CN106694225A - Device for removing fine particulate matter of sintering flue gas by pulse corona charge - Google Patents
Device for removing fine particulate matter of sintering flue gas by pulse corona charge Download PDFInfo
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- CN106694225A CN106694225A CN201611256680.9A CN201611256680A CN106694225A CN 106694225 A CN106694225 A CN 106694225A CN 201611256680 A CN201611256680 A CN 201611256680A CN 106694225 A CN106694225 A CN 106694225A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
- B03C3/014—Addition of water; Heat exchange, e.g. by condensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
Abstract
The invention discloses a device for removing fine particulate matter of sintering flue gas by pulse corona charge, and belongs to the technical field of removal of pollutants in the sintering process. The device comprises a pulse charge unit, an agglomeration unit and a trapping unit, wherein the pulse charge unit, the agglomeration unit and the trapping unit are sequentially arranged in a gas pipeline in the flowing direction of the flue gas; the pulse corona electrodes of the pulse charge unit enable the particulate matter to be charged through pulse discharge; the agglomeration unit comprises an electropositive fogdrop spraying mechanism and an electronegative fogdrop spraying mechanism, wherein the electropositive fogdrop spraying mechanism or the electronegative fogdrop spraying mechanism is used for spraying fogdrops of an agglomeration agent with positive charge or negative charge into the flue gas, and the fogdrops of the agglomeration agent are agglomerated with the charged particulate matter; and the trapping unit is used for collecting the agglomerated particulate matter. According to the device, the fine particulate matter is charged by the pulse corona, and the agglomeration unit sprays the charged agglomeration agent into the flue gas so that the agglomeration effect of the particulate matter can be enhanced, and the efficiency of agglomeration and removal of the fine particulate matter can be improved.
Description
Technical field
The invention belongs to sintering process pollutant removing technical field, in particular, it is related to a kind of pulse corona charge
The device of removing sintering flue gas fine particulate matter.
Background technology
Fine particle pollutant has been now one environmental problem of sternness of China, the serious life that have impact on people
Living and health.Essentially from agglomeration for iron mine operation, agglomeration for iron mine operation is modern to the Dominant particle thing of current iron and steel metallurgical industry
Essential link in Steel Production Flow Chart, while being again the maximum PM of steel and iron industry10And PM2.5Emission source, sintering flue gas electricity
The particulate matter of annual discharge accounts for 40% of its total release or so more than 1,000,000 t after dedusting.Current sintering plant is mainly using quiet
The particulate matter that electric cleaner comes in purifying sintering flue gas, electrostatic precipitator is preferable to the coarseparticulate removal effect in flue gas, but
Fine particle (PM for particle diameter less than 10 μm10And PM2.5), because its ratio resistance is high, charge capacity is poor, efficiency of dust collection shows
Writing reduces.Sintering flue gas is by after electrostatic precipitation, more than 90% particulate matter is PM in flue gas10, more than 80% particulate matter is
PM2.5, traditional dedusting method be difficult to effectively control sintering flue gas in fine particle discharge.Urgent need develops a kind of sintering
The abjection device of flue gas fine particulate matter, so as to be effectively treated to the fine particle in sintering flue gas.
Through retrieving, for example：Chinese Patent Application No.：201310381190.1, authorized announcement date 2015 year 2 month 4 days, invention
Create entitled electric precipitation water fog charge coalescence trapping PM2.5The method of minuteness particle, this application case discloses a kind of electric precipitation water
The charged coalescence trapping PM of mist2.5The method of minuteness particle, it is characterised in that electrostatic precipitation part and liquid atomised part, through atomization
Drop corona charging in the electric field, make droplets, charged droplet and minuteness particle making contact, coalescence reunion microfine
Son, and transfer charge on minuteness particle, improving the charging performance of particle, the invention additionally provides a kind of electric precipitation water smoke
Charged coalescence traps PM2.5The device of minuteness particle, including electrostatic precipitation part and two-fluid jet atomization part, described is double
Fluid injection atomised part includes steam line, water supply line and nozzle.It is disadvantageous in that PM2.5It is charged inefficient,
Removal efficiency is poor, and apparatus structure complexity is huge.
Additionally, such as：Chinese Patent Application No.：201620055887.9, authorized announcement date is on June 29th, 2016, invention
A kind of entitled flue gas dust collecting system is created, this application case discloses a kind of flue gas dust collecting system, the dust pelletizing system includes gravity
Expansion chamber, inertia dust-removing device, cyclone dust collector and Wet type electric dust-removing device；Wherein inertia dust-removing device is arranged at gravity and sinks
Drop is indoor and is located at the smoke outlet of gravity settling chamber, the smoke outlet of gravity settling chamber and the flue gas of cyclone dust collector
Arrival end is connected；Wet type electric dust-removing device is arranged at the smoke outlet of cyclone dust collector.This application case is relative to existing
There is Wet type electric dust-removing device to improve efficiency of dust collection to a certain extent, but it is disadvantageous in that using cleaner species
More, crushing is big, high energy consumption.
