CN110170243A - Desulfation dust-extraction device - Google Patents
Desulfation dust-extraction device Download PDFInfo
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- CN110170243A CN110170243A CN201910510540.7A CN201910510540A CN110170243A CN 110170243 A CN110170243 A CN 110170243A CN 201910510540 A CN201910510540 A CN 201910510540A CN 110170243 A CN110170243 A CN 110170243A
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- China
- Prior art keywords
- level
- layer
- sink
- flue gas
- dedusting
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- 238000000605 extraction Methods 0.000 title claims abstract description 47
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 124
- 239000003546 flue gas Substances 0.000 claims abstract description 124
- 239000006260 foam Substances 0.000 claims abstract description 36
- 239000007921 spray Substances 0.000 claims abstract description 26
- 230000008676 import Effects 0.000 claims abstract description 19
- 238000010521 absorption reaction Methods 0.000 claims abstract description 16
- 238000004140 cleaning Methods 0.000 claims description 65
- 238000012856 packing Methods 0.000 claims description 61
- 238000005507 spraying Methods 0.000 claims description 48
- 238000011010 flushing procedure Methods 0.000 claims description 46
- 239000007788 liquid Substances 0.000 claims description 24
- 238000005406 washing Methods 0.000 claims description 13
- 239000013618 particulate matter Substances 0.000 abstract description 29
- 239000000428 dust Substances 0.000 abstract description 18
- 238000000926 separation method Methods 0.000 abstract description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 52
- 239000000443 aerosol Substances 0.000 description 33
- 229910021529 ammonia Inorganic materials 0.000 description 26
- 230000000694 effects Effects 0.000 description 23
- 239000003595 mist Substances 0.000 description 18
- 239000002245 particle Substances 0.000 description 14
- 238000006477 desulfuration reaction Methods 0.000 description 11
- 230000023556 desulfurization Effects 0.000 description 11
- 239000007789 gas Substances 0.000 description 10
- 230000009471 action Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 235000019504 cigarettes Nutrition 0.000 description 6
- 239000010419 fine particle Substances 0.000 description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 150000003863 ammonium salts Chemical class 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical group [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 description 2
- 230000004087 circulation Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001629 suppression Effects 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
-
- 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
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- 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
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (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)
- Treating Waste Gases (AREA)
Abstract
The present invention provides a kind of desulfation dust-extraction device, comprising: ontology is equipped with inlet and outlet；Spray structure is arranged in the absorption tower, and is arranged close to the import；Treatment facilities, it is arranged in the absorption tower, including level-one wash, second level wash, dedusting demisting component and foam removal component, flue gas successively flows out after the spray structure, the level-one wash, the second level wash, the dedusting demisting component, the foam removal component from the outlet from the import.After flue gas passes through level-one wash, second level wash, dedusting demisting component and foam removal component, the content of the particulate matter in flue gas can be reduced, the dust separation ability for improving desulfation dust-extraction device makes the concentration of the particulate matter in the flue gas of discharge not higher than 5mg/m3。
Description
Technical field
The present invention relates to the technical fields of gas cleaning, and in particular to a kind of desulfation dust-extraction device.
Background technique
Sulfur dioxide in boiler fired coal flue gas is one of main contributor of atmosphere pollution, and wet desulphurization is in processing flue gas
Sulfur dioxide conventional means, and the ammonia process of desulfurization in wet desulphurization is due to having the advantages that efficient and low power consuming and by people
Favored.
The ammonia process of desulfurization, which generally requires, uses absorption tower, purified treatment is carried out to flue gas by absorption tower, to reduce cigarette as far as possible
The concentration of the atmosphere pollution particulate matter such as aerosol, soluble-salt in gas.Spray structure, level-one are provided in existing absorption tower
Wash and level-one mist eliminating zone, flue gas enter absorption tower from the import on absorption tower, wash then in turn through spray structure, level-one
Component and level-one mist eliminating zone are washed, is finally flowed out from the outlet on absorption tower.Since the dust separation of flue gas is imitated on above-mentioned absorption tower
Fruit is poor, so that the concentration of the atmosphere pollution particulate matter such as aerosol, soluble-salt in treated flue gas is still higher, up to not
Into minimum discharge standard, the concentration of atmosphere pollution particulate matter must not be higher than 5mg/m3Regulation.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming absorption tower in the prior art to atmosphere pollution particulate matter
The poor defect of dust separation effect, to provide a kind of desulfation dust-extraction device.
In order to solve the above technical problem, the present invention provides a kind of desulfation dust-extraction devices, comprising:
Ontology is equipped with inlet and outlet；
Spray structure is arranged in the absorption tower, and is arranged close to the import；
Treatment facilities is arranged in the absorption tower, including level-one wash, second level wash, dedusting demisting group
Part and foam removal component, flue gas are successively washed by the spray structure, the level-one wash, the second level from the import
It is flowed out after washing component, the dedusting demisting component, the foam removal component from the outlet.
Optionally, the dedusting demisting component includes at least 3-stage dust-removal demisting layer.
Optionally, every grade of dedusting demisting layer is provided at least one dedusting demister, the dedusting demister packet
It includes shell and is arranged at intervals on the intracorporal multiple blades of the shell.
