CN104190544A - Dismountable smoke wet type electrostatic dust and fog removing device and application - Google Patents
Dismountable smoke wet type electrostatic dust and fog removing device and application Download PDFInfo
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- CN104190544A CN104190544A CN201410474785.6A CN201410474785A CN104190544A CN 104190544 A CN104190544 A CN 104190544A CN 201410474785 A CN201410474785 A CN 201410474785A CN 104190544 A CN104190544 A CN 104190544A
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- collecting plate
- discharge electrode
- flue gas
- wet
- dust collecting
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Abstract
The invention relates to a dismountable smoke wet type electrostatic dust and fog removing device and a method. The device comprises a casing (1), a dust collecting plate fixing sleeve pipe (2), a discharge electrode (3), a dust collecting plate (6), an ash washing water pipe (8) and a high-voltage direct-current power supply (9), wherein the dust collecting plate (6) is fixed in the casing (1) through the dust collecting plate fixing sleeve pipe (2), the discharge electrode (3) is connected with the high-voltage direct-current power supply, and the ash washing water pipe (8) is arranged above the dust collecting plate (6). The device can be used for effectively removing fine fog drops (including desulfurization gypsum fog drops) generated during washing by the wet method, primary fine particulate matters, aerosol particles formed by SO<3> or ammonium salt, and the like, and at the same time, heavy metal components such as Hg, AS and the like in air stream can also be effectively removed. Besides, as the device is operated according to actual conditions, a dust and fog removing unit in a regular hexagon structure formed embedding the fixing sleeve pipe into the dust collecting plate is adopted, the structure is simple and compact, and the area of the dust collecting plate in the unit space is about 30% greater than that of a common electrostatic dust removing device. Through the usage of the device, the discharge of fine particles and micro pollutants in the air stream reaches the ultra low standard, and the requirement of the environmental protection which is increasingly strict is satisfied.
Description
Technical field
The present invention relates to field of environment protection, especially relate to a kind of flue gas high-efficient wet-type electrostatic precipitation demister and application for gas cleaning.
Background technology
In recent years, " haze " phenomenon takes place frequently, residents ' health and ecological environment have been caused to serious impact, the public is also more and more higher to this concern, promoted thus the < < ambient air quality > > of the new revision of national issue, the dust emission standard that has simultaneously improved the industry such as coal-fired, metallurgical, this has higher requirement to gas cleaning.In existing smoke eliminator, if sack cleaner, electrostatic precipitator etc. are to the fine particle in flue gas and SO
3the clean-up effect of the pollutants such as acid mist is not ideal, and fine particle and SO
3the pollutants such as acid mist are again the main causes of initiation " haze ", therefore, how to improve their removal effect is polluted and had important meaning for control " haze ", and the new technology of the pollutants such as research efficient removal fine particle and acid mist is particularly urgent.
Wet cottrell receives increasing concern in recent years.Application in coal-burning power plant shows, wet electrical dust precipitator can be removed more than 90% PM2.5, more than 90% SO
3smog, almost can reach zero-emission.In addition wet cottrell can also be to mercury, NH
3effectively remove with pollutants such as HCl.Therefore, wet cottrell is the preferred unit that has become the comprehensive regulation of coal-fired flue-gas multi-pollutant.
In wet cottrell, the anion that fine particle and acid mist are discharged by corona discharge electrode is charged, and to collecting plate, moves rapidly under electric field action, then by the moisture film on collecting plate, is rinsed and takes away.But, traditional wet cottrell mainly has the following disadvantages: 1, wet cottrell generally adopts that plate and cathode line are staggered to be arranged in parallel, flat field space availability ratio is low, floor space is large, investment maintenance cost is high, and be prone to dead angle, make the skewness of gas, thereby reduced efficiency of dust collection; 2, on collecting plate, be difficult to form uniform moisture film, on collecting plate, easily form local dry cavity, produce local electrical resistance, cause the generation of anti-corona, and moisture film is excessive or too smallly all may affect supply voltage, cause voltage of electric field unstable, thereby reduce chargeability and the removal efficiency of fine particle or acid mist; 3, in the cathode line of wet cottrell, easily produce fouling phenomenon.Above deficiency, has reduced the removal efficiency of wet cottrell to pollutants such as fine particle and acid mists, has also restricted its application.
