MODEL OF MASS TRANSFER AND CRYSTAL GROWTH RATE IN CYCLING-FLUIDIZED CRYSTALLIZATION

YUAN Junsheng; WANG Yu; LIU Yanlan; WANG Shizhao; LI Feng

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MODEL OF MASS TRANSFER AND CRYSTAL GROWTH RATE IN CYCLING-FLUIDIZED CRYSTALLIZATION

更新时间：2025-12-10

- MODEL OF MASS TRANSFER AND CRYSTAL GROWTH RATE IN CYCLING-FLUIDIZED CRYSTALLIZATION
- CIESC Journal Issue 11, (2001)
- 作者机构：
  
  河北工业大学化工学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 November 2001，
  
  Published：25 November 2001
- 稿件说明：
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YUAN Junsheng, WANG Yu, LIU Yanlan, et al. MODEL OF MASS TRANSFER AND CRYSTAL GROWTH RATE IN CYCLING-FLUIDIZED CRYSTALLIZATION[J]. CIESC Journal, 2001, (11).
DOI：

YUAN Junsheng, WANG Yu, LIU Yanlan, et al. MODEL OF MASS TRANSFER AND CRYSTAL GROWTH RATE IN CYCLING-FLUIDIZED CRYSTALLIZATION[J]. CIESC Journal, 2001, (11). DOI：

摘要

依据Whiteman传质膜理论

针对循环流化床结晶过程

建立了传质和晶体生长速率理论模型 .实验研究表明

在较宽的流速范围内

晶体生长速率仅与结晶物系的物性、晶种粒度和过饱和度有关

其基本规律为 :晶体的平均线生长速率与扩散系数、晶种特征长度、晶体与溶液相对密度差、过饱和度成正比 ;与溶液的黏度、晶体的密度成反比 .仅需结晶物系的物性、过饱和度等数据

利用所建模型可方便地预测循环流化床结晶过程的晶体生长速率

Abstract

The models of mass transfer and crystal growth rate in cycling-fluidized crystallization were simulated by means of the theory of Whiteman’s mass transfer film.The experiment results show that within the some conditions

the crystal growth rate in cycling-fluidized crystallization is only related with the physical and chemical properties

the super-saturation level and the diameter of crystal seeds in crystal system

which regularity is that the crystal growth rate is in direct proportion to the diffusivity of solutes

the diameter of crystal seeds

the relative density between solution and the solute and the super-saturation level

and in inverse proportion to the viscosity of solution

the density of crystal

so with them the crystal growth rate in cycling-fluidized crystallization can be easily predicted among wide flow speed ranges by the models.

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