Disc shaped filter element

The invention relates to a disc shaped filter element for filtering a liquid such as a polymer. The filter element comprising—a hub, said hub defining a central opening therethrough,—an upper filter medium and a lower filter medium, said upper filter medium and said lower filter medium extending radially outwards from said hub. The upper filter medium and the lower filter medium comprise a layered structure comprising a first layer and a second layer. The first layer comprises a non-sintered metal fiber fleece and the second layer comprises a layer of non-sintered metal powder particles. The first layer and the second layer are sintered together.

Filter Medium for Separating Nitrogen Oxides

A filter medium is provided with a layer (A) provided with non-impregnated active carbon, a layer (B) with a solid carrier material that is impregnated with a permanganate salt, and a layer (C) with alkaline impregnated active carbon. The layer (B) and the layer (C) are arranged such that a gas flowing through the filter medium flows through the layer (B) before flowing through the layer (C). The layer (A) is arranged such that the gas flowing through the filter medium flows through the layer (A) before flowing through the layer (B) or the gas flowing through the filter medium flows through the layer (A) after flowing through the layer (C). 1. A filter medium comprising:a layer (A) comprising non-impregnated active carbon,a layer (B) comprising a solid carrier material that is impregnated with a permanganate salt;a layer (C) comprising alkaline impregnated active carbon;wherein the layer (B) and the layer (C) are arranged such that a gas flowing through the filter medium flows through the layer (B) before flowing through the layer (C);wherein the layer (A) is arranged such that the gas flowing through the filter medium flows through the layer (A) before flowing through the layer (B) or the gas flowing through the filter medium flows through the layer (A) after flowing through the layer (C).2. The filter medium according to claim 1 , wherein the layer (A) claim 1 , the layer (B) claim 1 , and the layer (C) each comprise a different composition.3. The filter medium according to claim 1 , wherein at least one of the layer (A) claim 1 , the layer (B) claim 1 , and the layer (C) comprises an agent for stabilization of the layer.4. The filter medium according to claim 3 , wherein claim 3 , when two or three of the layer (A) claim 3 , the layer (B) claim 3 , and the layer (C) comprise the agent for stabilization of the layer claim 3 , the same agent for stabilization of the layer is used in said two or three of the layer (A) claim 3 , the layer (B) claim 3 , and the layer ...

Air purifying coating system and method for making same

An air purifying coating system and method for making same having a carrier agent and a diatomic frustule titanium dioxide particle dispersion combined with the carrier agent. The coating system may include 70-99.9 weight percent carrier agent and 0.1-30 weight percent diatomic frustule titanium dioxide particle dispersion. The carrier agent of the coating system may include a cleaning agent or a polishing agent. The diatomic frustule titanium dioxide particle dispersion may include 1-35 micron particle size diatomic frustule titanium dioxide particles combined with water and dispersion additive. The dispersion may further include an anti-settling additive, a rheology additive, and/or a defoamer.

High-purity composite materials, methods of making high-purity composite materials, and methods of using high-purity composite materials

A composite filter aid may include acid-washed diatomaceous earth and a low extractable metal mineral. A method for making a composite material may include blending an acid-washed diatomaceous earth and a low extractable metal mineral, adding a binder to the blended diatomaceous earth and low extractable metal mineral, and forming the composite material from the acid-washed diatomaceous earth, the low extractable metal mineral, and the binder. A method for filtering a liquid may include providing a liquid for filtering and filtering the liquid through a composite filter aid that includes an acid-washed diatomaceous earth and a low extractable metal mineral.

Road surface covering system

A road surface covering system includes a road surface covering of concrete or asphalt, water permeable tiles disposed adjacent to an outer edge of the road surface covering and having a water conductivity of at least 7 inches of water per hour, and a subgrade bed of fill material including a porous sand. The porous sand includes at least 70% of a naturally occurring micaceous arkose rock material having at least 30 wt % of mica, and at least 50 vol % of the micaceous arkose rock material having a mean diameter of between 0.060 mm and 0.65 mm. The micaceous arkose rock material being previously kilned at a temperature of between 1100° C. and 1300° C. 1. A road surface covering system , comprising:a road surface covering comprising at least one of concrete or asphalt, the road surface covering being define by a first outer edge;a plurality of water permeable tiles disposed adjacent to the first outer edge of the road surface covering, the water permeable tiles having a water conductivity, based on a constant water column of 30 inches, of at least 7 inches of water per hour; anda subgrade bed of fill material disposed beneath the plurality of water permeable tiles and at least a portion of the road surface covering, the subgrade bed of fill material comprising a porous sand, the porous sand comprising at least 70% by weight of a naturally occurring micaceous arkose rock material, the micaceous arkose rock material comprising at least 30% by weight of mica, at least about 50% by volume of the micaceous arkose rock material having a mean diameter of between about 0.060 mm and about 0.65 mm, and the micaceous arkose rock material having been previously kilned at of temperature of between 1100° C. and 1300° C. to transform at least 30% by weight of micaceous components in the micaceous arkose rock material into feldspar containing metal sulfides.2. The road surface covering system of and wherein the plurality of water permeable tiles are each defined by an upper surface ...

AIR FILTER MEDIUM, FILTER PACK, AIR FILTER UNIT, AND METHOD FOR PRODUCING THE SAME

An air filter medium having a large thickness and a low filling factor, a filter pack, an air filter unit, and methods for producing the air filter medium, the filter pack, and the air filter unit are provided. The air filter medium includes a fluororesin porous film having a portion with a filling factor of 3.5% or less, and the portion with a filling factor of 3.5% or less has a thickness of 45 μm or more. 1. An air filter medium comprising:a fluororesin porous film having a portion with a filling factor of 3.5% or less,wherein the portion with a filling factor of 3.5% or less has a thickness of 45 μm or more.2. The air filter medium according to claim 1 ,wherein the fluororesin porous film has a portion with a filling factor of 2.5% or less, andthe portion with a filling factor of 2.5% or less has a thickness of 50 μm or more.3. The air filter medium according to claim 1 ,wherein a PF value calculated from formula PF={−log((100−collection efficiency (%))/100)}/(pressure loss (Pa)/1000) using pressure loss and collection efficiency determined from polyalphaolefin particles having a particle size of 0.3 μm is 17 or more.4. The air filter medium according to claim 1 ,{'sup': '2', 'wherein a dust-holding capacity of polyalphaolefin particles having a number median diameter of 0.25 μm at which pressure loss increases by 250 Pa when air containing the polyalphaolefin particles is continuously passed through the air filter medium at a flow velocity of 5.3 cm/s is 30.0 g/mor more.'}5. The air filter medium according to claim 1 , having a pressure loss of 200 Pa or less when air is passed through the air filter medium at a flow velocity of 5.3 cm/s.6. The air filter medium according to claim 1 ,wherein the fluororesin porous film has a mean flow pore size of 2.5 μm or more.7. The air filter medium according to claim 1 , a first fluororesin porous film having a filling factor of 3.5% or less and a thickness of 45 μm or more, and', 'a second fluororesin porous film disposed ...

Multilayer filter material

The challenge of the present invention is to provide a multilayer filter medium whose deodorizing performance after a long-term storage of the filter medium is suppressed from deteriorating and which is superior in deodorizing performance and exhibits low pressure drop. A multilayer filter medium includes three or more nonwoven fabric layers superposed together and has two or more interlayer regions each formed by two adjacent layers of the nonwoven fabric layers, in which a first interlayer region of the interlayer regions contains functional particles A having an average particle diameter of 50 to 100 μm, and a second interlayer region selected from the interlayer regions excluding the first interlayer region contains functional particles B having an average particle diameter of 150 to 500 μm.

Cyclonic vehicular traffic pollution control system

A filter may remove PM2.5 and/or other airborne pollutants, which filter has fibers of an average diameter of no more than 500 nm, the fibers of at least 90 wt. % polyacrylonitrile, relative to all fibers in the filter; and a catalyst of at least 90 wt. % TiO2, relative to all catalytic metals in the filter, dispersed onto the fibers. The fibers need not be charged. The TiO2 may be condensed or precipitated onto the fibers out of a liquid containing the TiO2 and the fibers by simple methods. The catalyst may be activated by UV irradiation to decompose particulate matter having an average particle size of 2.5 μm or less, i.e., PM2.5, and/or other airborne pollutants from air. Such filters may be implemented around areas of vehicle traffic, e.g., as elements of traffic lights, and may be used to controllably purify polluted air.

Filter material for air filter

An object of the present invention is to provide an air filter medium which includes heat-expandable particles that, even when contained in a small amount, impart excellent flame retardancy to the air filter medium and which has excellent flame retardancy and a low pressure loss. The present invention provides an air filter medium including: a plurality of stacked fibrous sheets; and heat-expandable particles and a binder disposed in at least one of interlaminar spaces between adjacent layers of the fibrous sheets.

Nanomaterial including nanofibers and beads for hepa air filter media

Nanomaterials ( 100 ) in particular HEPA air filter media. One embodiment is a nanomaterial ( 100 ) that includes a plurality of nanofibers ( 140 ) that form a randomly interwoven network defining three-dimensional pores ( 160 ) therein. The nanomaterial further includes a plurality of beads ( 120 ) with a bead diameter of 2-20 μm that are distributed randomly within the plurality of nanofibers ( 140 ). The beads ( 120 ) support the nanofibers ( 140 ) to prevent the pores ( 160 ) from collapsing.

HIGH-PURITY COMPOSITE MATERIALS, METHODS OF MAKING HIGH-PURITY COMPOSITE MATERIALS, AND METHODS OF USING HIGH-PURITY COMPOSITE MATERIALS

A composite filter aid may include acid-washed diatomaceous earth and a low extractable metal mineral. A method for making a composite material may include blending an acid-washed diatomaceous earth and a low extractable metal mineral, adding a binder to the blended diatomaceous earth and low extractable metal mineral, and forming the composite material from the acid-washed diatomaceous earth, the low extractable metal mineral, and the binder. A method for filtering a liquid may include providing a liquid for filtering and filtering the liquid through a composite filter aid that includes an acid-washed diatomaceous earth and a low extractable metal mineral. 136-. (canceled)37. A method for making a composite material , the method comprising:washing a diatomaceous earth with at least one acid, followed by rinsing the acid washed diatomaceous earth with water;blending the acid-washed diatomaceous earth and a low extractable metal mineral comprising perlite;adding a binder to the blended acid washed diatomaceous earth and low extractable metal mineral; andforming the composite material from the acid-washed diatomaceous earth, the low extractable metal mineral, and the binder.38. The method of claim 37 , further comprising dispersing the binder in water.39. The method of claim 37 , further comprising dispersing the binder in water before adding the binder to the blended acid-washed diatomaceous earth and low extractable metal mineral.40. The method of claim 37 , further comprising mixing the binder and the blended acid-washed diatomaceous earth and low extractable metal mineral.41. The method of claim 40 , further comprising classifying the mixed binder and blended acid-washed diatomaceous earth and low extractable metal mineral.42. The method of claim 40 , further comprising drying the mixed binder and blended acid-washed diatomaceous earth and low extractable metal mineral.43. The method of claim 42 , wherein the drying comprises heating the mixed binder and blended ...

Multilayer Copper-based Zeolite Fiber Medical Material, Protective Equipment and Manufacturing Method

The present disclosure is to provide a medical material, medical protective equipment with both low cytotoxicity and high-efficiency antibacterial, antiviral properties and its manufacturing method. The multi-layer copper-based zeolite fiber medical material of the present disclosure includes a four-layer structure, including the outermost layer, the first intermediate layer, the second intermediate layer, and the innermost layer in sequence; the outermost layer and the second intermediate layer are copper-based zeolite fiber layer, the first intermediate layer is a hydrophobic fiber layer, and the innermost layer is a hydrophilic fiber layer; the pore size of the copper-based zeolite fiber layer of the outermost layer is greater than the pore size of the hydrophobic fiber layer of the first intermediate layer; the copper-based zeolite fiber layer contains copper-based zeolite and fiber threads, the fiber threads are formed by twisting fibers; the copper-based zeolite is independently dispersed on the fiber surface. 1. A multilayer copper-based zeolite fiber medical material , comprising an outermost layer ,a first intermediate layer,a second intermediate layer, andan innermost layer in sequence;wherein the outermost layer and the second intermediate layer are copper-based zeolite fiber layers; the first intermediate layer is a hydrophobic fiber layer, and the innermost layer is a hydrophilic fiber layer; a pore size of the copper-based zeolite fiber layer of the outermost layer is greater than that of the hydrophobic fiber layer of the first intermediate layer; the copper-based zeolite fiber layer contains copper-based zeolite and fiber threads; the fiber threads are formed by twisting fibers; the copper-based zeolite is independently dispersed on the fiber surface, and a mass of the copper-based zeolite decreases in a gradient from outside to inside along a radial interface of the fiber thread.2. The multilayer copper-based zeolite fiber medical material of claim ...

