CN107213744A - A kind of wet process dust collection device - Google Patents
A kind of wet process dust collection device Download PDFInfo
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- CN107213744A CN107213744A CN201710679704.XA CN201710679704A CN107213744A CN 107213744 A CN107213744 A CN 107213744A CN 201710679704 A CN201710679704 A CN 201710679704A CN 107213744 A CN107213744 A CN 107213744A
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- Prior art keywords
- dust collection
- flue gas
- ultrasonic
- gas flow
- collection device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
Abstract
The invention discloses a kind of wet process dust collection device, including ultrasonic ultrasonic delay line memory, for spraying fine water-spray into flue gas flow channel, ultrasonic atomization area is formed；Sonic generator, the ultrasonic ultrasonic delay line memory downstream is located at by flue gas flow direction, for setting up sound field in flue gas flow channel, forms sound wave coalescence area；Drop catcher, the sonic generator downstream is located at by flue gas flow direction, and the dust-laden drop for trapping the coalescence after the ultrasonic atomization spraying zone and sound wave condensation region forms dust collection section.The place that the device can significantly reduce cleaner after wet desulphurization takes and overall cost and operating cost, reduces the wastewater discharge of wet dedusting, equally reaches the ultra-clean discharge of chimney；Simultaneously as without high voltage electrostatic equipment, inner part can use non-conductive anti-corrosion nonmetallic materials, the operation risk of discharge off burning.
Description
Technical field
The present invention relates to technical field of dust removal equipment, mechanical and hydraulic combined dust is particularly carried out after wet desulphurization to the flue gas of discharge
Wet process dust collection device.
Background technology
Constantly increase recently as thermoelectricity installed capacity, and the total amount increase discharged pollutants is caused to atmospheric environment
Very big pressure, to implement the Scientific Outlook on Development of country, thermal power plant's pollutant emission standard (GB13223-2011) for newly promulgating
Formally implement on January 1st, 2012.
With the appearance of new standard, people are to the hazard of contaminant such as fine solid particle, acid mist, heavy metal environment and healthy
Understanding also further improve, country atmosphere pollutants emission standardses can also be improved constantly, particularly PM2.5 is this right
The great fine particulates of human health damage will certainly turn into Con trolling index of the country to atmosphere pollutants emission standardses.And show
Some wet desulfurization systems almost do not remove the ability of PM2.5 particulate matters, and the removing to mercury and SO3 aerosols etc. also extremely has
Limit, causes the downstream of chimney wind direction the phenomenons such as " acid rain ", " gypsum rain " often occur, or have " blue smoke " of long cigarette tail existing
As.
In this regard, prior art is to set up wet-type high-voltage electrostatic precipitation device after wet desulphurization to ensure the super of chimney
Clean emission, and occur in that the wet-type high-voltage electrostatic precipitation device of a variety of schools, mainly there is that horizontal metal is board-like, horizontal type non-metallic
Board-like, vertical nonmetallic tubular type etc..
Above-mentioned technical proposal is primarily present following defect：
One, although solve ultra-clean emission problem, but the either wet-type high-voltage electrostatic precipitation device of which school, is to utilize
The electrostatic dust collection principle of dust collecting pole plate is driven into after dust is charged through electric field force, its dust collection effect is by specific dust collection area and flue gas
The influence of wind speed, specific dust collection area is bigger, and flue gas wind speed is lower, and its dust-collecting efficiency is higher, but increases than laying dust area and reduction
Flue gas wind speed, make it that body construction is huge, occupied ground is more, and equipment manufacturing cost is too high.
Second, any wet-type high-voltage electrostatic precipitation device makes so, to be required to matched price costliness because of its principle of gathering dust
The high voltage supply control device of high-voltage electrostatic power and complexity, while power consumption is big, operating cost is high.
Third, the board-like wet cottrell of horizontal metal is due to wet-method desulfurized fume complicated and entrainment droplet,
There is very strong corrosivity, its inner part includes dust collector pole and discharge electrode and uses stainless steel, although with good efficiency of dust collection,
But equipment manufacturing cost is further increased, to prevent stainless steel metal pole plate not to be corroded, also needs continuous jet douche water to make component
Form moisture film and reach anti-corrosion and deashing effect, water consumption is huge.Although partial flushing water circulation use, because water consumption is big,
Recycle and make it that water system equipment is increasingly complex, cost is also higher, and arrange the wastewater flow rate still mistake for reclaiming and using to desulfurization
It is high, it tends to be difficult to all to recycle.
