CN203556465U - Wet electrostatic dust remover - Google Patents
Wet electrostatic dust remover Download PDFInfo
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- CN203556465U CN203556465U CN201320677000.6U CN201320677000U CN203556465U CN 203556465 U CN203556465 U CN 203556465U CN 201320677000 U CN201320677000 U CN 201320677000U CN 203556465 U CN203556465 U CN 203556465U
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- polar plate
- collecting polar
- wet cottrell
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Abstract
The utility model discloses a wet electrostatic dust remover. The wet electrostatic dust remover comprises a shell body, a first dust collection electrode plate row, a first discharge electrode wire row, a gas inlet, a gas outlet and a washing water pipe, wherein the first dust collection electrode plate row and the first discharge electrode wire row are located in the shell body, the gas inlet and the gas outlet are formed in the shell body, the washing water pipe is arranged at the top of the first dust collection electrode plate row, the axis direction of the washing water pipe is parallel to the flowing direction of fume, and a plurality of water spraying holes, facing to the first dust collection electrode plate row, are formed in the washing water pipe. Washing water sprayed out of the water spraying holes of the washing water pipe forms uniform water which flows from top to bottom along dust collection electrode plates, and dust can be excellently washed from the dust collection electrode plates by the uniform water. According to the wet electrostatic dust remover, the fume is not humidified before entering an electric field, so that the occurrence of corona closing is reduced; meanwhile, the uniformity of the water on the dust collection electrode plates can be guaranteed, so that the efficiency of washing is increased, and then, the dust removal efficiency is increased.
Description
Technical field
The utility model relates to electrostatic precipitation technology field, more particularly, relates to a kind of wet cottrell.
Background technology
The dust removal process of general wet cottrell is as follows:
(1) high voltage from high voltage source is applied on corona wire, and corona wire produces corona discharge, and forms electrostatic field;
(2) dust of flowing through in the flue gas of electric field, the Ion Charged being produced by corona discharge;
(3) charged dust, under electric field force effect, is collected on collecting polar plate;
(4) dust being collected on collecting polar plate is washed away by current.
At the flue gas for the treatment of dedusting, enter before electric field, conventionally will make the moisture in flue gas increase, and make moisture in the flue gas state that reaches capacity.The object of doing is like this in order to prevent the water evaporation on collecting polar plate, water evaporation meeting forms the region of local desiccation and makes the study of water film distribution on pole plate inhomogeneous on pole plate, thereby be unfavorable for the flushing of collecting polar plate, and then affect the efficiency of dust collection of wet cottrell.
But, if the large phenomenon that just easily produces corona blocking of the water vapour content of flue gas in electric field.Because the ionic mobility of the charged H2O molecule in gas is lower, its numerical value only has 50% left and right of charged air, so the movement velocity under the effect of electric field force is lower than other gas ingredients, will reduce like this secondary current value of electric field, easily produce the phenomenon of corona blocking.
Therefore, how to design a kind of wet cottrell, this wet cottrell does not carry out humidification to the flue gas entering before electric field, thereby reduces the generation of corona blocking; Can ensure the uniformity of current on collecting polar plate again, improve the efficiency of rinsing, and then improve efficiency of dust collection, be those skilled in the art's critical problems urgently to be resolved hurrily simultaneously.
Utility model content
The purpose of this utility model is to provide a kind of wet cottrell, and this wet cottrell does not carry out humidification to the flue gas entering before electric field, thereby reduces the generation of corona blocking; Can ensure the uniformity of current on collecting polar plate again, improve the efficiency of rinsing, and then improve efficiency of dust collection simultaneously.
For achieving the above object, the utility model provides following technical scheme:
A wet cottrell, comprises housing, is positioned at the first collecting polar plate row and the first discharge plume row of described housing, is opened in air inlet and gas outlet on described housing,
Also comprise the wash tub pipe that is arranged at described the first collecting polar plate row top, the axis direction of this wash tub pipe is parallel with the flow direction of flue gas, offers some hole for water sprayings towards described the first collecting polar plate row on this wash tub pipe.