IMMOBILIZED MEDIA DEVICE WITH A THERMOPLASTIC POLYMER BINDER SYSTEM

The present disclosure is directed to an immobilized media device and methods for making an immobilized media device. The present disclosure is also directed to methods for the separation of components of a media comprising filtering the media through an immobilized media device. 1. An immobilized media device , comprising:a. at least one adsorbent;b. from about 0.5 to about 15 weight percent a small particle size binder; andc. from about 8 to about 50 weight percent a large particle size binder based on total weight of the device.2. The device according to claim 1 , wherein the device is formed into a monolith claim 1 , an annulus or a solid article.3. The device according to claim 1 , wherein said small particle size binder and large particle size binder are immiscible.4. The device according to claim 1 , wherein the small particle size binder and large particle size binder are miscible or are the same type of polymer.5. The device according to claim 1 , where said small particle size binder and large particle size binder comprise different monomer repeat units.6. The device according to claim 1 , wherein the adsorbent comprises activated carbon or molecular sieves.7. The device according to claim 1 , wherein the small particle size binder comprises a thermoplastic polymer.8. The device according to claim 1 , wherein the large particle size binder comprises a thermoplastic polymer.9. The device according to claim 7 , wherein the thermoplastic polymer of either the small particle size binder or the large particle size binder or both is selected from the group consisting of a fluoropolymer claim 7 , polyethylene claim 7 , polypropylene claim 7 , ethyl-vinyl acetate claim 7 , polyamide claim 7 , polyvinylidene fluoride claim 7 , polyether ether ketone claim 7 , polyalkyl (meth)acrylate and polyetherketoneketone.10. The device according to claim 8 , wherein the thermoplastic polymer comprises a polyolefin.11. The device according to claim 10 , wherein the polyolefin ...

POROUS ARTICLE HAVING POLYMER BINDER SUB-MICRON PARTICLE

The invention relates to a solid porous article containing sub-micron functional additive particles held together using discrete sub-micron polymer binder particles. The porous article preferably also contains a majority of primary active particles in the 1 to 300 micron range. The solid porous articles are used to separate, precipitate, and/or trap components of a fluid that passes through the porous article. The solid porous articles are used to separate and trap components of a fluid that passes through the porous article. Preferred binders are polyvinylidene fluoride resins, such as Kyblock® resins from Arkema Inc. 1. A solid porous article comprising:a) a thermoplastic polymeric binder in the form of particles having an average particle discrete size of from 20 nm to 1 micron, andb) at least 50 weight percent of primary active particles, andc) greater than 0.5 weight percent of secondary functional additive particles having an average particle size of from 5 nm to 10,000 nm.2. The solid porous article of claim 1 , wherein said solid porous article comprises comprise greater than 1.0 weight percent claim 1 , based on the total weight of the solid porous article claim 1 , of secondary functional additive particles having an average particle size of from 10 to 5 claim 1 ,000 nm.3. The solid porous article of claim 2 , wherein said solid porous article comprises comprise greater than 10 weight percent claim 2 , based on the total weight of the solid porous article claim 2 , of secondary functional additive particles having an average particle size of from 25 to 1 claim 2 ,000 nm.4. The solid porous article of claim 1 , wherein said thermoplastic binder is present at from 1 to 30 weight percent claim 1 , based on the total weight of the solid porous article.5. The solid porous article of claim 4 , wherein said thermoplastic binder is present at from 5-14 wt percent claim 4 , based on the total weight of the solid porous article.6. The solid porous article of claim 1 ...

BONDED MICROSPHERE FILTER

A filter material of microspheres bonded in a close-packed arrangement is provided. A filter device comprising a funnel containing a filter material of microspheres bonded in a close-packed arrangement is provided. The filter material and filter device are suitable for plasma separation from whole blood. 1. A filter material comprising microspheres in a close packed arrangement bonded together so as to maintain interstitial holes open to fluid flow.2. The filter material of claim 1 , wherein the microspheres have an average diameter of between about 1 nm and about 1000 μm.3. The filter material of claim 2 , wherein the microspheres have an average diameter of between about 1 μm and about 100 μm.4. The filter material of claim 3 , wherein the microspheres have an average diameter of between about 3 μm and about 20 μm.5. The filter material of claim 2 , wherein at least a portion of the microspheres are bonded together using chemical cross-linking.6. The filter material of claim 2 , wherein at least a portion of the microspheres are laminated together.7. The filter material of claim 2 , wherein at least a portion of the microspheres are bonded together using a magnetic force.8. The filter material of claim 5 , wherein the microspheres are cross-linked by covalent bonding.9. The filter material of claim 5 , wherein the filter material is prepared by a process comprising coating microspheres with one or more compounds comprising an epoxy or amine group and then reacting the coated microspheres with a compound comprising an azido and/or alkynyl group.10. The filter material of claim 9 , wherein the one or more compounds comprising an epoxy or amine group is PGMA and/or PEI.11. The filter material of claim 9 , wherein the compound comprising an azido and/or alkyl group is selected from: 5-azidopentanoic acid claim 9 , 4-ethynyl aniline claim 9 , 4-pentyn-1-amine claim 9 , 4-azidoaniline.hcl claim 9 , 3-azido-1-propanamine claim 9 , glycidyl propargyl ether or ...

Filter media with improved conductivity

Filter media are provided having improved conductivity to enhance filtration efficiency and/or dissipate static charge, and methods for making the same. In one exemplary embodiment, the filter media can include a filtration substrate, and at least one conductive coating disposed on at least a portion of the filtration substrate. In use, the conductive coating is coupled to an energy source and it is effective to emit ions when energy is delivered thereto to increase the efficiency of the filtration substrate and/or to dissipate or eliminate static charge generated during filtration.

COMPOSITE STRUCTURE, METHOD OF MANUFACTURING THE SAME, AND FILTER MEDIUM CONTAINING THE COMPOSITE STRUCTURE

Provided are: a filter medium with high dust collection efficiency, low pressure loss, and a long lifespan; and a filter material used for the filter medium. This composite structure includes ultrafine fibers having a fiber diameter of less than 500 nm, and beads. The outermost surface of the composite structure has at least 500/mmof beads with a diameter of 5 μm or more. The ultrafine fibers and the beads preferably have the same component. 1. A composite structure containing ultrafine fibers having a fiber diameter of less than 500 nm and beads , wherein the beads of at least 500/mmhaving a diameter of 5 μm or more are contained on an outermost surface of the composite structure ,wherein the ultrafine fibers and the beads have the same component.2. (canceled)3. The composite structure according to claim 1 , wherein 50% or more of ultrafine fibers having a fiber diameter of 200 nm or less is contained with respect to the total fibers.4. The composite structure according to claim 1 , wherein 5% or more of ultrafine fibers having a fiber diameter of 500 nm or less is further contained with respect to the total fibers.5. A filter medium including the composite structure according to .6. A method of manufacturing the composite structure according to claim 1 , the method comprising:preparing a spinning solution in which at least one resin selected from a group consisting of polyvinylidene fluoride, polyamide, polyurethane, and polylactic acid is dissolved in a solvent; andspinning the spinning solution in an electrostatic spinning method and obtaining a composite structure containing ultrafine fibers having a fiber diameter of less than 500 nm and beads.7. The composite structure according to claim 3 , wherein 5% or more of ultrafine fibers having a fiber diameter of 500 nm or less is further contained with respect to the total fibers.8. A filter medium including the composite structure according to .9. A filter medium including the composite structure according to .10. ...

Filter medium, method of manufacturing the same and uses thereof

A filter medium comprising a first conductive fibrous substrate, a second conductive fibrous substrate spaced apart from the first conductive substrate and a third insulation substrate fitted between the first and the second substrates for electrically separating the first conductive substrate from the second conductive substrate. The first conductive fibrous substrate comprises a first layer with first fibers having a first average diameter; a second layer with second fibers having a second average diameter; and a third layer with third fibers having a third average diameter. The second layer comprises activated carbon in an amount sufficient to render the first fibrous substrate conductive. The present medium can be used in electrified filters for cabin air filtration for passenger cars and other vehicles. It can also be used for HVAC filtration for indoor air, and in portable air purification units and even in vacuum cleaners.

Two-stage filter for removing microorganisms from water

A filter system is provided that comprises a first filter element in fluid communication with a source of a fluid, wherein the fluid flows through the first filter element and a second filter element in fluid communication with the first filter element, wherein the fluid, flowing through the first filter element flows through the second filter element and is discharged. The first filter element comprises a material adapted to stop the passage of materials greater than a selected size. The second filter element is adapted to remove an organic substance from the liquid.

Water purifier

Disclosed is a water purifier including a first storage cistern in which an inlet for flowing in water is formed, a second storage cistern for storing the purified water and having a nozzle at the outside thereof, and a filter constituted by a ceramic filter, a cartridge filter, and a mineral filter and installed to the inside of the first storage cistern and the second storage cistern to filter the water flown in the first storage cistern and make the purified water flow in the second storage cistern, the water purifier comprises a ceramic filter formed as a mixture by mixing the conventional used silicon dioxide with its particle size of 1˜100 micrometer with additionally one or two or more selected among silicon dioxide, tungsten, alumina (Al 2 O 3 ), silver, zinc (Zn), white gold (PT), gold (Au), and titanium dioxide (TiO 2 ) with nano particle size.

DIFFUSIOPHORETIC WATER FILTRATION DEVICE WITH CLOSED CHANNEL STRUCTURE

A diffusiophoretic water filtration device has a pressurizable gas chamber for receiving a pressurized gas; an inlet manifold for receiving a colloidal suspension including colloidal particles in water; a flow chamber having an inlet and an outlet, the flow chamber for receiving the colloidal suspension at the inlet from the inlet manifold, the colloidal suspension flowing between the inlet and at least one outlet in a flow direction; and a gas membrane separating the gas chamber and the flow chamber, the sheet being made of a gas permeable membrane, the pressurized gas capable of permeating the membrane, the membrane being water impermeable, the gas membrane having a first side facing the pressurized gas chamber, and a second side facing the flow chamber, the flow chamber having a plurality of channels, each channel contacting the second side of the membrane; and an outlet splitter separating a first outlet from a second outlet and splitting the plurality of channels, the first outlet for receiving water having a higher concentration of some of the colloidal particles than the second outlet. 1. A diffusiophoretic water filtration device comprising:a pressurizable gas chamber for receiving a pressurized gas;an inlet manifold for receiving a colloidal suspension including colloidal particles in water;a flow chamber having an inlet and an outlet, the flow chamber for receiving the colloidal suspension at the inlet from the inlet manifold, the colloidal suspension flowing between the inlet and at least one outlet in a flow direction;a gas membrane separating the gas chamber and the flow chamber, the sheet being made of a gas permeable membrane, the pressurized gas capable of permeating the membrane, the membrane being water impermeable, the gas membrane having a first side facing the pressurized gas chamber, and a second side facing the flow chamber, the flow chamber having a plurality of channels, each channel contacting the second side of the membrane; andan outlet ...

