-
公开(公告)号：JP2000015062A
公开(公告)日：2000-01-18
申请号：JP18607798
申请日：1998-07-01
Applicant: TORAY INDUSTRIES
Inventor： FUJII YOSHINARI , SAKAI KENJI , NISHIMURA KAZUHIKO
Abstract: PROBLEM TO BE SOLVED: To prevent the leakage of microorganisms such as pathogenic protozoans even when hollow fiber membranes are broken by incorporating a filter of a filter medium whose hole diameter is greater than the pore diameter of the filter membrane of a filter membrane module in the after stage of the module. SOLUTION: Membrane filter raw water is supplied to a filter membrane module 2 by a raw water pump 1, passes through a filter 3 of a filter medium whose hole diameter is greater than the pore diameter of the filter membrane of the module 2, and is taken out as filtrate. In the normal operation of the filter 3, valves 7, 8 are closed, and the filtrate is taken out from a valve 11. In case of the breakage of the filter membrane of the module 2 to cause the accumulation of pathogenic protozoans on the surface of the filter medium. valves 9. 11 are closed, and hot water is supplied from a hot water-washing circulation tank 4 to the filter 3 through valves 8. 10 to be circulated through the valve 7. In this way, the pathogenic protozoans are exterminated.
-
公开(公告)号：JPH1151870A
公开(公告)日：1999-02-26
申请号：JP21168097
申请日：1997-08-06
Applicant: TORAY INDUSTRIES
Inventor： KAMI MAKI , FUJII YOSHINARI
Abstract: PROBLEM TO BE SOLVED: To evaluate the oxidizing power of water containing an oxidation reactive substance totally when various substances are contained by adding a water soluble organic compound having a conjugated double bond to a sample water and measuring variation in the absorbance at a given wavelength. SOLUTION: Oxidizing power of water is evaluated in an oxidation process by adding a water soluble organic compound having a conjugated double bond, preferably having a maximum absorption at a wavelength of 300 nm or above, to a sample and then measuring the absorbance at a given wavelength with time. The evaluation equipment comprises a mixing means 1, e.g. a mixing tank, an absorbance measuring means 2, e.g. a spectrometer, and an information output means 3, e.g. a printer. As a water soluble organic compound having a conjugated double bond, a specified reaction dye is added at a predetermined concentration of 10 mg/ml, for example, to a sample and the absorbance is measured, with time, at the given wavelength e.g. 534 nm, and printed out. It is preferably compared with that of pure water or water prior to oxidation.
-
公开(公告)号：JPH10309590A
公开(公告)日：1998-11-24
申请号：JP11939397
申请日：1997-05-09
Applicant: TORAY INDUSTRIES
Inventor： KAMI MAKI , FUJII YOSHINARI , KURIHARA MASARU
IPC: C02F1/58 , B01J27/055 , C02F1/72 , C02F1/76
Abstract: PROBLEM TO BE SOLVED: To improve a water treating rate and to reduce the consumption of an oxidizing agent by using at least one metal element selected from a group of specific metals such as scandium, titanium, vanadium, chromium, copper and zinc. SOLUTION: At least one metal element selected from a group composed of scandium, titanium, vanadium, chromium, copper, zinc, yttrium, zirconium, niobium, molybdenum, technetium, ruthenium, rhodium, silver, cadmium, lanthanum, hafnium, tantalum, tungsten, rhenium, osmium, iridium, platinum, gold, mercury, actinium, thorium, plutoactinium and uranium is used. Titanium, vanadium, chromium, copper, zinc, zirconium or the like is preferable and particularly copper is preferable. The metal can be directly added in a powdery state as the salt of the metal element especially without being restricted. As the result, the oxidation treating reaction is accelerated.
-
公开(公告)号：JP2560944B2
公开(公告)日：1996-12-04
申请号：JP5367092
申请日：1992-03-12
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI SERYA , FUJII YOSHINARI , UEMURA TADAHIRO
-
公开(公告)号：JPH08219959A
公开(公告)日：1996-08-30
申请号：JP2538495
申请日：1995-02-14
Applicant: TORAY INDUSTRIES
Inventor： MINEGISHI SHINICHI , FUJII YOSHINARI
Abstract: PURPOSE: To test the tensile force of a material in a liquid conveniently with high workability under safe state in view point of sanitation by securing the material (sample), at the lower end thereof, into a tube and, at the upper end thereof, to an upper securing terminal, filling the tube with a liquid and the performing the tension test. CONSTITUTION: The lower end of a material (e.g. hollow fiber membrane sample) 1 is bonded, through an adhesive 4, to a lower securing terminal 5 which is bonded to the lower end of a plastic tube 2. The upper end of the material is bonded, through the adhesive 4, to an upper securing terminal (metal wire) 3. The terminals 3, 5 are fixed to the chuck 6 of a tension test machine and the tube 2 is filled with a liquid, e.g. hexane. Subsequently, the material 1 is ruptured by applying a tensile force and the elongation characteristics in the liquid 7 are evaluated. With such a method, tensile force of the material 1 wetted with the liquid 7 can be tested conveniently with high workability under safe state in view point of sanitation.
