Characterization of an airlift reactor with helical flow promoters

Citation
C. Schlotelburg et al., Characterization of an airlift reactor with helical flow promoters, CAN J CH EN, 77(5), 1999, pp. 804-810
Citations number
25
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemical Engineering
Journal title
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
ISSN journal
0008-4034 → ACNP
Volume
77
Issue
5
Year of publication
1999
Pages
804 - 810
Database
ISI
SICI code
0008-4034(199910)77:5<804:COAARW>2.0.ZU;2-T
Abstract
The helical flow promoter (HFP), inserted in the downcomer of an airlift re actor (ALR), generates a helical flow pattern in the circulating gas-liquid (solid) mixture. Data on the fluidization capacity, gas holdup, liquid vel ocity and mass transfer rate for two- and three-phase systems with two diff erent carboxymethylcellulose solutions collected in a 58 L ALR-HFP are pres ented and compared with those of common pneumatic reactors. Generally, an i ncreasing solid concentration led to a slight decrease in gas holdup and li quid velocity but to a considerable decrease in mass transfer rates. Insert ion of HFPs produced a significantly enhanced fluidization capacity of soli d particles compared to the common systems.