会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Purex method and its uses
    • Purex方法及其用途
    • US07731870B2
    • 2010-06-08
    • US11793891
    • 2005-12-27
    • Jean-Paul Moulin
    • Jean-Paul Moulin
    • C09K11/04
    • G21C19/46Y02W30/883
    • The invention relates to a method constituting an improvement of the PUREX method, which makes it possible to obtain separation of uranium from the other actinides (Pu, Np, Th, . . . ) in a single purification cycle.This method successively comprises: a) co-extracting the uranium(VI), plutonium(IV) and other actinides(IV) or (VI) from an aqueous nitric solution by using solvent phase and scrubbing the latter; b) back-extracting the plutonium in oxidation state (III) from the solvent phase by using an aqueous nitric solution; c) back-extracting the uranium in oxidation state (VI) from the solvent phase by using an aqueous nitric solution; d) concentrating the aqueous nitric solution resulting from step c) with respect to uranium(VI); and it is characterized in that some of the uranium(VI)-concentrated aqueous solution obtained in step d) is used for back-extracting the actinide(IV) or actinides(IV) from the solvent phase during step b) or between steps b) and c).Uses: reprocessing of spent nuclear fuels based on UO2, (U,Pu)O2 or (U,Th)O2 mixed oxide.
    • 本发明涉及一种构成PUREX方法改进的方法,其可以在单个纯化循环中从其他锕系元素(Pu,Np,Th等)中获得铀的分离。 该方法依次包括:a)通过使用溶剂相并将其洗涤,从硝酸水溶液中共同萃取铀(VI),钚(IV)和其他锕系元素(Ⅳ)或(Ⅵ) b)通过使用硝酸水溶液从溶剂相中回收处于氧化态(III)的钚; c)通过使用硝酸水溶液从溶剂相中回收处于氧化态(Ⅵ)的铀; d)浓缩步骤c)得到的硝酸水溶液相对于铀(VI); 其特征在于,使用步骤d)中获得的一些铀(VI) - 浓缩水溶液用于在步骤b)期间或在步骤b之间从溶剂相中反萃取锕系元素(Ⅳ)或锕系元素(Ⅳ) )和c)。 用途:基于UO2,(U,Pu)O2或(U,Th)O2混合氧化物对废核燃料进行后处理。
    • 5. 发明申请
    • Purex Method and its Uses
    • Purex方法及其用途
    • US20080089819A1
    • 2008-04-17
    • US11793891
    • 2005-12-27
    • Jean-Paul Moulin
    • Jean-Paul Moulin
    • C22B60/02C09K11/04
    • G21C19/46Y02W30/883
    • The invention relates to a method constituting an improvement of the PUREX method, which makes it possible to obtain separation of uranium from the other actinides (Pu, Np, Th, . . . ) in a single purification cycle. This method successively comprises: a) co-extracting the uranium(VI), plutonium(IV) and other actinides(IV) or (VI) from an aqueous nitric solution by using solvent phase and scrubbing the latter; b) back-extracting the plutonium in oxidation state (III) from the solvent phase by using an aqueous nitric solution; c) back-extracting the uranium in oxidation state (VI) from the solvent phase by using an aqueous nitric solution; d) concentrating the aqueous nitric solution resulting from step c) with respect to uranium(VI); and it is characterized in that some of the uranium(VI)-concentrated aqueous solution obtained in step d) is used for back-extracting the actinide(IV) or actinides(IV) from the solvent phase during step b) or between steps b) and c). Uses: reprocessing of spent nuclear fuels based on UO2, (U,Pu)O2 or (U,Th)O2 mixed oxide.
    • 本发明涉及一种构成PUREX方法改进的方法,其可以在单个纯化循环中从其他锕系元素(Pu,Np,Th等)中获得铀的分离。 该方法依次包括:a)通过使用溶剂相并将其洗涤,从硝酸水溶液中共同萃取铀(VI),钚(IV)和其他锕系元素(Ⅳ)或(Ⅵ) b)通过使用硝酸水溶液从溶剂相中回收处于氧化态(III)的钚; c)通过使用硝酸水溶液从溶剂相中回收处于氧化态(Ⅵ)的铀; d)浓缩步骤c)得到的硝酸水溶液相对于铀(VI); 其特征在于,使用步骤d)中获得的一些铀(VI) - 浓缩水溶液用于在步骤b)期间或在步骤b之间从溶剂相中反萃取锕系元素(Ⅳ)或锕系元素(Ⅳ) )和c)。 用途:基于UO 2,(U,Pu)O 2或(U,Th)O 2 2混合氧化物的废核燃料的后处理 。