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1. 发明专利

JPH03267797A NUCLEAR REACTOR STOPPING METHOD 失效
公开(公告)号：JPH03267797A
公开(公告)日：1991-11-28
申请号：JP6400690
申请日：1990-03-16
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： NISHINO YOSHITAKA , SAWA TOSHIO , MATSUMOTO TAKAYUKI , OSUMI KATSUMI , USUI NAOSHI
IPC分类号： G21C19/307 , G21F9/28
摘要： PURPOSE:To reduce the radiation exposure of periodic inspection operators greatly by injecting at least one of hydrogen gas, a complexing agent, and a reducing agent into primary cooling water before cooling, and dissolving and removing radioactive materials. CONSTITUTION:Steam generated by a nuclear reactor 1 is condensed 3 into water after a turbine 2 is rotated, sent to a condensate filter 5 by a condensate pump 4, and passed through a condensate demineralizer 6 to remove an iron clad and impurity gold ions from it. Then the condensate is fed to the nuclear reactor 1 by a feed water pump 7 through a feed water heater 8, part of it flows in a nuclear reactor water recirculation system, and further part of it is purified by a reactor water purifying device 10 and circulated to the nuclear reactor 1. At this time, an injecting device 12 for the hydrogen gas, complexing agent, or reducing agent is installed in the nuclear reactor water recirculation system and when the nuclear reactor 1 is at a stop, the hydrogen gas, complexing agent, or reducing agent is injected into the primary cooling water. Consequently, radioactive ions generated by the oxidized film dissolution of the nuclear reactor water recirculation system and purification system are removed by the device from the primary cooling water.

2. 发明专利

JPS58117888A BIPOLAR TYPE ELECTROLYTIC CELL 失效
公开(公告)号：JPS58117888A
公开(公告)日：1983-07-13
申请号：JP18882
申请日：1982-01-06
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SAWA TOSHIO , MATSUMOTO TAKAYUKI , TAKAHASHI SANKICHI , MATSUMOTO YOSHIO
IPC分类号： G21F9/06 , C25C1/22 , C25C7/00 , G21F9/04
摘要： PURPOSE:To provide a titled electrolytic cell which separates metallic ions having radioactivity selectively from regenerated ion exchanging liquid by providing >=2 sheets of bipolar plates produced by using a conductive material which does not dissolve even when bipolarized as a base plate and mounting a conductive and exchangeable material having large surface area in the cathode part of said plate between supporting electrodes. CONSTITUTION:The above-described electrolytic cell is disposed with an anode plate 1 and a cathode 2 for supporting on the right and left. Plural sheets of bipolar plates each produced by bringing carbon fibers into contact with the cathode part 4 of a base plate 3 such as a graphite plate which is conductive and does not dissolve even when anodized are installed between said anode and cathode. Such bipolar plates are installed at equal interval so as to avoid contacting with each other, and the materials such as carbon fibers that have conductivity, have large surface areas and provide large reducing potential of respective metallic ions are brought into contact with the one side of the base plates 3 to serve as cathode. In the above-mentioned constitution, waste liquid 6 is supplied from the upper part of the electrolytic cell, and the metallic ions having radioactivity are reduced and are electrolytically deposited with the respective carbon fiber members 4 in the electrode arranging part, whereby said metallic ions are removed.

3. 发明专利

JPS63267411A METHOD FOR ADJUSTING PRECOAT MATERIAL OF PRECOAT TYPE FILTER 失效
公开(公告)号：JPS63267411A
公开(公告)日：1988-11-04
申请号：JP9983087
申请日：1987-04-24
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： ADACHI TETSURO , SAWA TOSHIO , OSUMI KATSUMI , AIZAWA MOTOHIRO , MATSUMOTO TAKAYUKI
IPC分类号： B01D37/02 , B01J20/26 , B01J47/00 , G21C19/30
摘要： PURPOSE:To properly adjust the size of resin floc in the case of regulating a precoat material by adding a floc adjusting agent to any one of anion exchange resin and cation exchange resin before mixing both of the two. CONSTITUTION:Any one of powdery anion exchange resin and cation exchange resin is introduced into a precoat tank and agitated and then a floc adjustor is injected into the precoat tank from a floc adjustor tank. The regulation of a precoat material of a precoat type filter is performed by both an adsorbing process of the floc adjusting agent wherein the floc adjusting agent is added to the previously introduced resin and the mixture is mixed and agitated to adsorb the floc adjusting agent and a mixing process of resin wherein the other resin is introduced into the resin adsorbed with the floc adjusting agent and the mixture is agitated to form resin floc. As a result, even when carboxylic group type cation exchange resin is used, the size of resin floc is properly regulated and thereby the precoat material of the precoat type filter can be adjusted.