Summary of the invention
Object of the present invention is exactly to provide a kind of flue gas high-efficient wet-type electrostatic precipitation demister and application in order to overcome the defect of above-mentioned prior art existence.
Object of the present invention can be achieved through the following technical solutions: a kind of flue gas high-efficient wet-type electrostatic precipitation demister, it is characterized in that, comprise housing, collecting plate fixed sleeving, discharge electrode, collecting plate, punching ash water pipe and high-voltage DC power supply, described collecting plate is fixed in housing by collecting plate fixed sleeving, described discharge electrode connects high-voltage DC power supply, and the described grey water pipe that rushes is arranged on circuit board top.
Described collecting plate by collecting plate fixed muffle holddown groove inlaid-assembling together, forms a hexagonal exhaust gases passes; A plurality of hexagonal exhaust gases passes splicings are arranged in housing, in each exhaust gases passes, are equipped with discharge electrode.
Described discharge electrode is arranged on a discharge electrode sleeve, described discharge electrode sleeve is fixed on fixedly hanging stick of discharge electrode, and discharge electrode, discharge electrode sleeve and discharge electrode fixedly hanging stick link together and be vertically positioned over hexagonal exhaust gases passes center and link together with the discharge electrode fixed head on housing.
Described electric discharge is zigzag discharge electrode very, and its length is 300-500mm, welds 18 discharge electrodes on discharge electrode sleeve, and the angle between every discharge electrode is 20 degree, and the distance between discharge electrode tip and collecting plate is 150-300mm.
Described collecting plate material is stainless steel, and each collecting plate (6) bottom length of side that forms hexagonal exhaust gases passes is of a size of 400-1000mm, and length is no more than 1500mm.
Described high-voltage DC power supply connects discharge electrode, and its voltage range is 40kV-100kV.
An application for flue gas high-efficient wet-type electrostatic precipitation demister, is characterized in that, by flue gas high-efficient wet-type electrostatic precipitation demister, for flue gas ash removal demist, concrete grammar comprises the following steps:
The first step, flue gas enters in hexagonal exhaust gases passes;
Second step, the ion producing by electrode corona is charged by the fine particle in flue gas and acid mist, then under electric field action, to collecting plate, moves;
The 3rd step, utilizes and to rush grey water lines orientation and spray into a certain amount of water to collecting plate, and form continuous liquid film, and the fine particle on collecting plate and acid mist are assembled and formed drop and rinse from collecting plate;
The 4th step, the flow of liquor of collecting plate is collected to lower housing portion.
The temperature of described flue gas is within the scope of 100-300 ℃.
Described flue gas high-efficient wet-type electrostatic precipitation demister and wet desulphurization device be vertically connected on together with, described cleaning solution can enter in wet desulfurization system.
Compared with prior art, the present invention has following advantages:
1, the hexagon electrostatic precipitation demisting unit that the present invention adopts can be assembled, splice according to the true form of housing 1 and size, compare with traditional flat electric field of electrostatic precipitation that to have collecting plate area larger, the advantages such as structure is compacter, and occupation of land space is less.
The present invention can use separately by flue gas degree of depth dedusting demister, and desulfurization fume end dedusting demist is carried out in the upper end that also can be directly installed on wet desulphurization.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of high-efficient wet-type electrostatic precipitation demister of the present invention;
Fig. 2 is the composite assembly schematic diagram of electrostatic precipitation demisting unit of the present invention in housing;
Fig. 3 is electrostatic precipitation demisting unit discharge electrode device schematic diagram.