Optionally, the spacing between the blade at least in the dedusting demisting layer of three-level reduces step by step, and close
The spacing between the blade in adjacent two of the foam removal component dedusting demisting layer is less than far from the foam removal
The spacing between the blade in adjacent two of the component dedusting demisting layer.
Optionally, every grade of dedusting demisting layer is provided with the first flushing layer.
Optionally, the foam removal component includes multilevel defoaming layer.
Optionally, every grade of foam-removing layer is provided with demister and second rinses layer, and the second flushing layer is located at institute
State the lower section of demister.
Optionally, the level-one wash includes level-one catch tray, level-one packing layer and the level-one spray set gradually
Layer, the level-one catch tray between the spray structure and the level-one packing layer, the second level wash include according to
Second level catch tray, second level packing layer and the second level spraying layer of secondary setting, the second level catch tray be located at the level-one spraying layer and
Between the second level packing layer.
Optionally, further include level-one sink and second level sink, the level-one sink respectively with the level-one liquid collecting
Disk is connected to the level-one spraying layer, is connected with primary pump between the level-one sink and the level-one spraying layer；
The second level sink is connected to the second level catch tray and the second level spraying layer respectively, the second level sink
Two stage pump is connected between the second level spraying layer.
Optionally, the density of the cleaning solution in the level-one sink is greater than the close of the cleaning solution in the second level sink
Degree.
Optionally, the density of the cleaning solution in the level-one sink is not higher than 1.08g/cm3, in the second level sink
Cleaning solution density be not higher than 1.04g/cm3。
Optionally, the level-one sink is connected to the two stage pump.
Optionally, the second level sink is connected to the first flushing layer and the second flushing layer respectively, and the second level is washed
It washs and is connected with triplex between slot and the first flushing layer and the second flushing layer.
Technical solution of the present invention has the advantages that
1. desulfation dust-extraction device provided by the invention, including ontology, ontology is equipped with inlet and outlet, and spray structure setting exists
In ontology, and spray structure is arranged close to import, and flue gas first passes through spray structure after entering ontology from import, passes through spray structure
Desulfurization process is carried out to flue gas；Flue gas enters treatment facilities after carrying out desulfurization process, and the flue gas after desulfurization process is introduced into level-one
Wash carries out ammonia, soluble ammonium salt, aerosol and the particulate matter that flue gas is taken out of in level-one wash uninterrupted
Flushing, incorporate it in cleaning solution in level-one wash, and then prevent the generation of aerosol, to reduce in flue gas
Aerosol content；Meanwhile level-one wash can reduce the temperature of flue gas, the heat in strict control desulfation dust-extraction device
Balance, it is suppressed that the decomposition of ammonium sulfite ensure that the higher sulfurous ammonium salt of concentration constantly washing to low concentration in flue gas droplet
Wash diffusion in liquid.Flue gas enters back into second level wash after entering level-one wash, washs to flue gas further progress, into one
Step reduces the content of aerosol and soluble-salt in flue gas；
Flue gas enters dedusting demisting component after entering second level wash, and dedusting demisting component can make the fine grained in flue gas
Object cohesion and drop cohesion, promote fine particle coacervating large particle object or droplet in flue gas to be condensed into big drop,
So that large particle and big drop are separated with the gas in flue gas, the content of the drop and particulate matter in flue gas is thereby reduced；
Flue gas enters foam removal component after dedusting demisting component can generate inertial impaction, directly interception and diffusive interception,
So that the mist in flue gas is formed biggish drop, is separated after drop cohesion with the gas in flue gas, and then remove the mist in flue gas
Foam makes to be substantially free of mist in flue gas, due to containing a certain amount of soluble-salt in the drop of cohesion, to further decrease cigarette
The content of fine droplets, fine particulates and soluble-salt in gas.
In conclusion flue gas passes through level-one wash, second level wash, dedusting demisting component and foam removal component
Afterwards, the content that can reduce the particulate matter in flue gas improves the dust separation ability of desulfation dust-extraction device, in the flue gas for making discharge
The concentration of particulate matter is not higher than 5mg/m3。
2. desulfation dust-extraction device provided by the invention, dedusting demisting component includes at least 3-stage dust-removal demisting layer, in this way may be used
So that flue gas is carried out multistage dedusting demisting, further decrease the content of the particulate matter in flue gas, improves desulfation dust-extraction device to flue gas
Dedusting demisting ability.
3. desulfation dust-extraction device provided by the invention, every grade of dedusting demisting layer is provided at least one dedusting demister,
Demisting is dusted to flue gas by dedusting demister.Dedusting demister includes shell and to be arranged at intervals on shell intracorporal multiple
Blade, flue gas can generate vortex street effect, after flue gas reaches certain flow rate, a part of cigarette under the centrifugal force and exhumation of blade
Liquid kinetic energy in gas is converted into liquid vibration, so that the separation of the drop in flue gas, while being acted on by vortex street, strengthen cigarette
The degree of disturbing of airflow field improves the reunion of particulate matter and drop, promotes fine particle or drop to grow up, to improve dedusting demisting
The trapping ability of device.