DIFFUSIOPHORETIC WATER FILTRATION DEVICE WITH OPENABLE CLOSED CHANNEL STRUCTURE

A diffusiophoretic water filtration device includes a diffusiophoretic flow chamber having an inlet and an outlet, the flow chamber for receiving the colloidal suspension at the inlet from the inlet manifold, and passing the colloidal suspension between the inlet and at least one outlet in a flow direction; the flow chamber having a removable and reassemblable cover defining a boundary of the diffusiophoretic flow chamber. 1. A diffusiophoretic water filtration device comprising:an inlet manifold for receiving a colloidal suspension including colloidal particles in water;a flow chamber having an inlet and an outlet, the flow chamber for receiving the colloidal suspension at the inlet from the inlet manifold and passing the colloidal suspension between the inlet and the outlet in a flow direction;the flow chamber defined on a first side by a membrane imparting a diffusiophoretic gradient on the flow chamber and on a second side by a cover; andan outlet splitter splitting the flow chamber outlet into a first splitter outlet and a second splitter outlet, the first splitter outlet for receiving water having a higher concentration of some of the colloidal particles than the second splitter outlet,the cover being a removable and reassemblable cover removable from the membrane to allow the flow chamber to be accessed.2. The diffusiophoretic water filtration device as recited in wherein the membrane is a PDMS sheet.31. The diffusiophoretic water filtration device as recited in wherein the inlet manifold defines a water pressure regulator.4. The diffusiophoretic water filter as recited in wherein the cover is made in one piece of PDMS together with a channel structure of longitudinally extending microchannels defining the plurality of channels claim 1 , each microchannel having a thickness equal to or less than 1 mm.5. The diffusiophoretic water filtration device as recited in the flow chamber includes a channel structure sandwiched by the membrane and the cover.6. The ...

Portable diffusiophoretic water filtration device and related methods

A water filtration device includes a diffusiophoretic water filter having an inlet and an outlet and for receiving a colloidal suspension at the inlet and flowing the colloidal suspension between the inlet and the outlet in a flow direction; a diffusiophoretic-inducing membrane; a cover, the membrane and the cover defining a plurality of channels extending between the inlet and the outlet; an outlet splitter for the plurality of channels being fixed with respect to the membrane or the cover, the cover and membrane being flexible and configured to permit rolling up of the membrane and the cover. A related method is also provided.

High permeability composite magnesium silicate filter aids

A composite filter aid may include a silicate substrate and a precipitated magnesium silicate having a mole ratio of SiO 2 :MgO greater than about 1.0:1. A method for making a composite filter aid may include providing a silicate substrate, precipitating a magnesium silicate onto the silicate substrate to form a composite filter aid, wherein the mole ratio of SiO 2 :MgO of the magnesium silicate is greater than about 1.0:1. A method for filtering a non-aqueous liquid may include providing a non-aqueous liquid for filtering and filtering the non-aqueous liquid through a composite filter aid.

DIFFUSIOPHORETIC WATER FILTRATION DEVICE, MEMBRANE, OUTPUT SPLITTER AND INLET MANIFOLD AND RELATED METHODS

A water filtration device comprising: a diffusiophoretic water filter having at least one channel having an inlet and an outlet and for receiving a colloidal suspension at the inlet and flowing the colloidal suspension between the inlet and the outlet in a flow direction, the channel being in contact with a diffusiophoretic-inducing membrane. Other devices and methods are also disclosed. 1. A water filtration device comprising:a diffusiophoretic water filter having at least one channel having an inlet and an outlet and for receiving a colloidal suspension at the inlet and flowing the colloidal suspension between the inlet and the outlet in a flow direction, the channel being in contact with a diffusiophoretic-inducing membrane; andat least one weight for placement over the membrane, the weight being gas permeable.2. The water filtration device as recited in further comprising: a pressurizable gas chamber for providing pressurized gas to the at least one channel via the membrane claim 1 , the membrane being a gas permeable and water impermeable membrane.3. The water filtration device as recited in further comprising an inlet manifold for receiving the colloidal suspension including colloidal particles in water claim 1 , the inlet manifold including a water pressure regulator claim 1 , the water pressure regulator having a height regulator.4. The water filtration device as recited in further comprising an outlet splitter for connecting to the outlet claim 1 , the outlet splitter having a first splitter outlet and a second splitter outlet claim 1 , the first splitter outlet for receiving water having a higher concentration of some of the colloidal particles than a second splitter outlet.5. The water filtration device as recited in wherein the outlet splitter is removable.6. The water filtration device as recited in wherein the outlet splitter has a movable splitter device for altering size of the first splitter outlet.7. The water filtration device as recited in ...

Filter, filter assembly, filter device and water purification system

A filter for producing a water composition containing silicic acid and hydrogen gas includes a carrier material and a silicon material supported on the carrier material. The filter has a diameter ranging from 50 μm to 10 mm. A filter assembly, a filter device, and a water purification system containing the filter are also provided.

Non-Respirable Powdered Diatomaceous Earth Products

Disclosed is a non-respirable/substantially non-respirable product and method of manufacturing such product. The product may comprise diatomite having a median particle size distribution between about 10 microns and about 60 microns. The product is substantially non-respirable and may be enclosed inside a package wherein the product and inside the package have a combined aerobic bacterial count between about zero and about 114 (CFU/1.0 g). The product may have a dust number less than about 0.2. 1. A method for manufacturing a low dust diatomaceous earth filter medium , the method comprising:calcining diatomite to provide calcined diatomite particles having median particle size of 30 to 60 microns;classifying the calcined diatomite powder to provide the diatomite filter medium;fluidizing the diatomite filter medium and spraying water onto the diatomite filter medium during fluidization of the diatomite filter medium to provide a pretreated diatomite filter medium; andpackaging the pretreated diatomite filter medium in a water-impermeable package.2. The method of further comprising spraying an antimicrobial agent onto the diatomite filter medium during fluidization of the diatomite filter medium claim 1 , the antimicrobial agent selected from the group consisting of chlorine dioxide claim 1 , sodium hypochlorite claim 1 , calcium hypochlorite claim 1 , sodium dichloroisocyanurate claim 1 , and mixtures thereof.3. A method for manufacturing low dust claim 1 , pretreated diatomite filter medium claim 1 , the method comprising:calcining natural diatomite powder in the presence of a flux to provide flux calcined diatomite powder having particles of a median particle size in the range of about 20 microns to about 60 microns;classifying the flux calcined diatomite powder to provide diatomite filter medium;fluidizing the diatomite filter medium and spraying a de-dusting agent onto the diatomite filter medium during fluidization of the diatomite filter medium to provide the ...

NON-SHEDDING HYBRID NONWOVENS AND METHOD OF PRODUCING SAME

A non-shedding hybrid nonwoven web comprised of 99% by mass of functional material(s) co-mingled with the filaments. High level of particle retention within the fabric is provided without the aid of adhesives, binders, adhesive polymers, or post processes. This composite web has a multi-layered structure with a uniform distribution of sorptive particles and desired opposed color contrast on each side. The process includes providing two converging streams of blown polymeric filaments, passive feed of functional material(s) in between the filament streams, and collecting the hybrid webs. 1. A high basis weight , especially high particle load , non-shedding hybrid nonwoven fabric comprising:a first fiber component;at least a second fiber component;high mass concentration of sorptive particles;wherein said fiber components are present in amount of about 10 to 100 grams;said particles are enwrapped by said fibers and do not migrate in and out of said nonwoven fabric;said particles are ensnared within the said hybrid nonwoven preferably without the aid of adhesive or adhesive polymer and their surface is fully accessible;said particles are co-mingled with said fiber(s) to form a multi-layered structure;said hybrid nonwoven has a generally uniform concentration of said particles through its z-direction.2. The nonwoven web of wherein said functional claim 1 , e.c. sorptive particles claim 1 , preferably fine particles claim 1 , are impregnated activated carbons.3. The nonwoven web of wherein said functional claim 1 , e.c. sorptive particles claim 1 , preferably fine particles claim 1 , are activated carbons.4. The nonwoven web of wherein said functional claim 1 , e.c. sorptive particles can be of any shape or form.5. The hybrid nonwoven fabric of wherein said particle size can be from 0.1 to 4000 μm.6. The hybrid nonwoven fabric of wherein said fibers have similar or different average fiber diameters ranging from 0.1 μm to 100.7. (canceled)8. A self-supporting hybrid ...

POROUS DEVICES MADE BY LASER ADDITIVE MANUFACTURING

The present invention utilizes laser additive manufacturing technologies (“LAMT”) for the creation of porous media that can be used in filtration devices, flow control devices, drug delivery devices and similar devices that are used for, or in conjunction with, the controlled flow of fluids (e.g., gases and liquids) therethrough. 1. A method of manufacturing an article that is at least partially porous , comprising the steps of:placing a first layer of particles on a build plate;subjecting the particles in at least a first portion of said first layer to a laser beam such that at least a portion of the particles in said first layer bind to each other without fully melting;placing a second layer of particles over said first layer;subjecting the particles in at least a first portion of said second layer to a laser beam such that at least a portion of the particles in said second layer bind to each other and to at least a portion of said first layer without fully melting; andplacing subsequent layers of particles over said second layer as necessary to form the article, and subjecting at least a portion of each subsequent layer to a laser beam such that at least a portion of the particles in each of said subsequent layers bind to each other without fully melting;wherein the article is characterized by a thickness that exhibits a substantially homogeneous, interconnected porosity.2. The method of claim 1 , wherein the build plate is non-porous and said step of subjecting the particles in at least a portion of said first layer to a laser beam results in binding at least a portion of said first layer to the build plate; and wherein said build plate is an integral portion of the article.3. The method of claim 1 , wherein said particles in said first claim 1 , second and subsequent layers comprise nickel claim 1 , cobalt claim 1 , iron claim 1 , copper claim 1 , aluminum claim 1 , palladium claim 1 , titanium claim 1 , tungsten claim 1 , platinum claim 1 , silver claim 1 , ...

LIGHTWEIGHT MODIFIED FILTER MATERIAL, PREPARATION METHOD THEREFOR AND USE THEREOF

A lightweight modified filter material, a preparation method therefor and use thereof, the lightweight modified filter material being prepared from the following components in parts by mass: 75-100 parts of waste glass, 5-20 parts of a metal oxide modifier and 1-10 parts of a foamer. The lightweight modified filter material has the advantages of being lightweight, having large specific surface area, a high isoelectric point, porosity and the like, increasing the isoelectric point and service life of the filter material. The added metal oxide can be combined with SiO2 in the glass to form Si—O-Me (Me metal ions) and enter the glass network. 1. A lightweight modified filter material , wherein the lightweight modified filter material is prepared from components in parts by mass as follows:75-100 parts of waste glass, 5-20 parts of a metal oxide modifier and 1-10 parts of a foaming agent;the lightweight modified filter material has a specific weight of 1.2-1.8 kg/L; andthe lightweight modified filter material has a void ratio of 60%-78%.2. The lightweight modified filter material according to claim 1 , wherein the lightweight modified filter material is mainly prepared from components in parts by mass as follows:80-95 parts of the waste glass, 5-15 parts of the metal oxide modifier and 1-5 parts of the foaming agent.3. The lightweight modified filter material according to claim 1 , wherein the metal oxide modifier is at least one selected from the group consisting of titanium oxide claim 1 , ferric oxide claim 1 , aluminum oxide and magnesium oxide.4. The lightweight modified filter material according to claim 1 , wherein the foaming agent is at least one selected from the group consisting of carbon black claim 1 , silicon carbide claim 1 , calcium carbonate claim 1 , dolomite powders claim 1 , phlogopite claim 1 , graphite and manganese dioxide.5. The lightweight modified filter material according to claim 1 , wherein the lightweight modified filter material has a ...

Preservative Removal from Eye Drops

A BAK removal device is constructed as a plug of microparticles of a hydrophilic polymeric gel that displays a hydraulic permeability greater than 0.01 Da. The polymer hydrophilic polymeric gel comprises poly(2-hydroxyethyl methacrylate) (pHEMA). The particles are 2 to 100 μm and the plug has a surface area of 30 mm 2 to 2 mm 2 and a length of 2 mm to 25 mm and wherein the microparticles of a hydrophilic polymeric gel has a pore radius of 3 to 60 μm.

BN or Y2O3 Coated Ceramic Filters Used in Filtration of Aluminum-Lithium Alloys and Reactive Alloys

A filter which is particularly suitable for filtration of molten metal, and method of making the filter, is described. The filter comprises a ceramic core comprising a primary component selected from the group consisting of alumina and magnesium oxide. A coating is on the ceramic core wherein the coating is selected from the group consisting of BN and Y 2 O 3 .

