Oslo结晶器晶体粒径分布特征的CFD模拟  

CFD Simulation of Crystal Size Distribution Characteristics in Oslo Crystallizer

作　　者：李娜[1] 沙作良[1] 杨兴红[1] 朱亮[1] 

机构地区：[1]天津市海洋资源与化学重点实验室天津市海洋化工与技术工程中心天津科技大学海洋科学与工程学院,天津300457

出　　处：《天津科技大学学报》2015年第4期45-49,共5页Journal of Tianjin University of Science & Technology

基　　金：国际科技合作重点资助项目(2013DFG52490);国家自然科学基金资助项目(21076157)

摘　　要：采用计算流体力学的研究方法,通过多分散相模拟技术,研究同一液体流场内不同粒径晶体在Oslo结晶器内的分布规律,并对结晶器进行了分区域考察.结果表明:在适宜的循环液体流速下,在结晶区域可实现稳定的晶体粒径分布;循环速率与要求的晶体粒径直接相关;在变径区域可实现晶体的粒径分级,控制循环液体中的晶体粒径和晶体悬浮密度.此研究结果可为进一步了解Oslo结晶器内结晶过程的进行和结晶器的设计提供参考.The rule of different sized crystals＇ distribution in the same liquid flow field in Oslo crystallizer was studied with the multiple dispersed phase simulation technique and Computational Fluid Dynamics （CFD）. The study showed that a stable crystal size distribution in different regions of the crystallizer can be realized at an appropriate flow rate of the circulating liquid in the crystalline regions. The circulation rate is directly related to the required crystal size. Meanwhile, the reducing region can not only help crystal size classification, but also control the crystal size and crystal suspension density in the cir- culating liquid. This study can provide some reference for further researches on the crystallization process and crystallizer design.

关 键 词：CFD Oslo结晶器 晶体粒径分布 晶体悬浮密度 

分 类 号：TQ019[化学工程]