4. desulfation dust-extraction device provided by the invention, flow velocity when flue gas flows to foam removal component from level-one wash is gradually
Increase, the flow velocity close to the dedusting demisting layer of second level wash is lower, by the dedusting demister for increasing the dedusting demisting layer
Spacing between interior two neighboring blade, can reach the effect of removal large particle, and flue gas is made to flow through the dedusting demister
When resistance reduce；Flow velocity close to the dedusting demisting layer of foam removal component is higher, and the dedusting by reducing the dedusting demisting layer removes
The spacing between two neighboring blade in day with fog can reach the effect of removal small particle and drop, so that flue gas is flowed through this and remove
Resistance when dirt demister increases；To by the way that the spacing between the blade of the dedusting demisting layer of at least three-level is arranged to step by step
Reduce, so that flow field when flue gas flows through at least 3-stage dust-removal demisting layer in blade is more evenly reasonable, and then improves dedusting and remove
The dedusting demisting ability of mist component, further decreases the concentration of the solid particulate matters such as water soluble salt and aerosol in flue gas.
5. desulfation dust-extraction device provided by the invention, every grade of dedusting demisting layer is provided with the first flushing layer, and flue gas is removing
It is condensed into particulate matter under the action of dirt demister or drop remains on dedusting demister, the effect for rinsing layer by first can incite somebody to action
Particulate matter or drop on dedusting demister wash away, and so that dedusting demister is kept cleaning, are not easy to plug, keep its good dedusting
Defogging effect.
6. desulfation dust-extraction device provided by the invention, foam removal component includes multilevel defoaming layer, and flue gas passes through multilevel defoaming layer
Afterwards, the droplet amount of flue gas carrying can be further decreased, to reduce the particulate matter from the flue gas being discharged in desulfation dust-extraction device
Content, it is ensured that particle content in flue gas is less than 5mg/m3.
7. desulfation dust-extraction device provided by the invention, every grade of foam-removing layer is provided with demister and second rinses layer, second
The lower section that layer is located at demister is rinsed, the flushing action for rinsing layer by second rushes residual liquid on demister and particulate matter
It walks, to guarantee the clean and tidy of demister, does not result in blockage to demister, keep its good foam removal effect.
8. desulfation dust-extraction device provided by the invention, level-one wash includes the level-one catch tray set gradually, level-one
Packing layer and level-one spraying layer, for level-one catch tray between spray structure and level-one packing layer, level-one packing layer can be to flue gas
In ammonia and aerosol etc. captured so that ammonia and aerosol are separated with flue gas；Level-one spraying layer can be to level-one packing layer
Be rinsed with by level-one packing layer ammonia and aerosol etc. rinse to level-one catch tray, with ensure level-one packing layer to ammonia and
The capturing ability of aerosol etc.；The flushing liquor containing ammonia and aerosol etc. can be returned by the collecting action of level-one catch tray
It receives.
Second level wash includes the second level catch tray, second level packing layer and second level spraying layer set gradually, second level liquid collecting
For disk between level-one spraying layer and second level packing layer, second level packing layer can be to the ammonia and the further progresss such as aerosol in flue gas
It captures, so that ammonia and aerosol are separated with flue gas；Second level spraying layer can be rinsed second level packing layer with by second level packing layer
In ammonia and aerosol etc. rinsing to second level catch tray, to ensure second level packing layer to the capturing ability of ammonia and aerosol etc.；
The flushing liquor containing ammonia and aerosol etc. can be recycled by the collecting action of second level catch tray.
Further include level-one sink and second level sink 9. desulfation dust-extraction device provided by the invention, level-one sink with
The connection of level-one spraying layer, and is connected with primary pump between level-one sink and level-one spraying layer, and primary pump is by level-one sink
Interior cleaning solution is delivered to level-one spraying layer, to be rinsed to level-one packing layer；Level-one sink is connected to level-one catch tray,
It is recycled in level-one sink and is recycled with the flushing liquor for collecting level-one catch tray, while saving cleaning solution consumption, dimension
The cleaning solution balance of desulfation dust-extraction device is protected.
Second level sink is connected to second level spraying layer, and is connected with two stage pump between second level sink and second level spraying layer,
Cleaning solution in second level sink is delivered to second level spraying layer by two stage pump, to be rinsed to second level packing layer；Second level washing
Slot is connected to second level catch tray, and the flushing liquor that second level catch tray is collected is recycled in second level sink and is recycled, and is saved
While cleaning solution consumes, the cleaning solution balance of desulfation dust-extraction device is maintained.
10. desulfation dust-extraction device provided by the invention, the density of the cleaning solution in level-one sink is greater than second level sink
The density of interior cleaning solution, so that forming concentration ladder between cleaning solution on the cleaning solution on level-one spraying layer and second level spraying layer
Degree, progressive with the washing to flue gas, the soluble-salt isoconcentration of the droplet in flue gas the next low, and the density of cleaning solution is also got over
Come lower, under the conditions of guaranteeing the dynamic equilibrium of concentration gradient difference of the droplet in cleaning solution and flue gas, maintains higher and permanent
Fixed diffusion rate reduces the content of soluble-salt and particulate matter in flue gas etc. to improve the washing effect of flue gas.