Fourth, horizontal type non-metallic is board-like or although vertical nonmetallic tubular electrostatic precipitator solves pole plate corrosion and brought
A series of problems, but because pole plate is nonmetallic materials, strengthen the measure of conduction despite the use of, its electric conductivity still can not show a candle to
Metal polar plate, therefore electric field can not obtain good C-V characteristic, have impact on efficiency of dust collection, want to obtain and metal polar plate is equal
Efficiency of dust collection, certainly will increase than laying dust area, its equipment manufacturing cost and the electrostatic precipitator for being not less than metal plate type, and take
More places.Moreover, dust collecting pole plate uses nonmetallic materials, during electrostatic dust collection, easily with spark discharge,
Ablation is easily caused to nonmetallic pole plate, catching fire is even resulted in, there is higher operation risk.
Therefore, the defect for how overcoming above-mentioned technical proposal to exist, is that those skilled in the art need the technology solved to ask
Topic.
The content of the invention
It is an object of the invention to provide a kind of wet process dust collection device.The device can significantly reduce dedusting after wet desulphurization and set
Standby place takes and overall cost and operating cost, reduces the wastewater discharge of wet dedusting, equally reaches the super of chimney
Clean emission；Simultaneously as without high voltage electrostatic equipment, inner part can use non-conductive anti-corrosion nonmetallic materials, discharge off combustion
The operation risk of burning.
To achieve the above object, the present invention provides a kind of wet process dust collection device, including：Ultrasonic ultrasonic delay line memory, for cigarette
Injection fine water-spray in flow channel, forms ultrasonic atomization area；Sonic generator, the ultrasonic atomization is located at by flue gas flow direction
Device downstream, for setting up sound field in flue gas flow channel, forms sound wave coalescence area；Drop catcher, by flue gas flow direction located at described
Sonic generator downstream, the dust-laden drop for trapping the coalescence after the ultrasonic atomization spraying zone and sound wave condensation region,
Form dust collection section.
Preferably, the drop catcher has some vertical exhaust gases passes, and the exhaust gases passes are on flue gas flow direction
Waveform, its crest and trough position form eddy flow area.
Preferably, the drop catcher be provided with some vertical corrugated platings arranged in the form of a grill, the corrugated plating it
Between form the exhaust gases passes.
Preferably, the crest of the corrugated plating and trough position semicircular in shape.
Preferably, the waveform radius of the exhaust gases passes is 50mm~200mm.
Preferably, the mist footpath of the ultrasonic ultrasonic delay line memory is 1 μm~15 μm.
Preferably, the sound wave wave band of the sonic generator is 500Hz~2000Hz.
Preferably, the flue gas flow channel includes vertical-sprue and horizontal run, and the ultrasonic ultrasonic delay line memory and sound wave occur
Device is located at the vertical-sprue or horizontal run, and the drop catcher is located at the horizontal run.
Preferably, collection device is further comprised, it catches below the drop catcher for collecting the drop
The dust-laden drop of storage discharge.
Preferably, the collection device includes water-collecting tray and the swash plate in the water-collecting tray, and the water-collecting tray is in institute
State and floss hole is provided with the low level of swash plate.
The present invention makes full use of the flue feature behind the flue gas characteristic after wet desulphurization and absorption tower, changes traditional electrostatic
Dedusting method, mechanical and hydraulic combined dust is realized with ultrasonic ultrasonic delay line memory, sonic generator and the combined form of drop catcher, wherein,
Nebulization efficiency can be improved 1000 times or so using ultrasonic ultrasonic delay line memory, water consumption saved, while having saved the consumption of water system
Electricity, similarly, the displacement of deduster are also just reduced, it is easier to be recovered and used；The flue gas characteristic after wet desulphurization is make use of,
Using the sonic agglomeration technology of common wave band, without making dust is charged can make dust coalescence, the high-pressure electrostatic of costliness is saved
The electric control system of power supply unit and complexity, saves equipment investment and power consumption；It is special using the high wind speed of micro- eddy flow principle
Property, using being designed with the wind speed such as flue, the section of deduster is reduced, equipment size is reduced and place takes, further section
Equipment investment is saved；In addition, the corrugated plating of drop catcher can use non-conductive common non-metal anti-corrosion material, cost is more
It is low, the corrosion-free risk of equipment, simultaneously as without high voltage electrostatic equipment, no-spark discharge scenario occurs, the also just wind without ablation
Danger, equipment safety and reliability.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of wet process dust collection device provided by the present invention；
Fig. 2 is the top view of wet process dust collection device shown in Fig. 1；
Fig. 3 is micro- eddy flow schematic diagram of drop catcher；
Fig. 4 is micro- eddy flow design sketch of drop catcher.
