THREE-PHASE FLUIDIZED BEDS WITH VISCOUS LIQUID: HYDRODYNAMICS AND MASS TRANSFER

Hydrodynamics and gas/fiquid mass transfer in fluidized beds of glass spheres (3-8 mm diameter)were studied employing viscous aqueous solutions (16-53 mPas) Increasing liquid viscosity reduced the bubble disintegration capability of the particle beds. The most pronounced consequence was a strong dec...

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Veröffentlicht in:	Chemical engineering communications 1986-02, Vol.40 (1-6), p.49-65
Hauptverfasser:	PATWARI, A.N., NGUYEN-TIEN, K., SCHUMPE, A., DECKWER, W.-D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Chemical engineering Effective shear rate Exact sciences and technology Fluidization Hold-up Mass transfer Three-phase fluidization Viscosity
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Beschreibung
Zusammenfassung:	Hydrodynamics and gas/fiquid mass transfer in fluidized beds of glass spheres (3-8 mm diameter)were studied employing viscous aqueous solutions (16-53 mPas) Increasing liquid viscosity reduced the bubble disintegration capability of the particle beds. The most pronounced consequence was a strong decrease in the volumetric mass transfer coefficients (k L a) From a comparison of k L a in Newtonian and pseudoplastic liquids it is concluded that the effective shear rates in three-phase fluidized beds are higher than in bubble columns.
ISSN:	0098-6445 1563-5201
DOI:	10.1080/00986448608911690