Method for separating pha and pha prepared therefrom

Provided a method for separating PHA and PHA prepared therefrom. The method comprises the following steps: subjecting a PHA fermentation broth to solid-liquid separation to obtain a thallus precipitate; breaking cell walls of the thallus precipitate, and subjecting obtained wall-broken products to a plate and frame filtration to obtain PHA; a filter cloth for the plate and frame filtration is pre-coated with a PHA layer. The method adopts a plate and frame separation to replace the traditional centrifugal separation to prepare PHA, and the PHA layer is pre-coated on the filter cloth for the plate and frame filtration, thereby overcome the defects in the prior art such as high cost and operational difficulty caused by adopting multiple centrifugal separations; in addition, the method of the present disclosure also exhibits the advantages of high recovery rate of PHA and high purity of the prepared PHA product.

FILTRATION SYSTEM AND METHODS OF USING SUCH SYSTEM FOR IMPROVED WATER FILTRATION

A water filtration system is provided that comprises a combination of two components: silver nanoparticles immobilized on a porous carbon solid matrix and calcium carbonate silver nanoparticles. The silver nanoparticles immobilized on the porous carbon solid matrix are prepared in a one-step wet ball milling process that does not use an environmentally hazardous reducing agent or an organic stabilizer. The calcium carbonate in the calcium carbonate silver nanoparticles is preferably isolated from egg shells. The two filter components can be present in any ratio but an approximate 50:50 ratio is preferred. Also provided is an in situ method of preparing silver nanoparticles on active charcoal. Powdered activated charcoal and silver nitrate are mixed together in a mixture of ethanol and water to form a charcoal-silver nitrate solution which is then subjected to ball milling in the presence of polypropylene to produce silver nanoparticles on active charcoal. 1. A water filtration system comprising a combination of two components:a) silver nanoparticles immobilized on a porous carbon solid matrix; andb) calcium carbonate silver nanoparticles.2. The filtration system of wherein the silver nanoparticles immobilized on the porous carbon solid matrix are prepared in a one-step wet ball milling process wherein the wet ball milling process does not use an environmentally hazardous reducing agent or an organic stabilizer.3. The filtration system of wherein the calcium carbonate in the calcium carbonate silver nanoparticles is isolated from egg shells.4. The filtration system of wherein a) and b) are present in a 50:50 ratio.5. The water filtration system of claim 1 , wherein the porous carbon solid matrix comprises carbon nanoparticles.6. The water filtration system of claim 1 , wherein the silver nanoparticles are between the size of 10-35 nanometers.7. The water filtration system of claim 1 , wherein the calcium carbonate silver nanoparticles are between the size of 5-20 nm. ...

Methods for fabricating porous media with controllable characteristics

A method for fabrication of ordinary porous media and fractured porous media with controllable characteristics is disclosed. The method comprises the steps of: providing a cylindrical container and sealing one end of the cylindrical container. The method further comprises fastening the sealed end of the cylindrical container with a lacy sheet for connecting to a vacuum pump and packing the cylindrical container with glass beads to achieve predetermined porosity and permeability using vacuum. Finally placing the packed container in a furnace until reaching a retention time at a predefined rate of temperature enhancement, and separating a fabricated core from the packed container.

Adsorption filter

The present invention relates to an adsorption filter including activated carbon and a fibrillated fibrous binder, in which the activated carbon has a 0% particle diameter (D0) of 10 μm or more in a volume-based cumulative particle-size distribution and has a 50% particle diameter (D50) of 90 to 200 μm in the volume-based cumulative particle-size distribution; the fibrillated fibrous binder has a CSF value of 10 to 150 mL; and the adsorption filter includes 4 to 8 parts by mass of the fibrillated fibrous binder relative to 100 parts by mass of the activated carbon.

ALUMINA POROUS BODY AND METHOD FOR MANUFACTURING SAME

An alumina porous body made up by binding aggregate alumina particles to each other, the aggregate alumina particles being bound to each other by a compound comprising yttrium silicate synthesized from mullite and YO; and a two-layer structure ceramic porous body with an inorganic porous film formed on the alumina porous body.

DIFFUSIOPHORETIC WATER FILTRATION DEVICE, MEMBRANE, OUTPUT SPLITTER AND INLET MANIFOLD AND RELATED METHODS TOOL

A water filtration device comprising: a diffusiophoretic water filter having at least one channel having an inlet and an outlet and for receiving a colloidal suspension at the inlet and flowing the colloidal suspension between the inlet and the outlet in a flow direction, the channel being in contact with a diffusiophoretic-inducing membrane. Other devices and methods are also disclosed. 130to . (canceled)31. A water filtration device comprising:a diffusiophoretic water filter having at least one channel having an inlet and an outlet and for receiving a colloidal suspension at the inlet and flowing the colloidal suspension between the inlet and the outlet in a flow direction, the channel being in contact with a diffusiophoretic-inducing membrane, wherein the membrane is a PDMS sheet consisting essentially of PDMS and having a Shore A of between 40 and 60, a tensile elongation of at least 1000 psi, and a tear B being at least 150 ppi.32. The water filtration device as recited in further comprising: a pressurizable gas chamber for providing pressurized gas to the at least one channel via the membrane claim 31 , the membrane being a gas permeable and water impermeable membrane.33. The water filtration device as recited in further comprising an inlet manifold for receiving the colloidal suspension including colloidal particles in water claim 31 , the inlet manifold including a water pressure regulator claim 31 , the water pressure regulator having a height regulator.34. The water filtration device as recited in further comprising an outlet splitter for connecting to the outlet claim 31 , the outlet splitter having a first splitter outlet and a second splitter outlet claim 31 , the first splitter outlet for receiving water having a higher concentration of some of the colloidal particles than a second splitter outlet.35. A water filtration device comprising:a diffusiophoretic water filter having at least one channel having an inlet and an outlet and for receiving a ...

REMOVAL OF ORGANIC SOLVENTS FROM AQUEOUS PROCESS STREAMS

A method for separating organic solvent(s) from an aqueous process stream including organic solvent(s), includes passing the aqueous stream including organic solvent(s) through a granular bed including glass granules, wherein at least 90% of said glass granules have a maximum particle diameter smaller than 1.0 mm. 1. A method for separating organic solvent(s) from an aqueous process stream comprising organic solvent(s) , the method comprising:passing said aqueous process stream comprising organic solvent(s) through a granular bed comprising glass granules, wherein at least 90% of said glass granules have a maximum particle diameter smaller than 1.0 mm, and whereinsaid aqueous process stream comprises organic solvent(s) is an electrolyte solution resulting from a metal leaching process.2. The method as claimed in claim 1 , wherein the cross section filtration velocity is from 10 to 80 m/h.3. (canceled)4. The method as claimed in claim 1 , wherein at least 90% of said glass granules have a maximum particle diameter smaller than 0.85 mm.5. The method as claimed in claim 1 , wherein at least 50% of said glass granules have a maximum particle diameter greater than 0.1 mm.6. The method as claimed in claim 1 , wherein at least 90% of said glass granules have a maximum particle diameter greater than 0.2 mm.7. The method as claimed in claim 1 , wherein at least 80% of said glass granules have a maximum particle diameter smaller than 0.7 mm.8. The method as claimed in claim 1 , wherein at least 50% of said glass granules have a maximum particle diameter smaller than 0.6 mm.9. The method as claimed in claim 1 , wherein at least 50% of said glass granules have a maximum particle diameter from 0.3 to 0.7 mm.10. The method as claimed in claim 1 , wherein said glass granules are spherical.11. A filter for separating organic solvent(s) from an aqueous process stream comprising said organic solvent(s) claim 1 , comprising:(a) a vessel; '(i) glass granules, wherein at least 90% of ...

FILTRATION SYSTEM AND METHODS OF USING SUCH SYSTEM FOR IMPROVED WATER FILTRATION

A water filtration system is provided that comprises a combination of two components: silver nanoparticles immobilized on a porous carbon solid matrix and calcium carbonate silver nanoparticles. The silver nanoparticles immobilized on the porous carbon solid matrix are prepared in a one-step wet ball milling process that does not use an environmentally hazardous reducing agent or an organic stabilizer. The calcium carbonate in the calcium carbonate silver nanoparticles is preferably isolated from egg shells. The two filter components can be present in any ratio but an approximate 50:50 ratio is preferred. Also provided is an in situ method of preparing silver nanoparticles on active charcoal. Powdered activated charcoal and silver nitrate are mixed together in a mixture of ethanol and water to form a charcoal-silver nitrate solution which is then subjected to ball milling in the presence of polypropylene glycol to produce silver nanoparticles on active charcoal. 1. A water filtration system comprising a combination of two components:a) silver nanoparticles immobilized on a porous carbon solid matrix; andb) calcium carbonate silver nanoparticles.2. The filtration system of wherein the silver nanoparticles immobilized on the porous carbon solid matrix are prepared in a one-step wet ball milling process wherein the wet ball milling process does not use an environmentally hazardous reducing agent or an organic stabilizer.3. The filtration system of wherein the calcium carbonate in the calcium carbonate silver nanoparticles is isolated from egg shells.4. The filtration system of wherein a) and b) are present in a 50:50 ratio.5. The water filtration system of claim 1 , wherein the porous carbon solid matrix comprises carbon nanoparticles.6. The water filtration system of claim 1 , wherein the silver nanoparticles are between the size of 10-35 nanometers.7. The water filtration system of claim 1 , wherein the calcium carbonate silver nanoparticles are between the size of 5 ...

Adsorption filter material with integrated particle and / or aerosol filter function and its use

Gegenstand der Erfindung ist ein Adsorptionsfiltermaterial, welches mit einem integrierten Partikel- und/oder Aerosolschutz und mit einer Schutzfunktion gegenüber biologischen und/oder chemischen Schadstoffen, insbesondere biologischen und/oder chemischen Kampfstoffen, ausgerüstet ist, wobei das Adsorptionsfiltermaterial einen mehrschichtigen Aufbau mit einer Trägerschicht, einer der Trägerschicht zugeordneten, vorzugsweise an der Trägerschicht fixierten Adsorptionsschicht und gegebenenfalls einer auf der der Trägerschicht abgewandten Seite der Adsorptionsschicht angeordneten Abdeckschicht aufweist, wobei das Adsorptionsfiltermaterial zusätzlich mit einer Partikel- und/oder Aerosolfilterschicht ausgerüstet ist. Das Adsorptionsfiltermaterial eignet sich insbesondere zur Verwendung in ABC-Schutzmaterialien aller Art (wie z. B. Schutzbekleidung) sowie zur Herstellung von Filtern. The invention relates to an adsorption filter material which is equipped with an integrated particle and / or aerosol protection and with a protective function against biological and / or chemical pollutants, in particular biological and / or chemical warfare agents, the adsorption filter material having a multilayer structure with a carrier layer, has an adsorption layer assigned to the carrier layer, preferably fixed to the carrier layer, and optionally a cover layer arranged on the side of the adsorption layer facing away from the carrier layer, the adsorption filter material additionally being equipped with a particle and / or aerosol filter layer. The adsorption filter material is particularly suitable for use in all kinds of ABC protective materials (such as protective clothing) and for the manufacture of filters.

Adsorptive filtering material with integrated particle-and/or aerosol-filtering function and use thereof

The invention relates to an adsorptive filtering material endowed with integrated particle- and/or aerosol-protection and with protective performance with regard to biological and/or chemical noxiants, in particular biological and/or chemical warfare agents, the adsorptive filtering material having a multilayered construction comprising a support layer, an adsorptive layer associated to and preferably fixed to the support layer, and optionally a covering layer disposed on that side of the adsorptive layer that is remote from the support layer, wherein the adsorptive filtering material is additionally equipped with a particle- and/or aerosol-filtering layer. The adsorptive filtering material is particularly useful in NBC protective materials of any kind (as in protective apparel for example) and for producing filters.

Filters comprising an activated carbon particle coated with pdadmac and methods of making same

Embodiments of systems and methods for producing a coated activated carbon comprise the steps of providing activated carbon particles having a particle size up to about 100 μm, and coating the activated carbon particles by spraying droplets of a cationic polymer solution onto the surface of the activated carbon particles, wherein the cationic polymer solution comprises about 1% to about 15% by weight cationic polymer and the droplet size is between about 5 μm to about 100 μm.

