CN110449017A - A kind of lye injection promotes the device of WESP removing arsenic selenium lead heavy metal - Google Patents
A kind of lye injection promotes the device of WESP removing arsenic selenium lead heavy metal Download PDFInfo
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- CN110449017A CN110449017A CN201910744495.1A CN201910744495A CN110449017A CN 110449017 A CN110449017 A CN 110449017A CN 201910744495 A CN201910744495 A CN 201910744495A CN 110449017 A CN110449017 A CN 110449017A
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 66
- WCZQJJIXWPUVBL-UHFFFAOYSA-N [Pb].[Se].[As] Chemical compound [Pb].[Se].[As] WCZQJJIXWPUVBL-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000002347 injection Methods 0.000 title claims abstract description 19
- 239000007924 injection Substances 0.000 title claims abstract description 19
- 238000005507 spraying Methods 0.000 claims abstract description 68
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000003546 flue gas Substances 0.000 claims abstract description 42
- 238000005367 electrostatic precipitation Methods 0.000 claims abstract description 22
- 239000007789 gas Substances 0.000 claims abstract description 20
- 239000003595 mist Substances 0.000 claims abstract description 12
- 238000001179 sorption measurement Methods 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 57
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 31
- 239000007921 spray Substances 0.000 claims description 27
- 239000000243 solution Substances 0.000 claims description 20
- 239000012670 alkaline solution Substances 0.000 claims description 18
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 17
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 16
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 16
- 239000011669 selenium Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 9
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 8
- 239000000920 calcium hydroxide Substances 0.000 claims description 8
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 8
- 238000010926 purge Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 5
- 229910052785 arsenic Inorganic materials 0.000 claims description 5
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 5
- 239000003463 adsorbent Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 229910052711 selenium Inorganic materials 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- 239000000356 contaminant Substances 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract 1
- 235000017550 sodium carbonate Nutrition 0.000 description 7
- 229940001593 sodium carbonate Drugs 0.000 description 7
- 239000003245 coal Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002923 metal particle Substances 0.000 description 5
- 239000010865 sewage Substances 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- GGYFMLJDMAMTAB-UHFFFAOYSA-N selanylidenelead Chemical compound [Pb]=[Se] GGYFMLJDMAMTAB-UHFFFAOYSA-N 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/64—Heavy metals or compounds thereof, e.g. mercury
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/55—Compounds of silicon, phosphorus, germanium or arsenic
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The device for promoting WESP removing arsenic selenium lead heavy metal is sprayed the present invention relates to a kind of lye, including cylinder, blowdown area, twin-stage spraying zone, electrostatic precipitation area and adsorption zone are successively arranged in cylinder from top to bottom, exhanst gas outlet is equipped at the top of cylinder, twin-stage spraying zone has the level-one spraying zone and second level spraying zone set gradually from top to bottom, it is equipped with mist eliminating zone between level-one spraying zone and second level spraying zone, is equipped with gas inlet below the level-one spraying zone of cylinder.Compared with prior art, for effective removing of contaminant particle, heavy metal arsenic selenium lead in flue gas in the present invention, flue gas successively passes through level-one spraying zone, mist eliminating zone, second level spraying zone, electrostatic precipitation area, adsorption zone, the wet cottrell of injection lye is sprayed using twin-stage and micrometer level porous absorption carries out collaboration processing to flue gas heavy metal arsenic selenium lead, thus by various forms arsenic selenium lead efficient removal in flue gas, the removal efficiency for improving heavy metal on the whole realizes the ultralow near-zero release of coal-fired flue-gas.
Description
Technical field
The present invention relates to wet cottrell technical field, is sprayed more particularly, to a kind of lye and promote WESP removing arsenic
The system of selenium lead heavy metal.
Background technique
With the development of economy, the demand of industrial production, people's lives to electric power is constantly promoted.Although China is energetically
Energy-saving power generation is advocated, tap a new source of energy equal measures, but energy resource structure of the China based on coal will not change in a short time.
