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This page is updated frequently with new Hollow Fiber Membrane-related patents. Subscribe to the Hollow Fiber Membrane RSS feed to automatically get the update: related Hollow RSS feeds.

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Date/App# patent app List of recent Hollow Fiber Membrane-related patents
04/03/14
20140091024
 Filter member and oxygenator using same patent thumbnailFilter member and oxygenator using same
A filter member used in an oxygenator is constructed to provide improved contact with a hollow fiber membrane bundle and to capture bubbles contained in blood. The filter member possesses elasticity at least in the circumferential direction to allow the inner circumference of the filter member to be increased from a natural non-expanded state prior to placement on the hollow fiber membrane bundle to an expanded state in which the inner circumference of the filter member is increased when placed on the hollow fiber membrane bundle.
03/27/14
20140087069
 Method for repairing hollow fiber membrane patent thumbnailMethod for repairing hollow fiber membrane
A method for repairing a hollow fiber membrane in a module in which ends of a plurality of hollow fiber membranes are secured to a side of the module. A method for repairing a hollow fiber membrane in a module includes bringing a filler material that is in a solid phase into contact with a damaged portion of the hollow fiber membrane, and heating a filler contact site to join the filler material to the hollow fiber membrane, and the filler material is in solid phase..
03/20/14
20140076793
 Pressurized hollow fiber membrane module patent thumbnailPressurized hollow fiber membrane module
Disclosed is a pressurized hollow fiber membrane module that exhibits improved durability without deterioration in packing density and permeation flux. The pressurized hollow fiber membrane module includes a composite hollow fiber membrane comprising a tubular braid woven by yarns and a polymer film on the outer surface of the tubular braid.
03/06/14
20140066682
 Process and apparatus for extracting sulfur compounds in a hydrocarbon stream patent thumbnailProcess and apparatus for extracting sulfur compounds in a hydrocarbon stream
One exemplary embodiment can be a process for extracting sulfur compounds in a hydrocarbon stream. The process can include feeding a hydrocarbon stream containing sulfur compounds to a prewash zone containing an alkali, withdrawing a prewashed hydrocarbon stream from the prewash zone, and feeding the prewashed hydrocarbon stream to a mass transfer zone for extracting one or more thiol compounds from the prewashed hydrocarbon stream.
03/06/14
20140065016
 Paracorporeal respiratory assist lung patent thumbnailParacorporeal respiratory assist lung
A paracorporeal respiratory assist lung is configured with an annular cylindrical hollow fiber membrane (fiber bundle) that is rotated at rapidly varying speeds. Fluid (for example, blood) is introduced to the center of the device and is passed radially through the fiber bundle.
02/27/14
20140054804
 Membrane humidifier for a fuel cell patent thumbnailMembrane humidifier for a fuel cell
The present disclosure provides a membrane humidifier for a fuel cell including: a case; a hollow fiber membrane module covering the case; a housing coupled to both ends of the hollow fiber membrane module; a plurality of hollow fiber membranes arranged in the case; and a hollow fiber membrane guide structure installed at one end or both ends of the hollow fiber membrane module and having a potting material layer formed therein to fix the plurality of hollow fiber membranes.. .
02/27/14
20140054227
 Sugar-immobilized polymer substrate for removing virus and method for removing virus patent thumbnailSugar-immobilized polymer substrate for removing virus and method for removing virus
The present invention provides a sugar-immobilized polymer substrate for removing a virus, the polymer substrate allowing efficient removal of a hepatitis virus or the like in a fluid, and a method for removing a virus. In particular, the present invention provides a sugar-immobilized polymer substrate for removing a hepatitis virus or the like, the polymer substrate allowing, in the case of an application to blood of a living body, reduction in the amount of blood taken out of the body, reduction in the removal amount of blood useful components, low invasiveness, and shortening of the operation cycle; and a method for removing a virus.
02/27/14
20140054214
 Braid welding patent thumbnailBraid welding
A tubular support for use with a hollow fiber membrane is made with an apparatus that comprises a forming machine and an ultrasonic welding machine. The apparatus may also include a coating nozzle for depositing a dope on the support.
02/20/14
20140048473
 Method of potting hollow fiber membranes and apparatus for filtering liquid with hollow fiber membranes patent thumbnailMethod of potting hollow fiber membranes and apparatus for filtering liquid with hollow fiber membranes
A method for potting hollow fiber membranes comprises the steps of forming a bundle of membranes with a layer of adhesive; covering one end of the bundle with a permeate pan, the ends of the membranes protruding upwards into the permeate pan; and flowing a liquid potting material into the permeate pan. The bundle may be tilted to more quickly distribute the liquid potting material.