Activated carbon with a metal based component

The invention relates to an activated carbon, in particular an activated carbon with reactive and/or catalytic activity, said activated carbon being in the form of discrete activated carbon particles, preferably in a spherical and/or grain form. The activated carbon is provided with and/or comprises at least one metal component which has at least one metal-containing ionic liquid (IL) containing, in particular metal ions, preferably based on a metal compound. The invention also relates to methods for producing said activated carbon, to the uses thereof and to materials provided therewith.

Activated carbon, preferably activated carbon equipped and/or fitted with metal component comprising a metal-containing, preferably metal compound-containing ionic liquid, useful as protective material for civil or military purpose

Activated carbon, preferably activated carbon with a reactive and/or catalytic equipment, is claimed, where the activated carbon: is in the form of discrete activated carbon particles, preferably in the form of ball and/or grain; and is equipped and/or fitted with at least one metal component, which contains at least one metal-containing, preferably metal compound-containing ionic liquid.

Nanocrystal-containing filtration media

The invention relates to filtration media having nanocrystals of metal oxides, such as zinc oxide or titanium oxide or mixtures thereof, encapsulated in or impregnated into a binder matrix.

Transition metal oxide-aluminosilicate purification media

The invention, in its various embodiments, relates to a medium for purifying fluids, particularly consumable fluids like air and water, by removing organic materials from the fluids by contacting the fluids with a combination of extremely small diameter transition metal oxide and an aluminosilicate having relatively large pores. In addition, contact of the fluids with the purification medium can also significantly reduce the level of microorganisms existing in the fluid, providing another purification benefit.

Method and system for filtering formaldehyde from inoor air

Embodiments of the present disclosure are directed to systems and methods for removing formaldehyde from indoor air. Some embodiments include flowing an indoor airflow over and/or through a solid supported amine filtering medium, such that, at least a portion of formaldehyde entrained in the indoor airflow is removed therefrom. Some other embodiments include systems having one or more fans for providing velocity to one and/or another airflows (e.g., airflows to/from a formaldehyde filter).

Process of manufacturing a microporous sheet material

A process of manufacturing a microporous sheet by forming a blend of a polyolefin, silica and a water insoluble plasticizer, forming a sheet from the blend, and contacting the sheet with water for a time sufficient to render the sheet microporous. The plasticizer, being essentially insoluble in water, is easily separated therefrom and recycled. The preferred plasticizers are dialkyl phthalates and dialkyl adipates having between about two and about eleven carbon atoms in the oxo-alcohol moiety.

Processes and filters for desalination of water

In a process for the desalination of water, an impure, salt-containing water feed is passed through one or more filter media to remove from the feed impurities having a particle size greater than 50 µm and produce a first filtered water stream. The first filtered water stream is then passed through at least one further filter having an average pore size of 1 µm to 60 µm produced from sintered polyethylene particles having a molecular weight of at least 4 x 10 5 g/mol as determined by ASTM-D 4020 to remove at least a portion of the impurities having a particle size less than or equal to 50 µm from the first filtered water stream and produce a second filtered water stream. The second filtered water stream is passed directly to a reverse osmosis membrane to produce a purified water stream.

Activated carbon filter

The present invention relates to a novel polymer as binder for producing activated carbon filters. The polymer of the invention is a polyethylene homopolymer and/or copolymer having a melt flow index (MFI 190/15) of from 1.2 g/10 min to 10 g/10 min, a polydispersity M w /M n of from 3 to 30, a bulk density of from 0.05 g/cm 3 to 0.5 g/cm 3 and a particle size from 5 μm to 300 μm.

Activated carbon filter

The present invention relates to a novel polymer as binder for producing activated carbon filters. The polymer of the invention is a polyethylene homopolymer and/or copolymer having a melt flow index (MFI 190/15) of from 1.2 g/10 min to 10 g/10 min, a polydispersity M w /M n of from 3 to 30, a bulk density of from 0.05 g/cm 3 to 0.5 g/cm 3 and a particle size from 5 μm to 300 μm.

一种防丙烯口罩及其制备方法

本发明公开了一种防丙烯口罩及其制备方法，防丙烯口罩包括依次设置的纤维布接触层、抗静电无纺布层和富勒烯/纳米二氧化钛纺粘层的缝合而成；其中，富勒烯/纳米二氧化钛纺粘层为采用纺粘法将改性树脂材料纺成纤网而后制成，改性树脂材料的原料包括基体树脂、羧基化富勒烯衍生物、纳米二氧化钛、润滑剂和偶联剂，改性树脂材料通过如下方法制备：将羧基化富勒烯衍生物与所述纳米二氧化钛混合反应制成羧基化富勒烯衍生物修饰的纳米二氧化钛，然后将其与原料中的剩余组分共混挤出，制成；本发明口罩不仅使用且携带方便，而且能够阻止丙烯从人体呼吸器官进入人体，防丙烯效果好，同时还具有防静电功能，尤其适于丙烯生产车间的使用。

FILTERS COMPRISING ACTIVATED CARBON PARTICLES COATED WITH POLYDIALLYDIMETHYLAMMONIUM CHLORIDE (pDADMAC) AND METHODS FOR PRODUCTION THEREOF

FIELD: chemistry. SUBSTANCE: invention relates to water filters containing activated carbon with a polymer coating and methods for production thereof. A method of producing coated activated carbon includes producing activated carbon particles having an average particle size of up to 100 mcm and coating the activated carbon particles by spraying droplets of a cationic polymer solution onto the surface of the activated carbon particles, wherein the cationic polymer solution includes about 2 wt % to about 4 wt % of the cationic polymer and the droplet size is between about 15 mcm to about 55 mcm, wherein the cationic polymer contains polydiallydimethylammonium chloride (pDADMAC), having the weight-average molecular weight (Mw) of up to about 200000 g/mol and the number-average molecular weight (Mn) of up to about 100000 g/mol. EFFECT: invention enables to obtain filters with the improved capability of removing impurities. 16 cl, 5 dwg, 2 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК B01J 20/20 B01J 20/26 B01J 20/32 C02F 1/28 B01D 39/14 (13) 2 572 884 C2 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2012129514/05, 09.12.2010 (24) Дата начала отсчета срока действия патента: 09.12.2010 Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 27.01.2014 Бюл. № 3 (45) Опубликовано: 20.01.2016 Бюл. № 2 (73) Патентообладатель(и): ПУР ВОТЕР ПЬЮРИФИКЕЙШН ПРОДАКТС, ИНК. (US) (85) Дата начала рассмотрения заявки PCT на национальной фазе: 16.07.2012 (86) Заявка PCT: 2 5 7 2 8 8 4 (56) Список документов, цитированных в отчете о поиске: WO 2006/110632 A2, 19.10.2006. RU 2356599 C2, 27.05.2009. US 7537695 B2, 26.05.2019. US 6783713 B2, 31.08.2004. R U 14.12.2009 US 61/286,180 (72) Автор(ы): ПИРКС Эндрю Томас (US), ОНОНИ Алоизиус Ик (US), МИТЧЕЛЛ Майкл Донован (US), КОЛЛИАС Димитрис Иоаннис (US), БЪЙОРКВИСТ Дэвид Уильям (US), БИРС Питер Уильям (US) 2 5 7 2 8 8 ...

过滤介质

本发明公开了吸附剂介质,尤其是得自其中加入了吸附剂颗粒的片状载体基底的吸附剂介质,它可通过气/固或液/固相互作用而用于流体过滤,其中气体或液体中污染物的原子、离子、或分子可用固体吸附剂颗粒进行粘附或留着,这样可将其作为污染物从过滤流体中去除,它是这样制成的:形成包含纤维的流体可渗透基底,所述纤维能够经受与过滤流体长期接触;处理该载体基底以将包括粘合剂和成膜剂的固定剂、和吸附剂颗粒加入载体基底中,其中固定剂,尤其是成膜剂的量仅足以将吸附剂留在载体基底中,这样可基本上避免其中的吸附剂发生脱落。

聚乙烯粉末及由其制得的多孔制品

聚乙烯粉末具有通过ASTM-D 4020确定的约300,000g/mol-约2,000,000g/mol的分子量，约300-约1500μm的平均粒径D 50 ，和约0.25-约0.5g/ml的堆积密度。在烧结时，所述聚乙烯粉末产生具有至少45%的孔隙率和小于5毫巴的压降的多孔制品。该多孔制品用于例如废水曝气以及毛细管和过滤应用。

活性炭过滤器

本发明涉及用作生产活性炭过滤器的粘结剂的新型聚合物。本发明的聚合物是熔体流动指数(MFI 190/15)为1.2g/10min到10g/10min,多分散性Mw/Mn为3－30,堆积密度为0.05g/cm3到0.5g/cm3和粒度为5μm到300μm的聚乙烯均聚物和/或共聚物。

激光增材制造制成的多孔装置

本申请利用激光增材制造技术(LAMT)来制备多孔介质，该多孔介质可用在过滤装置、流量控制装置、药物递送装置以及用于控制流体(例如气体和液体)通过的类似装置或与其相结合。

Adsorption filter material with high adsorption capacity and low penetration behavior and its use

Adsorptionsfiltermaterial (1), insbesondere zur Herstellung von Schutzmaterialien wie ABC-Schutzanzügen, mit einer ersten Schicht (2), einer zweiten Schicht (3) und einer zwischen der ersten Schicht (2) und der zweiten Schicht (3) angeordneten Adsorptionsschicht (4), wobei die Adsorptionsschicht (4) eine erste Aktivkohleschicht (5) mit korn- und/oder kugelförmiger Aktivkohle aufweist, dadurch gekennzeichnet, daß die erste Aktivkohleschicht (5) zusätzlich Aktivkohlefasern aufweist und daß die Adsorptionsschicht (4) zusätzlich eine zweite Aktivkohleschicht (6) mit Aktivkohlefasern aufweist. Adsorption filter material (1), in particular for producing protective materials such as ABC protective suits, comprising a first layer (2), a second layer (3) and an adsorption layer (4) arranged between the first layer (2) and the second layer (3) wherein the adsorption layer (4) comprises a first activated carbon layer (5) with granular and / or spherical activated carbon, characterized, that the first activated carbon layer (5) additionally comprises activated carbon fibers and the adsorption layer (4) additionally has a second activated carbon layer (6) with activated carbon fibers.

Filter for use in vehicle that generates hydrocarbon emissions comprises housing that contains filter element comprising adsorption resin particles on support

A filter for use in a vehicle that generates hydrocarbon emissions comprises a housing that contains a filter element comprising adsorption resin particles on a support and has one side facing the hydrocarbon emission source and another side facing the atmosphere.

고투과성 복합 마그네슘 실리케이트 필터 보조제

복합 필터 보조제는 실리케이트 기판 및 약 1.0:1 초과의 SiO 2 :MgO 몰비를 갖는 침강 마그네슘 실리케이트를 포함할 수 있다. 복합 필터 보조제의 제조 방법은 실리케이트 기판을 제공하는 단계, 실리케이트 기판상에 마그네슘 실리케이트를 침강시켜 복합 필터 보조제를 형성하는 단계를 포함할 수 있으며, 마그네슘 실리케이트의 SiO 2 :MgO의 몰비는 약 1.0:1 초과이다. 비수성 액체의 여과 방법은 여과를 위한 비수성 액체를 제공하는 단계 및 복합 필터 보조제를 통해 비수성 액체를 여과하는 단계를 포함할 수 있다.

Polytetrafluoroethylene porous membrane and method for producing the same, sheet-like polytetrafluoroethylene molded article, and filter medium for air filter

A fine powder of polytetrafluoroethylene is mixed with a liquid lubricant, and the mixture is molded into an unsintered sheet by at least one of an extrusion method and a rolling method. The liquid lubricant is removed from the sheet by at least one of a heating method and an extrusion method. This sheet-form molding is stretched in the machine direction to produce a sheet-form polytetrafluoroethylene molding which, upon analysis with a differential scanning calorimeter, gives a crystal fusion curve having an endothermic peak in the temperature range of 345+/-5 DEG C and which has a degree of crystallization of from 0.1 to 0.85 and a specific gravity of 1.4 or lower. The molding is then stretched in the transverse direction to produce a porous polytetrafluoroethylene (PTFE) membrane. The process is effective in producing, with good reproducibility, a useful porous PTFE membrane which has a high collection efficiency and a low pressure loss and is reduced in the leakage of coarse particles.