China is maximum coal production state in the world, is also the largest consumption of coal state, coal accounts for 70% in energy resource structure at present
Left and right.However a large amount of SO can be generated after coal burningx、NOxAnd heavy metal, wherein endangering biggish includes arsenic, selenium, lead
Equal heavy metals, these heavy metals are mainly enriched on submicron particles, it is difficult to and controlling facility by Conventional pollution effectively captures, it
Mainly exist in an atmosphere with aerosol form, it is not easily settled, and most of evil heavy metal is difficult to be degraded by microorganisms, it is long
Time stops in an atmosphere, causes high risks to the ecosystem and the mankind.
China starts late about the research how coal-burning power plant's purification device controls heavy metal, in currently available technology
Research direction is mainly the measurement to heavy metal in flue gas content, but how to improve the removal efficiency of heavy metal in flue gas, with
And strengthen the removal effect of flue gas China heavy metal, realize heavy metal efficient removal still without perfect solution.
Therefore, to reduce coal-burning power plant's atmosphere heavy metal pollution object discharge amount, the form of heavy metal in coal-fired process is carried out
Conversion, distribution and control, need to develop various technologies and remove for particulate matter, the heavy metal etc. in flue gas.It is Chinese special
Sharp CN108201974A discloses a kind of wet cottrell, including cleaning assembly and cabinet, the side of cabinet be provided with into
Port is provided with gas outlet at the top of cabinet, is provided with sedimentation basin below cabinet.The shortcomings that technical solution is to heavy metal
Removal process it is single, can not achieve classification processing, cause removal rate not high.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of injections of lye to be promoted
The device of WESP removing arsenic selenium lead heavy metal.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of injection of lye promotes the device of WESP removing arsenic selenium lead heavy metal, including cylinder, in cylinder from top to bottom according to
It is secondary to be equipped with blowdown area, twin-stage spraying zone, electrostatic precipitation area and adsorption zone, exhanst gas outlet, the twin-stage spray are equipped at the top of cylinder
Leaching area has the level-one spraying zone and second level spraying zone set gradually from top to bottom, sets between level-one spraying zone and second level spraying zone
There is mist eliminating zone, is equipped with gas inlet below the level-one spraying zone of cylinder.
Alkaline solution of the level-one spraying zone for flue gas and level-one spraying zone spray as a preferred technical solution,
Contact, removes the heavy metal including arsenic, selenium and lead, and the alkaline solution of level-one spraying zone spray is calcium hydroxide and hydroxide
The mixed-alkali solution of sodium.
The mass ratio of calcium hydroxide and sodium hydroxide is 1:1~3 as a preferred technical solution,.
Alkaline solution of the second level spraying zone for flue gas and second level spraying zone spray as a preferred technical solution,
Contact further removes particulate form, elemental and compound state heavy metal；Second level spraying zone spray alkaline solution be sodium carbonate and
The alkaline solution that sodium bicarbonate powder is prepared, particulate form heavy metal includes the As of particulate formp、SepAnd Pbp, elemental heavy metal packet
Include the Se of elemental0And Pb0, compound state heavy metal includes the As of compound state3+、As5+、Se4+And Pb2+。
The mass ratio of sodium carbonate and sodium bicarbonate is 1:1~3 as a preferred technical solution,.
The alkaline solution of level-one spraying zone and second level spraying zone spray is 10 μm -200 μm as a preferred technical solution,
Alkaline droplet.
The mist eliminating zone is equipped with demister as a preferred technical solution, and the demister is for handling fine dirt
Grain, droplet and the humid gas being saturated by liquid vapour.
The electrostatic precipitation area is equipped with central axis and is alternately arranged and is connected to center as a preferred technical solution,
The anode and cathode of axis, the cathode are equipped with prickle, and anode and cathode follows central axis periodical under the drive of central axis
Rotation.Improve electrostatic precipitation area dust removing effects, further increase arsenic selenium lead etc. after spraying with the particulate form of droplet formation
Removal effect.
Electrostatic precipitation area is additionally provided with purging component as a preferred technical solution, which is pressure-air injection
Device, positioned at the top of cathode and anode, the particle adsorbed on the electrode plate for purging electrostatic precipitation area makes it drop down onto blowdown
Area.
