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公开(公告)号：JP2001252658A
公开(公告)日：2001-09-18
申请号：JP2000067421
申请日：2000-03-10
Applicant: TORAY INDUSTRIES
Inventor： FUSAOKA YOSHINARI , KIHARA MASAHIRO , HAYASHI KUNIHIKO , MIYOSHI TOSHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a fresh water generating method using reverse osmotic separation by which the water generating cost is reduced and a stable operation is enabled for a long period. SOLUTION: In this fresh water generating method by which raw water is raised in pressure and fed to plural reverse osmosis membrane module units 2, 4 containing reverse osmosis membrane elements to obtain permeated water, a membrane surface flow rate of raw water is controlled at >=0.03 m/s.
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公开(公告)号：JP2001252542A
公开(公告)日：2001-09-18
申请号：JP2000067415
申请日：2000-03-10
Applicant: TORAY INDUSTRIES
Inventor： OOTO KATSUFUMI , FURUNO SHUJI , KIHARA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a reverse osmosis composite membrane which can hardly decease the quantity of filtrate even when operated under a high pressure. SOLUTION: In the reverse osmosis composite membrane in which a base material 2A, a support membrane 2B having communication holes 2b, and a separation function layer 2C are laminated in turn, when, after a pressure of 9 MPa in the thickness direction is applied to the composite membrane for 3 h and the application is lifted, the average thickness of the composite membrane is T0 (μm), and after a pressure of 15 MPa in the thickness direction is subsequently applied to the composite membrane for 3 h the application is lifted, the average thickness of the composite membrane is T1 (μm), T0 and T1 satisfy formula: 0.8
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公开(公告)号：JP2001252538A
公开(公告)日：2001-09-18
申请号：JP2000067411
申请日：2000-03-10
Applicant: TORAY INDUSTRIES
Inventor： OOTO KATSUFUMI , FURUNO SHUJI , KIHARA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a reverse osmosis composite membrane which is designed to prevent the decrease of the amount of filtrate even when the operation returns from a high pressure stable operation to a low pressure stable operation in the reverse osmosis separation of seawater. SOLUTION: A base material 2A, a support membrane 2B having communication holes 2b, and a separation function layer 2C are laminated in turn to form the reverse osmosis composite membrane. When, after a pressure of 5.5 MPa in the thickness direction is applied to the membrane for 3 h and the application is lifted, the average thickness of the support membrane is t0 (μm), and the permeation coefficient of pure water is P1 (g/cm2.s.MPa), and after a pressure of 10 MPa in the thickness direction is subsequently applied to the membrane for 3 h and the application is lifted, the average thickness of the support membrane is t1 (μm), and the permeation coefficient of pure water is p0 (g/ cm2.s.MPa), t0, p0, t1, and p1 simultaneously meet formulas: 0.7
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公开(公告)号：JPH09141067A
公开(公告)日：1997-06-03
申请号：JP30446895
申请日：1995-11-22
Applicant: TORAY INDUSTRIES
Inventor： KIHARA MASAHIRO , YAMAMURA HIROYUKI , NISHIMURA KAZUHIKO
Abstract: PROBLEM TO BE SOLVED: To provide an excellent liquid separation element without decreasing performance such as the flow rate of a permeated liquid or the inhibiting rate for a wide pressure range from low to high by disposing water-permeable cloth between a reverse osmosis membrane and a passage material for the liquid. SOLUTION: Multifilaments of a polyester fiber are knitted into a double denbidh structure and molten and welded, hardened and calendered to obtain a single tricot with specified width, depth and density of grooves. Further, a nonwoven fabric of a polyester short fiber is calendered to obtain a water- permeable nonwoven fabric having specified thickness, surface average roughness and permeability. The nonwoven fabric is laminated on the groove surface of the single tricot fabric to obtain a passage material for the permeated liquid in such a manner that the orientation direction of the fiber of the nonwoven fabric is perpendicular to the groove direction of the single tricot. The obtd. passage material 10 for the permeated liquid is disposed between two reverse osmosis membranes 1, and then a water-permeable nonwoven fabric 11 is disposed. Thereby, an enough passage can be maintained even under high pressure.
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公开(公告)号：JPH0985059A
公开(公告)日：1997-03-31
申请号：JP24314295
申请日：1995-09-21
Applicant: TORAY INDUSTRIES
Inventor： KIHARA MASAHIRO , YAMAMURA HIROYUKI , INOHARA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To economically obtain fresh water from seawater without wasting energy by the optimization of energy and the enhancement of the utilization efficiency of energy necessary for driving an apparatus by obtaining fresh water from seawater using the heat generated by the incineration of waste. SOLUTION: The reverse osmosis membrane seawater desalting apparatus is constituted by providing at least a waste incineration boiler 1, a part converting heat generated by incinerating waste to power, a steam turbine 2, a dynamo 3, an intake part of supplied seawater 10, a part of a high pressure pump 5 and a part of a reverse osmosis membrane unit 6. The seawater 10 taken in from the intake part is pressurized by the high pressure pump 6 driven by the power obtained by converting the heat generated by the waste incineration boiler 1, which is sent to the reverse osmosis membrane unit 6 to be separated into conc. seawater 11 conc. in salt component and fresh water 12. Heat energy is converted to kinetic energy by the steam turbine 2 to directly operate the high pressure pump 5.
