CN203899750U - Combined type dust remover - Google Patents
Combined type dust remover Download PDFInfo
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- CN203899750U CN203899750U CN201420273270.5U CN201420273270U CN203899750U CN 203899750 U CN203899750 U CN 203899750U CN 201420273270 U CN201420273270 U CN 201420273270U CN 203899750 U CN203899750 U CN 203899750U
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- polar plate
- dust
- water
- dust collection
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Abstract
The utility model provides a combined type dust remover which comprises a polarity-assignment device stemming from a tubular electric precipitator, an airflow movement device based on a cyclone dust extractor, and a water film uniform distribution device, wherein a dust collection polar plate adopts three sections; an air inlet section is arranged at the upper section and adopts a cylindrical structure; a transitional section is arranged at the middle section and adopts a small-angle oblique cone, so that a water film can be uniformly distributed on the surface of the transitional section; a taper dust hopper is arranged at the lower section. A discharge electrode is positioned at the center of a dust collection electrode and adopts a hollow burr polar line; a middle circular tube is the purified exhaust gas outlet; a burr is welded on the outer surface of the circular tube and serves as the discharge electrode; a waterfall device is arranged at the top of the dust collection polar plate and enables water to flow from the first section to the bottom end of the dust collection polar plate along the inner side wall of the dust collection polar plate; exhaust gas enters in the tangent direction of an air inlet formed in the first section of a dust collection electrode, rotates downwards to the bottom of the dust remover, retraces upwards, and is discharged from the center of the discharge electrode circular tube; rotary airflow in the tangent direction facilitates uniform distribution of water films on the surface of the dust collection electrode. The structure of the dust collection polar plate of the dust remover avoids branching of water films during the falling process of water flow, so that the waterfall uniformity is improved, dry spots and ash hardening caused by non-uniform waterfall are effectively reduced, the back corona phenomenon is reduced, the dust removing efficiency is improved, and the water resource is saved.
Description
Affiliated technical field
The utility model relates to dedusting technology field, more particularly, relates to a kind of compound type dust remover.
Background technology
Along with the development of power industry, the increase of pollutant discharge amount has caused very havoc to atmospheric environment, therefore very urgent to the improvement of atmosphere pollution.
Deduster is a kind of cleaner that dust can be separated from flue gas.According to the difference of action principle, deduster can comprise: the types such as filtration dust catcher, electrostatic precipitator and cyclone dust collectors; According to the difference of purge mode, deduster can comprise: dry collector, half dry type deduster and wet scrubber.
The wet cottrell that electrostatic precipitator and wet scrubber are combined adopts the working method of electrostatic dust collection, wet type deashing, have drag losses little, allow serviceability temperature high, efficiently remove fine particle, prevent the advantages such as reentrainment of dust, be one of deduster conventional in current coal-burning boiler dust pelletizing system.
Wet cottrell rinses the dust that is deposited on collecting polar plate surface get off by the mode of waterfall water conventionally, but current tend to occur the problem of the study of water film distribution inequalities such as bifurcated in the process declining, cause the dust in some region, collecting polar plate surface to remove, occur that dry spot point or ash harden, very easily cause the generation of back corona phenomenon, reduce efficiency of dust collection, in addition, for fear of dry spot point and grey generation of hardening, need to add big yield and rinse, this has just caused the waste of water resource.
Utility model content
The utility model provides a kind of compound type dust remover, to improve the uniformity of wet cottrell collecting polar plate surface waterfall water, reduces the back corona phenomenon that dry spot point and ash harden and cause, improves efficiency of dust collection, saving water resource.
For achieving the above object, the utility model provides following technical scheme:
A kind of compound type dust remover, comprising: come from tube-type esp extremely equippedly put, air motion device and moisture film even distribution device based on cyclone dust collectors.Collecting polar plate adopts syllogic, and epimere is air inlet section, adopts cylindrical structural; Stage casing is changeover portion, adopts small angle inclination cone, is conducive to moisture film and distributes at its surface uniform; Hypomere is cone type ash bucket.Discharge electrode is positioned at dust collecting electrode center, adopts hollow type arista polar wire, and middle pipe purifies rear flue gas discharge opening the most, and pipe outer surface welding prickle is as discharge electrode.Waterfall device is established at the top of collecting polar plate, and waterfall device makes the bottom of water from first paragraph to collecting polar plate flow along the madial wall of collecting polar plate; Flue gas is tangentially entered by the air inlet that is positioned at dust collecting electrode first paragraph, rotates down to turning back upwards behind deduster bottom, is discharged by discharge electrode pipe center, rotates downward air-flow and contributes to being uniformly distributed of dust collecting electrode surface moisture film.
Preferably, the basis of this deduster design is cyclone dust collectors and tube-type esp.