The adsorption zone is equipped with the absorption of micrometer level porous active carbon and sodium bicarbonate as a preferred technical solution,
Bed.The heavy metals such as the arsenic selenium lead of various forms are further adsorbed using sodium bicarbonate and active carbon.
The blowdown area is equipped with ash bucket and sewage draining exit as a preferred technical solution,.For collecting heavy metal arsenic selenium lead
Equal particles.
The device further includes being set between level-one spraying zone and second level spraying zone and arranging as a preferred technical solution,
Deflector above dirty area, the deflector is perforated baffle, for optimizing flue gas flow field uniformity.
As optimal technical scheme, after removal efficiency is decreased obviously, need to carry out replacing adsorbent bed, updating spray liquid etc.
Operation.
When work, flue gas enters level-one spraying zone from gas inlet, and spray liquid used is that calcium hydroxide and sodium hydroxide are mixed
Alkaline solution is closed, flue gas comes into full contact in spraying zone and spray liquid, further using calcium hydroxide and sodium hydroxide mixed alkali liquor
Handle the heavy metals such as arsenic selenium lead；Flue gas enters mist eliminating zone after level-one sprays, and wherein demister handles fine grit, droplet and by
The humid gas of liquid vapour saturation；Flue gas enters second level spraying zone after mist eliminating zone, and spray liquid used is sodium carbonate and bicarbonate
The alkaline solution that sodium powder end is prepared, flue gas comes into full contact in spraying zone and spray liquid, further using sodium carbonate and sodium bicarbonate
Removing particulate form (Asp、Sep、Pbp), elemental (Se0,Pb0) and compound state (As3+,As5+,Se4+,Pb2+) arsenic selenium lead
Equal heavy metals；Flue gas enters electrostatic precipitation area after second level spraying zone, and Anodic and the cathode equipped with prickle are staggered simultaneously
It is connected to central axis, electrode follows central axis periodic rotary when work, improves the dust removing effects in electrostatic precipitation area, can be further
Improve the removal effect after spraying with the particulate form of droplet formation such as arsenic selenium lead；Flue gas enters absorption behind electrostatic precipitation area
Area, the adsorbent bed equipped with micrometer level porous active carbon and sodium bicarbonate are further adsorbed various using sodium bicarbonate and active carbon
The heavy metals such as the arsenic selenium lead of form, the flue gas after final purification are discharged from exhanst gas outlet.
Compared with prior art, the beneficial effects of the present invention are: for contaminant particle, the heavy metal arsenic selenium lead in flue gas
Effective removing, flue gas successively passes through level-one spraying zone, mist eliminating zone, second level spraying zone, electrostatic precipitation area, adsorption zone, using double
The wet cottrell of grade spray injection lye and micrometer level porous absorption carry out collaboration processing to flue gas heavy metal arsenic selenium lead,
To improve the removal efficiency of heavy metal on the whole for various forms arsenic selenium lead efficient removal in flue gas, coal-fired flue-gas is realized
Ultralow near-zero release.
Detailed description of the invention
Fig. 1 is that lye injection of the invention promotes the schematic diagram that WESP removes the device of arsenic selenium lead heavy metal.
In figure, 1 is gas inlet, and 2 be level-one spraying zone, and 3 be demister, and 4 be second level spraying zone, and 5 be anode, and 6 be yin
Pole, 7 be prickle, and 8 be adsorption zone, and 9 be exhanst gas outlet, and 10 be deflector, and 11 be ash bucket, and 12 be sewage draining exit, and 321 be purging portion
Part.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of lye injection promotes the device of WESP removing arsenic selenium lead heavy metal, as shown in Figure 1, including cylinder, in cylinder
It is successively arranged blowdown area, twin-stage spraying zone, electrostatic precipitation area and adsorption zone 8 from top to bottom, is equipped with exhanst gas outlet 9 at the top of cylinder,
Twin-stage spraying zone has the level-one spraying zone 2 and second level spraying zone 4 set gradually from top to bottom, level-one spraying zone 2 and second level spray
It drenches and is equipped with mist eliminating zone between area 4,4 lower section of level-one spraying zone (and being located above blowdown area) of cylinder is equipped with gas inlet 1.
