47 results about "Semipermeable membranes" patented technology

The utility model relates to energy equipment technical field discloses a kind of dynamic ice systems of ice blocking prevention and maintaining outlet temperature, including ice storage tank, ice storage tank inner wall is sequentially fixedly connected with ice slurry conveying branch pipe, stirring rod, semi-permeable membrane from top to bottom, the top of the ice slurry conveying branch pipe is fixedly connected with multiple ice slurry conveying spout, ice storage tank one side inside is fixedly connected with gas pipe, the one end of gas pipe is fixedly connected with air pump, air pump is located the outer side wall of ice storage tank, air pump outer wall is fixedly connected with air suction pipe and transmission shaft, the one side electric connection of air pump has monitoring line one, the one end electric connection of monitoring line one has monitoring device.In the utility model, ice crystal and water are completely separated by semi-permeable membrane, fine ice crystals entering the inlet of subcooling plate exchanger can be filtered out during ice storage, ice blocking in the plate exchanger is avoided, ice crystal filter is saved, the size of dynamic ice maker can be reduced, and the effects of preventing ice blocking and maintaining outlet temperature are achieved.

One embodiment of the present invention relates to a composite semi-permeable membrane comprising: a porous support layer; a separation function layer that is provided on the porous support layer and that contains a polyamide; and a coating layer provided on the separation function layer. The coating layer contains a copolymer of a hydrophilic unit having a hydrogen bond acceptor with a polarization degree of from 0.70 e to 1.00 e.

This invention relates to the field of drilling and completion fluid semi-permeable membrane testing technology, specifically a drilling and completion fluid semi-permeable membrane testing device. The device includes a base plate, a vertical plate fixedly connected to the top surface of the base plate, an upstream chamber fixedly connected to the front surface of the vertical plate via a connecting plate, a downstream chamber and an injection cylinder fixedly connected to the top surface of the base plate, and a core holding chamber integrally connected to the top surface of the downstream chamber. The inner bottom surface of the core holding chamber has a through hole. This drilling and completion fluid semi-permeable membrane testing device provides active fixation and circumferential sealing of the core, preventing fluid migration or core displacement under high pressure. It also simulates the high-temperature and high-pressure environment downhole, improving the accuracy of drilling and completion fluid semi-permeable membrane testing.

The present invention relates to a reverse osmosis water device (1), comprising a circuit supplied from an inlet (2) to an outlet (3) located at a downstream portion of said circuit, a pressurization zone (4) connected to said inlet (2), a downstream filtration zone (6) provided with at least two semi-permeable membranes (60), delivering filtered water, and connected downstream of said filtration zone (6), an unfiltered water discharge outlet (9), with a discharge valve (9a) having a perforated wall, so as to, in the closed position of said discharge valve (90), on the one hand, ensure continuous water circulation through said discharge outlet (9), and on the other hand, maintain a minimum pressure within said circuit. The invention also relates to a corresponding reverse osmosis process and a method for maintaining said reverse osmosis device. Figure for the summary: Fig. 2

The utility model relates to a kind of saline-alkali soil rainwater slow-release salt-blocking irrigation device device. The device includes rainwater collection module, salt-blocking module, irrigation module, control module and power module. Rainwater collection module filters rainwater using primary mechanical filter screen and secondary activated carbon filter screen, and prevents clogging and overflow loss through water level sensor at the bottom of water storage tank and overflow protection circuit at the top. Salt-blocking module combines semi-permeable membrane salt-blocking bag and micro-metering pump, dynamically injects salt-blocking liquid, and cooperates with STM32 microcontroller to analyze soil salinity data in real time. Irrigation module uses distributed drip irrigation pipe network and pressure-compensating dripper, and realizes accurate irrigation through duty cycle adjustment of solenoid valve. Power module integrates photovoltaic energy storage system and low-power LoRa communication module, ensuring stable operation of the system in harsh environments.

This invention discloses a synergistic hydraulic permeability enhancement and semi-permeable membrane-enhanced gas extraction system and method, belonging to the field of low-permeability coal seam gas extraction technology. The system comprises a dual-casing structure, hydraulic permeability enhancement drive, semi-permeable membrane negative pressure gradient extraction, and recovery circulation systems. The dual-casing structure mainly consists of a main water injection pipe and multiple outer casings, a main extraction pipe and multiple inner casings. The outer casings are equipped with jet nozzles, and the inner casings have gas extraction holes covered by a polytetrafluoroethylene (PTFE) semi-permeable membrane. The dual-casing structure system combines permeability enhancement and extraction functions. Precise hydraulic permeability enhancement is achieved through the outer casings, while the inner casings utilize the selective permeability characteristics of the semi-permeable membrane to enhance gas extraction, thus solving the problems of short permeability enhancement efficiency, low extraction efficiency, and poor sealing performance in traditional technologies. This invention is suitable for efficient gas extraction and coal seam permeability enhancement in high-stress, low-permeability coal seams, ensuring safe coal mine production and improving coalbed methane resource utilization.

