PARTICLE-LIQUID MASS TRANSFER IN MULTIIMPELLER MECHANICALLY AGITATED CONTACTORS
- 1 January 1994
- journal article
- research article
- Published by Taylor & Francis in Chemical Engineering Communications
- Vol. 129 (1) , 109-121
- https://doi.org/10.1080/00986449408936254
Abstract
The mass transfer coefficients between solid particles and liquids in high aspect ratio contactors agitated by multiple impellers have been reported. Two vessel sizes i.e., 0.15 m and 0.30m I.D. each with a length of 1.0 m were used. The effects of particle size, liquid viscosity and agitation speed were studied using two types of impellers, i.e., disc turbine (DT) and pitched turbine downflow (PTD). The spacings between two impellers were maintained at tank diameter. A simple mass transfer correlation based on critical suspension speed is proposed.Keywords
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