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1. 发明专利

JP2000263002A ORGANIC SUBSTANCE REACTION SYSTEM 失效
公开(公告)号：JP2000263002A
公开(公告)日：2000-09-26
申请号：JP7315999
申请日：1999-03-18
申请人： HITACHI LTD , HITACHI PLANT ENG & CONSTR CO
发明人： KIKUCHI HIRONARI , SAHO NORIHIDE , KUSUMOTO HIROSHI , NISHIOKA AKIRA , TATE TAKAHIRO , SHINDO KIICHI , KAWAJIRI HITOSHI
IPC分类号： B08B9/02 , B01J19/00 , C02F11/06
摘要： PROBLEM TO BE SOLVED: To prevent a brush for cleaning a tubular reactor from stopping in advance by stopping the charge of the brush when an excess amount of a deposit in the reactor which can cause the stop of the brush is detected by providing a means for charging the brush into the reactor and a means for detecting the position of the brush. SOLUTION: Sludge 2 is supplied into a tubular reactor 6 by a pump 3, heated by heat exchange with reaction treatment water in a heat supply device 10. and heated again by a heater 7. The sludge 2 is mixed with oxygen 4 supplied by a compressor 5 and heated by the oxidation reaction heat. A pressure difference at the opening of the reactor 6 is measured by a measuring means 15, and the interval of charging a brush 18 by a charging means 11 is shortened in proportion to the increase of the measured value. When the measured value is greater than a prescribed value, the charge of the brush 18 is stopped because the brush 18 is possibly stopped. When the brush 18 is stopped, the stop position is detected by one of detectors 1.

2. 发明专利

JP2000262885A ORGANIC SUBSTANCE OXIDATION TREATMENT SYSTEM 失效
公开(公告)号：JP2000262885A
公开(公告)日：2000-09-26
申请号：JP7078599
申请日：1999-03-16
申请人： HITACHI LTD , HITACHI PLANT ENG & CONSTR CO
发明人： NISHIOKA AKIRA , KUSUMOTO HIROSHI , SASAO YOSHIFUMI , KIKUCHI HIRONARI , SHINDO KIICHI , TATE TAKAHIRO , KAWAJIRI HITOSHI , ASO SHINJI , MIYABAYASHI TETSUJI
IPC分类号： C02F1/74 , B01J3/00 , C02F11/06
摘要： PROBLEM TO BE SOLVED: To obtain an organic substance oxidation treatment system equipped with an apparatus which can supply a high pressure oxidizing agent at a low cost by separating gas components in a high-temperature, high-pressure fluid after oxidation treatment by a gas-liquid separator and compressing an oxidizing agent gas by an exhaust gas acid driving compressor with the use of the pressure of a separated high-pressure exhaust gas. SOLUTION: Slurry 50 containing organic substances is pressurized by a high pressure pump 1 and supplied to a preheater 2, heated, mixed with high- pressure oxygen, and oxidized in a reactor 3. The reacted fluid 51 heated by the oxidation is sent to a preheater 2 to be used as a heat source. The fluid cooled by heat exchange is set to an ash separator 4. The fluid 64 of only gas and water, with ash removed, after being passed through a reaction system dwell valve 8 and kept at a pressure decided by a back pressure holding valve 9, is sent to a gas-liquid separator 5. A high pressure gas 54 separated as a gas phase is sent to an exhaust gas-driven compressor 7 to be used as a driving source. In this way, an oxidizing agent gas is produced by using the exhaust gas 54.

3. 发明专利

JPH0631815B2 失效
公开(公告)号：JPH0631815B2
公开(公告)日：1994-04-27
申请号：JP8721285
申请日：1985-04-23
申请人： HITACHI LTD
发明人： AKAMINE KAZUHIKO , SHINDO KIICHI , OOSUMI KATSUMI , ITO HISAO
IPC分类号： G21D3/08 , G21C19/30 , G21C19/307

4. 发明专利

JPS63258687A METHOD AND APPARATUS FOR PURIFYING CONDENSED WATER 失效
公开(公告)号：JPS63258687A
公开(公告)日：1988-10-26
申请号：JP9298287
申请日：1987-04-17
申请人： HITACHI LTD
发明人： SAWA TOSHIO , ADACHI TETSURO , SHINDO KIICHI
IPC分类号： C02F1/42
摘要： PURPOSE:To efficiently remove the impurity ion corresponding to the leak of seawater, by injecting a required amount of an ion adsorbing material in a filtering and desalting device when the conductivity and/or chlorine ion concn. of the condensed water in a condenser exceed set values. CONSTITUTION:At first, a conductivity meter 10 and a chlorine ion densitomator 11 are arranged in the hot well of a condenser 5 as means for detecting unexpected mixture of impurity, that is, the leak of seawater at an early stage. By this constitution, when the conductivity and/or chlorine ion concn. of condensed water exceed set values by unexpected mixture of impurity due to the leak of seawater, both values are immediately detected. An operational control circuit 13 emits a signal corresponding to the detection result and the particulate adsorbing material in an ion adsorbing material tank 12 are injected in a filtering and desalting device 9 on the basis of said signal by a pump 14 and suspended to adsorb and remove the impurity. As a result, the impurity ion corresponding to the leak of seawater is purified before entering a nuclear reactor.

