CN103357235A - Multi-pollutant combined control device - Google Patents
Multi-pollutant combined control device Download PDFInfo
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- CN103357235A CN103357235A CN2013103104101A CN201310310410A CN103357235A CN 103357235 A CN103357235 A CN 103357235A CN 2013103104101 A CN2013103104101 A CN 2013103104101A CN 201310310410 A CN201310310410 A CN 201310310410A CN 103357235 A CN103357235 A CN 103357235A
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- combined control
- sink
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- pipe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
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Abstract
The invention provides a multi-pollutant combined control device. the device is designed reasonably and ingeniously, can be used for deep emission reduction of a plurality of pollutants and high-efficiency purification to remove pollutants such as SO2, NOx, mercury, flue dust (including PM2.5) and the like in flue gas. The device comprises an inlet flue, an outlet flue, a washing tank, a purge system and an ash removal system, and also comprises a dry-wet air flow spliter plate and a plurality of branch pipe units. The inlet flue and the outlet flue are parallelly arranged, and adjacent sides of the inlet flue and the outlet flue are separated by the dry-wet air flow spliter plate which is provided with several air vents. The lower portion of the outlet flue is connected with the washing tank. Several branch pipe units are vertically installed inside the washing tank. Each branch pipe unit is a dual-cannula structure: an inner tube is formed by connecting a tubulous mote filter unit with a gas-guide tube; an outer tube is formed by connecting the gas-guide tube with a micropore bubble generating device; the upper end of the dual-cannula structure is connected with the dry-wet air flow spliter plate; and the lower end of the dual-cannula structure is connected with the bottom of the washing tank.
Description
Technical field
The present invention relates to a kind of Novel flue gas multi-pollutant Combined Control Unit, belong to the flue gases purification field.
Background technology
Remove flue dust, the SO that has included control at present in the flue gas pollutant of coal-burning power plant
2, NO
xOutside, the GB13223-2011 standard of new revision is also included mercury in the binding indicator control first, and has further reduced flue dust, SO
2, NO
xEmission limit, become the tightest environmental protection standard in the whole world.In addition, PM
2.5Emission control problem Deng fine particulates also enters atmosphere pollution control subject under discussion.
Traditional dedusting, desulphurization and denitration facility are limited in the face of the new standard room for promotion, maybe will pay expensive transformation cost, and to such as mercury, PM
2.5Also can't effectively solve etc. new pollutant control problem.
Summary of the invention
The invention provides a kind ofly for above-mentioned prior art situation, a kind of multi-pollutant Combined Control Unit is provided, this installs reasonable in design ingenious, can the degree of depth reduce discharging multiple pollutant, and purifying smoke efficient is high, to the SO in the flue gas
2, NO
x, mercury, PM
2.5Pollutant can effectively be removed.
Concrete technical scheme of the present invention is as follows:
The multi-pollutant Combined Control Unit comprises gas approach, exhaust pass, sink, purging system and soot cleaning system, also comprises dried wet gas current demarcation strip and a plurality of pipe units,
Described gas approach and exhaust pass are parallel to be arranged, and both sides adjacent are also separated by dried wet gas current demarcation strip, have several passages on this dried wet gas current demarcation strip; The bottom of exhaust pass is connected with sink;
Some pipe units vertically are installed in the described sink, and each pipe unit upper end is connected with dried wet gas current demarcation strip, and the lower end links to each other with the sink bottom; Each pipe unit is double-tube structure, its inner sleeve is formed by connecting by tubulose filtering device for filtering extremely fine dust and ash guiding pipe upper-lower seal, suitable for reading and the dried wet gas current demarcation strip of filtering device for filtering extremely fine dust connect and with the corresponding adaptive installation of passage, the ash guiding pipe end opening passes the sink bottom surface and is connected with soot cleaning system; Its outer tube is formed by connecting by wireway and microporous bubble generating means, and wireway is suitable for reading to be connected on the dried wet gas current demarcation strip, and microporous bubble generating means bottom is connected in the bottom of sink.
Described filtering device for filtering extremely fine dust adopts the mouse cage structure of filter bag of tubulose, and the filter bag material can adopt the conventional dedusting filtering bag materials commonly used such as glass mat.
Described filtering device for filtering extremely fine dust can adopt the microporous membrane material of stainless steel, pottery or macromolecule material, micropore size 0.1～1 μ m, film thickness 0.1～2mm.
