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1. 发明专利

JPS6476726A MANUFACTURE OF SEMICONDUCTOR 失效
公开(公告)号：JPS6476726A
公开(公告)日：1989-03-22
申请号：JP23339987
申请日：1987-09-17
申请人： HITACHI LTD
发明人： KUROKAWA HIDEAKI , OKOCHI ISAO , EBARA KATSUYA , TAKAHASHI SANKICHI , HISHINUMA TAKAO , MATSUZAKI HARUMI , MONMA NAOHIRO
IPC分类号： H01L21/304 , G11C15/04 , H01L21/316
摘要： PURPOSE:To prevent contamination at the time of feeding, and to form a thin oxide film of high quality while controlling oxidizing velocity in ultrahighly pure water by forming an oxide film on the surface of a semiconductor wafer in the ultrahighly pure water by condensing steam passed through a hydrophobic porous film. CONSTITUTION:In order to first remove the contaminants and natural oxide film of the surface of a silicon wafer substrate 32, it is cleaned with chemicals. Then, after the used chemicals are removed and cleaned with superpure water, it is oxidized under water with new ultrahighly pure water 34. Here, after an oxide film of approx. 10-40Angstrom is formed, it is dried by spin drying, IPA vapor drying or steam drying, and oxidized in a furnace. Accordingly, when moving from the cleaning step through the drying step to the oxidizing step, since the surface of the silicon wafer is made hydrophilic, contaminants can be considerably prevented as compared with a conventional system being hydrophobic.

2. 发明专利

JPS6430113A MANUFACTURE OF OXIDE SUPERCONDUCTIVE MATERIAL 失效
公开(公告)号：JPS6430113A
公开(公告)日：1989-02-01
申请号：JP18336287
申请日：1987-07-24
申请人： HITACHI LTD
发明人： KUMAGAI TERUO , HIGASHIYAMA KAZUHISA , OKADA HIDEO , YAMASHITA HISAO , KAMO YUICHI , MATSUDA SHINPEI , HISHINUMA TAKAO
IPC分类号： H01L39/12 , B28B1/00 , H01B12/02 , H01B13/00 , H01F6/06
摘要： PURPOSE:To obtain a superconductive material with a high superconductive critical property by impregnating one or more solution selected from solutions of a superconductive substance, and of a superconductive material and a superconductor precursor, in the clearances of a superconductor formed beforehand, and baking and sintering it to fill up the clearances making the true density up to 80% or higher. CONSTITUTION:A superconductive material is impregnated to a superconductive material solved in the water, in a solution solved in a solvent such as ethanol, or in a slurry of fine powder presenting a superconductive property, or held in such a solution by hydrolyzing after impregnation by using an alkoxide salt to the superconductive material. After impregnating or holding in such a way, it is baked and sintered. Consequently, the filling rate and the sintering rate of the superconductive substance of a formation body can be raised up to 80% or more without deteriorating the superconductive property of the substance. It can be possible to give a high current density to a superconductive material accordingly.

3. 发明专利

JPS63291481A SUPERCONDUCTING SUBSTANCE/REFRIGERANT CONTACT DEVICE 失效
公开(公告)号：JPS63291481A
公开(公告)日：1988-11-29
申请号：JP12587287
申请日：1987-05-25
申请人： HITACHI LTD
发明人： HIGASHIYAMA KAZUHISA , KUMAGAI TERUO , OKADA HIDEO , KAMO YUICHI , YAMASHITA HISAO , AIHARA KATSUZO , MATSUDA SHINPEI , HISHINUMA TAKAO
IPC分类号： H01L39/04 , F25D3/10 , H01F6/04
摘要： PURPOSE:To efficiently bring a superconductor into contact with a refrigerant and to sufficiently perform the characteristics of the superconductor substance by pulverizing granular oxide superconducting material in a powder state to bring it into contact with the refrigerant in a slurry state or to mold the material as a molding, and using the molding as a stationary floor to bring it into contact with the refrigerant. CONSTITUTION:When a superconducting substance and a refrigerant are used as a slurry, slurry solution made of the powderlike superconducting substance 4 and the refrigerant 5 is fed by a circulation pump 6 under a magnet 1 to maintain a superconducting state, and lines 2 of magnetic force are shielded by a Meissner effect. Then, the substance is temporarily collected by a filter 3, and only the refrigerant is fed under the magnet. Thus, the Meissner effect is eliminated, and the lines of magnetic force pass directly under the magnet. Thus, the refrigerant is used in a sealing system, and the substance is formed in a slurry state with the refrigerant to freely control the operation of a magnetic field upon movement of the substance. Since it is of the sealing system, the loss amount of the refrigerant is less. Further, the substance 4 of the molding is used as the stationary floor and the refrigerant 5 is passed to the floor, thereby exhibiting superconducting characteristic.

