Rheological characterisation and modelling of hydrate slurries during cristallization under laminar flowing

Abstract : An original experimental set-up was developed and used for studying crystallization and rheology of methane hydrate/water/dodecane system under laminar flowing. Dynamic viscosity and conversion of water and gas into gas hydrate crystals were measured during the process for various water contents. Experimental results were explained by means of a model including nucleation, growth and agglomeration. Due to the high value of crystal and drop concentrations, agglomeration takes place through three-bodies collisions between one water drop and two already formed agglomerates. Resulting agglomerates were considered as fractal-like ones. During crystallization and agglomeration, the effective volume fraction of drops and porous agglomerates is increased, then suspension viscosity increases. When all water drops are crystallized, agglomeration stops and viscosity do not change.
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Poster
Fifth International Conference on Gas Hydrates (ICGH 5), Jun 2005, Trondheim, Norway. 2005
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https://hal-emse.ccsd.cnrs.fr/emse-00613099
Contributeur : Andrée-Aimée Toucas <>
Soumis le : mardi 2 août 2011 - 16:38:30
Dernière modification le : jeudi 11 janvier 2018 - 06:21:23

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  • HAL Id : emse-00613099, version 1

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Annie Fidel-Dufour, Frédéric Gruy, Jean-Michel Herri. Rheological characterisation and modelling of hydrate slurries during cristallization under laminar flowing. Fifth International Conference on Gas Hydrates (ICGH 5), Jun 2005, Trondheim, Norway. 2005. 〈emse-00613099〉

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