Described microporous bubble generating means all is hollow tubular structure, and barrel is provided with microcellular structure, adopts stainless steel, pottery or macromolecular material to make micropore size 0.01～10 μ m.
Described gas approach place also is provided with steam coalescence system, and this system is comprised of steam spraying gun and distributor pipe.
Also be provided with overflow pipe on the cell wall of described sink top.
Dried wet gas current demarcation strip upper vent hole and filtering device for filtering extremely fine dust and ash guiding pipe bore, quantity are suitable, and are evenly distributed.The exhaust gas volumn that the spacing, aperture of arranging processed as required considers definite, and the perforated area ratio is generally 0.1-0.5, pore diameter range 8-400mm.
Described purging system comprises air supply unit and transfer pipeline, and each passage position of corresponding dried wet gas current demarcation strip is respectively equipped with a puff prot on this transfer pipeline.
Described soot cleaning system comprises air supply system, transfer pipeline, ash bucket and unloading valve, and described every ash guiding pipe is connected with ash bucket, and ash bucket is communicated with transfer pipeline through unloading valve.
Described kitchen sink also is furnished with the cleaning solution circulatory system.
The present invention has following advantage compared to existing technology:
The atmosphere pollutants emission standards GB13223-2011 that promulgates along with new revision puts into effect SO
2, the emission limits such as NOx, flue dust have become the tightest standard in the whole world.The tradition individual event is administered technology and is equipped in the aspects such as emission limit, technological transformation difficulty, layout occupation of land and all meets with technical bottleneck, and investment and old of operation maintenance are high.And apparatus of the present invention performance can satisfy the atmosphere pollutants emission standards GB13223-2011 that new revision is promulgated fully.The present invention adopts a cover flue gas deep purifying treating apparatus can realize high-effective dust-removing, desulphurization and denitration, demercuration integrated function, can substitute denitrating flue gas, dedusting, the desulfurization three large facilities of traditional thermal power plant complexity, system is simple, operation maintenance is convenient, take up an area less, reduced investment.
Apparatus of the present invention have designed a pipe unit, effectively remove the pollutant in the flue gas, and wherein the each several part major function is as follows:
1, micronic dust filters and forms the pollutant cake layers such as adsoption catalysis oxidation heavy metal.Adopt filtering device for filtering extremely fine dust can remove various fine particulates in the flue gas, comprise PM2.5 etc.The dust that is trapped can form thin dust filter cake adsorption layer, there is absorption to hold back or the catalytic oxidation function to the pollutants such as heavy metal in the flue gas, the heavy metals such as meeting capture or partial oxidation mercury, the part in the flue gas is weighed the element pollution thing to be had certain reduction of discharging or assists reduction of discharging contribution.Deashing for the benefit of, the air inlet side surface need carry out polishing when adopting metal material, so that smooth surface.
2, the microbubble dispersal device occurs to adopt in microbubble, flue gas is seen through micropore ceramics, stainless steel or polymeric membrane, enter liquid phase behind the generation micro-bubble, be distributed in washing slurries or the solution, improve to greatest extent the gas-liquid contact area, but the detersive efficiency of Effective Raise pollutant.
3, gas-liquid is separated a pipe unit and is adopted a double-tube structure, the film pipe of bottom overcoat microbubble dispersal device, in establish ash guiding pipe.When the device operation, gas is pressed into sink with the film pipe of microbubble dispersal device and the liquid between the ash guiding pipe, and the pollutant in the microbubble washing flue gas occurs; Liquid when device is stopped transport be because self pressure can see through the microbubble dispersal device, but separated by ash guiding pipe, and the height of ash guiding pipe is higher than the film pipe height of microbubble dispersal device.
Description of drawings:
Fig. 1 is schematic diagram of the present invention.
Fig. 2 is structural representation of the present invention.
Fig. 3 is SO under the various inlet pressure in the application example one
2, NOx, dust removal efficiency comparison diagram.
Among the figure: the 1-gas approach; The 2-exhaust pass; The 3-sink; The dried wet gas current demarcation strip of 4-; 5-tubulose filtering device for filtering extremely fine dust; The 6-ash guiding pipe; The 7-wireway; 8-microporous bubble generating means; The 9-steam spraying gun; The 10-distributor pipe; The 11-overflow pipe; The 12-ash bucket; The 13-insertion plate door; 14-storehouse pump; The 15-unloading valve; The 16-transfer pipeline; The 17-cleaning solution.
