38 results about "Electrofiltration" patented technology

The invention discloses an electrostatic filter, air purification equipment and a ventilation system. The electrostatic filter comprises a plurality of electrode plates arranged in parallel in the first direction, the electrode plates comprise first electrode plates and second electrode plates which are alternately arranged in the first direction and serve as high-voltage electrode plates and low-voltage electrode plates respectively, and a high-voltage electrostatic field is formed between every two adjacent electrode plates. The first electrode plate comprises a first insulating base material and a first conducting layer arranged on one side of the first insulating base material, the second electrode plate comprises a second insulating base material and a second conducting layer arranged on one side of the second insulating base material, and the first conducting layer and the second conducting layer are only arranged on the surface of the same side of the corresponding insulating base material and are arranged in a staggered mode in the height direction. Through the structure, the conductive edges of the adjacent electrode plates are not directly opposite any more, and a potential creepage or discharge path needs to bypass along the surface of the insulating base material, so that local electric field concentration is reduced, the possibility of discharge is reduced, and the electrode plates are suitable for electrostatic filtration with small-interval arrangement of the electrode plates.

The invention provides a fractal patterned bipolar co-mask and a manufacturing method and application thereof in water purification, the fractal patterned bipolar co-mask comprises a base film and a patterned conductive layer, the patterned conductive layer comprises an anode and a cathode which are symmetrically and complementarily arranged, the anode and the cathode are arranged on the surface of the same side of the substrate film, and a parting line of the anode and the cathode comprises Peano curves with different iterations. When the fractal patterned bipolar co-mask is used for electrofiltration water purification, the fractal patterned bipolar co-mask has the advantages of high-efficiency purification performance, low energy consumption performance, long-term stability performance, wide applicability and suitability for distributed treatment.

The application discloses an electrostatic filter, an air purification device and a ventilation system. The electrostatic filter comprises a plurality of electrode sheets arranged in parallel along a first direction, the electrode sheets comprising first electrode sheets and second electrode sheets arranged alternately along the first direction, respectively serving as high-voltage electrode sheets and low-voltage electrode sheets, and a high-voltage electrostatic field being formed between adjacent electrode sheets. The first electrode sheet comprises a first insulating base material and a first conductive layer arranged on one side of the first insulating base material, and the second electrode sheet comprises a second insulating base material and a second conductive layer arranged on one side of the second insulating base material, wherein the first conductive layer and the second conductive layer are arranged on the same side surface of the corresponding insulating base material and are arranged in a staggered manner in the height direction. Through the above structure, the conductive edges of adjacent electrode sheets are no longer directly opposite, and the potential creeping or discharging path needs to be detoured along the surface of the insulating base material, thereby reducing the local electric field concentration and reducing the possibility of discharging, and the electrostatic filter is suitable for electrostatic filtering applications with small electrode sheet spacing.

The present disclosure relates to an electrostatic filtering device. The electrostatic filtering device includes a positive electrode plate group and a negative electrode plate group. The positive electrode plate group and the negative electrode plate group use different support components to connect the various electrode plates in the group. At least one first electrode plate or an insulating support plate connected to the first electrode plate is configured to participate in forming a sealed cavity that is a sealed structure at least relative to the windward surface. A second electrode plate with a polarity different from that of the first electrode plate and / or a second support component connected to the second electrode plate are provided in the sealed cavity. The second electrode plate or the second support component is connected to the sealed cavity or the first electrode plate or the first support component connected to the first electrode plate using an insulating material component inside the sealed cavity. The second electrode plate outside the sealed cavity, the second support component outside the sealed cavity, and the second support component when passing through the sealed cavity are not in contact with the sealed cavity. In this way, it is possible to prevent or reduce the contact of unpurified air with the insulating support structure between the positive and negative electrodes.

A disposable, flat-fold respirator is presented that includes a mask body that includes a plurality of panels which may fold in towards each other and may unfold into an open configuration. The mask body includes a single layer of charged filter material. The plurality of panels includes an upper panel, a lower panel, and a central panel. The central panel is connected to the upper panel and lower panel. The respirator filters at least 95% of airborne particles with a mass median aerodynamic diameter of 0.3 µm. A harness is secured to the mask body.