Preferably, the diameter of described hole for water spraying is 2.5mm-3.5mm.
Preferably, described the first collecting polar plate row is Ra6.3-Ra12.5 near the roughness of one end of described wash tub pipe.
Preferably, also comprise that the first flushing water of being communicated with described wash tub pipe is from stable-pressure device.
Preferably, the electric pressure for described the first discharge plume is arranged the power supply of power supply, apart from calculating, is not less than 4kV/cm by heteropole, and the current class of this power supply calculates by pole plate specific collection area, is not less than 0.6mA/m2.
Preferably, also comprise and be arranged at described housing bottom, for collecting the sewage collecting bucket of sewage.
Preferably, near described air inlet, be provided with air inlet airflow uniform distribution plate, near described gas outlet, be provided with gas outlet airflow uniform distribution plate.
Preferably, along the flow direction of flue gas, also comprise the second collecting polar plate row and the second discharge plume row that are positioned at described the first collecting polar plate row downstream, described the first discharge plume row is powered by high frequency electric source, and described the second discharge plume row is powered by the pulse power.
Preferably, also comprise that the second flushing water of being arranged at the flushing water shower nozzle of described the second collecting polar plate row top and being communicated with this flushing water shower nozzle is from stable-pressure device.
Preferably, also comprise the detector for detection of described the first collecting polar plate row's pole plate electric current; Receive the pole plate current value that described detector detects, and according to pole plate current value, control the controller of the basic voltage size of the described pulse power.
From technique scheme, can find out, flushing water from the hole for water spraying ejection of wash tub pipe, formation is along the top-down uniform current of collecting polar plate, current can rinse out the dust on collecting polar plate well uniformly, this wet cottrell does not carry out humidification to the flue gas entering before electric field, thereby reduces the generation of corona blocking; Can ensure the uniformity of current on collecting polar plate again, improve the efficiency of rinsing, and then improved efficiency of dust collection simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the scheme in the utility model embodiment, to the accompanying drawing of embodiment or required use be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those skilled in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 provides the structural representation of wet cottrell for the utility model one specific embodiment;
The first flushing water that Fig. 2 provides for the utility model one specific embodiment is from the structural representation of stable-pressure device;
The voltage waveform view that Fig. 3 powers for the pulse power that the utility model one specific embodiment provides.
Wherein, 11 be the first collecting polar plate row, 12 be the first discharge plume row, 13 for wash tub pipe, 14 be the first flushing water from stable-pressure device, 15 for air inlet airflow uniform distribution plate, 16 for air inlet, 17 for sewage collecting bucket, 21 be the second collecting polar plate row, 22 be the second discharge plume row, 23 for gas outlet airflow uniform distribution plate, 24 for gas outlet, 25 be the second flushing water from stable-pressure device, 26 for flushing water shower nozzle, 41 for tapered runner, 42 for circular cone, 43 for elastic circular ring, 44 for spring, 45 be bearing disc.
The specific embodiment
The utility model discloses a kind of wet cottrell, this wet cottrell does not carry out humidification to the flue gas entering before electric field, thereby reduces the generation of corona blocking; Can ensure the uniformity of current on collecting polar plate again, improve the efficiency of rinsing, and then improve efficiency of dust collection simultaneously.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiment.Based on embodiment of the present utility model, all other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belong to the scope that the utility model is protected.
Please refer to Fig. 1-Fig. 3, Fig. 1 provides the structural representation of wet cottrell for the utility model one specific embodiment; The first flushing water that Fig. 2 provides for the utility model one specific embodiment is from the structural representation of stable-pressure device; The voltage waveform view that Fig. 3 powers for the pulse power that the utility model one specific embodiment provides.