4. 发明专利

JPS6148042B2 失效
公开(公告)号：JPS6148042B2
公开(公告)日：1986-10-22
申请号：JP11994477
申请日：1977-10-07
申请人： HITACHI LTD
发明人： KUNII DAIZO , FURUSAWA TAKEHIKO , HIRATO MIZUHO , HISHINUMA TAKAO , UCHAMA YOSHIHIRO , YOSHIOKA SUSUMU , MYAMOTO KAZUHIKO , YAMAGATA TAKEO , TOMURO JINICHI
IPC分类号： B01D53/56 , B01D53/34 , F23C99/00

5. 发明专利

JPS61207497A METHOD OF SPRAYING SLURRY OF COAL IN WATER 失效
公开(公告)号：JPS61207497A
公开(公告)日：1986-09-13
申请号：JP4834185
申请日：1985-03-13
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： HIGASHIYAMA KAZUHISA , ARASHI NORIO , AZUHATA SHIGERU , NARATO KIYOSHI , SOMA KENICHI , INADA TORU , KOBAYASHI YOSHINOBU , OTSUKA KEIZO , HISHINUMA TAKAO
IPC分类号： C10L1/32
摘要： PURPOSE:To provide the title method capable of forming a fine coalwater spray particles without increase in injection speed from a spray nozzle for improvement in ignitability and combustion characteristics, by adding a specific solid additive to a slurry of a coal in water and conducting a spray combustion of the slurry. CONSTITUTION:In conducting a spray combustion of a slurry of a coal in water, a solid additive of which the thermal decomposition temperature is lower than or substantially the same as that of the coal is previously added to the slurry of a coal in water. The cracked gas generated by the thermal decomposition of the solid additive causes the burst of droplets of the slurry of a coal in water or the dried particles to be burst from the inside thereof. Although the solid additive (e.g.: calcium oxalate) is preferably those having a small solubility in water, those having a relatively large solubility in water may also be used when they can cause the deposition of a solid phase between the coal particles accompanying the evaporation of water and thermally decompose.

6. 发明专利

JPS60173092A COAL GASIFYING OVEN 失效
公开(公告)号：JPS60173092A
公开(公告)日：1985-09-06
申请号：JP2855284
申请日：1984-02-20
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KOYAMA SHIYUNTAROU , MORIHARA ATSUSHI , MATSUO MITSUHIRO , TOMURO JINICHI , NOKITA SHIYUNSUKE , MIYADERA HIROSHI , HISHINUMA TAKAO , NOGUCHI YOSHIKI
IPC分类号： C10J3/46
摘要： PURPOSE:To improve gasifying efficiency and facilitate operational control, by providing an upper burner higher than one half of the height of a gasification chamber and a lower burner lower than one half of the height of the gasification chamber and increasing the proportion of a gasifying agent in the lower part of the chamber. CONSTITUTION:A gas discharge opening 2 having a diameter smaller than the horizontal crossectional area of a gasification chamber 8 is provided at the top of the chamber 8 and another small diameter gas discharge opening 11 is provided at the bottom. Burners 7, 9 which inject mixed fluid of coal and gasifying agent spirally are provided in upper and lower parts of the chamber respectively. The spiral of the mixed fluid injected by the lower burner 9 has a larger radius than that injected by the upper burner 7 and the proportion of the gasifying agent to coal is kept higher in the lower burner 9 than in the upper burner 7. Thus, char is formed in the upper part of the gasifying oven and gas rich in CO2 and H2O is produced in the lower part. The char reacts with the high-temp. gas and resultant gas rich in CO and H2O is taken out through the gas discharge opening 2.

7. 发明专利

JPS60159515A FURNACE SYSTEM 失效
公开(公告)号：JPS60159515A
公开(公告)日：1985-08-21
申请号：JP1184584
申请日：1984-01-27
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： SOUMA KENICHI , ARASHI NORIO , AZUHATA SHIGERU , NARATO KIYOSHI , INADA TOORU , KOBAYASHI YOSHINOBU , OOTSUKA KEIZOU , HISHINUMA TAKAO
IPC分类号： F23N5/00 , F23N5/08 , G01J1/42
摘要： PURPOSE:To carry out correct measurement of the combustion state and combustion control of high accuracy and quick response based on this measurement by utilizing light emitted from the flame, separating the light into an arbitrary specific wavelength zone, and discriminating the combustion state of the combustion flame with non-contact from the luminescent strength and luminescent pattern of the light to control the combustion flame. CONSTITUTION:Light emitted from a flame 650 is collected in a light pick-up device 660, and is introduced to a spectroscope 680 by means of an optical fiber 670. The spectroscope 680 is provided with a converter which converts light signals relative to the luminescent strength and the luminescent pattern into electrical signals. These signals are amplified by an amplifier 690, and introduced into a controller 700. The output signal from the amplifier 670 is compared in a discriminator 710 with an output signal from a memory device 720 which stores the luminescent strength and the luminescent pattern in an arbitrary specific wavelength region at the optimum combustion state time as electrical signals. The output signal from the result of comparison is introduced to a controller 730 outputting a control signal for controlling the combustion state of the flame.