4. 发明专利

DE60030063T2 未知
公开(公告)号：DE60030063T2
公开(公告)日：2007-01-04
申请号：DE60030063
申请日：2000-03-17
申请人： JFE STEEL CORP , HITACHI LTD
发明人： YOSHIMURA TAKASHI , AMMA HIROYUKI , FUJINAGA MASASHI , IIJIMA MITSUMASA , HATAI YASUO , MATSUMOTO TAKAYUKI , UENOSONO SATOSHI , UNAMI SHIGERU
IPC分类号： B22F3/02 , C22C33/02
摘要： In a preliminary molding step 1, a metallic powder mixture 7 obtained by blending an iron-based metal powder 7a with graphite 7b such that the graphite is present in an amount of preferably not less than 0.1% by weight, more preferably not less than 0.3% by weight, is compacted into a preform 8 having a density of not less than 7.3g/cm . In a provisional sintering step 2, the preform 8 is provisionally sintered at a predetermined temperature to form a metallic powder-molded body 9 having a structure in which the graphite remains along a grain boundary of the metal powder. In a re-compaction step 3, the metallic powder-molded body 9 is re-compacted into a re-compacted body 10. In a re-sintering step 4, the re-compacted body 10 is re-sintered to obtain a sintered body 11. In a heat treatment step 5, the sintered body 11 is heat-treated to obtain a heat-treated sintered body 11. Accordingly, in accordance with the present invention, there are provided a re-compacted body produced from a metallic powder-molded body having an excellent deformability which is suitably applied to the production of machine parts exhibiting high mechanical properties due to the use of sintered metal, and a sintered body produced from the re-compacted body as well as a process for the production thereof.

5. 发明专利

DE60030063D1 未知
公开(公告)号：DE60030063D1
公开(公告)日：2006-09-28
申请号：DE60030063
申请日：2000-03-17
申请人： JFE STEEL CORP , HITACHI LTD
发明人： YOSHIMURA TAKASHI , AMMA HIROYUKI , FUJINAGA MASASHI , IIJIMA MITSUMASA , HATAI YASUO , MATSUMOTO TAKAYUKI , UENOSONO SATOSHI , UNAMI SHIGERU
IPC分类号： B22F3/02 , C22C33/02
摘要： In a preliminary molding step 1, a metallic powder mixture 7 obtained by blending an iron-based metal powder 7a with graphite 7b such that the graphite is present in an amount of preferably not less than 0.1% by weight, more preferably not less than 0.3% by weight, is compacted into a preform 8 having a density of not less than 7.3g/cm . In a provisional sintering step 2, the preform 8 is provisionally sintered at a predetermined temperature to form a metallic powder-molded body 9 having a structure in which the graphite remains along a grain boundary of the metal powder. In a re-compaction step 3, the metallic powder-molded body 9 is re-compacted into a re-compacted body 10. In a re-sintering step 4, the re-compacted body 10 is re-sintered to obtain a sintered body 11. In a heat treatment step 5, the sintered body 11 is heat-treated to obtain a heat-treated sintered body 11. Accordingly, in accordance with the present invention, there are provided a re-compacted body produced from a metallic powder-molded body having an excellent deformability which is suitably applied to the production of machine parts exhibiting high mechanical properties due to the use of sintered metal, and a sintered body produced from the re-compacted body as well as a process for the production thereof.

