148results about How to "High filtration efficiency" patented technology

A membrane module (5) including a plurality of porous membranes (6) extending in an array and mounted, at least at one end, in a header (8). The header (8) has a number of distribution apertures (11) for distributing a fluid into the module (5) and along a surface or surfaces of the membranes (6). An elongate chamber (10) having one open end (13) and another end is in fluid communication with the distribution apertures (11) for distributing the fluid to the distribution apertures (11).

A cordierite ceramic body having (i) a pore size distribution and a porosity which satisfy the relationship 10.2474/[(d50)<2>(pore fraction)]+0.0366183(d90)-0.00040119(d90)<2>+0.468815(1/pore fraction)<2>+0.0297715(d50)+1.61 639(d50-d10)/d50<=3.65, and (ii) a CTE (25°-800° C.) of <=15X10<-7>/° C., wherein the cordierite ceramic body is produced from a moldable mixture comprising cordierite-forming raw materials including (a) a fine talc having a median particle diameter, as measured by laser diffraction, of less than 10 micrometers, and a B.E.T. specific surface area of greater than 5 m<2>/g, and (b) a pore former. The cordierite ceramic body is suitable in the fabrication of cellular, wall-flow diesel particulate filters having a low pressure drop, high filtration efficiency and improved strength.

The invention relates to a web or filter structure such as the filtration media comprising a collection of fiber comprising a first polymer and a second polymer in a fine fiber or fine fiber web structure. The combination of two polymers provides improved fiber rheology in that the fiber has excellent temperature and mechanical stability. The combination of polymers imparts the properties of elasticity or tackiness, which is desirable for adhering particles to the fiber web, with high temperature resistance.

Disclosed are ceramic articles, which in one aspect are composed predominately of a cordierite having a composition close to that of Mg₂Al₄Si₅O₁₈. The ceramic articles possess a microstructure characterized by a unique combination of relatively high porosity and relatively narrow pore size distribution, both as measured by mercury porosimetry, that render the ceramic structure useful for ceramic filter applications requiring high thermal durability and high filtration efficiency coupled with low pressure drop along the length of the filter. Such ceramic bodies are particularly well suited for filtration applications, such as diesel exhaust filters or DPFs. Also disclosed are methods for the manufacture of the ceramic articles described herein.

The present invention provides a nonwoven web prepared from multicomponent fibers which are partially split. The partially split multicomponent fibers have at least one component of the multicomponent fiber separated from the remaining components of the multicomponent fiber along a first section of the longitudinal length of the multicomponent fibers. Along a second section of the longitudinal length of the multicomponent fibers the components of the multicomponent fibers remain together as a unitary fiber structure. In addition, part of the second section of the multicomponent fibers is bonded to part of a second section of an adjacent multicomponent fiber.

A diesel particulate filter comprising a plugged, wall-flow honeycomb filter body composed of cordierite and having a plurality of parallel end-plugged cell channels traversing the body from a frontal inlet end to an outlet end thereof, wherein the filter exhibits a CTE (25–800° C.) of less than 13×10⁻⁷/° C., a bulk filter density of less than 0.60 g/cm³, a median pore diameter, d₅₀, of less than 25 micrometers, a porosity and pore size distribution that satisfy the relationship P_m≦3.75, wherein P_m is equal to 10.2474{1/[(d₅₀)²(% porosity/100)]}+0.0366183(d₉₀)−0.00040119(d₉₀)²+0.468815(100/% porosity)²+0.0297715(d₅₀)+1.61639(d₅₀−d₁₀)/d₅₀, wherein d₁₀, and d₉₀ are pore diameters at 10% and 90% of the pore size distribution on a volumetric basis, and d₁₀<d₅₀<d₉₀. A method of making the same is also provided.

The present invention provides methods for designing a filtration systems for capturing viable tumor cells, such as circulating tumor cells at high efficiency and high viability. The methods involve development of a set of “key engineering design parameters” that are crucial to achieve high tumor cell viability. These important design parameters include the filter geometry design, fluid delivery method, transfilter pressure and total filtration time.

The invention relates to a method for preparing a nanofiber membrane through electrostatic spinning. High-molecular polymer is dissolved in solvent to be stirred till an even solution is obtained; the spinning solution is used for electrostatic spinning, and the nanofiber membrane of a sparse structure can be obtained. The preparing method is convenient and fast to conduct, due to the fact that the obtained nanofiber membrane is of the unique sparse structure, the filtering resistance of the nanofiber membrane is lowered greatly, the influence on the filtering efficiency of the nanofiber membrane is very low and the method has very good application prospects in the filtering field, especially in the air filtering field.

An assembly for filtering contaminants from automatic transmission fluid includes a housing including a first inlet and a second inlet, through which fluid enters the housing, and an outlet, through which fluid exits the housing; a first media filter located within the housing in a first fluid flow path between the first inlet and the outlet; and a second media filter located within the housing in a second fluid flow path between the second inlet and the outlet.

