CN209205022U - A kind of purification system of cooperation-removal multi-pollutant - Google Patents
A kind of purification system of cooperation-removal multi-pollutant Download PDFInfo
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- CN209205022U CN209205022U CN201821897782.3U CN201821897782U CN209205022U CN 209205022 U CN209205022 U CN 209205022U CN 201821897782 U CN201821897782 U CN 201821897782U CN 209205022 U CN209205022 U CN 209205022U
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Abstract
The utility model discloses a kind of purification systems of cooperation-removal multi-pollutant, the purification system includes the host shell with gas inlet and exhanst gas outlet, desulfurizing agent injection apparatus and denitration reaction object injection apparatus, and desulfurizing agent injection apparatus is used for the gas inlet of connection host shell and the channel interior injection desulfurization particle of boiler flue gas outlet to be used for Dry desulfurization；Along flow of flue gas direction, electric field region, SCR denitration catalytic domain, filter bag area and heat transfer zone have been sequentially arranged inside host shell；The heat of high-temperature flue gas can be transmitted into the air before boiler by heat-exchanger rig in this way, by air preheat to certain temperature, boiler heat exchange performance is improved, reduces thermal losses, the air preheater in previous system can be substituted, solves the problems, such as that place is limited in some transformation projects.Also, smoke heat replacing device is in dustless operating condition, no hydrogen sulfate ammonia, it is not easy to block, heat exchange efficiency is high.
Description
Technical field
The utility model relates to flue gases purification field, in particular to a kind of purification system of cooperation-removal multi-pollutant
System.
Background technique
Gaseous state or solid contaminant, air contaminant treatment, multiple pollutant must assist containing there are many in coal-fired plant flue gas
With control, have an effect simultaneously, the effect that can be only achieved.Currently, the terminal tandem control method that coal fired power plant pollutant uses
Irrationality increasingly embodies, and the compound pollution problem of atmosphere usually occurs, and therefore, cigarette can be controlled in the world simultaneously by studying
Dirt, SOX、NOX, the Multiple Pollutant Control Technologys such as Hg.
Currently, electric-bag complex dust collector only has two kinds of functions of dedusting and demercuration；Its working environment is discomfort after air preheater
Answer Yu Gaowen (300 DEG C~400 DEG C) operating condition；Air preheater, electric-bag complex dust collector and between connecting line take up space compared with
Greatly, electric-bag complex dust collector in the prior art is difficult to be applied to the limited environment of installation space.
In addition, its filter bag of existing electric-bag complex dust collector is arranged as being vertically arranged, due to pulse jet etc., filter bag is long
Degree is unsuitable too long, leads to a piece of vacuum area in filter bag lower part, space utilization rate is lower；Since filter bag is vertically arranged, air-flow stream
To being side into ejection, air-flow needs 90 ° of turns, and air flow method is more uneven, and front filter bag is washed away more by air-flow front
Seriously, life-span of the filter bag is reduced；Dust remover resistance is also larger；The equipment does not have active carbon screening and regenerating unit, active carbon to compare
Waste.
Therefore, hot environment can be applied to by how providing one kind, and volume is more compact cooperation-removal multi-pollutant
Purification system, be those skilled in that art's technical problem urgently to be resolved.
Utility model content
The utility model provides a kind of purification system of cooperation-removal multi-pollutant, including goes out with gas inlet and flue gas
The host shell of mouth, the gas inlet of the host shell are directly connected to boiler flue gas outlet, and the purification system further includes taking off
Sulphur agent injection apparatus and denitration reaction object injection apparatus, the desulfurizing agent injection apparatus are used for the cigarette for being connected to the host shell
The channel interior injection desulfurization particle of gas import and boiler flue gas outlet is to be used for Dry desulfurization；It is described along flow of flue gas direction
It has been sequentially arranged inside host shell with lower component:
Electric field region is equipped with charging component, charged for carrying out to the solid particle in flue gas；
SCR denitration catalytic domain, is equipped with denitrating catalyst, and the denitration reaction of dress injection is sprayed with the denitration reaction object
Object collaboration removes nitre；
Filter bag area, is disposed with filter bag；
Heat transfer zone is equipped with heat-exchanger rig, for absorbing the heat in flue gas for heating to boiler inlet air.