Activated carbon filter

The invention relates to a novel polymer used as a binder for producing activated carbon filters. The inventive polymer is a polyethylene homopolymer and/or polyethylene copolymer having a melt index (MFR 190/15) from 1.2 g/10 min to 10 g/10 min, a molecular weight distribution Mw/Mn ranging from 3 to 30, a bulk density ranging from 0.05 g/cm<3> to 0.5 g/cm<3> and a particle size ranging from 5 mu m to 300 mu m.

FILTERS INCLUDING ACTIVATED CARBON PARTICLES COATED WITH POLYDIALLYLDIMETHYLAMMONIUM CHLORIDE (pDADMAC), AND METHODS FOR THEIR MANUFACTURE

1. Способ получения активированного угля с покрытием, включающий:получение частиц активированного угля со средним размером примерно до 100 мкм; и нанесение покрытия на частицы активированного угля путем распыления капель раствора катионного полимера на поверхность частиц активированного угля, причем раствор катионного полимера включает от примерно 1 до примерно 15 мас.% катионного полимера и размер капель составляет от примерно 5 до примерно 100 мкм.2. Способ по п.1, в котором катионный полимер представляет собой полиаллилдиметиламмоний хлорид (pDADMAC), полидиаллилдиметиламмоний трифторметансульфонат (pDADMAT) или оба полимера.3. Способ по п.2, в котором полимер pDADMAC имеет среднемассовую молекулярную массу (Mw) примерно до 200000 г/моль и среднечисленную молекулярную массу (Mn) примерно до 100000 г/моль.4. Способ по п.1, в котором раствор катионного полимера содержит примерно 2-8 мас.% катионного полимера.5. Способ по п.1, в котором раствор катионного полимера содержит примерно 2-4 мас.% катионного полимера.6. Способ по п.1, в котором стадию нанесения покрытия проводят при давлении жидкости примерно 20-90 фунт/кв. дюйм.7. Способ по п.1, в котором стадию нанесения покрытия проводят при давлении воздуха примерно 60-90 фунт/кв. дюйм.8. Способ по п.1, в котором размер капель раствора катионного полимера составляет примерно 15-55 мкм.9. Способ по п.1, в котором размер капель раствора катионного полимера составляет примерно 20-30 мкм.10. Способ по п.1, в котором покрытие из раствора катионного полимера уменьшает вымывание катионного полимера по меньшей мере на 60%.11. Способ по п.1, в котором покрытие из раствора катионного полимера уменьшает вымывание катионного поли� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК B01J 20/20 (11) (13) 2012 129 514 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2012129514/05, 09.12.2010 (71) Заявитель(и): ПУР ВОТЕР ПЬЮРИФИКЕЙШН ПРОДАКТС, ИНК. (US) Приоритет(ы): (30) Конвенционный ...

Formed filter element

A filter medium for use in filtering a mobile fluid made from at least a bicomponent fiber. Other fibers, particles, or other materials can also be entrained in the filter medium. The filter medium has a substantial thickness compared to filters of the prior art. The fiber length and diameter dimensions are selected to obtain desired filter characteristics including thickness, basis weight, pore size, filtration efficiency, pressure drop, burst strength, and manufacturing efficiency. Further, a multilayer filter medium can be provided with ease. Each layer can have a different composition, pore size, basis weight, and so forth, thus providing the ability to build multiple functionality into the filter media of the invention.

Water filter

FIELD: food industry. SUBSTANCE: invention relates to the filtering devices for water treatment, mostly for removal bacteria and viruses. The water filtering device for water treatment contains the connector to provide the liquid connection between the water filter and the untreated drinking water source. The device contains the low pressure water filter which has the water-filtering material containing the mesoporous activated filtering carbon particles. The water filter has the filter bacteria logarithmic removal (F-BLR) more than approximately 2 log and the filter virus logarithmic removal (F-VLR) more than approximately 1 log. The device contains the storage case which has the liquid connection with the low pressure water filter. The device also has the automatic gate-type valve to stop the flaw of the treated drinking water in the storage case. The device has the dosing unit for dispensing the treated drinking water from the storage case. The treated drinking water can flow to the storage case at rate of at least 5 ml/min, unless the automatic gate-type valve is activated so as to stop the flaw of the treated drinking water in the storage case. EFFECT: effective water cleaning off microbiologic contaminations without using electric devices. 44 cl, 10 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 329 084 (13) C2 (51) ÌÏÊ B01D B01J B01D C02F 27/00 (2006.01) 20/20 (2006.01) 39/20 (2006.01) 1/28 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2006104644/15, 19.08.2004 (72) Àâòîð(û): ÒÝÍÍÅÐ Äæîí Ä. (US), ÝÌÌÎÍÑ Äýâèä Äæåéìñ (US), ÐÀÉÄÝË Ðè÷àðä Ï. (US) (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 19.08.2004 (73) Ïàòåíòîîáëàäàòåëü(è): ÏÞÐ ÓÎÒÅÐ ÏÜÞÐÈÔÈÊÅÉØÍ ÏÐÎÄÀÊÒÑ ÈÍÊ. (US) (43) Äàòà ïóáëèêàöèè çà âêè: 27.09.2007 R U (30) Êîíâåíöèîííûé ïðèîðèòåò: 19.08.2003 US 10/643,669 (45) Îïóáëèêîâàíî: 20.07.2008 Áþë. ¹ 20 2 3 2 9 0 8 4 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ...

Polyethylene powders and porous articles produced therefrom

A polyethylene powder has a molecular weight in the range of about 300,000 g/mol to about 2,000,000 g/mol as determined by ASTM-D 4020, an average particle size, D 50 , between about 300 and about 1500 μm, and a bulk density between about 0.25 and about 0.5 g/ml. On sintering, the polyethylene powder produces a porous article having a porosity of at least 45% and a pressure drop less than 5 mbar. The porous article is useful in, for example, wastewater aeration and capillary and filtration applications.

Activated carbon filter

The present invention relates to a novel polymer as binder for producing activated carbon filters. The polymer of the invention is a polyethylene homopolymer and/or copolymer having a melt flow index (MFI 190/15) of from 1.2 g/10 min to 10 g/10 min, a polydispersity M w /M n of from 3 to 30, a bulk density of from 0.05 g/cm 3 to 0.5 g/cm 3 and a particle size from 5 μm to 300 μm.

Polyethylene powders and porous articles produced therefrom

Activated carbon filter

The invention relates to a novel polymer used as a binder for producing activated carbon filters. The inventive polymer is a polyethylene homopolymer and/or polyethylene copolymer having a melt index (MFR 190/15) from 1.2 g/10 min to 10 g/10 min, a molecular weight distribution Mw/Mn ranging from 3 to 30, a bulk density ranging from 0.05 g/cm3 to 0.5 g/cm3 and a particle size ranging from 5 νm to 300 νm.

Activated carbon filter

The invention relates to a novel polymer used as a binder for producing activated carbon filters. The inventive polymer is a polyethylene homopolymer and/or polyethylene copolymer having a melt index (MFR 190/15) from 1.2 g/10 min to 10 g/10 min, a molecular weight distribution Mw/Mn ranging from 3 to 30, a bulk density ranging from 0.05 g/cm3 to 0.5 g/cm3 and a particle size ranging from 5 νm to 300 νm.

Filter and method of its production

FIELD: process engineering. SUBSTANCE: invention relates to water self-weight filtration filters and method of their production. Proposed filter comprises filtration unit including minced filtration medium and polymer binder that feature melt flow rate lower than 5 g/10 min, and end plate moulded integral with said filtration unit. End plate has fluid passage and is made from polymer that features melt flow rate lower than 5 g/10 min. EFFECT: higher reliability, no leaks. 15 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 437 706 (13) C2 (51) МПК B01D 39/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009102074/05, 01.06.2007 (24) Дата начала отсчета срока действия патента: 01.06.2007 (73) Патентообладатель(и): ЮНИЛЕВЕР Н.В. (NL) (43) Дата публикации заявки: 27.07.2010 Бюл. № 21 2 4 3 7 7 0 6 (45) Опубликовано: 27.12.2011 Бюл. № 36 (56) Список документов, цитированных в отчете о поиске: WO 2005/094966 A1, 13.10.2005. WO 2005/095284 A1, 13.10.2005. US 4882055 A, 21.11.1989. US 4753728 А, 28.06.1988. RU 2004110793 А1, 10.10.2005. 2 4 3 7 7 0 6 R U (86) Заявка PCT: EP 2007/055395 (01.06.2007) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 23.01.2009 (87) Публикация заявки РСТ: WO 2007/147716 (27.12.2007) Адрес для переписки: 103735, Москва, ул. Ильинка, 5/2, ООО "Союзпатент", пат.пов. Ю.В.Пинчуку, рег.№ 656 (54) ФИЛЬТР И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ (57) Реферат: Изобретение относится к фильтрам, в частности, для фильтрования воды под действием гравитации и к процессу изготовления таких фильтров. Изобретение также относится к устройству гравитационного фильтрования, использующему фильтр по изобретению, сформированный фильтр является более надежным и менее подвержен протеканию, по сравнению с подобными типами фильтров, известными из современного уровня техники. Фильтр содержит фильтрующий блок, включающий измельченную фильтрующую среду и полимерное связующее вещество, имеющие ...

Production of filter

Adsorption filter material, particularly for producing nbc protective clothing having improved wearing physiology

본 발명은, 바람직하게는 특히 속옷(내의)으로서 피부에 착용하기 위한, 특히 ABC 보호 의류용의, 흡착 필터 재료에 관한 것이고, 흡착 필터 재료는 다층 구조를 가지며, 다층 구조는 제 1 텍스타일 시트 재료, 제 2 텍스타일 시트 재료 및 제 1 및 제 2 텍스타일 시트 재료 사이에 배치된 흡착층을 포함하고, 흡착층은 바람직하게는 활성탄을 기재로 하는, 화학적 및/또는 생물학적 독소 및 유해 물질, 구체적으로 전쟁 작용제를 흡착하는 분리된, 특히 과립형의, 바람직하게는 구형의 수착제 입자를 포함한다. 흡착 필터 재료는 제 1 텍스타일 시트 재료 및 제 2 텍스타일 시트 재료를 각각 적어도 한 방향, 바람직하게는 양 방향으로 탄성이 되도록 디자인된다는 것, 및/또는 제 1 텍스타일 시트 재료 및 제 2 텍스타일 시트 재료가 적어도 실질적으로 동일한 탄성 특성을 가지는 것을 특징으로 한다. 흡착 재료는 높은 착용감과 동시에 화학적 독소에 대한 우수한 보호를 제공한다. The present invention preferably relates to adsorption filter materials, in particular for ABC protective garments, especially for wearing on the skin as underwear, in which the adsorption filter material has a multilayer structure, the multilayer structure being the first textile sheet material. , An adsorbent layer disposed between the second textile sheet material and the first and second textile sheet materials, wherein the adsorbent layer is preferably based on activated carbon, specifically chemical and / or biological toxins and hazardous substances, specifically war It includes discrete, especially granular, preferably spherical, sorbent particles that adsorb the agent. The adsorptive filter material is designed to be resilient to the first textile sheet material and the second textile sheet material, respectively, in at least one direction, preferably in both directions, and / or the first textile sheet material and the second textile sheet material are at least It is characterized by having substantially the same elastic properties. The adsorbent material provides a high fit and at the same time good protection against chemical toxins. 보호 의류, 텍스타일 시트 재료, 흡착 필터, 탄성, 신축성 Protective clothing, textile sheet material, adsorption filter, elasticity, elasticity

