CN205613575U - Wet -type electrostatic precipitator with flue gas degree of depth desulfurization function - Google Patents
Wet -type electrostatic precipitator with flue gas degree of depth desulfurization function Download PDFInfo
- Publication number
- CN205613575U CN205613575U CN201620411584.6U CN201620411584U CN205613575U CN 205613575 U CN205613575 U CN 205613575U CN 201620411584 U CN201620411584 U CN 201620411584U CN 205613575 U CN205613575 U CN 205613575U
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- China
- Prior art keywords
- flue gas
- desulfurizer
- wet electrical
- electrical dust
- dust precipitator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a wet -type electrostatic precipitator with flue gas degree of depth desulfurization function, which comprises a housin, the inside from bottom to up of casing sets up desulphurization unit, defogging device and dust collector, is located the desulphurization unit below the casing wall is equipped with imported flue, and the flue gas loops through desulphurization unit the defogging device reaches dust collector, desulphurization unit with set up the gas uniform distribution device between the import flue, the flue gas warp the gas uniform distribution device flow direction desulphurization unit to make the gas distribution homogeneity that gets into desulphurization unit improve, thereby improve this desulphurization unit's desulfurization efficiency.
Description
Technical field
The utility model relates to flue gas ash removal technical field, has the flue gas degree of depth particularly to one
The wet electrical dust precipitator of desulfurizing function.
Background technology
With the appearance of prevention and control of air pollution action plan and new environmental law, China is coal-fired, combustion gas
Industry pollutant emission standard increasingly stringent is greatly to million unit power plant, little to building materials, petrochemical industry
Etc. every profession and trade boiler and kiln, it is achieved flue gas deep purifying is trend of the times.At present, portion of China
Divide power plant and major part Pollutant in Coal Burning Boiler (especially SO2And dust) discharge be all difficult to reach
Mark discharge.
For fine particle control, traditional scheme is to use sack cleaner or electric bag dust
Device, and sack cleaner easily blocking itself, crushing causes greatly, and therefore operating cost is higher, and one
As be used as dust front-end control facilities.Wet cottrell as dust terminal control device,
There is the removal efficiency of more than 90% to fine particle thing, therefore, at present at power plant, Industrial Boiler
And the field such as kiln is widely used.In addition, in order to meet new discharge standard, before discharging,
Desulfurization process need to be carried out to flue gas.
At present, the method commonly used, for combining desulfurizing tower and gas wash tower, is installed on desulfurizing tower top
Wet cottrell, forms the wet cottrell of built-in spray system, for preventing flue gas
The bulky grain gypsum carried secretly enters dust arrester, causes dust arrester cathode and anode system bottom to rush
Wash difficulty, one-level demister typically need to be installed between top layer spraying layer and wet static dedusting district.
Based on this, the wet cottrell of this built-in spray system includes the desulfurization being distributed from bottom to top
Device, one-level demister and dust arrester.
In the wet cottrell of above-mentioned built-in spray system, flue gas enters from inlet flue duct
After, flow directly into each shower in desulfurizer, owing to flue gas stream uniformity is relatively low, make
Become desulfurizer incomplete to flue gas local desulfurization, reduce the efficiency of desulfurizer.
The defect existing in view of the wet cottrell of above-mentioned built-in spray system, it would be highly desirable to provide
The higher wet electrical dust precipitator of a kind of desulfuration efficiency.
Utility model content
For solving above-mentioned technical problem, the purpose of this utility model is deep for providing one to have flue gas
The wet electrical dust precipitator of degree desulfurizing function, arranges gas between its desulfurizer and inlet flue duct equal
Cloth apparatus, so that the smoke distribution uniformity entering desulfurizer improves, thus improves this desulfurization
The desulfuration efficiency of device.
In order to realize the purpose of this utility model, the utility model provides one to have the flue gas degree of depth
The wet electrical dust precipitator of desulfurizing function, including housing, described enclosure interior arranges de-from bottom to top
Sulphur device, demister and dust arrester, be positioned at the described housing wall below described desulfurizer
Face is provided with inlet flue duct, and flue gas passes sequentially through described desulfurizer, described demister and described
Dust arrester, arranges even gas distribution device, cigarette between described desulfurizer and described inlet flue duct
Gas flows to described desulfurizer through described even gas distribution device.
