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1660 results about "Electrostatic precipitator" patented technology

An electrostatic precipitator (ESP) is a filtration device that removes fine particles, like dust and smoke, from a flowing gas using the force of an induced electrostatic charge minimally impeding the flow of gases through the unit.

Device and method for increasing grain size of PM2.5 (particulate matter2.5) through turbulent flow and chemical agglomeration coupling

ActiveCN104801420AFacilitate collision contactImprove the growth effectElectrostatic separationParticulatesEvaporation
The invention discloses a device and a method for increasing grain size of PM2.5 through turbulent flow and chemical agglomeration coupling. Dust-containing flue gas sequentially flows through a chemical agglomeration area and a turbulent flow generation area in a flue and finally enters an electrostatic dust collector; when the dust-containing flue gas flows through the chemical agglomeration area, the PM2.5 particles in the flue gas are primarily contacted with agglomeration solution fogdrops sprayed in through a dual-fluid atomizing nozzle, agglomeration solution liquid drops are evaporated, in the evaporation process, the PM2.5 particles are connected through macromolecule chains with polar groups, and the grain size of the PM2.5 is increased; the flue gas flows through the turbulent flow area, the agglomeration solution fogdrops are promoted to collide and contact the PM2.5, the PM2.5 are promoted to collide and contact the crude dust under the turbulent flow disturbance generated by a turbulence bar, the PM2.5 are further aggregated and increased in size, meanwhile, the residence time of the agglomeration solution liquid drops in the flue is prolonged, before entering the electrostatic dust collector, the agglomeration solution liquid drops are completely evaporated, and the particles of which the size is increased through agglomeration are finally moved by the electrostatic dust collector. The agglomeration increasing effect of the PM2.5 is obviously enhanced, and the using amount of an agglomeration solution is reduced.

In situ sterilization and decontamination system using a non-thermal plasma discharge

A sterilization and decontamination system in which a non-thermal plasma discharge device is disposed upstream of a suspension media (e.g., a filter, electrostatic precipitator, carbon bed). The plasma discharge device generates a plasma that is emitted through apertures (e.g., capillaries or slits) in the primary dielectric. Plasma generated active sterilizing species when exposed to contaminants or undesirable particulate matter is able to deactivate or reduce such matter in contaminated fluid stream and/or on objects. Thus, the undesirable contaminants in the fluid to be treated are first reduced during their exposure to the plasma generated active sterilizing species in the plasma region of the discharge device. Furthermore, the plasma generated active sterilizing species are carried downstream to suspension media and upon contact therewith deactivate the contaminants collected on the suspension media itself. Advantageously, the suspension media may be cleansed in situ. To increase the sterilization efficiency an additive, free or carrier gas (e.g., alcohol, water, dry air) may be injected into the apertures defined in the primary dielectric. These additives increase the concentration of plasma generated active sterilizing agents while reducing the byproduct of generated undesirable ozone pollutants. Downstream of the filter the fluid stream may be further treated by being exposed to a catalyst media or additional suspension media to further reduce the amount of undesirable particulate matter.

System for deep cooling and waste heat recovery of smoke gas in boiler

The invention relates to a system for deep cooling and waste heat recovery of smoke gas in a boiler with an independent operating system, which comprises a smoke gas deep cooler, an air heater and an independent water circulation system comprising the smoke gas deep cooler and the air heater. The smoke gas of which the dust is removed by an electrostatic dust remover is used for heating the cold water in the smoke gas deep cooler to recover the waste heat of the exhausted smoke, and the hot water at the outlet of the smoke gas deep cooler is transferred to the air heater for preheating the air, thereby increasing the temperature of the combustion-supporting air in the boiler; after the smoke gas passes through the smoke gas deep cooler, the smoke gas is directly introduced into a desulfurizing tower for desulfurization and recovery processing; and finally, the smoke gas is exhausted through a wet chimney. The system of the invention does not need to change the traditional thermodynamic system of the machine unit, and the long-period safe operation of the system can not be influenced in the process of recovering the waste heat of the smoke gas, thereby lowering the temperature of the exhausted smoke, saving the desulfurization water consumption, improving the machine unit efficiency and increasing the machine unit output.