The heat of high-temperature flue gas can be transmitted into the air before boiler by heat-exchanger rig in this way, and air preheat is arrived
Certain temperature improves boiler heat exchange performance, reduces thermal losses.I.e. extraneous fresh air absorption flows through in purification system
After heat-exchanger rig flue gas heat is warmed, the import of boiler is flowed into.The air preheater in previous system can be substituted in this way, solved
The limited problem in place in certainly some transformation projects.Also, smoke heat replacing device is in dustless operating condition, and no hydrogen sulfate ammonia is not allowed
Easily blocking, heat exchange efficiency are high.
Optionally, the gas inlet of the host shell and exhanst gas outlet are oppositely arranged, and each filter bag is along flue gas
The arrangement of horizontal direction pointed by flow direction.
Optionally, active carbon inlet zone can also be set inside the host shell, is set to the SCR denitration catalytic domain
Later, before the filter bag area, the purification system further includes active carbon injection apparatus, for spraying active carbon particle in described
Active carbon inlet zone.
Optionally, the bottom of the host shell is also provided with flue-dust retainer, the relatively described active carbon inlet zone and the filter
The setting of bag area, the purification system further includes active carbon screening plant, for separating dust and active carbon in the flue-dust retainer
Particle.
Optionally, the purification system further includes active carbon regenerating unit, the work that the active carbon screening plant is isolated
Property charcoal be regenerated for the active carbon injection apparatus through the active carbon regenerating unit and be recycled.
Optionally, the active carbon regenerating unit is set to the outside of the host shell, is Multi-layer activation furnace, flowing
Layer activation furnace or rotary activated furnace.
Optionally, the active carbon screening plant is set to inside the flue-dust retainer.
Optionally, further include active carbon conveying device, be set to outside the flue-dust retainer, in the active carbon conveying device
Under power effect, the active carbon particle that the active carbon screening plant is isolated enters the regeneration screening plant.
Optionally, the heat-exchanger rig includes finned tube exchanger.
Optionally, the filter bag is alloy filter bag.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of purification system in a kind of embodiment of the utility model.
Wherein, in Fig. 1:
Gas inlet flue 1, desulfurizing agent injection apparatus 2, import horn structure 3, electric field region 4, denitration reaction object injection dress
Set 5, SCR denitration catalytic domain 6, active carbon injection apparatus 7, filter bag area 8, pulse spraying equipment 9, heat-exchanger rig 10, outlet loudspeaker
Structure 11, exhanst gas outlet flue 12, flue-dust retainer 13, active carbon screening plant 14, active carbon regenerating unit 15, active carbon conveying dress
Set 16, host shell 17.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the utility model, with reference to the accompanying drawing and have
The utility model is described in further detail for body embodiment.
Referring to FIG. 1, Fig. 1 is the structural schematic diagram of purification system in a kind of embodiment of the utility model.
The purification system of removing multi-pollutant provided by the utility model includes having gas inlet and exhanst gas outlet
The gas inlet of host shell 17, host shell 17 is directly connected to boiler flue gas outlet.The system for hot environment effect compared with
It is good, it is of course also possible to be used for middle low-temperature flue gas purification.
Purification system further includes desulfurizing agent injection apparatus 2 and denitration reaction object injection apparatus 5, in order to save host shell 17
Inner space, desulfurizing agent injection apparatus 2 and denitration reaction object injection apparatus 5 can be set in the outside of host shell 17.It is de-
Sulphur agent injection apparatus 2 is used for the channel interior injection desulfurization of gas inlet and boiler flue gas outlet to connection host shell 17
Grain is to be used for Dry desulfurization；As shown in Figure 1, the nozzle of desulfurizing agent injection apparatus 2 is installed on 1 inner wall of gas inlet flue.In master
The external progress desulfurization of casing body 17, which can be reduced, occupies 17 inner space of host shell.
Desulfurization particle can be to the SO in flue gas2/SO3It is removed, generation product is sulphate particle, sulphite
Grain, desulfurization particle can be the alkali grains such as sodium carbonate, sodium bicarbonate, sodium hydroxide, calcium hydroxide, magnesium hydroxide.
