CN106440840A - Selective emission reduction system and method for smoke PM10/2.5 in iron mine sintering process - Google Patents
Selective emission reduction system and method for smoke PM10/2.5 in iron mine sintering process Download PDFInfo
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- CN106440840A CN106440840A CN201611077976.4A CN201611077976A CN106440840A CN 106440840 A CN106440840 A CN 106440840A CN 201611077976 A CN201611077976 A CN 201611077976A CN 106440840 A CN106440840 A CN 106440840A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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Abstract
The invention discloses a selective emission reduction system and method for smoke PM10/2.5 in the iron mine sintering process and belongs to the field of iron mine sintering smoke pollution treatment. The selective emission reduction system comprises a front air bellow, a rear air bellow, an agglomerating and capturing device and a main flue. The front air bellow is directly connected with a smoke discharging chimney, and the rear air bellow is connected with the main flue through the agglomerating and capturing device. The agglomerating and capturing device comprises a particle agglomerating unit and a turning capturing unit. An agglomerating agent spray head is arranged in the particle agglomerating unit. A storage component is obliquely arranged in the turning capturing unit, and particular matter deposits in a turning elbow pipe and stored in the storage component. According to the selective emission reduction system and method, smoke in the rear air bellow of a sintering pallet is selectively introduced into the agglomerating and capturing device, and the agglomerating and capturing device agglomerates, captures and removes subparticles in the smoke; and by means of segment treatment for the smoke, the pertinence for emission reduction of the subpartciles in the smoke is improved, and therefore the treatment amount of the smoke is reduced, and the emission reduction cost of pollutants is reduced.
Description
Technical field
A kind of the present invention relates to agglomeration for iron mine gas pollution control field, more particularly, it relates to Ore Sintering Process cigarette
Gas PM10/2.5Selectivity emission-reducing system and method.
Background technology
Pellet refers to pass through the general name of the particulate matter of nose and mouth entrance human respiratory tract, uses PM10Represent (ring
Granule of the border in the air aerodynamic diameter less than 10 microns).PM2.5Finger ring border in the air equivalent aerodynamic diameter is little
In the particulate matter for being equal to 2.5 microns.It can be suspended in the air long period, its in atmosphere content concn higher, just represent
Air pollution is more serious.Although PM2.5The simply little component of content in earth atmosphere composition, but it to air quality and can see
Degree etc. has important impact.Compared with thicker Atmospheric particulates, PM10/2.5Particle diameter is little, and area is big, and activity is strong, is easily accompanied with
Poison, harmful substance (for example, heavy metal, microorganism etc.), and time of staying length in an atmosphere, fed distance are remote, thus to people
The impact of body health and atmosphere quality is bigger, and, it can enter human body alveolar or even blood circulation, directly lead
Cause the diseases such as cardiovascular diseasess.
Agglomeration for iron mine operation is requisite link in Production Processes In Steel Industry, while be steel and iron industry maximum again
PM10And PM2.5Emission source, accounts for 40% of its total release or so.Sintering plant mainly purifies sintering using electrostatic precipitator at present
Particulate matter in flue gas, cleaner unit is preferable to the coarseparticulate removal effect in flue gas, but fine less than 10 μm for particle diameter
Particulate matter (PM10And PM2.5), as its particle diameter is little, ratio resistance is high, charge capacity is poor.The fine particle is by general
Dust collection method is difficult to effectively remove, and is badly in need of developing a kind of emission-reducing system of sintering flue gas fine particulate matter and method, so as to
Fine particle in sintering flue gas is effectively treated and is reduced discharging.
Through retrieval, Chinese Patent Application No.：201620055887.9, authorized announcement date is on June 29th, 2016, invention wound
A kind of entitled flue gas dust collecting system is made, this application case discloses a kind of flue gas dust collecting system, the dust pelletizing system includes that gravity sinks
Drop room, inertia dust-removing device, cyclone dust collector and Wet type electric dust-removing device；Wherein inertia dust-removing device is arranged at gravitational settling
Smoke outlet that is indoor and being located at gravity settling chamber, the smoke outlet of gravity settling chamber is entered with the flue gas of cyclone dust collector
Mouth end is connected；Wet type electric dust-removing device is arranged at the smoke outlet of cyclone dust collector.This application case is with respect to existing
Wet type electric dust-removing device improves efficiency of dust collection to a certain extent, but which is disadvantageous in that using cleaner species relatively
Many, crushing is big, high energy consumption, and equipment investment cost is higher.