Ultrasonic integration desulfurization denitration demercuration method and device thereof

The invention provides a method for integrally desulfurizing, denitrating and removing mercury under the ultrasonic action. Hydroxyl free radicals OH* with strong oxidizability are released when a cavitation effect is generated in a reaction solution under the ultrasonic action and subjected to the oxidization removal reaction with sulfur oxides, nitrogen oxides and Hg<0> in fume; the cleaned fume is exhausted to the atmosphere; the separated mixed acid solution is applied for producing fertilizers after being absorbed by ammonia water; and the heavy metal precipitate is extracted for the recovery. An ultrasonic generator, an ultrasonic transmitter, a cooling water system, a bubbling bed reactor, an electrostatic dust collector, a fume diffuser, a separating column and a check valve are provided. The ultrasonic transmitter is disposed in the bubbling bed reactor. The fume is introduced into a pipe, sequentially passes through the electrostatic dust collector and the check valve and is introduced into the fume diffuser from the bottom of the bubbling bed reactor. A fume outlet is positioned at the upper part of the bubbling bed reactor. A residue discharge port is formed at the bottom of the bubbling bed reactor. The inlet of the separating column is connected with the outlet of the reaction products of the bubbling bed reactor. The separating columns are respectively provided with an insoluble substance outlet, a chemical feed port and a soluble substance outlet.

Method and system for zero emission treatment of desulfured waste water

The invention discloses a method for zero emission treatment of desulfured waste water. The method comprises the following steps: 1) discharging the desulfured waste water obtained after desulfuration in a desulfuration tower into a preliminary sedimentation tank, carrying out primary separation in the preliminary sedimentation tank, and transporting an upper clear liquid separated out to a buffer pool through a slurry pump; 2) successively passing the desulfured waste water in the buffer pool through an atomization plant and a static dust catcher; 3) transporting the waste water which is from the lower part of the preliminary sedimentation tank and has large solid content to a filter press through an another sludge pump; and 4) feeding the waste water filtered back to the preliminary sedimentation tank through the slurry pump. Simultaneously, the invention also discloses a system for zero emission treatment of desulfured waste water. The zero emission treatment is conveniently carried out on the desulfured waste water through the method, the process is simple and labor is saved; and the system has a compact structure, the method is simple to implement, energy is saved, the quality of smoke at the inlet of the dust catcher is improved, the zero emission of the desulfured waste water can be really achieved, thus the system has the advantage of popularization value.

Wet static dedusting device

The invention discloses a wet static dedusting device which comprises a tower body, an electrode support and an insulated pillar, wherein the electrode support is installed in the tower body. The wet static dedusting device is characterized in that a plurality of suspended electrode rods are fixedly arranged on the electrode support; a hollow condenser tube is sleeved outside the electrode rods; a clapboard is sealed and fixedly arranged in the tower body; the condenser tube is fixedly arranged on the clapboard, with the lower end running out of the clapboard; a water inlet is arranged on the tower body; one end of the insulated pillar is fixedly connected with the electrode support, and the other end of the insulated pillar is fixedly connected with the tower body; a waste gas inlet and a dirt drain port are arranged at the lower end of the tower body; and a gas exhaust port is arranged at the upper end of the tower body. The wet static dedusting device has the advantages that a uniform water film renewed constantly is formed on the inner wall of the condenser tube and serves as a dust collecting electrode when the electrode rods discharge so that a uniform electrostatic field can be formed in the condenser tube; charges of the high voltage electrostatic electrons generated by the electrode rods adhere to the harmful particles in the exhaust gas, and under the action of the high voltage electric field, the harmful particles directionaly migrate to the wall of the condenser tube and then flow down with the water film to be drained; the ozone or plasma free radicals generated when the electrode rods discharge can oxidize and remove the fetid substances in the exhaust gas, so the exhaust gas can get deep purification treatment; and the wet static dedusting device has good dedusting and purifying effects and the whole equipment can operate safely for a long period.