To provide a particle classification device and a particle classification method.SOLUTION: A particle classification device comprises: a supply chamber 51 which supplies a suspension solution 11 in which particles are dispersed; a filtration chamber 52 which allows fine particle components in the solution to pass therethrough by an electric-field filtration action and retains a concentrated liquid of coarse particle components; and a filtrate chamber 53 which discharges, to the outside, a filtrate including the fine particle components that have passed through. The filtration chamber 52 includes: a plate-shaped anode electrode 14 disposed on a supply chamber side and having through holes; and a cathode filter plate electrode 14 disposed on a filtrate chamber 53 side, including a diaphragm 13 having pores that block negatively-charged coarse particle components and having pores.SELECTED DRAWING: Figure 1

The utility model relates to an electrostatic filtering device and an electrostatic filtering system. The electrostatic filtering device comprises a plurality of positive electrode plates and a plurality of negative electrode plates. And the plurality of positive electrode plates and the plurality of negative electrode plates are alternately arranged at intervals. And the negative electrode plate is communicated with the negative electrode of the high-voltage power supply. At least one first electrode plate exists in the plurality of positive electrode plates and the plurality of negative electrode plates, and the first electrode plate is formed by wrapping a conductive material with a high-resistance material or an insulating material. At least one first electrode plate is provided with an exposed conductive material, and the distance between the exposed conductive material and the edge position of the first electrode plate is larger than or equal to a first threshold value. Moreover, if the two adjacent electrode plates are both first electrode plates and have exposed conductive materials, the distance between the exposed conductive materials of the two adjacent electrode plates in the direction perpendicular to the distance between the electrode plates is larger than or equal to the minimum distance between the electrode plates. Therefore, potential performance or safety problems caused by close-range deployment of the electrostatic filter and the peripheral conductive part can be avoided.

The invention relates to a gas filter insert (10) for inserting into an insert receptacle of a filtration device, comprising a multi-layer structure (12), which has two electrically conductive polarisation layers (18a, 18b) and a dielectric filter layer (22) which is arranged between the polarisation layers (18a, 18b) and can be polarised by means of the polarisation layers (18a, 18b), wherein the layer structure (12) has a dry layer (24) which is arranged between the polarisation layers (18a, 18b) and is designed to remove one or more fluids (F) which impair the polarisation of the filter layer (22).

The invention relates to the technical field of tail gas purification devices, and discloses a tail gas purification device and method for a thermal power plant, the tail gas purification device comprises a purification box, the left side of the purification box fixedly communicates with a fixed pipe, the left side of the fixed pipe is provided with a connecting pipe, and the inner wall of the purification box is slidably connected with an electrostatic filter plate; the front side of the electrostatic filter plate is fixedly connected with a fixing plate, the two sides of the fixing plate are fixedly connected with trapezoidal plates, and the front side of the purification box is fixedly connected with a connecting plate. When the device is used for treating tail gas, the electrostatic filter plate is started to work to adsorb dust particles in the tail gas, so that the tail gas purification efficiency of the device is improved; meanwhile, when the equipment is maintained and replaced, the two mounting shells can be pressed at the same time to relieve limiting of the fixing plate, rapid dismounting and mounting of the equipment during maintenance are achieved, the electrostatic filter plate is more convenient to replace and maintain, the downtime of the equipment is shortened, and the overall operation efficiency is improved.

The invention relates to an electrostatic filtering device and an electrostatic filtering system. The electrostatic filtering device comprises a plurality of positive electrode plates, a plurality of negative electrode plates and at least one continuous supporting structure. For at least one pair of adjacent first electrode plates connected with at least one continuous supporting structure, one first electrode plate leads out at least part of the internal conductive material in a first area corresponding to the connection position of the continuous supporting structure connected with the continuous supporting structure, so that the exposed conductive material exists in the first area; the other first electrode plate leads out at least part of the internal conductive material in at least one second region adjacent to the first region corresponding to the connection position of the continuous supporting structure connected with the continuous supporting structure, so that the exposed conductive material exists in the second region; the distance between the exposed conductive materials of the adjacent first electrode plates in the direction perpendicular to the distance between the electrode plates is larger than or equal to a first threshold value. Therefore, the Faraday cage structure can be damaged, and the purpose of maintaining the electric field intensity is achieved.