The specific embodiment;
Below in conjunction with accompanying drawing the present invention is made further description:
As shown in Figure 1 and Figure 2, multi-pollutant Combined Control Unit of the present invention comprises gas approach 1, exhaust pass 2, sink 3, purging system and soot cleaning system, also comprises dried wet gas current demarcation strip 4 and a plurality of pipe units.
Each pipe unit is double-tube structure, its inner sleeve is formed by connecting by tubulose filtering device for filtering extremely fine dust 5 and ash guiding pipe 6 upper-lower seal, suitable for reading and the dried wet gas current demarcation strip 4 of tubulose filtering device for filtering extremely fine dust 5 connect and with the corresponding adaptive installation of passage, ash guiding pipe 6 end openings pass sink 3 bottom surfaces and are connected with soot cleaning system; Its outer tube is formed by connecting by wireway 7 and microporous bubble generating means 8, wireway 7 suitable for reading being connected on the dried wet gas current demarcation strip 4, and microporous bubble generating means 8 bottoms are connected in the bottom of sink 3.Sink 3 also is furnished with the cleaning solution circulatory system.Each several part connects employing and is tightly connected.
Tubulose filtering device for filtering extremely fine dust 5 adopts the mouse cage structure of filter bag of tubulose, and the filter bag material can adopt conventional glass mat.Filtering device for filtering extremely fine dust can adopt the microporous membrane material of stainless steel, pottery or macromolecule material, micropore size 0.1～1 μ m, film thickness 0.1～2mm.The microporous bubble generating means all is hollow tubular structure, and barrel is provided with microcellular structure, adopts stainless steel, pottery or macromolecular material to make micropore size 0.01～10 μ m.
The gas approach place also is provided with steam coalescence system, and this system is comprised of steam spraying gun and distributor pipe.Also be provided with overflow pipe on the cell wall of sink top.Dried wet gas current demarcation strip upper vent hole and filtering device for filtering extremely fine dust and ash guiding pipe bore, quantity are suitable, and are evenly distributed.Described purging system comprises air supply unit and transfer pipeline, and each passage position of corresponding dried wet gas current demarcation strip is respectively equipped with a puff prot on this transfer pipeline.
Soot cleaning system comprises air supply system, transfer pipeline, ash bucket and unloading valve, and described every ash guiding pipe is connected with ash bucket, and ash bucket is communicated with transfer pipeline through unloading valve.
1, the entry and exit flue of apparatus of the present invention is mainly used in the flue gas guiding, and the dry flue gas that exhaust pass is generally boiler emission adopts ordinary carbon steel to get final product, and the outlet flue gas is the wet flue gas behind the washing, purifying, consider the anti-corrosion measure of appropriateness.
2, sink is the steel construction container, can adopt anticorrosive anti-wear dual phase steel or other alloys, also can adopt ordinary carbon steel inside lining anti-corrosive material, and anti-corrosion material can adopt the glass flake of abrasion-proof corrosion-proof; Or directly adopt the container of glass steel material.A pipe unit of serial core is installed in the sink, and the flue gas before and after a pipe unit top will be purified by dried wet gas current demarcation strip is separated.Prop up the pipe unit bottom and be connected with sink, the inner sleeve of a pipe unit can be communicated with inlet flue gas respectively, and is communicated with ash bucket.
3, propping up pipe unit is inside and outside double-tube structure, and the tubulose filtering device for filtering extremely fine dust is equipped with on the top of inner sleeve, and the bottom is ash guiding pipe, between adopt and to be threaded or plug-in type is gluing connects; Outer tube top is wireway, and the bottom is the microbubble dispersal device, between adopt and be threaded or gluing connecing.
(1) the tubulose filtering device for filtering extremely fine dust can adopt mouse cage to cover structure of filter bag, can adopt the conventional filter bag materials such as glass fibre, SR 0.1-1500Pa.Also can adopt stainless steel, the pottery of low SR, the microporous barrier of macromolecule material, micropore diameter 0.1～1 μ m, film thickness 0.1～2mm, membrane resistance 0.04～75kPa.