In the utility model one specific embodiment, wet cottrell comprises housing, is positioned at first collecting polar plate row the 11 and first discharge plume row 12 of housing.The first collecting polar plate row 11 comprises some collecting polar plates, the first discharge plume row 12 comprises some discharge plumes, from accompanying drawing 1, can find out, each root discharge plume is all parallel with the central axis of a collecting polar plate, can guarantee that like this first collecting polar plate row electric field is around even.On housing, offer the air inlet 16 flowing into for flue gas and the gas outlet 24 of flowing out for the flue gas after dedusting.
Also comprise in this embodiment wash tub pipe 13, this wash tub pipe 13 is positioned at the first collecting polar plate row's 11 top, and the axis direction of wash tub pipe 13 is parallel with the flow direction of flue gas, on wash tub pipe 13, offer some hole for water sprayings, these hole for water sprayings are all towards the first collecting polar plate row 11, for rinsing the dust of collecting on the first collecting polar plate row 11.Water is ejection from cleaning hose 13 under certain pressure, flushing water from the hole for water spraying ejection of wash tub pipe 13, formation is along the top-down uniform current of collecting polar plate, current can rinse out the dust on collecting polar plate well uniformly, this wet cottrell does not carry out humidification to the flue gas entering before electric field, thereby reduces the generation of corona blocking; Can ensure the uniformity of current on collecting polar plate again, improve the efficiency of rinsing, and then improved efficiency of dust collection simultaneously.
Preferably, the diameter of the hole for water spraying in above-mentioned is 2.5mm-3.5mm, and further, the diameter of hole for water spraying is 3mm.The current of the hole for water spraying ejection of 3mm diameter can meet the demand of rinsing dust on the first collecting polar plate completely, and can not cause the waste at water source.
In the utility model one specific embodiment, first collecting polar plate row 11 one end near wash tub pipe 13, blasting treatment has been passed through at the first collecting polar plate row's 11 top in other words, the roughness at top is Ra6.3-Ra12.5, when the current that spray from hole for water spraying are flowed through rough region, can be scattered in current more equably, current can cover the first collecting polar plate row's 11 surface more all sidedly in other words, can more up hill and dale the first collecting polar plate be arranged to 11 lip-deep dust and rinse out.Particularly, the pole plate that can arrange 11 top 500mm to the first collecting polar plate carries out blasting treatment.
In the utility model one specific embodiment, also comprise that the first flushing water being communicated with wash tub pipe 13 is from stable-pressure device 14.The first flushing water is as shown in Figure 2 from the structure principle chart of stable-pressure device 14.This first flushing water is comprised of A, B, C, tetra-cavitys of D from stable-pressure device 14, and wherein the pressure in cavity A is intake pressure; Pressure in cavity B is discharge pressure; Cavity C communicates with cavity B, so cavity C is identical with cavity B pressure; Cavity D communicates with atmosphere, and the pressure of cavity D is atmospheric pressure.The first operation principle from stable-pressure device 14 is: when intake pressure (being the pressure in cavity A) starts to increase, it is large that the pressure of water that is positioned at the cavity B in downstream also starts to become, and because cavity B communicates with cavity C, the pressure of the water in cavity C also starts to increase.And now the pressure in cavity D does not change, equal all the time atmospheric pressure, and the power that spring 44 provides does not change yet.Therefore, the power making progress that bearing disc 45 is subject to will increase, and bearing disc 45 will move upward, and (elastic circular ring 43 is to be made by soft material, and bearing disc 45 can freely-movable.）。The motion that bearing disc 45 makes progress, drive taper block 42 is moved upward, the circulation area of the water between it and tapered runner 41 is diminished, flow reduces, therefore the pressure in downstream cavity B and cavity C also starts to diminish, the power making progress that bearing disc 45 is subject to also starts to reduce, until bearing disc 45 reaches balance again, the excessive problem of hydraulic pressure is eased.When intake pressure diminishes, bearing disc 45 will move downward, and increase the circulation area of tapered runner, thereby increase the hydraulic pressure in cavity B, and then the hydraulic pressure in cavity C also can increase, until bearing disc 45 reaches balance again, the problem that hydraulic pressure diminishes will be eased.Pressure oscillation is eased, and developing result is more stable.
