The effects of micromixing and the manner of reactor feeding on precipitation in stirred tank reactors

The effect of micromixing on the course of a precipitation process involving instantaneous irreversible chemical reaction (of the type: A + B → C) between two ionic solutions snd subsequent crystallization of the product is considered. It is demonstrated that the micromixing intensity and the manner...

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Bibliographic Details
Published in:Chemical engineering science 1988, Vol.43 (8), p.1949-1954
Main Authors: Pohorecki, R., Bałdyga, J.
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Crystal growth
crystal nucleation
crystal size distribution
Crystallization, leaching, miscellaneous separations
Exact sciences and technology
micromixing
precipitation
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Summary:The effect of micromixing on the course of a precipitation process involving instantaneous irreversible chemical reaction (of the type: A + B → C) between two ionic solutions snd subsequent crystallization of the product is considered. It is demonstrated that the micromixing intensity and the manner of reactor feeding (batch or continuous, premixed or unpremixed feed system) are major factors affecting the precipitation process and the resulting size distribution of precipitated particles. The method of prediction of these effects is based on a micromixing model, which is related to the theory of turbulent mixing in an isotropic, homogeneous turbulent field.
ISSN:0009-2509
1873-4405
DOI:10.1016/0009-2509(88)87067-2