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31. 发明专利

JPS54136393A MEASURING METHOD OF MAGNETIC SUBSTANCE CONCENTRATION IN FLUID 失效
公开(公告)号：JPS54136393A
公开(公告)日：1979-10-23
申请号：JP4387778
申请日：1978-04-14
申请人： MITSUBISHI HEAVY IND LTD
发明人： MIYAKE TAKASHI , KAMIMURA TAKEO , KAYANO ISAMU
IPC分类号： G01N27/74 , G01N27/72
摘要： PURPOSE:To know the magnetic substance concentration, and realize quantitative measurement of reaction rate, monitoring of degree of progress, and prompt confirmation of end point of reaction, by measuring the change in the attraction force exerting between the magnet and the fluid containing magnetic substance or the magnetic force in the magnetic field of fluid. CONSTITUTION:In the event of ferrite-making process treatment of waste water containing heavy metals, seeing that the reaction rate and magnetism increasing quantity are established in a certain relation, the reaction rate is known by measuring the magnetic quantity. A magnet 2 is put on one side of a balance scale 1, and a balancing weight 3 is put on the other side, and a sample liquid 4 is opposedly disposed above the magnet 2 at a certain spacing by means of a holding base 5. The attraction force exerting between the sample liquid 4 and magnet 2 varies with the quantity of magnetic substance contained in the liquid 4, and from this variation quantity, the amount of magnetic substance, namely, the reaction rate, may be known. Also, by putting the sample liquid in a magnetic field, the change in the magnetic force is detected by a sensor, such as magnetoresistive element, and may be picked up as electric signal. By utilizing the change in the magnetic force in the magnetic field of fluid, the reaction rate may be measured quantitatively, and the change with time may be monitored.

32. 发明专利

JPS5481168A DRY TYPE DENITRIFICATION 失效
公开(公告)号：JPS5481168A
公开(公告)日：1979-06-28
申请号：JP14883677
申请日：1977-12-13
申请人： MITSUBISHI HEAVY IND LTD
发明人： HORI TAKASHI , ISHIBASHI YASUMASA , KAYANO ISAMU
IPC分类号： B01D53/56 , B01D53/34
摘要： PURPOSE:To prevent the adhesion of dust to heat exchangers and also the corrosion of elements by the procedure in which silicon dioxide-containing iron oxide, etc., is injected into the upstream side of heat exchangers to cause the reaction of it with acid ammonium sulfate to take place in a dry type denitrification method in which ammonia is injected into exhaust gas. CONSTITUTION:In a dry denitrification method in which NOx present in combustion exhaust gas is treated by ammonia as a reducing agent with or without catalyst, an additive, e.g., SiO2-containing iron oxide or an alkaline earth metal salt, e.g., magnesium oxide, etc., is introduced into the upstream side of heat exhanger to cause the reaction of NOx present with acid ammonium sulfate (NH4HSO4) formed from the reaction of unreacted NH3 after denitrification, SO3 present in exhasut gas, and water to take place, and then the reaction product thus formed and accumulated in the reaction system is removed by a soot blow operation. The preferred amount of the additive is 1 to 10 times equivant of SO3 present in exhasut gas, preferably 2 to 5 times equivalent.

33. 发明专利

JPH09104880A PREVENTION OF HIGH-TEMPERATURE CORROSION OF FUEL OIL BURNING GAS TURBINE 失效
公开(公告)号：JPH09104880A
公开(公告)日：1997-04-22
申请号：JP26034495
申请日：1995-10-06
申请人： MITSUBISHI HEAVY IND LTD
发明人： ARIOKA KOJI , NAKAMORI MASAHARU , KAYANO ISAMU , OTA HIDEYUKI , KOSHIRO YASUMASA
IPC分类号： C10L1/12 , C10L1/18 , C10L1/188 , C10L1/24 , C10L1/30 , C10L10/04
摘要： PROBLEM TO BE SOLVED: To provide a method for preventing high-temperature corrosion of a gas turbine for burning a low-quality fuel such as a fuel oil C. SOLUTION: In order to reduce high-temperature corrosion in a gas turbine for burning a low-quality fuel containing a large amount of impurities with high-temperature corrosiveness, an Na compound alone or a mixture of the Na compound and an alkaline earth metal compound is added to a fuel and a fuel ash composition to be stuck to a high-temperature part is made rich in a sulfate so as to make Np/V or [Na+Ca(mg)]/V (weight ratio) to 1-5.