And wet misty rain phenomenon will not be generated using above-mentioned dry desulfurization, the risks such as equipment corrosion are not had, will not generate
Secondary pollution；In dry method desulfuration system, HgO and Hg2+Flying dust, calcium sulfate or calcium sulfite particles table can be potentially attracted to
Face, when flue gas passes through subsequent electric field area 4, particulate Hg can be easy to be adsorbed and capture.
It along flow of flue gas direction, has been sequentially arranged inside host shell 17 with lower component: electric field region 4, SCR (full name in English
Selective Catalytic Reduction) denitration catalyst area 6, filter bag area 8 and heat transfer zone.
Electric field region 4 is equipped with charging component, charged for carrying out to the solid particle in flue gas；Desulfurization product is in electric field region 4
It can be removed.Charging component can be high-voltage pulse charging component, can efficiently remove including large dust particle, particle
80% or more dust including mercury can greatly reduce solid dust to urging so that it is low dirt denitration that subsequent denitration operating condition, which improves,
Agent wash away and dust in catalyst blockage and poisoning caused by harmful components, greatly prolong denitrating catalyst and use the longevity
Life improves denitration efficiency, further decreases subsequent denitration catalyst area volume, and then further decrease equipment volume.It can produce simultaneously
Raw a large amount of high energy electron and O, OH isoreactivity free radical are in turn to the SO in flue gas2、NOX, the gas molecules such as Hg aoxidized,
The reactions such as degradation convert pollutant, to be injected into NH3Synergistic effect is generated afterwards generates the micro- of ammonium sulfate, ammonium nitrate and its double salt
Grain, can further remove the SO in flue gas2, and tentatively remove NOX, the impurity such as Hg, cooperation-removal multiple pollutant reduces SCR and urges
The caltalyst accumulated amount of change system 6.
The front end of electric field region 4 can be import horn structure 3, and the air-flows such as orifice plate and guide vane can be set in the region
Even distribution device improves system effectiveness to improve the air flow method in device, reduces system resistance.
The SCR denitration catalytic domain 6 of host shell 17 is equipped with denitrating catalyst, sprays dress injection with denitration reaction object
The collaboration of denitration reaction object removes nitre.Denitration reaction object can be gaseous ammonia, can make in the auxiliary of high energy electron and living radical
Under, using plasma effect and electric catalyticing effect, NO is removed in advance before denitration2、N2O5、SO2, the multiple pollutants such as mercury, and
NO is removed under the action of catalyst in SCR catalysis system, and then removes NO completelyX, greatly reduce the usage amount of catalyst, drop
Low equipment cost.
SCR catalysis is to utilize reducing agent NH3Metallic catalyst effect under, selectively with NOXReaction generates N2And H2O,
SCR denitration removes a part of mercury using the modified catalyst that can be improved to the oxidation susceptibility of nonvalent mercury in advance；Denitration
Operating condition is low dirt denitration, and denitration region flue gas flow rate is lower, less to catalyst abrasion.
As described above, desulfurization product is removed in electric field region 4 to generate ammonium hydrogen sulfate and bisulfite to avoid in the area
Ammonium causes the fouling and blocking of catalyst.
Filter bag is disposed with inside filter bag area 8, the quantity of filter bag can be arranged according to specifically used environment.Filter bag can be preferential
Choosing has alloy filter bag, has the characteristics that high temperature resistant, corrosion resistant.Filter bag can be trapped with depth, remove fine dust and absorption
The particle of the impurity such as mercury, ammonia.
Heat transfer zone is equipped with heat-exchanger rig 10, for absorbing the heat in flue gas for adding to boiler inlet air
Heat.
The heat of high-temperature flue gas can be transmitted into the air before boiler by heat-exchanger rig 10 in this way, by air preheat
To certain temperature, boiler heat exchange performance is improved, reduces thermal losses.I.e. extraneous fresh air absorption flows through in purification system
10 flue gas heat of heat-exchanger rig be warmed after, flow into the import of boiler.The air preheat in previous system can be substituted in this way
Device solves the problems, such as that place is limited in some transformation projects.Also, smoke heat replacing device 10 is in dustless operating condition, no hydrogen sulfate
Ammonia, it is not easy to block, heat exchange efficiency is high.
