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1. 发明专利

JP2001194486A REPROCESSING METHOD FOR SPENT NUCLEAR FUEL 失效
公开(公告)号：JP2001194486A
公开(公告)日：2001-07-19
申请号：JP2000002510
申请日：2000-01-11
申请人： MITSUBISHI HEAVY IND LTD
发明人： MIYAKE TAKASHI , ISHIHARA NOBUO , OTA HIDEYUKI , FUJIOKA TSUNAAKI
IPC分类号： C01G43/01 , G21C19/44 , G21C19/46
摘要： PROBLEM TO BE SOLVED: To simplify a whole apparatus in reprocessing spent nuclear fuel by suppressing the generation radioactive wastes. SOLUTION: Spent fuel 31 of a light water reactor is made powder fuel 35 in an oxidation/powdering process. By using tributylphosphate-nitric acid complex 39, uranium-plutonium is selectively solved from the powder fuel 35 to gain uranium-plutonium solution liquid 41, which makes contact with nitric acid solution 51 to extract uranium-plutonium in reverse manner. The nitric acid solution 57 containing uranium-plutonium is purified and denitrated to be conversed into an oxide fuel 29.

2. 发明专利

JPH11174194A METHOD FOR REPROCESSING NUCLEAR FUEL 失效
公开(公告)号：JPH11174194A
公开(公告)日：1999-07-02
申请号：JP34307997
申请日：1997-12-12
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUJIOKA TSUNAAKI , OTA HIDEYUKI , MIYAKE TAKASHI
IPC分类号： G21C19/46
摘要： PROBLEM TO BE SOLVED: To simplify reaction processes and further reduce the volume of generated wastes in the reprocess of fuels. SOLUTION: Carbon dioxide is supplied from a carbon dioxide supplying line 5 to a dissolvent separation container 1, and the inside thereof is kept a carbon dioxide atmosphere in the temperature range between 35 deg.C and 100 deg.C and the pressure range from 75 to 300 atmospheric pressure. A fuel from a fuel supplying line 3, tri-n-butylphosphoric acid(TBP) from a supplying line 7 and nitric acid are reacted together. A TBP complex of uranium(U) and plutonium(Pu) is dissolved in the carbon dioxide in a super critical fluid to recover the from an exit line 11. fission product that does not form TBP complex and insoluble residue are separated by exhausting them from an exhaust line 13.

3. 发明专利

JPH10293093A QUANTITATIVE ANALYSIS METHOD OF OXY IRON HYDROXIDE 失效
公开(公告)号：JPH10293093A
公开(公告)日：1998-11-04
申请号：JP10317197
申请日：1997-04-21
申请人： MITSUBISHI HEAVY IND LTD
发明人： OTA HIDEYUKI , MURATA KAZUTOYO
IPC分类号： G01N5/04
摘要： PROBLEM TO BE SOLVED: To perform the quantitative analysis of iron oxyhydroxide by heating a solid iron oxyhydroxide at a specific temperature under an anaerobic atmosphere and measuring the reduction in weight. SOLUTION: A solid iron oxyhydroxide is heated at a temperature of 150-400 deg.C under an anaerobic atmosphere, a reduction in weight due to own dehydration reaction is measured, and the quantitative analysis of iron oxyhydroxide is performed. When the temperature of an iron oxide to be measured increases to approximately 150 deg.C, an adhesion water is completely eliminated, the dehydration reaction of iron oxyhydroxide starts at approximately 196 deg.C and ends at approximately 319 deg.C. Considering these conditions, the iron oxide is heated at a temperature of approximately 150-400 deg.C, thus obtaining information only on iron oxyhydroxide selectively even if magnetite and hematite are mixed. With this method, the absolute value of the iron oxyhydroxide in the iron oxide can be grasped and the environment in a plant can be evaluated accurately.

4. 发明专利

JPH02208300A METHOD AND DEVICE FOR GROWTH OF PROTEIN CRYSTAL 失效
公开(公告)号：JPH02208300A
公开(公告)日：1990-08-17
申请号：JP2972889
申请日：1989-02-09
申请人： MITSUBISHI HEAVY IND LTD
发明人： TAKAOKI MUNEO , OKAZAKI HIROSHI , MATSUMOTO HIROAKI , OTA HIDEYUKI , KAMIMURA KAZUHIDE
IPC分类号： B64G7/00 , B01L99/00 , C07K1/14 , C30B7/04 , C30B28/04 , C30B29/52
摘要： PURPOSE:To provide the large crystals of a protein in a reduced number of the crystals by disposing a pressure-adjusting means, a solution-supplying means, etc., to adjust the pressure, the concentration of the protein, etc., when the crystals of the protein are produced by evaporating a solvent from a drop of the protein solution. CONSTITUTION:A solution drop 6 consisting of the solution 3 of a protein is held with a protein solution drop-holding means 2 disposed in a crystal-growing container 1. The pressure in the container 1 is maintained constant with a container inner pressure-adjusting means 8. The protein solution 3 is supplied for the solution drop 6 with protein solution-supplying means 4 and 5 to maintain the concentration of the protein at a suitable value. The size of the solution drop 6 is measured and adjusted. Thereby, a large crystal 9 is obtained.

