50 results about "Electrofiltration" patented technology

The invention discloses a method and device for dry-type medium- and high-temperature grading electrofiltration dust removal of carbon thermal reduction furnace flue gas. According to the method and device, the carbon thermal reduction furnace flue gas is introduced into a charging region under a sealed condition with oxygen content lower than 5 percent; a negative electrode is arranged in the charge region, and a high-temperature electric heating and electric filtering coupling assembly is used as a positive electrode and is adopted as a dust collecting electrode at the same time; under the action of direct current, alternating current or pulse high-voltage voltage, the charging region charges particulate matters in the flue gas; the charged particulate matters can be effectively removedunder the action of electric field force and micropore physical resistance; the high-temperature electric heating and electric filtering coupling assembly can generate high temperature under the action of current to heat the flue gas, so that the condensation of the carbon thermal reduction furnace flue gas is prevented, and the phenomenon that a pipeline is blocked due to the condensation of partof the carbon thermal reduction furnace flue gas such as yellow phosphorus flue gas is effectively avoided. With the method and device of the invention adopted, the high-efficiency removal efficiencyof the particulate matters in the medium-high temperature carbon thermal reduction furnace industrial waste gas is improved to a great extent.

The invention relates to a high gas speed and high efficiency wet-type electrofiltration device for deep treatment of PM2.5, which mainly comprises a main shell and an electrode separation device arranged in the main shell, wherein a lower air chamber is arranged at the lower part of the main shell and an upper air chamber is arranged at the upper part of the main shell; an exhaust inlet and a pollution discharge port are formed in the lower air chamber; a gas distribution device is arranged at the connecting part of the lower air chamber and the main shell; an exhaust port is arranged at the top of the upper air chamber; the electrode separation device comprises a cathode device, an anode device and a power supply device; the anode device is honeycomb-shaped conductive composites tube bundle; the cathode device comprises a cathode connecting board positioned in the upper gas chamber and a plurality of cathode wires hung on the cathode connecting board; cathode wires penetrate the honeycomb-shaped conductive composites tube bundle in one-to-one correspondence; a heavy hammer is connected with the lower end of each wire. The high gas speed and high efficiency wet-type electrofiltration device has good collection effects to tiny / viscous / high resistance ratio PM2.5 particulates, aerosol, tiny metal particles, dioxin and the like.

The invention relates to a system and method for realizing the high-efficiency removal of fine particles in high-temperature gas through electrofiltration coupling. The system comprises an intelligentcontrol device, a filter body, a discharge dust removal device, a filtering dust removal device, a rectifying device, a tubular ash removal device, a vibrating ash removal device, a hot air device and an ash conveying device; the intelligent control device collects, processes and feeds back all real-time monitoring data of the whole system. According to the system and method of the invention, anelectrofiltration coupled high-temperature flue gas dust removal system formed by combining the three devices, namely, the intelligent control device, the discharge dust removal device and the filtering dust removal device, the rectifying device and the tubular ash removal device are adopted; the advantages of each device technology are fully utilized; the restriction of flue gas conditions (temperature, components, physicochemical properties and the like) and smoke dust conditions on the dust removal performance of the dust removal device is effectively solved; the operation parameters of thehigh-temperature dust removal system are adjusted in real time by intelligently optimizing and regulating a key parameter model; and the purposes of energy conservation, consumption reduction and emission reduction are achieved.

The invention relates to a membrane electrode used for an ozone / electrical filtration coupled water treatment system as well as a preparation method and application of the membrane electrode. The membrane electrode includes a substrate filter membrane and an electro-conductive catalytic component, the substrate filter membrane is an electrode bottom layer, and the surface of the substrate filter membrane is loaded with the electro-conductive catalytic component; and the electro-conductive catalytic component is aimed at the ozone / electrical filtration coupled system, and can improve the filtering performance of the substrate filter membrane and realize a synergistic reaction between ozone and electrochemical oxidation. The invention also provides the preparation method of the electrode. Electrochemistry / ozone coupled advanced oxidation and a membrane filtration technology are combined through a certain process, so that complementation and mutual promotion of the processes in a same reaction device are realized, the treatment efficiency is significantly improved, membrane pollution is suppressed, and efficient water treatment is realized.

Methods and apparatus for use in a water treatment system to separate charged compositions from the water stream are provided. An electric filtration cell may include a fluid passageway, a filtration membrane, and a first and second electrode, configured to provide an oscillating electric field across the filtration membrane to separate charged compositions on a first side of the membrane. A water treatment system may be provided to separate charged compositions from a water stream. The water treatment system may include an electromagnetic field (EMF) device to generate an electromagnetic field within a passageway. The water treatment system may further include a filtration membrane and a first electrode and a second electrode, configured to provide an oscillating electric field across the filtration membrane to separate charged compositions. In one embodiment, the system is configured to separate struvite and / or vivianite on a first side of the membrane. In another embodiment, the system is configured to separate salt on a first side of the membrane.