In figure：
1. the drop catcher 6. of 4. sonic generator of desulfuration absorbing tower 2. flue gas flow channel, 3. ultrasonic ultrasonic delay line memory 5. collects dress
Put the chimney of 5-1. exhaust gases passes 5-2. corrugated platings 7..
Embodiment
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Fig. 1, Fig. 2 are refer to, Fig. 1 shows for a kind of structure of embodiment of wet process dust collection device provided by the present invention
It is intended to；Fig. 2 is the top view of wet process dust collection device shown in Fig. 1.
In a kind of specific embodiment, the wet process dust collection device that the present invention is provided is arranged on the cigarette after desulfuration absorbing tower 1
On flow channel 2, mainly it is made up of the part such as ultrasonic ultrasonic delay line memory 3, sonic generator 4, drop catcher 5 and collection device 6,
Flue gas flow channel 2 includes vertical-sprue and horizontal run, and ultrasonic ultrasonic delay line memory 3 and sonic generator 4 are located at vertical-sprue, and drop is caught
Storage 5 is located at horizontal run.
Wherein, ultrasonic ultrasonic delay line memory 3 is used to spray fine water-spray into flue gas flow channel, forms ultrasonic wave spray atomizing area A,
It can select 1 μm~15 μm of mist footpath parameter；Sonic generator 4 is located at the downstream of ultrasonic ultrasonic delay line memory 3 by flue gas flow direction, in cigarette
Sound field is set up in flow channel 2, sonic agglomeration area B is formed, 500Hz~2000Hz wave band parameter is can select；Drop catcher 5 is pressed
Flue gas flow direction is located at the downstream of sonic generator 4, for trapping the coalescence after ultrasonic wave spray atomizing area A and sound wave coalescence area B
Dust-laden drop, formed dust collection section C.
Collection device 6 is located at the lower section of drop catcher 5, the dust-laden drop for collecting the discharge of drop catcher 5, and it catchments
Swash plate is provided with disk, and provided with floss hole at the low level of swash plate, the band cloud for collecting by setting swash plate to prevent
Drop splashing causes reentrainment of dust and influences efficiency of dust collection.
Certainly, it is illustrated that be only typical flue arrangement, in horizontal run long enough, or without vertical-sprue in the case of, mist
Changing area and coalescence area can equally be arranged on horizontal segment, as long as ensuring upstream-downstream relationship, without being necessarily arranged on Vertical Flow
On road.
Please also refer to Fig. 3, Fig. 4, Fig. 3 is micro- eddy flow schematic diagram of drop catcher；Fig. 4 is micro- rotation of drop catcher
Flow design sketch.
As illustrated, drop catcher 5 is on flue gas flow direction with some vertical exhaust gases passes 5-1, exhaust gases passes 5-1
Waveform, its crest and trough position form eddy flow area.
Specifically, (i.e. corrugated plating is vertical provided with some vertical corrugated plating 5-2 arranged in the form of a grill for drop catcher 5
Put), corrugated plating 5-2 crest and trough position semicircular in shape form waveform exhaust gases passes 5- between adjacent corrugated plating
1, exhaust gases passes 5-1 waveform radius are can be controlled between 50mm~200mm, for example waveform radius be r=50mm, 100mm,
150mm, 200mm, depending on dust operating mode and emission request, r values are smaller, and efficiency of dust collection is higher, but resistance is bigger.
Corrugated plating 5-2 height and spacing are designed by flue equal section, and length is determined according to dust operating mode and emission request, long
Degree is longer, and efficiency of dust collection is higher, but resistance is bigger.
The operation principle of above-mentioned wet process dust collection device is as follows：
First, in range of atomization, the fine water-spray in 1~15 μm of mist footpath is sprayed into flue gas from the nozzle of ultrasonic ultrasonic delay line memory 3, from cloud
Physics principle understands, due to the rapid evaporation of fine water-spray and cooling effect can make originally nearly saturated flue gas be rapidly saturated, very
To hypersaturated state is reached, supersaturated vapour understands the nuclei of condensation such as Automatic-searching dust and condenses coring and turn again to saturation state,
As the nuclei of condensation dust granules due to steam cohesion and close and increase, facilitation is played to follow-up trapping.