5. 发明专利

JP2002055195A CASK AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002055195A
公开(公告)日：2002-02-20
申请号：JP2000244367
申请日：2000-08-11
申请人： MITSUBISHI HEAVY IND LTD
发明人： OSONO MASANARI , OTA HIDEYUKI , NAJIMA KENJI , ITO TOMOHIRO , OKAME SHINJI
IPC分类号： G21C19/32 , G21C19/06 , G21F5/008 , G21F9/36
摘要： PROBLEM TO BE SOLVED: To provide a cask and its manufacturing method capable of securing a margin for expansion of a neutron shield by a simple work. SOLUTION: This cask 1 is equipped with a barrel body 5, an outer cylinder 6, a resin 13 serving as a neutron shield to shield a neutron in a space 11 divided by heat transmitting fins 10 serving as a heating element, and a structural body 12 provided side by side on at least one side of the resin 13 while forming the expansion space of the resin 13. In this structure, a margin for expansion of the resin 13 can be easily secured by disposing the structural body 12 relative to the space 11 by pasting and disposing the resin 13 relative to the structural body 12.

6. 发明专利

JPH0324098A METHOD FOR GROWING CRYSTAL OF PROTEIN AND DEVICE THEREFOR 失效
公开(公告)号：JPH0324098A
公开(公告)日：1991-02-01
申请号：JP15569989
申请日：1989-06-20
申请人： MITSUBISHI HEAVY IND LTD
发明人： SATO SHUICHI , OKAZAKI HIROSHI , MATSUMOTO HIROAKI , OTA HIDEYUKI , KAMIMURA KAZUHIDE
IPC分类号： C07K14/52 , C07K1/14 , C07K14/54 , C07K14/555 , C07K14/575 , C07K14/62 , C07K16/00 , C30B29/58
摘要： PURPOSE:To obtain the good-quality and large-sized title crystal in circumference of minute gravity by extruding a protein solution and these solution of agent for growing crystal, forming droplet in which these two solutions are each other directly or indirectly brought into contact and mutually diffusing the protein solution and solution of agent for growing crystal. CONSTITUTION:A protein solution 4 and solution 5 of agent for growing crystal are packed into cylinders 6 and 7 having two nozzles 2 and 3 opening in a vessel 1 made of a transparent plastic and approaching each other and communicating into each nozzle 2 and 3 and the protein solution 4 and solution 5 of agent for growing crystal are extruded from each nozzle 2 and 3 by pushing pistons which are mechanism for extruding these solutions from nozzles. As a result, droplet 10 in which these two solutions are each other directly or indirectly brought into contact is formed and the protein solution and solution of agent for growing crystal are mutually diffused and a crystal is deposited to efficiently provide the crystal of protein.

7. 发明专利

JPH02192495A APPARATUS FOR GROWING PROTEIN CRYSTAL 失效
公开(公告)号：JPH02192495A
公开(公告)日：1990-07-30
申请号：JP983989
申请日：1989-01-20
申请人： MITSUBISHI HEAVY IND LTD
发明人： SATO SHUICHI , OKAZAKI HIROSHI , MATSUMOTO HIROAKI , KAMIMURA KAZUHIDE , OTA HIDEYUKI
IPC分类号： C30B7/04 , C07K1/14 , C30B29/58
摘要： PURPOSE:To simplify seeding operation and prevent droplets from breaking in seeding by providing an injecting means for a seed crystal of a protein in a passage for a mixed solution of a protein solution and a salt solution fed to a crystal growth chamber in a gas-liquid diffusion type apparatus for growing a protein crystal. CONSTITUTION:A seeding mechanism 10 is rotatably provided near the tip of a syringe 2 equipped with a piston 4 and a seed crystal is injected into the seeding mechanism 10 with a syringe 9. The seeding mechanism 10 is then rotated to provide a passage of the seeding mechanism 10 in the same direction as that of a passage 3 of the syringe 2. A mixed solution of a protein solution in a low concentration and a salt solution contained in the syringe 2 is then extruded with a piston 4 to form a droplet 7 of the mixed solution containing the seed crystal at the tip 6 of the syringe 2. Water is then evaporated from the surface of the droplet 7 to grow a crystal 8 of the protein.

