脉冲筛板柱萃取分离釷、鈾的研究(Ⅱ)——钍、铀净化低去污循环流程脉冲筛板柱传质性能的研究  

A STUDY ON PULSED SIEVE-PLATE COLUMN FOR THE Th-U EXTRACTION SEPARATION PROCESS(Ⅱ)——THE STUDY OF MASS TRANSFER PERFORMANCE OF PULSED SIEVE-PLATE COLUMN OF Th-U PURIFICATION LOW DECONTAMINATION CYCLE PROCESS

作　　者：安延军[1] 仝继红[1] 马栩泉[1] 邰德荣[1] 

机构地区：[1]清华大学核能技术设计研究院

出　　处：《核科学与工程》1992年第4期373-384,共12页Nuclear Science and Engineering

摘　　要：在2英寸脉冲筛板柱中,根据钍铀低去污循环流程所要求的工艺条件,分别测定了共去污加盐段、共去污萃取段、共去污洗涤段、钍反萃段、钍反萃洗涤段、铀反萃段等6种工况的脉冲筛板柱水相及有机相稳态浓度剖面和水相出口浓度随时间变化曲线,并利用平衡分配数据模型,计算了所有条件下的H^+、Th、U的理论级当量高度(HETS)值及真实传质单元高度(HTU)值。结果表明,各工艺要求组分的HETS值均小于或接近于1m,证明此流程在工程上是可行的,工艺参数是较优的。In 50mm diameter pulsed sieve-plate column, steady state concentration profiles of aqueous and organic phases and concentration of aqueous phase exit-time relation curves have been determined for the co-decontamination salting-out section, the co-decontamination extaction section, the codecontamination-scrubbing section, the thorium stripping section, the thorium stripping-scrubbing section and the uranium stripping section of the column of the thorium-uranium low decontamination cycle process. Using a model based on eguilibrium distribution date, the Height Equivaent to a Theoretical Stage (HETS)and Height of 'True' Transfer Unit(HTU)of H^+, Th and U of above-mentioned condition are determined. The results show that HETS values of all technological requirement components are less or near 1m. The results also indicate that this process is technically feasible and gives better technological parameters.

关 键 词：核燃料后处理 萃取 钍 铀 

分 类 号：TL241.14[核科学技术—核燃料循环与材料]