Asymptotic modelling of crystallisation in two-layer systems. Application to methane hydrate crystallization

Michel Cournil (1, 2, 3) , Jean-Michel Herri (1, 2, 3)

1 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels
2 LPMG-EMSE - Laboratoire des Procédés en Milieux Granulaires
3 GENERIC-ENSMSE - Département Géochimie, environnement, écoulement, réacteurs industriels et cristallisation

The problem of gas-liquid crystallization is re-visited in the framework of a two-film model. The moments of the crystal size distribution can be derived from a differential equation system. Instead of a numerical solution, we present here a general procedure to express analytically the asymptotic behaviour of the physical system. Thanks to this formulation, influence of different parameters can be easily identified and validated on experimental data which mainly concern methane hydrate crystallization.

Mots clés: methane hydrate crystallization; gas-liquid crystallization; two-layer systems; two-film model; differential equation system; crystal size distribution; stirring rate

Domaines: Génie des procédés

Michel Cournil, Jean-Michel Herri. Asymptotic modelling of crystallisation in two-layer systems. Application to methane hydrate crystallization. 15th International Symposium on Industrial Crystallization, Sep 2002, Sorrento, Italy. Non paginé. ⟨hal-00625647⟩