New effective‐nuclei concept for simplified analysis of batch crystallization
New effective‐nuclei concept for simplified analysis of batch crystallization
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用于简化批量结晶分析的新有效核概念
DOI：
10.1002/aic.690450906
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发表时间：
1999
期刊：
影响因子：
3.7
通讯作者：
N. Kubota
中科院分区：
文献类型：
--
作者：
M. Yokota;Akira Sato;N. Kubota
本文提出了一个新的“有效核”概念，用以简化有团聚的间歇结晶过程的分析。新的有效核概念来自于在间歇结晶器中实验观察到的团聚特性。小晶体可以与大晶体联合收割机，也可以相互结合。大尺寸晶体之间的团聚可以忽略不计。根据这些实验结果，新的有效晶核被定义为处于小尺寸晶体和大尺寸晶体之间的尺寸边界处的晶体。在建立粒子数平衡方程时，只考虑大尺寸晶体，可以省略团聚项。导出了理想批量冷却条件下（晶体过饱和度和有效生长速率均为常数）粒子数平衡方程的解析解。该解决方案很好地解释了测量数据。
A new “effective nuclei” concept for a simplified approach to the analysis of batch crystallization with agglomeration is proposed. The new effective-nuclei concept comes from agglomeration characteristics observed experimentally in a batch crystallizer. Small-sized crystals could combine with both large-sized crystals and each other. Agglomeration among large-sized crystals can be neglected. From these experimental results, new effective nuclei are defined as crystals at a size-boundary between small-sized crystals and large-4sized crystals. By taking into account only large-sized crystals in formulating population balance equation, the agglomeration term can be omitted. The analytical solution of the population balance equation is induced for an ideal batch-cooling case (constant supersaturation and constant effective growth rate of crystal). The solution explains measured data well.