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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received July 10, 2005
Accepted September 8, 2005

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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A discrete-sectional model for particle growth in aerosol reactor: Application to titania particles

Chowdhury Golam Moniruzzaman Kyun Young Park^†

Department of Chemical Engineering, Kongju National University, Gongju, Chungnam 314-701, Korea

Korean Journal of Chemical Engineering, January 2006, 23(1), 159-166(8), 10.1007/BF02705709

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Abstract

A one-dimensional discrete-sectional model has been developed to simulate particle growth in aerosol reactors. Two sets of differential equations for volume and surface area, respectively, were solved simultaneously to determine the size distributions of agglomerates and primary particles. The surface area equations were derived in such a way that the coagulation integrals calculated for the volume equations could be used for the surface area equations as well, which is new in this model. The model was applied to a production of TiO2 particles by oxidation of titanium tetrachloride. Model predictions were compared with experimental data and those of a two-dimensional sectional model. Good agreement was shown in calculated particle size distributions between the present model and the two-dimensional model, which is more rigorous but demands a large amount of computer time and memory. Compared to experimental data, the primary particle size calculated by the model was more sensitive to the variation of reactor temperature.

Keywords

Coalescence Coagulation Primary Particle and Discrete-Sectional Model

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