MASS-TRANSFER INTO VISCOUS PSEUDOPLASTIC LIQUID IN LARGE-DIAMETER BUBBLE-COLUMNS

Authors
EICKENBUSCH H BRUNN PO SCHUMPE A
Citation
H. Eickenbusch et al., MASS-TRANSFER INTO VISCOUS PSEUDOPLASTIC LIQUID IN LARGE-DIAMETER BUBBLE-COLUMNS, Chemical engineering and processing, 34(5), 1995, pp. 479-485
Citations number
16
Categorie Soggetti
Engineering, Chemical","Energy & Fuels
Journal title
Chemical engineering and processing → ACNP
ISSN journal
02552701
Volume
34
Issue
5
Year of publication
1995
Pages
479 - 485
Database
ISI
SICI code
0255-2701(1995)34:5<479:MIVPLI>2.0.ZU;2-Y
Abstract
In pseudoplastic aqueous solutions of polysaccharides (xanthan, hydrox ypropyl guar), hydrodynamics and oxygen mass transfer were studied in bubble columns of 0.19 m, 0.29 m and 0.60 m diameter (0.08 to 1.6 m(3) liquid volume). Churn-turbulent flow prevailed; a slight diameter eff ect on the gas hold-up was observed only at high viscosity in the smal ler columns. The volumetric mass transfer coefficients were independen t of the column diameter. The suitability of previously suggested corr elations for scale-up is analyzed.