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    • 1. 发明专利
    • Laundry waste liquid processing method
    • 洗衣液废液处理方法
    • JP2012073118A
    • 2012-04-12
    • JP2010218200
    • 2010-09-29
    • Hitachi-Ge Nuclear Energy Ltd日立Geニュークリア・エナジー株式会社
    • MATSUBARA HIROFUMIAIZAWA MOTOHIROFUJITA KAZUHIROKAWASAKI TORUINOUE HITOSHI
    • G21F9/08C02F1/04C02F1/42C02F1/469G21F9/06G21F9/12
    • PROBLEM TO BE SOLVED: To provide a laundry waste liquid processing method capable of preventing foam formation caused by evaporative concentration of laundry waste liquid containing nonionic surface active agent.SOLUTION: An ion exchange resin tower 26 filled with a cation exchange resin receives a laundry waste liquid discharged from a laundry waste liquid collecting tank 2 and containing nonionic surface active agent and higher fatty acid, higher alcohol, and sweats (salt content) eluted from clothing during laundry. The cation exchange resin eliminates cationic components (Na ion, for example) contained in the laundry waste liquid, and the pH of the laundry waste liquid drops. When the laundry waste liquid pH falls within the range of 3.0 to 7.5 as a result of having the laundry waste liquid circulated between the laundry waste liquid collecting tank 2 and the ion exchange resin tower 26, a supply of the laundry waste liquid to the ion exchange resin tower 26 is stopped, and the laundry waste liquid is supplied from the laundry waste liquid collecting tank 2 to a heater 7, and is heated in the heater 7 before being supplied to a concentration can 5. When the laundry waste liquid pH indicates 6.0 for example, the laundry waste liquid with pH 6.0 is evaporatively concentrated in the concentration can 5.
    • 解决的问题:提供一种能够防止由含有非离子表面活性剂的衣物废液的蒸发浓缩引起的泡沫形成的洗衣废液处理方法。 解决方案:填充有阳离子交换树脂的离子交换树脂塔26接收从衣物废液收集罐2排出并含有非离子表面活性剂和高级脂肪酸,高级醇和汗液的洗衣废液(盐含量 )在衣物洗脱时洗脱。 阳离子交换树脂消除了洗衣废液中含有的阳离子成分(例如Na离子),衣物废液的pH下降。 当衣物废液在洗涤废液收集罐2和离子交换树脂塔26之间循环时,洗涤废液pH落在3.0〜7.5的范围内时,洗衣废液向离子的供给 交换树脂塔26停止,衣物废液从洗涤废液收集箱2供给到加热器7,并在加热器7中加热至浓缩罐5.当洗衣废液pH值表示 6.0,例如,pH 6.0的洗衣废液在浓缩罐5中蒸发浓缩。版权所有(C)2012,JPO&INPIT
    • 2. 发明专利
    • Method for reducing radiation exposure in nuclear power plant, nuclear power plant and fuel assembly
    • 核电厂,核电厂和燃料装置减少辐射暴露的方法
    • JP2011047960A
    • 2011-03-10
    • JP2010271384
    • 2010-12-06
    • Hitachi-Ge Nuclear Energy Ltd日立Geニュークリア・エナジー株式会社
    • ISHIDA KAZUNARIHOSOKAWA HIDEYUKIWADA YOICHIAIZAWA MOTOHIRONAGASE MAKOTOFUSE MOTOMASAUSUI NAOSHI
    • G21C3/06G21D1/00
    • Y02E30/40
    • PROBLEM TO BE SOLVED: To provide a method for reducing radiation exposure in a nuclear power plant which can further reduce radiation exposure, even when the degree of burnup of fuel assemblies is further increased. SOLUTION: A BWR plant 1 includes a core 4 loaded with fuel assemblies 5, and feed-water pipes 9 which are connected to a condenser 8 and a reactor pressure vessel (RPV)3 and where a hollow filter 10 is placed. The placement of the hollow filter 10 restrains the concentration of iron oxide in the feed-water supplied into the RPV 3 to 1×10 -9 mol/kg or less. A ferrite coating is formed on the outside face of a clad tube used for each fuel rod included in the fuel assemblies 5, before the core 4 is loaded with the fuel assemblies. Cobalt oxide in reactor water adhered to the ferrite coating is exfoliated from the outside face of the cladding tube by the electrostatic repulsive force generated between the cobalt oxide and triiron tetraoxide contained in the ferrite coating. For this reason, nonradioactive cobalt is restrained from activation on the outside face of the clad tube and reduces the concentration of radioactive cobalt in the reactor water. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:即使当燃料组件的燃耗程度进一步提高时,提供一种可以进一步减少辐射暴露的减少核电站辐射暴露的方法。 解决方案:BWR设备1包括装载有燃料组件5的核心4和连接到冷凝器8和反应堆压力容器(RPV)3并且其中放置中空过滤器10的给水管9。 中空过滤器10的放置将供给到RPV 3的供给水中的氧化铁的浓度抑制到1×10 -6 SPO / kg以下。 在核心4装载燃料组件之前,在包括在燃料组件5中的每个燃料棒的包覆管的外表面上形成铁氧体涂层。 在铁氧体涂层中包含的钴氧化物和四氧化三铁之间产生的静电排斥力使附着在铁素体涂层上的反应器水中的氧化钴从包覆管的外表面剥离。 因此,在放电管的外表面抑制非放射性钴的活化,降低反应器水中的放射性钴的浓度。 版权所有(C)2011,JPO&INPIT