In conclusion purification system provided by the utility model can be completed under worst hot case, in set of system
The cooperation-removals such as dirt, sulphur, nitre, mercury and the energy saving for realizing boiler, occupied area is small, small investment, gas cleaning and energy conservation effect
Fruit is significant.
In a kind of specific embodiment, the gas inlet and exhanst gas outlet of host shell 17 are oppositely arranged, and each
The filter bag arrangement of the horizontal direction pointed by the flow of flue gas direction.
Filter bag is horizontally disposed to be had the advantage that
1) it ensure that airflow direction as horizontal disengaging, air flow method is uniform, and system resistance is small；
2) space utilization rate is high；
3) under identical filter area, filter bag quantity can be increased, shorten filter bag length, so that pulse jet effect is more
It is good；
4) increase of filter bag quantity can reduce each filter bag exit velocity, reduce resistance of the filter bag；
5) lateral arrangement can make bag bottom in face of airflow direction, greatly reduce flue gas and wash away to filter bag surface；
6) more evenly, opposite root mean square coefficient is smaller for each filter bag rate of discharge.
In the various embodiments described above, active carbon inlet zone can also be set inside host shell 17, be set to SCR denitration catalysis
After area 6, before filter bag area 8, purification system further includes active carbon injection apparatus 7, for spraying active carbon particle in active carbon
Inlet zone.
Active carbon injection apparatus 7 ejects active carbon modified, and remaining Elemental Mercury in activated carbon adsorption flue gas is right
Flue gas carries out depth demercuration；The NH not reacted completely in activated carbon adsorption denitration region3, avoid generating the escaping of ammonia, cause atmosphere
Secondary pollution；Active carbon can adsorb other impurity depth in flue gas, remove multiple pollutant.
Further, the bottom of the host shell 17 in above-described embodiment is also provided with flue-dust retainer 13, the spray of relative activity charcoal
It penetrates area and filter bag area 8 to be arranged, purification system further includes active carbon screening plant 14, separates dust and active carbon in flue-dust retainer 13
Particle.
In the various embodiments described above, purification system can also include active carbon regenerating unit 15, and active carbon screening plant 14 divides
The active carbon separated out is regenerated for active carbon injection apparatus 7 in active carbon regenerating unit 15 and is recycled.
Wherein, active carbon regenerating unit 15 can be set in the outside of host shell 17, can be Multi-layer activation furnace, stream
Dynamic layer activation furnace or rotary activated furnace.
Above-mentioned active carbon screening plant 14 can be set inside flue-dust retainer 13, can shake for linear vibrating screen, circle
Vibrating screen, electronic grading oscillating screen etc..
The conveying of active carbon can provide power by active carbon conveying device 16, i.e., in active carbon conveying device driving force
Under effect, the active carbon particle that active carbon screening plant 14 is isolated enters regeneration screening plant 15.Active carbon conveying device 16
It can be the conveying of pipe band or pneumatic conveying.
Heat-exchanger rig 10 in the various embodiments described above may include finned tube exchanger, the heat that will be carried in flue gas, lead to
In air before crossing fin conductive to entrance boiler.
The exhanst gas outlet end of host shell 17 can be designed as outlet loudspeaker structure 11, and outlet connects external exhanst gas outlet
Flue 12.
In the various embodiments described above, pulse spraying equipment 9 can also be arranged in the inside of host shell 17, to remove filter bag surface
Dust impurity.
A kind of purification system of cooperation-removal multi-pollutant provided by the utility model is described in detail above.
Specific case used herein is expounded the principles of the present invention and embodiment, and the explanation of above embodiments is only
It is the method and its core concept for being used to help understand the utility model.It should be pointed out that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can be made to this utility model,
Modifications and modifications also fall within the protection scope of the claims of the utility model.
