Kinetics of Reaction-Crystallization of Struvite in the Continuous Draft Tube Magma Type Crystallizers——Influence of Different Internal Hydrodynamics

Joanna Koralewska; Krzysztof Piotrowski; Boguslawa Wierzbowska; Andrzej Matynia

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Kinetics of Reaction-Crystallization of Struvite in the Continuous Draft Tube Magma Type Crystallizers——Influence of Different Internal Hydrodynamics

Updated：2026-01-06

- Kinetics of Reaction-Crystallization of Struvite in the Continuous Draft Tube Magma Type Crystallizers——Influence of Different Internal Hydrodynamics
- Chinese Journal of Chemical Engineering Vol. 17, Issue 2, Pages: 330-339(2009)
- Affiliations：
  
  1. Department of Chemistry, Wroclaw University of Technology,Wroclaw,Poland,50-370
  2. Department of Chemical and Process Engineering, Silesian University of Technology,Gliwice,Poland,44-101
- Author bio：
- Funds：
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- Published：2009
- Accepted：
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Joanna Koralewska, Krzysztof Piotrowski, Boguslawa Wierzbowska, Andrzej Matynia. Kinetics of Reaction-Crystallization of Struvite in the Continuous Draft Tube Magma Type Crystallizers——Influence of Different Internal Hydrodynamics[J]. , 2009, 17(2): 330-339.
DOI：

Joanna Koralewska, Krzysztof Piotrowski, Boguslawa Wierzbowska, Andrzej Matynia. Kinetics of Reaction-Crystallization of Struvite in the Continuous Draft Tube Magma Type Crystallizers——Influence of Different Internal Hydrodynamics[J]. , 2009, 17(2): 330-339. DOI：

摘要

Abstract

A laboratory-scale reaction-crystallization process of struvite synthesis from diluted water solution of Mg

and PO

ions was studied.The research covered the tests of two original constructions of continuous jet-pump Draft Tube Magma(DTM)-type crystallizers with internal circulation of suspension(upward/downward).Interactions between constructional

hydrodynamic and kinetic factors were established and discussed.Nucleation and linear growth rates of struvite crystals were calculated on the basis of population density distribution.Kinetic model of idealized Mixed Suspension Mixed Product Removal(MSMPR) crystallizer considering the size-dependent growth mechanism was applied(Rojkowski hyperbolic equation).For comparison purposes the kinetic data corresponded to a simpler

continuous draft tube-type crystallizer equipped with propeller agitator were analyzed.It was concluded that crystal product of larger size was withdrawn from the jet-pump DTM crystallizer of the descending flow of suspension in a mixing chamber.

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