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61. 发明专利

JPH0217203B2 失效
公开(公告)号：JPH0217203B2
公开(公告)日：1990-04-19
申请号：JP6629285
申请日：1985-03-29
申请人： KURITA WATER IND LTD
发明人： ETO YOSHIHIRO , SAWADA SHIGEKI
IPC分类号： B01D11/04

62. 发明专利

JPH0240220A PURE WATER PRODUCING DEVICE 失效
公开(公告)号：JPH0240220A
公开(公告)日：1990-02-09
申请号：JP18764188
申请日：1988-07-27
申请人： KURITA WATER IND LTD
发明人： ETO YOSHIHIRO , YABE KOICHI
IPC分类号： B01D61/48 , C02F1/44 , C02F1/46
摘要： PURPOSE:To obtain the treated water of superhigh purity by providing a 1st reverse osmosis membrane separator, a 2nd reverse osmosis membrane separator treating the water permeated through the 1st separator, and an electrodialysis unit consisting of alternatively formed concn. and dilution chambers. CONSTITUTION:The device is provided with the 1st reverse osmosis membrane separator (the 1st RO) 1, the 2nd reverse osmosis, membrane separator (the 2nd RO) 2 treating the water permeated through the 1st RO, and the electrodialysis unit (UDI) 3. In this constitution, the raw water, such as city water, is firstly supplied to the 1st RO 1 to remove electrolytes and TOC components. Then, the water permeated through the 1st RO 1 is sent to the 2nd RO 2 where the electrolytes and the TOC components are removed again. In this case, the concentrated water in the 1st RO 1 is discharged through a piping 13 to the outside of the system, and the concentrated water in the 2nd RO 2 is circulated through a piping 15 to the upstream side of the 1st RO 1. The water permeated through the 2nd RO 2 is supplied to the concn. chamber and the dilution chamber through pipings 14a, 14b to be carried out the electrodialysis in the CDI 3. Thus, as the raw water is treated by two stages of RO, the treated water of superhigh purity is obtained.

63. 发明专利

JPH0143594B2 失效
公开(公告)号：JPH0143594B2
公开(公告)日：1989-09-21
申请号：JP4567083
申请日：1983-03-18
申请人： KURITA WATER IND LTD
发明人： ETO YOSHIHIRO , ITO YUKIO , SUZUKI YUMI
IPC分类号： C01B35/02 , C02F1/42 , C02F1/58

64. 发明专利

JPS63209704A FLAT-MEMBRANE TYPE EXTRACTOR 失效
公开(公告)号：JPS63209704A
公开(公告)日：1988-08-31
申请号：JP4467487
申请日：1987-02-27
申请人： KURITA WATER IND LTD
发明人： ETO YOSHIHIRO , OHASHI NORIO
IPC分类号： B01D11/04 , B01D61/00 , B01D63/08
摘要： PURPOSE:To prolong the retention time of liq. circulation and to improve the extraction efficiency by providing a passage extending member to at least one of the first and second chambers separated by a flat membrane. CONSTITUTION:Plural component units each consisting of component members A, B, and C and flat membranes M are laminated, clamped, and fixed. A raffinate (treated liq.) passage 11, stripping agent passages 12 and 14, a passage 13 for a material to be extracted (raw water), and an extractant chamber 15 (second chamber) are formed by the mortised part of the component member A, and a stripping agent can be supplied to and discharged from the extractant chamber 15 through the passages 12 and 14 in the extractor. The passage extending members 21-24 are alternately provided in the horizontal direction in the extractant chamber 15. By such a structure, the liq. retention time can be prolonged, the contact time with the extractant or the stripping agent can be prolonged, and the extraction or stripping efficiency is improved. The flat membrane is also supported by the passage extending members being in contact with the flat membrane M, the expansion of the thin flat membrane due to the liq. pressure is prevented, and the liq. leakage, etc,. can be prevented.