    • 3. 发明专利
    • Performance evaluation method of recombiner and performance evaluation device thereof
    • 重组器性能评估方法及其性能评估装置
    • JP2012108059A
    • 2012-06-07
    • JP2010258443
    • 2010-11-19
    • Hitachi-Ge Nuclear Energy Ltd日立Geニュークリア・エナジー株式会社
    • IIZUKA HIDEHIROAIZAWA MOTOHIROKAWASAKI TORUMATSUBARA HIROFUMINISHI TAKASHISUGANO SHUICHIYOSHII YASUOKUMAGAI NAOKI
    • G21C17/003
    • PROBLEM TO BE SOLVED: To provide a performance evaluation method of a recombiner capable of accurately evaluating performance degradation of a recombined catalyst where silicon is accumulated.SOLUTION: A performance evaluation method includes: a step (S1) for inserting an X-ray fluorescence spectrometer into a recombiner provided at offgas system piping to measure a fluorescent X-ray emitted from an upper end face of a catalyst layer in the recombiner, and using the fluorescence X-ray to determine each weight of silicon and Pt in D5 attached to a catalyst; a step (S2) for calculating a Si/Pt weight ratio α; a step (S3) for using a correlation between the Si/Pt weight ratio and a performance degradation ratio of the recombiner to obtain the performance degradation ratio β of the recombiner to the calculated Si/Pt weight ratio α; a step for determining whether or not β is less than β0 (β0 is a value set for the performance degradation ratio); a step for, when β is less than β0, continuing using the catalyst in the recombiner; and a step for, when β is not less than β0, replacing the catalyst in the recombiner.
    • 要解决的问题:提供能够精确评估聚集硅的重组催化剂的性能劣化的重组器的性能评价方法。 解决方案:性能评估方法包括:步骤(S1),用于将X射线荧光光谱仪插入到在废气系统管线处提供的重组器中,以测量从催化剂层的上端面发射的荧光X射线 重组器,并使用荧光X射线来确定连接到催化剂的D5中硅和Pt的每个重量; 用于计算Si / Pt重量比α的步骤(S2); 使用Si / Pt重量比与重组器的性能降低率之间的相关性以获得重组器的性能降解率β与计算的Si / Pt重量比α的步骤(S3); 确定β是否小于β0的步骤(β0是针对性能降低率设定的值); 当β小于β0时,在重组器中继续使用催化剂的步骤; 并且当β不小于β0时,代替重组器中的催化剂。 版权所有(C)2012,JPO&INPIT
    • 4. 发明专利
    • Method for monitoring catalytic performance of recombiner
    • 监测重组蛋白催化性能的方法
    • JP2012052807A
    • 2012-03-15
    • JP2010193065
    • 2010-08-31
    • Hitachi-Ge Nuclear Energy Ltd日立Geニュークリア・エナジー株式会社
    • KUMAGAI NAOKIIIZUKA HIDEHIROAIZAWA MOTOHIROKAWASAKI TORUMATSUBARA HIROFUMI
    • G21F9/02B01D53/86C01B5/00
    • PROBLEM TO BE SOLVED: To know performance deterioration of a recombining catalyst before a hydrogen concentration rises at the outflow port of an exhaust gas recombiner to predict the timing required for the replacement of the recombining catalyst.SOLUTION: A method includes: disposing a temperature sensor inside a recombining catalyst contained in an exhaust gas recombiner; comparing temperature measured by the sensor with a temperature predicted from the flow-rate and hydrogen concentration of an exhaust gas flowing in the recombiner or with an exhaust gas temperature measured at an outflow port; monitoring an indication of deterioration of a catalytic performance before the performance of the entire recombining catalyst is deteriorated and the hydrogen flows downstream; and predicting timing required for the replacement of the recombining catalyst and using a time elapsed until detecting an indication of the deterioration of the catalytic performance.