The content of the invention
1. the invention technical problem to be solved
The present invention is limited to the treatment effect of the fine particle in flue gas for existing dedusting method, it is difficult to effectively control
A kind of problem of the discharge of fine particle in system sintering flue gas, there is provided pulse corona charge removing sintering flue gas fine particulate matter
Device, make fine particle charged by impulse electric corona, agglomeration unit sprays into electrically charged agglomerator can be with reinforcing particle thing
Agglomerating effect, improves the reunion removal efficiency of fine particle, can control to sinter the discharge of flue gas fine particulate matter.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of device of pulse corona charge removing sintering flue gas fine particulate matter of the invention, including the charged list of pulse
Unit, the pulse charge unit is provided with impulse electric corona electrode, and impulse electric corona electrode makes particulate matter carry electric charge by pulsed discharge；
Agglomeration unit, the agglomeration unit include positive electricity droplet spraying mechanism and negative electricity droplet spraying mechanism, positive electricity droplet spraying mechanism or
Person's negative electricity droplet spraying mechanism is used for agglomerator droplet of the penetrating in flue gas with positive charge or negative electrical charge, agglomerator droplet
Reunite with the particulate matter with electric charge；Capture unit, the capture unit is used to trap the particulate matter after reuniting；Described pulse lotus
Electric unit, agglomeration unit and capture unit are set in turn in gas pipeline along the flow direction of flue gas.
Preferably, described positive electricity droplet spraying mechanism includes positive corona atomizing nozzle, positive corona electrode and positive corona electricity
Source, the shower nozzle one of described positive corona atomizing nozzle is arranged in flue, and positive corona electrode is arranged at positive corona atomization spray
In pipe, positive corona electrode is connected with positive corona power supply.
Preferably, described negative electricity droplet spraying mechanism includes negative corona atomizing nozzle, negative corona electrode and negative corona electricity
Source, the shower nozzle two of described negative corona atomizing nozzle is arranged in flue, and negative corona electrode is arranged at negative corona atomization spray
In pipe, negative corona electrode is connected with negative corona power supply.
Preferably, pulse power frequency used by described impulse electric corona electrode is 150~250Hz, voltage 50~
110kV。
Preferably, described gas pipeline is removing pipeline, the diameter with diameter greater than flue of the removing pipeline, institute
The inlet end of the removing pipeline stated is connected by expanding pipe with flue.
Preferably, also including pretreatment unit, pretreatment unit is used for penetrating agglomerator or water or salting liquid in flue gas
Droplet.
Preferably, the agglomerator or the mist droplet particle size of water or salting liquid that pretreatment unit is sprayed into are 0.2~3 μm.
Preferably, described pretreatment unit is arranged at the pipeline axle center of expansion pipe.
Preferably, pretreatment unit includes pretreatment jet pipe and diversion component, and wherein diversion component is arranged at pretreatment spray
The weather side of pipe, pretreatment jet pipe is used for the droplet that agglomerator or water or salting liquid are sprayed into pipeline.
3. beneficial effect
The technical scheme provided using the present invention, compared with prior art, is had the advantages that：
(1) device of a kind of pulse corona charge removing sintering flue gas fine particulate matter of the invention, pulse charge unit,
Agglomeration unit and capture unit are set in turn in gas pipeline along the flow direction of flue gas, and fine is made by impulse electric corona
Grain thing is charged, and agglomeration unit sprays into the agglomerating effect that electrically charged agglomerator enhances particulate matter, improves the group of fine particle
Poly- removal efficiency, the effectively discharge of control sintering flue gas fine particulate matter；
(2) device of a kind of pulse corona charge removing sintering flue gas fine particulate matter of the invention, pretreatment unit
When pretreatment jet pipe is to the droplet that water is sprayed into flue gas, by the medium grain size particle knot in droplet particle and fine particle
Close, particulate matter combines to form larger particles and forms clad, increase with the mixture of water or in surface particles with water
Grain diameter in grain thing so that particulate matter avoids medium grain size, reduces the ratio of the interval fine particle of medium grain size
Example, and then medium grain size charging particle effect is enhanced, so as to the reunion for promoting fine particle is grown up, improve fine
The removal efficiency of grain thing.
