档板结构对重稀土圆筒式萃取槽三维流场的影响  

Effect of baffle structure on three-dimensional flow field of heavy rare earth cylinder extraction tank

作　　者：逄启寿[1] 万福兴 王高平 PANG Qishou;WAN Fuxing;WANG Gaoping(School of Mechanical and Electrical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]江西理工大学机电工程学院,江西赣州341000

出　　处：《厦门大学学报（自然科学版）》2022年第2期207-214,共8页Journal of Xiamen University：Natural Science

摘　　要：在稀土萃取的过程中,萃取槽混合室主要用于混合水相和有机相萃取剂P507,以便于传质.其内部结构对槽内流体流动与料液的混合也有着重要影响.本研究主要针对萃取槽内档板结构对槽内流场的影响进行分析,利用计算流体动力学(CFD)软件对不同档板宽度与倾角下的槽内流场进行模拟,分析各流场的流体速度与湍动能,发现:档板的宽度从10 mm增加至15 mm时,流体的混合效果得到改善;继续增加档板宽度至20 mm时,流体混合效率反而会降低;当档板的倾斜方向与叶片转动方向一致时,有利于料液的流动,从而有利于料液混合与两相传质.In the process of rare earth extraction,the mixing chamber of the extraction tank is used to primarily mix the aqueous phase and the organic phase P507 so that the mass transfer is facilitated.Its internal structure also exerts an important effect on the fluid flow and the mixing of material and liquid.In this study,we focus on analyses regarding the influence of extraction slot damper structures on flow fields.Using computational fluid dynamics(CFD)software for different baffle widths and inclinations,we simulate the flow fluid velocity and turbulent kinetic energy.It is concluded that,when increasing the width of the baffle from 10 mm to 15 mm can lead to improving the mixing effect of fluids.When continue increasing the baffle width to 20 mm will reduce the fluid-mixing efficiency.When the tilt direction of the baffle becomes consistent with the rotating direction of the blade,it is conducive to the flow of the material liquid so that the mixture of the material liquid and two-phase mass transfers is facilitated.

关 键 词：稀土萃取槽 档板结构 流场分析 数值模拟 

分 类 号：TF804.2[冶金工程—有色金属冶金]