A device (1) for supporting bone tissue growth at a bone defect comprises a deformable semipermeable pouch (10) made of a bioabsorbable material and bone graft granules (40) enclosed by the deformable semipermeable pouch (10). The bone graft granules (40) comprise a calcium salt. The deformable semipermeable pouch (10) comprises at least one through hole (20, 22, 24, 26) arranged and dimensioned for reception of a fastening screw (50) configured to screw into a bone and attach the deformable semipermeable pouch (10) at the bone.

The present invention relates to hollow fibers and processes for the production of hollow fibers. The present invention also relates to carbon capture using the hollow fibers. In one aspect, we describe a HF for capturing carbon dioxide. The HF comprises a hollow fiber structure capable of carbon dioxide capture; and a semi-permeable layer coating an inside of a lumen disposed within the hollow fiber structure. We also describe a process for manufacturing a HF for capturing carbon dioxide. The process comprises extruding a dope mixture through a spinneret to form a hollow fiber structure; and coating an inside of a lumen of the hollow fiber structure with a semi-permeable layer. The semi-permeable layer comprises a material that is impermeable to a liquid heat transfer medium but permeable to a vapor state of the heat flow transfer medium.

The application discloses a kind of peep-proof structure and display device, the peep-proof structure includes oppositely arranged first substrate and second substrate, and a plurality of light-transmitting units and a plurality of peep-proof units are arranged between the first substrate and the second substrate, the peep-proof unit includes retaining wall, flexible semi-permeable membrane, colorant, electrochemical reaction solute, low ion concentration transparent solution, first electrode and second electrode, flexible semi-permeable membrane divides peep-proof cavity into first cavity and second cavity, flexible semi-permeable membrane only allows solvent molecule to permeate, when first electrode and second electrode provide first electric field, electrochemical reaction solute occurs first reaction, and ion concentration in first cavity increases;When first electrode and second electrode provide second electric field, electrochemical reaction solute occurs second reaction, and ion concentration in first cavity decreases.By the above design, flexible switching between peep-proof mode and non-peep-proof mode can be realized.

The present invention relates to a composite semipermeable membrane comprising a support membrane, a separation functional layer that is provided on the support membrane and that contains a crosslinked aromatic polyamide, and a coating layer that is provided on the separation functional layer, wherein, in a surface analysis on the coating layer side by time-of-flight secondary ion mass spectrometry, if A is the number of peak counts detected as C6H3 +, and Bx is the number of peak counts detected as Cx+1H2x+2NO+ (where x is an integer from 3 to 11), at least one x satisfies formula (1).　Formula (1) … 0.025≤Bx / A≤6.0

The utility model relates to lithium sulfate production technical field, and disclose a kind of solid-liquid separation device for lithium sulfate production, the device includes base and shell, base is annular and is provided with rotating groove in middle part;Shell is rotatably connected to the one end outside of base;Rotatably connected with separation assembly in shell interior, one end of shell near base is provided with rotary liquid inlet component, spiral vane is fixedly connected in shell interior, spiral vane continuously extends from one end of shell to its other end, separation assembly is provided with reverse osmosis cleaning assembly for cleaning separation assembly in interior.The device is sent into shell interior by rotary liquid inlet component with lithium sulfate solution, solid-liquid separation is carried out using hard metal mesh tube and filter cloth in separation assembly, and continuous efficient separation process is realized by spiral vane and gear disc drive, meanwhile, reverse osmosis cleaning assembly is equipped to prevent the blockage of filter cloth and semi-permeable membrane, ensure the automation and high efficiency of lithium sulfate production.

A food waste harmless treatment device includes a housing with a feeding port at the top. A feed guide plate is located below the feeding port, and a reagent kit is inclined at the bottom of the feed guide plate. An automatic switching mechanism is located at the opening of the reagent kit. Inside the housing, from top to bottom, are a crushing mechanism, a dehydration mechanism, and an oil-water separation mechanism. A first collection box is fixedly installed inside the housing. The dehydration mechanism has a liquid outlet and a fixed outlet. A second collection box is located below the solid outlet of the dehydration mechanism. The oil-water separation mechanism includes a first pipe and a second pipe for discharging. Valves are installed at the inlet ends of both the first and second pipes. A semi-permeable membrane is installed at the inlet end of the first pipe before the valve. The purpose of this invention is to provide a food waste harmless treatment device capable of automatically adding microbial deodorizing agents to prevent odorous gases from leaking from the feeding port.