Electrostatic precipitator with high-efficiency dust collecting pole

The invention relates to an electrostatic precipitator of an efficient dust collecting electrode, comprising a shell which is provided with an airflow inlet and an airflow outlet. A discharge electrode and a dust collecting electrode are arranged in the shell. Wherein, the dust collecting electrode comprises a hollowed-out metal shell, and a dust collecting plate or a dust collecting sphere or an alveolar porous plate which is filled in the shell and manufactured by porous metallic foams or porous foam plastics processed via conductive treatment, and the dust collecting plate or the dust collecting sphere moves between an integration chamber and a dust cleaning chamber. The electrostatic precipitator of the efficient dust collecting electrode of the invention selects the porous metallic foams or the porous foam plastics processed conductive treatment, to manufacture a flat type, a granular type or an alveolar porous type to fill in the shell of a metal framework or a reticular formation to manufacture the dust collecting electrode with different structures such as rotary type, flat brattice type, circular flow type and so on, and at the same time separates a dust collecting area and a dust cleaning area to make dust collection efficiency of the electrostatic precipitator reach to more than 99.99%. The dust collecting electrode of the invention is particularly applicable to the last stage of the electrostatic precipitator, wherein, after dust abatement, dust content of the gas per cubic meter is less than or equal to 10mg.

Complete equipment and method for extracting and purifying precious metals from waste circuit boards

The invention discloses complete equipment and a method for extracting and purifying precious metals from waste circuit boards. The complete equipment comprises a bottom-blowing furnace, a secondary smoke combustion furnace, an absorption tower, a pulsed jet cloth filter, a wet desulfurization device and an electrostatic precipitation defogging device, and is characterized in that smoke generated by the bottom-blowing furnace is discharged through a flue arranged on the top of the bottom-blowing furnace; the flue communicates with an inlet of the secondary smoke combustion furnace; the secondary smoke combustion furnace communicates with a spraying quenching tower through a smoke waste heat boiler; an outlet of the spraying quenching tower communicates with the pulsed jet cloth filter through the absorption tower; an activated carbon spraying device is arranged inside the absorption tower; the pulsed jet cloth filter communicates with the wet desulfurization device; and the wet desulfurization device communicated with a chimney through the electrostatic precipitation defogging device. Effective separation and respective enrichment and recycle of various metals are achieved, organic substances are used as fuel, and no secondary pollution is generated for the environment. The process procedure is short, and the remarkable economic, environment-friendly and social benefits are achieved.

Rotating anode electrostatic precipitator

The invention discloses a rotating anode electrostatic precipitator, comprising a rotating anode device, a cathode ray and a rotary steel brush ash-cleaning mechanism, the rotating anode device comprises a drive roller, a driven roller, a drive sprocket which connects the drive roller and the driven roller, a drive chain and an anode plate which is connected on the drive chain, the heteropolar distance between the anode plate and the cathode ray is 200mm or 230mm or 260mm; the driven roller adopts a free suspension structure and can ensure the automatic centering of the driven roller and the free tightening of the drive chain; the rotary steel brush ash-cleaning mechanism comprises at least one pair of ash-cleaning brush components which rotate reversely, the central distance of each pair of the ash-cleaning brush components which rotate reversely is continuously adjustable, and movable sealing devices are arranged at two ends of each ash-cleaning brush component. The rotating anode electrostatic precipitator simultaneously takes into account of secondary blowing dust, dust-removing effect, occupied area and equipment cost. An electric field can operate efficiently and stably, the cost and the equipment load are reduced, and the service life is simultaneously prolonged.

Vehicle tail gas purifying device

The invention discloses a vehicle tail gas purifying device. The vehicle tail gas purifying device comprises a main body; a temperature difference generator, an asbestos filter cylinder and an activated carbon filter screen are mounted in an inner cavity of the main body in sequence from left to right in a tail gas feeding direction; a relative fixed base is arranged between the temperature difference generator and the asbestos filter cylinder; an electrostatic dust removing anode plate and an electrostatic dust removing cathode plate are respectively mounted on the relative fixed base; a turbulent fan is fixedly mounted on the inner wall of the temperature difference generator through a fixed frame; heat collecting plates are respectively arranged on the inner walls of two opposite sides of the temperature difference generator; an equipment box is fixedly welded in the middle position of the outer side of the top of the main body; a transformer and a protection switch are fixedly mounted in an inner cavity of the equipment box; and the temperature difference generator is connected with an accumulator through an intelligent charger. The vehicle tail gas purifying device is skillful in concept, uses vehicle tail gas afterheat for generating electricity, fully uses resources, can purify and decompose vehicle tail gas, and reduces environmental pollution by the vehicle tail gas.