Claims (10)
1. a kind of purification system of cooperation-removal multi-pollutant, which is characterized in that including with gas inlet and exhanst gas outlet
The gas inlet of host shell (17), the host shell (17) is directly connected to boiler flue gas outlet, and the purification system is also wrapped
Desulfurizing agent injection apparatus (2) and denitration reaction object injection apparatus (5) are included, the desulfurizing agent injection apparatus (2) is used for connection institute
The gas inlet of host shell (17) and the channel interior injection desulfurization particle of boiler flue gas outlet are stated for Dry desulfurization；Edge
Flow of flue gas direction, the host shell (17) is internal to be sequentially arranged with lower component:
Electric field region (4) is equipped with charging component, charged for carrying out to the solid particle in flue gas；
SCR denitration catalytic domain, is equipped with denitrating catalyst, and the denitration reaction object for spraying dress injection with the denitration reaction object is assisted
With except nitre；
Filter bag area (8), is disposed with filter bag；
Heat transfer zone is equipped with heat-exchanger rig (10), for absorbing the heat in flue gas for heating to boiler inlet air.
2. the purification system of cooperation-removal multi-pollutant as described in claim 1, which is characterized in that the host shell (17)
Gas inlet and exhanst gas outlet be oppositely arranged, and each filter bag horizontal direction cloth pointed by the flow of flue gas direction
It sets.
3. the purification system of cooperation-removal multi-pollutant as described in claim 1, which is characterized in that the host shell (17)
Active carbon inlet zone can also be arranged in inside, described after being set to the SCR denitration catalytic domain, before the filter bag area (8)
Purification system further includes active carbon injection apparatus (7), for spraying active carbon particle in the active carbon inlet zone.
4. the purification system of cooperation-removal multi-pollutant as claimed in claim 3, which is characterized in that the host shell (17)
Bottom be also provided with flue-dust retainer (13), the relatively described active carbon inlet zone and the filter bag area (8) setting, the purification system
It further include active carbon screening plant (14), for separating dust and active carbon particle in the flue-dust retainer (13).
5. the purification system of cooperation-removal multi-pollutant as claimed in claim 4, which is characterized in that the purification system is also wrapped
Regeneration screening plant (15) is included, the active carbon that the active carbon screening plant (14) is isolated is through the regeneration screening plant (15)
The active carbon injection apparatus (7) is regenerated for be recycled.
6. the purification system of cooperation-removal multi-pollutant as claimed in claim 5, which is characterized in that the regeneration screening plant
(15) it is set to the outside of the host shell (17), is Multi-layer activation furnace, fluidized bed activation furnace or rotary activated furnace.
7. the purification system of cooperation-removal multi-pollutant as claimed in claim 4, which is characterized in that the active carbon screening dress
It sets (14) and is set to the flue-dust retainer (13) inside.
8. the purification system of cooperation-removal multi-pollutant as claimed in claim 5, which is characterized in that further include active carbon conveying
Device (16) is set to the flue-dust retainer (13) outside, under the active carbon conveying device driving force effect, the active carbon
The active carbon particle that screening plant (14) is isolated enters the regeneration screening plant (15).
9. the purification system of cooperation-removal multi-pollutant as claimed in any one of claims 1 to 8, which is characterized in that described to change
Thermal (10) includes finned tube exchanger.
10. the purification system of cooperation-removal multi-pollutant as claimed in any one of claims 1 to 8, which is characterized in that the filter
Bag is alloy filter bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821897782.3U CN209205022U (en) | 2018-11-16 | 2018-11-16 | A kind of purification system of cooperation-removal multi-pollutant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821897782.3U CN209205022U (en) | 2018-11-16 | 2018-11-16 | A kind of purification system of cooperation-removal multi-pollutant |
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| CN209205022U true CN209205022U (en) | 2019-08-06 |
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ID=67460016
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821897782.3U Active CN209205022U (en) | 2018-11-16 | 2018-11-16 | A kind of purification system of cooperation-removal multi-pollutant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112246062A (en) * | 2020-10-28 | 2021-01-22 | 浙江天地环保科技股份有限公司 | Integrated multi-pollutant collaborative removal system |
| CN112761761A (en) * | 2021-01-22 | 2021-05-07 | 中国船舶重工集团公司第七一一研究所 | Reactor, flue gas treatment system and control method |
-
2018
- 2018-11-16 CN CN201821897782.3U patent/CN209205022U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112246062A (en) * | 2020-10-28 | 2021-01-22 | 浙江天地环保科技股份有限公司 | Integrated multi-pollutant collaborative removal system |
| CN112761761A (en) * | 2021-01-22 | 2021-05-07 | 中国船舶重工集团公司第七一一研究所 | Reactor, flue gas treatment system and control method |
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