11. desulfation dust-extraction device provided by the invention, the density of the cleaning solution in level-one sink is not higher than 1.08g/
The density of cm3, the cleaning solution in second level sink are not higher than 1.04g/cm3, it can be ensured that the cleaning solution in level-one sink is to one
Grade packing layer is effectively rinsed, and the cleaning solution in second level sink effectively rinses second level packing layer, will not be because washing
The density for washing liquid is excessively high and remains on level-one packing layer and second level packing layer, ensure that the concentration of soluble-salt in flue gas droplet
With the gradient difference of the concentration of cleaning solution, it is ensured that the capturing ability of level-one packing layer and second level packing layer.
12. desulfation dust-extraction device provided by the invention, level-one sink is connected to two stage pump, can be incited somebody to action in this way by two stage pump
Cleaning solution in second level sink is delivered in level-one sink.
13. desulfation dust-extraction device provided by the invention, second level sink rinses layer and second with first respectively and rinses layer company
It is logical, it is connected with triplex between second level sink and the first flushing layer and the second flushing layer, second level can be washed by triplex
Cleaning solution in slot is delivered to the first flushing layer and second rinses layer, and first rinses the flushable dedusting demister of layer, prevents dedusting
Demister forms particle packing, it is ensured that the dedusting defogging effect of dedusting demister；Second rinses the flushable demister of layer, prevents from removing
Foam device forms particle packing, it is ensured that the foam removal effect of demister, first, which rinses the flushing liquor of layer and second, rinses the flushing liquor of layer
It finally falls on second level catch tray, the flushing liquor on second level catch tray can be recycled to second level sink and recycle.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram of the desulfation dust-extraction device provided in a specific embodiment of the invention；
Fig. 2 is the schematic diagram of the dedusting demister provided in a specific embodiment of the invention；
Fig. 3 is the schematic diagram of the level-one spraying layer provided in a specific embodiment of the invention.
Description of symbols:
1, ontology；101, import；102, it exports；2, spray structure；3, level-one wash；31, level-one catch tray；32,
Level-one packing layer；33, level-one spraying layer；4, second level wash；41, second level catch tray；42, second level packing layer；43, second level is sprayed
Drenching layer；5, dedusting demisting component；51, dedusting demister；511, shell；512, blade；6, foam removal component；7, level-one sink；
8, second level sink；9, primary pump；10, two stage pump；11, triplex；12, main pipe；13, branch pipe；14, supporting beam；15, nozzle
Pipe.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
A kind of specific embodiment of desulfation dust-extraction device as shown in Figure 1 to Figure 3, comprising:
Ontology 1 is equipped with import 101 and outlet 102；Spray structure 2 is arranged in absorption tower, and sets close to import 101
It sets.Flue gas first passes through spray structure 2 after entering ontology 1 from import 101, carries out desulfurization process to flue gas by spray structure 2.
For spray structure 2 specific implementation with no restriction, can in the prior art be applied to desulfurization and dedusting
Various spray structures 2 in device.
Treatment facilities is arranged in absorption tower, including level-one wash 3, second level wash 4, dedusting demisting component 5
And foam removal component 6, flue gas successively pass through spray structure 2, level-one wash 3, second level wash 4, dedusting from import 101
It is flowed out after demisting component 5, foam removal component 6 from outlet 102.
Flue gas enters treatment facilities after carrying out desulfurization process, and the flue gas after desulfurization process is introduced into level-one wash 3,
Continual flushing is carried out to ammonia, soluble ammonium salt, aerosol and the particulate matter that flue gas is taken out of in level-one wash 3, is made
It is incorporated in the cleaning solution in level-one wash 3, and then prevents the generation of aerosol, to reduce the aerosol in flue gas
Content；Meanwhile level-one wash can reduce the temperature of flue gas, the thermal balance in strict control desulfation dust-extraction device, suppression
The decomposition for having made ammonium sulfite ensure that the higher sulfurous ammonium salt of concentration constantly expands into the cleaning solution of low concentration in flue gas droplet
It dissipates.；Flue gas enters back into second level wash 4 after entering level-one wash 3, washs to flue gas further progress, further drops
The content of aerosol and soluble-salt in low flue gas；Flue gas enters dedusting demisting component 5 after entering second level wash 4, removes
Dirt demisting component 5 can make the cohesion of the fine particle in flue gas and drop cohesion, and the fine particle in flue gas is promoted to be condensed into greatly
Particulate matter or droplet are condensed into big drop, so that large particle and big drop are separated with the gas in flue gas, and then reduce
The content of drop and particulate matter in flue gas；Flue gas enters foam removal component 6 after dedusting demisting component 5, can generate inertia
Hit, directly intercept and diffusive interception, the mist in flue gas is made to form biggish drop, drop agglomerate after with the gas in flue gas
Separation, so remove flue gas in mist, make to be substantially free of mist in flue gas, due in the drop of cohesion containing it is a certain amount of can
Soluble, to further decrease the content of the fine droplets in flue gas, fine particulates and soluble-salt.
