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1. 发明专利

JPH10197686A REACTOR POWER PLANT AND ITS OPERATION METHOD 失效
公开(公告)号：JPH10197686A
公开(公告)日：1998-07-31
申请号：JP218697
申请日：1997-01-09
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KAZAMA SEIICHI , KOBAYASHI MASATO , SHIOZAWA YOSHIHIRO
IPC分类号： G21D1/02 , G21D3/00 , G21F9/06
摘要： PROBLEM TO BE SOLVED: To suppress to minimum the generation quantity of waste of filtering assistant and efficiently purify condensate. SOLUTION: In a condensate filtering device 6, A filtering tower group 12 having pleats type filter element and B filtering tower group 14 having hollow fiber membrane type element are connected in parallel to each other. By separately using the towers of A filtering tower group 12 and B filtering tower group 14 before startup of plant, the condensate condensed in a condenser 5 can be washed desirably and insoluble impurity and soluble impurity can be removed better than that using only powder resin precoat type or only hollow fiber membrane type so that condensate before startup of the plant can be efficiently washed. Therefore, the condensate demineralization device can surely be prolonged in life and reduction of operation cost can be planned that much.

2. 发明专利

JPH0699042A HOLLOW FIBER MEMBRANE FILTERING DEVICE 失效
公开(公告)号：JPH0699042A
公开(公告)日：1994-04-12
申请号：JP25292492
申请日：1992-09-22
申请人： HITACHI LTD , HITACHI ENG CO LTD , HITACHI KYOWA KOGYO KK
发明人： KOBAYASHI MASATO , KAZAMA SEIICHI , SHIOZAWA YOSHIHIRO , KURITA TAKETOSHI
IPC分类号： B01D63/02 , B01D65/02 , C02F1/44
摘要： PURPOSE:To provide an improved hollow fiber membrane filtering device capable of easily executing the maintenance working such as the exchange of a hollow fiber membrane module, completely preventing the flow-in of air into a hollow fiber membrane hollow part at the time of back washing by a high pressure back washing water, executing efficient back washing and adequately keeping filtering function. CONSTITUTION:A partition panel 13 is provide at the bottom of a vessel composed of a vessel 4 and a body vessel 3, the hollow fiber membrane module is uprighted on the partition panel 13, an original liquid inlet pipe led from the bottom of the vessel is opened on the upper face of the partition panel 13, an outlet region for treated water from the hollow fiber membrane module is formed by the partition panel 13 and the bottom of the body vessel 3, and the back washing is executed by feeding the high pressure back washing water from a pressurized water tank 8 to the treated water outlet region.

3. 发明专利

JPS60249095A METHOD OF DECONTAMINATING STAGNATION SECTION 失效
公开(公告)号：JPS60249095A
公开(公告)日：1985-12-09
申请号：JP10459484
申请日：1984-05-25
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SUMIDA NOBUO , ITOU HISAO , SAITOU TAKASHI , KOBAYASHI MASATO
IPC分类号： C23G1/00 , G21F9/00 , G21F9/28 , G21F9/30

4. 发明专利

JPS5985899A METHOD FOR REMOVING SURFACE METALLIC OXIDE ELECTROLYTICALLY 失效
公开(公告)号：JPS5985899A
公开(公告)日：1984-05-17
申请号：JP19639682
申请日：1982-11-09
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOBAYASHI MASATO , SUMIDA NOBUO , ITOU HISAO , SAITOU TAKASHI
IPC分类号： G21F9/28 , C25F1/04 , C25F1/06 , G21D1/02 , G21F9/00
摘要： PURPOSE:To remove electrolytically the surface oxide of an object to be cleaned with high electric current efficiency by moving a counter electrode which is smaller as compared to the surface of the object to be cleaned along the surface at the prescribed space maintained from said surface during the electrolytic reduction of the surface metallic oxide of the object to be cleaned. CONSTITUTION:An object 4 to be cleaned is dipped in the liquid in an electrolytic cell 2, and DC current is supplied from an external power source between the surface metallic oxide of the object 4 and the liquid with said object as a cathode and a counter electrode 3 as an anode. The surface metallic oxide is electrolytically reduced and is eluted into the liquid. A counter electrode 3 for electrolysis is supported in a counter electrode 3 for electrolysis is supported in a counter electrode cover 6 by means of a holder 7. The counter electrode is moved while it is glided on the surface of the object 4, so that the electrode 3 can be moved at the specified distance maintained from the surface of the object 4. A reference electrode 8 is installed in a cover 6 and the potential of the object 4 is set at an adequate value by using a potentiometer 9.