Being arranged such, this even gas distribution device can improve the entrance each parts of this wet electrical dust precipitator
The distributing homogeneity of flue gas, the distribution that especially can improve the flue gas entering desulfurizer is equal
Even property, it is to avoid the flue gas local incomplete situation of desulfurization occurs in this desulfurizer, thus improves de-
The deep desulfuration efficiency of sulphur device.Meanwhile, although this even gas distribution device reduces the rapids of flue gas
Flow process degree, and then it is lowered into the turbulent extent of flue gas and drop contact in desulfurizer, but,
Which raises the time of staying in desulfurizer for the flue gas, thus improve this desulfurizer further
Desulfuration efficiency.
Alternatively, described shell wall side is horizontally fixed with sieve plate, and described sieve plate offers some little
Hole, described sieve plate is described even gas distribution device.
Alternatively, along described sieve plate radially inwardly, the diameter of described aperture is gradually increased.
Alternatively, described housing is rectangular configuration, and its side arranges some institutes in the width direction
State inlet flue duct.
Alternatively, the upper wall surface of described inlet flue duct is horizontally disposed with, and lower wall surface is downward-sloping, with
Make the rectangular trapezium structure of described inlet flue duct.
Alternatively, the angle between the lower wall surface of described inlet flue duct and described housing exterior walls face is
50～80 °.
Alternatively, described desulfurizer includes some nozzles, including the spray liquid of soda lye is from institute
State ejection in nozzle；
Each described nozzle forms some horizontally disposed spraying layers, along direction from bottom to top, respectively
In described spraying layer, the spray liquid pressure of described nozzle is gradually reduced.
Alternatively, the inner walls below each described spraying layer is respectively and fixedly provided with ring baffle, and institute
State ring baffle downward-sloping.
Alternatively, the bottom of described housing arranges some Drainage Divisions, and described Drainage Division is for from up to
The pyramidal structure that lower section is gradually reduced.
Alternatively, described housing upper arranges some exhaust pass, and described exhaust pass is under oneself
The pyramidal structure being gradually reduced to upper section.
Brief description
Fig. 1 is the wet electrical dust precipitator with flue gas desulfurization function provided by the utility model
Structural representation；
Fig. 2 is the side view of Fig. 1.
In Fig. 1-2:
1 housing, 11 inlet flue ducts, 12 exhaust pass, 13 Drainage Divisions；
2 desulfurizers, 21 nozzles, 22 ring baffles；
3 sieve plates, 4 demisters；
5 dust arresters, 51 dust collection sections, 52 rinsing areas.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the technical solution of the utility model, under
Face combines the drawings and specific embodiments, and the utility model is described in further detail.
Refer to accompanying drawing 1-2, wherein, Fig. 1 is provided by the utility model to have flue gas desulfurization
The structural representation of the wet electrical dust precipitator of function；Fig. 2 is the side view of Fig. 1.
In a kind of specific embodiment, the utility model provides one to have flue gas deep desulfuration work(
Can wet electrical dust precipitator, as it is shown in figure 1, include housing 1, this housing 1 internal from down to
On desulfurizer the 2nd, demister 4 and dust arrester 5 are set, be positioned at below desulfurizer 2
Housing 1 wall is provided with inlet flue duct 11, and flue gas passes sequentially through desulfurizer the 2nd, demister 4
And dust arrester 5.Wherein, the deep desulfuration acting as carrying out flue gas of desulfurizer 2 is (de-
Sulphur efficiency is 90%～99%), in addition, the first grade desulfurizing of flue gas is in the front end of this electrostatic precipitator
Equipment is carried out；The effect of demister 4 is the drop removing in flue gas；The work of dust arrester 5
With being the dust removing in flue gas.After being appreciated that flue gas passes sequentially through above-mentioned each device, its
Cleanliness factor is greatly improved, and can remove the SO in flue gas2, so that this flue gas can be expired
Foot discharge standard.
In addition, in the wet electrical dust precipitator shown in Fig. 1, desulfurizer 2 and inlet flue duct 11
Between even gas distribution device is set, enter the flue gas of wet electrical dust precipitator through this even gas distribution device
Flow to desulfurizer 2.