8. 发明专利

JP2001141881A CONCRETE-MADE STORAGE VESSEL 失效
公开(公告)号：JP2001141881A
公开(公告)日：2001-05-25
申请号：JP31982899
申请日：1999-11-10
申请人： MITSUBISHI HEAVY IND LTD
发明人： OTA HIDEYUKI , NAJIMA KENJI , SAKAGUCHI YASUHIRO , SAIDA TOMIKANE , MATSUNAGA KENICHI , MURAKAMI KAZUO
IPC分类号： G21C19/06 , G21F5/002 , G21F5/005 , G21F5/008 , G21F9/36
摘要： PROBLEM TO BE SOLVED: To provide a concrete-made storage vessel capable of storing radioactive materials safely, stably and for long period. SOLUTION: A nearly cylidrical vessel body 12 made of concrete has a column shape container part 22 and in this container part, a cannister 14 wherein radioactive material is sealed is contained. The concrete forming the main vessel contains powder or pellet state olefin group resin or epoxy group resin of 1 to 10 wt.% and boron compound of 1 to 3 wt.% to increase hydrogen content.

9. 发明专利

JPH09292198A HEAT EXCHANGER, SUPPORTING PLATE FOR HEAT EXCHANGER AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH09292198A
公开(公告)日：1997-11-11
申请号：JP10527596
申请日：1996-04-25
申请人： MITSUBISHI HEAVY IND LTD
发明人： OTA HIDEYUKI , MURATA KAZUTOYO , TOKUNAGA SETSUO , HIRANO HIROSHI , HATTORI TAKAHISA , OTAKE IKUO , NAGATSUNE MIKIO
IPC分类号： F28D7/16 , F28F9/013 , F28F19/06
摘要： PROBLEM TO BE SOLVED: To reduce and prevent adhesion of iron oxide onto a tube supporting plate supporting a heat exchange plate of a heat exchanger so as to maintain a constantly stable output by coating a surface of the tube supporting plate supporting the heat exchange tube of the heat exchanger with chromium. SOLUTION: A surface of a tube supporting plate 1 supporting a heat exchange tube 4 of a heat exchanger is coated with chromium. Preferably, hexagonal chromium oxide 3 is further coated on this chromium coating 2. The heat exchanger comprises a body having an inlet nozzle for supply water or steam and an outlet nozzle, a heat exchange tube 4 installed within the body for allowing a medium for performing heat exchange with the supply water or steam to pass through, an inlet water chamber and an outlet water chamber provided to the body and connected respectively to one end and another end of the heat exchange tube 4 and the tube supporting plate 1 of the heat exchanger supporting the heat exchange tube. More particularly, the heat exchanger and heat exchanger tube supporting plate 1 is subjected to chromium plating in a bath of a chromium plating solution wherein content of iron is controlled at not higher than 0.5g/l and the surface of the tube supporting plate 1 is coated with a chromium film free from ion.

10. 发明专利

JPS63274626A SYNTHESIS OF FERRITE CONTAINING DIVALENT IRON ION 失效
公开(公告)号：JPS63274626A
公开(公告)日：1988-11-11
申请号：JP10643787
申请日：1987-05-01
申请人： MITSUBISHI HEAVY IND LTD
发明人： OTA HIDEYUKI , MURAYAMA JIRO
IPC分类号： C01G49/00 , C01G53/00 , C04B35/28
摘要： PURPOSE:To obtain the title ferrite whose production has been considered impos sible by the conventional dry process by pulverizing a powder mixture consisting of pulverous Fe2O3 and divalent metal oxide in a specified compositional ratio, mixing the pulverized product, compression molding the mixture, calcining in the air, and calcining further in vacuum. CONSTITUTION:A ferrite of a divalent metal (Mi) is prepd. from the above described compression molded product consisting of an oxide of Mi and Fe2O3 (hematite) in accordance with the following reaction formula: MiO+Fe2 O3 MiFe2O4 (I). Succeedingly, Fe3O4 (magnetite) is prep. from residual Fe2O3 at high temp. in vacuum in accordance with the reaction formula (II): Fe2O3 Fe3 O4+1/202 (II). Aimed ferrite contg. Fe ions is obtnd. thereafter by allowing MiFe2O4 obtd. by formula (I) to react with Fe3O4 obtd. by formula (II) in accor dance with the reaction formula: xFe3O4+(1-x)MiFe2O4 (FexMi1-x)Fe2O4 (III). Suitable MiO is, for example, NiO. A ferrite contg. divalent Fe ions and having an optional shape and high purity is obtd. in a short time by the method of this invention.

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