P_（507）（煤油）／（Sm－Eu－Gd）Cl_3（EuCl_2）－HCl体

Studies on the Hydrodynamics and Mass Transfer ofHEH(EHP)(Kerosene)/(Sm-Eu-Gd)Cl_3(EuCl_2)-HCl System in a Reciprocating Plate Extraction Column

本文在选定的工艺条件下，在振动筛板柱中研究了Ｐ（５０７）（煤油）／（Ｓｍ－Ｅｕ－Ｇｄ）Ｃｌ３（ＥｕＣｌ２）－ＨＣｌ体系的两相流动特性和传质特性。结果表明，该体系在振动柱中有良好的流动特性。在流比２．５～４．０，振幅＝１０ｍｍ，频率＝３００～３５０ｍｉｎ（－１）条件下，两相总液泛通量达２２０Ｌ／ｄｍ２·ｈ，存留分数一般为１２～１５％。用分段近似计算法，估算了柱子的传质效率。对于较难萃取的组分Ｓｍ，平均传质单元高度为０．５２ｍ，平均理论级当量高度为１．８２ｍ。

In this article, the flow-characteristics and mass transfer of HEH(EHP)(Kero- sine)/(Sm-Eu-Gd)Cl3(EuCl2)-HCl system were measured in a reciprocating plate column un-der selective technological conditions,The results showed that the system has a good flow charac- teristics in this column,The flooding throughput of two phases reachs to 220 L/dm2· h under the conditions of flow ratio=2.5～4.0,A=10mm and f=300～350min(-1) .And usually the holdup is about 12～15%. The efficiency of mass transfer in the column was estimated using sectional ap- proximation. The average height of transfer unit(HTU)equals 0.52m for samarium which is ex- tracted with more difficult,and the average HETS equals 1.82m,