CN106964224A - A kind of dedusting demister and its water circulation system - Google Patents
A kind of dedusting demister and its water circulation system Download PDFInfo
- Publication number
- CN106964224A CN106964224A CN201710052131.8A CN201710052131A CN106964224A CN 106964224 A CN106964224 A CN 106964224A CN 201710052131 A CN201710052131 A CN 201710052131A CN 106964224 A CN106964224 A CN 106964224A
- Authority
- CN
- China
- Prior art keywords
- cyclone
- dedusting demister
- inner cylinder
- demister
- dedusting
- Prior art date
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 23
- 239000003546 flue gas Substances 0.000 claims description 23
- 230000001376 precipitating effect Effects 0.000 claims description 13
- 125000004122 cyclic group Chemical group 0.000 claims description 11
- 230000003009 desulfurizing effect Effects 0.000 claims description 6
- 239000012141 concentrate Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 2
- 239000003595 mist Substances 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 11
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 10
- 238000006477 desulfuration reaction Methods 0.000 description 7
- 230000023556 desulfurization Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- -1 nitrite anions Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
The present invention relates to a kind of dedusting demister, including Venturi scrubber, cyclone and the cyclone separator being sequentially connected from bottom to top.Dedusting demister in the present invention, simple in construction, easy for installation, system energy consumption is low, reliable, cheap, can be while depth removes droplet and dust in wet desulphurization tail gas.Further, the invention further relates to a kind of water circulation system of dedusting demister.
Description
Technical field
The present invention relates to field of environmental engineering, in particular it relates to a kind of dedusting demister and its water circulation system.
Background technology
Desulfurization, refer to fix the element sulphur in coal with methods such as calcium bases prevents from generating SO2 during burning as solid.At present
Sulfur method can be divided into by the dry and wet state of absorbent and desulfurization product in sweetening process：Wet method, dry method and half-dried (semi-moist)
Method.Wet Flue Gas Desulfurization Technique be with solution or slurries containing absorbent under wet condition desulfurization and processing desulfurization product, this method
Due to having the advantages that desulphurization reaction speed is fast, equipment is simple, desulfuration efficiency is high and is widely used in boiler smoke or industry
Tail gas pollution is administered.
Wet Flue Gas Desulfurization Technique is both needed to install the small liquid produced during demister removal spray after spray washing purification
Drop；But either Flat defroster or ridge type demister to less than be less than in 5um drops and flue gas 5um dust and
The removal efficiency for constituting the PM2.5 finely ground particles such as sulfate radical, inferior sulfate radical, nitrate anion, the nitrite anions of aerosol is difficult
Meet the requirement of environmental protection.
To meet environmental requirement strict all the more, wet desulphurization device rear end is both needed to install Wet type electric dust-removing device progress additional deeply
Degree purification.Although wet-esp can effectively remove finely ground particles, wet-esp has process device structure complexity,
Installation difficulty, initial investment is high, the problems such as operation energy consumption height.
Therefore, it is necessary to a kind of dedusting demister be proposed, so as to solve above-mentioned deficiency of the prior art.
The content of the invention
A series of concept of reduced forms is introduced in Summary, this will enter in embodiment part
One step is described in detail.The Summary of the present invention is not meant to attempt to limit technical scheme claimed
Key feature and essential features, the protection domain for attempting to determine technical scheme claimed is not meant that more.
In order to solve at least one of above-mentioned many deficiencies of the prior art, the invention discloses a kind of dedusting demisting
Device, wherein the dedusting demister is arranged in desulfurizing tower and positioned at wet desulphurization spraying layer and primary folded plate demister
Downstream, wherein described device include Venturi scrubber, cyclone and the cyclone separator being sequentially connected from bottom to top, wherein institute
State Venturi scrubber to be made up of Venturi tube and sprayer, wherein the Venturi tube includes the receipts being sequentially connected from bottom to top
The draw, trunnion and expansion pipe, wherein the sprayer is arranged on below the arrival end of the collapsible tube so that from the spraying
The drop and flue gas of device can be sufficiently mixed in trunnion；The cyclone includes cylindric outer barrel, inner cylinder and company
The blade of the outer barrel and inner cylinder is connect, wherein tangential direction of the blade along the inner cylinder is evenly spaced apart to be arranged in described
On the periphery of cylinder, the linear motion vertically that will flow through the flue gas of the cyclone is converted to rotation around the inner cylinder
Transhipment is dynamic；The cyclone separator includes cylinder and on the outside of cylinder, consistent with the tangential direction of flue gas rotary motion
The opening being connected with external environment condition is offered above multiple flutings, the cylinder.