The application discloses a method for synthesizing hydrogen peroxide by electric filtration of carbon nanotube woven membrane. The method comprises the following steps: S1. dispersing carbon nanotubes without chemical catalytic modification in a solvent, and ultrasonic treatment to obtain a dispersion liquid; S2. placing the dispersion liquid on a microporous filter membrane, under the driving of pressure, the carbon nanotubes are spontaneously interwoven, physically overlapped and layer-by-layer interlocked on the surface of the microporous filter membrane under the guidance of hydrodynamic orientation, in-situ assembling a three-dimensional network structure of the carbon nanotubes to obtain a carbon nanotube woven membrane; S3. after washing and drying the carbon nanotube woven membrane, the carbon nanotube woven membrane is assembled as a cathode in a cathode chamber of an electrolytic cell, and the edge of the carbon nanotube woven membrane is sealed; and S4. connecting a circuit between the parallel placed cathode and anode, pumping an electrolyte containing dissolved oxygen into the electrolytic cell, and generating hydrogen peroxide through a two-electron oxygen reduction reaction after the electrolyte flows through the anode and vertically penetrates the nanoscale interwoven pore channels in the interior of the cathode.

[Problem] To provide a device for producing pure water and a system for producing pure water. [Solution] The present invention is provided with: an anion separation part 10A which is provided with an anion separation chamber 52 for supplying raw water 11 that contains an anion component and a cation component, and separating the anion component, as a first discharge liquid 11A, from the raw water 11 by an electric field filtering action; a cation separation part 10B which is provided with a cation separation chamber 54 for introducing a cation liquid 16 containing the cation component from which the anion component has been separated, and separating the cation component, as a second discharge liquid 11B, by an electric field filtering action; and a pure water chamber 55 for discharging a pure water 11C from which the anion component and the cation component have been removed.

An online lubricant paint film treatment device for an oil-injected screw compressor includes: an intermediate tank with an oil inlet pipe and an oil return pipe; a solenoid valve on the oil inlet pipe; a high-pressure pump on the oil return pipe; a first manual valve on the oil return pipe, located between the high-pressure pump and the intermediate tank; an oil outlet and an oil return port on the side wall of the intermediate tank, with the oil return port below the oil outlet; and an oil film removal and purification machine connected to the oil outlet and the oil return port via pipelines, comprising, in series: an oil filter pump with its inlet connected to the oil outlet; a high-pressure electrostatic filter; an ultrafine filter; an oil sludge removal filter; and a fine filter with its outlet connected to the oil return port. This invention features a novel structure, employing a three-stage filtration system of "ultrafine filter + electrostatic filter + ion exchange resin filter," which can simultaneously remove dissolved paint film (0.01 micrometer level), submicron particles, and acidic substances without damaging lubricant additives (such as antifoaming agents and viscosity index improvers).

The utility model relates to an electrostatic filtering device. And the electrostatic filtering device comprises a positive electrode plate group and a negative electrode plate group. The positive electrode plate group comprises a plurality of positive electrode plates. The negative electrode plate group includes a plurality of negative electrode plates. The positive electrode plates are communicated with the positive electrode of the high-voltage power supply, and the negative electrode plates are communicated with the negative electrode of the high-voltage power supply. The positive electrode plate group and the negative electrode plate group are arranged on the leeward side, and the electrode plates in different groups are connected together by using a plurality of first supporting parts. And the positive electrode plate group and the negative electrode plate group are arranged on the windward side, and at least part of the electrode plates in the same group are connected together by using a plurality of second supporting components. Therefore, the complexity and the cost of the product can be reduced.

The utility model belongs to the technical field of cabinet fresh air machines, and particularly relates to a cabinet fresh air machine which comprises a machine shell body, an air inlet and an air outlet are formed in the machine shell body, and a primary efficiency filter module, an electrostatic filter module, a medium efficiency filter module and a fan module are sequentially arranged in the machine shell body from bottom to top. The primary filter module, the electrostatic filter module and the medium-efficiency filter module are sequentially distributed from bottom to top, cleaning is convenient, and dust can be prevented from being collected on the medium-efficiency filter module.