The invention relates to two-component superfine fiber material used for heat insulation and sound absorption based on polypropylene superfine fibers and polyester staple fibers and a preparation method thereof, in particular to two-component sound absorption and heat insulation cotton based on the polypropylene superfine fibers and the polyester staple fibers and a preparation method thereof. The material is specially designed for reducing noise power in a high-noise environment, and has the effects of sound absorption and heat insulation particularly in the aspects of automobiles, high speed trains and the like. The material is also suitable for the aspects of pocket-type or plate-and-frame type filters of heating and ventilating systems, household air cleaners and vacuum dust catchers, factory purification and the like. The two-component sound absorption and heat insulation cotton based on the polypropylene superfine fibers and the polyester staple fibers comprises the polypropylene superfine fibers and the polyester staple fibers, wherein the average fineness of the polypropylene superfine fibers is 1-2 micrometers, and the fineness of the polyester staple fibers is 25-35 micrometers. The two-component material formed by mixing of the polypropylene superfine fibers and the polyester staple fibers is processed through electrostatic electrets, and then the two-component sound absorption and heat insulation cotton is formed.

Hot gas filtration fabrics for bag filters can be made using fibers that include high silica fibers and at least one FR fiber. The fabrics can be made using these fibers by needling and/or water jet entanglement. The fabrics may be treated with binders with or without additives to enhance mechanical properties or to impart other characteristics such as gas adsorption. Certain non-woven fabrics made according to the invention have improved high temperatures filtration capabilities and mechanical properties.

A blood treating set, including a blood collecting device and a blood treating device, the blood collecting device further including a first bag for storing collected blood, a tube for guiding blood into the first bag, and a tube for discharging blood from the first bag. The blood treating device further includes a connected bag body having three bags, that are, a second bag for storing haematosis, a third bag, and a fourth bag. These bags are connected to each other through the tubes and a branch connector. Also, the tube connected to the second bag includes a filter installed midway in the tube. On the tube connected to the first bag and the tube connected to the filter, indications (markers) are placed at positions to show where these portions must be connected.

The present invention provides methods for designing a filtration systems for capturing viable tumor cells, such as circulating tumor cells at high efficiency and high viability. The methods involve development of a set of “key engineering design parameters” that are crucial to achieve high tumor cell viability. These important design parameters include the filter geometry design, fluid delivery method, drive pressure and filtration time.

An object to be solved by the present invention is to provide a method for producing organic acid with higher fermentation efficiency. The present invention provides a method for producing organic acid from an organic material by allowing bacterial cell or treated products thereof to act on an aqueous reaction solution containing the above organic material, which is characterized in that after completion of the reaction, the aqueous reaction solution is recovered, cell or treated products thereof are separated from the recovered aqueous reaction solution, and the separated cell or treated products thereof are allowed to act on a fresh aqueous reaction solution, so that the cell or treated products thereof are repeatedly used.

A solid high-temperature aerobic fermentation reaction system includes a solid high-temperature aerobic fermentation system, a boiler system, an odor and flue gas treatment system, and a test and control system. The solid high-temperature aerobic fermentation system includes 1 to X solid high-temperature aerobic fermentation reactors. Each solid high-temperature aerobic fermentation reactor includes an inclined horizontal drum, a feed side sealing cover labyrinth sealing device, discharge side sealing cover labyrinth sealing device, a power supporting wheel set, a stirring and anti-sticking device and an integrated base. A water jacket is arranged outside the horizontal drum. The stirring and anti-sticking device is positioned in the horizontal drum which is disposed on the power supporting wheel set. The boiler system includes a shot water boiler, a circulating water pump, a three-way electric regulation valve and an electromagnetic valve.

Sulfonated styrene polymer and/or its salt, a waste water treatment material and sludge dehydrating agent each containing the sulfonated styrene polymer and/or its salt as an effective component thereof are disclosed. The waste water treatment material is used such that sulfonated styrene polymer and/or its salt, which has viscosity of 10 mPa·S to 20,000 mPa·S at 25° C. after 0.01 N to 5 N neutral salt has been added to 1 wt % water solution of the sulfonated styrene polymer and/or its salt, is added to each waste water so that waste water is purified. When a sludge dehydrating agent is required, sulfonated styrene polymer and/or its salt having a weight average molecular weight of 1,100,000 or greater is combined with a cation polymer flocculating agent or an inorganic flocculating agent.

A filter cartridge comprises a filter medium including a plurality of layers of a spunbond nonwoven fabric of continuous filaments. The filter medium may also include one or more additional layers such as a thermal or resin bonded carded nonwoven fabric, a hydroentangled nonwoven fabric or a fabric formed from caustic cotton fibers. The filter medium is formed into a pleated configuration. The filter medium may suitably comprise from 2 to 15 layers of the nonwoven fabric that are bonded to one another to form a relatively stiff multi-layer structure. The overall thickness of the filter medium is preferably from 0.25 to 3 mm.

A material, and filters and other structures exposed to flowing gas that have the material therein, which removes VOCs, such as formaldehyde, from the gas. The material is a porous sorbent impregnated by a metal oxide, such as manganese oxide (MnOx) nano particles. The sorbent may be activated carbon, and the manganese oxide may catalyze formaldehyde to water and carbon dioxide while the carbon may adsorb formaldehyde, both mechanisms of which remove the VOC from the air to prevent or reduce inhalation of the same by humans. The material may be combined with an untreated sorbent or sorbent treated with ionic alkaline salts.