STUDIES ON UNSTEADY-STATE BEHAVIOR OF CONTINUOUS CRYSTALLIZATION PROCESSES

王静康; 卫宏远; 张远谋

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STUDIES ON UNSTEADY-STATE BEHAVIOR OF CONTINUOUS CRYSTALLIZATION PROCESSES

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- STUDIES ON UNSTEADY-STATE BEHAVIOR OF CONTINUOUS CRYSTALLIZATION PROCESSES
- CIESC Journal Issue 5, (1993)
- 作者机构：
  
  天津大学化工系,天津大学化工系,天津大学化工系天津300072,天津300072,天津,300072
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 October 1993，
  
  Published：25 October 1993
- 稿件说明：
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王静康, 卫宏远, 张远谋. STUDIES ON UNSTEADY-STATE BEHAVIOR OF CONTINUOUS CRYSTALLIZATION PROCESSES[J]. CIESC Journal, 1993, (5).
DOI：

王静康, 卫宏远, 张远谋. STUDIES ON UNSTEADY-STATE BEHAVIOR OF CONTINUOUS CRYSTALLIZATION PROCESSES[J]. CIESC Journal, 1993, (5). DOI：

摘要

建立了连续溶液结晶过程非稳态系统模拟软件

并应用该软件对过程内在不稳定性进行了分析.在10L及200L复杂结晶器内进行动态行为实验研究

观察晶粒粒度分布(CSD)的动态规律及系统参数对稳定性的影响趋向

实验与模拟分析的结果一致.

Abstract

Crystal size distribution (CSD) transients and internal instability of continuous crystallization processes were studied systematically. The dynamic models describing continuous crystallization were solved by using some new mathematical techniques. And a software was developed which can simulate the sustained limit-cycle behavior of crystallization and the transients in CSD caused by outside disturbances. By means of this software

the influence of various system parameters on CSD stability and the causes of cycling were studied. Simultaneously

transient responses of CSD for a step change in outside operating condition

such as feed flow rate and concentration

product removal rate

fines destruction rate

classifier flow rate

etc.

were investigated in detail. The results observed experimentally in a 200L KCl complex crystallizer and a 10L NH4Cl complex crystallizer in this study and the experimental data presented by previous researchers verified that our softwares are suceessful.

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