In addition, Chinese Patent Application No.：201610288719.9, the applying date is on April 28th, 2016, invention and created name
For a kind of agglomeration for iron mine flue gas PM10And PM2.5Discharge-reducing method, this application case discloses Ore Sintering Process fine particle
Emission-reducing system, in Ore Sintering Process, sprays into reunion liquid in the exhaust gases passes of sintering flue gas, sinters the subparticle in flue gas
Thing is reunited in the presence of reunion liquid and is grown up, and removes, using dust arrester, the fine particle grown up of reuniting, described reunion
Agent includes aluminium polychlorid, sodium carboxymethyl cellulose, polyacrylamide and solid additive.Subject application causes to be adsorbed with fine
The reunion liquid mist of particulate matter drops in nucleation under low voltage situations, collides, grows up, the bulky grain aggregate of formation, and is filled using dedusting
Put and remove the fine particle that grows up of reuniting.This application case proposes fine particle reunion in a kind of new agglomeration for iron mine flue gas and subtracts
The method of row, the agglomerating effect for improving fine particle in agglomeration for iron mine flue gas realizes the reduction of discharging of fine particle, but the Shen
The trapping that such as please will improve particulate matter after reuniting in case also needs to coordinate more efficient capturing device.
Content of the invention
1. invention technical problem to be solved
It is an object of the invention to overcoming in prior art, Ore Sintering Process fine particle is difficult to effectively trap and subtract
The problem of row, provides a kind of Ore Sintering Process flue gas PM10/2.5Selectivity emission-reducing system and method, a kind of iron mine therein
Sintering process flue gas PM10/2.5Selectivity emission-reducing system, by carrying out segment processing to flue gas, improve fine in flue gas
The specific aim that grain thing is reduced discharging, improves the arresting efficiency of flue gas particles；A kind of Ore Sintering Process flue gas PM therein10/2.5
Selectivity discharge-reducing method, by the method for flue gas segment processing, improve the removal efficiency of fine particle in flue gas.
2. technical scheme
For reaching above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of Ore Sintering Process flue gas PM of the present invention10/2.5Selectivity emission-reducing system, including anterior bellows, rear portion
Bellows, reunion capturing device and flue collector, described anterior bellows are directly connected with chimney, and described rear portion bellows are through group
Poly- capturing device is connected with flue collector.
Preferably, reunion capturing device includes：
Particle agglomeration unit, is provided with agglomerator shower nozzle in the particle agglomeration unit；
Turn back capture unit, the capture unit of turning back includes reservoir block, intake elbow and bend pipe of giving vent to anger, described air inlet
Bend pipe is connected with the bottom of bend pipe of giving vent to anger and constitutes bend pipe of turning back, and what described reservoir block was inclined is arranged at bend pipe of giving vent to anger
On, particulate matter is settled in bend pipe of turning back and is stored in reservoir block；
Described particle agglomeration unit is arranged at the top of capture unit of turning back, and the bottom of particle agglomeration unit is caught with turning back
The intake elbow of collection unit is connected.
Preferably, described rear portion bellows be pallet in the middle part of to pallet terminal position below corresponding wind
Case.
Preferably, between described rear portion bellows and reunion capturing device, cleaner unit is provided with.
Preferably, described particle agglomeration unit includes agglomerator shower nozzle, turbulence columns and particle agglomeration room, described reunion
Agent shower nozzle and turbulence columns are arranged at the inside of particle agglomeration room, and agglomerator shower nozzle is located at the top of turbulence columns.
Preferably, also include electrostatic precipitation unit, the electrostatic precipitation unit includes corona electrode, collection electrode and power supply section
Part, described corona electrode is arranged in particle agglomeration unit, and collection electrode is arranged at the giving vent to anger on bend pipe of capture unit of turning back,
Described corona electrode, collection electrode are connected with the negative and positive electrode of power supply part respectively.
Preferably, the injection direction of described agglomerator shower nozzle is contrary with the flow direction of flue gas；Described turbulence columns
Shape of cross section is isosceles triangle.
Preferably, the bottom of described particle agglomeration room is provided with Contraction Ducts, the cross-sectional area of the Contraction Ducts along
Vertically downward direction is gradually reduced, and particle agglomeration room is connected with intake elbow by Contraction Ducts.
