添加晶种的间歇结晶器数学模型  

Model of Seeded Crytallization in Batch Crystallizer

作　　者：黄德春[1] 刘巍[2] 王志祥[1] 

机构地区：[1]中国药科大学药学院,江苏南京210009 [2]南京师范大学电气与电子工程学院,江苏南京210042

出　　处：《化工时刊》2003年第11期28-30,共3页Chemical Industry Times

摘　　要：动力学参数是设计结晶器和优化过程操作的主要依据。针对添加晶种的二次成核结晶过程 ,采用经验方程将反映结晶固相信息的透光率数据与CSD的二阶矩量进行关联 ,建立了包含透光率、液相浓度和相对过饱和度的动力学模型。并以KNO3 —H2 O为对象 ,运用该模型求取了结晶成核和生长动力学参数 ,结果与文献值相近。The kinetic parameters are of importance for the design and performance of the industrial crystallizers.For seeded batch crystallization process,combining with the empirical relationship between the transmittance and the second moment of the Crystals Size Distribution(CSD),a kinetic model was proposed in this paper.Using the model,the kinetic parameters of secondary nucleation and crystal growth of potassium nitrate in water could be estimated directly from the dynamic transmittance,the relative supersaturation and concentration,and the results appeared to be in good agreement with those published in the literature.

关 键 词：晶种 间歇结晶器 数学模型 动力学模型 二次成核 生长动力学参数 硝酸钾 

分 类 号：TQ018[化学工程]