5. 发明专利

JPS58180284A Cell for regeneration of reducible solvent and chemical decontamination method using said cell 失效
标题翻译：用于再生可再生溶剂的细胞和使用固体细胞的化学去除方法
公开(公告)号：JPS58180284A
公开(公告)日：1983-10-21
申请号：JP6229882
申请日：1982-04-16
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： SUMIDA NOBUO , ITOU HISAO , SAITOU TAKASHI , KOBAYASHI MASATO , FURUYA YASUMASA
IPC分类号： C02F1/469 , C02F1/46 , G21C19/30 , G21C19/307 , G21F9/00 , G21F9/06 , G21F9/28
摘要： PURPOSE: To obtain a cell for regeneration of a reducible soln. having excellent regeneration efficiency, by disposing a cathode made of a high hydrogen voltage conductive sealing material so as to contact with the surface of diaphragm which segments an anode chamber and a cathode chamber.
CONSTITUTION: An electrochemical cell 3 is divided to an anode chamber 31 and a cathode chamber 32, and a diaphragm 33 adhered tightly with a porous cathode electrode 8 and an anode electrode 9 on a cation exchange membrance 7 is incorporated between the chambers 31 and 32. An electric power source 10 is connected to the electrodes 8, 9. A deareation tank 11 is provided to remove the dissolved oxygen in decontaminating liquid in addition to the above for the purpose of improving reduction efficiency. The liquid is bubbled in the tank 11 by using a gas cylinder 12. The liquid to be decontaminated is fed through a feed port 13 into the decontamination device. The eluate of the decontamination stage is removed with a filtering and desalting device 14.
COPYRIGHT: (C)1983,JPO&Japio
摘要翻译：目的：获得可还原溶胶再生细胞。通过将由高氢压导电密封材料构成的阴极配置成与分隔阳极室和阴极室的隔膜的表面接触而具有优异的再生效率。构成：电化学电池3被分成阳极室31和阴极室32，并且在室31和32之间并入有在多孔阴极8和阳极交换膜7上的阳极9紧密粘合的隔膜33 电源10连接到电极8,9上。为了提高还原效率，除了上述以外，还提供除气槽11除去去污液体中的溶解氧。通过使用气瓶12将液体鼓泡在罐11中。待净化的液体通过进料口13进入去污装置。去污阶段的洗脱液用过滤和脱盐装置14去除。

6. 发明专利

JPH08122490A DRIVE CONTROL METHOD OF CONDENSATE FILTRATION DEVICE 失效
公开(公告)号：JPH08122490A
公开(公告)日：1996-05-17
申请号：JP25785294
申请日：1994-10-24
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： OGAWA TAKEO , KOBAYASHI MASATO , KAZAMA SEIICHI
IPC分类号： G21D1/02 , B01D63/04 , C02F1/44 , G21D3/00
摘要： PURPOSE: To provide a condensate filtration device capable of facilitating the utilizing of a by-pass of a part of the device and of facilitating the adjustment of a period of water-passing through a hollow fiber membrane and a device designing differential pressure by utilizing the by-pass of the part of the device. CONSTITUTION: In a double condensate purification system consisting of a condensate filtration device 3 and a condensate demineralizer 4, a plurality of filters 7 are arranged in parallel between an entrance header 5 and an exit header 6 and a differential manometer 12 and an equal differential pressure control valve 13 are provided to each of the series of the filters 7. Differential pressures of the filters 7 are different from each other in accordance with pollution degree of a hollow fiber membrane in a tower. However, an opening extent of the equal differential pressure control valve 13 is adjusted in accordance with a signal from the differential manometer 12 to apply a differential pressure so that differential pressure of each of the series of the filters is controlled at a constant level.