A kind of Ore Sintering Process flue gas PM of the present invention10/2.5Selectivity discharge-reducing method, step is as follows：Select sintering
Chassis rear portion bellows, the flue gas in the bellows of rear portion is introduced reunion capturing device, and the fine particle in flue gas is in trapping of reuniting
Trapping is agglomerated in device, and then intensified pump supercharging introduces flue collector to flue gas again.
Preferably, the reunion trapping of reunion capturing device, rear portion are re-introduced into after the flue gas removing dust device dedusting in the bellows of rear portion
Bellows be pallet in the middle part of to pallet terminal position below corresponding bellows.
3. beneficial effect
The technical scheme for being provided using the present invention, compared with existing known technology, with following remarkable result：
(1) a kind of Ore Sintering Process flue gas PM of the present invention10/2.5Selectivity emission-reducing system, in reunion capturing device
In, the fine particle in flue gas first carries out reunion and grows up, then the reservoir block trapping for being inclined by arranging, and improves flue gas particle
The arresting efficiency of thing, being arranged at that reservoir block is inclined is given vent to anger on bend pipe, the bottom for being arranged at bend pipe of giving vent to anger that reservoir block is inclined
Portion, under the collective effect of the inertia force in gravity and granule motor process, granule is deposited in the bottom of bend pipe of turning back, and main
The bottom of bend pipe of giving vent to anger is gathered in, as the upper end open of reservoir block is 10-30 ° with the angle of horizontal plane, granule is going out
In the bottom infall process of gas bend pipe, can directly by reservoir block upper end open first motion to reservoir block, so as to
Promote particulate matter directly to be trapped by reservoir block, improve the removal efficiency of flue gas particles；
(2) a kind of Ore Sintering Process flue gas PM of the present invention10/2.5Selectivity emission-reducing system, reunion capturing device
The flue gas at intake elbow top is flowed into end and is connected with the flue on top by shaking corrugated tube, the flue gas at bend pipe top of giving vent to anger
Outflow end is connected with the flue on top by shaking corrugated tube, that is, bend pipe of turning back can make vertical direction with respect to flue
Vibrations, the fine particle during vibrations in flue gas is disturbed in bend pipe of turning back with flue gas simultaneously, so as to promote
Enter particulate matter to collide in bend pipe of turning back, and promoted fine particle to reunite to grow up, improve flue gas particles
Removal efficiency；
(3) a kind of Ore Sintering Process flue gas PM of the present invention10/2.5Selectivity emission-reducing system, agglomerator shower nozzle and disturb
Fluidization tower is arranged at the inside of particle agglomeration room, and agglomerator shower nozzle is located at the top of turbulence columns, the flowing side of injection direction and flue gas
To conversely, in flue gas the head on agglomerator droplet touch opportunity that sprays of fine particle and agglomerator shower nozzle increase, promote
The quick reunion of grain thing；
(4) a kind of Ore Sintering Process flue gas PM of the present invention10/2.5Selectivity emission-reducing system, corona electrode and power supply
The negative pole of part is connected, and collection electrode is connected with the positive pole of power supply part, and the particulate matter in flue gas is under particle agglomeration unit
Portion is then entered electrostatic precipitation unit by negative charge on load, locates, carry the granule of negative charge above reservoir block porch
Thing is trapped by collection electrode, and bend pipe of turning back can make the vibrations of vertical direction with respect to particle agglomeration unit, is shaken and is produced
The mutual collision of life, increases the contact probability of particulate matter and collection electrode, so as to promote particulate matter in reservoir block entrance
Place is trapped by collection electrode at top, and is deposited in reservoir block；
(5) a kind of Ore Sintering Process flue gas PM of the present invention10/2.5Selectivity discharge-reducing method, selectively will sintering
Flue gas in the bellows of chassis rear portion introduces reunion capturing device, and rear portion bellows are for pallet terminal position in the middle part of pallet
The corresponding bellows in place lower section, the subparticle in flue gas is reunited by reunion capturing device, trapping is removed, and the flue gas after purification is again
Pallet flue collector is introduced by pipeline, by segment processing being carried out to flue gas, improves what fine particle in flue gas was reduced discharging
Specific aim, so as to reduce the treating capacity of flue gas, reduces the reduction of discharging cost of pollutant.
