CN204170849U - A kind of vertical current wet electrical dust precipitator water conservancy diversion and choked flow coupled structure - Google Patents
A kind of vertical current wet electrical dust precipitator water conservancy diversion and choked flow coupled structure Download PDFInfo
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- CN204170849U CN204170849U CN201420521381.3U CN201420521381U CN204170849U CN 204170849 U CN204170849 U CN 204170849U CN 201420521381 U CN201420521381 U CN 201420521381U CN 204170849 U CN204170849 U CN 204170849U
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Abstract
The utility model relates to a kind of vertical current wet electrical dust precipitator water conservancy diversion and choked flow coupled structure, arranges the restricted baffle of some layers of level between the tower wall and positive plate of vertical current wet electrical dust precipitator, and the gap plugging between tower wall and positive plate is lived by restricted baffle; Vertical current wet electrical dust precipitator has fume side smoke outlet flue structure, in the altitude range that its fume side exports, arranges one group of deflector, deflector has water conservancy diversion bent angle, one group of deflector is fixedly connected with Ta Bi, and slant stack is arranged, has turned to guiding function to flue gas.The flue gas that the utility model can reduce vertical current wet electrical dust precipitator is escaped, and promotes the effect of flue gas even distribution in wet electrical dust precipitator, thus improves the efficiency of electric cleaner dedusting; Deflector and spoiler combining structure, efficient coupling is worked in coordination with, and have employed water conservancy diversion, the flowing of choked flow alter and regulates the effect of fluid resistance, optimizing flow field; The systems approach of simultaneously also being worked in coordination with by percussion flow structure, coupling improves synergy.
Description
Technical field
The utility model relates to a kind of vertical current wet electrical dust precipitator water conservancy diversion and choked flow coupled structure, belongs to wet-esp technical field.
Background technology
The area that China various places affect by gray haze is increased gradually, and gray haze number of days increases, and the harm of PM2.5 particle has badly influenced daily life, and the improvement that PM2.5 pollutes is very urgent.The main source of China PM2.5 is thermal power generation, industrial production, motor vehicle exhaust emission etc.Present stage China 90% electric energy from thermal power generation, and thermal power generation needs to burn a large amount of coal, can produce a large amount of pollutants in coal burning process.
Along with the raising of people's environmental consciousness, country becomes pay attention to day by day to the discharge of firepower coal-burning power plant and the combined pollutant such as Industrial Boiler fine particle (comprising PM2.5 dust, SO3 acid mist and aerosol etc.), heavy metal Hg, VOC, to the discharge standard of these pollutants and require also will be more and more stricter.At present, most of domestic coal fired power plant adopts Limestone-gypsum Wet Flue Gas Desulfurization Process technique, this technique due to flue gas exhaust gas temperature low, easy generation chimney SO3 corrodes, acid rain, " gypsum rain " phenomenon, if carry out oven dry to tail gas to detect before its solids discharge thing known compares absorption tower and go up not down, cause granular material discharged exceeding standard, simultaneously the pollutant that exists with aerosol form such as fine flue dust PM2.5, mercury, SO3 is also along with flue gas after desulfurization enters air.
Realizing the advanced purification technology of flue dust for solving this problem, need consider to set up wet electrical dust precipitator after desulfurizing tower.Wet electrical dust precipitator can remove the harmful substance such as dirt, acid mist, water droplet, aerosol, PM2.5 in flue gas, is the effective equipment administering atmospheric dust pollution.Be with a wide range of applications in coal-burning power plant and the field such as chemical industry, metallurgy, will huge economical, societal benefits be produced.
Vertical current wet electrical dust precipitator is the one of wet electrical dust precipitator, and its structure is that electric cleaner inner anode plate adopts the positive plate control of dust face arrangement that replace parallel with cathode line with cathode line, and positive plate is vertically placed consistent with flue gas circulating direction.In electric field section because the electric discharge of cathode line, after the PM2.5 fine dust, aerosol etc. that contain are charged under the effect of electric field force, trapped by positive plate in flue gas, but as shown in Figure 8,9, conventional vertical current wet electrical dust precipitator is the electric discharge safety ensureing cathode line and tower wall, not arranging cathode line and positive plate around tower wall, having small part unavoidably and not gathering dust in scope at electric field near the region of tower wall, the wet electrical dust precipitator of vertical current simultaneously, positive plate is vertically placed consistent with flue gas circulating direction, ensure that electric field efficiency of dust collection is high, then in electric field from the inlet to the outlet section flue gas stream distribution all more even, and vertical current wet electrical dust precipitator mostly is and desulfurizing tower one layout, for ensureing that smoke outlet air-flow can not have an impact to bottom electric field section air flow method, general employing flue gas ejecting structure wet electrical dust precipitator, as shown in Figure 8, but electric precipitation is arranged on desulfurizing tower in tower, original tower body height is just higher, therefore for reducing whole height, deduster section flue outlet can adopt side to go out structure, as shown in Figure 9.The flue that side goes out structure can reduce tower body whole height, and from structure or make and be all preferable over ejecting structure, but the flue that side goes out structure can produce flue gas bias current effect, makes the flue gas stream distribution of deduster electric field exit portion region poor.