In conclusion flue gas passes through level-one wash 3, second level wash 4, dedusting demisting component 5 and foam removal group
After part 6, the content of the particulate matter in flue gas can be reduced, improves the dust separation ability of desulfation dust-extraction device, makes the flue gas of discharge
In particulate matter concentration be not higher than 5mg/m3.Specifically, as shown in Figure 1, dedusting demisting component 5 includes that at least 3-stage dust-removal removes
Mist layer.Flue gas can be made to carry out multistage dedusting demisting in this way, further decrease the content of the particulate matter in flue gas, improve desulfurization and dedusting
Dedusting demisting ability of the device to flue gas.
It is understood that the dedusting demisting layer that dedusting demisting component 5 includes can be three layers, four layers or more.?
In embodiment, dedusting demisting component 5 includes 3-stage dust-removal demisting layer, i.e. dedusting demisting layer has three layers.
As shown in Figures 1 and 2, every grade of dedusting demisting layer is provided at least one dedusting demister 51.Every grade of dedusting removes
The dedusting demister 51 being arranged in mist layer can be set according to actual needs, and can be one, two or more, and multiple blades
512 are directly fixed on shell 511 or are arranged in shell 511, can be according to horizontal type, chevron shaped, V between blade 512
The arrangement of the forms such as font, combined.Wherein, dedusting demister 51 can also be various known dedusting demisters in the prior art
51。
Dedusting demister 51 includes shell 511 and the multiple blades 512 being arranged at intervals in shell 511.Flue gas can be
Vortex street effect, the liquid after flue gas reaches certain flow rate, in part of smoke are generated under the centrifugal force and exhumation of blade 512
Kinetic energy is converted into liquid vibration, so that the separation of the drop in flue gas, while being acted on by vortex street, strengthen disturbing for flue gas flow field
Degree improves the reunion of particulate matter and drop, promotes fine particle or drop to grow up, to improve the trapping energy of dedusting demister
Power.
The spacing between blade 512 at least in the dedusting demisting layer of three-level reduces step by step, and close to the phase of foam removal component 6
The spacing between blade 512 in two adjacent dedusting demisting layers is less than the adjacent two dedusting demisting far from foam removal component 6
The spacing between blade 512 in layer.
Flow velocity when flue gas flows to foam removal component 6 from level-one wash 3 is gradually increased, close to second level wash 4
The flow velocity of dedusting demisting layer is lower, the two neighboring blade 512 in dedusting demister 51 by increasing the dedusting demisting layer it
Between spacing, can reach the effect of removal large particle, and resistance when flue gas being made to flow through the dedusting demister 51 reduces；It is close
The flow velocity of the dedusting demisting layer of foam removal component 6 is higher, adjacent two in dedusting demister 51 by reducing the dedusting demisting layer
Spacing between a blade 512 can reach the effect of removal small particle and drop, when flue gas being made to flow through the dedusting demister 51
Resistance increase；To make by the way that the spacing between the blade 512 of the dedusting demisting layer of at least three-level to be arranged to reduce step by step
The flow field obtained when flue gas flows through at least 3-stage dust-removal demisting layer in blade 512 is more evenly reasonable, and then improves dedusting demisting group
The dedusting demisting ability of part 5, further decreases the concentration of the solid particulate matters such as water soluble salt and aerosol in flue gas.
For example, dedusting demisting component 5 includes one set gradually when dedusting demisting component 5 includes 3-stage dust-removal demisting layer
Grade dedusting demisting layer, two-stage dust removal demisting layer and 3-stage dust-removal demisting layer, primary dust removing demisting layer are located at 4 He of second level wash
Between two-stage dust removal demisting layer, 3-stage dust-removal demisting layer is between two-stage dust removal demisting layer and foam removal component 6.
Primary dust removing demisting layer, two-stage dust removal demisting layer and 3-stage dust-removal demisting layer are provided at least one dedusting demisting
Device 51, the spacing in the dedusting demister 51 of two-stage dust removal demisting layer between two neighboring blade 512 are less than primary dust removing demisting
Spacing in the dedusting demister 51 of layer between two neighboring blade 512, and it is greater than 3-stage dust-removal demisting layer dedusting demister 51
Spacing between interior two neighboring blade 512.
Flue gas is gradually increased in the flow velocity of primary dust removing demisting layer, two-stage dust removal demisting layer and 3-stage dust-removal demisting layer, cigarette
Gas is lower in the flow velocity of primary dust removing demisting layer, two neighboring leaf in the dedusting demister 51 by increasing primary dust removing demisting layer
Spacing between piece 512, so that resistance of the flue gas when flowing through the dedusting demister 51 reduces, flue gas is in 3-stage dust-removal demisting layer
Flow velocity it is higher, the spacing in the dedusting demister 51 by reducing 3-stage dust-removal demisting layer between two neighboring blade 512 makes
It obtains resistance of the flue gas when flowing through the dedusting demister 51 to increase, so that flue gas is flowing through primary dust removing demisting layer, second level
Flow field when dedusting demisting layer and 3-stage dust-removal demisting layer in blade 512 is more evenly reasonable.
