Modeling and Estimation of the Kinetics of Seeded Solvent-mediated Phase Transformation in a Batch Crystallizer

Modeling the kinetics of the preparing process is necessary to produce a product with the appropriate particle properties and minimum production cost.Owing to the lackness of crystal size distributor （CSD） information,however,solvent-mediated phase transformation encounters difficulty in modeling th...

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Bibliographic Details
Published in:Journal of Wuhan University of Technology. Materials science edition 2011-10, Vol.26 (5), p.872-878
Main Authors: Tang, Mingliang, Shen, Xiaodong, Shi, Jiajun
Format: Article
Language:English
Subjects:
CaSO4
Chemistry and Materials Science
Crystallizers
Crystals
Manufacturing engineering
Materials Science
Mathematical models
Phase transformations
Regression
Transformations
介导
估计
动力学建模
溶剂
相变
种子
结晶器
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Summary:Modeling the kinetics of the preparing process is necessary to produce a product with the appropriate particle properties and minimum production cost.Owing to the lackness of crystal size distributor （CSD） information,however,solvent-mediated phase transformation encounters difficulty in modeling the kinetics as compared to solution crystallization.Consequently,a model was established by making the product CSD to move along by horizontal translation to obtain the CSDs of the stable phase in the process of transformation.Then the moment method was used to solve the popular balance equation,and the least square nonlinear regression method was applied to estimate the kinetics parameters.The model has been successfully used to simulate the transformation of CaSO4？2H2O to α-CaSO4？1/2H2O in an isothermal seeded batch crystallizer with different stirring speeds,and it is beneficial to producing high performance α-CaSO4？1/2H2O crystals which have the right particle characteristics.
ISSN:1000-2413
1993-0437
DOI:10.1007/s11595-011-0328-8