Chord length distributions interpretation using a polydispersed population: Modeling and experiments

Ana Cameirão (1, 2, 3) , Hung Le Ba (1, 2, 4) , Myriam Darbouret (5) , Jean-Michel Herri (1, 2, 3) , Jean-Louis Peytavy (6) , Philippe Glénat (6)

1 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels
2 LPMG-EMSE - Laboratoire des Procédés en Milieux Granulaires
3 PROPICE-ENSMSE - Département PROcédés Poudres, Interfaces, Cristallisation et Ecoulements
4 GENERIC-ENSMSE - Département Géochimie, environnement, écoulement, réacteurs industriels et cristallisation
5 IFPEN - IFP Energies nouvelles
6 CSTJF - Centre scientifique et Technique Jean Feger

Chord length distributions were measured during the crystallization of gas hydrates in a flow loop. The conditions on the flow loop were similar with the conditions in the marine pipelines. The flow loop was filled with water in oil emulsion and pressurized with methane (7 MPa) at low temperature (277 K). During crystallization water droplets crystallize and agglomerate. The CLD measures were interpreted in a preceding work [Le Ba et al., 2010] [1] by constructing random aggregates with known geometrical proprieties from a monodispersed population of droplets and calculating their CLD. Comparing calculated CLD with CLD from the experiment, the geometrical parameters: number of primary particles and fractal dimension of experimental aggregates are identified. However some differences remained between the experiment and the calculated CLD. In the present work the droplets population was considered polydispersed improving the comparison between the model and the experiment.

Mots clés: Crystallization; Agglomeration; Chord length distribution; Crystallization from a Water in oil emulsion; Modeling

Domaines: Génie des procédés

Ana Cameirão, Hung Le Ba, Myriam Darbouret, Jean-Michel Herri, Jean-Louis Peytavy, et al.. Chord length distributions interpretation using a polydispersed population: Modeling and experiments. Journal of Crystal Growth, 2012, 342 (1), pp.65-71. ⟨10.1016/j.jcrysgro.2011.05.028⟩. ⟨hal-00679217⟩