Dedusting demister in the present invention, compared with prior art, its is simple in construction, easy for installation, system energy
Consumption is low, reliable, cheap, can be while depth removes droplet and dust in wet desulphurization tail gas.
Preferably, the length configuration of the trunnion of the Venturi tube into the air velocity made at the trunnion be highest
Value.
Preferably, the air velocity is 30 meter per seconds.
Preferably, one end of the inner cylinder of the cyclone is configured to tapered portion.
Preferably, the blade of the cyclone is made up of bent plate or straight panel.
Preferably, the number of the fluting of the cyclone separator is 2 to 4.
It is heavy including dedusting demister, concentration the invention further relates to a kind of water circulation system of dedusting demister
Shallow lake tank and cyclic water tank, wherein, the fluting of the cyclone separator is connected to the concentrating and precipitating tank, the concentration via pipeline
The bottom of settling tank is provided with the concentrate opening for being communicated to external environment condition, and the top of the concentrating and precipitating tank is provided with clarified solution
Outlet, the clarified solution outlet is connected to the cyclic water tank by pipeline, and the cyclic water tank, which is provided with, is connected to the text
The pipeline of the sprayer of washer in mound.
Brief description of the drawings
The drawings below of the embodiment of the present invention is used to understand the present invention in this as the part of the present invention.Shown in accompanying drawing
Embodiments of the present invention and its description, for explaining the principle of the present invention.In the accompanying drawings,
Fig. 1 is the schematic diagram of the dedusting demister according to the present invention；
The sectional view of the cyclone in dedusting demister in Fig. 2 bitmaps 1；
Fig. 3 is the schematic diagram of the water circulation system with dedusting demister.
Description of reference numerals：
1st, dedusting demister 2, Venturi scrubber 3, cyclone 4, cyclone separator 5, desulfurizing tower 6,
Concentrating and precipitating tank 7, cyclic water tank 8, concentrate opening 9, clarified solution outlet 10, water supplement port 2.1, Venturi tube
2.2nd, sprayer 2.11, collapsible tube 2.12, trunnion 2.13, expansion pipe 3.1, outer barrel 3.2, inner cylinder 3.3, blade
4.1st, cylinder 4.2, fluting 4.3, opening
Embodiment
In the following description, a large amount of concrete details are given to provide more thorough understanding of the invention.So
And, it will be apparent to one skilled in the art that the embodiment of the present invention can be without one or more of these details
And be carried out.In other examples, in order to avoid obscuring with the embodiment of the present invention, for more well known in the art
Technical characteristic is not described.
In order to thoroughly understand the embodiment of the present invention, detailed structure will be proposed in following description.Obviously, the present invention is real
The execution for applying example is not limited to the specific details that those skilled in the art is familiar with.Presently preferred embodiments of the present invention is retouched in detail
State it is as follows, but except these detailed description in addition to, the present invention can also have other embodiment.
According to an aspect of the present invention there is provided a kind of dedusting demister 1, the wherein dedusting demister 1 is arranged on
In desulfurizing tower 5 and positioned at the downstream of the wet desulphurization spraying layer and primary folded plate demister.So that flue gas is rolled over by primary
Plate demister removes the higher bulky grain drop of dust concentration, and the dedusting demister 1 is flowed through from bottom to up.
As shown in figure 1, the dedusting demister 1 includes Venturi scrubber 2, the cyclone 3 being sequentially connected from bottom to top
With cyclone separator 4.Wherein the Venturi scrubber 2 is used to trap dust, and it is made up of Venturi tube 2.1 and sprayer 2.2.
Specifically, the Venturi tube 2.1 includes the collapsible tube 2.11, trunnion 2.12 and expansion pipe 2.13 being sequentially connected from bottom to top.
The wherein inner wall smooth of the Venturi tube 2.1, so that when flue gas passes through collapsible tube, velocity of flue gas subtracts with the sectional area of pipeline
It is small and increase, the pressure energy of air-flow is gradated as kinetic energy.Preferably, Venturi tube 2.1 is designed at trunnion 2.12
The speed of air-flow is maximum.It is further preferred that the speed maximum is up to 30m/s, so that the static pressure of flue gas be dropped to
It is minimum.
Further, sprayer 2.2 is arranged on to the lower section of the arrival end of collapsible tube 2.11 so that the liquid from sprayer 2.2
Drop and flue gas can be sufficiently mixed in trunnion 2.12.Thus, the water droplet that sprayer 2.2 sprays is impacted by ash-laden gas
It is set further to be atomized into thinner droplet.Gas-liquid two-phase can be sufficiently mixed in trunnion 2.12.Powder dust particle and liquid
The efficiency of drop collision sedimentation is higher, and is condensed into bigger dust-laden drop in expansion pipe 2.13, is conducive to back segment demister gas-liquid
Separation.
