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公开(公告)号：US4820473A
公开(公告)日：1989-04-11
申请号：US795466
申请日：1985-11-06
申请人： Kenya Ohashi , Takashi Honda , Yasumasa Furutani , Eizi Kashimura , Akira Minato , Katsumi Ohsumi
发明人： Kenya Ohashi , Takashi Honda , Yasumasa Furutani , Eizi Kashimura , Akira Minato , Katsumi Ohsumi
CPC分类号： G21C17/0225 , C23C8/10 , C23C8/16 , C23C8/18 , G21F9/004 , Y10S376/90
摘要： The present invention is concerned with a method of reducing radioactivity in a nuclear plant by preliminarily forming oxide films on the surfaces of metallic structural members to be in contact with high-temperature and high-pressure reactor water containing radioactive substances before said metallic members are exposed to said reactor water. The method is characterized by the steps of subjecting said structural members to a first-step oxidation treatment of heating said structural members in an environment of a high temperature, and further subjecting the thus treated structural members to a second step oxidation treatment of heating said treated structural members in an environment having a higher oxidizing capacity than that of said environment in said first-step oxidation treatment to form a denser oxide film than an oxide film obtained in said first step oxidation treatment. According to the present invention, radioactivity in the nuclear plant can be reduced remarkably.
摘要翻译： 本发明涉及通过在金属构件暴露之前预先形成金属结构构件的表面上的氧化物膜以与含有放射性物质的高温高压反应器水接触的方法来降低核电厂中的放射性的方法 到所述反应器水。 该方法的特征在于：在高温环境中对所述结构部件进行第一步氧化处理以加热所述结构部件，并进一步对经过处理的结构部件进行第二阶段氧化处理，加热所述处理过的 在所述第一步氧化处理中，氧化能力高于所述环境的环境中的结构体，以形成比在所述第一步骤氧化处理中获得的氧化膜更致密的氧化膜。 根据本发明，可以显着降低核电厂的放射性。
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2.发明授权
公开(公告)号：US4828790A
公开(公告)日：1989-05-09
申请号：US117492
申请日：1987-11-06
申请人： Takashi Honda , Yasumasa Furutani , Kenya Ohashi , Eiji Kashimura , Akira Minato , Katsumi Ohsumi , Hisao Itou
发明人： Takashi Honda , Yasumasa Furutani , Kenya Ohashi , Eiji Kashimura , Akira Minato , Katsumi Ohsumi , Hisao Itou
IPC分类号： G21F9/00
摘要： A nuclear power plant wherein surfaces of components contacting with nuclear reactor cooling water containing radioactive substances are coated with an oxide film, preferably being charged positively and/or containing chromium in an amount of 12% by weight or more, is prevented effectively from the deposition of radioactive substances thereon.
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3.发明授权
公开(公告)号：US4564499A
公开(公告)日：1986-01-14
申请号：US666033
申请日：1984-10-29
CPC分类号： C23F15/00
摘要： A method of inhibiting corrosion of carbon steel piping of condensate and feed water systems in a power generating plant, characterized by continuing the water in said piping to flow after also said plant has been shut down until it is restarted up and by keeping the specific electric conductivity of flowing water at 0.5 .mu.S/cm or less.
摘要翻译： 一种抑制发电厂冷凝水和给水系统碳钢管道腐蚀的方法，其特征在于，所述管道中的水在所述设备已被关闭之后继续流动，直到其重新启动并且通过保持特定的电 流动水的电导率为0.5μS/ cm以下。
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4.发明授权
公开(公告)号：US4722823A
公开(公告)日：1988-02-02
申请号：US525889
申请日：1983-08-24
IPC分类号： G21D1/00 , G21C13/087 , G21C13/10 , G21F9/00 , G21C11/00
CPC分类号： G21C13/087 , G21C13/10 , Y02E30/40
摘要： A nuclear power plant using a structural material consisting of metal which comes into contact with a liquid in which radioactive substances are dissolved has a function to suppress the deposition of the radioactive substances. In this function, metal elements constituting the surface layer of the structural material which comes into contact with the liquid are oxidized by injecting oxidizing agents from outside, thereby preliminarily producing an oxide film. The oxidizing agents comprise at least one kind selected from the group consisting of oxygen, hydrogen peroxide, chromate, nitrite, molybdate, tungstate and ferrate. Particularly, by suppressing the deposition of radioactive substances on a stainless steel, the dose rate of exposure of workers is effectively reduced.