1, housing; 2, collecting plate fixed sleeving; 3, discharge electrode; 4, discharge electrode sleeve; 5, the fixing hanging stick of discharge electrode; 6, collecting plate; 7, discharge electrode fixed head; 8, rush grey water lines; 9, high-voltage DC power supply.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is further described.The present embodiment is implemented under with technical solution of the present invention prerequisite, has provided detailed embodiment and specific operation process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, a kind of flue gas high-efficient wet-type electrostatic precipitation demister, comprise housing 1, electrostatic precipitation demisting unit, discharge electrode fixed head 7, rush grey water pipe 8 and high-voltage DC power supply 9, wherein electrostatic precipitation demisting unit comprises by six collecting plates 6 and utilizes composite assembly mode to form regular hexagon tube structure, as exhaust gases passes, each collecting plate 6 intersections are arranged in collecting plate fixed sleeving 2, in passage, be provided with discharge cell, discharge cell comprises discharge electrode 3, discharge electrode sleeve 4 and discharge electrode be hanging stick 5 fixedly, described electrode 3 is arranged on discharge electrode sleeve 4, described discharge electrode sleeve 4 is fixed on fixedly hanging stick 5 of discharge electrode, discharge electrode 3, discharge electrode sleeve 4 and discharge electrode fixedly hanging stick 5 link together and are vertically positioned over hexagonal exhaust gases passes center and link together with the discharge electrode fixed head 7 on housing 1.
As Figure 2-3.Described discharge electrode (3) is zigzag discharge electrode, and its length is 300-500mm, welds 18 discharge electrodes on discharge electrode sleeve 4, and the angle between every discharge electrode is 20 degree, and the distance between discharge electrode tip and collecting plate is 150-300mm.Described collecting plate 6 materials are stainless steel, and each collecting plate 6 bottom length of sides that form hexagonal exhaust gases passes are of a size of 400-1000mm, and length is no more than 1500mm.As shown in Figure 2.Described discharge electrode 3 connects high-voltage DC power supply, and the described grey water pipe 8 that rushes is arranged on circuit board 6 tops, and wet scrubbing and electrostatic precipitation unit are organically combined, and forms high-efficient wet-type electrostatic precipitation demister.Described high-voltage DC power supply 10 connects discharge electrode 3, and its voltage range is 40kV-100kV.
According to the size of housing 1, select the be stitched together exhaust gases passes of formed honeycomb shape of a plurality of electrostatic precipitation demisting unit.
An application for flue gas high-efficient wet-type electrostatic precipitation demister, by flue gas high-efficient wet-type electrostatic precipitation demister, for flue gas ash removal demist, concrete grammar comprises the following steps:
The first step, flue gas enters in hexagonal exhaust gases passes;
Second step, the ion producing by electrode corona is charged by the fine particle in flue gas and acid mist, then under electric field action, to collecting plate, moves;
The 3rd step, utilizes and to rush grey water lines orientation and spray into a certain amount of water to collecting plate, and form continuous liquid film, and the fine particle on collecting plate and acid mist are assembled and formed drop and rinse from collecting plate;
The 4th step, the flow of liquor of collecting plate is collected to lower housing portion.
The temperature of described flue gas is within the scope of 100-300 ℃.
Described flue gas high-efficient wet-type electrostatic precipitation demister and wet desulphurization device be vertically connected on together with, described cleaning solution can enter in wet desulfurization system.
Specific embodiment is as follows:
Embodiment 1
Utilize the hexagon stainless steel cylinder that a length of side is 400mm, by building detachable flue gas wet static dedusting demister shown in Fig. 1 as experimental rig.Testing exhaust gas volumn used is 150m
3/ h, flue-gas temperature is 120 ℃, inlet flue gas SO
3concentration is 60mg/Nm
3, smoke content 1600mg/Nm
3.Do not executing in alive situation the SO recording
3removal efficiency is about 30%, and efficiency of dust collection is 32%.Then, electrostatic potential is adjusted to 40kV, the SO recording
3removal efficiency is about 57%, and efficiency of dust collection is 66%.
