22 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 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 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.

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.

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.

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.

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.

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 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.

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.

The utility model relates to a kind of electrostatic filtration device and electrostatic filtration system.Electrostatic filtration device includes multiple positive electrode plate, multiple negative electrode plate, at least one continuous support structure.For at least one continuous support structure at least one pair of adjacent first electrode plate connected, one of first electrode plate in the first area corresponding to the continuous support structure connection position of the continuous support structure connected with this, at least part of internal conductive material is led out to make the first area exist bare conductive material, another first electrode plate in the first area corresponding to the continuous support structure connection position of the continuous support structure connected with this, at least one second area adjacent to the continuous support structure connection position of the continuous support structure connected with this, at least part of internal conductive material is led out to make the second area exist bare conductive material, and, the distance of bare conductive material of adjacent first electrode plate in the vertical direction with electrode plate spacing is greater than or equal to first threshold value.

The invention provides a method and a reactor for producing hydrogen and chlorine by electrolyzing seawater through sequential electrofiltration. The reactor comprises a shell, a first breathable partition plate, a penetration type cathode unit, a second breathable partition plate, a penetration type anode unit and a driving device, a closed reaction chamber is arranged in the shell, and an electrolyte inlet and a solution outlet are formed in the shell; the first air-permeable partition plate, the penetration type cathode unit, the second air-permeable partition plate and the penetration type anode unit are all arranged in the reaction chamber; the two breathable partition plates are arranged on the two sides of the penetrating type cathode unit respectively, the second breathable partition plate is arranged between the penetrating type cathode unit and the penetrating type anode unit, and the two breathable partition plates are used for allowing hydrogen generated by the cathode to be discharged but preventing liquid electrolyte from leaking; the driving device is connected to the electrolyte inlet and used for pumping electrolyte into the reaction chamber and driving the electrolyte to form one-way flow which sequentially penetrates through the first breathable partition plate, the penetrating type cathode unit, the second breathable partition plate and the penetrating type anode unit and flows out of the solution outlet.

The invention discloses a method for synthesizing hydrogen peroxide by electrofiltration of a tip nitrogen-doped carbon nanotube membrane, which comprises the following steps: selecting the tip nitrogen-doped carbon nanotube membrane as a cathode and a porous metal plate as an anode, and relatively fixing the cathode and the anode in an electrofiltration device; adding an electrolyte into the electric filtration device, wherein the electrolyte is an oxygen-containing solution; connecting the cathode and the anode with an external electric field, and enabling the oxygen-containing solution to sequentially pass through the anode and the cathode under the action of the external electric field by adopting a dead end filtering mode to prepare hydrogen peroxide; the flow velocity of the oxygen-containing solution is 0.5 mL / min to 8 mL / min, and the voltage value of the external electric field is 1.5 V to 3.5 V. A C-N structure in the tip nitrogen-doped carbon nanotube film can stably catalyze a two-electron oxygen reduction reaction, the generation rate of hydrogen peroxide is increased, no metal component is needed in preparation, the problems of metal loss and secondary pollution are avoided, the mass transfer efficiency of dissolved oxygen in an oxygen-containing solution and effective contact between solution oxygen and a catalytic interface are further improved, and the catalytic performance of the nitrogen-doped carbon nanotube film is improved. The diffusion limitation of a traditional flow-through electrode is broken through.