Dust-laden flue gas containing drop by Venturi tube 2.1 enters cyclone 3.As shown in Fig. 2 wherein the cyclone 3 is wrapped
Include the blade 3.3 of the outer barrel 3.1, inner cylinder 3.2 and connection outer barrel 3.1 and inner cylinder 3.2 of cylindrical shape.Preferably, as shown in Fig. 2 outside
Cylinder 3.1 is configured to cylinder, and inner cylinder 3.2 is configured to the cylinder that one end is tapered portion.The wherein blade 3.3 is along inner cylinder 3.2
Tangential direction is evenly spaced apart to be arranged on the periphery of inner cylinder 3.2, will flow through vertically straight of the flue gas of cyclone 3
Line motion is converted to the rotary motion around inner cylinder 3.2.Preferably, the blade 3.3 of the cyclone 3 is made up of bent plate or straight panel.
As shown in Figure 2, the cyclone 3 can change into longitudinal kinetic energy (speed) of flue gas centrifugation kinetic energy (speed).While part cigarette
The kinetic energy of gas is depleted due to the stop of cyclone 3.Dust in flue gas after cyclone 3 further by liquid droplet capture, together
When drop further condense.
After cyclone 3, flue gas enters the cyclone separator 4 for being located at the top of cyclone 3.As shown in figure 1, the whirlwind
Separator 4 includes the cylinder 4.1 of cylinder and positioned at the outside of cylinder 4.1, consistent with the tangential direction of flue gas rotary motion
Multiple flutings 4.2.Preferably, the number of the fluting 4.2 is 2-4, and the fluting 4.2 can uniformly divide along the periphery of cylinder 4.1
Cloth.The top of the cylinder 4.1 offers the opening 4.3 being connected with external environment condition, and the opening can be similar flange gasket ring
Form.Thus, the dust-containing liquid in flue gas is dropped in cyclone separator 4 and got rid of due to centrifugal force on the barrel of cyclone separator 4
Liquid film, so as to be captured by liquid film.Liquid film upwards, dedusting demisting dress is thrown away at fluting 4.2 with flow rotation by centrifugal force
1 is put, and desulfurizing tower 5 is finally taken away by supporting water circulation system, filtering Posterior circle is utilized.Flue gas after purification is through cyclonic separation
The opening 4.3 of the top of device 4 enters chimney and discharged.
It follows that the dedusting demister part utilizes trapping as described above, cohesion, captures principle by wet desulphurization tail
Dust and droplet in portion's flue gas are removed, and verify that efficiency of dust collection is high, stable through experiment and Practical Project.That is, with existing skill
Art is compared, and its is simple in construction, easy for installation, and system energy consumption is low, reliable, cheap, depth can remove wet method simultaneously
Droplet and dust in desulfidation tail gas.
Figure 3 illustrates the water circulation system for including the dedusting demister 1.As shown in figure 3, the water circulation system bag
Include dedusting demister 1, concentrating and precipitating tank 6 and cyclic water tank 7.As shown in figure 3, being provided with multiple rows arranged side by side in desulfurizing tower 5
The dedusting demister 1 of cloth.The body of the wherein sprayer 2.2 and device of the dedusting demister 1 is arranged in correspondence with.The spraying
The feed pipe of device 2.2 is connected to cyclic water tank 7.Wherein, specifically, the fluting of the cyclone separator 4 of the dedusting demister 1
4.2 are connected to concentrating and precipitating tank 6 via pipeline, the waste water after dedusting is flowed into concentrating and precipitating tank 6 in the presence of deadweight.Dense
The bottom of contracting settling tank 6 is provided with the concentrate opening 9 for being communicated to external environment condition, it is preferable that the opening 9 is connected to melt pit pond.
After concentrating and precipitating, the concentrate in concentrating and precipitating tank 6 is flowed into melt pit pond through opening 9, eventually enters at the sewage of place
Reason station.Meanwhile, the top of concentrating and precipitating tank 6 is provided with clarified solution outlet 8, and clarified solution outlet 8 is connected to circulation by pipeline
Water tank 7 and cyclic water tank 7 are provided with the pipeline for the sprayer 2.2 for being connected to Venturi scrubber 2.Thus, clarified solution is by deadweight
Cyclic water tank is flowed into, after filtering again, the sprayer of depth dedusting demisting section is returned by circulating pump, is recycled.
The present invention is illustrated by above-described embodiment, but it is to be understood that, above-described embodiment is only intended to
Citing and the purpose of explanation, and be not intended to limit the invention in described scope of embodiments.In addition people in the art
Member according to the teachings of the present invention it is understood that the invention is not limited in above-described embodiment, can also make more kinds of
Variants and modifications, these variants and modifications are all fallen within scope of the present invention.