Utility model content
The utility model, for ensureing and provide the efficiency of electric precipitation, is optimized the structure of vertical current wet electrical dust precipitator near the region of tower wall, is intended to avoid and reduce flue gas disengaging electric field and spills; Meanwhile, flue vertical current wet electrical dust precipitator side being gone out to structure is optimized, and to improve the airflow uniform distribution effect in electric cleaner exit, thus ensures efficiency of dust collection.
The utility model proposes a kind of vertical current wet electrical dust precipitator water conservancy diversion and choked flow coupled structure for above vertical current wet electrical dust precipitator, solves the problem that flue gas is escaped and smoke distribution is uneven that vertical current wet electrical dust precipitator exists.
The utility model takes following technical scheme:
A kind of vertical current wet electrical dust precipitator water conservancy diversion and choked flow coupled structure, arrange the restricted baffle 4 of some layers of level between the tower wall and positive plate of vertical current wet electrical dust precipitator, and the gap plugging between tower wall and positive plate is lived by described restricted baffle 4; Described vertical current wet electrical dust precipitator has fume side smoke outlet flue structure, in the altitude range of its fume side outlet 3, arranges one group of deflector 6, described deflector 6 has water conservancy diversion bent angle 601, one group of deflector 6 is fixedly connected with Ta Bi, and slant stack is arranged, has turned to guiding function to flue gas.
The feature of the technical program is: when flue gas flows through the gap between tower wall and positive plate, meet the obstruct of spoiler 4, form effective backflow, thus incoming flow flue gas is caught up with into electric field, in the vertical direction be arranged in parallel multiple spoiler 4, thus form the backflow of repeatedly form like this, strengthen the effect of smoke backflow, thus reduce flue gas escape, lifting efficiency of dust collection; After flue gas upwards flows out electric field region, need to turn to, flow out to side, the setting of multilayer deflector 6, reduces the bias current of electric cleaner outlet side smoke outlet flue flue gas, thus promotes airflow uniform distribution effect in electric cleaner, improves efficiency of dust collection.The reducing-flow structure of flue gas and flow-guiding structure are defined good coupling by the technical program, define a set of perfect flue gas guide frame, achieve the complex optimum of wet electrical dust precipitator interior flow field.
Further, also comprise water conservancy diversion ring flat-plate 5, described water conservancy diversion ring flat-plate 5 is arranged between smoke inlet 1 and electric field region, and is fixedly connected with tower wall, and tower wall is corresponding with the width of the gap width between positive plate and water conservancy diversion ring flat-plate 5.
Further, when the number of plies of restricted baffle 4 is greater than three layers, some layers of restricted baffle 4 equidistant placement.
Further, when the number of plies of restricted baffle 4 equals three layers, some layers of restricted baffle 4 reduce along airflow direction spacing.
Further, described water conservancy diversion ring flat-plate 5 is horizontal water conservancy diversion ring flat-plate 501, one of water conservancy diversion ring flat-plate 502 with angle and triangle water conservancy diversion ring flat-plate 503.
Further, the cylindrical or square tube shape of the main body of described vertical current wet electrical dust precipitator.
The beneficial effects of the utility model are:
1) reduce the short stream of flue gas in electric cleaner, thus reduce flue gas escape amount, improve efficiency of dust collection.The multilayer restricted baffle that the utility model is arranged in electric field section or entrance guiding plate add multilayer restricted baffle, can make flue gas in electric field section, be formed with the backflow of effect near tower wall flue gas escape region, the flue gas of backflow occupies tower wall flue gas and may to escape region, thus incoming flow flue gas is caught up with into electric field, reduce incoming flow flue gas and enter this region, thus reduce flue gas escape lifting efficiency of dust collection;
2) weaken flue gas bias current, improve the effect of airflow uniform distribution in electric cleaner, thus improve the efficiency of dedusting.The utility model is provided with multilayer deflector in the smoke outlet flue of electric cleaner side, reduces the bias current of electric cleaner outlet side smoke outlet flue flue gas, thus promotes airflow uniform distribution effect in electric cleaner, improves efficiency of dust collection.