Description of the drawings
Fig. 1 is a kind of Ore Sintering Process flue gas PM of the present invention10/2.5Selectivity emission-reducing system overall structure illustrate
Figure；
Fig. 2 is the overall structure diagram of the reunion capturing device of the present invention；
Fig. 3 is the structural representation of the reservoir block of the present invention.
Label declaration in schematic diagram：
100th, particle agglomeration unit；101st, agglomerator shower nozzle；102nd, turbulence columns；103rd, Contraction Ducts；104th, particle agglomeration
Room；105th, expansion line；
200th, turn back capture unit；201st, corrugated tube is shaken；202nd, electromagnetic shaker；210th, reservoir block；211st, dust flow-disturbing
Plate；212nd, waterfog head；213rd, dirt valve is unloaded；214th, dust corrugated tube；220th, intake elbow；221st, flue gas flows into end；230th, go out
Gas bend pipe；231st, flue gas outflow end；
300th, electrostatic precipitation unit；301st, corona electrode；302nd, collection electrode；303rd, power supply part；
410th, pallet；411st, anterior bellows；412nd, rear portion bellows；420th, cleaner unit；430th, chimney；440th, increase
Press pump；450th, flue collector.
Specific embodiment
Hereafter accompanying drawing with reference to the detailed description of the exemplary embodiment of the present invention, the accompanying drawing forms of description
Point, show the enforceable exemplary embodiment of the present invention in the figure as an example.Although these exemplary embodiment quilts
Fully describe in detail so that those skilled in the art can implement the present invention, it is to be understood that can achieve other embodiment and
Can to the present invention, various changes can be made without departing from the spirit and scope of the present invention.Hereafter to embodiments of the invention
More detailed description is not limited to required the scope of the present invention, and right just to being illustrated and not limiting
The description of the feature and feature of the present invention, to propose to execute the best mode of the present 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 combine accompanying drawing to more fully understand, wherein the present invention
Element and feature are identified by reference.
Embodiment 1
In conjunction with Fig. 1 and Fig. 2, a kind of Ore Sintering Process flue gas PM of the present embodiment10/2.5Selectivity emission-reducing system, bag
Include anterior bellows 411, rear portion bellows 412, reunion capturing device and flue collector 450, described anterior bellows 411 directly with smoke evacuation
Chimney 430 is connected, and described rear portion bellows 412 are connected with flue collector 450 through reunion capturing device, 450 end of flue collector and row
Cigarette chimney 430 is connected, and chimney 430 is used for for flue gas discharging (as shown in Figure 1).Reunion capturing device and flue collector 450 it
Between be provided with booster pump 440, the intensified pump 440 of flue gas is pressurized, so as to eliminate reunion capturing device to cigarette in rear portion bellows 412
The pressure drop of gas, so as to ensure that the air balance in sintering process.
Cleaner unit 420 is provided between rear portion bellows 412 and reunion capturing device, and cleaner unit 420 can first will be larger
Particulate matter is removed, and reunion capturing device can be exclusively used in the removal of the fine particle in flue gas, so as to improve fine particle
The specific aim of reduction of discharging, improves the emission reduction efficiency to fine particle, and rear portion bellows 412 are 410 middle part of pallet to sintering
Corresponding bellows below at 410 terminal position of chassis.Anterior bellows 411 are 410 front end of pallet to 410 middle part of pallet
Corresponding bellows below at position.
The reunion capturing device of the present embodiment includes particle agglomeration unit 100 and turn back capture unit 200, wherein cluster of grains
Agglomerator shower nozzle 101 is provided with poly- unit 100；Capture unit of turning back 200 is above-mentioned capture unit of turning back；Particle agglomeration list
The tops that unit 100 is arranged at capture unit 200 of turning back, the air inlet of the bottom of particle agglomeration unit 100 and capture unit 200 of turning back
Bend pipe 220 is connected, and particulate matter is reunited in particle agglomeration unit 100 and grown up, and capture unit 200 of being turned back is trapped, and is improve
The arresting efficiency of particulate matter in flue gas.
Particle agglomeration unit 100 is arranged at the top of capture unit 200 of turning back, the bottom of particle agglomeration unit 100 and folding
Turn capture unit 200 intake elbow 220 be connected, particle agglomeration unit 100 include agglomerator shower nozzle 101, turbulence columns 102 and
Grain reunion room 104, described agglomerator shower nozzle 101 and turbulence columns 102 are arranged at the inside of particle agglomeration room 104, and agglomerator sprays
101 tops for being located at turbulence columns 102, the flow direction of injection direction and flue gas is conversely, fine particle and reunion in flue gas
The agglomerator droplet touch opportunity that agent shower nozzle 101 head-on sprays increases, so as to improve agglomerating effect.