Brief description of the drawings
Fig. 1 is the structural representation of embodiments of the invention 1；
Fig. 2 is the structural representation of embodiments of the invention 2；
Fig. 3 is the structural representation of embodiments of the invention 3；
Fig. 4 is the structural representation that the diversion component of embodiments of the invention 3 is arranged at expansion pipe；
Fig. 5 is the structural representation of embodiments of the invention 4.
Label declaration in schematic diagram：
100th, pulse charge unit；110th, impulse electric corona electrode；
200th, agglomeration unit；210th, positive electricity droplet spraying mechanism；211st, positive corona atomizing nozzle；212nd, positive corona electrode；
213rd, positive corona power supply；214th, shower nozzle one；220th, negative electricity droplet spraying mechanism；221st, negative corona atomizing nozzle；222nd, negative corona
Electrode；223rd, negative corona power supply；224th, shower nozzle two；230th, corona power supply source；
300th, capture unit；310th, collector electrode；312nd, positive electrode is trapped；313rd, negative electrode is trapped；320th, collector；
400th, pretreatment unit；410th, jet pipe is pre-processed；420th, diversion component；421st, the first baffle；422nd, second lead
Stream block；
500th, pipeline is removed；510th, expansion pipe；520th, collapsible tube；530th, baffle plate；
600th, flue.
Specific embodiment
Hereafter the detailed description to exemplary embodiment of the invention with reference to accompanying drawing, and the accompanying drawing forms of description
Point, show enforceable exemplary embodiment of the invention as an example in the figure.Although these exemplary embodiment quilts
Fully describe in detail to enable that those skilled in the art implement the present invention, it is to be understood that can realize other embodiment and
Can without departing from the spirit and scope of the present invention to the present invention various changes can be made.Hereafter to embodiments of the invention
More detailed description is not limited to required the scope of the present invention, and does not limit just to being illustrated and right
The description of the features of the present invention and feature, to propose to perform best mode of the invention, and is sufficient so that those skilled in the art
The present invention can be implemented.Therefore, the scope of the invention is only defined by the appended claims.
Hereafter detailed description of the present invention and example embodiment can more fully understand with reference to accompanying drawing, wherein of the invention
Element and feature are identified by reference.
Embodiment 1
As shown in figure 1, fine particulates device in a kind of corona discharge pulse removing agglomeration for iron mine flue gas of the present embodiment,
Including pulse charge unit 100, agglomeration unit 200 and capture unit 300；Pulse charge unit 100, agglomeration unit 200 and catch
Collection unit 300 is set in turn in gas pipeline along the flow direction of flue gas, wherein described gas pipeline is removing pipeline
500, the diameter with diameter greater than flue 600 of the removing pipeline 500, the inlet end of described removing pipeline 500 passes through to expand
Open pipe 510 to be connected with flue 600, the outlet side for removing pipeline 500 is connected by collapsible tube 520 with flue 600, i.e.,
Removing pipeline 500 is installed in series on flue 600, and flue gas enters removing pipeline 500 by expansion pipe 510, after reunion is grown up
Flue 600 is entered by collapsible tube 520, due to removing the diameter with diameter greater than flue 600 of pipeline 500, so that
The flue gas flow rate in removing pipeline 500 is reduced, the time that increase emission reduction is reunited, emission reduction effect is improve.
The pulse charge unit 100 of the present embodiment is provided with impulse electric corona electrode 110, and impulse electric corona electrode 110 passes through arteries and veins
Impulse electricity makes particulate matter carry the charges of different polarity；Described impulse electric corona electrode 110 is provided with three rows, strengthens charged efficiency, and arteries and veins
Pulse power frequency used by corona electrode 110 is rushed for 150~250Hz, the preferred 200Hz of the present embodiment, voltage in 50~110kV,
The preferred 80kV of the present embodiment；Impulse electric corona electrode 110 makes particulate matter carry the charges of different polarity by pulsed discharge.
Its reason is due in high-voltage pulse corona ring border, it is understood that there may be two kinds of charged mechanism：Diffusional charging and electric field
Charged, under two kinds of collective effects of charged mechanism, particulate matter can become positively charged lotus or negative electrical charge, and applicant is surprised
It was found that when particle size is different, diffusional charging can show the different leading role in place with electric-field charge, i.e., when particulate matter grain
Diffusional charging plays a leading role when footpath is smaller, and makes particulate matter positively charged, and when particle size is larger, electric-field charge rises leading
Effect, and make particulate matter negatively charged, the particulate matter of positively charged in the presence of electronics Coulomb force, is inhaled with electronegative particulate matter
Draw, flock together, so as to the reunion for enhancing particle is grown up.
