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31. 发明专利

JPH01298001A DEVICE FOR RECOVERING HYDROGEN AND HYDROGEN ISOTOPE 失效
公开(公告)号：JPH01298001A
公开(公告)日：1989-12-01
申请号：JP12832388
申请日：1988-05-27
申请人： HITACHI LTD
发明人： OZAWA YOSHIHIRO , SAKAGAMI MASAHARU , KONDO MASAYOSHI
IPC分类号： G21B1/11 , B01D53/22 , C01B3/16 , C01B3/50
摘要： PURPOSE:To obtain the title device capable of separating and recovering tritium T2 produced by the reaction in the same device with high efficiency by depositing a hydrogen and hydrogen isotope membrane on one side of a porous glass carrier membrane in contact with a catalyst bed. CONSTITUTION:A gas wherein tritium is present in the form of T2O, chemical structure of water or in the form of hydrogen is introduced into a reaction vessel 1 packed with the granular catalyst 4 capable of reducing water to gaseous hydrogen in the presence of CO. A hydrogen separating and recovering tube 5 obtained by depositing a hydrogen-permeable metal such as Pd (alloy) on a porous glass carrier tube 6 in the form of thin film is inserted in the packed bed of the granular catalyst 4. The coexistent hydrogen is forcibly discharged by the tube 5, the conversion ratio of H2O to H2 can be increased to 0.999. The thickness of the film of the hydrogen-permeable metal in the tube 5 is perfectly controlled to

32. 发明专利

JPH01192701A APPARATUS FOR HYDROGEN OCCLUSION/RELEASING 失效
公开(公告)号：JPH01192701A
公开(公告)日：1989-08-02
申请号：JP1696688
申请日：1988-01-29
申请人： HITACHI LTD
发明人： OZAWA YOSHIHIRO , SAKAGAMI MASAHARU
IPC分类号： B01D53/14 , C01B3/56
摘要： PURPOSE:To provide the title apparatus designed to reduce the inventry of hydrogen (its isotopes), by providing a belt on which a hydrogen-occluding metal or alloy has been held and making such a construction as to circulate said belt between a low-temperature section for occluding hydrogen (its isotopes) and a high-temperature section for releasing the hydrogen (its isotopes). CONSTITUTION:A vacuum vessel 1 is divided into a low-temperature section 2 for occluding hydrogen (its isotopes) and a high-temperature section 3 for releasing hydrogen (its isotopes) and the airtightness of the both sections is retained by a sluice valve 4. Plural containers 6 packed with a hydrogen- occluding metal or alloy are located on a belt 5. Hydrogen (its isotopes) is introduced via the entrance 7 into the low-temperature section 2 and is made to be occluded into said metal or alloy. Thence, said belt 5 is rotated to feed one of said containers 6 into the high-temperature section 3 to release the hydrogen (its isotopes); concurrently, another one of said containers 6 is fed through the opposite side of the belt 5 into the low-temperature section 2. The above- mentioned apparatus is particularly suitable for the deuterium purification and recovery processes in a nuclear fusion furnace.

33. 发明专利

JPS63281100A PREPARATION OF SOLIDIFIED BODY FOR IODINE ADSORBENT 失效
公开(公告)号：JPS63281100A
公开(公告)日：1988-11-17
申请号：JP11466287
申请日：1987-05-13
申请人： HITACHI LTD
发明人： OZAWA YOSHIHIRO , IZUMIDA TATSUO , UETAKE NAOTO , MIURA NOBORU
IPC分类号： G21F9/30 , B09B3/00 , G21F9/00
摘要： PURPOSE:To suppress release of iodine to environment by using a harder which does not contain phosphoric acid to prepare a solidified cement glass body. CONSTITUTION:Calcium silica (CaO-SiO2) having a curing effect is added as the hardener of the solidified cement glass body to prepare the cement glass, to which the silver alumina adsorbent adsorbent with iodine is dispersed thereon. The cement glass is poured in this state into a vessel and is solidified by spending several hours. The release of the iodine to the environment is suppressed by using the hardener which does not contain the phosphoric acid to prepare the solidified cement glass body in such a manner.

34. 发明专利

JPS6311895A CONCENTRATION CONTROLLER FOR SOLVENT EXTRACTION PROCESS 失效
公开(公告)号：JPS6311895A
公开(公告)日：1988-01-19
申请号：JP15404786
申请日：1986-07-02
申请人： HITACHI LTD
发明人： OTSUKA HISAO , UDA TATSUHIKO , OZAWA YOSHIHIRO
IPC分类号： G21C19/46

