Gas hold-up in stirred tank reactors

✍ Scribed by Archis A. Yawalkar; Vishwas G. Pangarkar; Anthony A. C. M. Beenackers

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 813 KB
• Volume: 80
• Category: Article
• ISSN: 0008-4034
• DOI: 10.1002/cjce.5450800117

✦ Synopsis

Abstract

Based on a study of the gas hold‐up data for stirred tank reactor generated in the present work and the data available in the literature for large stirred tank reactors (T = 0.57 m to 2.7 m) equipped with disc turbines and pitched blade downflow turbines a correlation is presented which reliably predicts gas hold‐up data over wide range of system configurations and operating parameters. The parameter used, N/N~cd~, relates gas hold‐up at impeller speed N with respect to the gas hold‐up at minimum impeller speed for complete dispersion of the gas, N~cd~. It is shown that the gas hold‐up data of different workers when compared on the basis of N/N~cd~, shows unanimity.