专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明专利

JPS5673592A SEA WATER DESALTING METHOD UTILIZING COLD SOURCE 失效
公开(公告)号：JPS5673592A
公开(公告)日：1981-06-18
申请号：JP14895179
申请日：1979-11-19
申请人： HITACHI LTD
发明人： EBARA KATSUYA , NISHIMURA SHIGEOKI , ITOU KAZUYUKI , TAKAHASHI SANKICHI
IPC分类号： B01D9/04 , B01D9/02 , C02F1/22 , F25C1/00
摘要： PURPOSE:To eliminate gas-liquid interface, prevent freezing faults and make possible stable operation by discharging the refrigerant gas produced in a crystallizing vessel from a separating and washing vessel, in a sea water desalting method utilizing the LNG cold source. CONSTITUTION:In a crystallizing vessel 61, the raw sea water admitted through a sea water feed pipe 82 and the LNG admitted through an LNG feed pipe 81 are directly contacted to form cryohydrate. The evaporated NG and cryohydrate are passed through a draft pipe 71 and are sent to a separator 62. The flowing force of the NG gas is utilized for this feeding. NG is exhausted from the gas exhaust pipe in the uppermost part of the separating vessel 62. The cryohydrate 86 is floated and separated to the upper part of the vessel and is sent to a thawing vessel 63 via a transport pipe 85. There is no gas-liquid interface on the wall surface in the crystallizing vessel 61, whereby freezing phenomenon may be prevented. In addition, the concn. of cryohydrate may be increased because it is fed into the separating vessel by making use of the flowing power of is formed NG gas.

12. 发明专利

JPS6068092A DESALTER 失效
公开(公告)号：JPS6068092A
公开(公告)日：1985-04-18
申请号：JP17422583
申请日：1983-09-22
申请人： HITACHI LTD
发明人： KUBOTA MASAYOSHI , ITOU KAZUYUKI , NISHIMURA YUUSAKU , EBARA KATSUYA
IPC分类号： C02F1/42 , B01J47/04
摘要： PURPOSE:To increase the desalting efficiency by charging a slurry of an ion- exchange resin into a desalting tower, pressurizing the inside of the tower to carry out pressure filtration of the resin, and discharging the water from the bottom of the tower at a water discharging velocity identical to or higher than the settling velocity of the resin to pack the resin into the tower. CONSTITUTION:A resin slurry 20 and the air 40 are introduced into a desalting tower 1. The water discharging velocity is decreased due to the filtration resistance caused by a resin layer which is formed by the progress of the charging of the resin. Since the inside of the desalting tower 1 is pressurized with the air 40, the water in the slurry is filtered by the resin layer with pressure and discharged from a valve 33V. The water is discharged by the pressure filtration always at a velocity higher than the settling velocity of the resin and the void ratio of the resin is made constant or small to prevent the separation of the resin. The resin mixed at a mixing tower is transferred to the desalting tower 1 with pressure by pressurizing the mixing tower while circulating water.

13. 发明专利

JPS58131114A ELECTROMAGNETIC FILTER 失效
公开(公告)号：JPS58131114A
公开(公告)日：1983-08-04
申请号：JP1152682
申请日：1982-01-29
申请人： HITACHI LTD
发明人： ITOU KAZUYUKI , EBARA KATSUYA , KUBOTA SHIYOUJI , TAKAHASHI SANKICHI , TOMITA SADAMI , TAKASHIMA YOSHIE
IPC分类号： B01D35/06 , B03C1/034
摘要： PURPOSE:To increase the collecting efficiency of magnetic fine particles in a liquid and to facilitate the washing thereof, by a method wherein a magnetic fine wire with a small cross area is molded into a screw form and the interior of the filter tower of an electromagnetic filter is filled with the molded screw shaped magnetic fine wire while an electromagnetic coil is arranged around the filter tower. CONSTITUTION:A magnetic fine wire with a small cross area, for example, having a short diameter of about 30mum and a long diameter of about 70mum is formed into a screw form having a diameter of, for example, about 2mm. and the interior of a filter tower 2 is filled with this screw shaped fine wire 5 through dispersing plates 4, 5. A liquid containing magnetic fine particles is introduced into the filter tower 2 from an arranged pipe 10a and magnetic fine particles are collected by the magnetic fine wire 1 under the action of a high gradient magnetic field while the treated liquid is discharged from an arranged pipe 10b. By this mechanism, the magnetic fine wire holds strength and the interior of the filter tower 2 can be uniformly filled therewith while collected magnetic fine particles can be easily removed out of the filter tower 2 from an arranged pipe 10d by extruding the liquid in the filter tower 2 to the outside at a high flow speed in such a state that values 20a, 20b are closed and valves 20c, 20d are opened.