摘要翻译： 使用与溶解有放射性物质的液体接触的金属构成的结构材料的核电站具有抑制放射性物质沉积的功能。 在该功能中，构成与液体接触的结构材料的表面层的金属元素通过从外部注入氧化剂而被氧化，从而预先生成氧化膜。 氧化剂包括选自氧，过氧化氢，铬酸盐，亚硝酸盐，钼酸盐，钨酸盐和高铁酸盐中的至少一种。 特别是通过抑制放射性物质在不锈钢上的沉积，有效地降低了工作人员的接触剂量。
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公开(公告)号：US4544462A
公开(公告)日：1985-10-01
申请号：US620335
申请日：1984-06-13
申请人： Yasumasa Furutani , Yasuo Hira , Takashi Hasegawa , Akira Minato , Saburo Shoji , Osao Sumita
发明人： Yasumasa Furutani , Yasuo Hira , Takashi Hasegawa , Akira Minato , Saburo Shoji , Osao Sumita
摘要： The present invention provides a process for removing a metal surface oxide from a metallic substance by contacting the metal surface oxide layer with a deterging liquid to introduce electrons into the metal surface oxide in contact with the deterging liquid to dissolve the metal surface oxide, which process is characterized in that a metal piece or carbon piece is immersed in the deterging liquid into which gaseous hydrogen has been introduced and the metal piece or carbon piece is electrically connected to the metal surface oxide on the metallic substance. The metal piece is preferably platinum or vanadium. A preferred deterging liquid is one having a pH of about 5 to 7 and containing a complexing agent.
摘要翻译： 本发明提供了一种通过使金属表面氧化物层与洗涤液接触而将金属表面氧化物从金属表面氧化物中除去以将电子引入与洗涤液接触的金属表面氧化物中以溶解金属表面氧化物的方法，该方法 其特征在于，金属片或碳片浸渍在已经引入气态氢的洗涤液中，金属片或碳片与金属物质上的金属表面氧化物电连接。 金属片优选为铂或钒。 优选的洗涤液是pH为约5至7并且含有络合剂的洗涤液。
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公开(公告)号：US4514270A
公开(公告)日：1985-04-30
申请号：US423195
申请日：1982-09-24
申请人： Yasumasa Furutani , Yasuo Hira , Takashi Hasegawa , Akira Minato , Osao Sumita , Hisao Itow
发明人： Yasumasa Furutani , Yasuo Hira , Takashi Hasegawa , Akira Minato , Osao Sumita , Hisao Itow
摘要： A cleaning fluid such as a chemical decontamination solution originally containing one or more cleaning or decontamination reagents in low concentrations and deteriorated after a cleaning or decontamination treatment step by containing metal oxides therein can be regenerated by introducing such a deteriorated cleaning fluid into an electrolytic cell, passing a direct current through said cleaning fluid between two electrodes, and removing said metal oxides by depositing dissolved metal ions on the cathode as metals from the cleaning fluid.
摘要翻译： 通过将这种劣化的清洗液引入电解池中，可以再生清洗液，例如最初含有一种或多种低浓度的清洁或去污试剂，并且在清洗或去污处理步骤中被包含金属氧化物之后劣化的化学去污溶液， 在两个电极之间通过所述清洁流体的直流电流，并且通过将来自清洁流体的金属溶解的金属离子沉积在阴极上来去除所述金属氧化物。
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7.发明授权Apparatus for removing iron oxides from water in feed water system of a power plant 失效用于在发电厂给水系统中从水中除去氧化铁的设备
公开(公告)号：US4941973A
公开(公告)日：1990-07-17
申请号：US213142
申请日：1988-06-29
申请人： Mamoru Suzuki , Katsumi Suzuki , Kazutoshi Itoh , Akira Minato , Tsuyoshi Kambayashi , Yoshiyuki Hoshino
发明人： Mamoru Suzuki , Katsumi Suzuki , Kazutoshi Itoh , Akira Minato , Tsuyoshi Kambayashi , Yoshiyuki Hoshino
CPC分类号： F22D11/006 , B03C1/28 , C02F1/488
摘要： Magnetic attracting means, especially a permanent magnet, is disposed in a high pressure feed water heater drain pipe line or air separator water tank of feed water and condensed water systems in a thermoelectric power plant. By adoption of this arrangement, iron oxides contained in water in the feed water and condensed water systems can effectively be attracted and removed by this magnetic attracting means.