65. 发明专利

JPS6369502A EXTRACTOR 失效
公开(公告)号：JPS6369502A
公开(公告)日：1988-03-29
申请号：JP21246086
申请日：1986-09-09
申请人： KURITA WATER IND LTD
发明人： OHASHI NORIO , ETO YOSHIHIRO
IPC分类号： B01D11/04 , B01D61/00 , B01D63/00 , B01D65/00
摘要： PURPOSE:To solve the problems such as clogging of a pipeline due to the breakage of a solid membrane, etc., resulting in stoppage of operation, by independently carrying out extraction and stripping in each of plural divided regions. CONSTITUTION:The extractor is separated by a partition plate 2 into plural regions 3 and 4, the respective regions 3 and 4 are separated by a solid membrane 30 into at least two chambers, and supply means and discharge means for a material to be extracted, an extractant, and a stripping agent are provided in the respective regions 3 and 4 to independently carry out extraction and stripping. Namely, when extraction becomes impossible in one of the regions 3 and 4 due to the breakage of the membrane 30, the supply and discharge of the material to be extracted, the extractant, and the stripping agent are stopped in that region, the device is repaired, and extraction and stripping can be continued in the other region. Consequently, since the soln. is always passed through the pipeline, the deposition of scales in the pipeline, etc., can be practically eliminated.

66. 发明专利

JPS6349203A EXTRACTOR 失效
公开(公告)号：JPS6349203A
公开(公告)日：1988-03-02
申请号：JP19414986
申请日：1986-08-20
申请人： KURITA WATER IND LTD
发明人： ETO YOSHIHIRO , OHASHI NORIO , KUMAGAI TOSHIO
IPC分类号： B01D11/04 , B01D9/02 , B01D61/14 , B01D61/20 , B01D61/22
摘要： PURPOSE:To prevent the simultaneous drawing off of two liqs. and to continue the extraction by keeping the liq.-liq. interface in the first chamber of the titled extractor within a specified range to maintain the contact time between an extractant and a stripping agent within a specified range. CONSTITUTION:The extractor consists of an extraction means 1 provided with a solid membrane and a crystallization means 2. The crystal and the stripping agent are drawn off from the discharge port 76 of the crystallization means 2, and supplied to a crystal receiver 80 through a pipeline 78. The supernatant liq. in the crystal receiver 80, namely the stripping agent, is supplied to a stripping agent inlet pipeline 62 to the extraction means 1 through a pipeline 86 and a pump 84 so that the interface 20 between the extractant and the stripping agent formed in the first chamber of the extraction means 1 is kept within a specified range based on a detection signal from a sensor 74 for sensing the interface 20.

67. 发明专利

JPS6295103A EXTRACTOR 失效
公开(公告)号：JPS6295103A
公开(公告)日：1987-05-01
申请号：JP23604485
申请日：1985-10-22
申请人： KURITA WATER IND LTD
发明人： ETO YOSHIHIRO , OHASHI NORIO
IPC分类号： C22B3/02 , B01D11/04 , B01D61/00 , B01D61/58 , B01D65/08 , C22B3/20
摘要： PURPOSE:To carry out efficient extraction by arranging a unit extraction part having an extract inlet and a raffinate outlet and an extractant inlet and an extractant outlet and which is used to bring the extract into contact with the extractant through a solid membrane in series and in multiple stages through a pH regulating part. CONSTITUTION:The inside of a cylindrical extractor casing 10 is separated by partition plates 11-16 into an extract introducing chamber 20, the first, the second, and the third extractant chamber 22, 26, and 30, the first and the second pH regulating chamber 24 and 28, and a raffinate discharge chamber 32. Moreover, pipy solid membranes 34, 36, and 38 are provided to communicate the extract introducing chamber 20 with the first pH regulating chamber 24, the chamber 24 with the second pH regulating chamber 28, and the chamber 28 with the raffinate discharge chamber 28, and the chamber 28 with the raffinate discharge chamber 32 and a chamber is provided in the respective insides. Furthermore, the lower part of the first extractant chamber 22 is communicated with the upper part of the second extractant chamber 26, and the lower part of the chamber 26 is communicated with the upper part of the third extractant chamber 30 respectively through connecting pipes 40 and 42. In addition, pH regulator introducing pipes 64 and 66 are connected respectively to the first and the second pH regulating chamber 24 and 28.