In the utility model one specific embodiment, in order further to reduce the generation of corona blocking phenomenon, be the electric pressure of the power supply of the first discharge plume row 12 power supplies, press heteropole apart from calculating, be not less than 4kV/cm, the current class of this power supply, press pole plate specific collection area and calculate, be not less than 0.6mA/m2.
In the utility model one specific embodiment, bottom at housing is also provided with sewage collecting bucket 17, flushing water rinsed the bottom that flow into housing after the first collecting polar plate, and then sewage can discharge in sewage collecting bucket 17, and the discharge of sewage is convenient in the setting of sewage collecting bucket 17.
In order to improve the uniformity of flow of flue gas, and then improve the efficiency of dust collection of wet cottrell, at air inlet 16 ends of housing, be provided with air inlet airflow uniform distribution plate 15, in the gas outlet of housing, 24 ends are provided with gas outlet airflow uniform distribution plate 23.
In the utility model one specific embodiment, also comprise the second collecting polar plate row and the second discharge plume row, the second collecting polar plate ranking is in the first collecting polar plate row's 11 downstream, and the first discharge plume row 12 is powered by high frequency electric source, and the second discharge plume row is powered by the pulse power.Treat that the flue gas of dedusting is first through the electric field of the first discharge plume row 12 formation, the content of the dust in flue gas is now relatively many, thus require the first discharge plume discharge electrically stronger, therefore the first discharge plume row 12 is powered by high frequency electric source.Flue gas is after the first collecting polar plate row's 11 dedusting, second electric field that can then enter the second discharge plume row formation carries out dedusting for the second time, the content that carries out the dust in the flue gas of dedusting is for the second time relatively little, therefore the second discharge plume row is powered by the pulse power.
What on the second collecting polar plate plate, accept is the more moistening flue gas after the first collecting polar plate is arranged 11 dedustings, therefore be difficult for forming dry section on the second collecting polar plate, therefore the second collecting polar plate row's top arranges flushing water shower nozzle 26, has so not only ensured dedusting quality but also has saved water.In order to ensure the stability of flushing water shower nozzle 26 water sprays, set up the second flushing water from stable-pressure device 25, this second flushing water is the hydraulic pressure for stabilization sprinkler head 26 from stable-pressure device 25.
Also it will be appreciated by persons skilled in the art that and can set up discharge plume row and collecting polar plate row according to the concrete condition of flue gas, the collecting polar plate of setting up row's top all arranges flushing water shower nozzle, to reach water-saving object.
In the utility model one specific embodiment, also comprise detector and controller, this detector is for detection of the first collecting polar plate row's 11 pole plate electric current, and the pole plate current value detecting is transferred to controller, controller carrys out the size of the basic voltage of control impuls power supply according to the size of pole plate current value.Thereby ensureing on the basis of dedusting quality, reaching the object of using electricity wisely.As shown in Figure 3, the pulse power is synthetic by basic voltage and pulse voltage to the voltage of electric field output, and basic voltage and pulse voltage can be controlled separately.
In this embodiment, the electric field that regulation the first discharge plume row 12 forms is the first electric field, and the electric field that the second discharge plume row forms is the second electric field.If it is less that detector detects the plate current density value of the first electric field, the tendency of this explanation corona blocking is more serious, and under this condition, the power supply basic voltage of the pulse power can arrange higher.If it is larger that detector detects the plate current density value of the first electric field, the tendency of this explanation corona blocking is not serious, and under this condition, the power supply basic voltage of the pulse power can arrange lower.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a wet cottrell, comprises housing, is positioned at the first collecting polar plate row (11) and the first discharge plume row (12) of described housing, is opened in air inlet (16) and gas outlet (24) on described housing,
It is characterized in that, also comprise the wash tub pipe (13) that is arranged at described first collecting polar plate row (11) top, the axis direction of this wash tub pipe (13) is parallel with the flow direction of flue gas, offers some hole for water sprayings towards described the first collecting polar plate row (11) on this wash tub pipe (13).
