• 作者： Shiau, Lie-Ding; Liu, Yung-Chang
• 中文摘要： 本論文推導一理論模式來描述：在連續式流體化床結晶槽中，晶體大小和溶質濃度與床位置高度的變化關係。假設在流體化床中之固體相以理想化的方式分層，而液相以塞狀流的形式向上流過流體化床。在此處之理論模式因考慮了流體化床之孔隙度隨著床中位置高度而變化，更能反應出晶體粒子確實的流體化行為。而此理論模式，可用來預測出口的溶質濃度和產品的晶體大小與流體化床結晶槽總高度的關係，另外，晶種之進料速率和流體化床中床高度/床直徑之比對結晶體槽效能的影響也將一起被探討研究。
• 英文摘要： In this paper a theoretical model is developed to describe the variations of crystal size and solute concentration with the vertical position in a continuous fluidized bed crystallizer. It is assumed that the liquid phase moves upward through the bed in plug flow and the solid phase in the fluidized bed is perfectly classified. This model would more reflect the actual fluidization behavior of crystals as the variation of bed voidage along the bed height is considered. It allows one to predict the outlet solute concentration and the product crystal size against the total bed height of a fluidized bed crystallizer. The effects of seed feed rate and height/diameter ratio on the performance of a continuous fluidized bed crystallizer are also discussed.
• 中文關鍵字： 模擬; 流體化床; 塞狀流; 分層; 空隙度; 結晶槽
• 英文關鍵字： Simulation; Fluidized Bed; Plug Flow; Classification; Voidage; Crystallizer