溶液中的结晶和沉降行为的实验研究  

Study on Crystallization and Sedimentation Behaviors in Solution

作　　者：郭晓冰[1] 龙晓钦[2] 杨芳[1] 冯明[3] 邹庆[1] 唐敏君[1] 肖泽仪[1] 

机构地区：[1]四川大学化学工程学院化工过程机械系,四川成都610065 [2]重庆紫光化工有限责任公司,重庆永川402161 [3]四川久远化工技术有限公司,四川绵阳621000

出　　处：《四川化工》2007年第6期10-13,17,共5页Sichuan Chemical Industry

摘　　要：在亚氨基二乙腈(IDAN)溶液中,对不同的停留时间晶体的沉降和分级行为、晶体的平均粒径以及粒度分布、晶体的形貌特征进行了分析。实验结果表明,随着停留时间的延长,在残余过饱和度已趋于稳定不变的情况下,沉积底部的晶体的质量逐渐增加,平均粒径不断增大,晶体形貌不断改善、结构更加完整。这种结晶成长和沉降行为对结晶过程和设备的设计和操作都有重要意义。With a solution of IDAN,the crystallization and sedimentation behaviors were experimentally studied.Classification,mean particle size and its distribution,morphology of the crystal for different crystallizing operation time were analyzed.The results showed that with the operation time extending and the remaining super-saturation keeping steady,the cumulating mass of the depositing crystal increased,mean particle size grew up,shape and configuration of the crystal were better.These experiments for crystallization and sedimentation behaviors will be valuable for design and operation of the process and crystallizer.

关 键 词：溶液结晶 沉降 粒度分布 晶体形貌 

分 类 号：TQ026[化学工程]