02/20/14
20140047982
 Gas separation membrane module and method of replacing a hollow fiber element patent thumbnailGas separation membrane module and method of replacing a hollow fiber element
A gas separation membrane module, comprising: a hollow fiber element having a hollow fiber bundle consisting of a number of hollow fiber membranes and a tube sheet provided at an end of the hollow fiber bundle for binding the hollow fiber membranes; a vessel having an opening through which the hollow fiber element is inserted or removed; a lid member having a gas outlet formed therein and attached to cover the opening of the vessel; and a perforated plate having a plurality of through holes for forming gas channels formed therein, the perforated plate being mounted between the tube sheet and the lid member, the gas separation membrane module performing gas separation by supplying mixed gas to the hollow fiber membranes.. .
02/20/14
20140047728
Drying device for hollow fiber membrane
The purpose of the present invention is to provide a drying device capable of preventing entanglement of a hollow fiber membrane in a drying chamber and preventing diameter reduction and flattening of the hollow fiber membrane. This drying device includes the drying chamber having a heating means disposed therein, a guide roll that causes at least two hollow fiber membranes (a) to travel inside the drying chamber, and at least two winding bobbins disposed outside the drying chamber.
02/13/14
20140042096
Separation membrane module for processing of oil-containing waste water and method for processing oil-containing waste water
Provided is a separation membrane module which is suitable for filtration of oil-containing wastewater. The separation membrane module for oil-containing wastewater treatment separates water-insoluble oil from oil-containing wastewater that has high turbidity and/or high temperature.
02/13/14
20140042077
Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro -terpolymer bonded end portion(s)
A hollow fiber membrane fluid transport device is disclosed wherein the fibers are comprised of polytetrafluoroethylene (ptfe), and the potting materials are comprised of fluorocopolymer and or fluoroterpolymer based materials. The potting of the device utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film, allows for ease of manufacture without destruction of the ptfe hollow fibers, with high packing densities, and without the processing complexity of pre-melting, extruding, or chemical crosslinking of any polymeric adhesives.
02/13/14
20140042076
Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro -terpolymer bonded end portion(s)
A hollow fiber membrane fluid transport device is disclosed wherein the fibers are comprised of polytetrafluoroethylene (ptfe), and the potting materials are comprised of fluorocopolymer and or fluoroterpolymer based materials. The potting of the device utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film, allows for ease of manufacture without destruction of the ptfe hollow fibers, with high packing densities, and without the processing complexity of pre-melting, extruding, or chemical crosslinking of any polymeric adhesives.
02/13/14
20140042074
Filtration system
Disclosed is an energy-saving and eco-friendly filtration system which is capable of minimizing the amount of the energy required for the filtration, thereby remarkably reducing the cost of water treatment. The filtration system of the present invention comprises: a feed water tank for storing a feed water to be treated; a hollow fiber membrane module for filtering the feed water supplied from the feed water tank; and a filtrate tank for storing a filtrate produced by the hollow fiber membrane module, wherein the hollow fiber membrane module comprises a plurality of hollow fiber membranes for filtering the feed water, and the sum of head pressure of the feed water in the feed water tank and water pressure of the filtrate in accordance with siphon principle is higher than the threshold membrane pressure of the hollow fiber membranes..
02/13/14
20140041789
Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro -terpolymer bonded end portion(s) and method to fabricate
A hollow fiber membrane fluid transport device's method of manufacture is disclosed wherein the fibers are comprised of polytetrafluoroethylene (ptfe), and the potting materials are comprised of fluoropolymer based materials. The potting method described herein, utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film, allows for ease of manufacture without destruction of the ptfe hollow fibers, with high packing densities, and without the processing complexity of pre-melting, extruding, or chemical crosslinking of any polymeric adhesives.
02/13/14
20140041788
Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro -terpolymer bonded end portion(s)
A hollow fiber membrane fluid transport device's method of manufacture is disclosed wherein the fibers are comprised of polytetrafluoroethylene (ptfe), and the potting materials are comprised of fluoropolymer based materials. The potting method described herein, utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film, allows for ease of manufacture without destruction of the ptfe hollow fibers, with high packing densities, and without the processing complexity of pre-melting, extruding, or chemical crosslinking of any polymeric adhesives.
