Modelling of flocculation using a population balance equation

被引：21
作者：
Coufort, Carole
Bouyer, Denis
Line, Alain
Haut, Benoit
机构：
[1] INSA, Lab Ingn Procedes Environm, F-31077 Toulouse, France
[2] Free Univ Brussels, Serv Gene Chim, B-1050 Brussels, Belgium
来源：
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 2007年 / 46卷 / 12期
关键词：
flocculation; hydrodynamics; population balance equation; mixing;
D O I：
10.1016/j.cep.2006.10.012
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
In this paper, a model based on a population balance equation (PBE) is developed. It aims at reproducing experimental floc size distributions obtained at steady state in a jar-test. The objective is to develop a simple model, based on physical phenomena, and that does not contain any adjustable parameters. Floc size distributions obtained using a part of a particle image velocimetry (PIV) device and image analysis are used to develop mathematical expressions for the aggregation and breakage kernels. A critical volume beyond which breakage is of significant importance is identified and related to the hydrodynamics. Hydrodynamic sequencing allows the distribution of the daughter particles resulting from a breakage event to be established. The model is finally successfully validated against experimental results. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：1264 / 1273
页数：10
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