61results about How to "Increase membrane area" patented technology

A system, method and device are disclosed for bio-processing a feed stream and providing a constant output by operating a continuous single-pass tangential-flow process. The single-pass process provides high conversion concentration while operating at relatively low feed flow rates, and the process can also be used to provide constant output diafiltration.

A method and a device to increase the efficiency of dialysis for the removal from blood of substances that are more or less tightly bound to carriers such as albumin. According to the invention this is accomplished by a simultaneous significant increase of the flow rate of the dialysis fluid and of the area of the membrane that separates the blood from the dialysis fluid, compared to conventional dialysis.

A water-repellent microphone and an improved method for constructing such a water-repellent microphone provides easy assembly and good acoustic performance. In one embodiment, a water-repellent membrane and a washer are pre-assembled. The surface of the washer opposite the membrane is covered by an adhesive, and the adhesive is covered by a removable liner. The method of assembly comprises removing the liner, and pressing the membrane and washer over the sound port of the microphone. The washer provides spacing between the microphone and the membrane and increases the membrane area through which sound passes, thus providing good acoustic performance. In a second embodiment, the washer is provided as a separate element with adhesives and liners on both sides. A first liner is removed and the washer is attached to the membrane or the microphone, and then the second liner is removed and the assembly is completed.

Filtration device suited for concentration of liquid samples, particularly biomolecules, and a method of concentrating, desalting, purifying and / or fractionating liquid samples. In certain embodiments the device includes a housing having a sample reservoir, and two substantially vertically oriented and spaced apart membranes disposed in the housing. An underdrain is associated with each membrane such that fluid passing through each membrane flows through a respective underdrain into a filtrate collection chamber. The fluid that does not pass through the membrane is collected in the retentate collection chamber, and can be recovered such as by a reverse spinning step, achieving recoveries greater than about 90%. The substantially vertical orientation of the membranes increases the available membrane area by at least 2.7 times the area available in a conventional filter device. The two-panel configuration also maintains more available membrane area in use during the last stages of filtration than a one-panel configuration.

The present invention provides a hollow fiber membrane module comprising hollow fiber membrane element or elements in a pressure vessel, in which a feed fluid can be supplied to a feed fluid distribution pipe disposed at a center portion of each hollow fiber membrane element, the pressure vessel having at least two feed fluid passage nozzles on the outer peripheral side in the vicinity of one end and at least two concentrated fluid passage nozzles on the outer peripheral side in the vicinity of the other end; and a hollow fiber membrane module arrangement group that comprises such hollow fiber membrane modules and substantially eliminates need for header pipes at the supply side and the concentration side.

A seal ring holder for membrane elements which is capable of attaining an increase in the area of membranes packed per element; and a membrane element using the seal ring holder, are provided. The seal ring holder for membrane elements which is disposed at an end part of a spiral wound membrane element to hold a ring seal ring on the outer periphery thereof while allowing a raw liquid to flow into a membrane end part of the membrane element, includes: a first ring part which has a side wall facing an upstream-side membrane end part of the membrane element and is inserted into an end part of a sheathing member of the membrane element; a projecting ring part which has been formed upstream from the first ring part and has side walls respectively on both sides, an edge face of the sheathing member and the downstream-side edge face of the seal ring being fixable respectively to the side walls; a second ring part which is formed upstream from the projecting ring part and to the outer periphery of which the seal ring is to be fitted; and a third ring part which is formed upstream from the second ring part and to which the upstream-side end face of the seal ring is fixable.

An object of the present invention is to provide a polysulfone hemodialyzer with large membrane area that exhibits an unprecedented high dialytic performance over a wide molecular weight range from urea to β2-microglobulin. There is provided a polysulfone hemodialyzer having a membrane area of >2.4 but ≦3.2 m2 and a dialysate rectifying portion with specified broadening at end portion of bundle, the polysulfone hemodialyzer achieves the above object.