02/13/14
20140041699
Device for cleaning porous hollow fiber membrane
The present invention is a device that is for cleaning a porous hollow fiber membrane by running the porous hollow fiber membrane through a cleaning tank containing a cleaning liquid, thus eliminating residual substances in the porous hollow fiber membrane, wherein the inside of the cleaning tank is provided with a duct structure having a hollow fiber membrane running path at which the porous hollow fiber membrane can be continuously run through from an entrance at one end towards an exit at the other end; the duct structure comprises at least two structures that can separate; the duct structure has a running groove, which is formed to at least one structure of the at least two structures, and a branched duct, which pumps or sucks the cleaning fluid to cause the cleaning fluid to flow through; and the branched duct is a duct that is connected to the running groove. By means of the present invention, it is possible to provide a device that is for cleaning a porous hollow fiber membrane and that is highly efficient, is able to be easily maintained, and can dispose the porous hollow fiber membrane easily and efficiently..
01/30/14
20140030149
Oxygenator and extracorporeal circuit
An oxygenator includes: a housing; a hollow fiber membrane bundle stored in the housing and having multiple integrated hollow fiber membranes with a gas exchange function; a gas inlet portion and a gas outlet portion provided on the upstream and downstream of gas passages in lumens of the hollow fiber membranes, respectively; a blood inlet portion and a blood outlet portion provided on the upstream and downstream of blood passages outside the hollow fiber membranes, respectively; a first filter member provided on the hollow fiber membrane bundle in contact with a blood outlet portion side surface so as to cover substantially the entire surface and has a function to catch bubbles in blood; and a second filter member that is separated from the first filter member, positioned between the first filter member and the blood outlet portion, and has a function to catch bubbles in blood.. .
01/30/14
20140030146
Oxygenator
An oxygenator includes a housing; a hollow fiber membrane layer that is stored in the housing and has multiple integrated hollow fiber membranes with a gas exchange function; a gas inlet portion and a gas outlet portion that are provided on the upstream and downstream of gas passages in lumens of the hollow fiber membranes, respectively; and a blood inlet portion and a blood outlet portion that are provided on the upstream and downstream of blood passages outsides of the hollow fiber membranes, respectively. The hollow fiber membranes in the hollow fiber membrane layer are fixed relative to each other at one end portion and the other end portion thereof.
01/30/14
20140027360
Filtration apparatus and hollow fiber membrane module therefor
Disclosed are a filtration apparatus having the advantages of conventional pressurized-type and submerged-type filtration apparatuses and a hollow fiber membrane module therefor. The filtration apparatus of the present invention comprises: a tank into which feed water is to be introduced, the tank comprising first and second inner step surfaces arranged opposite to each other; and a hollow fiber membrane module to be submerged in the feed water introduced in the tank, the hollow fiber membrane module comprising first and second headers and a hollow fiber membrane therebetween, wherein first and second ends of the first header are supported by the first and second inner step surfaces respectively..
01/23/14
20140021134
Filter and method for the desalination of water by means of reverse osmosis of the centrifugal type, involving the generation of dean vortices
This invention concerns a method for desalination of sea water and a design and construction of a centrifugal filter for desalination of water. The process uses the filter developed based on reverse osmosis technology as a fundamental component that uses hollow fiber membrane modules arranged in a spiral manner around a central support pipe and distributed in concentric rings around the periphery of the rotating section to favor the formation of dean vortices.
01/23/14
20140021099
System and method for continuous removal of water from oil via membrane separation
An oil circulation system and method for continuously purifying engine oil including an engine operably connected to an oil reservoir, wherein at least one stream of oil is conveyed from the oil reservoir to the engine via a conduit, and circulated through the engine and conduit via engine operating pressure and/or one or more pumps, and at least one membrane unit positioned in a path of the oil stream such that oil containing dissolved/emulsified droplets of water is fed continuously through the membrane unit. A cross flow hollow fiber module adapted to be positioned in a system for continuously purifying engine oil, the hollow fiber module having a central feed distributor tube, hollow fiber membranes positioned around the central feed distributor tube, end caps with ports for receiving and emitting a flow of sweep air, and optionally a shell casing, wherein the central feed distributor tube includes openings sized and positioned to allow oil to flowing into the feed distributor tube to flow out radially..
01/16/14
20140015545
Method for inspecting hollow fiber filtration modules
Analyze a hollow fiber filter module for defects by providing a membrane header assembly with a header having a conduit defined there-through by a wall with multiple holes and a hollow fiber membrane inserted into a hole, directing a probe device with a sensor through the conduit, receiving sensory response information with the sensor, the sensory response information containing information sufficient to identify defect in the form of a hole lacking a hollow fiber membrane, a hole that has a hollow fiber membrane inserted to a non-desired depth, or both and then interpreting the sensory response information to detect such defects if they exist.. .