It is further to enter agglomeration unit 200 after particulate matter with the charges of different polarity itself attraction, forming core；Agglomeration unit
The downwind side of 200 flue gas flow directions for being arranged on pulse charge unit 100, agglomeration unit 200 includes positive electricity droplet spraying mechanism 210
With negative electricity droplet spraying mechanism 220, positive electricity droplet spraying mechanism 210 or negative electricity droplet spraying mechanism 220 are used in flue gas
The agglomerator droplet with positive charge or negative electrical charge is sprayed into, agglomerator droplet is reunited with the particulate matter with the charges of different polarity.Institute
The positive electricity droplet spraying mechanism 210 stated is arranged at the weather side of negative electricity droplet spraying mechanism 220, i.e. flue gas and first passes through positive electricity droplet
Spraying mechanism 210 moves to negative electricity droplet spraying mechanism 220 again.
Wherein, what deserves to be explained is：Positive electricity droplet spraying mechanism 210 includes positive corona atomizing nozzle 211, positive corona electrode
212 and positive corona power supply 213, described positive corona electrode 212 is connected with positive corona power supply 213, and the positive corona electrode 212 is set
At the import of positive corona atomizing nozzle 211, positive corona electrode 212 causes the group in positive corona atomizing nozzle 211 by electric discharge
Poly- agent carries positive charge, and the port of export of positive corona atomizing nozzle 211 is provided with shower nozzle 1, and the shower nozzle 1 is arranged at removing
In pipeline 500, shower nozzle 1 be used for removing pipeline 500 in spray into positively charged droplet, and shower nozzle 1 injection direction
In opposite direction with flow of flue gas, fine particle and agglomerator shower nozzle head on the agglomerator droplet touch opportunity of ejection in flue gas
Increase.Through pulse corona electrode 110 process after, the fine particle with negative electricity in the presence of Coulomb force with the droplet of positive electricity
Attract each other, agglomerator droplet flocks together with the fine particle with negative electricity, then the electric charge in particulate matter and reunion
Electric charge in agent is mutually neutralized, and after particulate matter condenses together with agglomerator, under the cementation of agglomerator, agglomerator will
Particulate matter is bonded together, and reunion is grown up, and the combination by charge attraction so as to promote fine particle and agglomerator is imitated
Rate, and improve the agglomerating effect of fine particle.
Negative electricity droplet spraying mechanism 220 includes negative corona atomizing nozzle 221, negative corona electrode 222 and negative corona power supply
223, the negative corona electrode 222 is connected with negative corona power supply 223, and negative corona electrode 222 is arranged at negative corona atomizing nozzle 221
At import, negative corona electrode 222 causes that the agglomerator of negative corona atomizing nozzle 221 carries negative electrical charge by electric discharge.Negative corona mist
The port of export for changing jet pipe 221 is provided with shower nozzle 2 224, and shower nozzle 2 224 is arranged in removing pipeline 500, shower nozzle 2 224 be used for
Electronegative droplet is sprayed into removing pipeline 500；And the injection direction of shower nozzle 2 224 is in opposite direction with flow of flue gas.Similarly,
After being processed through pulse corona electrode 110, partial particulate thing carries positive charge, i.e. partial particulate with positive charge；Of course pass through
Fine particle after the treatment of positive electricity droplet spraying mechanism 210, after fine particle is combined with the droplet of positively charged, may performance
Positive electrical feature.Fine particle with positive charge or the agglomerated particle of positive charge is carried after being combined with agglomerator, in storehouse
Attracted each other with electronegative droplet in the presence of logical sequence power, after particulate matter condenses together with agglomerator, in the viscous of agglomerator
Under knot effect, agglomerator continues to be bonded together particulate matter, by charge attraction so as to promote fine particle and reunite
The joint efficiency of agent, and improve the agglomerating effect of fine particle.
Particle carries positive charge or negative electrical charge after being processed through pulse corona electrode 110, should carry positive charge or negative electricity
The particulate matter of lotus, sprays into positive electricity droplet spraying mechanism 210 and negative electricity droplet spraying mechanism 220 and carries positive charge or negative electrical charge
Agglomerator, particulate matter is attracted each other with the agglomerator of diversity, and flocks together, and the particulate matter after aggregation is being reunited
Under the cementation of agent, constantly collided between particulate matter, bond and grow up, promote particulate matter reunite grow up, and formed compared with
Big particulate matter.
It is fine during fine particle in flue gas sequentially passes through pulse charge unit 100, agglomeration unit 200
After pulse charge unit 100 is charged, the particulate matter of different-grain diameter carries the charges of different polarity to particulate matter after charged, in the charges of different polarity
Driving under, particulate matter attract each other and formed reunion core, then positive electricity droplet spraying mechanism 210 to removing pipeline 500 spray
Enter the droplet of positively charged, in the presence of the agglomerator droplet of positively charged, particulate matter is further combined and reunited and starts length
Greatly；Then negative electricity droplet spraying mechanism 220 sprays into electronegative droplet to removing pipeline 500, and electronegative agglomerator droplet enters
One step is combined with the particle or aggregate of positively charged, and a step-length of going forward side by side is big, is that follow-up trapping provides safeguard.