Being arranged such, this even gas distribution device can improve the entrance each parts of this wet electrical dust precipitator
The distributing homogeneity of flue gas, especially can improve the distribution of the flue gas entering desulfurizer 2
Uniformity, it is to avoid the flue gas local incomplete situation of desulfurization occurs in this desulfurizer 2, thus carries
The deep desulfuration efficiency of high desulfurizer 2.Meanwhile, although this even gas distribution device reduces cigarette
The turbulent extent of gas, and then it is lowered into the turbulent flow journey of flue gas and drop contact in desulfurizer 2
Degree, but, which raises the time of staying in desulfurizer 2 for the flue gas, thus carry further
The desulfuration efficiency of this desulfurizer 2 high.
Specifically, as depicted in figs. 1 and 2, housing 1 wall is horizontally fixed with sieve plate 3, and
This sieve plate 3 offers some apertures, and this sieve plate 3 is above-mentioned even gas distribution device.In addition,
When this sieve plate 3 is horizontally disposed with, vertically flowed by the flue gas after this sieve plate 3, i.e.
When flue gas enters dust arrester 5, flue gas stream is parallel with the pole plate of dust collection section 51, thus improves
The efficiency of dust collection of dust arrester 5.
It is appreciated that above-mentioned even gas distribution device is not limited in by horizontally disposed sieve plate
3 realize, it is possible to use other even gas distribution devices commonly used in the art, as used tubular gas equal
Cloth device.This tubular gas uniform device is made up of some guide pipes, and each guide pipe is connected to take off
Sulphur device 2, realizes entering the distributing homogeneity of the flue gas of desulfurizer 2 by each guide pipe.But
It is sieve plate 3 simple in construction in the present embodiment, cost-effective.
Further, along sieve plate 3 radially inwardly, the diameter of the aperture of above-mentioned sieve plate 3
It is gradually increased.Due to the existence in boundary layer, the flue gas flow rate near housing 1 wall is less than housing
The flow velocity of 1 center flue gas, therefore, when sieve plate 3 is less near the small aperture of housing 1 wall
When, it is possible to increase by the flow velocity of flue gas at close housing 1 wall of sieve plate 3, so that
More uniform by the flue gas flow rate everywhere of this sieve plate 3, reduce boundary layer to flue gas uniformity
Impact, improves the desulfuration efficiency of desulfurizer 2 further.
Under normal circumstances, the percent opening of sieve plate 3 is 30%～50%, the aperture of the aperture of sieve plate 3
It is 50～100mm, it will be understood that according to simulation of air flow as a result, it is possible to appoint according to actual needs
Meaning design has the sieve plate 3 of different percent openings and small aperture.
Further, as depicted in figs. 1 and 2, housing 1 is rectangular configuration, and its side edge
Width arranges some above-mentioned inlet flue ducts 11, and each inlet flue duct 11 width sum is substantially
Equal with the width of housing 1.
It is appreciated that above-mentioned housing 1 is not limited in as rectangular configuration, it is possible to normal for this area
Cylindrical housings, but, the housing 1 of rectangular configuration and cylindrical housings in the present embodiment
Compare, advantageously in the arrangement of each pole plate of dust arrester 5 dust collection section 51, at housing 1
Near wall also can arrange pole plate, thus improves the space availability ratio of housing 1, and prevents from removing
There is flue gas escape phenomenon in dirt device 5 at housing 1 wall, thus improves dust arrester
The efficiency of dust collection of 5.
Meanwhile, when inlet flue duct 11 is covered with housing 1 width, the cigarette of wet electrical dust precipitator is entered
Gas can be full of housing 1 inner space, thus improves the utilization rate of each parts.Set in addition, work as
When having multiple inlet flue duct 11, compared to being provided only with an inlet flue duct, each inlet flue duct 11
Sectional area is less, therefore, enters the flue gas flow rate of wet electrical dust precipitator relatively by inlet flue duct 11
High.
Specifically, in Fig. 1 and the embodiment shown in Fig. 2, the upper wall surface level of inlet flue duct 11
Arranging, lower wall surface is downward-sloping, so that the rectangular trapezium structure of inlet flue duct 11.It is arranged such,
Along the flow direction of flue gas, inlet flue duct 11 sectional area is gradually increased, and flue gas is at inlet flue duct
In 11, pressure increases, and flow velocity reduces, thus ensures to enter the flue gas flow rate of this wet electrical dust precipitator
Less than 10m/s, it is to avoid flue gas enters fashionable vortex phenomenon, improve flue gas further and enter desulfurization
Distributing homogeneity during device 2.
