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    • 4. 发明专利
    • Method and apparatus for processing radioactive waste, and its solidifying method
    • 用于处理放射性废物的方法和装置及其固化方法
    • JP2003294888A
    • 2003-10-15
    • JP2002094111
    • 2002-03-29
    • Toshiba Corp株式会社東芝
    • HODOZUKA MASATOSHITOYOHARA NAOMIMIKURA MICHITAKAMURATA EIICHIKANEKO MASAAKITAKAHASHI RIYOUTASAKAI HIROHIKO
    • G21F9/06G21F9/02G21F9/10G21F9/16
    • PROBLEM TO BE SOLVED: To reuse salt waste produced by a dry-type reprocessing method, or to solidify it. SOLUTION: When spent fuel is reprocessed by the dry method, waste of fused salt being an chloride of alkaline metal is produced. After this waste 1 of spent fused salt is dissolved 2 in water, this aqueous solution is electrolytically dialyzed 3. Consequently, impurities are removed, and fused salt being a chloride of alkaline metal is recovered as an aqueous solution of a hydroxide of the alkaline metal. The recovered aqueous solution is caused to react with hydrochloric acid, and is reused again as fused salt. The recovered processed solution 4 is solidified and reused 5. Namely, it is solidified into waste, or it is reacted with phosphoric acid to produce phosphate, and the phosphate is vitrified. COPYRIGHT: (C)2004,JPO
    • 要解决的问题:重新使用由干式再加工方法生产的盐类废物或使其固化。

      解决方案:当废燃料通过干法再处理时,产生作为碱金属氯化物的熔融盐的浪费。 废弃的1熔融盐溶解后,将该水溶液2溶解在水中,将该水溶液进行电解透析3.因此,除去杂质,作为碱金属的氢氧化物的水溶液回收作为碱金属的氯化物的熔融盐 。 使回收的水溶液与盐酸反应,并再次作为熔融盐再次使用。 回收的处理溶液4固化并重新使用5.即,其被固化成废物,或者与磷酸反应以产生磷酸盐,并且磷酸盐被玻璃化。 版权所有(C)2004,JPO

    • 5. 发明专利
    • Disposal method for radioactivated graphite and its system
    • 放射性石墨及其系统的处理方法
    • JP2003014890A
    • 2003-01-15
    • JP2001196395
    • 2001-06-28
    • Toshiba Corp株式会社東芝
    • TAKAHASHI RIYOUTAMIKURA MICHITAKAMURATA EIICHITOYOHARA NAOMISATO TATSUAKINATSUI KAZUJI
    • G21F9/28B08B3/12B09B3/00G21F9/06G21F9/32
    • PROBLEM TO BE SOLVED: To remove radioactive nucleides adhering to activated graphite and reduce discharge of radioactive nucleides from the activated graphite to be buried.
      SOLUTION: The activated graphite is washed with ultrasonic or a chemical decontamination agent and C-14 in washing liquid is mineralized and C1-36 is recovered by adsorption. By heating the activated graphite after washing, included C1-36 is removed by evaporation. The heated activated graphite is solidified. For the condition of washing activated graphite, it is proper to irradiate with ultrasonic in solution of oxidation processing below pH 4 and temperature of nearly 80°C. The heating processing of the activated graphite is proper to heat from below to 900°C under the existence of inert gas. C1-36 is recovered in a trap which a cooling device is installed.
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:去除附着在活性石墨上的放射性核,并减少活性石墨放射性核素的放电。 解决方案:活性石墨用超声波或化学去污剂洗涤,洗涤液中的C-14矿化,通过吸附回收C1-36。 洗涤后加热活性石墨,通过蒸发除去C36。 加热的活化石墨被固化。 对于活性石墨的清洗条件,适当的是超声波照射超过pH4的氧化处理和接近80摄氏度的温度。 在惰性气体的存在下,活性石墨的加热处理适宜于从低到900℃。 在安装冷却装置的陷阱中回收C1-36。
    • 8. 发明专利
    • Nuclide separation method of radioactive waste, nuclide sample production method, and uranium analysis method
    • 放射性废物的核素分离方法,核素样品生产方法和铀分析方法
    • JP2006317290A
    • 2006-11-24
    • JP2005140364
    • 2005-05-12
    • Toshiba Corp株式会社東芝
    • MURATA EIICHIHARUGUCHI YOSHIKOMIKURA MICHITAKASATO KOKICHI
    • G01N1/10G01T1/167G01T7/02
    • PROBLEM TO BE SOLVED: To provide a new separation method of a nuclide included in radioactive waste, and a method for simple uranium quantitative analysis in the radioactive waste.