68. 发明专利

JPS61234984A DEPHOSPHORIZATION PROCESS 失效
公开(公告)号：JPS61234984A
公开(公告)日：1986-10-20
申请号：JP7367885
申请日：1985-04-08
申请人： KURITA WATER IND LTD
发明人： OHASHI NORIO , SAWADA SHIGEKI , ETO YOSHIHIRO
IPC分类号： C02F1/28 , C02F1/58
摘要： PURPOSE:To remove phosphoric acid ion for a long period at high efficiency in a process for removing phosphoric acid ion utilizing an aluminium compd. by reactivating a particulate material contg. Al with Al salt and adding the waste liquid of the reactivation to the feed water as the Al compd. to be used for the process. CONSTITUTION:Water contg. phosphoric acid ion is passed through a packed layer of particulate material contg. Al such as activated alumina, etc. in the presence of an Al compd. (e.g. AlCl3) and under 3-8.5pH. The packed layer is washed by spreading intermittently with upward stream in the midway of water passing. When the particulate material contg. Al is deactivated, it is reactivated by allowing it to contact with an Al salt such as AlCl3, and the waste liquid of the reactivation is added to the feed liquid as the Al compd. As the result, effective dephosphorization is performed at high percentage of removal for a long period. Separate treatment of the reactivation waste liquid is unnecessary. Thus, effective utilization of resource is realized.

69. 发明专利

JPS61220708A EXTRACTION DEVICE 失效
公开(公告)号：JPS61220708A
公开(公告)日：1986-10-01
申请号：JP6037485
申请日：1985-03-25
申请人： KURITA WATER IND LTD
发明人： ETO YOSHIHIRO , MORITA HIROSHI
IPC分类号： C02F1/26 , B01D11/04 , B01D61/28
摘要： PURPOSE:To prevent emulsification during extraction operation thus improving extraction velocity and extraction efficiency by performing the extraction in a first chamber partitioned by a solid membrane while feeding either one of an extraction feed or a back extraction solvent which are immiscible with each other to the first chamber using a liquid transfer means and another to the second chamber. CONSTITUTION:A first chamber serving as an extraction chamber 28 is formed between partition plates 14 and 20. a tubular solid membrane 30 is provided so as to communicate an extraction feed introducing chamber 18 with an extraction residual liquid discharging chamber 24 partitioned by the partition plates 12 and 20, and the inside of the partitioned section is used as a second chamber. A liquid transfer means 1 comprising a yarn-shaped supporting body is extended vertically from a back extraction agent introducing chamber 16 to a back extraction solvent discharging chamber 26. An extraction solvent is circulated through an introducing port 36, extraction solvent chamber 28, and a discharging port 38 of the extraction solvent. Extraction is performed by allowing the extraction feed introduced from a feed port 44 passing downwards through the second chamber to contact with the extracting solvent through the solid membrane 30. The back extraction solvent having larger specific gravity than the extraction solvent and being immiscible therewith is fed in the form of liquid drops to the extraction solvent chamber 28 along the liquid transfer means 1 from a liquid dropping tube 32 to contact directly with the extraction solvent, to perform thus the extraction.

70. 发明专利

JPS61174989A DEPHOSPHORIZING METHOD 失效
公开(公告)号：JPS61174989A
公开(公告)日：1986-08-06
申请号：JP1612485
申请日：1985-01-30
申请人： KURITA WATER IND LTD
发明人： OHASHI NORIO , SAWADA SHIGEKI , ETO YOSHIHIRO
IPC分类号： C02F1/58
摘要： PURPOSE:To dephosphorize phosphoric ion-contg. water stably and efficiently by passing the water through the packed bed of a granular material contg. Al phosphate at specified pH in the presence of an Al compd., and passing the water through the packed bed of activated alumina at specified pH. CONSTITUTION:Phosphoric ion-contg. water contg. >=10mg/l phosphoric ion is passed through the packed bed of a granular material contg. Al phosphate in the presence of an A compd. such as AlCl3 and at 3.5-5.5pH (the Al compd. to be present is regulated so that the equivalent ratio of the phosphoric ion to the Al ion is adjusted to 1/0.5-1.5). Then the water is passed through the packed bed of activated alumina at 5.5-8.5pH. Consequently, even when the concn. of the phosphoric ion contained in untreated water is comparatively high, the water can be dephosphorized stably and efficiently.

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