Specifically:
In the present embodiment, level-one spraying zone 2 is contacted for flue gas with the alkaline solution that level-one spraying zone 2 sprays, removing packet
The heavy metal including arsenic, selenium and lead is included, the alkaline solution of level-one spraying zone spray is the mixed base of calcium hydroxide and sodium hydroxide
Property solution.Second level spraying zone 4 is contacted for flue gas with the alkaline solution that second level spraying zone 4 sprays, and further removes particulate form, list
Matter state and compound state heavy metal；The alkaline solution that second level spraying zone 4 sprays is sodium carbonate and the alkalinity that sodium bicarbonate powder is prepared
Solution, particulate form heavy metal include the As of particulate formp、SepAnd Pbp, elemental heavy metal includes the Se of elemental0And Pb0, chemical combination
State heavy metal includes the As of compound state3+、As5+、Se4+And Pb2+.It is preferred that the alkalinity that level-one spraying zone 2 and second level spraying zone 4 spray
The alkaline droplet that solution is 10 μm -200 μm.The mass ratio of further preferred calcium hydroxide and sodium hydroxide is 1:1~3, carbonic acid
The mass ratio of sodium and sodium bicarbonate is 1:1~3.
In the present embodiment, mist eliminating zone is equipped with demister 3, and demister 3 is for handling fine grit, droplet and by liquid vapour
The humid gas of saturation.
In the present embodiment, electrostatic precipitation area is equipped with central axis and is alternately arranged and is connected to the anode 5 and yin of central axis
Pole 6, cathode 6 are equipped with prickle 7, and anode 5 and cathode 6 follow central axis periodic rotary under the drive of central axis.It is further excellent
Electrostatic precipitation area is selected to be additionally provided with purging component 321, which is pressure-air injector, is located at cathode 6 and anode 5
Top, the particle adsorbed on the electrode plate for purging electrostatic precipitation area makes it drop down onto blowdown area.
In the present embodiment, adsorption zone 8 is equipped with the adsorbent bed of micrometer level porous active carbon and sodium bicarbonate.
In the present embodiment, blowdown area is equipped with ash bucket 11 and sewage draining exit 12.For collecting the particles such as heavy metal arsenic selenium lead.
In this example, the device further include be set between level-one spraying zone 2 and second level spraying zone 4 and blowdown area above
Deflector 10, deflector 10 be perforated baffle, for optimizing flue gas flow field uniformity.
Flue gas enters level-one spraying zone 2, flue gas uniform flue gas flow field, level-one after deflector 10 by gas inlet 1 first
The calcium hydroxide and sodium hydroxide drop and partial heavy metal particles that spraying zone 2 ejects, which combine, to be formed biggish particle and sinks
Ash bucket 11 is fallen into, and part heavy metal arsenic selenium lead is further aoxidized；Subsequent flue gas is handled by mist eliminating zone by demister 3 micro-
Dustshot, droplet and the humid gas being saturated by liquid vapour；The heavy metal particles of another part are upwardly into second level spray in flue gas
Area 4 is drenched, is come into full contact with spray liquid sodium carbonate and sodium bicarbonate solution, the huge sum of money such as further arsenic selenium lead for removing various forms
Belong to；Then residue heavy metal particles enter electrostatic precipitation area, are partially adsorbed on electrode plate after corona discharge, electrostatic precipitation
The electrode plate in area is periodically rotated with central axis, and the heavy metal particles adsorbed on electrode are blown to ash by purging component 321
Bucket 11, the heavy metal particles deposited at ash bucket 11 are discharged by sewage draining exit 12；Flue gas enters adsorption zone 8 behind electrostatic precipitation area,
Remaining heavy metal carries out further adsorption treatment, purified flue gas by micrometer level porous active carbon and sodium bicarbonate in flue gas
Finally it is discharged by exhanst gas outlet 9.It by taking heavy metal lead as an example, is tested through simulated flue gas system 5-10 times, lead concentration at smoke inlet
For 30 μ g/m3, simulated experiment global error is ± 5%, and flue gas flow is set as 1.2L/min, sprays and inhales through the device lye
It is 6.23 μ g/m that average lead content is detected in attached flue gas3。
The above-mentioned description to embodiment is for ease of ordinary skill in the art to understand and use the invention.It is ripe
The personnel for knowing art technology obviously easily can make various modifications to these embodiments, and general original described herein
It ought to use in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, this field
Technical staff's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be in guarantors of the invention
Within the scope of shield.