A distillation tower is disclosed. A tower body comprises a bottom rectification layer (1), a top cooling layer (2), and more than one tower sections (3) stacked between the bottom rectification layer and the top cooling layer. Each tower section (3) is provided with a feeding port. A condenser (4) is disposed in the top cooling layer (2). An outlet end of the condenser (4) is connected to a discharging pipe (5). The bottom rectification layer (1) comprises an inner drum (6) and an outer drum (7), wherein the inner drum (6) is used for containing distillation liquid; and conductive oil is disposed between the inner drum (6) and the outer drum (7). A heating rod penetrates the outer drum (7), sticks into the conductive oil, and is used for heating the conductive oil. The bottom rectification layer (1) is provided with a hollow heating interlayer, and a high-temperature resistant film (8) is adhered to the inner wall of the bottom of a tank. The distillation tower is small in occupied space, low in cost, power-saving, and good in filtration effects. The distillation liquid is more evenly heated. The distillation tower adopts the conductive oil for heating, so that the distillation tower is large in heating area, low in heat loss, high in temperature controllability and largely improved in safety.

The invention relates to a piezoelectric and / or thermoelectric reinforced electrofiltration long-term double-effect filter material and a manufacturing method thereof. The electrofiltration long-termdouble-effect filter material comprises a filter material base material and a coating attached to the surface of the filter material base material, wherein the coating contains a piezoelectric powdermaterial and / or a thermoelectric powder material. Under the action of wind pressure during normal-temperature gas filtration or under the dual action of heat and wind pressure during hot flue gas filtration, the piezoelectric and / or thermoelectric powder material in the surface coating spontaneously generates static electricity, so that the filter material is changed into a charged material, particles are captured by a fiber filtration mechanism while the electrostatic adsorption efficiency on fine particles is remarkable, the major problems that a conventional filter material is low in efficiency on the fine particles and easy to penetrate at present can be solved, the filtering precision and the trapping efficiency of the filter material on the fine particles are effectively improved, and the filter material is different from a conventional electret material in the aspect of application environment selection. The material becomes a double-effect filter material which can be used fora long time under severe industrial flue gas conditions such as damp heat and corrosion and can permanently generate electricity.

A metal coated polymer membrane, a method for the production thereof, an electrofiltration device or electrosorption device, and a method of electrofiltration and electrosorption using a metal coated polymer membrane. The polymer membrane is coated with metal using Atomic layer deposition (ALD).

The invention discloses a high-voltage electrostatic filter device for virus prevention and control positive pressure biological protective clothing, which is characterized in that it is composed of a fixing belt, a casing, a power supply system, a core filter component, an air supply system, and an integrated control circuit; the casing is equipped with There are gas conduits, the upper gas valve port docking interface, and the grounding wire interface, and each interface is provided with a sealing ring. There are two openings on the left and right sides of the shell, and the air supply system is installed through four openings to maintain the air volume and keep the protective clothing inside. Air pressure, use airtight cushion to compress. The device of the present invention breaks through the traditional principle of physical barrier filtration, and realizes the high-efficiency filtration of fine particles and the inactivation of pathogenic microorganisms with the compound mode of high-voltage electrostatic field, while maintaining ultra-low pressure drop. The filter material of the device of the present invention has a loose structure, which can be repeated after cleaning. In use, the filter material has a long service life and low replacement frequency, and can be connected to the positive pressure protective clothing worn by the workers in the external environment of biological level 3 and above laboratories or high-risk biological pollution.

The invention discloses a system and method for pretreatment of high-protein wastewater. The system comprises an electrofiltration bed and a coagulation sedimentation tank, wherein the electrofiltration bed is connected with a water inlet pipe; a positive electrode plate, a negative electrode plate and a filtering material are arranged in the electrofiltration bed; the positive electrode plate andthe negative electrode plate are connected with a power source; the filtering material is arranged between the positive electrode plate and the negative electrode plate; the electrofiltration bed isconnected with the coagulation sedimentation tank through a communication pipe; the coagulation sedimentation tank is connected with a water outlet pipe; and a metering pump used for adding a flocculant and a pipeline type mixer are arranged on the communication pipe. According to the invention, electrodes and the filtering material are arranged on the electrofiltration bed, and through electrocatalytic oxidation, long-chain protein molecules are decomposed into short-chain protein molecules; and through the action between trace iron ions and protein molecules with negatively-charged surface,electrostatic repulsion force among the protein molecules is reduced, and sedimentation of protein is promoted, so highly-efficient removal of the protein in water is realized, and the COD value of the wastewater is reduced. The system and the method provided by the invention has the following advantages: the cost of equipment is significantly reduced; the amount of an added chemical is reduced; the cost of purification is effectively reduced; and favorable conditions are provided for advanced treatment of protein wastewater.