Above-mentioned capture unit 300 is used to trap the particulate matter after reuniting；Described capture unit 300 includes collector electrode
310 and collector 320, the particulate matter that the particulate matter after reunion catches by collector electrode 310, colelctor electrode of being caught 310, trapping electricity
Pole 310 is provided with vibrating device, during vibrating device is shaken off or is expelled to collector 320 during the vibration, and is received
Storage 320 is collected, and the bottom of collector 320 is provided with opening valve, and opening valve is used for exhaust particulate matter.When collector 320 is collected into one
The particulate matter that opening valve discharge is collected is opened when quantitative.Capture unit 300 is used to trap the particulate matter after reuniting, and will
The particle cluster of trapping is collected；Pulse charge unit 100, agglomeration unit 200 and capture unit 300 along flue gas flowing side
To being set in turn in removing pipeline 500, i.e., by the weather side of flow of flue gas to downwind side, it is disposed with pulse charge unit
100th, agglomeration unit 200 and capture unit 300；The present apparatus easily makes fine particle charged and charged agglomerator agglomeration, plus
It is strong to PM2.5And PM10Electrostatic effect.The agglomerator of the present embodiment is the aqueous solution of sodium carboxymethylcellulose (CMC),
The mass concentration of solution is 0.02%.
Emission reduction effect using the fine particle of the removing means is as follows, wherein：PM10 emission reduction efficiencies (%) are：
44.1%, PM2.5 emission reduction efficiency (%)：28.3%.Improve the emission reduction effect of fine particle.Make fine by impulse electric corona
The grain thing lotus charges of different polarity, can strengthen charged agglomerator aggregation, improve the reunion removal effect of fine particle.
Embodiment 2
As shown in Fig. 2 the substance of the present embodiment is with embodiment 1, difference is：Also include pretreatment unit
400, pretreatment unit 400 is used for the droplet that agglomerator or water or salting liquid are sprayed into flue gas, and what the present embodiment was used is water,
And the agglomerator of the penetrating of pretreatment unit 400 or the mist droplet particle size of water are 0.2~3 μm.Pretreatment unit therein 400 includes pre-
Treatment jet pipe 410, the pretreatment jet pipe 410 is used for the droplet that agglomerator or water or salting liquid are sprayed into flue gas, the present embodiment
Spray into be：The droplet of water, mist droplet particle size is 0.2~3 μm.
Emission reduction effect using the fine particle of the removing means is as follows, wherein：PM10 emission reduction efficiencies (%) are：
47.1%, PM2.5 emission reduction efficiency (%)：34.3%, improve the emission reduction effect of fine particle.Compared to embodiment 1, PM10 emission reductions
Efficiency (%) is：47.1%, PM2.5 emission reduction efficiencies (%) are brought up to by 44.1%：34.3% is brought up to by 28.3%.By anti-
Its mechanism is discussed again, and thinks that its mechanism is probably：
(1) emission reduction efficiency of PM10/2.5 has been lifted, its reason be probably pretreatment unit 400 to flue gas in it is fine
Particulate matter is pre-processed so that the fine particle in flue gas carries out the pre- agglomerating effect grown up, improve entirety, so as to carry
The overall emission reduction effect of fine particle high.
(2) in high-voltage pulse corona ring border, two kinds of charged mechanism be may be simultaneously present：Diffusional charging and electric-field charge,
Applicant is had found by long-term research：Wherein diffusional charging mechanism can make fine particle positively charged, and electric-field charge mechanism can
Make fine particle negatively charged；Most critical is that diffusional charging and electric-field charge can show place when particle size is different
Different leading roles, i.e., when particle size is smaller, diffusional charging plays a leading role, and makes particulate matter positively charged, works as particle
Electric-field charge plays a leading role when thing particle diameter is larger, and makes particulate matter negatively charged；But, when particle size falls between
When (follow-up referred to as：Medium grain size particle), two kinds of mechanism of diffusional charging and electric-field charge can show Competition, and make
Grain thing is not charged, during by adding the pretreatment jet pipe 410 of pretreatment unit 400 to the droplet that water is sprayed into flue gas, it may be possible to
Improve and combined with the medium grain size particle in fine particle by droplet particle, droplet and the medium grain size particle of water are constituted
Larger particulate matter, it is important to note that be here formed as larger particulate matter not just particulate matter being acted in water smoke drop
Under agglomerate into larger particulate matter, and be particulate matter with water combine to form larger particles and water mixture or
Grain thing surface forms clad, the grain diameter in increase particulate matter so that particulate matter avoids medium grain size, reduces medium
The ratio of the fine particle of particle size interval, therefore after extra pulse charge unit 100, fine particle is substantially all can positively charged
Or negative electricity, and then medium grain size charging particle effect is enhanced, cooperateed with by pretreatment unit 400 and impulse electric corona electrode 110
Effect, improves the charged effect of particulate matter in flue gas, and for the reunion of follow-up particulate matter provides sound assurance, overcome existing
Technical barrier in technology, with significant progressive.