6. 发明专利

JP2008285680A Apparatus for synthesizing polymer 有权
标题翻译：用于合成聚合物的装置
公开(公告)号：JP2008285680A
公开(公告)日：2008-11-27
申请号：JP2008176417
申请日：2008-07-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MATSUO TOSHIAKI , MATSUMOTO TAKAYUKI , OKAMOTO SHIGEYASU
IPC分类号： C08G85/00 , C08F2/01 , C08G63/78
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for synthesizing polymers from a raw material in a molten state by which high quality polymers can be obtained.
SOLUTION: The operation procedure of this synthesizing apparatus is as follows. A lactide fed from a lactide feeding apparatus 1 is heated to be molten in a lactide melting apparatus 2 and to the molten lactide, a catalyst is added in a catalyst feeding apparatus 3. The molten lactide is fed through a lactide feeding apparatus 4 to a horizontal reaction vessel 5 and in the vessel 5, a polymerization reaction of the lactide is progressed by a head pressure difference while the lactide flows. The reaction liquid discharged from the vessel 5 is fed into an upper part of a vertical reaction vessel 6 and flows through the inside thereof by the gravity to thereby progress the polymerization reaction. Thereafter the reaction liquid is transported into a remained lactide removing apparatus 7 to remove unreacted lactide and is discharged out of the apparatus 7.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种从可以获得高质量聚合物的熔融状态的原料合成聚合物的装置。解决方案：该合成装置的操作过程如下。将从丙交酯供给装置1进料的丙交酯在丙交酯熔化装置2中熔融并熔融，在催化剂供给装置3中加入催化剂。将熔融丙交酯通过丙交酯供给装置4供给到水平反应容器5中，并且在容器5中，当丙交酯流动时，丙交酯的聚合反应通过头部压力差进行。将从容器5排出的反应液供给到立式反应容器6的上部，通过重力流过其内部，从而进行聚合反应。然后将反应液输送到残留的丙交酯去除装置7中以除去未反应的丙交酯，并将其排出装置7.版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2006242636A Measuring and controlling method of liquid level in polymer synthesizer and device for the same 有权
标题翻译：聚合物合成器中液位的测量和控制方法及其设备
公开(公告)号：JP2006242636A
公开(公告)日：2006-09-14
申请号：JP2005056294
申请日：2005-03-01
申请人： Hitachi Ltd , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社日立製作所
发明人： OKAMOTO SHIGEYASU , MATSUO TOSHIAKI , MIZUMOTO MAMORU , MATSUMOTO TAKAYUKI , OBARA HITOMI , SAWA SEIJI , FUJII YASUHIRO , KAWAMOTO TATSUJI , YATSUGI TAKASHI
IPC分类号： G01F17/00 , C08F2/01 , C08G63/78 , G01F22/02 , G01F23/18
摘要： PROBLEM TO BE SOLVED: To provide a method for safely and easily measuring and/or controlling the liquid level in a reaction tank in advance systhesizing polymer from materials in molten state.
SOLUTION: By opening a valve 22, gas is supplied to a tentative gas receiver tank 18 from a gas supplier device 20. When the gas pressure reaches a specific value, the valve 22 is closed and a pulse valve 17 is opened for a specific time to discharge through a discharge outlet 24 into a vertical reaction tank 13. Pressure rise is measured with a pressure meter 16. The pressure is converted in a controller 21 to an average height of the liquid level, which is compared with the set value and the flow rate of a material supply pump 14 is controlled.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于安全且容易地测量和/或控制反应罐中的液位的方法，其预先从熔融状态的材料中聚合聚合物。解决方案：通过打开阀门22，气体从气体供应器装置20供应到临时储气罐18.当气体压力达到特定值时，阀22关闭，并且脉冲阀17打开，通过排出口24排放到垂直反应槽13中的特定时间。用压力计16测量压力上升。将控制器21中的压力转换成液面的平均高度，其与该组相比较值和材料供应泵14的流量被控制。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2005255751A Lactide synthesis method and lactide synthesis apparatus 有权
标题翻译： LACTIDE合成方法和乳液合成装置
公开(公告)号：JP2005255751A
公开(公告)日：2005-09-22
申请号：JP2004066625
申请日：2004-03-10
申请人： Hitachi Ltd , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社日立製作所
发明人： MATSUO TOSHIAKI , MATSUMOTO TAKAYUKI , OKAMOTO SHIGEYASU , OBARA HITOMI , SAWA SEIJI , FUJII YASUHIRO , KAWAMOTO TATSUJI , YATSUGI TAKASHI
IPC分类号： C08G63/78 , B01J19/18 , C07C67/08 , C08G63/08 , C08L101/16
CPC分类号： B01J19/1862 , B01J2219/00031 , B01J2219/0004 , B01J2219/00094 , B01J2219/00135 , B01J2219/002 , C07D319/12 , C08G63/08
摘要： PROBLEM TO BE SOLVED: To reduce the water concentration in a lactide in a lactide synthesis apparatus or process. SOLUTION: After a lactic acid oligomer discharge valve 10 is closed, lactic acid is transferred to a lactic acid condensation apparatus 2. The lactic acid is concentrated and condensed by heating in a vacuum, and the formed water is evaporated. Lactic acid, a lactic acid oligomer, and lactide are removed from or returned to the formed gas by means of a condensation apparatus 11. The water concentration of the gas is measured with a pressure measurement device 12. After confirming that the water concentration is not higher than a specified value, the lactic acid oligomer discharge valve 10 is opened to transfer the lactic acid oligomer. The oligomer is depolymerized to form gaseous lactide, which is then condensed and recovered. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了降低丙交酯合成装置或方法中的丙交酯中的水分浓度。解决方案：在关闭乳酸低聚物排出阀10之后，将乳酸转移到乳酸冷凝装置2中。通过在真空中加热浓缩和浓缩乳酸，蒸发形成的水。乳酸，乳酸低聚物和丙交酯通过冷凝装置11除去或返回到形成的气体中。用压力测量装置12测量气体的水浓度。确认水浓度不是高于规定值时，打开乳酸低聚物排出阀10以转移乳酸低聚物。将低聚物解聚形成气态丙交酯，然后冷凝并回收。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2000193789A PROCESSING METHOD AND PROCESSING DEVICE FOR RADIOACTIVE WASTE LIQUID INCLUDING SURFACTANT 失效
公开(公告)号：JP2000193789A
公开(公告)日：2000-07-14
申请号：JP37280798
申请日：1998-12-28
申请人： HITACHI LTD
发明人： MATSUO TOSHIAKI , NISHI TAKASHI , MATSUMOTO TAKAYUKI , MATSUDA MASAMI , YUKITA ATSUSHI
IPC分类号： C02F1/58 , B01D17/12 , C02F1/72 , C02F1/78 , G21F9/04 , G21F9/06 , G21F9/08 , G21F9/28
摘要： PROBLEM TO BE SOLVED: To drastically suppress the generation of secondary waste and increase the processing speed of decomposing organism in the case using ozone. SOLUTION: Radioactive washing waste liquid is supplied to a waste liquid heating tank 16. Hydrogen peroxide is supplied from a hydrogen peroxide tank 22 and alkali solution is supplied from an alkali solution tank 25 to the waste liquid heating tank 16. The pH of the radioactive washing waste liquid is controlled to 7 or more by the alkali solution. The radioactive washing waste liquid is heated to 50 deg.C or higher by a heating device 4. The heated radioactive washing waste liquid is introduced to aerators 2A and 2B. Ozone is supplied from an ozone generator 1 and an ozone gas discharge piece 3A to the aerator 2A. Ozone exhausted from the aerator 2A is introduced from the ozone gas discharge piece 3B to an aerator 2B. The liquid is heated over 50 deg.C under the existence of hydrogen peroxide, soluble quantity of ozone to the radioactive washing waste liquid increases and the producing quantity of hydroxyradical increased.

