Experimental influence of kinetic inhibitors on methane hydrate particle size distribution during batch crystallization in water

• Main Authors: Pic, Jean-Stéphane, Herri, Jean-Michel, Cournil, Michel
• Other Authors: Centre Sciences des Processus Industriels et Naturels (SPIN-ENSMSE), École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT), Laboratoire des Procédés en Milieux Granulaires (LPMG-EMSE), Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT)-Centre National de la Recherche Scientifique (CNRS), Département Géochimie, environnement, écoulement, réacteurs industriels et cristallisation (GENERIC-ENSMSE), Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT)-SPIN
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2001
• Subjects: methane hydrate; kinetic inhibition; crystallization; polyvinylpyrrolidone; population size distribution; [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering; Methane hydrate
• Online Access: https://hal-emse.ccsd.cnrs.fr/emse-00497198

International audience his paper reports an experimental study of methane hydrate crystallization. crystallization and dissociation cycles are performed in an isothermal and isobaric pressurised stirred reactor. Both methane gas consumption and methane hydrate particles population size distribution (PSD) (calculated from turbidimetric measurements) are recorded. The influence of pressure, stirring and two kinetic inhibitors (PVP and FXAP) is quantified. The crucial moment of the additive introduction (dissolved before or injected during crystallization) is particularly focused on. Finally, the bases of a kinetic inhibition model are raised, introducing a dead zone for crystal nucleation and growth.