More specifically, the folder between the lower wall surface of above-mentioned inlet flue duct 11 and the outside wall surface of housing 1
Angle is 50～80 °, i.e. in Fig. 1, α is 50 °～80 °.
Being appreciated that above-mentioned α is not limited in is 50 °～80 °, and α is less, enters wet type electricity and removes
The flue gas flow rate of dirt device is less, can appropriate design α according to actual needs, thus it is wet to change entrance
The flow velocity of flue gas in formula electric cleaner.
In various embodiments above, desulfurizer 2 includes some nozzles 21, including the spray of soda lye
Drench liquid to spray in nozzle 21, owing to this desulfurizer 2 is for the deep desulfuration of flue gas, its sodium
Alkali consumption is simultaneously little, therefore, the cost of desulfurizer 2 will not be greatly improved, but its desulfurization is imitated
Rate is far above the calcium alkali lye under equal conditions, and is substantially reduced gas liquid ratio so that desulfurizer 2
And do not need to arrange baroque demister between dust arrester 5, thus reduce except mist dress
Put the cost of 5, and reduce the risk of cathode and anode system bottom fouling in dust collection section 51.
In addition, each nozzle 21 forms some horizontally disposed spraying layers, and along from bottom to top
Direction, the spray liquid pressure of each spraying layer inner nozzle 21 is gradually reduced.Generally, bottom
High 0.1～the 0.3bar of spray liquid pressure ratio top layer spraying layer pressure.
It is arranged such, when bottom spraying layer spray liquid pressure is bigger, more specific surface can be produced
Long-pending bigger spray liquid droplet, thus increase mass-transfer efficiency, improve deep desulfuration efficiency；Top
When layer spraying layer spray liquid pressure is less, spray liquid liquid-drop diameter is relatively big, is prevented from forming spray
Drench liquid droplet and enter demister 4, thus avoid removing owing to the flue gas of entrained drip enters this
Mist device 4 and make demister 4 need have higher efficiency, and then reduce demister
The cost of 4.Meanwhile, after Multi-layer sprinkling layer, the flow field of the flue gas of dust arrester 5 is entered
More uniform, advantageously in dust catching in dust collection section 51 for the flue gas, thus improve dedusting
Device 5 efficiency of dust collection.
Therefore, in the present embodiment, the differentiation of desulfurizer 2 each spraying layer pressure is arranged on guarantee
While desulfurizer 2 has higher desulfuration efficiency so that enter the drop of demister 4
Less, thus reduce the requirement to demister 4 demisting efficiency, the present embodiment uses efficiency
Relatively low demister 4 can meet requirement.
Further, as it is shown in figure 1, housing 1 inwall below each spraying layer is respectively and fixedly provided with ring
Shape baffle plate 22, and each ring baffle 22 is all downward-sloping.It is arranged such, each ring baffle 22
On the one hand can reduce impact, infiltration and corrosion to housing 1 inwall for the spray liquid, play protection
The effect of housing 1 anticorrosive coat, on the other hand, additionally it is possible to avoid spray liquid to coagulate at housing 1 wall
Knot, and then avoid gas-liquid contact at shell wall side not enough and the local desulfuration efficiency that causes reduces.
In various embodiments above, the bottom of housing 1 arranges Drainage Division 13, and Drainage Division 13 is for certainly
The pyramidal structure that up to lower section is gradually reduced.
As in figure 2 it is shown, this wet electrical dust precipitator can include some Drainage Divisions 13, and each Drainage Division
13 are located at bottom housing 1 in the width direction.
The flushing water of this wet electrical dust precipitator and shower water import this Drainage Division 13, and Drainage Division
13 bottoms can arrange fluid-tight well, prevents flue gas from escaping from local, Drainage Division 13.In addition, pass through
The cone angle of appropriate design Drainage Division 13 and draining bore, ensure that shower water passes through with flushing water
This Drainage Division 13 is discharged smoothly, prevents hydrops in housing 1, and the flushing of this wet electrical dust precipitator
District 52 uses industry water as flushing water, and desulfurizer 2 uses industry water to supplement water as spray.
On the other hand, housing 1 top arranges exhaust pass 12, and this exhaust pass 12 is under oneself
The pyramidal structure being gradually reduced to upper section.It is arranged such, it is possible to increase from exhaust pass 12
The flow velocity of the flue gas discharged.