Dry and wet methods combined aluminum electrolysis flue gas deep treatment process

A novel process for realizing deep treatment of electrolytic aluminum flue gas through combining a dry-wet method is characterized in that flue gas of each electrolytic cell is fully contacted with fresh alumina powder inside a VIR reactor; after fluorine is absorbed, the alumina powder and the flue gas enter an electrostatic dust collector so as to remove most alumina powder and alumina powder dust; waste gas enters an absorption tower of a wet system, and is in counter current contact with an absorption liquid so as to remove alumina powder, dust, hydrogen fluoride and sulfur dioxide in the waste gas; and the purified tail gas is exhausted into the atmosphere. The novel process has the advantages that the process turns the prior dry bag-type dust removal into electrostatic dust removal, thereby substantially reducing the investment of dry dust removal and the operating cost of the entire environmental protection system; then, wet treatment is adopted so as to reach the goal of deep treatment; meanwhile, SO2 with flue gas removed is absorbed, thereby greatly reducing the emission of pollutants during aluminum electrolysis; through the organic combination of the dry-wet technology, the process ensures that fluoride inside the wet system is directly synthesized into cryolite and is reclaimed, thereby solving the problems that the prior wet purification process needs to adopt a villaumite recovery device and that villaumite liquid wastes are difficult to treat.

Simultaneous sintering and desulphurization and denitration system, and desulphurization and denitration method

The invention discloses a simultaneous sintering and desulphurization and denitration system. The system comprises a sintering machine, a bellows, an electrostatic precipitator, a main exhaust fan and a chimney which are connected through a flue gas main pipeline. A branched pipeline is led out from an SO2 and NOx high-concentration-region bellows outlet pipeline, and is adopted as a sintering flue gas circulation pipeline. With the sintering flue gas circulation pipeline, a circulation flue gas flapper valve, a precipitator, a natural gas inlet valve connected to an outer gas inlet pipe, a circulation fan, and circulation flue gas mask are sequentially connected. The flue gas mask is covered on a sintering material layer right above the SO2 and NOx high-concentration-region bellows. A sprayer is arranged between a sintering grate-layer material system and a sintering material feeding system of the sintering machine. A residual ammonia water solution tank is connected with the sprayer. The cost of the system and the method are low. With the method and the system, discharge concentration of SO2 and NOx in sintering flue gas can be effectively reduced, and desulphurization and denitration can be simultaneously carried out during the sintering process. Therefore, environment pollution caused by sintering flue gas can be reduced.

High-frequency high-voltage power supply for electrostatic precipitation, and control method of the same

The invention discloses a high-frequency high-voltage power supply for electrostatic precipitation, and a control method of the same. The power supply comprises a rectification module, a high-frequency inverting module, a transformer module, a high-voltage rectification module, an upper computer monitoring and system fault diagnosis unit, a system power supply module, a remote monitoring unit and a control unit. The method is specified as follows: a three-phase AC power supply is output in DC form by a three-phase rectification and filtering circuit, then, the DC is output in high-frequency AC form by a high-frequency inverting circuit, the high-frequency AC is boosted by a high-frequency boosting transformer, finally, the boosted current is rectified into high-voltage DC by a high-frequency rectification silicon stack, and the high-voltage DC is loaded to an electrostatic precipitation load; after being treated with signal conditioning and processing, the data of inside of the power supply acquired in real time is input into the control unit for controlling the high-frequency inverting circuit so as to regulate the output of the power supply, the control unit transmits the acquired parameters to the upper computer via a CAN(Controller Area Network)bus interface, and the upper computer executes fault diagnosis, provides the current operational state of the power supply and the fault diagnosis result, and periodically transmits the state and the result to a remote terminal.
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