What deserves to be explained is the diameter with diameter greater than flue of particle agglomeration room 104, in 104 top of particle agglomeration room
Pipeline is provided with an expansion line 105, and flue is connected by expansion line 105 with particle agglomeration room 104, and flue gas is in extension
Preliminary turbulent flow is produced at pipeline 105, while reducing flue gas speed.Flue gas enters particle agglomeration room 104 by the flue on top
Afterwards, flue gas flow rate slows down so that fine particle contact with agglomerator droplet more abundant, be conducive to particulate matter in flue gas with
Agglomerator mixes；The shape of cross section of turbulence columns 102 is isosceles triangle, and triangle base is pushed up perpendicular to flow of flue gas direction
Angle pointing direction is relative with flow of flue gas direction, flue gas turbulization when turbulence columns 102, by rotation and mutually collision,
It is fully contacted between fine particle and agglomerator droplet and between other granules, strengthens agglomerating effect, promote fine
Particulate matter is reunited and is grown up, so as to increase particle size, beneficial to being trapped by ensuing capture unit 200 of turning back.
The bottom of particle agglomeration room 104 is provided with Contraction Ducts 103, and the cross-sectional area of the Contraction Ducts 103 is along vertical
Downwardly direction is gradually reduced, and particle agglomeration room 104 is connected with intake elbow 220 by Contraction Ducts 103, increases gas velocity
Rate so that flue gas is entered higher initial velocity in capture unit 200 of turning back, produces larger inertia force, is conducive to particulate matter
Turning back, capture unit 200 is settled.
The flue gas at 220 top of intake elbow flows into end 221 by shaking 103 phase of Contraction Ducts of corrugated tube 201 and top
Even, the flue gas outflow end 231 at 230 top of bend pipe of giving vent to anger is connected with the flue on top by shaking corrugated tube 201, that is, turn back
Bend pipe can make the vibrations of vertical direction with respect to particle agglomeration unit 100.
The present embodiment capture unit 200 of turning back includes reservoir block 210, intake elbow 220 and bend pipe 230 of giving vent to anger, described
Intake elbow 220 be connected with the bottom of bend pipe 230 of giving vent to anger and constitute bend pipe of turning back, described reservoir block 210 is inclined
It is arranged at and gives vent to anger on bend pipe 230, the bottom for being arranged at bend pipe 230 of giving vent to anger that reservoir block 210 is inclined, as shown in figure 1, reservoir portion
Part 210 is arranged at bend pipe bottom side to the right of turning back, and described reservoir block 210 is set to spheroidal so that fine particle one
Denier is just difficult to be flown out by reservoir block 210 after entering reservoir block 210, it is therefore prevented that the granule in reservoir block 210 occurs secondary
Airborne dust.
Particulate matter is settled in bend pipe of turning back and is stored in reservoir block 210, and reservoir block 210 and vertical direction
It is δ, δ=10-30 ° that inclination angle is the inclination angle of 10-30 °, the i.e. geometric center lines of reservoir block 210 and vertical direction, that is, store up
Integrate the upper end open of part 210 and the angle of horizontal plane as 10-30 °, preferably 20 ° of the present embodiment.When flue gas and particulate matter are in folding
During bending pipe motion, particulate matter is under the collective effect of gravity and inertia force, and the particulate matter in flue gas can be deposited in bend pipe of turning back,
And the bottom of bend pipe 230 of giving vent to anger mainly is gathered in, as the upper end open of reservoir block 210 is 10- with the angle of horizontal plane
30 °, granule, can be directly by the upper end open first motion of reservoir block 210 in the bottom infall process for giving vent to anger bend pipe 230
To reservoir block 210.
