溶剂萃取槽内流体混合特性的计算模拟

Computational Simulation of Fluid Mixing Properties in Rare Earth Extraction Reactor

自行设计溶剂混合萃取槽,运用Fluent软件模拟萃取槽内流体流动状况、不同高度截面上流场分布状况、不同方案下槽内死区体积分数和混匀时间等指标,并采用多指标综合分析法分析不同方案下萃取槽的综合性能。结果表明:搅拌器底端距混合室底部高度为350 mm条件下,死区体积分数为1.31%;高度为250 mm条件下,体系混匀时间最短,且混合效果良好。

Rare earth extraction reactor was self-designed,the Fluent software was used to simulate fluid flow status,flow field distribution at different height sections,dead zone volume fraction and fluid mixing time in the reactor under different schemes.Moreover,the reactor comprehensive performance under different schemes was analyzed by multi-index integrated evaluation method.The results show that when the height of stirrer bottom to mixing chamber bottom is 350 mm,dead zone volume fraction is 1.31%;the height is 250 mm,system mixing time is shortest and mixing effect is good.