Claims (8)
1. a kind of dedusting demister, wherein the dedusting demister is arranged in desulfurizing tower and positioned at wet desulphurization spraying layer
With the downstream of primary folded plate demister, it is characterised in that described device include be sequentially connected from bottom to top Venturi scrubber,
Cyclone and cyclone separator,
Wherein described Venturi scrubber is made up of Venturi tube and sprayer, wherein the Venturi tube include from bottom to top according to
Collapsible tube, trunnion and the expansion pipe of secondary connection, wherein the sprayer is arranged on below the arrival end of the collapsible tube so as to come
It can be sufficiently mixed from the drop and flue gas of the sprayer in trunnion；
The cyclone includes the blade of cylindric outer barrel, inner cylinder and the connection outer barrel and inner cylinder, wherein the blade edge
The tangential direction of the inner cylinder is evenly spaced apart to be arranged on the periphery of the inner cylinder, will flow through the flue gas of the cyclone
Linear motion vertically is converted to the rotary motion around the inner cylinder；
The cyclone separator includes cylinder and on the outside of cylinder, consistent with the tangential direction of flue gas rotary motion multiple
The opening being connected with external environment condition is offered above fluting, the cylinder.
2. dedusting demister as claimed in claim 1, it is characterised in that the length structure of the trunnion of the Venturi tube
It is peak to cause to make the air velocity at the trunnion.
3. dedusting demister as claimed in claim 2, it is characterised in that the air velocity is 30 meter per seconds.
4. dedusting demister as claimed in claim 1, it is characterised in that one end of the inner cylinder of the cyclone is configured to cone
Shape portion.
5. dedusting demister as claimed in claim 1, it is characterised in that the blade of the cyclone is by bent plate or straight panel
It is made.
6. dedusting demister as claimed in claim 1, it is characterised in that the number of the fluting of the cyclone separator be 2 to
4.
7. a kind of water circulation system of dedusting demister, is removed including the dedusting as any one of claim 1-6
Mist device, concentrating and precipitating tank and cyclic water tank, it is characterised in that the fluting of the cyclone separator is connected to described via pipeline
Concentrating and precipitating tank, the bottom of the concentrating and precipitating tank is provided with the concentrate opening for being communicated to external environment condition, the concentrating and precipitating
The top of tank is provided with clarified solution outlet, and the clarified solution outlet is connected to the cyclic water tank, the recirculated water by pipeline
Case is provided with the pipeline for the sprayer for being connected to the Venturi scrubber.
8. water circulation system as claimed in claim 7, it is characterised in that the upper end of the cyclic water tank is additionally provided with water supplement port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710052131.8A CN106964224A (en) | 2017-01-24 | 2017-01-24 | A kind of dedusting demister and its water circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710052131.8A CN106964224A (en) | 2017-01-24 | 2017-01-24 | A kind of dedusting demister and its water circulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106964224A true CN106964224A (en) | 2017-07-21 |
Family
ID=59334748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710052131.8A Pending CN106964224A (en) | 2017-01-24 | 2017-01-24 | A kind of dedusting demister and its water circulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106964224A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108159850A (en) * | 2017-12-25 | 2018-06-15 | 刘毅 | A kind of cold stripper of water mist fluid and dehumidifying demister and its dehumidifying defogging method |
| CN110339943A (en) * | 2018-04-04 | 2019-10-18 | 襄阳九鼎昊天环保设备有限公司 | A kind of high-performance minimum discharge equipment |
| CN118454389A (en) * | 2024-07-15 | 2024-08-09 | 北京利德衡环保工程有限公司 | Tube bundle type phase-change coupling dust removal separation process system |
| CN118491239A (en) * | 2024-07-15 | 2024-08-16 | 北京利德衡环保工程有限公司 | Cyclone phase-change composite integrated dust remover |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108159850A (en) * | 2017-12-25 | 2018-06-15 | 刘毅 | A kind of cold stripper of water mist fluid and dehumidifying demister and its dehumidifying defogging method |
| CN110339943A (en) * | 2018-04-04 | 2019-10-18 | 襄阳九鼎昊天环保设备有限公司 | A kind of high-performance minimum discharge equipment |
| CN118454389A (en) * | 2024-07-15 | 2024-08-09 | 北京利德衡环保工程有限公司 | Tube bundle type phase-change coupling dust removal separation process system |
| CN118491239A (en) * | 2024-07-15 | 2024-08-16 | 北京利德衡环保工程有限公司 | Cyclone phase-change composite integrated dust remover |
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