5. 发明专利

JPS61175595A NUCLEAR POWER PLANT 失效
公开(公告)号：JPS61175595A
公开(公告)日：1986-08-07
申请号：JP1424785
申请日：1985-01-30
申请人： HITACHI LTD
发明人： KOBAYASHI MASATO , OSUMI KATSUMI , SHINDO KIICHI , ITO HISAO , UCHIDA SHUNSUKE
IPC分类号： G21D3/08

6. 发明专利

JPS62209392A PRIMARY SYSTEM WATER SUPPLY SYSTEM 失效
公开(公告)号：JPS62209392A
公开(公告)日：1987-09-14
申请号：JP5222286
申请日：1986-03-10
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SATO YOSHIAKI , NISHIMURA YUSAKU , USUI NAOSHI , FUKUMOTO TOSHIHIKO , OSUMI KATSUMI , SHINDO KIICHI
IPC分类号： G21C19/307 , G21C19/30

7. 发明专利

JPS6238247A METHOD FOR REGENERATING ION EXCHANGE RESIN 失效
公开(公告)号：JPS6238247A
公开(公告)日：1987-02-19
申请号：JP17587685
申请日：1985-08-12
申请人： HITACHI LTD , HITACHI ENG CO LTD , HITACHI KYOWA KOGYO KK
发明人： OSUMI KATSUMI , MIZUNIWA FUMIO , SHINDO KIICHI , AKAMINE KAZUHIKO , AIZAWA MOTOHIRO
IPC分类号： C02F1/42 , B01J49/00 , G21F9/00 , G21F9/12
摘要： PURPOSE:To reduce the amount of regenerating chemicals and to prolong the life of an ion exchange resin, by regenerating a chelate agent forming a complex along with the metal ion adsorbed by the ion exchange resin by a solution containing regenerating chemicals in an amount equivalent to or slightly more than the metal ion. CONSTITUTION:The chelate agent forming a complex along with the main metal ion adsorbed by an ion exchange resin is regenerated by a solution containing regenerating chemicals in an amount equivalent to or slightly more than the aforementioned metal ion. For example, when the cation exchange resin of a condensation desalting device of a boiling water atomic power plant is regenerated, the amount of the chelate agent contained in the regenerated solution is set to one equal to or more than a mol number necessary for forming a neutral or negative complex along with the metal contained in said ion exchange resin to perform regeneration. The amount of the regenerating solution is suitably adjusted to 1/4-1/2 the amount of the ion exchange resin. Further, it is suitable to perform regeneration by stirring the ion exchange resin and the regenerating solution by air bubbles.

8. 发明专利

JPS61230094A CONTROLLER FOR RADIOACTIVITY OF NUCLEAR POWER PLANT 失效
公开(公告)号：JPS61230094A
公开(公告)日：1986-10-14
申请号：JP7097985
申请日：1985-04-05
申请人： HITACHI LTD
发明人： HIRANUMA HIROSHI , TSUTSUMI KIYOSHI , YOKOYAMA OKANAO , SHINDO KIICHI , KUSUSE SHIGEO
IPC分类号： G21D3/08

9. 发明专利

JPH04193332A APPARATUS FOR BACK-WASHING HOLLOW YARN MEMBRANE 失效
公开(公告)号：JPH04193332A
公开(公告)日：1992-07-13
申请号：JP32283290
申请日：1990-11-28
申请人： HITACHI LTD
发明人： SAWA TOSHIO , FUNABASHI KIYOMI , NISHINO YOSHITAKA , SHINDO KIICHI
IPC分类号： B01D63/02 , B01D65/02
摘要： PURPOSE:To reduce the damage of a membrane surface by dividing the operation at back-washing time, a clad generated in former stage is separated and kept, washing the clad with a diluted water in the next stage, and providing a tank to separate and store the clad generated in the former stage. CONSTITUTION:A storage part 9 holding a clad 7 settled at a lows part of a filter is provided and a dam 10 to allow the storage part 9 to work is provided, and a raw liquid inflowing pipe 11 is provided at an upper place than the storage part 9. In the back-washing by air bubbling in the state that the inside of the filter is fully filled with inflowing water, air is introduced from an air pipe 4 in a module for a constant time and the stuck substances on a hollow yarn membrane are separated. The air is discharged outside the system with vent, etc. On the other hand, the clad separated with the back-washing is isolated in the storage part 9 with naturally settling. Later, air is again introduced in the module and bubbling is carried out. After the back-washing is finished, the clad is conveyed from an outflowing pipe 13 to a clad liquid storage tank 14 outside the system. Thus, the damage of the membrane surface is reduced.

10. 发明专利

JPS6461697A METHOD FOR PREVENTING CONTAMINATION OF FILTER 失效
公开(公告)号：JPS6461697A
公开(公告)日：1989-03-08
申请号：JP21785887
申请日：1987-09-02
申请人： HITACHI LTD
发明人： SAWA TOSHIO , ADACHI TETSURO , SHINDO KIICHI , OSUMI KATSUMI
IPC分类号： G21F9/06 , B01D61/04 , B01D61/16 , B01D65/08 , C02F1/44 , G21F9/00
摘要： PURPOSE:To prevent the clogging of a hollow yarn membrane filter used for removing the impurities in the primary cooling water of an atomic power plant and to extend the life of the membrane with a device for cleaning said filter by injecting an oxide material into the inflow system of the filter. CONSTITUTION:The hollow yarn membrane filter 8 is constituted of a module 9 formed by bundling hollow yarn membranes and is fixed with an outlet hole 11 of the module 9 to an upper flange 10. Condensate 12 flows into the filter 8 from the lower part thereof, permeates the membranes from the outside and flows out of the upper part as permeated water 13. The soluble Fe ions in the inflow condensate 12 in the filter 8 are detected by a detector 14 and a prescribed volume of a hydrogen peroxide soln. is injected from a hydrogen peroxide soln. tank 16 by a pump 17 thereto via a controller 15. The hydrogen peroxide forms ferric hydroxide by reacting with the Fe ions in an inflow pipe 18 and, therefore, the ferric hydroxide is captured by the filter 8. The clogging of the filter by the Fe ions and the increase of the differential pressure by the clogging are thereby prevented.

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