It is worth further illustrating, the position of bend pipe radius of curvature of turning back minimum is located at the bottommost of bend pipe of turning back, and
The reservoir block 210 of the present invention is not arranged at the position of bend pipe radius of curvature minimum of turning back, but being arranged at for inclining is given vent to anger
On bend pipe 230, the position is not the position of radius of curvature minimum, and reservoir block 210 is obliquely installed, and has broken the formula of turning back and has gathered dust
Device capturing device is arranged on turn back bend pipe curvature minimum at or vertical lowest point inertial thinking, on the contrary particulate matter is had
Preferably trap and trapping effect.Its reason is probably, on the basis of the original initial velocity of the granule in flue gas, in gravity and granule
Under the collective effect of the inertia force in motor process, it is more easy to be gathered near the bottom of bend pipe 230 of giving vent to anger, the setting causes granule
Thing is easier to settle in bend pipe of turning back and be stored in reservoir block 210.
Above-mentioned 210 porch of reservoir block is additionally provided with waterfog head 212, and particulate matter is being stored up after water smoke moistening
Secondary agglomeration is carried out in collection part 210 so that fine particle carries out reunion and grows up, increases weight, it is to avoid be deposited in reservoir portion
The particulate matter of 210 bottom of part is flown into again gives vent to anger in bend pipe 230.And, it is provided with 210 bottom of reservoir block and dirt valve 213 is unloaded,
After a part of particle thing has been preserved in reservoir block 210, can open and unload dirt valve 213, will accumulate in reservoir block 210
Grain thing is discharged.
Above-mentioned intake elbow 220 is connected with flue by shaking corrugated tube 201 with bend pipe 230 of giving vent to anger, i.e. air inlet
The flue gas at 220 top of bend pipe is flowed into end 221 and is connected with the flue on top by shaking corrugated tube 201, and bend pipe 230 of giving vent to anger is pushed up
The flue gas outflow end 231 in portion is connected with the flue on top by shaking corrugated tube 201, that is, bend pipe of turning back can be with respect to flue gas
The vibrations of vertical direction made by pipeline, and the fine particle during vibrations in flue gas is while send out in bend pipe of turning back with flue gas
Raw disturbance, collides in bend pipe of turning back so as to promote particulate matter, and promotes fine particle to occur reunion to grow up, this
Rolled over bending pipe increases the complexity that granule is moved in bend pipe of turning back during vibrations simultaneously, promotes particulate matter more
Easily enter among reservoir block 210.Electromagnetic shaker 202 is provided with capture unit of turning back 200, and electromagnetic shaker 202 can promote to roll over
Bending pipe shakes.
A kind of Ore Sintering Process flue gas PM of the present embodiment10/2.5Selectivity discharge-reducing method, step is as follows：Select to burn
Flue gas removing dust device 420 in rear portion bellows 412 is first carried out thick dedusting by knot 410 rear portion bellows 412 of chassis, and cleaner unit 420 can
First to remove larger particulate matter, reunion capturing device can be exclusively used in the removal of the fine particle in flue gas, so as to improve
The specific aim that fine particle is reduced discharging.Flue gas in rear portion bellows 412 is introduced reunion capturing device, fine in flue gas
Grain thing is agglomerated trapping in reunion capturing device, sprays into agglomerator, fine particle in reunion capturing device in flue gas
It is sufficiently mixed with agglomerator, agglomerator droplet is sufficiently mixed with flue gas and reunites grows up, in reunion capturing device by flue gas
Subparticle is reunited, trapping is removed, and the flue gas after purification is introduced the flue collector 450 of pallet 410 again by pipeline；Wherein reunite
Capturing device is as follows to the reunion capture method of fine particle：
Step one, fine particle are reunited
Flue gas enter reunion capturing device, in reunion capturing device in flue gas spray into agglomerator, fine particle with
Agglomerator is sufficiently mixed, and agglomerator droplet is sufficiently mixed with flue gas and reunites grows up；Describe in detail as follows：
A, flue gas enter particle agglomeration room 104, spray into agglomerator droplet at the top of particle agglomeration room 104 in flue gas,
And the flow direction of the injection direction of agglomerator droplet and flue gas is conversely, flue gas is under the effect of 102 flow-disturbing of turbulence columns, subparticle
There is the motion of irregular direction in thing, the particulate matter in agglomerator droplet and flue gas is sufficiently mixed and reunites grows up；
After B, particulate matter reunion are grown up, corona electrode 301 carries out corona discharge to particulate matter, makes electricity in particulate matter upper band
Lotus, and corona electrode 301 is connected with the negative pole of power supply part 303, so that negative charge on particulate matter band.