34. 发明专利

JPH07292453A HEAT SHIELDING COATING METHOD FOR PREVENTING HIGH TEMPERATURE OXIDATION 失效
公开(公告)号：JPH07292453A
公开(公告)日：1995-11-07
申请号：JP8930094
申请日：1994-04-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAYANO ISAMU , NAKAMORI MASAHARU , KAWAI HISATAKA
IPC分类号： C23C4/06 , C23C28/00
摘要： PURPOSE:To provide a heat shielding coating method applied to a metallic member in contact with high temp. gas. CONSTITUTION:In a heat shielding coating method applied to a metallic member in contact with high temp. gas, after a metallic member 1 is coated with a MCrAlY layer 2 (M: Ni and/or Co) by low pressure plasma spraying, a ZrO2-Y2 O3 layer 3 is subjected to atmospheric plasma spraying. Further, inorganic glaze 4 (if necessary, ZrO2-Y2O3 is mixed in.) is applied with a brush before it is sintered, or it is directly thermal-sprayed, allowing heat shielding coating for preventing high temp. oxidation to be applied. In this way, the time that it takes for the ZrO2-Y2O3 layer 3 to be peeled is prolonged.

35. 发明专利

JPH07238362A HIGHLY CORROSION RESISTANT SURFACE TREATMENT 失效
公开(公告)号：JPH07238362A
公开(公告)日：1995-09-12
申请号：JP2941794
申请日：1994-02-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： NAKAMORI MASAHARU , KAYANO ISAMU , TORIGOE TAIJI , HIROTA NORIHIDE
IPC分类号： C23C4/08 , C23C4/18
摘要： PURPOSE:To perform highly corrosion resistant surface treatment, excellent in the corrosion resistance of a flame sprayed layer and in the adhesion of the flame sprayed layer to a base material, by subjecting a material to be treated to low pressure plasma spraying with CoCrAlY alloy and then highly concentrating Al on the surface of the resultant flame sprayed layer. CONSTITUTION:The surface of a moving or stationary blade, as a material to be treated, is flame sprayed with a CoCrAlY or CoNiCrAlY alloy, containing, by weight, about 20-25% Cr and about 6-8% Al, by low pressure plasma spraying (VPS), by which a first layer 2 is formed in 200-400mum thickness. Subsequently, after Al is executed cementation on the surface of the first layer 2 or Al-Si slurry is applied to this surface, specified heat treatment is done. By this method, Al or Al-Si is highly concentrated on the surface of the above MCrAlY flame sprayed layer, and an Al or Al-Si pack cementration layer 1 is formed in 10-100mum depth.

36. 发明专利

JPH06220603A SURFACE LAYER OF ROTER AND STATOR BLADE 失效
公开(公告)号：JPH06220603A
公开(公告)日：1994-08-09
申请号：JP4922992
申请日：1992-03-06
申请人： MITSUBISHI HEAVY IND LTD
发明人： ENDO TADAYOSHI , NAKAMORI MASAHARU , KAYANO ISAMU , TAKAHASHI KOJI , HIROTA NORIHIDE
IPC分类号： C23C4/08
摘要： PURPOSE:To further improve the high-temp. corrosion resistance by coating the blade surface alternately with a first layer of (Co)NiCrAlY of specified composition and a second layer of Co(Ni)CrAlY by low-pressure plasma spraying. CONSTITUTION:The blade surface is alternately coated with a first layer of NiCrAlY contg., by weight, 20-25% Cr, 6-8% Al and 0.5-1% Y or CoNiCrAlY (Co/Ni unspecified) and a second layer of CoCrAlY contg. >=30% Cr, >=10% Al and 0.5-1% Y or CoNiCrAlY (Co/Ni unspecified) by low-pressure plasma spraying, and the process is repeated in accordance with the degree of corrosion resistance. Or, the surface is coated with the first layer, a second layer of NiCrAlPtY contg. 1-5% Pt, 20-25% Cr, 6-8% Al and 0.5-1% Y or CoNiCrAlPtY (Co/Ni unspecified) and a third layer of NiCrAlY contg. >=30% Cr, >=10% Al and 0.5-1% Y or CoNiCrAlY (Co/Ni unspecified) by low-pressure plasma spraying.