The application belongs to the technical field of water treatment, and particularly discloses an acid recovery device. The acid recovery device comprises an acid separator and acid concentration electrodialysis. The acid separator is sequentially arranged and placed by a positive charge microporous semi-permeable membrane, a negative charge fibrous filler, a positive charge microporous semi-permeable membrane, a raw material chamber separation net and a positive charge microporous semi-permeable membrane. The components arranged in this way can be arranged in multiple ways to realize more efficient treatment. Dilute acid from the acid separator enters the acid concentration electrodialysis component for treatment. The acid recovery device has the advantages of fast diffusion speed, high salt concentration of waste acid, the ability to treat waste acid with high salt concentration, high recovery rate and the like.

A continuous membrane-covered aerobic fermentation system and an application method thereof are disclosed. The system comprises: a fermentation trough which is formed by underground walls of trough, above-ground walls of trough, and a trough bottom; a membrane changing machine configured for performing membrane uncovering, membrane laying, or membrane changing treatments on a semipermeable membrane covered on the fermentation trough and materials in the trough; a pile turning machine configured for direct turning and further mixing the materials under the membrane without uncovering the membrane, and gradually shifting and conveying the materials to another fixed position; and a condensate collecting system configured for continuously collecting the condensate on a inner surface of the semipermeable membrane in real time and guiding out the condensate.

Membrane electrode assembly (4) for use in an electrochemical cell (1), comprising a semipermeable membrane (10), a catalytically active layer (12), and a porous transport layer (13), wherein the catalytically active layer (12) is arranged between the porous transport layer (13) and the membrane (10). A hydrogen-oxidizing catalyst layer (11) is arranged between the membrane (10) and the catalytically active layer (12). An electrochemical cell (1) according to the invention has two chemical reaction chambers (3; 4) and such a membrane electrode assembly (4).

The embodiment of the present disclosure provides a large-flow permeation tube water removal system and method containing water vapor correction. It is applied to the technical field of gas analysis, and comprises a sampling device, a sample gas treatment device containing a semi-permeable membrane and a water vapor correction equation test device connected in sequence. In this way, the present application can take into account large-flow sampling and ultra-low dew point water removal, and significantly improve the accuracy of greenhouse gas monitoring, system stability and field deployment adaptability.

The present disclosure relates to semipermeable membranes comprising a base membrane and a coating with a vinyl polymer derived from vinyl monomers carrying an acid group and grafted onto the surface of the base membrane by radiation induced graft copolymerization (RIGC), thereby introducing a coating carrying negative charges. The coated membranes are especially suitable for blood purification applications as they are characterized by an increased selectivity and excellent blood compatibility and an excellent hemocompatibility due to the careful selection of the vinyl monomers used for the coating process and the introduction of negative charges. The invention also relates to a production process for said coated membranes and to their use in hemodialysis devices and in medical applications such as extracorporeal blood purification.

This invention generally relates to sensor devices and methods for detecting analytes. More specifically, but not exclusively, the invention relates to a sensor device comprising a carrier liquid comprising at least one protein capable of binding an analyte; a semi-permeable membrane; and a sensing component; wherein the sensor device is configured to intermittently transport carrier liquid from the semi-permeable membrane to the sensing component. The invention also relates to methods of detecting an analyte within a gas.

This invention discloses an antibiotic patch and its application. The antibiotic patch includes a transdermal microneedle module, an antibiotic reservoir layer, and an osmotic pressure driving module, with the reservoir layer and the driving module separated by an elastic membrane. The osmotic pressure driving module includes a water chamber, a propulsion layer, and an osmotic pressure active sheet. It generates a constant thrust through unidirectional permeation of the semi-permeable membrane, propelling the antibiotic through the hollow microneedles for transdermal infusion and achieving zero-level release. The independent antibiotic reservoir layer can hold large doses of antibiotics, and it is also equipped with a filling port and a venting port to ensure flexible and stable medication administration. The antibiotic patch is suitable for various scenarios, including home and outdoor use, and can reduce the risk of antibiotic resistance and side effects, providing a convenient and efficient new solution for the treatment of bacterial infections.

A system and method are provided for solvent extraction using a semi-permeable membrane, chelating bioinhibitors from fermentation broth containing bioinhibitors via more than one tubular membrane module arranged in a cascade sequence, wherein tubular-side material, preferably flowing countercurrently to a corresponding material flowing on the shell side of the module, is cascaded from one module in the sequence to the next using gravity as the driving force, and the shell-side material is pumped along the exterior of the tubular membrane contained in each module. A tube-in-tube mixing vessel is associated with each module to realize a recycling loop for a portion of the tubular-side material, and another portion is cascaded forward to the next module in series.