This invention relates to the field of air purification technology, specifically to a method, device, system, and storage medium for controlling an electrostatic filter. The method includes: acquiring the airflow velocity through the electrostatic filter in real time; determining whether the airflow velocity is within the rated airflow velocity range; adjusting the voltage of the electrostatic filter when the airflow velocity is below the rated airflow velocity range; and adjusting the cross-sectional area and / or filter element pleat angle of the electrostatic filter when the airflow velocity is above the rated airflow velocity range but below or equal to the airflow velocity adjustment threshold. By implementing this invention, the voltage of the electrostatic filter is adjusted when the airflow velocity is above the rated airflow velocity range, and the cross-sectional area or filter element pleat angle is adjusted when the airflow velocity is below the rated airflow velocity range. Therefore, this control method reduces the adjustment of the electric field strength while maintaining high efficiency when the airflow velocity is above the rated airflow velocity range, avoiding problems such as energy consumption, a sharp increase in ozone, and breakdown caused by increasing the electric field strength. It also promptly reduces the voltage when the airflow velocity is below the rated airflow velocity range, reducing energy waste.

An electrostatics-enhanced air filter that produces an electrostatic attraction for dust particles using an electrical ground or electrically charged filter is disclosed. The present invention takes advantage of the mirror-charge effect that spontaneously induces an opposite and attractive charge on the filter that pulls in dust particles. A fibrous filter medium pad is impregnated with a liquidus solution, which is a conductive aqueous electrolyte solution which would capture dust particles. Charges on dust particles would be drained off through the liquidus solution to the ground, preventing the effective electrical potential of the filter from changing. The liquidus solution also contains a detergent that keeps the filter clear of oily air contaminants to maintain conductivity through the filter service life. The liquidus solution contains a wetting agent for engulfing dust particles therein / thereon. The liquidus solution also contains a hygroscopic agent that prevents it from partially drying during its use.

The application discloses an end insulation of an electrostatic filter and the electrostatic filter. The end insulation comprises a connecting cylinder part and a seat part. The cylinder part is sleeved outside the conductive rod and extends along the axial direction of the conductive rod. The seat part is connected to the outer side of the side plate and extends along the outer surface of the side plate. The cylinder part and the seat part of the end insulation are made of an electric arc resistant and insulating material. The creepage distance between the conductive rod and the corresponding side plate is at least the sum of the axial extension length of the cylinder part from the connection with the seat part and the radial extension length of the seat part from the connection with the cylinder part. The application can reduce the possibility of arc drawing by arranging the largest possible creepage distance between the conductive rod and the side plate, thereby improving the reliability of the end insulation.

The utility model relates to a kind of electrostatic filtration devices.Electrostatic filtration device includes multiple positive electrode plate and multiple negative electrode plate.At least one pair of adjacent first electrode plate exists in multiple positive electrode plate and multiple negative electrode plate, and first electrode plate is insulating electrode plate or high resistance electrode plate, multiple positive electrode plate and multiple negative electrode plate are connected using different support components respectively, and the initial working voltage of electrostatic filtration device is greater than or equal to 2.0kV / mm, to improve initial working efficiency.Electrostatic filtration device further includes first high-voltage power supply, and first high-voltage power supply includes first resistance connected in series at output, and working voltage is first voltage value when working current is first current value, and first voltage value represents the working voltage compatible with the air withstand voltage value between electrodes when pollution degree is high and / or environmental humidity is large.Thus, while ensuring initial working efficiency, the hidden danger of long-term operation discharge sparking of equipment caused by constant high voltage work can be avoided.

The invention discloses a mixed refrigerant recycling and purifying system and method, the system comprises a Stirling cryocooler, the Stirling cryocooler is provided with a first cold end for providing a precooling temperature, a second cold end for providing a first condensation temperature and a third cold end for providing a second condensation temperature, and the first condensation temperature is higher than the second condensation temperature; the electrostatic filtering unit is thermally coupled with the first cold end and is used for removing oil from the gaseous mixed refrigerant at the precooling temperature; and the first condenser is positioned at the downstream of the electrostatic filtering unit and is thermally coupled with the second cold end. The static filtering unit is thermally coupled with the first cold end of the Stirling cryocooler, oil removal of the gaseous mixed refrigerant is achieved in the pre-cooling temperature area, meanwhile, fractional condensation of refrigerant components is achieved through the multi-stage cold end temperature provided by the Stirling cryocooler, and high-boiling-point components and low-boiling-point components are sequentially separated.