01/09/14
20140008292
Forward osmosis hollow fiber membrane
Present invention relates to a method for forming a nanofiltration hollow fiber membrane comprising a poly(amide-imide) (pai) hollow fiber substrate having a polyethyleneimine (pei)-cross-linked pai surface layer. This membrane is suitable for forward osmosis applications.
01/02/14
20140001115
Hollow fiber membrane and method for manufacturing thereof
The present invention concerns a semipermeable hollow fiber membrane having an outer wall surface, an inner wall surface and an interior lumen extending along the length thereof and having the selective layer on the outer wall surface with a surface roughness below 10 nm. According to the invention the membrane has the smallest pore size on the outer wall surface, and has an outer wall surface which is smooth, continuous and homogeneous in a nanoscopic scale and four to five distinct layers of different pore size and density.
12/26/13
20130343954
Compact integrated blood pump oxygenator or gas transfer device with hydrogel impeller packing material and rollover impeller outlet
An integrated blood pump oxygenator comprises an an impeller housing supporting an impeller; with an annular hydrogel impeller packing material adjacent the bearings and around the shaft of the impeller. The oxygenator including a rollover outlet in the form of an annular chamber extending around a center pump housing member; and further including an annular chamber within an annular array of hollow fiber membranes in fluid communication with the annular chamber extending from the impeller around the center pump housing; wherein the annular chamber provides substantially perpendicular radial outward cross flow across the membranes..
12/12/13
20130327697
Hollow fiber membrane module
A hollow fiber membrane module in which a housing body forming the hollow fiber membrane module includes an insertion opening into which end parts of the plurality of hollow fiber membranes are inserted so as to be fixed and held, and an opening portion which exposes open end surfaces of a plurality of hollow fiber membranes inserted from the insertion opening to outside, and a cover that blocks the opening portion of the housing body. According to the present invention, it is possible to provide a housing enabling open end surfaces of hollow fiber membranes to be sealed by easily exposing the open end surfaces of the hollow fiber membranes when the hollow fiber membranes are damaged..
11/28/13
20130313739
Membrane-forming dope solution for carbon membranes and method for producing carbon hollow fiber membranes using the same
A membrane-forming dope solution for carbon membranes, comprising a polyphenyleneoxide polymer, ammonium nitrate, and a solvent having a boiling point of 100° c. Or more and being capable of dissolving these components; the membrane-forming dope solution having a concentration of the polyphenyleneoxide polymer of 20 to 40 wt.
11/21/13
20130307171
Washing device for porous hollow fiber membranes, and porous hollow fiber membrane production method
This invention relates to a washing device for a porous hollow fiber membrane, including: n (n is an integer of 2 or greater) washing tanks that contain a washing liquid, through which the porous hollow fiber membrane sequentially passes; and at least one pressure applying unit that pressurizes or de-pressurizes the washing liquid on the outer side of the porous hollow fiber membrane immersed in the washing liquid to force the washing liquid to pass through a membrane part of the porous hollow fiber membrane, in which the pressure applying unit is accommodated in at least one of the first to (n−1)-th washing tanks. According to the invention, it is possible to provide a porous hollow fiber membrane production method that is capable of reducing the concentration of residual substances in membrane retained water and preventing reattachment of a hydrophilic polymer..
11/21/13
20130306545
Adsorption/separation membrane module, method for producing adsorption/separation membrane module, and partition member
The hollow fiber membrane module has a hollow fiber membrane bundle composed of a plurality of hollow fiber membranes with an adsorption function, a housing that houses the hollow fiber membrane bundle, and partition members that partition the hollow fiber membrane bundle into a plurality of small bundles at an end of the hollow fiber membrane bundle, the partition members having penetrating sections that penetrate in the lengthwise direction of the hollow fiber membranes. The volume fill factor of the hollow fiber membranes is at least 30% and less than 70%.
11/21/13
20130306544
Medical material and hollow fiber membrane module
The present invention provides a medical material and a blood purification apparatus each having high anti-thrombotic properties and high safety. The apparatus is produced by incorporating therein a medical material which has a hydrophilic copolymerization polymer present on a surface thereof which is to be in contact with blood, wherein particulate protuberances each having a particle diameter of 50 nm or more are present on the surface which is to be in contact with blood at a density of 3 particles/μm2 or less and the relaxation time of adsorbed water in the hydrophilic copolymerization polymer is 2.5×10−8 seconds or shorter and 5.0×10−10 seconds or longer at −40° c..
11/07/13
20130295659
Closed type photo-bio reacting apparatus for microalgae
Disclosed is a closed type photo-bio reacting apparatus for microalgae. The apparatus includes a reactor body, a hollow fiber membrane contact unit, a fluid circulating pump, a light source, and an angle adjusting lift.