摘要翻译： 磁吸引装置，特别是永久磁铁，设置在热电厂的给水和冷凝水系统的高压给水加热器排水管线或空气分离器水箱中。 通过采用这种布置，供给水和冷凝水系统中的水中所含的氧化铁可以通过该磁吸引装置有效吸引和去除。
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公开(公告)号：US4398399A
公开(公告)日：1983-08-16
申请号：US332181
申请日：1981-12-18
CPC分类号： F25B15/008 , F25B15/06 , F25B43/046 , Y02B30/62
摘要： In a hermetically circulating, absorption type refrigerator based on a closed circulation system of constituent members comprised of a successive communication of a regenerator, a condenser, an evaporator, an absorber and a heat exchanger, refrigeration being produced by repetitions of concentration, refrigerant dilution, and heat exchange of an aqueous concentrated lithium bromide solution sealed in the circulation system, a hydrogen gas generated in the refrigerator is continuously converted to water, condensed and removed or returned to the refrigerator as a refrigerant. The pressure increase in the refrigerator can be prevented, and a high refrigerating performance can be continuously maintained without any special maintenance.
摘要翻译： 在基于密闭循环系统的气密循环式制冷机中，构成部件包括再生器，冷凝器，蒸发器，吸收器和热交换器的连续连通，通过重复浓缩，制冷剂稀释， 并且密封在循环系统中的浓缩溴化锂水溶液进行热交换，在冰箱中产生的氢气被连续地转化为水，冷凝和除去或作为制冷剂返回到冰箱。 可以防止冰箱中的压力增加，并且不需要特别的维护就能够连续地维持高的制冷性能。
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公开(公告)号：US4311024A
公开(公告)日：1982-01-19
申请号：US104469
申请日：1979-12-17
CPC分类号： F25B47/003 , F25B15/008 , F25B30/04 , Y02B30/62
摘要： A hermetically circulating, absorption type refrigerator based on a closed circulation system comprised of a successive communication of a regenerator, a condenser, an evaporator, an absorber and a heat exchanger, parts or the whole of said constituent members in contact with an absorbing solution being comprised of a copper material selected from copper and copper alloy, and refrigeration being produced by repetitions of concentration, refrigerant dilution and heat exchange of an aqueous lithium bromide solution sealed in the circulation system is characterized in that the absorbing solution is an aqueous lithium bromide solution containing (a) a nitrate and (b) at least one triazole compound selected from benzotriazole and tolyltriazole, and has a particularly distinguished corrosion resistance.
摘要翻译： 一种基于密闭循环系统的气密循环吸收型冰箱，包括再生器，冷凝器，蒸发器，吸收器和热交换器的连续连通，与吸收溶液接触的部分或整个所述构成部件 由选自铜和铜合金的铜材组成，并且通过重复密封在循环系统中的溴化锂水溶液的浓缩，制冷剂稀释和热交换而制造的制冷剂的特征在于，吸收溶液是溴化锂水溶液 含有（a）硝酸盐和（b）至少一种选自苯并三唑和甲苯基三唑的三唑化合物，并且具有特别显着的耐腐蚀性。
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公开(公告)号：US4505760A
公开(公告)日：1985-03-19
申请号：US450449
申请日：1982-12-16
申请人： Masahiko Itoh , Heihatiro Midorikawa , Akira Minato , Mituru Kubo , Takehiko Ito , Kiichiro Katayama
发明人： Masahiko Itoh , Heihatiro Midorikawa , Akira Minato , Mituru Kubo , Takehiko Ito , Kiichiro Katayama
CPC分类号： C23C2/02 , Y10T428/12604 , Y10T428/12611
摘要： A process for the partial hot dipping of a long steel strip is disclosed which comprises forming an oxidation-inhibiting film, oxygen-impermeable and thermally stable in a hot-dipping bath, which film is produced by the chemical reaction of an iron content in the steel strip with an oxidation inhibiting film-forming agent, such as an inorganic phosphoric acid compound, on a predetermined area of the steel strip surface, forming, as required, an intermediate layer comprising an inorganic binder, such as water glass, on the resulting film, forming a carbon-containing, plateing-stopping film as a top coat on the intermediate layer, and hot dipping the steel strip.
摘要翻译： 公开了一种长钢带的部分热浸的方法，其包括在热浸浴中形成氧化抑制膜，不透氧和热稳定，该膜是通过在 在钢带表面的预定区域上形成诸如无机磷酸化合物的氧化抑制膜形成剂的钢带，根据需要在所得到的含水无机粘合剂如水玻璃上形成中间层 膜，在中间层上形成作为顶涂层的含碳的止版膜，并且热浸镀钢带。
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