| Titre : | Characterization of CO2 hydrate formation and dissociation kinetics in a flow loop (2011) |
| Titre original : | Caractérisation des cinétiques de formation et de dissociation des hydrates de CO2 dans une boucle de circulation |
| Auteurs : | Salem Jerbi, Auteur ; Anthony Delahaye, Auteur ; Laurence Fournaison, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | International journal of refrigeration (Vol. 33 N° 8, Décembre 2010) |
| Article en page(s) : | pp. 1625-1631 |
| Note générale : | Génie Mécanique |
| Langues : | Anglais |
| Index. décimale : | 621.5 (Energie pneumatique. Machinerie et outils. Réfrigération) |
| Tags : | Kinetics Formation Dissociation CO2 hydrate Additives Experimental loop |
| Résumé : | The objective of this work is to investigate CO2 hydrate formation and dissociation kinetics in the aim of designing a circulation loop with heat exchangers for secondary refrigeration applications. The formation of gas hydrates is a crystallization process which requires a supersaturated environment. The majority of the experimental formation data from the literature were obtained in semi-batch stirred tank. It was found that the hydrate growth for CO2 hydrate formation was approximately 1.8 × 10−3 %hydrate.s−1 for a stirring velocity about 450 rpm. The study reveals that for our system, an isothermal circulation loop, the kinetic varied from 4.3 × 10−3 to 8.3 × 10−3 %hydrate s−1, respectively for two protocols with water and water-additives selected for their dispersive and promoter properties. The first results of CO2 hydrate dissociation kinetics with or without additives were equivalent with various systems (semi-batch stirred tank reactor or loop) with approximately 5 × 10−3 %hydrate s−1. |
| DEWEY : | 621.5 |
| ISSN : | 0140-7007 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S0140700710002070 |