11/07/13
20130294790
Apparatus for detecting a toner density of a liquid developer
A deaerator and a density detector are provided in a liquid developer circulating path through which the liquid developer in a main tank is circulated, wherein the deaerator includes a bundle of hollow fibers each forming a hollow fiber membrane whose inside is depressurized and over whose outer peripheral surface the liquid developer is forced to flow under pressure, thereby sufficiently removing dissolved air in the liquid developer, and a toner density of the liquid developer is detected when the liquid developer of which dissolved air is sufficiently removed is passed through the density detector utilizing ultrasonic waves, making it possible to detect the toner density with a high degree of precision.. .
11/07/13
20130292860
Hollow fiber membrane spinning nozzle, and method for manufacturing hollow fiber membrane
A hollow fiber membrane-spinning nozzle that spins a hollow fiber membrane having a porous membrane layer and a support is provided in which the nozzle includes a resin flow channel through which a membrane-forming resin solution forming the porous membrane layer flows, the resin flow channel includes a liquid storage section that stores the membrane-forming resin solution and a shaping section that shapes the membrane-forming resin solution in a cylindrical shape and satisfies at least one of conditions (a) to (c): (a) the resin flow channel is disposed to cause the membrane-forming resin solution to branch and merge; (b) a delay means for delaying the flow of the membrane-forming resin solution is disposed in the resin flow channel; and (c) the liquid storage section or the shaping section includes branching and merging means for the membrane-forming resin solution therein.. .
11/07/13
20130291360
Hollow fiber membrane module and puller used therefor
A hollow fiber membrane module and a puller used therefore is disclosed, wherein each individual hollow fiber membrane module can be easily pulled out from a filtering apparatus provided with a plurality of hollow fiber membrane modules if it is required to be replaced or repaired. At this time, the hollow fiber membrane module comprises a hollow fiber membrane; and at least one header to which the hollow fiber membrane is potted, wherein the header includes a first lateral side to which the hollow fiber membrane is potted and a second lateral side opposite to the first lateral side, and wherein an engaging plate is formed at the second lateral side.
10/24/13
20130280767
Hollow fiber membrane module and method for producing chemical substance
A hollow fiber membrane module includes a housing, a hollow fiber membrane sealed in the housing and a sealing agent in a space between the hollow fiber membrane and the housing, wherein 1) the hollow fiber membrane is made of a polysulfone based resin; 2) a membrane surface average pore diameter is 5 nm or more and 500 nm or less; 3) a pure water permeability coefficient under 50 kpa at 25° c. Is 0.05 m3/m2/hour or more and 5 m3/m2/hour or less; 4) the sealing agent is at least one selected from the group consisting of a polyurethane resin and an epoxy resin; and 5) a decrease in tensile strength after bringing the sealing agent into contact with saturated steam at 121° c.
10/24/13
20130277878
Permselective membrane and process for manufacturing thereof
A method for preparing by solvent phase inversion spinning a hollow fiber membrane suitable for dialysis. The membrane includes at least one hydrophobic polymer and at least one hydrophilic polymer.
10/10/13
20130264254
Oil-containing wastewater treatment system
The oil-containing wastewater treatment system includes a separation tank that separates oil by flotation, the separation tank being arranged in a supply path of raw water which is oil-containing wastewater; a membrane filtration tank that is arranged on the downstream of the separation tank and that includes therein a membrane separation module including a hollow fiber membrane or a flat sheet membrane, and a diffuser for generating air bubbles, the diffuser being disposed below the membrane separation module; a supply pipe that supplies the raw water from the separation tank to the membrane filtration tank through a circulating pump; and a return pipe that returns unfiltered water containing the oil and air bubbles from the membrane filtration tank to the separation tank.. .
10/10/13
20130264251
Membrane module protection
In accordance with aspects and embodiments, a filtration system is provided comprising a membrane module comprising an upper header and a lower header, a plurality of hollow fiber membranes having an upper end potted in the upper header and a lower end potted in the lower head, a cage at least partially surrounding the plurality of hollow fiber membranes, and a screen in contact with and surrounding the cage, the filtration system further comprising an aeration cap coupled to the lower header of the membrane module. The screen may protect the hollow fiber membranes from damage from coarse contaminants contained in the feed liquid, may improve module integrity, and may improve the efficiency of the filtration system..