As shown in Figure 1, every grade of dedusting demisting layer is provided with the first flushing layer.Flue gas is under the action of dedusting demister 51
It is condensed into particulate matter or drop remains on dedusting demister 51, rinsing layer by first can be by the particle on dedusting demister 51
Object or drop wash away, and so that dedusting demister 51 is kept cleaning, are not easy to plug, keep its good dedusting defogging effect.
First flushing layer can be set in the lower section of dedusting demister 51, also can be set in the upper of dedusting demister 51
The first flushing layer is respectively provided with above and below side or dedusting demister 51.
As shown in Figure 1, foam removal component 6 includes multilevel defoaming layer.Flue gas can further decrease cigarette after multilevel defoaming layer
The droplet amount that gas carries, to reduce the content of the particulate matter from the flue gas being discharged in desulfation dust-extraction device, it is ensured that in flue gas
Particle content be less than 5mg/m3.
For foam-removing layer series with no restriction, foam-removing layer can be two layers, three layers, four layers etc., can be according to practical need
It is configured.In the present embodiment, two layers of foam-removing layer.
Every grade of foam-removing layer is provided with demister and second rinses layer, and the second flushing layer is located at the lower section of demister.For
The quantity of demister can be one, two or more with no restriction.Second rinse layer position can according to actual needs into
Row adjustment appropriate enables the second flushing layer effectively rinse to demister.
For demister type with no restriction.For example, demister can be wire mesh demister, flue gas is carried out
The working principle of foam removal are as follows: when the flue gas with mist rises through demister with certain speed, rise due to mist
Effect of inertia, mist and demister collide and are attached on the surface of demister.The diffusion of mist on demister surface
And the gravitational settling of mist, so that mist is formed the interface point that biggish drop flow to two silks along filament；Filament moistens
The capillarity of moist, drop surface tension and filament, so that drop is increasing, until the drop of aggregation arrives greatly it certainly
Body generate gravity be more than flue gas climbing power and Surface Tension of Liquid Drops resultant force when, drop just from filament separation whereabouts, into
And have the function that carry out foam removal to flue gas.Wire mesh demister reaches 98%- to partial size >=3~5um mist, arresting efficiency
99.5%.
As shown in Figure 1, level-one wash 3 includes level-one catch tray 31, level-one packing layer 32 and the level-one set gradually
Spraying layer 33, level-one catch tray 31 is between spray structure 2 and level-one packing layer 32.Level-one packing layer 32 can be in flue gas
Ammonia and aerosol etc. are captured, so that ammonia and aerosol are separated with flue gas；Level-one spraying layer 33 can be to level-one packing layer 32
Be rinsed with by level-one packing layer 32 ammonia and aerosol etc. rinse to level-one catch tray 31, to ensure level-one packing layer 32
To the capturing ability of ammonia and aerosol etc.；It can be by the flushing containing ammonia and aerosol etc. by the collecting action of level-one catch tray 31
Liquid is recycled.
As shown in Figure 1, second level wash 4 includes second level catch tray 41, second level packing layer 42 and the second level set gradually
Spraying layer 43, second level catch tray 41 is between level-one spraying layer 33 and second level packing layer 42.Second level packing layer 42 can be to flue gas
In ammonia and the further progresss such as aerosol capture so that ammonia and aerosol are separated with flue gas；Second level spraying layer 43 can be to second level
Packing layer 42 be rinsed with by second level packing layer 42 ammonia and aerosol etc. rinsing to second level catch tray 41, to ensure two
Capturing ability of the grade packing layer 42 to ammonia and aerosol etc.；It is gentle molten can will to contain ammonia by the collecting action of second level catch tray 41
The flushing liquor of glue etc. is recycled.
For level-one spraying layer 33 and second level spraying layer 43 specific implementation structure with no restriction.For example, as shown in figure 3,
Level-one spraying layer 33 and second level spraying layer 43 are including main pipe 12 and more branch pipes 13 being arranged in main pipe 12, more branch pipes
More supporting beams 14 are provided on 13, supporting beam 14 is fixed on the inside of ontology 1, support branch pipe 13 by supporting beam 14, one
Aspect can be such that the position of branch pipe 13 fixes, and on the other hand branch pipe 13 can be prevented to be detached from from main pipe 12, influence spraying effect.
The outlet of branch pipe is connected with blast tube 15, and for connecting nozzle, nozzle is arranged towards level-one packing layer 32 or second level packing layer 42.
Nozzle can be spiral nozzle or other nozzles, and flushing liquor can be sprayed to level-one packing layer 32 or second level packing layer 42
?.In the present embodiment, nozzle is spiral nozzle, and spiral nozzle can produce good atomizing effect, improves spraying effect, and
During being sprayed liquid, spiral nozzle is not easy to plug, and has good spraying effect.
It is provided with filler on level-one packing layer 32 or second level packing layer 42, it, can be with for the selection not restriction of filler
Capture the particulate matters such as ammonia and aerosol.In the present embodiment, filler uses structured packing, can reinforce catching ammonia and aerosol
It catches.