35. 发明专利

JPS6291878A RADIATION MATERIAL CAPTURING TYPE DOSIMETER 失效
公开(公告)号：JPS6291878A
公开(公告)日：1987-04-27
申请号：JP23120885
申请日：1985-10-18
申请人： HITACHI LTD
发明人： UDA TATSUHIKO , OTSUKA HISAO , MIURA NOBORU , OZAWA YOSHIHIRO
IPC分类号： G01T1/11 , G01T1/02 , G01T7/02
摘要： PURPOSE:To improve the capturing efficiency of an alpha radioactive material and the detection sensitivity of a low level of alpha radiation dose by capturing pulverized particles by the electrostatic force of a dielectric high-polymer film (electret) which is polarized and electrified by the electric charge applied thereto under a high voltage. CONSTITUTION:For example, a tetrafluoroethylene/hexafluoropropylene copolymer resin is subjected to a prescribed treatment to obtain a high-polymer film 19 as the electret to forma thermoluminescence dosimeter (TLD) element. The electric charge is applied to such high-polymer film 19 under the high voltage to preliminarily hold the high surface charge; thereafter,the film is installed in a dust collecting chamber 32. The air contg. the suspended dust to be monitored is sucked by a block 34 and the dust is captured by the electrostatic force of the high-polymer film 19. The high- polymer film 19 with which the capturing ends is taken out after the prescribed time and is installed in a dark box 59 where the film is heated by a heater 52. The unstable crystal lattice by the dose to which the TLD element is subjected is thereby changed to the stable crystal lattice. Since the quantity of the fluorescence emitted in this stage is proportional to the instability of the crystal lattice, the measurement is made with a photomultiplier 55 and integration 57 is made, by which the radiation dose is obtd.

36. 发明专利

JPS61225682A METHOD AND APPARATUS FOR MEASURING RADIATION DOSE USING ELECTRET FILM 失效
公开(公告)号：JPS61225682A
公开(公告)日：1986-10-07
申请号：JP6609085
申请日：1985-03-29
申请人： HITACHI LTD
发明人： UDA TATSUHIKO , OTSUKA HISAO , OZAWA YOSHIHIRO
IPC分类号： G01T1/02 , G01T1/14 , G01T1/16
摘要： PURPOSE:To enable the measurement of radiation dose, by capturing changes in the density of the surface change in an electret film as variations in the piezo-electric output of a piezo-electric element. CONSTITUTION:An electret film 4 is exposed to a radiation field to be measured for a specified time length and then, placed on the piezo-electric element 1. When measuring the dose, the element 1 and the film 4 is compressed securely with a glass plate. Then, under such a condition, an AC voltage of a fixed frequency is applied to an electrode 2 of the element 1 with an AC vibration power source 5 to vibrate the element 1. The resulting piezo-electric output is drawn from an electrode 3 and synchronized 7 in the phase with a reference signal 6 from a power source 5 and the radiation dose is shown on a display 9 through an amplifier 8.

37. 发明专利

JPS6147596A Radioactive exhaust gas treating method 失效
标题翻译：放射性排气处理方法
公开(公告)号：JPS6147596A
公开(公告)日：1986-03-08
申请号：JP16934384
申请日：1984-08-15
申请人： Hitachi Ltd , Nippon Gennen Service Kk , Central Res Inst Elect
发明人： KURIYAMA OSAMU , FUNABASHI KIYOMI , OZAWA YOSHIHIRO
IPC分类号： G21F9/02 , G21F9/00

38. 发明专利

JPS6064628A PREPARATION OF URANIUM ADSORBENT 失效
公开(公告)号：JPS6064628A
公开(公告)日：1985-04-13
申请号：JP854684
申请日：1984-01-23
申请人： HITACHI LTD
发明人： YAMASHITA HISAO , OZAWA YOSHIHIRO , MAEKOYA CHIAKI , FUJITA KAZUNORI , TAKEUCHI SEIJI , NAKAJIMA FUMITO
IPC分类号： C01G43/00 , B01J20/06 , B01J20/32 , B01J20/34 , C22B60/02
摘要： PURPOSE:To attain to enhance the selectivity and adsorbing capacity of an uranium adsorbent, by supporting a Ti-Fe type hydroxide composite of which the atomic ratio of a Ti-atom to a Fe-atom is set to 0.3-20 by an inert porous carrier. CONSTITUTION:A water soluble titanium compound such as titanium tetrachloride, titanium sulfate or titanium tetrabromide and a water soluble iron compound such as ferrous sulfate or ferric sulfate are mixed in the presence of water in such a ratio that the atomic ratio of a Ti-atom to an Fe-atom is 0.3-20. Subsequently, ammonia dilute with air or nitrogen is introduced into the resulting aqueous mixture to form adsorbent particles. In the next step, an inert porous carrier, for example. gamma-alumina is preliminarily immersed in the aqueous mixture of the titanium compound and the iron compound and a composite is precipitated on the carrier.

39. 发明专利

JPS59220691A METHOD OF SOLIDIFYING RADIOACTIVE WASTE 失效
公开(公告)号：JPS59220691A
公开(公告)日：1984-12-12
申请号：JP9537683
申请日：1983-05-30
申请人： HITACHI LTD
发明人： FUKAZAWA TETSUO , OOTSUKA MASAHARU , UETAKE NAOTO , OZAWA YOSHIHIRO
IPC分类号： G21F9/16 , G21F9/30

40. 发明专利

JPS5965297A Method of suppressing adhesion of radioactive material to atomic power plant 失效
标题翻译：抑制放射性物质粘附到原子能发电厂的方法
公开(公告)号：JPS5965297A
公开(公告)日：1984-04-13
申请号：JP17460782
申请日：1982-10-06
申请人： Hitachi Ltd
发明人： OZAWA YOSHIHIRO , UCHIDA SHIYUNSUKE , KATSURA AKIHIDE
IPC分类号： G21F9/00 , G21D1/00 , G21D1/02
CPC分类号： Y02E30/40

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