Embodiment 2
The coal-burning boiler that is 10t/h for 1 Coal-fired capacity, design exhaust gas volumn is 20000Nm
3/ h, flue-gas temperature is 140 ℃, smoke eliminator comprises detachable flue gas wet static dedusting demister and wet desulfurizing process.Apparatus of the present invention have adopted the device shown in Fig. 1 according to actual condition, a detachable flue gas wet static dedusting demister has been installed in the upper end of wet desulfuration tower exhanst gas outlet, and the hexagon electrostatic precipitation demisting unit that this device is 500mm by 7 length of sides combines.After dedusting and sulfur removal technology, enter the flue gas SO of detachable flue gas wet static dedusting demister
3concentration is 100mg/Nm
3, smoke content 800mg/Nm
3.When not applying voltage, the SO that detachable flue gas wet static dedusting demister device outlet records
3removal efficiency is 35%, and efficiency of dust collection is 40%.By discharge electrode voltage-regulation during to 60kV, SO
3removal efficiency is 75%, and efficiency of dust collection is 82%.By voltage-regulation during to 80kV, SO
3removal efficiency is 86%, and efficiency of dust collection is 94%.
Claims (9)
1. a detachable flue gas wet static dedusting demister, it is characterized in that, comprise housing (1), collecting plate fixed sleeving (2), discharge electrode (3), collecting plate (6), rush grey water pipe (8) and high-voltage DC power supply (9), described collecting plate (6) is fixed in housing (1) by collecting plate fixed sleeving (2), described discharge electrode (3) connects high-voltage DC power supply, and the described grey water pipe (8) that rushes is arranged on circuit board (6) top.
2. a kind of detachable flue gas wet static dedusting demister according to claim 1, it is characterized in that, described collecting plate (6) by collecting plate fixed muffle (2) holddown groove inlaid-assembling together, forms a hexagonal exhaust gases passes; A plurality of hexagonal exhaust gases passes splicings are arranged in housing (1), are equipped with discharge electrode (3) in each exhaust gases passes.
3. a kind of detachable flue gas wet static dedusting demister according to claim 2, it is characterized in that, described discharge electrode (3) is arranged on a discharge electrode sleeve (4), described discharge electrode sleeve (4) is fixed on fixedly hanging stick (5) of discharge electrode, and discharge electrode (3), discharge electrode sleeve (4) and discharge electrode fixedly hanging stick (5) link together and be vertically positioned over hexagonal exhaust gases passes center and link together with the discharge electrode fixed head (7) on housing (1).
4. a kind of detachable flue gas wet static dedusting demister according to claim 3, it is characterized in that, described discharge electrode (3) is zigzag discharge electrode, its length is 300-500mm, 18 discharge electrodes of the upper welding of discharge electrode sleeve (4), angle between every discharge electrode is 20 degree, and the distance between discharge electrode tip and collecting plate is 150-300mm.
5. a kind of detachable flue gas wet static dedusting demister according to claim 2, it is characterized in that, described collecting plate (6) material is stainless steel, each collecting plate (6) bottom length of side that forms hexagonal exhaust gases passes is of a size of 400-1000mm, and length is no more than 1500mm.
6. a kind of detachable flue gas wet static dedusting demister according to claim 2, is characterized in that, described high-voltage DC power supply (10) connects discharge electrode (3), and its voltage range is 40kV-100kV.
7. an application for the detachable flue gas wet static dedusting demister as described in as arbitrary in claim 1-6, is characterized in that, by flue gas high-efficient wet-type electrostatic precipitation demister, for flue gas ash removal demist, concrete grammar comprises the following steps:
The first step, flue gas enters in hexagonal exhaust gases passes;
Second step, the ion producing by electrode corona is charged by the fine particle in flue gas and acid mist, then under electric field action, to collecting plate, moves;
The 3rd step, utilizes and to rush grey water lines orientation and spray into a certain amount of water to collecting plate, and form continuous liquid film, and the fine particle on collecting plate and acid mist are assembled and formed drop and rinse from collecting plate;
The 4th step, the flow of liquor of collecting plate is collected to lower housing portion.