-
Patent Agency Ranking
公开(公告)号：JPH07100343A
公开(公告)日：1995-04-18
申请号：JP25040493
申请日：1993-10-06
Applicant: TORAY INDUSTRIES
Inventor： NOYORI MASARU , ISHIZAKI TOSHIYUKI , FUJII YOSHINARI
Abstract: PURPOSE:To product a hollow fiber membrane which suppresses heat shrinkage at high temp. and the decrease of permeant volume and mechanical characteristic being a weak point of a membrane conventionally, and low in shrinkage, large in permeant volume and excellent in mechanical characteristic even if used at a treatment of high temp. soln. to be treated or at high temp. sterilization and to provide its production method. CONSTITUTION:The polyacrylonitrile hollow fiber membrane consisting of the dense layer having = bihydric alcohol and at >=70 deg.C and
-
公开(公告)号：JPH05137984A
公开(公告)日：1993-06-01
申请号：JP30934691
申请日：1991-11-25
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI SERIYA , FUJII YOSHINARI , UEMURA TADAHIRO
Abstract: PURPOSE:To produce a multilayer semipermeable membrane having high separating performance and producing a large amt. of water with a fluorinated hydrocarbon solvent which is noncombustible or has a high flash point, is safe at the time of handling and does not destroy an ozone layer. CONSTITUTION:When a multiplayer semipermeable membrane is produced by interfacial polycondensation of multifunctional amine and multifunctional acyl halide on a porous polymer film, a fluorinated hydrocarbon solvent which is noncombustible or has >=20 deg.C flash point is used as a solvent for the multifunctional acyl halide.
-
公开(公告)号：JPH0426887B2
公开(公告)日：1992-05-08
申请号：JP5536387
申请日：1987-03-12
Applicant: TORAY INDUSTRIES
Inventor： BABA SETSUO , FUJII YOSHINARI , MATSUMOTO SATOSHI
-
公开(公告)号：JPH0347521A
公开(公告)日：1991-02-28
申请号：JP17993189
申请日：1989-07-12
Applicant: TORAY INDUSTRIES
Inventor： AOYAMA MASATOSHI , FUJII YOSHINARI , IWATANI HIDETSUGU
IPC: B01D61/36 , B01D71/34 , B01D71/76 , H01L23/427
Abstract: PURPOSE:To obtain a separation membrane which can be utilized in a membrane distillation type separation method of a liquid-liquid system and a gas-liquid system and is improved in water-permeability by constituting the separation membrane of a hydrophobic porous membrane wherein hydrophilic substance is stuck on the surface of the fine holes. CONSTITUTION:A separation membrane is constituted by sticking hydrophilic substance (e.g. glycerin) on the surfaces of the fine holes of a hydrophobic porous membrane made of polytetrafluoroethylene, etc. The mean pore diameter of the fine holes is preferably regulated to a range within about 20Angstrom and about 0.1mum. Further the rate of amount of stuck hydrophilic substance for the weight of membrane material is preferably regulated to a range within about 0.01-5wt.%. This separation membrane is utilized in the membrane separation method of a liquid-liquid system wherein water contained in liquid is separated while holding the temp. as driving force of separation. Furthermore this separation membrane is utilized in the membrane separation of a gas-liquid system wherein liquid is supplied to the primary side of this membrane and the secondary side is held in a vapor phase and steam passed through this membrane is cooled and collected. As a result, the separation membrane is obtained which is excellent in water-permeability.
-
公开(公告)号：JPH0330663A
公开(公告)日：1991-02-08
申请号：JP16625189
申请日：1989-06-28
Applicant: TORAY INDUSTRIES
Inventor： AOYAMA MASATOSHI , FUJII YOSHINARI
Abstract: PURPOSE:To obtain an alcoholic drink having an alcoholic concentration higher or lower than the starting stock solution by feeding an alcoholic drink on the high temperature side of a hydrophobic porous membrane and feeding the same alcoholic drink or other liquid on the low temperature side of the hydrophobic porous membrane. CONSTITUTION:An alcoholic drink as a starting stock solution is controlled to a prescribed temperature higher than the temperature fed to a secondary side by a heat exchanger 3, and fed to a primary side (high temperature side) of a module 4 provided with a hydrophobic porous membrane capable of prefer entially permeating a volatile organic liquid. On the other hand, after same alcoholic drink fed to the low temperature side or other liquid is controlled to a prescribed temperature lower than that of the fed liquid on the primary side by a heat exchanger 6, the liquor is fed to the secondary side of the above- mentioned module 4. The alcoholic ingredient is permeated from the primary side to the secondary side through the membrane of module 4 to provide the objective drink.
-
-
-
-
-
-
-
-
-
Search Results
60
records
(took 0.026 seconds)
