CN103586135A - Formation mode of dust collection pole plate and ash removal water film of wet-type electric precipitator - Google Patents
Formation mode of dust collection pole plate and ash removal water film of wet-type electric precipitator Download PDFInfo
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- CN103586135A CN103586135A CN201310528825.6A CN201310528825A CN103586135A CN 103586135 A CN103586135 A CN 103586135A CN 201310528825 A CN201310528825 A CN 201310528825A CN 103586135 A CN103586135 A CN 103586135A
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Abstract
The invention discloses a formation mode of a dust collection pole plate and an ash removal water film of a wet-type electric precipitator. The formation mode is as follows: a high temperature resistant and corrosion resistant material is used for production of the dust collection pole plate, a water distribution pipeline is arranged in the dust collection pole plate to ensure the stable and reliable operation of the pole plate and water distribution uniformity on the pole plate surface; the plate surface is appressed with a fiber woven film, by capillary action, the ash removal water film is evenly formed on the pole plate surface to avoid reentrainment of dust, and at the same time, the collection efficiency on particulate matters especially fine particulate matters can be improved.
Description
Affiliated technical field
The invention belongs to environment protection equipment, relate in particular to a kind of wet electrical dust precipitator dust collecting pole plate and ash removing water film generation type thereof.
Background technology
Wet electrical dust precipitator is while utilizing its water membrane forming on dust collecting pole plate to flow downward, to clean the dust be trapped on pole plate.Compare with dry electric precipitation device: wet electrical dust precipitator does not need rapping apparatus, thereby the reentrainment of dust of having avoided rapping to cause has also prevented the wind-induced reentrainment of dust of air-flow and corona; Due to the moisture film that is distributing all the time and flowing downward on pole plate, the dust becomeing trapped on pole plate is rinsed out by moisture film immediately, thereby for high resistivity dust, anti-corona can not occur, and has avoided the reentrainment of dust causing thus; For low resistivity dust, the particle that can not be captured is fled from pole plate, again the phenomenon of Returning flow.Due to above-mentioned advantage, wet electrical dust precipitator has very high efficiency of dust collection, can adapt to various than the dust of resistance.
Existing wet electrical dust precipitator dust collector pole mostly is board-like or drum type brake.Because relying on gravity on pole plate, moisture film in wet electrical dust precipitator flows downward voluntarily, if meet with obstruction or the Geometrical change of polar board surface, will change the flow direction, the phenomenons such as " confluxing ", " branch " occur, can not form complete uniform ash removing water film below pole plate, the dust of trapping can not clean out in time, more long-pending thicker, cause corona discharge electrode to discharge to sedimentating dust, even can affect electric cleaner power supply, cause deduster normally to move.Current coal fired power generation unit is often larger, deduster smoke treatment amount has also been proposed to larger requirement, this also causes the design size of corresponding wet electrical dust precipitator larger, more than ten meter even the pole plate height of more than 20 meter will make being uniformly distributed of moisture film on pole plate more difficult.Traditional wet electrical dust precipitator uses steel dust collecting pole plate, and cost is higher, and the environment that gathers dust of wet type can cause corrosion to common steel pole plate, and using extraordinary steel pole plate or pole plate is carried out to anticorrosion processing is also a no small investment.In addition, wet electrical dust precipitator, for the dust collection of trapping being got up, often needs a large amount of deashing water, this can not meet the requirement to the intensive utilization of water resource, and can produce a large amount of deashing water, and environment is caused to secondary pollution, be also unfavorable for the comprehensive utilization of flyash.
Summary of the invention
Object of the present invention is exactly the problem that cannot form complete uniform moisture film on wet electrical dust precipitator dust collecting pole plate in order to solve, make wet electrical dust precipitator in coal-burning power plant's stable operation, provide a kind of wet electrical dust precipitator dust collecting pole plate and ash removing water film formation method that can reduce cost of investment, reduce burn into reduce water consumption.
For achieving the above object, the present invention adopts following technical proposals:
A kind of wet scrubber dust collecting pole plate, main body is used the materials such as heat resistant plastice, ceramic material, has the environment that can tolerate high temperature, corrosion in electric cleaner, and polar board surface is smooth smooth, and there is certain rigidity and mechanical strength, meet in electric cleaner the performance requirement of hanging, moving.Wet electrical dust precipitator dust collecting pole plate water distribution pipeline is positioned at pole plate inside, along flow of flue gas direction, is arranged in order, and has a main-supply road that each water distribution pipeline is connected, and supply water from bottom to top by inner water distributor road in dust collecting pole plate bottom.Water distribution pipeline leads to dust collecting pole plate top always, in relevant position, pole plate top, has water distributing pore, and the form by overflow is to pole plate water distribution.
