CFD modelling of gas-liquid reactive precipitation

被引:23
作者
Al-Rashed, MH [1 ]
Jones, AG [1 ]
机构
[1] UCL, Dept Chem Engn, London WC1E 7JE, England
关键词
D O I
10.1016/S0009-2509(99)00194-3
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
CFD is adopted to predict the effects of mixing during batch-wise gas-liquid reactive precipitation. A 2-D flow simulation is developed for the chemical reaction with precipitation process using the moment transformation of the population balance. A comparison is made between the CFD model predictions and the film and penetration theories, respectively, for the same time range using the calcium carbonate system. The CFD simulation demonstrates an intermediate behaviour in predicting the transient mean crystal size highlighting the role of the hydrodynamics in the precipitation process. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:4779 / 4784
页数:6
相关论文
共 17 条
[1]  
ALRASHED MH, 1996, USA SPS S AEA TECHN
[2]  
ALRASHED MH, 1996, IND CRYSTALLIZATION, V96, P419
[3]  
ALRASHED MH, 1998, THESIS U LONDON
[4]  
Danckwerts P.V., 1970, GAS LIQUID REACTIONS
[5]   PREDICTION OF MICROMIXING EFFECTS IN PRECIPITATION - CASE OF DOUBLE-JET PRECIPITATORS [J].
DAVID, R ;
MARCANT, B .
AICHE JOURNAL, 1994, 40 (03) :424-432
[6]  
GARSIDE J, 1997, ACTA POLYTECHNICA SC, V244
[7]  
HOSTOMSKY J, 1995, CHEM ENG RES DES, V73, P241
[8]   ON THE EFFECT OF LIQUID-MIXING RATE ON PRIMARY CRYSTAL SIZE DURING THE GAS-LIQUID PRECIPITATION OF CALCIUM-CARBONATE [J].
JONES, AG ;
HOSTOMSKY, J ;
ZHOU, L .
CHEMICAL ENGINEERING SCIENCE, 1992, 47 (13-14) :3817-3824
[9]  
Ranodolph A., 1988, THEORY PARTICULATE P
[10]   Influence of hydrodynamics on precipitation: A computational study [J].
Seckler, MM ;
Bruinsma, OSL ;
Van Rosmalen, GM .
CHEMICAL ENGINEERING COMMUNICATIONS, 1995, 135 :113-131