The invention relates to the technical field of filter dust removers and specifically discloses a long-acting electrified filter material and an electrostatic filter dust remover. The filter materialcomprises at least one of a pure conductive fiber felt, a conductive fiber blended felt, a conductive fiber laminating felt, a conductive coating filter felt, a conductive rib filter felt, a metal netfilter felt and a magnetron sputtering electroplated metal layer filter felt. The long-acting electrified filter material is simple in preparation process and low in gram weight, and the raw materialcost is reduced. Meanwhile, the dust remover is low in operation resistance, large in flux, easy to remove dust, long in service life, convenient to replace and low in operation cost.

The invention relates to a device for purifying a gaseous medium loaded with particles comprising a shell (11) closed at the ends thereof by an end plate (31) protected by a disjoined shell (70), an electrostatic filtration chamber (20) having a passage for the gaseous medium loaded with particles; said chamber (20) comprising an emissive structure (40) comprising serrated plates (42) forming tips(47) directed towards a collecting structure (50) on either side of said emissive structure (40) and designed to trap the particles contained in the gaseous medium; said end plate (31) and said shell(70) are each brought to a different predetermined potential so as to create an electric repulsion field in the vicinity of said end plate (31), directed towards said passage.

The invention provides an integrated water treatment equipment combining a bio-membrane with an electric filter. The integrated water treatment equipment comprises a sewage regulation chamber, a bio-membrane method sewage treatment chamber and an electric filtration treatment chamber, wherein a screen mesh is respectively arranged at a water inlet and a water outlet of the sewage regulation chamber; bio-membrane fillers are laid in the bio-membrane method sewage treatment chamber; an aeration head is laid at the bottom of the bio-membrane method sewage treatment chamber; multiple sets of electric filtration devices arranged in parallel are arranged in the electric filtration treatment chamber; an inclined flow mud fender is arranged at the water inlet of each set of the electric filtration device; a micron reticulated ruthenium titanium anode and a stainless steel microporous cathode are arranged in each set of the electric filtration device. The integrated water treatment equipment provided by the invention removes pollutants with a bio-membrane method; the membrane method has characteristics of relatively large biomass, long sludge age and less residual sludge; the electric filtration treatment chamber is mainly used for sludge-water separation; each electric filtration device is composed of a microporous anode and cathode, and has effects of filtration, gas electrolysis self-cleaning, microorganism killing and the like after application of voltage.

The invention discloses a system for detecting the performances of electrofiltration equipment, and the system mainly comprises a pollution particle generation and electrostatic processing device, a particle concentration measurement device, and a power supply and electric field measurement device. The pollution particle generation and electrostatic processing device mainly comprises a filter, a blower fan, a particle injector, and the electrofiltration equipment. The particle concentration measurement device mainly comprises an attenuation chamber and an aerosol spectrograph. The power supply and electric field measurement device mainly comprises a DC high-voltage source, a DC low-voltage source, a high-voltage voltage-dividing resistor, a current probe, an ampere meter, and a voltmeter. The system enables the power supply, electric field measurement and particle concentration measurement of the electrofiltration equipment to be integrated, is simple and convenient in operation, is low in instrument cost, and is complete, simple and reliable in performance measurement of the electrofiltration equipment.

The invention provides an electric-filtering membrane, a preparation method and an application thereof, belongs to the technical field of membrane separation and particularly relates to the electric-filtering membrane with which concentration polarization and membrane pollution can be inhibited. The membrane is prepared through an immersing gel phase inversion method and an electric-conductive material is added during a preparation process of the membrane so that the membrane has an electrical conductivity. In practical use, the electric-filtering membrane can be connected to a single electrode or a double electrode of a power supply. When the electric-filtering membrane is connected to the single electrode, the concentration polarization and the membrane pollution are inhibited through Donnan effect and electrostatic repulsion by charges on a surface of the membrane. An electrode, which is connected to an opposite electrode, is arranged nearby the surface of the membrane to form an electrical field between the surface of the membrane and the electrode. Under an effect of the electrical field, the inhibiting effect by the electric-filtering membrane connected to the single electrode of the power supply on the concentration polarization and the membrane pollution are enhanced. When the electric-filtering membrane is connected to the double electrode, a current passes through the surface of the membrane to form the electrical field. Charged micro-particles and colloids are far away from the surface of the membrane under the effect of the electrical field so that the effect of inhibiting the concentration polarization is achieved.