Preferably, described collecting polar plate is syllogic frustum cone structure, and described first paragraph is cylindrical, and second segment is low-angle taper, and the area of second segment bottom circle is greater than the area of the 3rd section of bottom circle
Preferably, described deduster also comprises: the air inlet that is arranged at described first paragraph, air inlet, for tangentially passing into whirlwind to described deduster inside, makes dust fully contact with charged region, and move to collecting polar plate under the acting in conjunction of electric field force and centrifugal force.Be arranged at the air outlet of central tube, the flue gas after dedusting is discharged.
Preferably, described deduster welds prickle as discharge electrode at center circle tube outer surface.
Preferably, described deduster arranges waterfall device at top, and the design of syllogic round platform is uniformly distributed collecting plate surface moisture film.
Compared with prior art, technical scheme provided by the utility model at least has the following advantages:
Deduster provided by the utility model, taking cyclone dust collectors as basis, enter flue gas from air inlet, through rotating downward flowing, fully contact with the charged region of electric cleaner, improve charged efficiency, make charged grit move to dust collecting electrode under electric field force and centrifugal force acting in conjunction simultaneously, and then raising efficiency of dust collection, rotate downward air-flow simultaneously and contribute to being uniformly distributed of collecting plate surface moisture film.And the problem of the moisture film bifurcated in current decline process has been avoided in the design of syllogic frustum cone structure, improve waterfall water uniformity, effectively reduced the inhomogeneous dry spot point causing of waterfall water and ash and hardened, reduced back corona phenomenon, improve efficiency of dust collection, and saved water resource.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The profile of the deduster that Fig. 1 provides for the utility model embodiment;
The deduster discharge electrode that Fig. 2 provides for the utility model embodiment.
Detailed description of the invention
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.
A lot of details are set forth in the following description so that fully understand the utility model, but the utility model can also adopt other to be different from alternate manner described here and implement, those skilled in the art can do similar popularization without prejudice to the utility model intension in the situation that, and therefore the utility model is not subject to the restriction of following public specific embodiment.
Secondly, the utility model is described in detail in conjunction with schematic diagram, in the time that the utility model embodiment is described in detail in detail; for ease of explanation; the profile of indication device structure can be disobeyed general ratio and be done local amplification, and described schematic diagram is example, and it should not limit the scope of the utility model protection at this.In addition in actual fabrication, should comprise, the three-dimensional space of length, width and the degree of depth.
The utility model embodiment provides a kind of compound type dust remover, as shown in Figure 1, comprising: first paragraph collecting polar plate 101, and this collecting polar plate 101 is positioned at deduster air inlet section; Be positioned at the waterfall device 108 on the top of collecting polar plate 101, waterfall device 108 makes water flow along the madial wall of collecting polar plate bottom from first paragraph to collecting polar plate
The top of the tubular structure that dust collecting electrode 101 forms is provided with waterfall device 108, the first end of the tubular structure that this waterfall device forms from dust collecting electrode 101 is sprayed water to the second end, what water (flow) direction was concrete can be as shown in the arrow in Fig. 1, current flow along collecting polar plate 101 madial walls, form in its surface direction moisture film from top to bottom, thereby the dust of collecting polar plate 101 adsorptions is rinsed down, reach the object of wet type deashing.
Discharge electrode is made up of discharge pipe 104 and welding prickle 106 thereon.Discharge electrode connects negative high voltage and makes gas ionization, produces a large amount of ions, thus make grit in flue gas charged and under the effect of electric field force with flow separation.
The compound type dust remover that the present embodiment provides, also taking cyclone dust collectors as basis, tangentially pass into flue gas by air inlet 105, flue gas does rotation and moves downward in deduster inside, flue gas fully contacts with the charged region that the prickle on center tube 104 forms in deduster, more be conducive to charged, simultaneously grit also under the effect of centrifugal force to dust collecting electrode motion, efficiency of dust collection is improved.The air-flow of tangential rotation makes the study of water film distribution on collecting plate 101,102 more even, discharges from center tube 104 through the flue gas of deduster processing.
It should be noted that, the air outlet of cyclone dust collectors 104 is designed to discharge electrode by this design, as shown in Figure 2, and at the intensive prickle of the surface soldered of central tube.
The deduster that this example provides, be designed to syllogic frustum cone structure, be the residing three sections of regions of collecting plate 101,102,103, the bottom surface circle of the definite round platform of collecting plate 101 should be greater than the definite round platform bottom surface circle of collecting plate 102, and the definite round platform bottom surface circle of collecting plate 102 should be greater than the definite round platform bottom surface circle of collecting plate 103.
It should be noted that, the center of circle of collecting plate 101,102,103 determined round platforms should be point-blank, and this straight line is perpendicular to bottom surface circle.