37. 发明专利

JPH0688197A SURFACE LAYER OF DYNAMIC AND STATIC VANES 失效
公开(公告)号：JPH0688197A
公开(公告)日：1994-03-29
申请号：JP12524092
申请日：1992-05-19
申请人： MITSUBISHI HEAVY IND LTD
发明人： ENDO TADAYOSHI , NAKAMORI MASAHARU , KAYANO ISAMU , TAKAHASHI KOJI , KITAI TAKAHITO
IPC分类号： C23C4/04 , C23C4/10 , C23C16/40 , C23C16/50 , C23C28/00
摘要： PURPOSE:To develop the heat resistant alloy dynamic and static vanes of a gas turbine having excellent heat resistance and oxidation resistance by forming an alloy layer of a specific compsn. and a ceramic layer of ZrO2.Y2O3 ceramics and Al2O3, Cr2O3, etc., on the surfaces of the dynamic and static vanes. CONSTITUTION:The alloy consisting, by weight %, 20 to 25% Cr, 6 to 8% Al, 0.5 to 1% Y and the balance Ni or Ni and Co is plasma thermally sprayed under a low pressure at 20 to 50mum on the outside surfaces of the Ni or Co heat resistant dynamic and static vanes of the gas turbine. The ZrO2-Y2O3 ceramics consisting of 8 to 20% Y2O3 and the balance ZrO2 coated by atm. plasma thermal spraying thereon. Further, the surface thereof is coated with the ceramics such as Al2O3, Cr2O3, MgO, CaO and SiO2, at 10 to 50mum thickness by a chemical vapor deposition or low pressure thermal plasma spraying. The heat resistance, oxidation resistance and corrosion resistance of the dynamic and static vanes are greatly improved.

38. 发明专利

JPH0592150A ANTICORROSION TREATMENT DEVICE OF DUST COLLECTOR 失效
公开(公告)号：JPH0592150A
公开(公告)日：1993-04-16
申请号：JP13028491
申请日：1991-05-07
申请人： CHUBU ELECTRIC POWER , MITSUBISHI HEAVY IND LTD
发明人： TAKATSUKI MUNEO , YAMASHITA NOBUHIRO , YADA KATSUTOSHI , KAYANO ISAMU , ISHIBASHI YASUMASA
IPC分类号： B03C3/16 , B03C3/74 , B03C3/78
摘要： PURPOSE:To certainly and efficiently prevent the corrosion in a dust collector after a plant is stopped. CONSTITUTION:An anticorrosion treatment device is equipped with the sprinkling nozzles 5 internally provided to a dust collector 1, a washing water supply means for supplying washing water to the sprinkling nozzles 5, a pH measuring device 28 for measuring the pH value of the discharged liquid from the dust collector 1 and an anticorrosion agent supply means for supplying an anticorrosion agent to the sprinkling nozzles 5 on the basis of the pH value of the discharged liquid. By this constitution, the ash defosited to the dust collecting plates 3 in the dust collector 1 is sufficiently removed by the washing means and the anticorrosion agent is sprinkled to the metal surfaces of the dust collecting plates 3 of the dust collector 1 by the anticorrosion means and the sprinkling amount of washing water and the anticorrosion agent is suppressed to the min. necessary amount.

39. 发明专利

JPH036393A SURFACE TREATMENT FOR HARD CHROME PLATING 失效
公开(公告)号：JPH036393A
公开(公告)日：1991-01-11
申请号：JP13923189
申请日：1989-06-02
申请人： MITSUBISHI HEAVY IND LTD , KORYO ENG KK
发明人： KAYANO ISAMU , TSURU SATOSHI
IPC分类号： B24B29/00 , C25D5/48
摘要： PURPOSE:To improve the corrosion resistance of a hard-chrome-plated metallic material by infiltrating rust preventive oil into pores in a hard chrome plating layer and then sealing the pores by means of buffing. CONSTITUTION:When a hard chrome plating layer 2 is formed on the surface of a metallic material 1, pores 3 of minute diameter exist in the plating layer 2 and the metallic material 1 is exposed through the above pores 3 and corroded. In order to prevent the above, the hard-chrome-plated metallic material is immersed in a viscous oil 4 having rust-preventing property, such as lubricating oil, grease, and petroleum solvent, to which rust inhibiting agents, such as petroleum, are added, by which the viscous oil 4 for rust prevention is allowed to infiltrate into the pores 3 in the above chrome plating layer 2. Subsequently, buffing is applied to the above surface to seal 5 the pores 3, by which the occurrence of corrosion in the metallic material 1 through the pores 3 can be prevented.

40. 发明专利

JPS6226818B2 失效
公开(公告)号：JPS6226818B2
公开(公告)日：1987-06-11
申请号：JP9242681
申请日：1981-06-16
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAYANO ISAMU , YOKOYAMA SHIGEO , MITSUOKA SHIGEAKI , HIMI TAKASHI
IPC分类号： B01D53/94 , B01D53/86 , B01D53/96 , B01J37/14 , B01J38/04

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