Comparison of gas hold-up in impeller agitated water and high viscosity liquids

Citation
As. Khare et K. Niranjan, Comparison of gas hold-up in impeller agitated water and high viscosity liquids, J CHEM EN J, 33(5), 2000, pp. 815-817
Citations number
8
Categorie Soggetti
Chemical Engineering
Journal title
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
ISSN journal
00219592 → ACNP
Volume
33
Issue
5
Year of publication
2000
Pages
815 - 817
Database
ISI
SICI code
0021-9592(200010)33:5<815:COGHII>2.0.ZU;2-#
Abstract
Gas hold-up in water and Castor oil, which were agitated separately by four disc type impellers, is compared on the basis of equal specific power diss ipation (P-G/V). It is noted that unlike in water, gas hold-up in Castor oi l is time dependent, and also strongly influenced by impeller design. Furth er, the gas hold-up values in Castor oil are generally higher than those ob served in water, and unlike in water, decrease with increasing (P-G/V). The se observations, which appear anomalous in the context of some earlier publ ications, are explained by considering the hold-up in Castor oil in terms o f contributions from large and tiny bubbles.