Embodiment 3
As shown in Figure 3 and Figure 4, with embodiment 2, difference is the substance of the present embodiment：Described pretreatment
Unit 400 is arranged on the pipeline axle center of expansion pipe 510, and pretreatment unit 400 includes pretreatment jet pipe 410 and diversion component
420, wherein diversion component 420 is arranged at the weather side of pretreatment jet pipe 410, and diversion component 420 is arranged at expansion pipe 510
Tube wall marginal position, wherein diversion component 420 include the first baffle 421 and the second baffle 422, and the first baffle 421 sets
The weather side of the second baffle 422 is placed in, the first baffle 421 and the second baffle 422 are arranged at the margin location of expansion pipe 510
Put, and the front of pretreatment jet pipe 410 is not provided with baffle, so as to enhance the droplet of salting liquid and the bag of particulate matter
Wrap up in, combine, the connecting line of the second corresponding baffle 422 of the first baffle 421 parallel to expansion pipe 510 tube wall, the
One baffle 421 and the second baffle 422 collectively form the diversion component 420 of " umbrella " shape, and the diversion component 420 for being somebody's turn to do " umbrella " shape sets
It is placed in the weather side of pretreatment jet pipe 410.Pretreatment jet pipe 410 is connected with the storage bin of salting liquid, and pretreatment jet pipe 410 is used for
To the droplet that salting liquid is sprayed into pipeline, pretreatment jet pipe 410 is located on the pipeline axle center of expansion pipe 510, the droplet of salting liquid
Particle diameter is 0.2~3 μm, and salting liquid is NaCl solution.
PM10 emission reduction efficiencies (%) are：45.2%, PM2.5 emission reduction efficiency (%)：36.8%.This implementation is by setting water conservancy diversion
Part 420, the first baffle 421 and the second baffle 422 collectively form the arrangement of " umbrella " shape, so as to enhance disturbing for flue gas
Stream, promotes flue gas and particulate matter to be flowed to middle part, and particulate matter collided with salting liquid in penetrating pipeline, combined, and then sends out
It is raw to reunite or parcel, the droplet of salting liquid and the reunion of particulate matter or parcel, increase the particle diameter of particulate matter, so as to reduce
The particulate matter ratio of medium grain size.So as to improve removal effect.
Embodiment 4
As shown in figure 5, the substance of the present embodiment is with embodiment 1, difference is：The positive pole of corona power supply source 230
It is connected with positive corona electrode 212, the negative pole of corona power supply source 230 is connected with negative corona electrode 222, so as to ensure that positive corona electricity
It is essentially identical that pole 212 and negative corona electrode 222 are provided the quantity of electric charge of positive and negative charge.
Collector electrode 310 includes trapping power supply 311, trapping positive electrode 312 and trapping negative electrode 313, and trapping positive electrode
312 weather sides for being arranged at trapping negative electrode 313, i.e. flue gas first pass through trapping positive electrode 312 and are flowing to trapping negative electrode
313.Wherein the trapping positive pole of power supply 311 is connected with trapping positive electrode 312, traps the negative pole of power supply 311 and the trapping phase of negative electrode 313
Even.Particulate matter with different electric charges by after positive electricity droplet spraying mechanism 210 and negative electricity droplet spraying mechanism 220, substantially
Reunite and grown up, and carried upper different electric charge.If particulate matter aggregate carries negative electrical charge, then trapping positive electrode
312 attract each other with particulate matter aggregate, and in the presence of Coulomb force, particulate matter aggregate is attracted to trapping positive electrode
On 312；Particulate matter aggregate carries positive charge, then trapping negative electrode 313 attracts each other with particulate matter aggregate, and in coulomb
In the presence of power, particulate matter aggregate be attracted to trapping negative electrode 313 on, vibrating device shaken off during vibration or
Person is expelled in collector 320, and is collected by collector 320.So as to improve gather dust effect of the collector electrode 310 to particulate matter
Really, improve fine particle removal effect.