(2) microbubble dispersal device 8 adopts the microporous barrier of stainless steel, pottery or the macromolecule material of heatproof, anticorrosive anti-wear, micropore size 0.1～10 μ m.The microporous barrier film thickness 0.1～2mm of macromolecule material, membrane resistance 0.1～50kPa.
(2) ash guiding pipe adopts heat-proof corrosion resistant abrasion-proof stainless steel material, or adopts general worker's stainless steel, and outer surface applies heatproof anticorrosion antiwear glass flake.
(3) wireway is for the flue gas behind the guiding Chalk-dust filtering, and with purify after the water conservancy diversion sealed steel pipe of flue gas isolation usefulness, consider the wet flue gas after contact purifies, this tubing matter should be considered corresponding heat-proof corrosion resistant measure, generally adopts anticorrosive anti-wear stainless steel or alloy material to make.
(4) dried wet gas current demarcation strip is used for connecting and fixing each pipe unit, and separates the flue gas that does not purify and purified.
4, the soot blower system in apparatus of the present invention is mainly used in the purging deashing of filtering device for filtering extremely fine dust, generally adopts compressed air to purge.
5, the steam coalescence system in apparatus of the present invention is comprised of coalescence spray gun and distributor pipe, be arranged in the gas approach, the even injection of a small amount of high-temperature steam entered in the flue gas, steam consumption quantity is few, but can promote the ultrafine dust coalescence, and can not cause the large tracts of land ash that falls because producing oversized particles, this is beneficial to filtering device for filtering extremely fine dust and captures dust granules, effectively reduce ultra-fine grain and escape vapor (steam) temperature 200-500 ℃.When flue gas contains a large amount of ultrafine dust, enable this system.
The too high overflow of liquid level entered ash guiding pipe when 6, the overflow pipe in apparatus of the present invention was stopped transport for the anti-locking apparatus of the highest liquid level of control sink, adopted U-shaped pipeline, established a fluid-tight and can prevent the flue gas escape.
7, dried wet gas current demarcation strip upper vent hole and filtering device for filtering extremely fine dust and ash guiding pipe bore among the present invention, quantity are suitable, and are evenly distributed.The exhaust gas volumn that the spacing, aperture of arranging processed as required considers definite, and the perforated area ratio is generally 0.1-0.5, pore diameter range 8-400mm.
8, solution can adopt the various solution that have washing absorption or wash complexing SOx, the pollutants such as NOx, Hg among the present invention, such as NaOH, various By Amine Solutions, various complexing agents etc.Can be according to different pollutant removing efficient are comprehensively matched.
The treatment process of apparatus of the present invention is as follows:
With untreated flue dust, the SO of containing
2, the pollutant such as NOx, mercury flue gas (such as coal-fired flue-gas etc.) import multi-pollutant Combined Control Unit of the present invention by gas approach after, pipe unit through the core processing part, entered downwards in the microbubble dispersal device along wireway again by flue gas after tubulose filtering device for filtering extremely fine dust dust removal by filtration (comprising fine particle), the filtration first, through its microcellular structure liquid is pressed into sink, its microcellular structure of gas permeation produces microbubble and disperses to enter in the interior wash solution of sink, through the washing of wash solution, efficiently remove the pollutant (SO in the flue gas
2, NOx etc. stains thing), derive this purifier discharging by exhaust pass after the flue gas after the purification converges.
The fine solid particle of being held back by filtering device for filtering extremely fine dust (comprises PM
2.5) be retained in its inside, and carried by ash guiding pipe.The fine particulates of the device inwall that filters when micronic dust runs up to a certain degree, the puff prot of the purging system of then being installed by top sprays into compressed air and sweeps the edge, flying dust falls into the bottom ash bucket through ash guiding pipe, regularly open the bottom unloading valve, ash can be delivered to by the Pneumatic conveying pipeline of bottom and specify grey storehouse.In addition, the grieshoch that is trapped has absorption, catalytic oxidation function to the mercury in the flue gas, and the mercury in flue gas pollutant removing is had facilitation.