3) provide a kind of vertical current wet electrical dust precipitator water conservancy diversion and choked flow coupled structure, the flue gas that can reduce vertical current wet electrical dust precipitator is escaped, and promotes the effect of flue gas even distribution in wet electrical dust precipitator, thus improves the efficiency of electric cleaner dedusting.Deflector in the utility model and spoiler combining structure, efficient coupling is worked in coordination with, and have employed water conservancy diversion, the flowing of choked flow alter and regulates the effect of fluid resistance, optimizing flow field; The systems approach of simultaneously also being worked in coordination with by percussion flow structure, coupling improves synergy.
4) deflector and spoiler define a kind of structure of percussion flow, and deflector plays the effect forming multiple impact stream.
Accompanying drawing explanation
Fig. 1 is the electric cleaner elevation containing multilayer air-flow restricted baffle.
Fig. 2 is the level cross-sectionn figure of electric field region in Fig. 1.
Fig. 3 is the square electric deduster electric field level sectional top view of gassiness stream restricted baffle.
Fig. 4 is the circular Electric Field in ESP inlet water plane section top view containing water conservancy diversion ring flat-plate.
Fig. 5 is the combining structure schematic diagram of water conservancy diversion ring flat-plate and restricted baffle.
Fig. 6 is the schematic diagram of the water conservancy diversion ring flat-plate of different structure.
Fig. 7 is the electric cleaner elevation containing multilayer air-flow restricted baffle and air flow guiding plate.
Fig. 8 is the structural representation of the flue gas ejecting structure wet electrical dust precipitator of prior art.
Fig. 9 is the wet electrical dust precipitator that the fume side of prior art goes out structure.
In figure, 1-smoke inlet; 2-electric field section; The smoke outlet flue outlet of 3-side; 4-restricted baffle; 5-water conservancy diversion ring flat-plate; 501-horizontal water conservancy diversion ring flat-plate; 502-water conservancy diversion ring flat-plate with angle; 503-triangle water conservancy diversion ring flat-plate; 6-deflector; 601-water conservancy diversion bent angle; 7-positive plate; 8-flue gas escape region.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
Embodiment one:
As shown in figs. 1-7, a kind of vertical current wet electrical dust precipitator, comprising: smoke inlet 1, electric field section 2, and side smoke outlet flue outlet 3, wherein comprises multilayer air-flow restricted baffle 4 in electric field section 2, is provided with multilayer deflector 6 in side smoke outlet flue outlet 3.
Flue gas enters after in electric cleaner from smoke inlet 1, due to the plugging action of multilayer restricted baffle 4, flue gas near tower wall is pushed back in electric field, cannot escape from these regions, partial fume forms backflow in dividing plate shutoff in Ta Bi region simultaneously, occupy this subregion, allow the flue gas of incoming flow cannot enter this region, the effective escape reducing flue gas; Flue gas, by after electric field, enters the vertex of a cone, by the guide functions of deflector 6, flue gas is distributed in side smoke outlet flue 3 more uniformly, thus it is too high to reduce smoke outlet flue 3 subregion, side flue gas flow rate, reduces side smoke outlet flue and exports 3 crushings; Last flue gas is discharged from side smoke outlet flue outlet 3.
Restricted baffle in the present embodiment can arrange multilayer; Electric cleaner body in the present embodiment can adopt circle or rectangular configuration; Restricted baffle 4 structure of circular configuration and rectangular configuration electric cleaner respectively as shown in Figure 2,3.
In the present embodiment, electric field section is provided with multilayer air-flow restricted baffle from top to bottom near Ta Bi region, when multilayer arranges and is greater than 3 layers, can consider equidistant setting; Consider that Unequal distance is arranged when equaling 3 layers, reduce along airflow direction spacing; The restricted baffle 4 at electric field entrance 1 place can adopt water conservancy diversion ring flat-plate 5 to replace, and the flue gas that can effectively control equally near tower wall place is escaped; As shown in Figure 4,5, 6, restricted baffle 5 can adopt the horizontal water conservancy diversion ring flat-plate 501 in Fig. 6, water conservancy diversion ring flat-plate 502 with angle and triangle water conservancy diversion ring flat-plate 503 to the structure of water conservancy diversion ring flat-plate 5.