On described dust collecting pole plate, water distributing pore supplies water to dust collecting pole plate is balanced, all identical along initial pressure, flow velocity and the flow of airflow direction pole plate top each point current direction current downflow.
Described dust collecting pole plate is generally two identical structural panel laminatings and forms, and the groove on two sheet materials forms hydraulic pipeline after splicing.For safeguarding and changing conveniently, monoblock dust collecting pole plate is spliced by the dust collector pole lath of some vertical bar shapes.
A kind of ash removing water film for wet electric dust remover formation method, hangs and is coated with fibrage film on dust collecting pole plate, and film pastes and lies prostrate in polar board surface, is beneficial to the formation of uniform water film.
Described fibrage film is generally the types such as carbon fiber, silica fibre, polypropylene fibre or terylene, has good capillarity and water distribution characteristic.Utilize the capillarity of braided fiber can make ash removing water film can be distributed in more uniformly and stably dust collecting pole plate surface.
In order to guarantee to form good moisture film on pole plate, to carry out ungrease treatment to pole plate cover fibrage film on pole plate before, remove surface and oil contaminant.
The invention has the beneficial effects as follows:
(1) adopt dust collecting pole plate of the present invention, utilize the water distribution pipeline that is uniformly distributed in pole plate inside, and the capillarity of the fibrage film of polar board surface covering, the equally distributed problem of wet electrical dust precipitator polar board surface ash removing water film can effectively be solved.
(2) ash removing water film is evenly complete, and ash-removal effect is good, on pole plate, can not form deashing dead angle, can not form and affect the dust piece that moisture film is complete, thereby corona wire can not occur to dust stratification electric discharge phenomena, guarantees that power supply is stable, guarantees electric cleaner normal operation.
(3) cost-saving, adopt the dust collecting pole plate of new material cheaper with respect to traditional wet electrical dust precipitator steel pole plate cost, also greatly reduce in the fund input preventing aspect corrosion.
(4) using water wisely, adopts equally distributed pipeline to supply water, and carries out water distribution by the capillary properties of fibrage film, forms uniform water film, can effectively reduce and keep uniform water film institute water consumption.What bring along with the minimizing of water consumption is the minimizing of deashing water circulation use equipment scale, and the minimizing of deashing water treatment amount, has reduced again conversely investment and the operating cost of equipment.
(5) installation and easy to maintenance, the dust collecting pole plate of new material is lighter with respect to traditional wet electrical dust precipitator steel pole plate quality, and installation and maintenance are convenient.Adopt the form of dust collector pole lath splicing, make as long as remove corresponding pole plate bar, to change maintenance when pole plate keeps in repair.
Accompanying drawing explanation
Fig. 1 is wet electrical dust precipitator dust collecting pole plate front view.In figure, the 1 fibrage film for polar board surface covering; 4 is dust collecting pole plate water supply line; 5 is water supply line water control valve door.
Fig. 2 is wet electrical dust precipitator dust collecting pole plate full sectional view.In figure, the 1 fibrage film for polar board surface covering; 2 is dust-collecting polar board of electric dust remover; 3 is the inner water distribution pipeline of dust collecting pole plate; 4 is dust collecting pole plate water supply line; 5 is water supply line water control valve door.
Fig. 3 is wet electrical dust precipitator dust collecting pole plate A-A vertical cross section cutaway view.In figure, the 1 fibrage film for polar board surface covering; 2 is dust-collecting polar board of electric dust remover; 3 is the inner water distribution pipeline of dust collecting pole plate; 4 is dust collecting pole plate water supply line.
Fig. 4 is wet electrical dust precipitator dust collecting pole plate B-B horizontal section cutaway view.
Fig. 5 is the single polar plate schematic diagram of wet electrical dust precipitator and C-C horizontal section cutaway view thereof.
The specific embodiment
Embodiment: as shown in Figure 1, Figure 2 and Figure 3, mainly contain: 1, fibrage film; 2, dust-collecting polar board of electric dust remover; 3, the inner water distribution pipeline of dust collecting pole plate; 4, dust collecting pole plate supply channel forms, and is provided with water supply line water control valve door 5 on dust collecting pole plate supply channel.Fibrage film 1 pastes and is fixed on dust collecting pole plate 2 surfaces, as shown in Figure 3.Dust collecting pole plate supply channel 4 is connected the inner water distribution pipeline 3 of each dust collecting pole plate, to rush buck to its supply, as shown in Figure 2.Dust-collecting polar board of electric dust remover 2 is generally relatively fitted and is assembled by two identical single dust collector pole plates as shown in Figure 5, the visible Fig. 4 of effect.Dust-collecting polar board of electric dust remover 2 hangs on wet electrical dust precipitator enclosure interior, bottom ground connection.
