Y型微通道反应器强化反萃P507-煤油溶液中稀土铒的研究

Study on Enhancing Stripping Loaded Erbium in P507-Kerosene Organic Solution by Y-Type Microchannel Reactor

采用微通道反萃取模型装置,以负载稀土铒离子的P507-煤油溶液为研究对象,系统考察了微通道反应器尺寸、盐酸浓度、进料流速和有机相中铒离子预负载量等因素对反萃取的影响。结果表明,当微通道直径为0.6mm,长度为200 cm,停留时间为8.48 s时,有机相中稀土Er3+的反萃率可达88.41%;盐酸浓度为6 mol/L时反萃率最高。与传统萃取方式相比,微通道反萃取具有较高的反萃取效率,总传质系数为传统萃取方式的8~10倍。

A novel method for stripping erbium from the pre-loaded P507-kerosene organic solution by a Y-type microchannel reactor was investigated.The effects of the microchannel size(length and diameter),the concentration of HCI,the flow rate and the concentration of loaded erbium in organic phase on the erbium stripping performance were focused on.The results show that when the diameter and length of the microchannel are 0.6 mm and 200 cm,respectively,and the residence time of the organic phase in the microchannel reactor is 8.48 s,the stripping rate of erbium from the pre-loaded organic phase could reach 88.41%.When the concentration of HCI increases,the stripping rate increases first and then drops;when its concentration is 6 mol/L,the stripping rate is the highest.Compared to the traditional mixer-settler extractor,the microchannel reactor exhibits a higher striping rate under the same condition,and the total mass transfer coefficient is 8 to 10 times higher than that of the traditional extraction methods.