8. the application of detachable flue gas wet static dedusting demister according to claim 7, is characterized in that, the temperature of described flue gas is within the scope of 100-300 ℃.
9. the application of detachable flue gas wet static dedusting demister according to claim 7, it is characterized in that, described flue gas high-efficient wet-type electrostatic precipitation demister and wet desulphurization device be vertically connected on together with, described cleaning solution can enter in wet desulfurization system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410474785.6A CN104190544A (en) | 2014-09-17 | 2014-09-17 | Dismountable smoke wet type electrostatic dust and fog removing device and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410474785.6A CN104190544A (en) | 2014-09-17 | 2014-09-17 | Dismountable smoke wet type electrostatic dust and fog removing device and application |
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| Publication Number | Publication Date |
|---|---|
| CN104190544A true CN104190544A (en) | 2014-12-10 |
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ID=52075991
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410474785.6A Pending CN104190544A (en) | 2014-09-17 | 2014-09-17 | Dismountable smoke wet type electrostatic dust and fog removing device and application |
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| CN (1) | CN104190544A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470027A (en) * | 2017-08-23 | 2017-12-15 | 广州熠森能环保科技有限公司 | Function modoularization exhaust gas cleaner and domestic garbage disposer |
| CN109078445A (en) * | 2018-10-21 | 2018-12-25 | 山东盛宝传热科技有限公司 | Flue gas ash removal takes off white integrated apparatus |
| CN109365134A (en) * | 2018-10-18 | 2019-02-22 | 西安西热锅炉环保工程有限公司 | The autocontrol method of dust pelletizing system in a kind of coal generating system |
| CN109365135A (en) * | 2018-10-18 | 2019-02-22 | 华能辛店发电有限公司 | A kind of thermal power plant's dust pelletizing system intelligent power saving autocontrol method |
| CN115228242A (en) * | 2022-07-23 | 2022-10-25 | 中山市格源环保设备有限公司 | Aluminum product paint spraying organic waste gas treatment system and flue gas purification method thereof |
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| CN103111371A (en) * | 2013-01-30 | 2013-05-22 | 北京思源通能科技发展有限公司 | Electrostatic dust collection device of thermal power plant and installation method of device |
| CN103949348A (en) * | 2014-04-30 | 2014-07-30 | 南通亚泰船舶工程有限公司 | Dust collector anode plate group, dust collector anode plate group module, dust collector anode plate group system and module installation method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470027A (en) * | 2017-08-23 | 2017-12-15 | 广州熠森能环保科技有限公司 | Function modoularization exhaust gas cleaner and domestic garbage disposer |
| CN109365134A (en) * | 2018-10-18 | 2019-02-22 | 西安西热锅炉环保工程有限公司 | The autocontrol method of dust pelletizing system in a kind of coal generating system |
| CN109365135A (en) * | 2018-10-18 | 2019-02-22 | 华能辛店发电有限公司 | A kind of thermal power plant's dust pelletizing system intelligent power saving autocontrol method |
| CN109365134B (en) * | 2018-10-18 | 2020-05-05 | 西安西热锅炉环保工程有限公司 | Automatic control method of dust removal system in coal-fired power generation system |
| CN109078445A (en) * | 2018-10-21 | 2018-12-25 | 山东盛宝传热科技有限公司 | Flue gas ash removal takes off white integrated apparatus |
| CN115228242A (en) * | 2022-07-23 | 2022-10-25 | 中山市格源环保设备有限公司 | Aluminum product paint spraying organic waste gas treatment system and flue gas purification method thereof |
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Application publication date: 20141210 |