Filters with improved permeability and possibility of removing viruses

FIELD: instrument making. SUBSTANCE: invention relates to filtration. The invention covers the filtration unit that features permeability exceeding some 3.0*10 -9 cm and F-VLR exceeding 99%. The proposed filtration unit can be produced from filtration particles with their average grain size below approximately 50 mc and particle length making about 1.4 or less. In compliance with this invention, the filtration units can be used to produce filters for filtration of fluids, particularly, drinking water. Filtration particles can represent mesoporous particles. This invention proposes also the sets comprising the filters and data related to killing or removing bacteriums, viruses and microbes. EFFECT: higher efficiency of filtration. 21 cl, 3 dwg, 1 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 356 599 (13) C2 (51) МПК B01D 39/00 (2006.01) C02F 1/28 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2006138432/15, 05.05.2005 (24) Дата начала отсчета срока действия патента: 05.05.2005 (73) Патентообладатель(и): ПЮР УОТЕР ПЬЮРИФИКЕЙШН ПРОДАКТС ИНК. (US) (43) Дата публикации заявки: 20.06.2008 2 3 5 6 5 9 9 (45) Опубликовано: 27.05.2009 Бюл. № 15 (56) Список документов, цитированных в отчете о поиске: WO 00/71467 A1, 30.11.2000. US 2003/03034290 A1, 20.02.2003. WO 03/068686 A1, 21.08.2003. EP 0616975 A, 28.09.1994. US 2003/217963 A1, 27.11.2003. 2 3 5 6 5 9 9 R U (86) Заявка PCT: US 2005/015745 (05.05.2005) C 2 C 2 (85) Дата перевода заявки PCT на национальную фазу: 06.12.2006 (87) Публикация PCT: WO 2005/108300 (17.11.2005) Адрес для переписки: 105215, Москва, Щелковское ш., 48-1, а/я 26, Н.А.Рыбиной (54) ФИЛЬТРЫ С УЛУЧШЕННОЙ ПРОНИЦАЕМОСТЬЮ И ВОЗМОЖНОСТЯМИ УДАЛЕНИЯ ВИРУСОВ (57) Реферат: Изобретение относится к области фильтрования. Предлагается фильтровальный блок с проницаемостью больше, чем примерно 3,0·10 -9 см и F-VLR больше чем 99%. Фильтровальный блок может быть изготовлен из ...

Air filter and method for preventing spreading of infections

FIELD: chemistry.SUBSTANCE: use of an active ingredient containing a plurality of particles having a core of metallic copper with an electrically conductive coating containing silver is disclosed for the inactivation of infectious microorganisms. The air filter contains an air-permeable filter case, an active ingredient, and a binder to bind the active ingredient to the air-permeable filter case.EFFECT: technical result is providing an air filter and a method that prevent the spreading of infections.15 cl, 3 dwg, 1 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 752 190 C1 (51) МПК A41D 13/11 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК A41D 13/11 (2021.05); A62B 18/02 (2021.05); G21F 9/02 (2021.05) (21)(22) Заявка: 2020134353, 20.10.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Лайнисало Капитал ОЮ (EE) Дата регистрации: 23.07.2021 Приоритет(ы): (30) Конвенционный приоритет: 12.10.2020 FI 20205999 (45) Опубликовано: 23.07.2021 Бюл. № 21 2 7 5 2 1 9 0 R U (54) Воздушный фильтр и способ предотвращения передачи инфекций (57) Реферат: Раскрыто применение активного ингредиента, воздухопроницаемый корпус фильтра, активный содержащего множество частиц, имеющих ядро ингредиент и связующее для связывания из металлической меди с электропроводящим активного ингредиента с воздухопроницаемым покрытием, содержащим серебро, для корпусом фильтра. 5 н. и 10 з.п. ф-лы, 1 табл., 3 инактивации переносящих инфекцию ил. микроорганизмов. Воздушный фильтр содержит Стр.: 1 C 1 C 1 Адрес для переписки: 191036, г. Санкт-Петербург а/я 24 "НЕВИНПАТ", Поликарпов Александр Викторович 2 7 5 2 1 9 0 (56) Список документов, цитированных в отчете о поиске: GB 2524849 A, 07.10.2015. Grouchko M. et al. Formation of air-stable copper-silver core-shell nanoparticles for ink-jet printing // J. Mater. Chem., 2009, реферат. WO 2007003047 А1, 11.01.2007. RU 2357030 С2, 27.05.2009. RU 2552467 С1, 10.06.2015. US ...

FILTER AND METHOD OF ITS MANUFACTURE

1. Способ изготовления фильтра, отличающийся тем, что содержит стадии: ! a) укладка полимера толщиной, желаемой для концевой пластины, в форму; ! b) перемешивание измельченной фильтрующей среды и полимерного связующего материала, имеющих скорость течения расплава меньше, чем 5 г/10 мин; ! c) добавление смеси, полученной в стадии (b) в форму; ! d) нагревание формы до температуры в диапазоне 150 до 350°C ! e) извлечение из формы сформованного фильтра. ! 2. Способ по в п.1, отличающийся тем, что помещают полимер до желаемой толщины второй концевой пластины в форму. ! 3. Способ по п.2, отличающийся тем, что осуществляют прессование формы перед ее нагреванием. ! 4. Способ по п.3, отличающийся тем, что форму прессуют путем приложения давления не более чем 12 кг/см2. ! 5. Способ по п.4, отличающийся тем, что давление составляет от 4 до 8 кг/см2. ! 6. Способ по любому из пп.1-5, отличающийся тем, что полимер концевой пластины заранее отпрессован в желаемом виде перед помещением в форму. ! 7. Способ по любому из пп.1-5, отличающийся тем, что полимер концевой пластины находится в виде частиц, когда его помещают в форму. ! 8. Способ по любому из пп.1-5, отличающийся тем, что форму нагревают до температуры 200 до 300°C. ! 9. Способ по любому из пп.1-5, отличающийся тем, что полимерный связующий материал и измельченную фильтрующую среду перемешивают в течение, по меньшей мере, 15 мин. ! 10. Способ по п.9, отличающийся тем, что перемешивание проводят в течение 20-60 мин. !11. Способ по любому из п.10, отличающийся тем, что перемешивание осуществляют в сигма-мешалке. ! 12. Фильтр, получаемый способом по любому из пп.1-11, отличающийся тем, что содержит: ! фильтрующий блок, содержащий измельченную РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2009 102 074 (13) A (51) МПК B01D 39/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21), (22) Заявка: 2009102074/05, 01.06.2007 (71) Заявитель(и): ЮНИЛЕВЕР Н.В. (NL) (30) ...

High-purity composite materials, methods of making high-purity composite materials, and methods of using high-purity composite materials

A composite filter aid may include acid-washed diatomaceous earth and a low extractable metal mineral. A method for making a composite material may include blending an acid-washed diatomaceous earth and a low extractable metal mineral, adding a binder to the blended diatomaceous earth and low extractable metal mineral, and forming the composite material from the acid-washed diatomaceous earth, the low extractable metal mineral, and the binder. A method for filtering a liquid may include providing a liquid for filtering and filtering the liquid through a composite filter aid that includes an acid-washed diatomaceous earth and a low extractable metal mineral.

High density perlite filter aid

The present disclosure includes filter aids comprising expanded perlite and methods for preparation thereof. The perlite used for making the filter aids may be processed by dehydration, expansion, milling, and/or screening. The expanded perlite has a higher density compared to expanded perlite prepared without dehydration.

Exhaust gas cleaning catalyst and process for production thereof

Abstract of the Disclosure An exhaust gas cleaning catalyst composed of a refractory three-dimensional structure and a catalytical-ly active substance supported thereon. That surface or part of the catalyst which makes contact with an exhaust gas is formed of numerous irregularly arranged pro-trusions composed of a refractory inorganic powder having a particle diameter of 5 to 300 micrometers or a mixture of it with refractory inorganic fibers and the cata-lytically active substance supported on the protrusions. The catalyst can be produced, for example, by preparing an aqueous slurry from the refractory inorganic powder having a particle diameter of 5 to 300 micrometers or a mixture of it with the refractory inorganic fibers and a suitable dispersant, forming numerous irregularly arranged protrusions on that surface or part of a refractory three-dimensional structure which makes contact with an exhaust gas by using the resulting slurry, drying the structure optionally followed by calcination, depositing the cata-lytically active substance, and drying and calcining the resulting structure.

Filter comprising a coating layer of flake-like powders and a preparation method thereof

The present invention is to provide a filter having excellent filtration rate and transmittance, and a manufacturing method thereof. To this end, the filter of the present invention comprises: a porous metal support having a first pore size; and a metal coating layer formed on the porous metal support and having a second pore size smaller than the first pore size, wherein the metal coating layer has a three-dimensional pore structure by bonding metal powers of a flake shape. According to the present invention, a second powder of a flake shape forms a coating layer so the porosity increases to increase transmittance, and also, a flow path becomes more complicated, thereby simultaneously increasing a filtration rate. In addition, the thickness of the coating layer for obtaining the same transmittance and filtration rate is relatively small as compared to a case of using spherical powder, thereby reducing the amount of the required raw material of the coating layer. Furthermore, the flow path becomes very complicated by a flake-shaped powder, forming the coating layer, thereby not requiring to introduce an additional layer for filtering fine particles.

FLAT, FLEXIBLE LAYERED BODY FOR TREATING GASES OR LIQUIDS AS WELL AS A PROCEDURE FOR MANUFACTURING SUCH A BODY.

FLAT, FLEXIBLE LAMINATED BODY FOR THE TREATMENT OF GASES OR LIQUIDS, THE PROCESS FOR ITS MANUFACTURING AND ITS USE

Carbon filter for purifying wastewater and air

본 고안은 기계적 합금화 방식에 의하여 얻어진 흑연 분말을 포함하여 제작이 용이하고 대량 생산이 가능하며 암모니아 제거 등의 탁월한 효과와 함께 공기와 오폐수의 정화 및 청정에 모두 사용 가능한 오폐수 및 공기 정화용 탄소필터를 제공하고자 한다. The present invention provides a carbon filter for wastewater and air purification, which includes graphite powder obtained by mechanical alloying method, which is easy to manufacture, can be mass-produced, and has excellent effects such as ammonia removal and can be used for both purification and purification of air and wastewater. I would like to. 본 고안의 오폐수 및 공기 정화용 탄소필터는 부직포(10)를 갖되, 상기 부직포(10)에 흑연 분말(30)이 폴리머 접착제(20)를 매개로 하여 점착되어 있는 필터 본체(100)를 포함하여 오염 입자와 이물질을 제거 및 정화시킬 수 있는 능력이 탁월하고, 또한 간편한 제조방법에 의해 양산되어서 공기정화 및 청정산업 분야에서 널리 이용 가능하다. The wastewater and air purification carbon filter according to the present invention has a nonwoven fabric 10, which includes a filter body 100 in which graphite powder 30 is adhered to the nonwoven fabric 10 through a polymer adhesive 20. The ability to remove and purify particles and debris is excellent, and is mass-produced by a simple manufacturing method, making it widely available in the air purification and clean industries.

Bonded carbon or ceramic fiber composite filter vent for radioactive waste

Carbon bonded carbon fiber composites as well as ceramic or carbon bonded ceramic fiber composites are very useful as filters which can separate particulate matter from gas streams entraining the same. These filters have particular application to the filtering of radioactive particles, e.g., they can act as vents for containers of radioactive waste material.

Filter media, method for manufacturing thereof and Filter unit comprising the same

필터여재가 제공된다. 본 발명의 일 실시예에 따른 필터여재는 다공성의 제1지지체; 상기 제1지지체의 상부 및 하부 각각에 적층되고, MD(Mechanical Direction) 방향의 인장강도가 TD(Transverse Direction) 방향의 인장강도 보다 큰 나노섬유웹; 및 상기 제1지지체와 나노섬유웹 사이에 개재되는 다공성의 제2지지체;를 포함하여 구현된다. 이에 의하면, 본 발명에 따른 필터여재의 나노섬유웹은 우수한 기계적 강도를 가지고 있기 때문에 수처리 과정에서 필터여재의 형상이나 구조 변형 및 손상이 최소화되고 유로가 원활히 확보되어 높은 유량을 가질 수 있다. 또한, 본 발명의 필터여재는 역세척시 가해지는 높은 압력에도 필터여재의 뛰어난 내구성이 담보되고, 연장된 사용주기를 가짐과 동시에 효율적으로 오염을 제어하고 우수한 수투과도를 가짐에 따라서 각종 수처리 분야에서 다양하게 응용될 수 있다.

