An advanced purex process based on salt-free reductants
An advanced purex process based on salt-free reductants
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DOI：
10.1515/ract-2014-2120
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发表时间：
2014-02
影响因子：
1.8
通讯作者：
H. Hui;Ye Guoan;Tang Hongbin;Zheng Weifang;Li Gaoliang;Lin Rushan
中科院分区：
文献类型：
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作者：
H. Hui;Ye Guoan;Tang Hongbin;Zheng Weifang;Li Gaoliang;Lin Rushan
摘要 以N,N-二甲基羟胺（DMHAN）和甲基肼（MH）两种有机还原剂为U/Pu分离试剂，建立了先进的钚和铀回收工艺。这种基于有机还原剂（APOR）的Advanced Purex工艺由三个循环组成，包括U/Pu共净化/分离循环、铀纯化循环和钚纯化循环。在U/Pu共净化/分离循环和钚纯化循环中使用DMHAN和MH作为钚反萃剂，APOR工艺表现出高性能，具有以下亮点：1）由于取消了Tc洗涤操作和补充萃取操作，过程更加简单；2）在第一循环中可以实现U/Pu的高效率分离；3）在Pu纯化循环中通过简单的萃取即可获得高浓度的钚产品溶液操作代替钚溶液的循环萃取或蒸发。
Abstract An advanced plutonium and uranium recovery process has been established based on two organic reductants, N,N-dimethylhydroxylamine (DMHAN) and methylhydrazine (MH), as U/Pu separation reagents. This Advanced Purex process based on Organic Reductants (APOR) is composed of three cycles, including U/Pu co-decontamination/separation cycle, uranium purification cycle and plutonium purification cycle. Using DMHAN and MH as plutonium stripping reagents in the U/Pu co-decontamination/separation cycle and plutonium purification cycle, the APOR process exhibits high performance with following highlights: 1) the process is much simpler because of the elimination of Tc scrubbing operation and the supplement extraction operation, 2) high efficiency of U/Pu separation can be achieved in the first cycle, 3) plutonium product solution of high concentration can be obtained in the Pu purification cycle with a simple extraction operation instead of circumfluent extraction or evaporation of the plutonium solution.