MATHEMATICAL MODEL OF THREE-PHASE FLUIDIZED BED FOR SOLUTION CRYSTALLIZATION

Zhang Xiaoping; Guo siyuan; Li lin and Qian Yu( Research Institute of Chemical Engineering South China University of Technology; Guangzhou 510641)

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MATHEMATICAL MODEL OF THREE-PHASE FLUIDIZED BED FOR SOLUTION CRYSTALLIZATION

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- MATHEMATICAL MODEL OF THREE-PHASE FLUIDIZED BED FOR SOLUTION CRYSTALLIZATION
- CIESC Journal Issue 6, (1997)
- 作者机构：
  
  华南理工大学化学工程研究所!广州510641,华南理工大学化学工程研究所!广州510641,华南理工大学化学工程研究所!广州510641,华南理工大学化学工程研究所,广州,510641
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q026
- Online First：25 December 1997，
  
  Published：25 December 1997
- 稿件说明：
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Zhang Xiaoping, Guo siyuan, Li lin and Qian Yu( Research Institute of Chemical Engineering South China University of Technology, et al. MATHEMATICAL MODEL OF THREE-PHASE FLUIDIZED BED FOR SOLUTION CRYSTALLIZATION[J]. CIESC Journal, 1997, (6).
DOI：

Zhang Xiaoping, Guo siyuan, Li lin and Qian Yu( Research Institute of Chemical Engineering South China University of Technology, et al. MATHEMATICAL MODEL OF THREE-PHASE FLUIDIZED BED FOR SOLUTION CRYSTALLIZATION[J]. CIESC Journal, 1997, (6). DOI：

摘要

要实现工业结晶过程新工艺和设备的开发以及过程操作的优化

就必须建立涉及结晶过程特性并反映结晶器流动、混合和传递规律及其相互作用关系的结晶器总体数学模型。过去几十年中已有许多研究者进行了这方面的探索

提出了各种各样的模型。特别是70年代初由Randolph和Larson提出的粒数衡算模型

将产品的粒度分布与结晶器的结构参数和操作参数联系起来

成为结晶器设计、放大和优化从经验上升到科学的重要标志。针对不同结晶系统提出的多种数学模型中

最具典型代表性的数学模型是由Mullin等提

Abstract

Based on the population balance theory

a partial mixing series model

which integrates the kinetics of crystal growth with the hydrodynamics of characterization of the geometric properties and operating parameters of the device

was developed to describe the behaviour of three - phase fluidized bed crystallizer. With this model

the concentration distribution of the solution

size distribution of the crystals and the mean size of the products were estimated. The calculated results agreed well with the experimental data for sucrose crystallization in a three - phase fluidized bed. The fact indicates that the model is quite reasonable

practical and capable of providing a basis for the design and scale up of three - phase crystallization systems.

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