    • 要解决的问题:为了了解在废气重组器的流出口处的氢浓度升高之前的重组催化剂的性能劣化,以预测重组催化剂的替换所需的时间。 解决方案:一种方法包括:将温度传感器置于包含在废气重组器中的重组催化剂内; 将由传感器测量的温度与从重组器中流动的废气的流量和氢浓度预测的温度或在流出口处测量的废气温度进行比较; 监测在整个重组催化剂的性能恶化之前催化性能恶化的指示,并且氢气流向下游; 并预测更换重组催化剂所需的时间,并且使用经过一段时间直到检测到催化性能劣化的指示。 版权所有(C)2012,JPO&INPIT
    • 5. 发明专利
    • Nuclear power plant with boiling water reactor
    • 核电厂与锅炉水反应堆
    • JP2011203035A
    • 2011-10-13
    • JP2010069278
    • 2010-03-25
    • Hitachi-Ge Nuclear Energy Ltd日立Geニュークリア・エナジー株式会社
    • AIZAWA MOTOHIROIIZUKA HIDEHIROYOSHII YASUONISHI TAKASHISUGANO SHUICHIKAWASAKI TORUMATSUBARA HIROFUMI
    • G21D1/02G21C19/303G21F9/02
    • Y02E30/40
    • PROBLEM TO BE SOLVED: To provide a nuclear power plant with a boiling water reactor, capable of improving the performance of a catalyst in a recombiner placed on an off-gas system, even when a gas exhausted from a capacitor contains organic compounds containing silicon atoms.SOLUTION: The recombiner 9 is placed in a pipe on the off-gas system connected to the capacitor. As to the recombiner 9, a catalyst layer 11 filled with a Pt catalyst and a γ alumina layer 12 filled with granular γ alumina are set up in a container 10. The γ alumina layer 12 is located upstream from the catalyst layer 11. A gas containing hydrogen, oxygen and siloxane flows into the catalyst layer 11 from the capacitor to the pipe on the off-gas system. The hydrogen and oxygen contained in the gas are recombined into water by the Pt catalyst in the catalyst layer 11. This recombination decreases the hydrogen concentration in the gas exhausted from the recombiner 9 to an allowable value or lower.
    • 要解决的问题:即使当从电容器排出的气体含有含有硅原子的有机化合物时,为了提供具有沸水反应器的核电厂,能够提高放置在废气系统上的重组器中的催化剂的性能 解决方案:将重组器9放置在连接到电容器的废气系统的管道中。 对于重组器9,将装有Pt催化剂的催化剂层11和填充有粒状γ氧化铝的γ氧化铝层12设置在容器10中.γ氧化铝层12位于催化剂层11的上游。气体 含有氢,氧和硅氧烷的液体从电容器流到催化剂层11至废气系统中的管道。 气体中所含的氢和氧通过催化剂层11中的Pt催化剂重新结合在水中。该复合将从重组器9排出的气体中的氢浓度降低到允许值以下。
    • 9. 发明专利
    • Method for adhering noble metal to component member of nuclear power plant
    • 将金属焊接到核电厂组件成员的方法
    • JP2014044190A
    • 2014-03-13
    • JP2012249031
    • 2012-11-13
    • Hitachi-Ge Nuclear Energy Ltd日立Geニュークリア・エナジー株式会社
    • ITO TAKESHIHOSOKAWA HIDEYUKINAGASE MAKOTOWADA YOICHIISHIDA KAZUNARIAIZAWA MOTOHIRO
    • G21D1/00G21F9/28
    • G21C19/32G21C17/0225G21D1/00G21F9/06G21F9/12G21F9/30Y02E30/40
    • PROBLEM TO BE SOLVED: To provide a method for suppressing adhesion of radionuclide to the component member of a nuclear power plant which can shortens a time required for chemical decontamination of the surface of the component member of the nuclear power plant and the construction of noble metal adhesion on the surface.SOLUTION: When a nuclear power plant is stopped before activating the nuclear power plant, a noble metal injection device is connected to a piping system of the nuclear power plant (S1). Oxidization decontamination, oxidization decontamination agent decomposition, and reduction decontamination of the internal surface of this piping system are executed (S2). After the completion of the reduction decontamination, a part of oxalic acid contained in a reduction decontamination liquid is decomposed, and platinum is injected into the reduction decontamination liquid with a pH of 3.5 or more (S4). When platinum density reaches a set density, a reduction agent is injected, and the reduction decontamination liquid including platinum and the reduction agent is made contact with the internal surface of the piping system (S6). Platinum is adhered to the internal surface of the piping system. The injection of platinum and the reduction agent is stopped (S7), and platinum and the reduction agent are decomposed (S8). After the purification and the waste liquid processing, the nuclear power plant is activated.