The invention discloses a mass spectrum rapid enrichment-thermal analysis membrane sample introduction apparatus and an application. The apparatus comprises an enclosed cavity, and a heating wire whose outer surface is sleeved by a tubular enrichment membrane passes through the center of the cavity; a sample inlet and a sample outlet are arranged on the wall of the cavity, the sample inlet is connected with a sample pool through a sample induction pipe, the sample outlet is connected with a tail gas pipe or a waste liquid pool through a sample discharge pipe, and a sampling device is arranged on the sample introduction pipe or the sample discharge pipe; the wall of the cavity is provided with a sweeping gas inlet and a sweeping gas outlet, the sweeping gas inlet is designed in a tee structure, one end communicates with an external gas source, one end is empty, and the other end is directly connected with the wall of the cavity; the enclosed cavity is connected with a sample introduction capillary of a mass spectrometer through a valve; and the sweeping gas outlet is connected with the tail gas pipe or the waste liquid pool through the sample discharge pipe. The apparatus provided by the invention is combined with a mass spectrometer for application, sample preprocessing is unnecessary, and the apparatus is suitable for quasi online mass spectrometry of semi-volatile organic compounds (SVOCs) in an environment.

The invention discloses a polyacrylonitrile membrane with supporting materials and a preparation method thereof. The preparation method is characterized by comprising the following steps: taking calcium nitrate or lithium nitrate as an oxidant, polyethylene glycol or polyvinylpyrrolidone as a pore-forming agent and one or two of N,N-dimethylacetamide and N,N-dimethylformamide to prepare a polyacrylonitrile hollow fibrous membrane by a dry-wet method, ensuring monofilaments to enter into a spinneret via other inlets and carrying out blending to prepare the polyacrylonitrile hollow fibrous composite membrane with the supporting materials, wherein the monofilament fibrous materials are polyester, spandex, nylon 6, nylon 66 or polyurethane and have diameter of 0.01-2mm. The membrane and the preparation method have the following beneficial effects: the defect that the hollow fibrous membranes without supports have insufficient physical tensile strength and are easy to suffer from filament break is overcome; the physical tensile strength of the membrane disclosed by the invention is improved by more than several times compared with that of the hollow fibrous membranes without supports; support and membrane stripping can be avoided; the water flux and manufacturing cost of the membrane disclosed by the invention are equivalent to the water flux and manufacturing cost of the hollow fibers without supports; and the membrane can replace the existing hollow fiber products and has great economic and social benefits.

The invention relates to a hydrogen separating high-efficiency gear type hydrogen palladium or palladium alloy film and a hydrogen separator based on the film. A gear type porous ceramic is used as a substrate, and a palladium or palladium alloy film is formed on the substrate by a chemical plating or chemical plating and electroplating combined method; and in the hydrogen separator, the two ends of the film are sealed by graphite pads according to a clamping and sleeving method. The film can provide a larger film area, so that the hydrogen separator is more efficient and compact.

The invention relates to a membrane distillation desalination separating technology by employing a multichannel ceramic membrane. By using an organic matter surface grafted modification method, the hydrophilic-hydrophobic property on the surface of the multichannel ceramic membrane is regulated and controlled, and the ceramic membrane with good hydrophobicity is prepared. The modified ceramic membrane is used for a desalination process of the membrane distillation, water molecules in the raw material liquid permeate the membrane holes as a steam form, wherein, substances such as inorganic salt and macro-molecules are intercepted, so that the separating and purifying effects are achieved, the treating capacity of the multichannel ceramic membrane is obviously higher than that in the membrane distillation process of the common organic membrane material, and the desalination rate is more than 99.9%. During the membrane distillation desalination process, the usage of the multichannel ceramic membrane material provides high mechanical strength and chemical stability as well as develops an application of the hydrophobic membrane material in the field.

Disclosed are a nanofiltration composite hollow fiber membrane and a method of manufacturing the same. The nanofiltration composite hollow fiber membrane includes a reinforcement (1) which is a tubular braid, a polymeric resin thin film (2) coated on the outer surface of the reinforcement (1), and a polyamide active layer (3) formed on the outer surface of the polymeric resin thin film. The present invention has an advantage of an excellent strength and an increase in membrane area relative to an installation area.

