CN102371211A - Wet-type electric precipitator - Google Patents
Wet-type electric precipitator Download PDFInfo
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- CN102371211A CN102371211A CN2011103762395A CN201110376239A CN102371211A CN 102371211 A CN102371211 A CN 102371211A CN 2011103762395 A CN2011103762395 A CN 2011103762395A CN 201110376239 A CN201110376239 A CN 201110376239A CN 102371211 A CN102371211 A CN 102371211A
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- positive plate
- wet electrical
- electrical dust
- deduster body
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Abstract
The invention discloses a wet-type electric precipitator, which comprises a precipitator body, at least two anode plates and at least one group of cathode frames, wherein the precipitator body is vertically arranged; the anode plates are vertically arranged in the precipitator body in parallel; and one group of cathode frames is vertically arranged between every two anode plates. The precipitator body is vertically arranged, and anode plate flushing fluid in the wet-type electric precipitator flows downwards and has the same flowing direction with fume, so that pollutants in the fume can be collected by the anode plate conveniently. The wet-type electric precipitator has the advantage of simple structure and is convenient to use. Meanwhile, aerosol formed by tiny particles, SO3 and the like can be efficiently removed, equipment blockage and chimney corrosion are lightened, technical problems, such as chimney rain, gypsum rain, blue smoke and the like can be solved, and the environment friendliness requirement can be achieved.
Description
Technical field
The present invention relates to environmental technology field, particularly a kind of wet electrical dust precipitator.
Background technology
Along with people's improves constantly combined pollutants such as fine dust, acid mist, heavy metal harm environment and healthy understanding; Impel improving constantly of atmosphere pollutants emission standards; New discharge standard requires the emission level of pollutants such as fine particle, acid mist, heavy metal lower; Traditional smoke absorption device has part pollutant in the flue gas controls effect preferably, but fine dust, heavy metal, SO
3Combined pollutants such as acid mist are still is paid close attention to and is needed an eager difficult problem that solves.
After flue gas washs through the absorption tower, unabsorbed fine dust, SO
3Combined pollutants such as acid mist not only produce secondary pollution, the more important thing is to produce serious harm to people's health.So-called " gypsum rain " often can be seen in the downstream of chimney wind direction, or " blue smoke " of long cigarette tail arranged.Continuous development along with industry; The atmosphere combined pollutant is more and more serious to the harm that environment causes; The technology of combined pollutant still can not reach desirable effect in the existing removal flue gas, therefore very be necessary to probe into a kind of new, efficiently remove fine dust, SO
3The technology of combined pollutants such as acid mist reduces environmental pollution.
As the terminal fine processing equipment of atmosphere combined pollutant, wet electrical dust precipitator can be used for controlling the discharging of materials such as acid mist, fine dust, mercury, metal.As far back as 1907, wet electrical dust precipitator (WESP) technology just has been employed removed acid mist plumage cigarette, and along with the continuous development of technology, WESP constantly is generalized to a plurality of industrial circles.In the test that the coal-burning power plant uses, show that WESP can remove fine dust, the SO more than 90%
3Smog, and can reach the discharging of near-zero turbidity, the WESP technology can also be used to remove mercury, absorption portion SO in addition
2And HCl.Pressure drop is little, simple to operate, energy consumption is little because of having, movement-less part, maintenance cost are low, dust removal performance and high reliability features more and more receive people's attention as flue gas terminal fine processing equipment for WESP.
Summary of the invention
Problem to be solved by this invention just provides a kind of wet electrical dust precipitator, and is simple in structure, easy to use, efficiently removes fine particle and SO simultaneously
3Deng the aerosol that forms, alleviate equipment obstruction, chimney corrosion, can solve technical barriers such as " chimney rain ", " gypsum rain ", " blue smoke ", reach environmental requirement.
