Gas dispersion in agitated tanks

✍ Scribed by J. Rennie; F.H.H. Valentin

• Publisher: Elsevier Science
• Year: 1968
• Tongue: English
• Weight: 171 KB
• Volume: 23
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(68)89014-1

✦ Synopsis

GAS-LIQUID mass transfer in. stirred tanks depends not only on the total-surface area of the gas bubbles, but also on the 'effectiveness' of this area This note reports the results of a photographic study designated to investigate the latter factor. The generation of small bubbks from large bubbles in the tmbuknt regionsIaround an impelkr is an extremely fast process; also, many of the bubbles formed are very small; Thus high speed cinC and still photography must be used to study these phenomena EXPERIMENTAL

Still photography

A Sinar 5.~4 camera was used with llford HP3 film, as well as Polaroid type 47 film for setting up. Lighting was either continuous or flash (Ernest Turner model 2OOJ,5 w).