Above to a kind of wet type with flue gas deep desulfuration function provided by the utility model
Electric cleaner is described in detail.Specific case used herein is to of the present utility model former
Reason and embodiment are set forth, and the explanation of above example is only intended to help and understands this reality
By novel method and core concept thereof.It should be pointed out that, the ordinary skill for the art
For personnel, on the premise of without departing from the utility model principle, can also be to the utility model
Carrying out some improvement and modification, these improve and modify and also fall into the utility model claim
In protection domain.
Claims (10)
1. there is a wet electrical dust precipitator for flue gas deep desulfuration function, including housing (1),
Described housing (1) is internal to be arranged desulfurizer (2), demister (4) from bottom to top and removes
Dirt device (5), described housing (1) wall being positioned at described desulfurizer (2) lower section is provided with
Inlet flue duct (11), flue gas passes sequentially through described desulfurizer (2), described demister (4)
And described dust arrester (5), it is characterised in that described desulfurizer (2) and described import cigarette
Road arranges even gas distribution device between (11), and flue gas flows to described through described even gas distribution device
Desulfurizer (2).
2. wet electrical dust precipitator according to claim 1, it is characterised in that described shell
Body (1) wall is horizontally fixed with sieve plate (3), and described sieve plate (3) offers some apertures,
Described sieve plate (3) is described even gas distribution device.
3. wet electrical dust precipitator according to claim 2, it is characterised in that along described
Radially inwardly, the diameter of described aperture is gradually increased sieve plate (3).
4. wet electrical dust precipitator according to claim 1, it is characterised in that described shell
Body (1) is rectangular configuration, and its side arranges some described inlet flue ducts (11) in the width direction.
5. wet electrical dust precipitator according to claim 4, it is characterised in that described enter
The upper wall surface of mouth flue (11) is horizontally disposed with, and lower wall surface is downward-sloping, so that described import cigarette
The rectangular trapezium structure in road (11).
6. wet electrical dust precipitator according to claim 5, it is characterised in that described enter
Angle between the lower wall surface of mouth flue (11) and described housing (1) outside wall surface is 50～80 °.
7. the wet electrical dust precipitator according to according to any one of claim 1-6, it is characterised in that
Described desulfurizer (2) includes some nozzles (21), including the spray liquid of soda lye is from described
Ejection in nozzle (21)；
Each described nozzle (21) forms some horizontally disposed spraying layers, along side from bottom to top
To in each described spraying layer, the spray liquid pressure of described nozzle (21) is gradually reduced.
8. wet electrical dust precipitator according to claim 7, it is characterised in that each described
Housing (1) inwall below spraying layer is respectively and fixedly provided with ring baffle (22), and described annular gear
Plate (22) is downward-sloping.
9. wet electrical dust precipitator according to claim 8, it is characterised in that described shell
The bottom of body (1) arranges some Drainage Divisions (13), and described Drainage Division (13) are for from top to bottom
The pyramidal structure that cross section is gradually reduced.
10. wet electrical dust precipitator according to claim 8, it is characterised in that described shell
Body (1) top arranges some exhaust pass (12), described exhaust pass (12) for from down to
The pyramidal structure that upper section is gradually reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620411584.6U CN205613575U (en) | 2016-05-09 | 2016-05-09 | Wet -type electrostatic precipitator with flue gas degree of depth desulfurization function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620411584.6U CN205613575U (en) | 2016-05-09 | 2016-05-09 | Wet -type electrostatic precipitator with flue gas degree of depth desulfurization function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205613575U true CN205613575U (en) | 2016-10-05 |
Family
ID=57026735
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620411584.6U Expired - Fee Related CN205613575U (en) | 2016-05-09 | 2016-05-09 | Wet -type electrostatic precipitator with flue gas degree of depth desulfurization function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205613575U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113493711A (en) * | 2020-04-08 | 2021-10-12 | 中国石油天然气股份有限公司 | Corrosion control device and lean amine liquid regeneration system |
-
2016
- 2016-05-09 CN CN201620411584.6U patent/CN205613575U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113493711A (en) * | 2020-04-08 | 2021-10-12 | 中国石油天然气股份有限公司 | Corrosion control device and lean amine liquid regeneration system |
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| 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: 20161005 Termination date: 20210509 |
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| CF01 | Termination of patent right due to non-payment of annual fee |