As shown in Figure 1, desulfation dust-extraction device further includes level-one sink 7 and second level sink 8, level-one sink 7 is distinguished
It is connected to level-one catch tray 31 and level-one spraying layer 33, primary pump 9 is connected between level-one sink 7 and level-one spraying layer 33.
Cleaning solution in level-one sink 7 is delivered to level-one spraying layer 33 by primary pump 9, to be rinsed to level-one packing layer 32；One
Grade sink 7 is connected to level-one catch tray 31, and the flushing liquor that level-one catch tray 31 is collected is recycled in level-one sink 7 and is followed
Ring uses, and while saving cleaning solution consumption, maintains the cleaning solution balance of desulfation dust-extraction device.
Second level sink 8 is connected to second level catch tray 41 and second level spraying layer 43 respectively, and second level sink 8 and second level spray
Two stage pump 10 is connected between layer 43.Cleaning solution in second level sink 8 is delivered to second level spraying layer 43 by two stage pump 10, with right
Second level packing layer 42 is rinsed；Second level sink 8 is connected to second level catch tray 41, the flushing that second level catch tray 41 is collected
Liquid is recycled in second level sink 8 and is recycled, and while saving cleaning solution consumption, maintains the cleaning solution of desulfation dust-extraction device
Balance.
The density of cleaning solution in level-one sink 7 is greater than the density of the cleaning solution in second level sink 8, so that one
Concentration gradient is formed between the cleaning solution on cleaning solution and second level spraying layer 43 on grade spraying layer 33, with the washing to flue gas
It is progressive, the soluble-salt isoconcentration of the droplet in flue gas the next low, and the density of cleaning solution is also lower and lower, guarantee cleaning solution
Under the conditions of dynamic equilibrium with the concentration gradient difference of the droplet in flue gas, higher and constant diffusion rate is maintained, to mention
The high washing effect of flue gas, reduces the content of soluble-salt and particulate matter in flue gas etc..
The density of cleaning solution in level-one sink 7 is not higher than 1.08g/cm3, the cleaning solution in second level sink 8 it is close
Degree is not higher than 1.04g/cm3, it can be ensured that the cleaning solution in level-one sink 7 effectively rinses level-one packing layer 32, and two
Cleaning solution in grade sink 8 effectively rinses second level packing layer 42, will not remain in because the density of cleaning solution is excessively high
On level-one packing layer 32 and second level packing layer 42, the ladder of the concentration of the concentration and cleaning solution of soluble-salt in flue gas droplet ensure that
It is poor to spend, it is ensured that the capturing ability of level-one packing layer 32 and second level packing layer 42.
As shown in Figure 1, level-one sink 7 is connected to two stage pump 10.It in this way can will be in second level sink 8 by two stage pump 10
Cleaning solution be delivered in level-one sink 7.
It is equipped with densitometer on level-one flushed channel and second level sink 8, to detect the close of the cleaning solution in level-one sink 7
The density of degree and the cleaning solution in second level sink 8, makes the density of level-one sink 7 and the cleaning solution in second level sink 8
Always in acceptability limit.It with no restriction for densitometer, can be the various density detect with the density of liquid
Meter.For example, density is calculated as gradiomanometer, and level gauging function is realized simultaneously.
Second level sink 8 is equipped with the import of clean cleaning solution, when densitometer detects the washing in second level sink 8
When the density of liquid is excessively high or liquid level is insufficient, fresh cleaning solution can be by providing by import into.Level-one flushed channel 7 is equipped with and washes
The import of liquid is washed, the import of level-one flushed channel 7 is connected to two stage pump 10, and such cleaning solution can only be from the lower second level washing of density
Slot 8 is delivered to level-one flushed channel 7, when densitometer detects that the density of the cleaning solution in level-one sink 7 is excessively high or liquid level is insufficient
When, the cleaning solution in second level sink 8 can be delivered to level-one sink 7.On the other hand, the cleaning solution in one-stage water wash slot 7
It can also be needed according to operation by being drained into the oxidation trough outside ontology 1 outside primary pump 9, and the slurries in oxidation trough can also root
The thickened pulp liquid pool in ontology 1 is needed to supplement according to operation, partially liq is finally taken out of by smoke evaporative.Above-mentioned design realization is washed
The utilization step by step for washing liquid system maintains the density of each system cleaning solution, slurries, it is ensured that the liquid of a whole set of desulfurization dust-removal system
Body balance.For cleaning solution type with no restriction, to particulate matter have flushing effect, chlorine ion concentration be no more than 500mg/L
And new particulate matter will not be brought into.For example, cleaning solution can be water.
As shown in Figure 1, second level sink 8 is connected to the first flushing layer and the second flushing layer respectively, second level sink 8 and the
Triplex 11 is connected between one flushing layer and the second flushing layer.It can be by the cleaning solution in second level sink 8 by triplex 11
It is delivered to the first flushing layer and second and rinses layer, first rinses the flushable dedusting demister 51 of layer, prevents 51 shape of dedusting demister
At particle packing, it is ensured that the dedusting defogging effect of dedusting demister 51；Second rinses the flushable demister of layer, prevents demister shape
At particle packing, it is ensured that the flushing liquor of the foam removal effect of demister, the flushing liquor of the first flushing layer and the second flushing layer finally falls
It falls on second level catch tray 41, the flushing liquor on second level catch tray 41 can be recycled to second level sink 8 and recycle.