The invention discloses a purifying method of condensed water. The purifying method comprises the steps of adopting a honeycomb-shaped carrier type inorganic carbon membrane assembly to carry out at least one stage of membrane filtering treatment on high-temperature condensed water, wherein the filtering accuracy of the membrane assembly treated by membrane filtering is 0.001-100mum, and preparing the boiler supplementing water suitable for recycling. The purifying method disclosed by the invention has the advantages that the filtering accuracy is high, the membrane flux of a honeycomb-shaped carrier type membrane core is large, the impact resistance of incoming water is strong, the resistance to oil pollution is strong, the integration level of the membrane core structure is high, the preparation method is simple, a complex online discrimination system is not needed, and the prepared condensed water is stable in quality and high in temperature, meets the requirement on water quality of the boiler supplementing water and saves a great amount of heat.

The invention discloses a polysulfone hollow fibrous membrane with supporting materials and a preparation method thereof. The polysulfone hollow fibrous composite membrane with the supporting materials is prepared a method comprising the following steps: preparing the polysulfone hollow fibrous membrane by a dry-wet method by taking Tween 20 or polyethylene glycol as an additive and N,N-dimethylacetamide or N-methylpyrrolidone as a solvent, ensuring monofilaments to enter into a spinneret from other inlets and blending the polysulfone hollow fibrous membrane with the monofilaments, wherein the monofilament fibrous materials are spandex, nylon 6 or polyurethane and have diameter of 0.01-2mm. According to the invention, the defect that the hollow fibrous membranes without supports have insufficient physical tensile strength and are easy to suffer from filament break is overcome; the physical tensile strength of the membrane disclosed by the invention is improved by more than several times compared with that of the hollow fibrous membranes without supports; support and membrane stripping can be avoided; the water flux and manufacturing cost of the membrane disclosed by the invention are equivalent to those of the hollow fibers without supports; and the membrane has technical and economic breakthroughs, can replace the existing hollow fiber products and has great economic and social benefits.

The invention provides a system for fermenting synthesis gas to produce alcohol and processing method thereof. The system comprises a bubble-free gas supply membrane component, a bioreactor and a pervaporation membrane component, wherein the bubble-free gas supply membrane component is placed in or out of the bioreactor, the gas inlet of the bubble-free gas supply membrane component is connected with the synthesis gas; a fermentation liquor outlet of the bioreactor is connected with a feed port of the pervaporation membrane component, a trapped liquor outlet of the pervaporation membrane component is connected with a material inlet of the bioreactor. The system and method provided by the invention improve the gas liquor transmission efficiency, the gas utilization efficiency, the microorganism cell concentration and the product concentration in a mixed gas fermentation process by use of the bubble-free gas supply membrane technology in double-end or single-end gas inlet, and in combination with a fermentation technology in fermentation-pervaporation separation coupling; the material consumption of cell culture is lowered, the cell concentration in the fermentation process is improved, the fermentation efficiency and the product concentration are improved.

The invention discloses a pipe network type garbage leachate processing device. By processing the garbage leachate by virtue of device, the effluent quality of the leachate is stable, the effluent effect is good, meanwhile, and meanwhile, a pipe network type reverse osmosis membrane is convenient to clean and maintain due to high pollution resistance; and besides, the device further has the characteristics of detachability, simplicity in system mounting and maintenance, small floor area of equipment and strong mobility and has very high popularization and application values when being applied to the garbage leachate processing field.

The invention provides a novel reinforced hollow fiber membrane preparation device. The reinforced hollow fiber membrane comprises a braided rope supported at the center, membrane filaments distributed around the support rope and a winding tape binding the braided rope and the membrane filaments into a membrane bundle. The device comprises a feed liquid tank, a core liquid tank, a spinning metering pump, a pay-off rack, a special spinning head, a coagulation bath, a winding tape apparatus, a three-roller traction apparatus, a rinsing tank and a filament roll-up wheel. The beneficial effect ofinvention lies in that the invention provides the device for preparation of the reinforced hollow fiber membrane. The braided rope provides the tensile strength of the whole membrane filaments, and the membrane filaments provide the separation performance of the whole membrane bundle. Compared with the membrane filament of traditional outer diameter, the overall membrane bundle obtained by the device can have a larger separation specific surface area. At the same time, the device can prepare the one-time formed membrane bundle, and has the advantages of simple operation and high production efficiency.