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Patent Agency Ranking
公开(公告)号：JPH06319948A
公开(公告)日：1994-11-22
申请号：JP10699393
申请日：1993-05-07
Applicant: TORAY INDUSTRIES
Inventor： KIHARA MASAHIRO , JIYOU KUNITAKA , OKAZAKI MOTOHIRO
Abstract: PURPOSE:To obtain a good conversion ratio of NOx in an apparatus for treating engine exhaust gas in which a zeolite catalyst is arranged on the upstream side of an exhaust system by arranging a unit for removing water in the exhaust gas consisting of a water vapor separation membrane. CONSTITUTION:In an apparatus for treating engine exhaust gas in which a zeolite catalyst 5 is arranged on the upstream side of an exhaust system, a unit for removing water in the exhaust gas consisting of a water vapor separation membrane 3 is arranged upstream from the zeolite catalyst 5. The membrane 3 is preferably made of a ceramic material. The water content of the exhaust gas discharged from the water removing unit is low enough so that the zeolite catalyst which is arranged on the downstream side of an exhaust system is not deactivated by water. Since the amount of CO and HC, reducing components necessary for the NOx removal of the zeolite catalyst, does not change at all even after passing through the water removing unit, NOx can be removed efficiently.
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公开(公告)号：JPH04285063A
公开(公告)日：1992-10-09
申请号：JP4832191
申请日：1991-03-13
Applicant: TORAY INDUSTRIES
Inventor： KIHARA MASAHIRO , TSURUMI TORU , SUGAWARA HIROMICHI
Abstract: PURPOSE:To obtain a member for crusher such as crushing balls having superior wear resistance, strength and fracture toughness. CONSTITUTION:A member for a crusher is made of Al2O3-based ceramics contg. 20-40wt.% ZrO2 contg. at least 50vol.% tetragonal crystals in the crystal structure, 1-5wt.% TiO2 and 0.1-1wt.% MgO. The average grain diameter of the Al2O3 is 1.5-5mum and at least 80% of the ZrO2 is present at the grain boundaries of the Al2O3.
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公开(公告)号：JPH04243960A
公开(公告)日：1992-09-01
申请号：JP1007091
申请日：1991-01-30
Applicant: TORAY INDUSTRIES
Inventor： KIHARA MASAHIRO , TSURUMI TORU
IPC: C04B35/00 , C04B35/10 , C04B35/56 , C04B35/565 , C04B35/58 , C04B35/584
Abstract: PURPOSE:To provide composite ceramics having excellent strength as well as fracture toughness and suitable as a constituent material for tools such as cutting tool, guides such as yarn guide and magnetic tape guide, sliding parts such as dies part, bearing part and pump part and medical materials such as artificial joint. CONSTITUTION:The objective composite ceramics contain at least one kind of substance selected from an oxide such as Al2O3, a nitride such as Si3N4, a carbide such as SiC and a boride such as TiB2 as main component which does not form a compound with ZrO2. It contains 10-40wt.% of ZrO2 containing >=50vol.% of a tetragonal crystal in the crystal structure. The average crystal particle diameter of the main component is 1.5-10mum and that of ZrO2 is 1.5-3mum and at least 80% of ZrO2 is present on the crystal boundary of the main component.
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公开(公告)号：JPH02229759A
公开(公告)日：1990-09-12
申请号：JP5091589
申请日：1989-03-01
Applicant: TORAY INDUSTRIES
Inventor： KIHARA MASAHIRO , TOKUDA AKIHIRO , TSURUMI TORU
IPC: C04B35/10
Abstract: PURPOSE:To improve mechanical properties by mixing Al2O3 powder with Nb2O3 powder which reacts with the Al2O3 powder to form AlNbO4, calcining the mixture, mixing the resulting calcined powder with ZrO2 contg. solubilized Y2O3, pulverizing, molding and sintering the mixture. CONSTITUTION:Al2O3 powder of =99.9% purity as a base is mixed with such an amt. of Nb2O3 powder of =99.9% purity that 0.07-3.5wt.% AlNbO4 is formed when the Nb2O3 powder reacts with the Al2O3 powder at the time of sintering and the mixture is calcined at 1,000-1,300 deg.C. The resulting calcined powder is mixed with 10-30wt.% ZrO2 powder of 0.05-2mum average particle size contg. 1.5-5mol% solubilized Y2O3 of
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公开(公告)号：JP2003200160A
公开(公告)日：2003-07-15
申请号：JP2002002096
申请日：2002-01-09
Applicant: TORAY INDUSTRIES
Inventor： KIHARA MASAHIRO , NAKANISHI TAKAYUKI , KITADE TAMOTSU
Abstract: PROBLEM TO BE SOLVED: To provide a water making method for stably manufacturing fresh water from seawater in a higher recovery ratio, and a water making apparatus using the same. SOLUTION: In the water making method for supplying water permeated through the front stage membrane module unit among membrane module units, which are arranged in a multistage fashion, to the rear stage membrane module unit to obtain transmitted water, at least a part of raw water, which contains 3.0-4.8 wt.% of salt components in total, calcium ions in a concentration of 200-500 mg/l and sulfate ions in a concentration of 1,500-3,500 mg/l, is treated in the front stage membrane module unit and, after the total concentration of salt components in raw water is adjusted to 55-90% and the concentration of calcium ions in raw water is adjusted to 95% or less, the treated raw water is supplied to the rear stage membrane module unit to obtain permeated water. COPYRIGHT: (C)2003,JPO
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