In order to solve the problems of the technologies described above; The present invention adopts following technical scheme: a kind of wet electrical dust precipitator; Comprise deduster body, at least two positive plates and at least one group of cathode frame; It is characterized in that: said deduster body vertically is provided with, and vertical parallel being located in the deduster body of positive plate vertically is provided with one group of cathode frame in twos between the positive plate.The deduster body vertically is provided with, and the positive plate flushing liquor following current in the wet electrical dust precipitator is downward, and is consistent with flue gas flow direction, is convenient to positive plate and collects the pollutant in the flue gas.
Further, said positive plate is a trapezoidal plate.The trapezoidal plate hypotenuse gradient is less, and plane width is bigger, so shower water even film forming on positive plate, and is easy to flushing.
Further, the width of the positive facial plane of said trapezoidal plate equates with the width of back side plane.
Further, said deduster body upper end is provided with the positive plate hanger, and deduster body lower end is provided with the positive plate bracing frame, and the positive plate upper end is fixed on the positive plate hanger, and the positive plate lower end is fixed on the positive plate bracing frame.Fixing robust.
Further, said deduster body upper end is provided with at least two nozzles, and nozzle is located at positive plate hanger top, and the distance between nozzle and the positive plate top is 1.0～2.0m, and the spacing of adjacent nozzle is 2～3 times of spacing of adjacent anode plate in twos in twos.Nozzle carries out intermittence spray, and the position of nozzle had both guaranteed less water consumption, guarantees that again positive plate is evenly wetting and rinses well.
Further, said deduster body upper end is provided with the negative electrode hanger, and the upper end of cathode frame is fixed on the negative electrode hanger.
Further, level is provided with some cathode line in the said cathode frame, and cathode line is the rectangular tube of band acupuncture, and the spacing of cathode line is 400mm～550mm in twos.Have lower discharge inception voltage like this, and can produce even and strong corona.
Further, said acupuncture penetrates rectangular tube and the rectangular tube two ends are symmetrical relatively, and acupuncture and flue gas flow direction are 30 °～45 ° angles.It is charged to be convenient to pollutant, improves efficiency of dust collection.
Further, said deduster body lower end is provided with end socket, is provided with at least one block of porous plate in the end socket, and the percent opening of porous plate is 30%～60%.Porous plate can guarantee to have the stable of air velocity distribution in the wet electrical dust precipitator of various types export structure.
After adopting technique scheme; The present invention has following advantage: flue gas flows in wet electrical dust precipitator from the top down; Flushing liquor following current on the positive plate is downward, and direction is consistent with flue gas flow direction, is convenient to positive plate and collects fine particle and aerosol in the flue gas; The design of nozzle location and intermittent spray thereof have reduced water consumption, and have guaranteed that positive plate is evenly wetting and rinse well; Realize efficiently removing of combined pollutant in the flue gas, reduced environmental pollution, satisfied the atmospheric emission standard that improves constantly.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described further:
Fig. 1 is the structural representation of an embodiment of the present invention;
Fig. 2 adopts the sketch map of trapezoidal plate for positive plate;
Fig. 3 is the cutaway view of cathode line;
Fig. 4 is the partial schematic diagram of cathode frame.
The specific embodiment
The structural representation of an embodiment of the present invention as shown in Figure 1; A kind of wet electrical dust precipitator; Comprise deduster body 1, at least two positive plates 2 and at least one group of cathode frames 3; Said deduster body vertically is provided with, and vertical parallel being located in the deduster body of positive plate vertically is provided with cathode frame in twos between the positive plate.In the present embodiment, be provided with positive plate hanger 11 in deduster body upper end, deduster body lower end is provided with positive plate bracing frame 12, and the positive plate upper end is fixed on the positive plate hanger, and the positive plate lower end is fixed on the positive plate bracing frame.Be provided with negative electrode hanger 13 in deduster body upper end, the upper end of cathode frame is fixed on the negative electrode hanger.Wherein, the negative electrode hanger is located at positive plate hanger top.Deduster body upper end is provided with at least two nozzles 4; Nozzle is located at positive plate hanger top, and the distance between nozzle and the positive plate top is 1.0～2.0m, preferred 1.0m; The spacing of adjacent nozzle is 2～3 times of spacing of adjacent anode plate in twos in twos, preferred 3 times.
