双层桨搅拌槽的混合过程研究

Research of mixing process in stirred tanks with dual impeller

为了提高双层桨酸溶搅拌槽的混合速率,本文利用数值模拟的方法对双层桨以及改变结构参数后的搅拌桨的混合过程进行了研究。结果表明:桨叶直径、叶片角度、挡板宽度等五个结构参数对混合过程的影响不同,其中桨叶直径的增大能有效缩短混合时间,叶片角度的增加主要影响搅拌槽内的流场流型,挡板宽度对混合过程基本无影响。

To increase the mixing rate of acid-soluble stirred tanks with dual impeller,this paper studies on the mixing process of dual impeller and agitating impeller after adjusting structure parameters by numerical simulation.The results show that five structure parameters,such as impeller diameter and angle,width of baffle had different effects on nixing process.The increase of the impeller diameter could significantly shorten the mixing time.The impeller angle mainly affects the flow field of the stirred tank.The width of baffle hardly effects on mixing process.