Claims (10)
1. a kind of injection of lye promotes the device of WESP removing arsenic selenium lead heavy metal, including cylinder, which is characterized in that in cylinder from
Under to blowdown area, twin-stage spraying zone, electrostatic precipitation area and adsorption zone (8) is above successively arranged, exhanst gas outlet is equipped at the top of cylinder
(9), the twin-stage spraying zone has the level-one spraying zone (2) and second level spraying zone (4) set gradually from top to bottom, level-one spray
It drenches and is equipped with mist eliminating zone between area (2) and second level spraying zone (4), be equipped with gas inlet (1) below the level-one spraying zone (4) of cylinder.
2. a kind of lye injection according to claim 1 promotes the device of WESP removing arsenic selenium lead heavy metal, feature exists
In the level-one spraying zone (2) is contacted for flue gas with the alkaline solution that level-one spraying zone (2) sprays, and removing includes arsenic, selenium
Alkaline solution with the heavy metal including lead, level-one spraying zone spray is the mixed-alkali solution of calcium hydroxide and sodium hydroxide.
3. a kind of lye injection according to claim 1 promotes the device of WESP removing arsenic selenium lead heavy metal, feature exists
In the second level spraying zone (4) is contacted for flue gas with the alkaline solution that second level spraying zone (4) sprays, further removing
Grain state, elemental and compound state heavy metal；The alkaline solution of second level spraying zone (4) spray is that sodium carbonate and sodium bicarbonate powder are matched
The alkaline solution of system, particulate form heavy metal include the As of particulate formp、SepAnd Pbp, elemental heavy metal includes the Se of elemental0
And Pb0, compound state heavy metal includes the As of compound state3+、As5+、Se4+And Pb2+。
4. a kind of lye injection according to claim 3 promotes the device of WESP removing arsenic selenium lead heavy metal, feature exists
In the mass ratio of sodium carbonate and sodium bicarbonate is 1:1~3.
5. a kind of lye injection according to claim 2 or 3 promotes the device of WESP removing arsenic selenium lead heavy metal, feature
It is, the alkaline droplet that the alkaline solution is 10 μm -200 μm.
6. a kind of lye injection according to claim 1 promotes the device of WESP removing arsenic selenium lead heavy metal, feature exists
In the mist eliminating zone is equipped with demister (3), and the demister (3) is for handling fine grit, droplet and by liquid vapour
The humid gas of saturation.
7. a kind of lye injection according to claim 1 promotes the device of WESP removing arsenic selenium lead heavy metal, feature exists
In the electrostatic precipitation area is equipped with central axis and is alternately arranged and is connected to the anode (5) and cathode (6) of central axis, institute
The cathode (6) stated is equipped with prickle (7), and anode (5) and cathode (6) follow central axis periodic rotary under the drive of central axis.
8. a kind of lye injection according to claim 7 promotes the device of WESP removing arsenic selenium lead heavy metal, feature exists
In electrostatic precipitation area is additionally provided with purging component (321), which is pressure-air injector, is located at cathode (6)
With the top of anode (5), the particle adsorbed on the electrode plate for purging electrostatic precipitation area makes it drop down onto blowdown area.
9. a kind of lye injection according to claim 1 promotes the device of WESP removing arsenic selenium lead heavy metal, feature exists
In the adsorption zone (8) is equipped with the adsorbent bed of micrometer level porous active carbon and sodium bicarbonate.