      SOLUTION: In step S1, hydrofluoric acid aqueous solution wherein the nuclide in the radioactive waste is dissolved is prepared and produced. In step S2, ion-exchange adsorption of the nuclide dissolved in the hydrofluoric acid aqueous solution is performed by using a fluorine-ion type anion-exchange resin. In step S3, the nuclide subjected to the ion-exchange adsorption onto the anion-exchange resin is selectively eluted and separated by a prescribed chemical medical solution. In step S4, the nuclide is subjected to coprecipitation separation by adding, for example, samarium. In step S5, measurement of an α-ray spectrum of a coprecipitate is performed. Thus, for example, identification of an uranium isotope in the radioactive waste and its quantitative analysis can be performed simply.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供放射性废物中包含的核素的新分离方法,以及放射性废物中简单铀定量分析的方法。 解决方案:在步骤S1中,制备并生产放射性废物中的核素溶解的氢氟酸水溶液。 在步骤S2中,使用氟离子型阴离子交换树脂进行溶解在氢氟酸水溶液中的核素的离子交换吸附。 在步骤S3中,经阴离子交换树脂进行离子交换吸附的核素被规定的化学药液选择性地洗脱分离。 在步骤S4中,通过添加例如钐将核素进行共沉淀分离。 在步骤S5中,进行共沉淀物的α射线谱的测定。 因此,例如,可以简单地进行放射性废物中的铀同位素的鉴定及其定量分析。 版权所有(C)2007,JPO&INPIT
    • 9. 发明专利
    • Method and device for treating radioactive waste
    • 用于处理放射性废物的方法和装置
    • JP2008039412A
    • 2008-02-21
    • JP2006209870
    • 2006-08-01
    • Toshiba Corp株式会社東芝
    • YAMASHITA TAKEOMURATA EIICHIMIKURA MICHITAKAHARUGUCHI YOSHIKOMIYAMOTO MASAYASAKAI HITOSHI
    • G21F9/06G21F9/10G21F9/16G21F9/30
    • PROBLEM TO BE SOLVED: To provide a method and a device for treating radioactive waste to effectively separate and recover uranium, transuranium elements or radioactive nuclides from radioactive waste containing uranium, transuranium elements, radioactive nuclides or compounds of them.
      SOLUTION: A method for treating radioactive waste is used, which has a dissolutive separation process for dissolutively separating uranium, transuranium elements or radioactive nuclides from radioactive waste containing the uranium, the transuranium elements, the radioactive nuclides or compounds of them by an organic acid solution; a precipitate generation process for generating precipitate by detecting an oxidation-reduction potential in an oxidation-reduction reaction to react the uranium, the transuranium elements or the radioactive nuclides obtained in the above dissolutive separation process with an oxidizing agent and concurrently regulating the loading of the oxidizing agent on the basis of the result of the detection; and the separation process for separating the precipitate obtained in the above precipitate generation process.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种处理放射性废物以有效分离和回收含有铀,铀元素,放射性核素或其化合物的放射性废物的铀,铀元素或放射性核素的方法和装置。 解决方案:使用一种处理放射性废物的方法,其具有溶解分离方法,用于将含有铀,铀元素,放射性核素或它们的化合物的铀,铀元素或放射性核素从放射性废物中分离出来 有机酸溶液; 通过检测氧化还原反应中的氧化还原电位,使用上述溶解分离方法获得的铀,铀元素或放射性核素与氧化剂反应并同时调节负载量的沉淀物生成方法 基于检测结果的氧化剂; 以及用于分离在上述沉淀生成工序中得到的析出物的分离工序。 版权所有(C)2008,JPO&INPIT
    • 10. 发明专利
    • Radioactive waste liquid treatment apparatus and method
    • 放射性废液处理装置及方法
    • JP2007003270A
    • 2007-01-11
    • JP2005181792
    • 2005-06-22
    • Toshiba Corp株式会社東芝
    • HARUGUCHI YOSHIKOMIKURA MICHITAKAMURATA EIICHISATO TATSUAKISAKURAI JIROTAKADA TAKAO
    • G21F9/10G21F9/06G21F9/16
    • PROBLEM TO BE SOLVED: To enhance a separation efficiency in operation of separating a radionuclide by controlling the valency of iron in a radioactive waste liquid and then changing iron into iron oxide. SOLUTION: A radioactive waste liquid treatment apparatus comprises a waste liquid tank 1 wherein the pH of the waste liquid is controlled by using a pH conditioner fed from a pH conditioner tank 3 and iron ions contained in the waste liquid are reduced by a reducing agent fed from a reducing agent tank 2 while the liquid is being heated, a conversion tank 5 provided with a temperature control facility 4 wherein the pH of the waste liquid is controlled by using the pH conditioner fed from the pH conditioner tank 3 and iron hydroxide in the reduced radioactive waste liquid fed from the waste liquid tank 1 is converted into iron oxide, a solid-liquid separator 6 for executing the solid-liquid separation of the radioactive waste liquid fed from the conversion tank 5 into a supernatant liquid and residue, a supernatant liquid accepting tank 7 for storing the supernatant liquid fed from the solid-liquid separator 6 and a sludge tank 8 for storing the residue fed from the solid-liquid separator 6. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:通过控制放射性废液中的铁的价态,然后将铁变成氧化铁来提高分离放射性核素的分离效率。 解决方案:放射性废液处理装置包括:废液罐1,其中通过使用从pH调节剂罐3供给的pH调节剂和废液中含有的铁离子来控制废液的pH, 设置有温度控制装置4的转换槽5,其中通过使用从pH调节剂罐3供给的pH调节剂和铁调节剂来控制废液的pH, 将从废液罐1供给的放射性废弃废液中的氢氧化物转化成氧化铁,将从转化罐5供给的放射性废液的固液分离成上清液和残渣的固液分离器6 ,用于储存从固液分离器6供给的上清液的上清液接收槽7和用于储存从固液分离器6供给的残留物的污泥槽8 作者6.版权所有(C)2007,JPO&INPIT