7. 发明专利

JPH054029A HOLLOW YARN MEMBRANE MODULE 失效
公开(公告)号：JPH054029A
公开(公告)日：1993-01-14
申请号：JP15805891
申请日：1991-06-28
申请人： HITACHI LTD , HITACHI ENG CO LTD , HITACHI KYOWA KOGYO KK
发明人： KOBAYASHI MASATO , KAZAMA SEIICHI , SHIOZAWA YOSHIHIRO , OGASA KAZUSHI
IPC分类号： B01D63/04 , B01D65/02
摘要： PURPOSE:To improve the handling quality of the hollow yarn membrane module and to improve its performance as a filter device by inserting hollow yarn membranes into an outside cylinder and providing flow changing mechanisms in the outside cylinder in such a manner that this outside cylinder can play the role of protecting the hollow yarn membranes and original liquid filtration and air back washing can be efficiently executed by the outside cylinder and the flow changing mechanisms. CONSTITUTION:The hollow yarn membrane module is constituted by inserting the bundle of the hollow yarn membranes 40 into the outside cylinder 51 and providing one or plural pieces of the flow changing mechanisms 53 between the bottom end and top end of the bundle of the hollow yarn membranes in the outside cylinder 51. The original liquid and the air for back washing are introduced from the bottom end of the outside cylinder 51 and flow by ascending in the outside cylinder 51 while the flow thereof is changed b7 the introducing holes 54 of the flow changing mechanisms 53 and the liquid and air are uniformly supplied to respective pieces of the hollow yarn.

8. 发明专利

JPS6394193A PRIMARY SYSTEM PIPING OF BOILING WATER TYPE NUCLEAR POWER PLANT 失效
公开(公告)号：JPS6394193A
公开(公告)日：1988-04-25
申请号：JP23891286
申请日：1986-10-07
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： FUKUMOTO TOSHIHIKO , OSUMI KATSUMI , USUI NAOSHI , KOBAYASHI MASATO
IPC分类号： G21D1/00

9. 发明专利

JPS62211597A METHOD OF DECONTAMINATING PIPING 失效
公开(公告)号：JPS62211597A
公开(公告)日：1987-09-17
申请号：JP5250986
申请日：1986-03-12
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KATAOKA ICHIRO , OSUMI KATSUMI , KOBAYASHI MASATO , ITO HISAO
IPC分类号： G21F9/28 , C25F1/02 , C25F7/00 , G21F9/00 , G21F9/30

10. 发明专利

JPS6267200A METHOD FOR REMOVING METALLIC OXIDE 失效
公开(公告)号：JPS6267200A
公开(公告)日：1987-03-26
申请号：JP20653485
申请日：1985-09-20
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOBAYASHI MASATO , KIKUCHI TSUTOMU , FURUYA YASUMASA , KATAOKA ICHIRO
IPC分类号： G21F9/28 , C25F1/06 , G21F9/00 , G21F9/30
摘要： PURPOSE:To dissolve the metallic oxide sticking to the surface of a stainless steel together with the surface layer and to thoroughly remove the metallic oxide by immersing the stainless steel on the surface of which the metallic oxide sticks into an electrolyte contg. a complexing agent and maintaining the same at adequate potential by cathodic polarization. CONSTITUTION:An object 2 to be cleaned from which the metallic oxide is to be removed is immersed into the electrolyte contg. the complexing agent such as EDTA in an electrolytic cell 1 and is subjected to the cathodic polarization by a DC power source 6 using a counter electrode 4 consisting of a stainless steel, etc. in a method for removing the metallic oxide sticking to the surface of the stainless steel. The potential of the cathodic polarization is so maintained as to exhibit an active dissolution behavior by changing the electrochemical behavior of the stainless steel from the passive state. The above-mentioned potential is adequately maintained at -0.65--0.75V by measuring the same with a potentiometer 5 based on a satd. calomel reference electrode 3. The above-mentioned metallic oxide and the surface of the stainless steel are thereby successively or simultaneously dissolved and the metallic oxide is thoroughly removed.

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