The syllogic frustum cone structure that this example provides, because second segment is designed to the ramp structure at certain angle of inclination, make the state of flow become to tilt to decline from vertical decline of the prior art, thereby current can better be flowed on collecting polar plate 101,102,103 surfaces under the effect of gravity, improved the uniformity of waterfall water moisture film.Because well-known, current flow than flowing and more easily produce the inhomogeneous phenomenon of waterfall water on inclined surface on vertical plane, make waterfall moisture fork, occur the phenomenon of dust stratification.The structural design of this example has well solved this problem.Simultaneously due to punching ash in time, the dust layer thickness on collecting plate is reduced greatly, and then has reduced that ash hardens and back corona phenomenon.
It should be noted that, so-called back corona phenomenon refers to and in electric cleaner, is deposited on the partial discharge phenomenon that the lip-deep high resistivity dust layer of collecting polar plate 101 produces.The dust layer thickness that the dry spot point that waterfall water is inhomogeneous produced or ash harden is thicker, because the electric charge of dust layer discharges slowly, cause the larger electric potential gradient of formation between dust, dust layer is thicker, more easily causes electric-field intensity to be greater than critical value, causes between the space of dust layer partial breakdown occurs, it shows as electric current and increases, lower voltage, dust secondary fly-up is serious, dust catching efficiency severe exacerbation.
The angle of inclination that it should be noted that collecting polar plate 102,103 sidewalls preferably can be designed according to actual conditions, angle of inclination is too large, may make water velocity too slow, affects cleaning efficiency, angle of inclination is too small, and may improve the inhomogeneity effect of waterfall water can be not obvious.Concrete, the bus of madial wall and the angle of vertical direction are preferably 10 degree～30 degree.
Although the utility model discloses as above with preferred embodiment, but not in order to limit the utility model.Any those of ordinary skill in the art, do not departing from technical solutions of the utility model scope situation, all can utilize method and the technology contents of above-mentioned announcement to make many possible variations and modification to technical solutions of the utility model, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not depart from technical solutions of the utility model,, all still belongs in the scope of technical solutions of the utility model protection any simple modification made for any of the above embodiments, equivalent variations and modification according to technical spirit of the present utility model.
Claims (5)
1. a compound type dust remover, is characterized in that, comprising:
Based on extremely equipped the putting of tube-type esp;
Air inlet based on cyclone dust collectors and air-out apparatus;
Be positioned at the waterfall device of dust remover roof.
2. deduster according to claim 1, is characterized in that, comprising:
For collecting the collecting polar plate of dust, described collecting polar plate is syllogic;
The first paragraph that is positioned at described collecting polar plate is cylindrical, and waterfall device is established at its top, and described waterfall device makes the bottom of water from described first paragraph to described collecting polar plate flow along the madial wall of described collecting polar plate;
Described collecting plate second segment is small angle inclination cone, and the angle of madial wall bus and vertical direction is 10 degree～15 degree, and it can help to carry out the water of waterfall again on collecting polar plate surface;
The 3rd section of described collecting plate is cone type ash bucket, and bottom is the outlet of deashing water.
3. deduster according to claim 1, is characterized in that, described discharge electrode is positioned at described compound type dust remover center, and described discharge plate is column structure, outer surface welding electric discharge prickle.
4. deduster according to claim 2, is characterized in that, described collecting polar plate first paragraph outside is connected to the smoke inlet tangentially entering, and flue gas is tangentially entered.
5. deduster according to claim 3, is characterized in that, is hollow structure, as smoke discharge tube in the middle of described discharge electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420273270.5U CN203899750U (en) | 2014-05-27 | 2014-05-27 | Combined type dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420273270.5U CN203899750U (en) | 2014-05-27 | 2014-05-27 | Combined type dust remover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203899750U true CN203899750U (en) | 2014-10-29 |
Family
ID=51774041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420273270.5U Expired - Fee Related CN203899750U (en) | 2014-05-27 | 2014-05-27 | Combined type dust remover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203899750U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104056720A (en) * | 2014-05-27 | 2014-09-24 | 华北电力大学（保定） | Composite dust collector |
| CN106984117A (en) * | 2016-01-20 | 2017-07-28 | 浙江大学自贡创新中心 | A kind of flue gas dust collecting system |
| WO2020083147A1 (en) * | 2018-10-22 | 2020-04-30 | 上海必修福企业管理有限公司 | Engine intake air dust removal system and method |
-
2014
- 2014-05-27 CN CN201420273270.5U patent/CN203899750U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104056720A (en) * | 2014-05-27 | 2014-09-24 | 华北电力大学（保定） | Composite dust collector |
| CN106984117A (en) * | 2016-01-20 | 2017-07-28 | 浙江大学自贡创新中心 | A kind of flue gas dust collecting system |
| WO2020083147A1 (en) * | 2018-10-22 | 2020-04-30 | 上海必修福企业管理有限公司 | Engine intake air dust removal system and method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20170527 |