10. 发明专利

JPH11207151A SEPARATION OF MINERALS IN SOLUTION 失效
公开(公告)号：JPH11207151A
公开(公告)日：1999-08-03
申请号：JP1228398
申请日：1998-01-26
申请人： HITACHI LTD , NITTA KEIJI
发明人： ODA MASASHI , KUROKAWA HIDEAKI , MATSUMOTO TAKAYUKI , KONDO MASAYOSHI , SUGAWARA SATOSHI , NITTA KEIJI
IPC分类号： B01D61/44 , B01D61/52 , C02F1/469
摘要： PROBLEM TO BE SOLVED: To reduce the amount of Na ions and Cl ions remaining in solution containing univalent ions and polyvalent ions. SOLUTION: Solution 1 to be separated which is wet oxidizing treated urine contains univalent ions such as Na, K, and Cl and polyvalent ions such as Ca, Mg, SO4 , and PO4 as mineral components. The solution to be separated 1 is mixed with solid or aq. solution of KCl 2 in a mixing tank 3. The solution 1 in the mixing tank 3 is fed to an electrodialysis device 4, and by electrodialysis, it is separated into demineralizecl liquid 5 from which univalent ions have been removed and univalent ion-concentrated liquid 6. When KCl 2 is added to increase the amount of K remaining in the demineralized liquid, the limiting concentration of univalent cations at which polyvalent ions starts to permeate can be lowered, compared with that before KCl addition. In this way, the remaining amount of Na after electrodialysis is reduced, and in order to satisfy electric neutral conditions in the solution, Cl ions are reduced.

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