation is triggered at the top of a sessile water drop by contact with the hydrate phase, and the ensuing hydrate growth is visualized. Depending on the surfactant and gas type, very different gas hydrate growth mechanisms are observed.

Item Type:Conference or Workshop Item (Other)
HAL Id:hal-02005688
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Total (FRANCE)
Other partners > Université de Pau et des Pays de l'Adour - UPPA (FRANCE)
Laboratory name:
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Deposited On:04 Feb 2019 10:22

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