10/03/13
20130255488
Method and apparatus for rapid adsorption-desorption co2 capture
An apparatus for capture and sequestration of co2 from fossil fuel-fired power plant flue gas includes a polymer matrix embedded with a sorbent suitable for removing co2 from the flue gas and a spacer mated with the polymer matrix. The spacer is adapted to create channels between adjacent portions of the polymer matrix such that the flue gas flows through the channels and comes in contact with the sorbent.
09/26/13
20130248441
Preparation method of hollow fiber membrane for water treatment using cellulose-based resin
The present disclosure relates to a preparation method of a hollow fiber membrane for water treatment that involves preparing a spinning composition including a cellulose-based resin, a poor solvent, a plasticizer, and an organic solvent and then spinning the spinning composition on a nonsolvent to form a hollow fiber membrane. Accordingly, the present disclosure overcomes the drawbacks of the conventional preparation method for hollow fiber membranes and thus provides a nano-filter (nf), reverse osmosis (ro) hollow fiber membrane for water treatment that easily enhances the properties of the separation membrane for water treatment and secures high reproducibility and high efficiency at low costs..
09/26/13
20130248440
Tubular braid, hollow fiber membrane using the same, and manufacturing method thereof
A tubular braid, a hollow fiber membrane using the same, and a manufacturing method thereof. A hollow fiber membrane can maximize or increase adhesion between a polymer coating film and a tubular braid; significantly reduce degradation of film properties caused by non-uniform coating, that is, reduce leakage; obtain a higher percent rejection; and achieve high water permeability since the hollow fiber membrane has a larger inner diameter..
09/19/13
20130240445
Polyphenol-type polymer coating of filtration membranes
A filtration membrane is coated with a polymer made from a compound comprising a benzenediol or a substituted phenol, such as catechol. The polymer deposition process comprises exposing the membrane to the compound in an aqueous alkaline solution.
09/19/13
20130240436
Method for sealing hollow fiber membranes
The present invention is directed to a method of sealing the free end of a hollow fiber membrane for use in a single header filtration module by dipping the end of the membrane into a low-viscosity light-curable adhesive and curing the adhesive. The invention further encompasses the resulting sealed hollow fiber membrane with a diameter that is only slightly larger than the diameter of the unsealed membrane..
09/19/13
20130239805
Methods of preparing a crossliked fiber membrane
Disclosed herein is a method for preparing a crosslinked hollow fiber membrane. The method involves spinning a one phase solution comprising a monoesterified polyimide polymer, acetone as a volatile solvent, a spinning solvent, a spinning non-solvent, and optionally an organic and/or inorganic additive, wherein the volatile solvent is present in an amount of greater than 25 wt.
09/12/13
20130233130
Process for extracting aluminum from aluminous ores
There is provided a method for extracting aluminum ions from argillite. The process comprises leaching the argillite with an acid such as hcl so as to obtain a composition comprising the aluminum ions and iron ions; at least partially removing the iron ions from the composition by substantially selectively precipitating the iron ions by adding a base and at least partially removing the precipitated iron ions so as to obtain an al-rich composition; and optionally purifying the al-rich composition by adding a base for substantially selectively precipitating the aluminum ions, by means of a hollow fiber membrane, or by a liquid-liquid extraction..
09/05/13
20130230436
Hollow fiber membrane separator with integral ozone converter
A modular component is provided for use in a system for inerting void spaces in aircraft. The modular component is comprised of a hollow fiber membrane and tubesheet bundle, a low-temperature ozone converter, a hollow fiber membrane shell, and separator endcaps.
08/22/13
20130213887
Hollow fiber membrane filtration device and method for washing hollow fiber membrane module
The present invention provides a hollow fiber membrane filtration device including a hollow fiber membrane module in which a hollow fiber membrane bundle formed of a plurality of hollow fiber membranes is inserted into a cylindrical case having a plurality of side nozzles at a side surface of the cylindrical case, provided with a water feed/drainage function, an upper-end nozzle on an upper-end face of the cylindrical case, provided with a water feed/drainage function and a lower-end nozzle on a lower-end face of the cylindrical case, provided with a water feed/drainage function, and at least one-sided end of the hollow fiber membrane bundle is fixed to the cylindrical case by bonding with resin in a position higher than any of positions of the plurality of side nozzles, in which at least two of the plurality of side nozzles are communicated with each other through a piping.. .
08/22/13
20130213875
High flux hollow fiber ultrafiltration membranes and process for the preparation thereof
The present invention relates to the production of high flux hollow fiber ultrafiltration membrane prepared from poly(acrylonitrile-co-methacrylic acid), (polysulfone and poly(acrylonitrile-co-methacrylic acid)) and (polysulfone and ion exchange resin (sulfonated polystyrene-divinyl benzene copolymer)) blend and the point-of-use filtration unit there from for water purification and disinfection. The produced membrane has an active layer with pore size which effectively rejects pathogens and other bacteria from contaminated water while allowing the passage of water to produce biologically pure water for drinking.