8. 发明专利

JPS6089608A PULVERIZED COAL COMBUSTION BURNER 失效
公开(公告)号：JPS6089608A
公开(公告)日：1985-05-20
申请号：JP19728083
申请日：1983-10-21
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： NARATO KIYOSHI , ARASHI NORIO , AZUHATA SHIGERU , KOBAYASHI YOSHINOBU , INADA TOORU , SOUMA KENICHI , OOTSUKA KEIZOU , HISHINUMA TAKAO
IPC分类号： F23D1/00 , F23D1/02
摘要： PURPOSE:To provide a pulverized coal combustion burner which prevents wearing of a swirl flow generator, enables maintenance of a low NOX and high combustion efficiency for a long time, and has the stabilized performance, by a method wherein the air for combustion is swirled after joining pulverized coal for combustion on the wake flow side of a swirl flow generator. CONSTITUTION:A tertiary air A3 forms a swirl flow by means of a swirl flow generator 14, a secondary mixture flow F2, injected in an outer injection pipe 12 from a fuel feed pipe 15, is drawn in a tertiary air, and the mixture flow forms a swirl flow in a fuel swirl region 16 and is injected in a furnace through the outer injection pipe 12. This enables production of the swirl effect of the secondary mixture flow. Further, the swirl flow generator 14 is so constituted as to pass only the tertiary air A3 for combustion containing no pulverized coal. This prevents wearing of the swirl flow generator 14 due to the passage of pulverized coal, enables maintenance of stable performance (a low NOX effect), and permits substantial contribution to improvement of reliability of a device.

9. 发明专利

JPS6063283A COAL LIQUEFACTION 失效
公开(公告)号：JPS6063283A
公开(公告)日：1985-04-11
申请号：JP17260983
申请日：1983-09-19
申请人： HITACHI LTD
发明人： NISHIMURA MAKOTO , MIYADERA HIROSHI , NOKITA SHIYUNSUKE , HISHINUMA TAKAO
IPC分类号： C10G1/06
摘要： PURPOSE:An aqueous solution of compounds containing Sn and Zn is added to a coal slurry as a catalyst, then coal liquefaction is carried out with high-pressure hydrogen to achieve high-efficiency liquefaction of coal with a small amount of the catalyst, whereby inexpensive liquefied oil is obtained in high yield. CONSTITUTION:First, a solution of compounds containing Sn and/or Zn, preferably potassium stannate, in water or an organic solvent, as a catalyst, is added to a slurry of coal in a solvent, then the slurry is brought into contact with hydrogen under high-temperature and high-pressure conditions to liquefy the coal. The above reaction is effected usually at 100-300 atmospheric pressure and 400-480 deg.C.

10. 发明专利

JPS59229005A COAL GASIFICATION COMPOSITE POWER GENERATING PLANT 失效
公开(公告)号：JPS59229005A
公开(公告)日：1984-12-22
申请号：JP10265083
申请日：1983-06-10
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： ARAKAWA TADAO , NOGUCHI YOSHIKI , HISHINUMA TAKAO , NAGASAKI NOBUO
IPC分类号： F22B1/18 , C10J3/46 , F01K23/02 , F01K23/06 , F01K23/10
摘要： PURPOSE:To improve heat efficiency, by a method wherein a heat is recovered in a manner that the pressure of steam, from which a heat is recovered by a steam generator at the outlet of a gasifying furnace, is increased over the pressure of steam from which a heat is recovered by the gas cooler of the gasifying furnace. CONSTITUTION:A heat recovery system is combined with a system, which recovers exhaust gas 19 from a gas turbine by means of an exhaust heat recovery boiler 20 togetherwith steam, a gas cooler 54 of a drum type steam generator which recovers a radiation heat from a gasifying furnace 3, and a drum type steam generator 7 which recovers the latent heat of gas at the outlet of the gasifying furnace. The drum pressure of the steam generator 7 at the outlet of the gasifying furnace can be increased over the drum pressure of the gas cooler 54 of the gasifying furnace. This enables improvement of heat efficiency.

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