| Titre : | Heat-transfer performance of a liquid-liquid microdispersed system (2009) |
| Auteurs : | Kai Wang, Auteur ; Yangcheng Lu, Auteur ; Huawei Shao, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 47 N° 23, Décembre 2008) |
| Article en page(s) : | p. 9754–9758 |
| Note générale : | Chemistry engineering |
| Langues : | Anglais |
| Tags : | Performance Liquid-liquid Microdispersed system |
| Résumé : | In this work, the heat-transfer performance of liquid−liquid microdispersed systems was tested for the first time with a microdispersion contactor named a membrane dispersion minicontactor and octane/water as the working system. The volumetric heat-transfer coefficients ranging from 5 to 25 MW/(m3·°C) were obtained, which were 15−20 times higher than that of the conventional dispersion heat-transfer methods. The heat-transfer Murphree efficiencies, defined to evaluate the heat-transfer performance, reached 85−99% for the microdispersed system with residence times less than 0.1 s. By introducing the two parameters of Ca number and oil volumetric fraction, a semiempirical model for predicting the volumetric heat-transfer coefficient has been developed, which fits the experimental results very well. Furthermore, the similarity between the heat and mass transfer in the microdispersed system was demonstrated. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie8005484 |