As shown in Figure 2, positive plate is preferably trapezoidal plate, and the width of the positive facial plane 21 of preferred trapezoidal plate equates with the width of back side plane 22; Adopt trapezoidal plate; The trapezoidal hypotenuse gradient is less, and plane width is bigger, has guaranteed that the polar board surface film forming is even and has been easy to flushing.Level is provided with some cathode line in the cathode frame, and is as shown in Figure 3, and cathode line is the rectangular tube 32 of band acupuncture 31, and the spacing of cathode line is 400mm～550mm in twos, preferred 500mm; Acupuncture penetrates rectangular tube and the rectangular tube two ends are symmetrical relatively, and acupuncture and flue gas flow direction are 30 °～45 ° angles, preferred 30 °, 35 °, 40 ° or 45 °; Have lower discharge inception voltage like this and can produce even and strong corona.In addition, be provided with end socket 5 in deduster body lower end, be provided with at least one block of porous plate 6 in the end socket, the percent opening of porous plate is 30%～60%.Porous plate will prevent to stop up, and needs to adopt corrosion-resistant material.
In the foregoing description, the spacing of adjacent anode plate is 250mm～400mm in twos, preferred 250mm, 300mm, 350mm or 400mm, and such spacing makes positive plate be easy to collect fine particle and aerosol in the flue gas; The anode plate hight is 4～8m, preferred 4m, 6m or 8m.The flue gas flow rate scope is 3～10m/s in wet electrical dust precipitator of the present invention, preferred 3.5～5m/s.Wet electrical dust precipitator generally uses single-stage; To fine particle and aerocolloidal removal efficiency is 90～99%; When being provided with two to three grades, wet electrical dust precipitator is 99～99.99% to fine particle and aerosol removal efficiency, therefore is provided with usually and is no more than three grades.That the deduster body adopts is square, rectangle or circle, preferred rectangle.
Flue gas gets into wet electrical dust precipitator of the present invention from the top down, through the corona zone charged after, the face south pole plate motion of electrically charged pollutant, at the positive plate surface aggregation, positive plate carries out flushing at intermittence through flushing liquor, flushing liquor flows to and flows consistent with flue gas.Flushing liquor is delivered to nozzle through water pump with water, has guaranteed when the design of nozzle location reduces water consumption that positive plate is evenly wetting and rinses well.Flue gas gets into smoke discharging pipe after removing fine particle and the aerosol in the flue gas through wet electrical dust precipitator, finally realized efficiently removing of combined pollutant in the flue gas, reduced environmental pollution, satisfied the atmospheric emission standard that improves constantly.
Claims (9)
1. wet electrical dust precipitator; Comprise deduster body (1), at least two positive plates (2) and at least one group of cathode frame (3); It is characterized in that: said deduster body vertically is provided with, and vertical parallel being located in the deduster body of positive plate vertically is provided with one group of cathode frame in twos between the positive plate.
2. a kind of wet electrical dust precipitator according to claim 1 is characterized in that: said positive plate is a trapezoidal plate.
3. a kind of wet electrical dust precipitator according to claim 2 is characterized in that: the width of the positive facial plane (21) of said trapezoidal plate equates with the width of back side plane (22).
4. a kind of wet electrical dust precipitator according to claim 1; It is characterized in that: said deduster body upper end is provided with positive plate hanger (11); Deduster body lower end is provided with positive plate bracing frame (12); The positive plate upper end is fixed on the positive plate hanger, and the positive plate lower end is fixed on the positive plate bracing frame.
5. according to claim 1,3 or 4 described a kind of wet electrical dust precipitators; It is characterized in that: said deduster body upper end is provided with at least two nozzles (4); Nozzle is located at positive plate hanger top; Distance between nozzle and the positive plate top is 1.0～2.0m, and the spacing of adjacent nozzle is 2～3 times of spacing of adjacent anode plate in twos in twos.
6. according to claim 1 or 4 described a kind of wet electrical dust precipitators, it is characterized in that: said deduster body upper end is provided with negative electrode hanger (13), and the upper end of cathode frame is fixed on the negative electrode hanger.