The invention provides a method for preventing and controlling balsam pear drosophila melanogaster by using a photosynthetic high-fat film agent. The photosynthetic high-fat film agent is included, and is prepared from, by weight, 150 parts of a dodecyl alcohol, 150 parts of a cetyl alcohol, 30 parts of a repellent, 8 parts of an emulsifier, 3 parts of a co-emulsifier, 40 parts of a thickener and800 parts of water; after being diluted with water by using the photosynthetic high-fat film agent, balsam pears are sprayed. The method can effectively reduce the invasion of the drosophila melanogaster, the time for the repellent to remain on the balsam pears can achieve a sustained effect, and the effect of preventing the drosophila melanogaster is increased.

The present invention discloses palladium or palladium alloy membrane based on wall-flow honeycomb ceramic, and a preparation method and application thereof. According to the invention, wall-flow honeycomb ceramic is used as a substrate, and a chemical plating manner or a chemical plating and electroplating combination manner is used for depositing palladium or palladium alloy membrane on the substrate. The membrane is efficient hydrogen permeation membrane being suitable for hydrogen separation, and has a high separation area / volume ratio, so that a hydrogen separator becomes relatively compact and efficient.

The invention discloses a spiral-wound membrane element manufacturing method. A spiral-wound membrane element comprises a water collecting tube and at least one membrane bag wound around the periphery of the water collecting tube. The spiral-wound membrane element manufacturing method comprises the steps that S10, a thin membrane sheet for forming the membrane bag is welded on the water collecting tube; S20, the thin membrane sheet for forming the membrane bag is welded together along a side boundary to form a single membrane bag; S30, at least one membrane bag is wound around the water collecting tube. By adopting the spiral-wound membrane element manufacturing method, the membrane bag side boundary width of flat sheet membrane spiral-wound membrane elements such as a reverse osmosis membrane, a nanofiltration membrane and an ultrafiltration membrane can be accurately controlled, accordingly effective membrane area is larger, meanwhile membrane bag side boundary bonding can be completed within a short time, and a production period can be shortened.

The invention provides a high-temperature-condensed-water oil removing technology. The high-temperature-condensed-water oil removing technology comprises a carrier-type membrane assembly filtering stage and an active carbon filter oil removing stage and includes the specific following steps that 1, high-temperature condensed water is injected into a carrier-type membrane assembly from a raw water tank through a circulating pump; 2, the carrier-type membrane assembly filtering stage is carried out in a cross flow filtration mode, wherein the membrane face flow speed is 0.1 m / s to 5 m / s, the transmembrane pressure difference is 0.01 MPa to 0.3 MPa, the filtering accuracy of the membrane assembly is 0.001 micron to 100 microns, and the recirculation ratio is 80% to 99%; 3, the active carbon filter oil removing stage is carried out in a dead-end filtration mode, wherein the filtering speed is 3 m / s to 5 m / s. Compared with the existing high-temperature-condensed-water oil removing technology, the high-temperature-condensed-water oil removing technology has the advantages that cost is low, oil removing efficiency is high, and produced water meets the requirement for boiler feedwater and stable in quality.

The present invention provides, in various embodiments, hybrid single-pass tangential flow filtration assemblies, disposable single-pass tangential flow filtration assemblies, scalable single-pass tangential flow filtration assemblies and adaptable modular single-pass tangential flow filtration assemblies. In other embodiments, the invention relates to processes for recovering proteins from the surface of a filtration membrane in a single-pass tangential flow filtration assembly and for cleaning a tangential flow filtration assembly. In additional embodiments, the invention provides methods of increasing the processing capacity of a single-pass tangential flow filtration assembly.

The invention discloses an indirect contact co-culture system capable of realizing engineering and large-scale amplification as well as a preparation method thereof. The system consists of a bioreactor capable of containing numerous tiny unit particles. The tiny unit particles are spherical hydrogel carriers with the particle size of 100 to 1000 microns, and the surface of each hydrogel ball has one layer of hydrogel membrane structure. One kind of cells are in the spherical hydrogel, the other kind of cells are distributed on the surface of the spherical hydrogel membrane, the two kinds of cells are formed and can cause cell membrane contact through the membrane pores of the hydrogel membrane, and the cells which are separated at downstream can be in direct contact with a co-culture unitconveniently.