2. wet cottrell according to claim 1, is characterized in that, the diameter of described hole for water spraying is 2.5mm-3.5mm.
3. wet cottrell according to claim 1, is characterized in that, described the first collecting polar plate row (11) is Ra6.3-Ra12.5 near the roughness of one end of described wash tub pipe (13).
4. wet cottrell according to claim 1, is characterized in that, also comprises that the first flushing water being communicated with described wash tub pipe (13) is from stable-pressure device (14).
5. wet cottrell according to claim 1, is characterized in that, is the electric pressure of the power supply of described the first discharge plume row (12) power supply, press heteropole apart from calculating, be not less than 4kV/cm, the current class of this power supply, press pole plate specific collection area and calculate, be not less than 0.6mA/m2.
6. wet cottrell according to claim 1, is characterized in that, also comprises and is arranged at described housing bottom, for collecting the sewage collecting bucket (17) of sewage.
7. wet cottrell according to claim 1, is characterized in that, near described air inlet (16), is provided with air inlet airflow uniform distribution plate (15), near described gas outlet (24), is provided with gas outlet airflow uniform distribution plate (23).
8. wet cottrell according to claim 1, it is characterized in that, flow direction along flue gas, also comprise the second collecting polar plate row and the second discharge plume row that are positioned at described first collecting polar plate row (11) downstream, described the first discharge plume row (12) is powered by high frequency electric source, and described the second discharge plume row is powered by the pulse power.
9. wet cottrell according to claim 8, is characterized in that, also comprises that the second flushing water that is arranged at the flushing water shower nozzle (26) of described the second collecting polar plate row top and is communicated with this flushing water shower nozzle (26) is from stable-pressure device.
10. wet cottrell according to claim 8, is characterized in that, also comprises the detector for detection of described the first collecting polar plate row's pole plate electric current; Receive the pole plate current value that described detector detects, and according to pole plate current value, control the controller of the basic voltage size of the described pulse power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320677000.6U CN203556465U (en) | 2013-10-29 | 2013-10-29 | Wet electrostatic dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320677000.6U CN203556465U (en) | 2013-10-29 | 2013-10-29 | Wet electrostatic dust remover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203556465U true CN203556465U (en) | 2014-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320677000.6U Expired - Fee Related CN203556465U (en) | 2013-10-29 | 2013-10-29 | Wet electrostatic dust remover |
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| Country | Link |
|---|---|
| CN (1) | CN203556465U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104549741A (en) * | 2013-10-29 | 2015-04-29 | 杭州天明环保工程有限公司 | Wet electrostatic dust collector |
| CN105797854A (en) * | 2016-04-29 | 2016-07-27 | 浙江天地环保工程有限公司 | Flushing system for coupling of wet electric rear anode plate and front airflow uniform distribution plate and control method of flushing system |
| CN107413528A (en) * | 2016-05-23 | 2017-12-01 | 付怀仁 | A kind of wet-esp residual neat recovering system |
-
2013
- 2013-10-29 CN CN201320677000.6U patent/CN203556465U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104549741A (en) * | 2013-10-29 | 2015-04-29 | 杭州天明环保工程有限公司 | Wet electrostatic dust collector |
| CN105797854A (en) * | 2016-04-29 | 2016-07-27 | 浙江天地环保工程有限公司 | Flushing system for coupling of wet electric rear anode plate and front airflow uniform distribution plate and control method of flushing system |
| CN107413528A (en) * | 2016-05-23 | 2017-12-01 | 付怀仁 | A kind of wet-esp residual neat recovering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20201029 |
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| CF01 | Termination of patent right due to non-payment of annual fee |