14. 发明专利

JPS57150445A MIXING TOWER FOR ION EXCHANGE RESIN 失效
公开(公告)号：JPS57150445A
公开(公告)日：1982-09-17
申请号：JP3537181
申请日：1981-03-13
申请人： HITACHI LTD
发明人： ITOU KAZUYUKI , EBARA KATSUYA , NISHIMURA SHIGEOKI , TAKAHASHI SANKICHI , KUBOTA SHIYOUJI
IPC分类号： C02F1/42 , B01J47/04
摘要： PURPOSE:To improve mixing of both ion exchange resins and to improve the performance of a desalting device by providing a vent pipe opened at both ends in a mixing tower, and supplying air into this vent pipe. CONSTITUTION:In a mixing tower 1 which agitates and mixes an anion exchange resin and a cation exchange resin by air of upward stream in liquid, a vent pipe 31 opened at both ends is provided in the tower 1 in such a way that at least one end thereof is under the liquid level of the mixed liquids, and the upward air stream which forces the mixed liquids upward and overflows the same from the top end of the pipe 31 is formed in said pipe. Then, both exchange resins are thoroughly mixed and both resins can be uniformly packed in a desalting device; therefore the performance of the desalting device is improved.

15. 发明专利

JPS5673593A SEA WATER DESALTING APPARATUS BY REFRIGERATING METHOD 失效
公开(公告)号：JPS5673593A
公开(公告)日：1981-06-18
申请号：JP14895279
申请日：1979-11-19
申请人： HITACHI LTD
发明人： NISHIMURA SHIGEOKI , ITOU KAZUYUKI , EBARA KATSUYA , TAKAHASHI SANKICHI
IPC分类号： B01D9/04 , B01D9/02 , C02F1/22 , F25C1/00
摘要： PURPOSE:To prevent the freezing faults on a heat transfer surface of an LNG evaporator and maintain good heat transfer performance by beforehand washing refrigerant gas with condensed refigerant liquid at the time of crystallizing sea water by refrigerant and separating and thawing the ice. CONSTITUTION:In a crystallizing vessel 1, the sea water from a pump 7 and the LNG from a refrigerant lead-in pipe 35 are directly contacted to form cryohydrate. The evaporated LNG gas is admitted to a refrigerant scrubbing tower 36, where it is washed by condensed refrigerant and is removed of the mist contained therein. A packed tower, wetted-wall column, etc. are used for the refrigerant gas scrubbing device. The freezing faults to the heat transfer pipes of LNG evaporator 30 may be prevented by the above-mentioned washing.

16. 发明专利

JPS5673503A CONDENSING METHOD FOR ICE CRYSTAL OF REFRIGERATING AND DESALTING SEA WATER 失效
公开(公告)号：JPS5673503A
公开(公告)日：1981-06-18
申请号：JP14895479
申请日：1979-11-19
申请人： HITACHI LTD
发明人： EBARA KATSUYA , NISHIMURA SHIGEOKI , ITOU KAZUYUKI , MUTSUKUSHI TOSHIKI , TAKAHASHI SANKICHI
IPC分类号： B01D9/04 , B01D9/02
摘要： PURPOSE:To produce plain water at a high yield while obtaining the plain water of high purity with a small amount of washing water by washing ice crystals, obtained from sea water, with produced plain water and then by concentrating ice crystals by dehydrating the ice crystals. CONSTITUTION:Ice crystals 1 crystallized in a crystallization tank by refrigeration desalting and covered with brine liquid film 2 are washed with produced plain water and this washing is stopped right before brine liquid film 2 is completely substituted, namely, when brine liquid film 2 is diluted with the plain water to a certain degree. Next, this diluted water is removed by dehydration to concentrate ice crystals. As a method of dehydration and concentration, a filter press type dehydrator is preferable and using a raising filter having many fine fibers stacked on the surface of the filter material as the filter material improves the efficiency of dehydration excellently.