Then, in coalescence area, sound field is set up in flue gas flow channel by sonic generator 4, it was found from acoustic wave principles, in sound
Particle (including grit and water smoke grain) in produces vibration because of the effect by sound wave, and its vibration velocity is with particle diameter
Reduce and rise, promote particle of different sizes to carry out substantial amounts of positive power cohesion, make larger particle close far from it
Small particles and and they collided, further condense and close increase, generation sonic agglomeration effect, again, facilitate follow-up
Trapping.
Then, in dust collection section, grid-like corrugated plating 5-2 can the numerous microclone of quantity of formation, from hydrodynamics
Understand, when fluid flows through ripple grid, due to the mutation of runner, as long as flow of fluid has certain speed, it will in ripple
Boundary layer separation takes place in the certain point on card 5-2 convex surface, and the pressure of groove area is less than the pressure of bulk flow, produces anti-
Barometric gradient, so as to form bumpy flow as shown in Figure 3, the larger drop after the coalescence of upstream is easy to because of centrifugal action and ripple
Card wall is collided and is collected, and less drop, which will be driven by bumpy flow toward center, assembles continuous coalescence increase, then because gravity is made
With and be dropped into water-collecting tray, the neat stress by dedusting is from the row of chimney 7 to air.
Finally, water-collecting tray will dust-laden drop collect after discharge, set in it swash plate can the band dirt drop of anti-drip fly
Splash to form reentrainment of dust, further improve efficiency of dust collection.
Above-described embodiment is only the preferred scheme of the present invention, is specifically not limited thereto, on this basis can be according to reality
Need to make with targetedly adjusting, so as to obtain different embodiments.For example, spray atomizing area A, common sound wave coalescence
No matter area B, micro- eddy flow dust collection section C, each area are specifically located at which position of flue, or three subregions are combined, or three
Any combinations of individual subregion are included in protection scope of the present invention.Because mode in the cards is more, here just no longer one by one
Illustrate.
Wet process dust collection device provided by the present invention is described in detail above.Specific case pair used herein
The principle and embodiment of the present invention is set forth, and the explanation of above example is only intended to the core for helping to understand the present invention
Thought.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, also
Some improvement and modification can be carried out to the present invention, these are improved and modification also falls into the protection domain of the claims in the present invention
It is interior.
Claims (4)
1. a kind of wet process dust collection device, it is characterised in that including：Ultrasonic ultrasonic delay line memory, for spraying fine into flue gas flow channel
Water smoke, forms ultrasonic atomization area；Sonic generator, is located at the ultrasonic ultrasonic delay line memory downstream, in cigarette by flue gas flow direction
Sound field is set up in flow channel, sound wave coalescence area is formed；Drop catcher, the sonic generator downstream is located at by flue gas flow direction,
Dust-laden drop for trapping the coalescence after the ultrasonic atomization spraying zone and sound wave condensation region, forms dust collection section.
2. wet process dust collection device according to claim 1, it is characterised in that the drop catcher has some vertical cigarettes
Gas passage, exhaust gases passes undulate on flue gas flow direction, its crest and trough position form eddy flow area.
3. wet process dust collection device according to claim 2, it is characterised in that the drop catcher is provided with some with grid
The exhaust gases passes are formed between the vertical corrugated plating of form arrangement, the corrugated plating.
4. wet process dust collection device according to claim 3, it is characterised in that the crest of the corrugated plating and trough position are in
It is semicircle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710679704.XA CN107213744A (en) | 2017-08-10 | 2017-08-10 | A kind of wet process dust collection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710679704.XA CN107213744A (en) | 2017-08-10 | 2017-08-10 | A kind of wet process dust collection device |
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| Publication Number | Publication Date |
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| CN107213744A true CN107213744A (en) | 2017-09-29 |
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| CN201710679704.XA Pending CN107213744A (en) | 2017-08-10 | 2017-08-10 | A kind of wet process dust collection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113797693A (en) * | 2021-10-19 | 2021-12-17 | 广东佳德环保科技有限公司 | Wet type eddy current dust removal device and dust removal method thereof |
-
2017
- 2017-08-10 CN CN201710679704.XA patent/CN107213744A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113797693A (en) * | 2021-10-19 | 2021-12-17 | 广东佳德环保科技有限公司 | Wet type eddy current dust removal device and dust removal method thereof |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170929 |
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| WD01 | Invention patent application deemed withdrawn after publication |