10. a kind of lye injection according to claim 1 promotes the device of WESP removing arsenic selenium lead heavy metal, feature exists
In the device further includes the deflector being set between level-one spraying zone (2) and second level spraying zone (4) and above blowdown area
(10), the deflector (10) is perforated baffle, for optimizing flue gas flow field uniformity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910744495.1A CN110449017A (en) | 2019-08-13 | 2019-08-13 | A kind of lye injection promotes the device of WESP removing arsenic selenium lead heavy metal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910744495.1A CN110449017A (en) | 2019-08-13 | 2019-08-13 | A kind of lye injection promotes the device of WESP removing arsenic selenium lead heavy metal |
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| CN110449017A true CN110449017A (en) | 2019-11-15 |
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| CN201910744495.1A Pending CN110449017A (en) | 2019-08-13 | 2019-08-13 | A kind of lye injection promotes the device of WESP removing arsenic selenium lead heavy metal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111036061A (en) * | 2019-12-11 | 2020-04-21 | 黄静勤 | Refine industrial soldering tin gas cleaning treatment equipment that heavy metal adds anti- |
| WO2021103226A1 (en) * | 2019-11-26 | 2021-06-03 | 华中科技大学 | Basic group adsorbent for capturing selenium in coal-fired flue gas and preparation method therefor |
| CN113351370A (en) * | 2021-06-30 | 2021-09-07 | 上海电力大学 | Composite electrostatic dust collection device for removing arsenic, selenium and lead in flue gas |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2888538A1 (en) * | 2015-04-21 | 2016-10-21 | Hisham Younis | A non-selective and non-catalytic flue gas treatment system and method |
| CN206996173U (en) * | 2017-07-07 | 2018-02-13 | 环境保护部华南环境科学研究所 | A kind of waste gas multi-pollutant multi- scenarios method synergistic purification device |
| CN109013058A (en) * | 2018-09-27 | 2018-12-18 | 上海电力学院 | A kind of high-efficient wet-type electrostatic precipitator catalysis oxidation joint removing heavy metal device |
| CN109224806A (en) * | 2018-10-31 | 2019-01-18 | 珠海市斗门区永兴盛环保工业废弃物回收综合处理有限公司 | A kind of waste gas purification technique and purification system |
| CN210845850U (en) * | 2019-08-13 | 2020-06-26 | 上海电力大学 | Alkali liquor injection lifting WESP device for removing arsenic, selenium and lead heavy metals |
-
2019
- 2019-08-13 CN CN201910744495.1A patent/CN110449017A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2888538A1 (en) * | 2015-04-21 | 2016-10-21 | Hisham Younis | A non-selective and non-catalytic flue gas treatment system and method |
| CN206996173U (en) * | 2017-07-07 | 2018-02-13 | 环境保护部华南环境科学研究所 | A kind of waste gas multi-pollutant multi- scenarios method synergistic purification device |
| CN109013058A (en) * | 2018-09-27 | 2018-12-18 | 上海电力学院 | A kind of high-efficient wet-type electrostatic precipitator catalysis oxidation joint removing heavy metal device |
| CN109224806A (en) * | 2018-10-31 | 2019-01-18 | 珠海市斗门区永兴盛环保工业废弃物回收综合处理有限公司 | A kind of waste gas purification technique and purification system |
| CN210845850U (en) * | 2019-08-13 | 2020-06-26 | 上海电力大学 | Alkali liquor injection lifting WESP device for removing arsenic, selenium and lead heavy metals |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021103226A1 (en) * | 2019-11-26 | 2021-06-03 | 华中科技大学 | Basic group adsorbent for capturing selenium in coal-fired flue gas and preparation method therefor |
| CN111036061A (en) * | 2019-12-11 | 2020-04-21 | 黄静勤 | Refine industrial soldering tin gas cleaning treatment equipment that heavy metal adds anti- |
| CN113351370A (en) * | 2021-06-30 | 2021-09-07 | 上海电力大学 | Composite electrostatic dust collection device for removing arsenic, selenium and lead in flue gas |
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