Additionally, being provided with baffle plate 530 between pulse charge unit 100 and agglomeration unit 200, the agglomeration unit 200 is located at
Removing pipeline 500, it is arranged between pulse charge unit 100 and agglomeration unit 200, and baffle plate 530 promotes removing pipeline 500
The disturbance of middle flue gas, and self aggregation procedure of fine particle is enhanced, the agglomerating effect of nucleation process is improve, so as to be
Positive electricity droplet spraying mechanism 210 and negative electricity droplet spraying mechanism 220 spray into the material for how having different electric charges so that fine particle
Reunited, improve agglomerating effect, so as to promote the removing of fine particle.In the present embodiment pre-process jet pipe 410 to
The droplet of agglomerator is sprayed into pipeline, agglomerator is the aqueous solution of sodium carboxymethylcellulose (CMC).
Emission reduction step of the invention, it is specific as follows：
Step one：Fine particle pulse is charged
The pretreatment unit 400 that flue gas is introduced into removing means is pre-processed, and the removing means is above-mentioned one kind
Fine particulates device in corona discharge pulse removing agglomeration for iron mine flue gas, pretreatment unit 400 includes pretreatment jet pipe 410,
The pretreatment jet pipe 410 is used for the droplet that agglomerator or water or salting liquid are sprayed into flue gas, and mist droplet particle size is 0.2~3 μm；It is micro-
Fine particle combines to form larger particles with agglomerator or water or salting liquid, and agglomerator or water or salting liquid are in fine particle
Surface forms clad, the grain diameter in increase particulate matter so that particulate matter avoids medium grain size, reduces medium grain size
The ratio of interval fine particle；
Pretreated flue gas enters the removing pipeline 500 of removing means, in the impulse electric corona electricity of pulse charge unit 100
In the presence of pole 110, fine particle carries electric charge through pulsed discharge, and fine particle is according to grain graininess difference by with different
Property electric charge；
The charged reunion of step 2, particulate matter is grown up
Fine particle after charged enters agglomeration unit 200, and flue gas first passes through positive electricity droplet spraying mechanism 210, positive electricity
Droplet spraying mechanism 210 is to the droplet that positively charged is sprayed into removing pipeline 500, the droplet of particulate matter and positively charged with negative electricity
Attraction agglomerates into particle cluster；Then smoke movement is to negative electricity droplet spraying mechanism 220, negative electricity droplet spraying mechanism 220
To electronegative droplet is sprayed into removing pipeline 500, electronegative droplet attracts to agglomerate into particle with the droplet of positively charged
Aggregate；The particulate matter of positively charged is likely to be pulsed discharge makes its positively charged, it is also possible to be particulate matter and agglomerator droplet
With reference to rear positively charged；
Step 3, trapping aggregate
Capture unit 300 is moved to compared with particle cluster, the collector electrode 310 of capture unit 300 is by the particle after reunion
Thing is trapped, and vibrates collector electrode 310, and the particulate matter being captured during vibration is shaken off or is expelled in collector 320,
By the fine particle removing in flue gas.
The present invention is described in detail above in conjunction with specific exemplary embodiment.It is understood, however, that can not take off
Various modifications and variations are carried out in the case of the scope of the present invention being defined by the following claims.Detailed description and drawings
Should be to be considered only as it is illustrative and not restrictive, if there is any such modification and modification, then they all will
Fall into the scope of the present invention described here.Additionally, background technology is intended to illustrate the Development Status and meaning of this technology,
It is not intended to limit the present invention or the application and application field of the invention.
More specifically, although exemplary embodiment of the invention has been described herein, the invention is not limited in
These embodiments, but including those skilled in the art according to above detailed description it can be appreciated that it is modified, omit,
Any and whole embodiments of (such as between each embodiment) combination, adaptive change and/or replacement.In claim
Restriction can widely be explained according to the language used in claim, and be not limited in foregoing detailed description or in reality
The example described during applying this application, these examples are considered as nonexcludability.For example, in the present invention, term is " preferably
Ground " not exclusively, preferably, here it means that " but be not restricted to that ".It is in office where method or process claims
In any step for enumerating can in any order perform and be not limited to the order proposed in claim.Therefore, the present invention
Scope only should be determined by appended claims and its legal equivalents, rather than by descriptions and examples given above come
It is determined that.