This utility model relates to the technical field of central air conditioning air purification and disinfection equipment, specifically a central air conditioning air purification and disinfection device, including an air inlet pipe, one end of which is fixedly connected to an ionization chamber. The horizontal cross-section of the ionization chamber is semi-circular, and an ionization plate is inserted into the bottom of the ionization chamber. An air purification mechanism is fixedly connected to one end of the ionization chamber. This utility model applies a high voltage positive charge to the ionization plate, causing the air passing through the ionization chamber to undergo corona discharge, thus positively charging dust, microorganisms, and some aerosols in the air. At the same time, a high voltage negative charge is applied to the dust collection plate, forming a strong electric field opposite to that of the ionization chamber inside the filter chamber. Charged particles, dust, and microorganisms after passing through the ionization chamber are adsorbed onto the surface of the dust collection plate under the action of Coulomb force, thereby achieving the effect of purifying the air and solving the problem of insufficient air purification function caused by the single function of existing central air conditioning filter structures.

The invention relates to the technical field of separation and purification of pollutants in air, in particular to an oil mist purification system and oil mist purification equipment. Comprising an oil mist interceptor, an electrostatic filter, a gas mixing device, a demister, a fan and a precision filter, the fan is arranged in the middle of the system, a negative pressure working area is formed at the front end of the fan, and a positive pressure working area is formed at the rear end of the fan. Oil mist waste gas from the CNC machine tool firstly passes through the oil mist interceptor to remove large-particle-size oil mist liquid drops and refine particle size distribution, and then enters the electrostatic filter to be subjected to electric field trapping; then the airflow enters a gas mixing device and is mixed with cold air to reduce the temperature, so that part of gaseous pollutants are condensed to form liquid drops, and the liquid drops are separated through a demister; and the treated airflow enters the fan to be pressurized, then enters the precision filter to further filter fine particles, and then is discharged. The purification efficiency of the oil mist waste gas is improved by reasonably configuring all the purification units and utilizing form transformation of pollutants in the treatment process.

According to the electrostatic filter screen and the air treatment equipment, the assembling procedure of the electrostatic filter screen is simplified, so that the production efficiency of products is improved, and the labor cost is reduced. The electrostatic filter screen comprises an electrostatic filter element which comprises a plurality of filter pieces, and the filter pieces are arranged in parallel at intervals in the thickness direction of the filter pieces; a plurality of limiting grooves are formed in the two ends, in the length direction, of the frame respectively, and the two ends, in the length direction, of each filter piece are clamped in the corresponding limiting grooves respectively.

The present invention relates to a wet electrostatic precipitator from the field of dust collection systems.The wet electrostatic precipitator comprises the following: a base plate, a support frame, a dust collector box, an electrostatic precipitator mechanism, a two-pole conversion mechanism, a flow stabilization mechanism, a water supply spray mechanism, and a vibration cleaning mechanism, wherein the support frame is fixedly mounted on the top of the base plate, wherein the dust collector box is fixedly mounted on the top of the support frame, wherein a plurality of groups of electrostatic precipitator mechanisms are fixedly arranged at uniform intervals along the front-back direction in the central part of the interior of the dust collector box, wherein the two-pole conversion mechanism is arranged on the electrostatic precipitator mechanism, wherein the flow stabilization mechanism is fixedly arranged on the inside of the bottom of the dust collector box, and wherein the vibration cleaning mechanism is fixedly arranged on the bottom of the electrostatic precipitator mechanism.The present invention improves the efficiency and flexibility of dust collection by combining the electrostatic precipitator mechanism with the two-pole conversion mechanism. The flow stabilization mechanism effectively reduces the unevenness of the flue gas flow, thus improving the effectiveness of dust removal. The synergistic effect of the water supply spray mechanism and the vibration cleaning mechanism ensures long-term stable operation of the dust collector.