The utility model discloses a novel selective treatment collection seawater and depth desalination and hydrogen evolution oxygen evolution device, including reverse osmosis device subassembly, hydraulic turbine subassembly, electrolytic cell depth desalination subassembly. Reverse osmosis subassembly mainly comprises high pressure pump, semi-permeable membrane, fluid pipeline, device shell and hydraulic turbine. The electrolytic cell depth desalination subassembly mainly comprises device shell, graphene cathode and anode sheet, divalent anion membrane, one -way selective anion membrane, one -way selective cation membrane, baffle and fluid guide pipe. The utility model is based on reverse osmosis principle and electrolytic cell principle, realizes device multifunction, and integrates seawater depth desalination, salt recovery and clean energy cogeneration as a whole, and purifies seawater deeply.

A lid for an electrochemical cell has at least one through-opening connecting a headspace of the cell with an external environment when the lid covers the cell. The at least one through-opening is blocked by at least one hydrophobic, non-electrolyte-absorbing semi-permeable membrane. The semi-permeable membrane is substantially impermeable to electrolyte (e.g., potassium hydroxide) mist while permitting diffusion of hydrogen gas and air therethrough. The semi-permeable membrane has a total permeable surface area in a range of 1-15% of a total surface area of the lid between the headspace of the cell and the external environment. Gases diffuse through the semi-permeable membrane at a rate to maintain a total pressure in the headspace greater than ambient air pressure in the external environment and less than about 0.5 kPa above the ambient air pressure in the external environment. The lid mitigates electrolyte mist venting from and H2 gas accumulation in the cell.

The present invention provides a composite semipermeable membrane comprising a porous support layer and a separation functional layer located on the porous support layer, the composite semipermeable membrane having a first surface that is a surface positioned on the separation functional layer side and a second surface that is a surface positioned on the opposite side to the first surface, in which the separation functional layer contains a crosslinked polyamide, and the amino group density measured with a scanning transmission electron microscope (STEM) in a cross section taken in the thickness direction of the separation functional layer satisfies the formula: Nb / Nd ≤ 0.40 (wherein Nb and Nd are defined in the description).

The present application relates to a kind of ion chromatography, mass spectrometer calibration device for combination, be arranged between suppressor outlet and mass spectrometer ion source entrance.The device includes the main body by inner core and shell, and annular sample cavity of containing calibration fluid is enclosed between the two.The inner core is internally provided with sample main flow channel, and its contraction part, throat and diffusion part constitute venturi structure;Throat is provided with the permeation window covered by semi-permeable membrane.The first electrode and the second electrode are respectively arranged on the inside and outside of semi-permeable membrane.Controller controls electrode to establish positive electric field when calibration, accelerates sample ion to pass through semi-permeable membrane and enter main flow channel;Reverse pulse electric field is established when calibration ends, and residual components on semi-permeable membrane are sucked back into annular sample cavity.Using venturi fluid dynamic pressure and electrode drive coupling, the precise addition of internal standard substance is realized without mechanical pulse, and phase lag and memory effect are completely eliminated, and the stability of system detection is significantly improved.

The presently disclosed subject matter relates generally to the production of a desalinated, filtrated or other way treated water simultaneously with generation of renewal energy source, in particular hydrogen, using osmotic and / or gauge pressure driven filtration processes and systems. The co-generation of hydrogen from water produced during pressure driven water desalination / filtration processes, such as reverse osmosis, forward osmosis, pressure retarded osmosis or ultrafiltration. A small part of feed, raw saline solution and / or permeate involved in a desalination / filtration processes is subjected to electrolysis thereby splitting the water to produce hydrogen. This is achieved by the provision of novel RO type semi-permeable membranes and UF type membrane that incorporate electrodes within the membrane to allow splitting of the water via electrolysis.

A processing technique for amniotic fluid (AF) described herein is designed to maximize the retention of bioactive components while ensuring efficient decellularization and long-term preservation. The method integrates ultrafiltration, osmotic disruption, and cryopreservation in a streamlined workflow. Key steps involve the sequential use of semi-permeable membranes to enhance filtration efficiency, along with precise centrifugation to ensure thorough cell removal.

The present invention relates to a composite semipermeable membrane comprising a porous support layer, a separation function layer provided on the porous support layer, and a coating layer provided on the separation function layer, wherein: the separation function layer contains a crosslinked polyamide as a main component; the coating layer contains a polymer having a hydrogen bond acceptor; and the interaction energy between the polymer and the crosslinked polyamide is −700 cal / mol / atom to −400 cal / mol / atom.