Water-insoluble linear polysaccharides for filtration

Filter with inorganic cationic colloidal silica

ABSTRACT A filter media sheet comprising fine particulate and a self-bonding matrix of cellulose fiber, the surfaces of at least one of which are modified with cationic colloidal silica.

Microemulsion polymerization systems and coated materials made therefrom coated articles coated of microemulsion and process for producing them

A találmány gázáteresztő, főkőzőtt hidrőfób és őleőfóbtűlajdőnságőkkal rendelkező, bevőnattal ellátőtt cikkekre vőnatkőzik,amelyek ismétlődő függő flűőrőzőtt, szerves őldalláncőkkal rendel ezőés 0,01 és 0,5 mikrőméter közötti átlagős részecskeméretű szervespőlimer részecskéit tartalmazó vizes latexből felvitt bevőnattalvannak ellátva. A találmány tárgyát képezi tővábbá egy eljárásbevőnattal ellátőtt cikkek előállítására, őly módőn, hőgy a cikkeketőlyan vizes latexszel vőnják be, amelyben egy ismétlődő függőflűőrőzőtt, szerves ő dalláncőkkal rendelkező és 0,01 és 0,5mikrőméter közötti átlagős szemcseméretű szerves pőlimer részecskéivannak jelen. ŕ

Compression method for filtration with a viscose-cellulose-perlite mixture

Die Erfindung betrifft ein kompressibles Filterhilfsmittel zur Anschwemmfiltration, insbesondere zur Bierfiltration sowie ein entsprechendes Filterverfahren. Das Filterhilfsmittel umfasst Viskosefasern, Zellulosefasern und Perlite. The invention relates to a compressible filter aid for precoat filtration, in particular for beer filtration, and a corresponding filter method. The filter aid includes viscose fibers, cellulose fibers and perlite.

Material for purifying a contaminant, filter for purifying a contaminant containing the same and device for purifying a contaminant containing the same

오염 물질 흡착제(a material for an adsorption of a contaminant) 및 오염 물질 분해제(a material for decomposition of a contaminant)를 포함하고, 상기 오염 물질 흡착제와 상기 오염 물질 분해제는 서로 복합화되어 있고, 상기 오염 물질 분해제의 오염 물질 분해 개시 온도가 상기 오염 물질 흡착제의 오염 물질 탈착 개시 온도와 동일하거나 낮은, 오염 물질 정화제(a material for purifying a contaminant), 이를 포함한 오염 물질 정화 필터 및 오염 물질 정화 장치가 제공된다.

Inorganic material sintered filter medium with thermosetting resin and its manufacturing method

본 발명은 열경화성 수지가 첨가된 무기물 소결 여과재 및 그 제조방법에 관한 것으로, 제올라이트, 백토 등의 무기물 미립자와 미세분말 형태의 열경화성 수지를 균일하게 혼합하여 가열, 가압, 경화에 의해 다공성 구조로 성형하여 이루어진 것을 특징으로 하는 것으로, 다양한 용도로 사용가능하면서도 여과능력 및 기계적 물성이 우수하고, 저렴한 비용으로 용이하게 제조할 수 있는 것이다.

REACTOR AND METHOD FOR GASIFICATION OF BIOMASS, DEVICE FOR PRODUCING GAS FROM BIOMASS, FILTER FOR FINE CLEANING OF GAS PRODUCED FROM BIOMASS, AND METHOD FOR CLEANING THE NAME GAS

1. Реактор (1) газификации биомассы, в частности, древесины, включающий камеру (7) загрузки и зольник, расположенный ниже камеры (7) загрузки, отличающийся тем, что он включает устройство отделения отложений биомассы от камеры (7) загрузки и/или теплообменник, выполненный с возможностью передачи теплоты от полученного из биомассы газа к вновь поступающей в камеру (7) загрузки биомассе и к окисляющему воздуху.2. Реактор (1) по п. 1, отличающийся тем, что он включает многослойную оболочку, выполненную с возможностью проникновения теплоты от полученного из биомассы газа к окисляющему воздуху и вновь поступающей биомассе.3. Реактор (1) по п. 1, отличающийся тем, что он включает встряхивающее устройство (8), выполненное с возможностью передачи вибрации камере (7) загрузки с последующим отделением отложений биомассы от камеры (7) загрузки.4. Реактор (1) по п. 1, отличающийся тем, что он включает клиновый затвор, выполненный с возможностью пропускания биомассы в камеру (7) загрузки.5. Реактор (1) по п. 1, отличающийся тем, что он включает герметизирующее подающее устройство, выполненное с возможностью поступления биомассы в камеру (7) загрузки без пропускания кислорода.6. Реактор (1) по п. 1, отличающийся тем, что камера (7) загрузки содержит зону (13) горения и нижнюю область (12), выполненую в форме конуса, в частности, с соотношением поперечного сечения камеры (7) загрузки к поперечному сечению зоны (13) горения в диапазоне от 1,2 до 10, предпочтительно - от 1,4 до 3, особенно предпочтительно - равным приблизительно 1,9.7. Реактор (1) по п. 1, отличающийся тем, что он включает вход (43) подачи окисляющего воздуха, промежуточную область и кольцевое устройство (15) подачи РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК C10J 3/74 (11) (13) 2014 105 490 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014105490/05, 24.05.2012 (71) Заявитель(и): РЭП Риньюэбл Энеджи Продактс ГмбХ (AT) Приоритет(ы): (30) Конвенционный ...

Electrostatic air filter

FIELD: treatment facilities. SUBSTANCE: invention is related to filtering materials for cleaning of gaseous medium, in which nanosize first fibres of aluminium oxide and second fibres are arranged in the form of matrix with formation of asymmetric pores, at the same time each of specified second fibres has diametre in the range from approximately 0.6 mcm to approximately 3.5 mcm, at the same time asymmetric pores have average size of more than approximately 10 mcm and less then approximately 38 mcm, material may retain particles, size of which is many times less than specified pore size. EFFECT: according to invention, filter has high efficiency of filtration and high absorbing property. 47 cl, 7 tbl, 14 dwg, 10 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 378 035 (13) C1 (51) МПК B01D 39/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2008114377/15, 12.09.2006 (24) Дата начала отсчета срока действия патента: 12.09.2006 (72) Автор(ы): ТЕППЕР Фредерик (US), КАЛЕДИН Леонид А. (US) (45) Опубликовано: 10.01.2010 Бюл. № 1 2 3 7 8 0 3 5 (56) Список документов, цитированных в отчете о поиске: US 2003127393 A1, 10.07.2003. RU 2242276 C1 A1, 27.11.2003. RU 21946666 C2 A1, 20.12.2000. RU 2079349 C1 A1, 20.05.1997. (85) Дата перевода заявки PCT на национальную фазу: 14.04.2008 2 3 7 8 0 3 5 R U (87) Публикация PCT: WO 2007/033173 (22.03.2007) C 1 C 1 (86) Заявка PCT: US 2006/035488 (12.09.2006) Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. С.А.Дорофееву, рег.№ 146 (54) ЭЛЕКТРОСТАТИЧЕСКИЙ ВОЗДУШНЫЙ ФИЛЬТР (57) Реферат: Изобретение относится к фильтрующим материалам для очистки газообразной среды, в котором наноразмерные первые волокна из оксида алюминия и вторые волокна расположены в виде матрицы с образованием асимметричных пор, причем каждое из указанных вторых волокон имеет диаметр в интервале от примерно 0, ...

Carbonaceous material and its manufacturing method, and filter and water purifier for water purification

본 발명의 일 국면은, 벤젠 흡착량이 25 ∼ 40 ％ 이고, 비타민 B12 의 흡착량이 13.0 ∼ 50.0 mg/g, 질소 흡착 등온선으로부터 BJH 법에 의해 산출한 메조포러스의 세공 용적이 0.070 ∼ 0.150 ㎤/g 인, 탄소질 재료에 관한 것이다. In one aspect of the present invention, the adsorption amount of benzene is 25 to 40%, the adsorption amount of vitamin B12 is 13.0 to 50.0 mg/g, and the pore volume of the mesoporous calculated by the BJH method from the nitrogen adsorption isotherm is 0.070 to 0.150 cm 3 /g. It relates to phosphorus and carbonaceous materials.

coating solution

균일한 도공이 가능하고, 형성된 분진 포집층이 쉽게 필터 엘리먼트 소재로부터 박리되지 않으며, 또한 작은 입자경의 미분체 제품의 포집이 가능한, 분진 포집층 형성용 도공액의 제공. 미세 분립체, 도파민 염산염, 접착제를 포함하는 집진 필터의 분진 포집층 형성용 도공액.

Filters Comprising An Activated Carbon Particle Coated With pDADMAC And Methods Of Making Same

生产涂布的活性炭的体系与方法的实施方案包括下述步骤：提供粒度最多约100微米的活性炭颗粒，和通过喷洒阳离子聚合物溶液的液滴到活性炭颗粒表面上，其中阳离子聚合物溶液包括约1%-约15%重量的阳离子聚合物和液滴大小为约5微米-约100微米。

A filter media

A filter media suitable for use in filtering fluids is provided. The filter media comprises a first component, said first component having a core with an Al₂O₃ content of at least 10 wt% and a nanoalumina coating that at least partially coats the core.

SOFT AND FLEXIBLE LAMINATED BODY FOR THE TREATMENT OF GAS OR LIQUIDS AND PROCESS FOR ITS MANUFACTURE AND USE

DES PARTICULES DE CONSTITUANT ACTIF SONT IMMOBILISEES SOUS LA FORME D'UN CORPS STRATIFIE SOUPLE ET SUPERFICIEL. LES CONSTITUANTS ACTIFS SERVENT AU TRAITEMENT D'UN MILIEU GAZEUX OU LIQUIDE CIRCULANT ENTRE LE CORPS STRATIFIE. CES PARTICULES 1 SONT ENFERMEES ENTRE UNE COUCHE SOUS-JACENTE 2, 3 ET UNE COUCHE DE COUVERTURE FIBREUSE 4 ET LES DEUX COUCHES SONT ASSEMBLEES L'UNE A L'AUTRE AU MOYEN DE FIBRES DE RETENUE 6 REPARTIES A L'ETAT TRES DENSE SUR LA SURFACE ENTIERE, ANCREES SIMULTANEMENT DANS LES DEUX COUCHES. CES FIBRES DE RETENUE 6 SONT PRELEVEES DE LA COUCHE DE COUVERTURE 4 AU MOYEN D'AIGUILLES. PARTICLES OF THE ACTIVE CONSTITUENT ARE IMMOBILIZED IN THE FORM OF A SOFT AND SUPERFICIAL LAMINATE BODY. THE ACTIVE CONSTITUENTS ARE USED FOR THE TREATMENT OF A GASEOUS OR LIQUID MEDIUM CIRCULATING BETWEEN THE LAMINATED BODY. THESE PARTICLES 1 ARE ENCLOSED BETWEEN AN UNDERLYING LAYER 2, 3 AND A FIBROUS COVER LAYER 4 AND THE TWO LAYERS ARE ASSEMBLED TO ONE ANOTHER BY MEANS OF RETAINING FIBERS 6 DISTRIBUTED IN A VERY DENSE STATE ON THE ENTIRE SURFACE, ANCHORED SIMULTANEOUSLY IN BOTH LAYERS. THESE RETAINING FIBERS 6 ARE TAKEN FROM THE COVER LAYER 4 BY MEANS OF NEEDLES.

Porous body comprising particles of aluminum nitride, process for their preparation and their applications

L'invention concerne des corps poreux en céramique comprenant des particules de nitrure d'aluminium présentant un rapport d'aspect au moins égal à 5. Leur procédé de préparation par carbonitruration à partir d'alumine est caractérisé en ce qu'il met en œuvre des particules d'alumine présentant un rapport d'aspect au moins égal à 5. Ces corps poreux sont utilisables tels quels ou pour la confection de matériaux composites notamment à matrice métallique, céramique ou polymérique. The invention relates to porous ceramic bodies comprising particles of aluminum nitride having an aspect ratio of at least 5. Their method of preparation by carbonitriding from alumina is characterized in that it implements alumina particles having an aspect ratio of at least 5. These porous bodies can be used as they are or for making composite materials, in particular with a metallic, ceramic or polymer matrix.