08/15/13
20130210596
Method for producing hollow fiber membrane sheet-like object, method for producing hollow fiber membrane module, and device for producing hollow fiber membrane sheet-like object
The present invention relates to a method for producing a hollow fiber membrane sheet-like object including: a connecting process of forming a ring-shaped section by winding a hollow fiber membrane capable of being continuously supplied, around two or more rolls so as to surround the two or more rolls and connecting a leading end portion of the wound hollow fiber membrane and an adjacent hollow fiber membrane, or of putting a ring-shaped section created in advance, on two or more rolls, and connecting a leading end portion of a hollow fiber membrane capable of being continuously supplied, to the ring-shaped section; a winding process of winding the hollow fiber membrane around the rolls by moving the leading end portion of the hollow fiber membrane by rotating at least one roll of the two or more rolls; a fixing process of forming a fixed section by fixing the hollow fiber membrane wound around the two or more rolls, into the form of a sheet in a width direction; and a cutting process of performing cutting-out along the fixed section, thereby obtaining a sheet-like object to which end portions of the hollow fiber membranes are connected in the width direction. According to the present invention, a hollow fiber membrane sheet-like object can be produced with a simple configuration and a change in sheet length can be easily performed..
08/15/13
20130205873
Device and process for testing hollow fibre membrane filters
A process and a device for testing a hollow fiber membrane filter comprises two compartments separated by a porous membrane. A specific amount of testing liquid is provided via a line from a testing liquid reservoir..
08/08/13
20130199994
Submerged hollow fiber membrane module
The present invention relates to a submerged hollow fiber membrane module that includes a partition membrane having a slanted slit-shaped opening, and thus capable of not only improving operating efficiency of a hollow fiber membrane module by accelerating the water flow, but also allowing easy discharge of highly concentrated raw water around the hollow fiber membrane to the outside of the module during a reverse wash process.. .
07/04/13
20130168007
Method to make yarn-reinforced hollow fiber membranes around a soluble core
Disclosed is the method for creating a reinforced hollow fiber membrane by applying reinforcing filaments to a core, casting a dope over the filaments and core, forming a membrane from the dope, and removing the core. The core may be a moving core, and the reinforcing yarns may comprise warp yarns and a spiral wrap yarn.
06/20/13
20130153490
Hollow fibre membrane with compatible reinforcements
A process of making a reinforced hollow fiber membrane comprises flowing a membrane dope through a casting head while drawing one or more yarns or tows of filaments through the casting head. The filaments are spread apart in the casting head, for example by forcing the yarns or tows around a bend or through a narrow gap in the casting head.
06/20/13
20130152793
Stabilization of porous morphologies for high performance carbon molecular sieve hollow fiber membranes
Carbon molecular sieves (cms) membranes having improved thermal and/or mechanical properties are disclosed herein. In one embodiment, a carbon molecular sieve membrane for separating a first and one or more second gases from a feed mixture of the first gas and one or more second gases comprises a hollow filamentary carbon core and a thermally stabilized polymer precursor disposed on at least an outer portion of the core.
06/13/13
20130149634
Method and device for producing a membrane module for a fuel cell and membrane modules produced thereby
Disclosed is a method and device for producing a membrane module used in a membrane humidifier for humidifying air in a polymer fuel cell, in which a small amount of hollow fiber membranes are disposed in the center of the membrane module and a larger amount of hollow fiber membranes are disposed toward the edge based on the design of a potting cap. Dry air introduced from an air blower into the membrane can be distributed to the edge where the larger amount of hollow fiber membranes are disposed, thereby maintaining uniform humidification performance over the entire hollow fiber membranes..
06/13/13
20130146518
Hollow fiber membrane module with miniskeins in miniheaders having a zig-zag configuration
A module of hollow fiber membranes is re-configured to break up and rearrange a skein into multiple miniskeins each having no more than 250 fibers, all lower miniheaders of the miniskeins being slidably held for vertical movement in vertical slots in an aerator box. Upon shrinkage of the fibers, the lower miniheaders rise in the box.