    • 要解决的问题:提供一种抑制放射性核素与核电站的部件的粘附的方法,其能够缩短核电站的部件的表面的化学去污所需的时间和贵金属的构造 表面上的附着力。解决方案:核电厂在启动核电厂前停机,将贵金属注入装置连接到核电厂的管道系统(S1)。 执行氧化去污,氧化去污剂分解和该管道系统内表面的还原净化(S2)。 在还原去污完成后,还原去污液中含有的草酸的一部分被分解,并将铂注入pH为3.5以上的还原去污液中(S4)。 当铂密度达到设定密度时,注入还原剂,并且将包含铂和还原剂的还原性去污液与管道系统的内表面接触(S6)。 白金附着在管道系统的内表面。 停止注入铂和还原剂(S7),并将铂和还原剂分解(S8)。 经过净化和废液处理,核电站被激活。
    • 10. 发明专利
    • Treatment method of washing waste liquid
    • 洗涤液的处理方法
    • JP2012071263A
    • 2012-04-12
    • JP2010218740
    • 2010-09-29
    • Hitachi-Ge Nuclear Energy Ltd日立Geニュークリア・エナジー株式会社
    • MATSUBARA HIROFUMIAIZAWA MOTOHIROFUJITA KAZUHIROKAWASAKI TORUHIRAYAMA SATOSHIYUKITA ATSUSHI
    • C02F1/76C02F1/46G21F9/06G21F9/08G21F9/12
    • PROBLEM TO BE SOLVED: To provide a treatment method of a washing waste liquid which can control the foaming at the time of the evaporation concentration of the washing waste liquid containing a nonionic surfactant.SOLUTION: A hypochlorous acid solution in a hypochlorous acid storage tank 46 of a hypochlorous acid supply device 45 is added in the washing waste liquid in a washing waste liquid collection tank 2, containing a nonionic surfactant, a higher fatty acid, a higher alcohol, and sweat (salinity) which have eluted from clothing at the time of washing through a hypochlorous acid supply pipe 47 pass. A foaming ingredient formed with the higher fatty acid or the like within the washing waste liquid is decomposed by hypochlorous acid. The washing waste liquid in which the foaming ingredient has been decomposed is led to a heater 7, and is heated, and is supplied to an evaporator 5. In this way, the wash waste liquid is evaporated and concentrated.
    • 要解决的问题:提供一种能够控制含有非离子表面活性剂的洗涤废液的蒸发浓缩时的发泡时的洗涤废液的处理方法。 解决方案:将次氯酸供给装置45的次氯酸储存箱46中的次氯酸溶液添加到洗涤废液收集槽2的洗涤废液中,洗涤废液收集槽2含有非离子表面活性剂,高级脂肪酸, 在通过次氯酸供给管47洗涤时从衣物洗脱出来的高级酒精和汗液(盐度)通过。 在洗涤废液中与高级脂肪酸等形成的起泡成分被次氯酸分解。 发泡成分已经分解的洗涤废液被导入加热器7,被加热并供给到蒸发器5.以这种方式,洗涤废液被蒸发并浓缩。 版权所有(C)2012,JPO&INPIT