The present invention provides an electrostatic precipitator for treating a gas stream carrying particulate matter. The electrostatic precipitator comprises a housing defining a chamber, the housing comprising an inlet configured to enable the gas stream carrying particulate matter to enter the chamber, and an outlet configured to enable the treated gas stream to exit the chamber. The electrostatic precipitator further comprises a charging electrode arranged within the chamber towards the inlet, a filter element arranged within the chamber towards the outlet such that to reach the outlet the gas stream passes through the filter element, an insulator element arranged between the charging electrode and the filter element, and a collection electrode configured to be held at electrical earth. The charging electrode is configured to be held at a first high voltage potential such that particulate matter in the gas stream becomes charged as it passes the charging electrode, and the filter element is configured to be held at a second high voltage potential that is greater than the first high voltage potential, such that when the gas stream is conveyed through the filter element to the outlet, charged particulate matter is repelled from the filter element towards the collection electrode. The invention further provides a method for removing particulate matter from a gas stream.

A functionalized metal / carbon nanotube-based electrified nanoporous membrane with a cooperative nitrite-enriching component to achieve energy-efficient ammonia production from low-concentration nitrate. The use of flow-through electrofiltration reduces energy consumption and treatment time. Integrating an ionophore as a cooperative component into the conductive filtration membrane enriches nitrite within the catalyst microenvironment, enabling conversion of unreacted NO2- to NH3 to enhance overall selectivity without directly modifying the catalytic active sites.

The invention discloses a novel electrostatic filter, and belongs to the field of electrostatic filters, the novel electrostatic filter comprises an outer frame, a filter screen assembly which is arranged in the outer frame and forms an air passing channel, and an electrode assembly, the electrode assembly comprises first electrode plates and second electrode plates which are arranged in a staggered manner, and the first electrode plates and the second electrode plates are oppositely arranged to form a plurality of electric field gaps; the electrodes can be electrically connected with different polarity ends of an external high-voltage power supply respectively; a full-covering weak conductive covering layer is arranged on the outer surface of a conductive electrode layer, and a first surface resistivity area and a second surface resistivity area are formed on the edge, so that the charge discharge rate from the edge to the inner side is in controlled gradient change, and the problems of abnormal discharge and leakage current rise caused by edge charge stacking are solved.

The application provides a method and a reactor for producing hydrogen and chlorine by electrolyzing seawater through electric filtering in sequence. The reactor comprises a shell, a first gas-permeable partition, a penetrating cathode unit, a second gas-permeable partition, a penetrating anode unit and a driving device. The shell has a closed reaction chamber, and is provided with an electrolyte inlet and a solution outlet. The first gas-permeable partition, the penetrating cathode unit, the second gas-permeable partition and the penetrating anode unit are all in the reaction chamber. The two gas-permeable partitions are respectively arranged on the two sides of the penetrating cathode unit, and the second gas-permeable partition is between the penetrating cathode unit and the penetrating anode unit. The two gas-permeable partitions are used for allowing hydrogen generated by the cathode to be discharged and preventing liquid electrolyte from leaking. The driving device is connected to the electrolyte inlet, and is used for pumping electrolyte into the reaction chamber and driving the electrolyte to form a one-way flow which sequentially penetrates and flows through the first gas-permeable partition, the penetrating cathode unit, the second gas-permeable partition and the penetrating anode unit and then flows out from the solution outlet.

To provide an electric field filtration device and a method for manufacturing a filter material for the electric field filtration device, which improves separation efficiency, functions adequately in low-voltage regions, and achieves high functionality.SOLUTION: A device includes a supply chamber 12 for supplying a supply liquid 11 containing positively charged components, a cathode filter plate electrode 14 equipped with a filter material 13 having pores 13a for separating the positively charged components, positioned on both sides of the supply chamber 12, a flat anode electrode 15, and a filtrate chamber 17 into which the filtrate separated from the positively charged components flows. The filter material is made of a high-dielectric-constant material.SELECTED DRAWING: Figure 1

The application discloses a high-efficiency and low-resistance hawk-wing-shaped active electrostatic auxiliary filtering section of a new fan unit for buildings, and relates to the technical field of air purification equipment. The filtering section comprises a shell, a pre-drying, pre-filtering and negative ion integrated section, a first pipe wall dust collecting section, a hawk-wing-shaped high-voltage electrostatic filtering section, a second pipe wall dust collecting section and an optional function module which are sequentially arranged in the shell from an air inlet to an air outlet. The pre-drying, pre-filtering and negative ion integrated section is arranged at the air inlet, and the optional function module is arranged at the air outlet. The filtering section can realize the dual effects of high filtering efficiency and low air resistance, is more efficient in intercepting and killing microorganisms, and has a modular configuration and multiple functions.