| Titre : | Determination of liquid multiscale circulation structure in a bubble column by tracing the liquid flowing trajectory (2011) |
| Auteurs : | Zi-Bin Huang, Auteur ; Zhen-Min Cheng, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 50 N° 21, Novembre 2011) |
| Article en page(s) : | pp. 11843-11852 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Bubble column |
| Résumé : | To identify the liquid circulation flow structure in a bubble column, a set of multipoint tracer injection and detection device was developed for a systematic study in a bubble column of 550 cm in height and 50 cm in diameter. Tracer response profiles were measured to track the liquid flowing trajectory under various flow conditions in the column with and without draft tubes. They showed that only when the draft tube length was greater than 3 m could the tracer response exhibit obvious periodicity. To resolve the liquid circulation flow structure in the time and frequency domain, wavelet multiresolution analysis was adopted. The results showed that the liquid circulation frequency increased with superficial gas velocity, which is in agreement with the published literature. It was also found that the macroscale, mesoscale, and microscale circulation loops coexisted in the bubble column. |
| DEWEY : | 660 |
| ISSN : | 0888-5885 |
| En ligne : | http://cat.inist.fr/?aModele=afficheN&cpsidt=24697500 |