Level-one sink 7, second level sink 8, level-one catch tray 31, level-one spraying layer 33, second level catch tray 41, second level spray
The circulation style for the cleaning solution that drenching layer 43, first is rinsed between layer and the second flushing layer can also be led to by pipeline flow
Other structures circulations are crossed, circulating liquid and there can be good leakproofness.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (13)
1. a kind of desulfation dust-extraction device characterized by comprising
Ontology (1) is equipped with import (101) and outlet (102)；
Spray structure (2) is arranged in the absorption tower, and is arranged close to the import (101)；
Treatment facilities is arranged in the absorption tower, including level-one wash (3), second level wash (4), dedusting demisting
Component (5) and foam removal component (6), flue gas are successively washed by the spray structure (2), the level-one from the import (101)
It washs after component (3), the second level wash (4), the dedusting demisting component (5), the foam removal component (6) from the outlet
(102) it flows out.
2. desulfation dust-extraction device according to claim 1, which is characterized in that the dedusting demisting component (5) includes at least
3-stage dust-removal demisting layer.
3. desulfation dust-extraction device according to claim 2, which is characterized in that every grade of dedusting demisting layer be provided with to
A few dedusting demister (51), the dedusting demister (51) include shell (511) and are arranged at intervals on the shell
(511) multiple blades (512) in.
4. desulfation dust-extraction device according to claim 3, which is characterized in that at least in the dedusting demisting layer of three-level
Spacing between the blade (512) reduces step by step, and close to the adjacent two dedusting demisting of the foam removal component (6)
The spacing between the blade (512) in layer is less than the adjacent two dedusting demisting far from the foam removal component (6)
The spacing between the blade (512) in layer.
5. desulfation dust-extraction device according to claim 1-4, which is characterized in that every grade of dedusting demisting layer is equal
It is provided with the first flushing layer.
6. the desulfation dust-extraction device stated according to claim 5, which is characterized in that the foam removal component (6) includes multilevel defoaming layer.
7. desulfation dust-extraction device according to claim 6, which is characterized in that every grade of foam-removing layer is provided with demister
Layer is rinsed with second, the second flushing layer is located at the lower section of the demister.
8. desulfation dust-extraction device according to claim 7, which is characterized in that the level-one wash (3) includes successively
Level-one catch tray (31), level-one packing layer (32) and the level-one spraying layer (33) of setting, the level-one catch tray (31) are located at institute
It states between spray structure (2) and the level-one packing layer (32), the second level wash (4) includes the second level collection set gradually
Liquid disk (41), second level packing layer (42) and second level spraying layer (43), the second level catch tray (41) are located at the level-one spraying layer
(33) between the second level packing layer (42).
9. desulfation dust-extraction device according to claim 8, which is characterized in that further include that level-one sink (7) and second level are washed
It washs slot (8), the level-one sink (7) is connected to the level-one catch tray (31) and the level-one spraying layer (33) respectively, institute
It states and is connected with primary pump (9) between level-one sink (7) and the level-one spraying layer (33)；
The second level sink (8) is connected to the second level catch tray (41) and the second level spraying layer (43) respectively, and described two
Two stage pump (10) are connected between grade sink (8) and the second level spraying layer (43).
10. desulfation dust-extraction device according to claim 9, which is characterized in that the cleaning solution in the level-one sink (7)
Density be greater than the second level sink (8) in cleaning solution density.
11. desulfation dust-extraction device according to claim 10, which is characterized in that the washing in the level-one sink (7)
The density of liquid is not higher than 1.08g/cm3, and the density of the cleaning solution in the second level sink (8) is not higher than 1.04g/cm3.
12. according to the described in any item desulfation dust-extraction devices of claim 9-11, which is characterized in that the level-one sink (7)
It is connected to the two stage pump (10).
13. according to the described in any item desulfation dust-extraction devices of claim 9-12, which is characterized in that the second level sink (8)
It is connected to respectively with the first flushing layer and the second flushing layer, the second level sink (8) is rinsed layer and second with first and rinsed
Triplex (11) are connected between layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510540.7A CN110170243A (en) | 2019-06-13 | 2019-06-13 | Desulfation dust-extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510540.7A CN110170243A (en) | 2019-06-13 | 2019-06-13 | Desulfation dust-extraction device |
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| CN110170243A true CN110170243A (en) | 2019-08-27 |
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ID=67697325
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910510540.7A Pending CN110170243A (en) | 2019-06-13 | 2019-06-13 | Desulfation dust-extraction device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113117471A (en) * | 2021-05-13 | 2021-07-16 | 云南文山铝业有限公司 | System and method for temporarily isolating ammonia desulfurization washing tank for maintenance |
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| CN210385440U (en) * | 2019-06-13 | 2020-04-24 | 中国华电科工集团有限公司 | Desulfurizing and dust-removing device |
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| CN206621986U (en) * | 2017-04-07 | 2017-11-10 | 中石化南京工程有限公司 | A kind of desulfurization absorption plant |
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