Hydrodynamic study of a trickle-bed reactor by means of microelectrodes: analysis of the probability densities

✍ Scribed by M.A. Latifi; S. Rode; N. Midoux; A. Storck

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 403 KB
• Volume: 47
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(92)87056-v

✦ Synopsis

The technique of microelectrodes in a non-conducting wall was used to determine the flow regimes in a trickle-bed reactor and to characterize the wall wetting by the analysis of the Probability Density Functions (PDF). The identification of flow regime transitions (trickling/pulsing, trickling/dispersed and dispersed/pulsing) and the study of the wall wetting are carried out respectively by the analysis of the variations of the fluctuation rate of the local liquid/solid mass transfer coefficient and the wetting rate as functions of the gas and liquid flow rates. l.INTRODUCTION In packed bed reactors with downward cocurrent gas/liquid flow, different flow regimes are observed depending on the superficial mass velocities, fluid properties and bed characteristics.