05/30/13
20130137005
Humidifier for fuel cell
Disclosed is a humidifier for a fuel cell having an enhanced humidifying performance and thus being able to prevent an instantaneous decrease of the output of a car which might occur at the time of high-speed driving. The humidifier comprises a membrane housing with first and second ends; a bundle of hollow fiber membranes provided in an inner space of the membrane housing, wherein both ends of the hollow fiber membrane are respectively potted into the first and second ends of the membrane housing; a humidity retainer provided in the inner space of the membrane housing; a first cover mounted on the first end of the membrane housing, the first cover including an inlet for introducing unreacted gas of high-humidity discharged from a stack; and a second cover mounted on the second end of the membrane housing, the second cover including an outlet for discharging the unreacted gas used for humidification..
05/09/13
20130112614
Monofilament-reinforced hollow fiber membrane with scalloped lumen
The embedded spiral weave, free of any circumferentially constricting monofilament, allows the membrane to be biaxially distensible. The membrane has “give” not only in the axial or longitudinal direction but also in the radial direction.
05/02/13
20130104416
Drying device and drying method for hollow fiber membranes
Disclosed is a drying device for a hollow fiber membrane, including: a tubular drying member that is formed with an opening portion through which a hollow fiber membrane is input and output at at least one end thereof in a length direction, the hollow fiber membrane passing inside the tubular drying member while forming a gap between the hollow fiber membrane and an inner circumferential surface of the tubular drying member; and a gas supply unit that is formed on a side surface of the tubular drying member and supplies a drying gas into the tubular drying member. Thus, it is possible to dry the hollow fiber membrane in a short time at a low cost without the necessity of large equipment..
04/11/13
20130086872
Apparatus and methods for manufacturing fiber bundles
An apparatus for the reeling up of fiber bundles, in particular of hollow fiber membrane bundles, and in particular for the manufacture of dialysis filters, includes a reel carrier rotatable around a main axis. The apparatus includes at least two reels which are rotatably supported on the reel carrier, with the axes of rotation of the reels being perpendicular to the main axis of the reel carrier.
04/04/13
20130081537
Hollow fiber apparatus and use thereof for fluids separations and heat and mass transfers
A hollow fiber fluid separation device includes a hollow fiber cartridge, comprising a plurality of hollow fiber membranes arranged around a central tubular core, a first tubesheet and a second tubesheet encapsulating respective distal ends of the hollow fiber bundle. The tubesheets have boreholes in fluid communication with bores of the hollow fiber membrane.
03/14/13
20130065140
Membrane humidifier for fuel cell
Disclosed is a membrane humidifier for a fuel cell, which uniformly humidifies entire hollow fiber membranes from an outer side to a central portion of an interior of the membrane humidifier to improve the distribution of wet air and dry air, thereby improving a humidification performance. The membrane humidifier for the fuel cell includes a hollow upper case including first wet air inlet apertures and first wet air outlet apertures and a membrane module assembly including a plurality of unit membrane modules received lengthwise within the upper case along the flow direction of dry air..
02/21/13
20130043187
Hollow fiber membrane module for use in a tubular pressure vessel
A hollow fiber membrane element may be used in a pressure vessel similar to those used with spiral wound elements, optionally as a replacement for a spiral wound element. A connecting sleeve is used to connect the insides of adjacent elements to each other or to one or more fittings in communication with the outside of the pressure vessel.
02/14/13
20130039837
Method for the continuous recovery of carbon dioxide from acidified seawater
A method for recovering carbon dioxide from acidified seawater using a membrane contactor and passing seawater with a ph less than or equal to 6 over the outside of a hollow fiber membrane tube while applying vacuum or a hydrogen sweep gas to the inside of the hollow fiber membrane tube, wherein up to 92% of the re-equilibrated [co2]t is removed from the natural seawater.. .
01/24/13
20130020250
Filter module
The present invention relates to a filter module and to a method of manufacturing a hollow fiber membrane bundle having at least two concentrically arranged filter stages. The present invention furthermore relates to a method of manufacturing a hollow fiber membrane bundle, to a disposable and to a blood treatment apparatus..
01/24/13
20130019748
Asymmetric hollow fiber gas separation membrane
The present invention relates to an asymmetric hollow fiber membrane for gas separation made of a soluble aromatic polyimide, wherein an orientation index is 1.3 or less, a separation coefficient α(p′o2/p′n2) as a permeation rate ratio of oxygen gas/nitrogen gas at 40° c. Is 5.3 or more, and a tensile fracture elongation is 15% or more..


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Hollow Fiber Membrane topics: Hollow Fiber Membrane, Membrane Module, Carbon Dioxide, Water Treatment, Wastewater Treatment, Wastewater, Ultrasonic, Irradiation, Hydrophobic Polymer, Polyurethane, Epoxy Resin, Downstream, Adsorption, Fossil Fuel, Reverse Osmosis

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