17. 发明专利

JPS5638191A METHOD AND APPARATUS FOR WASTE WATER TREATMENT 失效
公开(公告)号：JPS5638191A
公开(公告)日：1981-04-13
申请号：JP11293479
申请日：1979-09-05
申请人： HITACHI LTD
发明人： ITOU KAZUYUKI , TAKAHASHI SANKICHI , EBARA KATSUYA
IPC分类号： C02F3/30 , C02F3/34 , C02F9/00
摘要： PURPOSE:To attain the removal of N component and the following sludge in waste water in a high degree without using chemicals, by contacting nitrification regenerating liquid of cation exchanger adsorbed NH4 -N in the waste water with the sludge generated in the waste water treating process and promoting denitrification reaction. CONSTITUTION:Waste water is introduced 2 into the settling pond 1 and supernatant liquid separated from the settling coarse precipitate 22, is sent to the adsorption vessel 5. Then, NH4 -N in the waste water is removed by the ion exchange ability of zeolite in the vessel 5 and the primay treating water is sent to the aeration vessel 14. The activated sludge 23 having COD oxidizing ability, is flowed in the vessel 14 from the settling pond 18 through the ducts 20, 10. Also, the vessel 14 is maintained at an aerobic atmosphere by minute air bubbles containing O2 and organic matter in the waste water is decomposed by oxydation by the sludge 23. Next, said treating water is flowed in the pond 18 with the sludge 23 and the sludge in the treating water is settled and then, the sludge is separated from the supernatant liquid. On the one hand, O2 is supplied to the vessel 5 through the duct 9 and the sludge containing nitrification bacteria, is supplied to the precipitation vessel 15 and then, the zeolite is regenerated.

18. 发明专利

JPS55147107A CONTINUOUS CLEANING DEVICE USING BALL 失效
公开(公告)号：JPS55147107A
公开(公告)日：1980-11-15
申请号：JP2273880
申请日：1980-02-27
申请人： HITACHI LTD
发明人： OGAWA TOSHIO , EBARA KATSUYA , TAKAHASHI SANKICHI , ITOU KAZUYUKI
IPC分类号： B08B3/04
摘要： PURPOSE:To effect sufficient cleaning of very dirty membrane through increased cleaning cycle using balls by a method wherein plural trap/project devices for membrane-cleaning balls are installed in circulation route of a membrane separation unit, and these devices are synchronized with in-route valve operation. CONSTITUTION:Balls are used to clean membrane, pass through route 14, reach the first trapper 100A, and are stopped if the valve 23 is open. If the valve 23 is closed, the balls pass through route 25, 26, enter the second trapper 100B, and are stopped when the recoverer 17 contains balls, then, after the recoverer 17 has discharged the previous balls, enter the recoverer 17. The balls in the recoverer are discharged, at valves 23, 19, 20 open, valves 21, 22, 18 closed, into cleaning route together with raw water. Even if module route is long so that ball circulation time is long, this device allows continuous ball flow for cleaning by switching valves.

19. 发明专利

JPS55129184A WATER MAKING SYSTEM USING LNG COLD SOURCE 失效
公开(公告)号：JPS55129184A
公开(公告)日：1980-10-06
申请号：JP3554979
申请日：1979-03-28
申请人： HITACHI LTD
发明人： EBARA KATSUYA , NISHIMURA SHIGEOKI , ITOU KAZUYUKI , TAKAHASHI SANKICHI
IPC分类号： C02F1/44 , C02F1/22 , C02F1/46 , C02F1/469
摘要： PURPOSE:To obtain freash water with a low salt concn. by melting sea water converted into ice and subjecting the resulting water to reverse osmosis electrodialysis. CONSTITUTION:Sea water is cooled and converted into ice with an ING cold source, and this ice is melted to obtain water. The water thus obtd. usually contains 2,000-3,000ppm of salt, so this water is subjected to reverse osmosis or electrodialysis to obtain high-quality fresh water contg. 100ppm or less of salt.

20. 发明专利

JPS5399666A APPARATUS FOR CIRCULATING WASHING BALLS OF MEMBRANE SURFACE 失效
公开(公告)号：JPS5399666A
公开(公告)日：1978-08-31
申请号：JP1428077
申请日：1977-02-14
申请人： HITACHI LTD
发明人： OGAWA TOSHIO , TAKAHASHI SANKICHI , EBARA KATSUYA , ITOU KAZUYUKI
IPC分类号： B08B9/053 , B08B3/04
摘要： PURPOSE:To save valves used for circulating balls for washing the membrane surface while allowing stable washing and the continuing of stable oepration by setting thereof into a pipe device directly under the recovery device.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式