For weakening flue gas bias current effect in electric cleaner, described side smoke outlet flue outlet in be provided with multilayer deflector 6, make smoke distribution in electric cleaner evenly; Multilayer deflector 6, can adopt arc and flat sheet combination or flat board, arc and flat sheet combination or dull and stereotyped and flat sheet combination.
Described deflector 6 and spoiler 4 can be used as percussion flow structure, and deflector plays the effect of multiple impact stream.
Embodiment of the present utility model can also have the expansion of other various ways, and the scope equivalence that protection domain of the present utility model and claims limit is defined.
Claims (6)
1. vertical current wet electrical dust precipitator water conservancy diversion and a choked flow coupled structure, is characterized in that:
Between the tower wall and positive plate of vertical current wet electrical dust precipitator, arrange the restricted baffle (4) of some layers of level, the gap plugging between tower wall and positive plate is lived by described restricted baffle (4);
Described vertical current wet electrical dust precipitator has fume side smoke outlet flue structure, in the altitude range of its fume side outlet (3), arrange one group of deflector (6), described deflector (6) has water conservancy diversion bent angle (601), one group of deflector (6) is fixedly connected with tower wall, and slant stack is arranged, has turned to guiding function to flue gas.
2. vertical current wet electrical dust precipitator water conservancy diversion as claimed in claim 1 and choked flow coupled structure, it is characterized in that: also comprise water conservancy diversion ring flat-plate (5), described water conservancy diversion ring flat-plate (5) is arranged between smoke inlet (1) and electric field region, and be fixedly connected with tower wall, tower wall is corresponding with the width of the gap width water conservancy diversion ring flat-plate (5) between positive plate.
3. vertical current wet electrical dust precipitator water conservancy diversion as claimed in claim 1 and choked flow coupled structure, is characterized in that: when the number of plies of restricted baffle (4) is greater than three layers, some layers of restricted baffle (4) equidistant placement.
4. vertical current wet electrical dust precipitator water conservancy diversion as claimed in claim 1 and choked flow coupled structure, it is characterized in that: when the number of plies of restricted baffle (4) equals three layers, some layers of restricted baffle (4) are reduced along airflow direction spacing.
5. vertical current wet electrical dust precipitator water conservancy diversion as claimed in claim 2 and choked flow coupled structure, is characterized in that: described water conservancy diversion ring flat-plate (5) is horizontal water conservancy diversion ring flat-plate (501), one of water conservancy diversion ring flat-plate (502) and triangle water conservancy diversion ring flat-plate (503) with angle.
6. vertical current wet electrical dust precipitator water conservancy diversion as claimed in claim 1 and choked flow coupled structure, is characterized in that: the cylindrical or square tube shape of the main body of described vertical current wet electrical dust precipitator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420521381.3U CN204170849U (en) | 2014-09-11 | 2014-09-11 | A kind of vertical current wet electrical dust precipitator water conservancy diversion and choked flow coupled structure |
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| CN201420521381.3U CN204170849U (en) | 2014-09-11 | 2014-09-11 | A kind of vertical current wet electrical dust precipitator water conservancy diversion and choked flow coupled structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104324809A (en) * | 2014-09-11 | 2015-02-04 | 上海龙净环保科技工程有限公司 | Vertical flow wet electric precipitator diversion and choke coupling structure |
| CN108772198A (en) * | 2018-06-07 | 2018-11-09 | 许玉蕊 | Exhaust building with air-cleaning function |
| CN114985109A (en) * | 2022-07-03 | 2022-09-02 | 中国重型机械研究院股份公司 | Lower air inlet flow uniform distribution device of vertical cylindrical wet-type electric precipitator |
-
2014
- 2014-09-11 CN CN201420521381.3U patent/CN204170849U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104324809A (en) * | 2014-09-11 | 2015-02-04 | 上海龙净环保科技工程有限公司 | Vertical flow wet electric precipitator diversion and choke coupling structure |
| CN108772198A (en) * | 2018-06-07 | 2018-11-09 | 许玉蕊 | Exhaust building with air-cleaning function |
| CN108772198B (en) * | 2018-06-07 | 2020-09-04 | 刘金波 | Exhaust building with air purification function |
| CN114985109A (en) * | 2022-07-03 | 2022-09-02 | 中国重型机械研究院股份公司 | Lower air inlet flow uniform distribution device of vertical cylindrical wet-type electric precipitator |
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