Claims (9)
1. a kind of pulse corona charge removing sinters the device of flue gas fine particulate matter, it is characterised in that：Including
Pulse charge unit (100), the pulse charge unit (100) is provided with impulse electric corona electrode (110), impulse electric corona electrode
(110) particulate matter is made to carry electric charge by pulsed discharge；
Agglomeration unit (200), the agglomeration unit (200) includes positive electricity droplet spraying mechanism (210) and negative electricity droplet spraying mechanism
(220), positive electricity droplet spraying mechanism (210) or negative electricity droplet spraying mechanism (220) in flue gas for spraying into positive electricity
Lotus or the agglomerator droplet of negative electrical charge, agglomerator droplet are reunited with the particulate matter with electric charge；
Capture unit (300), the capture unit (300) is for trapping the particulate matter after reuniting；
Described pulse charge unit (100), agglomeration unit (200) and capture unit (300) along flue gas flow direction according to
It is secondary to be arranged in gas pipeline.
2. a kind of pulse corona charge removing according to claim 1 sinters the device of flue gas fine particulate matter, its feature
It is：Described positive electricity droplet spraying mechanism (210) includes positive corona atomizing nozzle (211), positive corona electrode (212) and positive electricity
Dizzy power supply (213), the shower nozzle one (214) of described positive corona atomizing nozzle (211) is arranged in flue, positive corona electrode
(212) it is arranged in positive corona atomizing nozzle (211), positive corona electrode (212) is connected with positive corona power supply (213).
3. a kind of pulse corona charge removing according to claim 1 sinters the device of flue gas fine particulate matter, its feature
It is：Described negative electricity droplet spraying mechanism (220) includes negative corona atomizing nozzle (221), negative corona electrode (222) and negative electricity
Dizzy power supply (223), the shower nozzle two (224) of described negative corona atomizing nozzle (221) is arranged in flue, negative corona electrode
(222) it is arranged in negative corona atomizing nozzle (221), negative corona electrode (222) is connected with negative corona power supply (223).
4. a kind of pulse corona charge removing according to claim 1 sinters the device of flue gas fine particulate matter, its feature
It is：Pulse power frequency used by described impulse electric corona electrode (110) is 150~250Hz, and voltage is in 50~110kV.
5. a kind of pulse corona charge removing according to claim any one of 1-4 sinters the dress of flue gas fine particulate matter
Put, it is characterised in that：Described gas pipeline for removing pipeline (500), the removing pipeline (500) with diameter greater than flue
(600) diameter, the inlet end of described removing pipeline (500) is connected by expanding pipe (510) with flue (600).
6. a kind of pulse corona charge removing according to claim 5 sinters the device of flue gas fine particulate matter, its feature
It is：Also include pretreatment unit (400), pretreatment unit (400) is for penetrating agglomerator or water or salting liquid in flue gas
Droplet.
7. a kind of pulse corona charge removing according to claim 6 sinters the device of flue gas fine particulate matter, its feature
It is：The agglomerator or the mist droplet particle size of water or salting liquid that pretreatment unit (400) is sprayed into are 0.2~3 μm.
8. a kind of pulse corona charge removing according to claim 7 sinters the device of flue gas fine particulate matter, its feature
It is：Described pretreatment unit (400) is arranged at the pipeline axle center of expansion pipe (510).
9. a kind of pulse corona charge removing according to claim 8 sinters the device of flue gas fine particulate matter, its feature
It is：Pretreatment unit (400) includes pretreatment jet pipe (410) and diversion component (420), and wherein diversion component (420) is set
In the weather side of pretreatment jet pipe (410), pretreatment jet pipe (410) is for spraying into agglomerator or water or salting liquid in pipeline
Droplet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611256680.9A CN106694225A (en) | 2016-12-30 | 2016-12-30 | Device for removing fine particulate matter of sintering flue gas by pulse corona charge |
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| CN201611256680.9A CN106694225A (en) | 2016-12-30 | 2016-12-30 | Device for removing fine particulate matter of sintering flue gas by pulse corona charge |
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| CN201611256680.9A Pending CN106694225A (en) | 2016-12-30 | 2016-12-30 | Device for removing fine particulate matter of sintering flue gas by pulse corona charge |
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| CN109174456A (en) * | 2018-08-23 | 2019-01-11 | 北京工业大学 | It is a kind of for being atomized the device and method of wet static dedusting |
| CN113786935A (en) * | 2021-08-11 | 2021-12-14 | 中国矿业大学 | System for trapping and screening large amount of nanoscale particles and generating nanoscale particles |
| CN116213116A (en) * | 2022-09-05 | 2023-06-06 | 苏州科技大学 | Atomization corona oil smoke waste gas purification device and purification method |
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| CN113786935A (en) * | 2021-08-11 | 2021-12-14 | 中国矿业大学 | System for trapping and screening large amount of nanoscale particles and generating nanoscale particles |
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| CN116213116B (en) * | 2022-09-05 | 2023-09-19 | 苏州科技大学 | Atomization corona oil smoke waste gas purification device containing atomization corona rotating component and purification method |
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