In running, dusty gas enters dust removal part, and by charged.Under the driving of electric field force, charged movement of dust particle is to the fibrage film 1 on dust collecting pole plate.Deashing water enters dust collecting pole plate supply channel 4 under the driving of water-delivery pump, and is delivered in the inner water distribution pipeline 3 of each dust collecting pole plate by it, and the flow of deashing water is regulated by water flow of pipeline by-pass valve control 5.Deashing water is transported to dust-collecting polar board of electric dust remover 2 tops, and the mode by overflow is distributed in the fibrage film 1 on dust collecting pole plate surface.Deashing water in fibrage film 1 flows downward under the effect of gravity, and the grit of film surface is washed away.Deashing water generally enters corresponding deashing water circulation utilization system, treated recycling.
Claims (3)
1. a wet electrical dust precipitator dust collecting pole plate, it is characterized in that, water distribution pipeline is positioned at pole plate inside, along flow of flue gas direction, vertically arrange successively, in dust collecting pole plate bottom, have a main-supply road that each water distribution pipeline is connected, and supply water from bottom to top by inner water distributor road, water distribution pipeline leads to dust collecting pole plate top always, in relevant position, pole plate top, have water distributing pore, the form by overflow is to pole plate water distribution.
2. wet electrical dust precipitator dust collecting pole plate according to claim 1, the water distributor curb flow of flue gas direction that it is characterized in that described pole plate inside is evenly arranged, guarantee that direction pole plate evenly supplies water on pole plate, all identical along initial pressure, flow velocity, the flow of each water distributing pore current direction current downflow of flue gas direction pole plate top.
3. the ash removing water film formation method of a wet electrical dust precipitator dust collecting pole plate claimed in claim 1, it is characterized in that, at dust collecting pole plate surface label volt, there is fibrage film, utilize the capillarity of film braided fiber, make deashing water be distributed in evenly, rapidly film surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528825.6A CN103586135B (en) | 2013-10-23 | 2013-10-23 | Formation mode of dust collection pole plate and ash removal water film of wet-type electric precipitator |
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| CN201310528825.6A CN103586135B (en) | 2013-10-23 | 2013-10-23 | Formation mode of dust collection pole plate and ash removal water film of wet-type electric precipitator |
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| CN103586135A true CN103586135A (en) | 2014-02-19 |
| CN103586135B CN103586135B (en) | 2017-01-25 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105583076A (en) * | 2015-12-29 | 2016-05-18 | 山东神华山大能源环境有限公司 | Dry and wet coupling electrostatic dust collection system and dust collection technology |
| CN105583078A (en) * | 2016-01-08 | 2016-05-18 | 王富强 | Liquid-level electrostatic precipitator |
| CN105689143A (en) * | 2016-03-29 | 2016-06-22 | 北京生泰宝科技有限公司 | Water curtain electrode used for electric dust precipitation |
| CN104492604B (en) * | 2014-12-22 | 2016-07-06 | 河北工业大学 | A kind of wet type moisture film electrode electricity coalescer |
| CN106861907A (en) * | 2015-12-13 | 2017-06-20 | 白连福 | A kind of wet-esp new technology |
| CN106955788A (en) * | 2017-05-03 | 2017-07-18 | 广州市美控电子科技有限公司 | Liquid electrode substrate |
| CN115445354A (en) * | 2022-07-29 | 2022-12-09 | 中建八局西南建设工程有限公司 | Dust fall collection device for construction site |
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| CN104492604B (en) * | 2014-12-22 | 2016-07-06 | 河北工业大学 | A kind of wet type moisture film electrode electricity coalescer |
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| CN105583078A (en) * | 2016-01-08 | 2016-05-18 | 王富强 | Liquid-level electrostatic precipitator |
| CN105583078B (en) * | 2016-01-08 | 2017-08-29 | 马海霞 | Liquid level electrostatic precipitator |
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| CN106955788A (en) * | 2017-05-03 | 2017-07-18 | 广州市美控电子科技有限公司 | Liquid electrode substrate |
| CN115445354A (en) * | 2022-07-29 | 2022-12-09 | 中建八局西南建设工程有限公司 | Dust fall collection device for construction site |
| CN115445354B (en) * | 2022-07-29 | 2023-12-12 | 中建八局西南建设工程有限公司 | Dust fall collection device for construction site |
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Granted publication date: 20170125 Termination date: 20191023 |