7. a kind of wet electrical dust precipitator according to claim 6 is characterized in that: level is provided with some cathode line in the said cathode frame, and cathode line is the rectangular tube (32) of band acupuncture (31), and the spacing of cathode line is 400mm～550mm in twos.
8. a kind of wet electrical dust precipitator according to claim 7 is characterized in that: said acupuncture penetrates rectangular tube and the rectangular tube two ends are symmetrical relatively, and acupuncture and flue gas flow direction are 30 °～45 ° angles.
9. a kind of wet electrical dust precipitator according to claim 1 is characterized in that: said deduster body lower end is provided with end socket (5), is provided with at least one block of porous plate (6) in the end socket, and the percent opening of porous plate is 30%～60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103762395A CN102371211A (en) | 2011-11-23 | 2011-11-23 | Wet-type electric precipitator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103762395A CN102371211A (en) | 2011-11-23 | 2011-11-23 | Wet-type electric precipitator |
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| Publication Number | Publication Date |
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| CN102371211A true CN102371211A (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103762395A Pending CN102371211A (en) | 2011-11-23 | 2011-11-23 | Wet-type electric precipitator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106140479A (en) * | 2016-08-27 | 2016-11-23 | 山东神华山大能源环境有限公司 | Positive plate and a kind of wet electrical dust precipitator |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87204131U (en) * | 1987-04-15 | 1987-11-25 | 冶金工业部长沙黑色冶金矿山设计研究院 | Corona dust collector |
| JPH02307550A (en) * | 1989-05-22 | 1990-12-20 | Tadashi Yasutomi | Dry electric dust precipitator |
| CN2241018Y (en) * | 1995-07-31 | 1996-11-27 | 寿斌 | Electrostatic dust precipitator for mechanical shaft kiln |
| CN2577967Y (en) * | 2002-09-25 | 2003-10-08 | 高国纯 | Wet gas electric dust remover |
| CN201244515Y (en) * | 2008-05-22 | 2009-05-27 | 李志红 | Wet-type high-voltage electrostatic precipitation defroster |
| CN201260988Y (en) * | 2008-09-17 | 2009-06-24 | 赵焕新 | Circular tube needling discharging pole for electrostatic precipitator |
| CN202037076U (en) * | 2011-03-11 | 2011-11-16 | 石家庄虎林环保设备有限公司 | Plate cut for high-critical electric field |
| CN202398429U (en) * | 2011-11-23 | 2012-08-29 | 浙江菲达脱硫工程有限公司 | Wet-type electrical deduster |
-
2011
- 2011-11-23 CN CN2011103762395A patent/CN102371211A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87204131U (en) * | 1987-04-15 | 1987-11-25 | 冶金工业部长沙黑色冶金矿山设计研究院 | Corona dust collector |
| JPH02307550A (en) * | 1989-05-22 | 1990-12-20 | Tadashi Yasutomi | Dry electric dust precipitator |
| CN2241018Y (en) * | 1995-07-31 | 1996-11-27 | 寿斌 | Electrostatic dust precipitator for mechanical shaft kiln |
| CN2577967Y (en) * | 2002-09-25 | 2003-10-08 | 高国纯 | Wet gas electric dust remover |
| CN201244515Y (en) * | 2008-05-22 | 2009-05-27 | 李志红 | Wet-type high-voltage electrostatic precipitation defroster |
| CN201260988Y (en) * | 2008-09-17 | 2009-06-24 | 赵焕新 | Circular tube needling discharging pole for electrostatic precipitator |
| CN202037076U (en) * | 2011-03-11 | 2011-11-16 | 石家庄虎林环保设备有限公司 | Plate cut for high-critical electric field |
| CN202398429U (en) * | 2011-11-23 | 2012-08-29 | 浙江菲达脱硫工程有限公司 | Wet-type electrical deduster |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106140479A (en) * | 2016-08-27 | 2016-11-23 | 山东神华山大能源环境有限公司 | Positive plate and a kind of wet electrical dust precipitator |
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Application publication date: 20120314 |