Application example one:
When 123 ℃ of the gas import cigarette temperature of simulating cigarette contain SO
2Concentration 2376, NOx concentration 821mg/m
3, flyash concentration 15.36g/m
3, mercury concentration 124ng/m
3, flyash carbon residue amount 0.25%.Filtering device for filtering extremely fine dust thickness of pipe wall 1mm, micropore size 0.5～2 μ m, micro bubble generation device thickness of pipe wall 1.5mm, micropore size 4～8 μ m.When adopting this purifier with the washing of organic amine mixed solution, SO under the various inlet pressure
2, NOx, the following Fig. 3 of dust removal efficiency, this device almost 100% removes dust.Denitration, desulfuration efficiency are all higher, and wherein desulfuration efficiency is more than 97%, and denitration efficiency can reach more than 83%, adsorption filtration removal of mercury efficient is more than 50%, increase with admission pressure, the pollutant removing efficient of this device obviously promotes, and the more excellent air inlet pressure of each pollutant control force is different.
Claims (10)
1. the multi-pollutant Combined Control Unit comprises gas approach, exhaust pass, sink, purging system and soot cleaning system, it is characterized in that: also comprise dried wet gas current demarcation strip and a plurality of pipe units,
Described gas approach and exhaust pass are parallel to be arranged, and both sides adjacent are also separated by dried wet gas current demarcation strip, have several passages on this dried wet gas current demarcation strip; The bottom of exhaust pass is connected with sink;
Some pipe units vertically are installed in the described sink, and each pipe unit upper end is connected with dried wet gas current demarcation strip, and the lower end links to each other with the sink bottom; Each pipe unit is double-tube structure, its inner sleeve is formed by connecting by tubulose filtering device for filtering extremely fine dust and ash guiding pipe upper-lower seal, suitable for reading and the dried wet gas current demarcation strip of filtering device for filtering extremely fine dust connect and with the corresponding adaptive installation of passage, the ash guiding pipe end opening passes the sink bottom surface and is connected with soot cleaning system; Its outer tube is formed by connecting by wireway and microporous bubble generating means, and wireway is suitable for reading to be connected on the dried wet gas current demarcation strip, and microporous bubble generating means bottom is connected in the bottom of sink.
2. described multi-pollutant Combined Control Unit according to claim 1, it is characterized in that: described tubulose filtering device for filtering extremely fine dust adopts the mouse cage structure of filter bag of tubulose.
3. described multi-pollutant Combined Control Unit according to claim 1, it is characterized in that: described tubulose filtering device for filtering extremely fine dust adopts the microporous membrane material of stainless steel, pottery or macromolecule material to make micropore size 0.1～1 μ m, film thickness 0.1～2mm.
4. described multi-pollutant Combined Control Unit according to claim 1, it is characterized in that: described microporous bubble generating means all is hollow tubular structure, barrel is provided with microcellular structure, adopts stainless steel, pottery or macromolecular material to make micropore size 0.01～10 μ m.
5. described multi-pollutant Combined Control Unit according to claim 1, it is characterized in that: described gas approach place also is provided with steam coalescence system, and this system is comprised of steam spraying gun and distributor pipe.
6. described multi-pollutant Combined Control Unit according to claim 1 is characterized in that: also be provided with overflow pipe on the cell wall of described sink top.
7. described multi-pollutant Combined Control Unit according to claim 1 is characterized in that: dried wet gas current demarcation strip upper vent hole and filtering device for filtering extremely fine dust and ash guiding pipe bore, quantity are suitable, and are evenly distributed.
8. described multi-pollutant Combined Control Unit according to claim 1, it is characterized in that: described purging system comprises air supply unit and transfer pipeline, each passage position of corresponding dried wet gas current demarcation strip is respectively equipped with a puff prot on this transfer pipeline.
9. described multi-pollutant Combined Control Unit according to claim 1, it is characterized in that: described soot cleaning system comprises air supply system, transfer pipeline, ash bucket and unloading valve, and described every ash guiding pipe is connected with ash bucket, and ash bucket is communicated with transfer pipeline through unloading valve.
10. described multi-pollutant Combined Control Unit according to claim 1, it is characterized in that: described kitchen sink also is furnished with the cleaning solution circulatory system.
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| CN201310310410.1A CN103357235B (en) | 2013-07-23 | 2013-07-23 | Multi-pollutant combined control device |
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|---|---|---|---|
| CN201310310410.1A CN103357235B (en) | 2013-07-23 | 2013-07-23 | Multi-pollutant combined control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104772033A (en) * | 2014-12-02 | 2015-07-15 | 成都华西堂投资有限公司 | Flue gas dry wet purification recovery processing system |
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