Step 2, trap particulate matter
Fine particle reunite grow up after enter the turning back in bend pipe of reunion capturing device, in the steering of bend pipe bottom of turning back
Position flue gas change gas flow rapidly so that the particulate matter in flue gas is separated with flue gas, what bend pipe of turning back was inclined is provided with
Reservoir block 210, particulate matter is trapped and stored by reservoir block 210.Describe in detail as follows：
Particulate matter in A, flue gas grows up through reuniting, enters capture unit 200 of turning back after corona discharge, and particulate matter is with flue gas
Move along in bend pipe of turning back, particulate matter is settled under the collective effect of gravity and Particle Inertia power, is captured under bend pipe of turning back
In the reservoir block 210 in portion；
B, power supply part 303 are powered for collection electrode 302 so that collection electrode 302 carries the different electric charge of upper and particulate matter,
The granule not settled is trapped by collection electrode 302, is stored in reservoir block 210 after vibrations；Wherein collection electrode 302 and power supply
The positive pole of part 303 is connected, and is adsorbed by collection electrode 302 by the particulate matter of negative electricity on 301 load of corona electrode, in vibrations
During the particulate matter that adsorbs in collection electrode 302 fall in reservoir block 210, and trapped by reservoir block 210.
Then the supercharging of intensified pump 440 introduces flue collector 450 to flue gas again, and the intensified supercharging of pump 440 of flue gas eliminates reunion
Pressure drop of the capturing device to flue gas in rear portion bellows 412, so as to ensure that the air balance in sintering process.Rear portion bellows
The reunion trapping of reunion capturing device is re-introduced into after 420 dedusting of flue gas removing dust device in 412, and rear portion bellows 412 are pallet
410 middle part to 410 terminal position of pallet below corresponding bellows.By segment processing being carried out to flue gas, improve cigarette
The specific aim that in gas, fine particle is reduced discharging, so as to reduce the treating capacity of flue gas, reduces the reduction of discharging cost of pollutant.
Embodiment 2
The substance of the present embodiment is with embodiment 1, and difference is：Also include electrostatic precipitation unit 300, electrostatic is removed
Dirt unit 300 includes corona electrode 301, collection electrode 302 and power supply part 303, and described corona electrode 301 is arranged at granule
The bottom of agglomeration unit 100, in sintering flue gas, fine particle speed after 102 flow-disturbing of turbulence columns is reunited reduces, therefore warp
Cross corona electrode 301 to take longer for, charged more abundant, and also subparticle is in 104 top of particle agglomeration room reunion length
Greatly so that reuniting the granule that grows up can be preferably charged by corona electrode 301；Collection electrode 302 is arranged at reservoir block 210 and enters
Top at mouthful, the particulate matter that collection electrode 302 is trapped is fallen in reservoir block 210.Corona electrode 301 in the present embodiment, gather dust
Electrode 302 is connected with the negative and positive electrode of power supply part 303 respectively, i.e., corona electrode 301 is connected with the negative pole of power supply part 303,
Collection electrode 302 is connected with the positive pole of power supply part 303.
In the case that corona electrode 301 discharges, the particulate matter in flue gas is in the bottom of particle agglomeration unit 100 by load
Negative charge, then enters electrostatic precipitation unit 300, locates, carry the particulate matter quilt of negative charge above 210 porch of reservoir block
Collection electrode 302 is trapped, and bend pipe of turning back can make the vibrations of vertical direction with respect to particle agglomeration unit 100, vibrations and
Mutual collision is produced, increases the contact probability of particulate matter and collection electrode 302.So as to promote particulate matter in reservoir block
210 places above porch are trapped by collection electrode 302, and the particulate matter of collection electrode 302 is deposited in storage during vibrations
In collection part 210.
Embodiment 3
The substance of the present embodiment is with embodiment 1, and difference is：The turning back in capture unit 200 of the present embodiment
Electromagnetic shaker 202 is provided with, capture unit of entirely turning back 200 can all produce vibrations, particulate matter reaches 210 top receipts of reservoir block
Before dirt electrode 302, vibrations and produce mutual collision, be more easy to be trapped by collection electrode 302, reach after collection electrode 302 because
Increase particulate matter and 302 contact probability of collection electrode for vibrations, collection electrode 302 is ejected in the particulate matter vibrations after neutralization, and is fallen
Enter in reservoir block 210, trap more particulate matters.Intake elbow 220 and bend pipe 230 of giving vent to anger are by shaking corrugated tube
201 are connected with flue, and capture unit of turning back 200 is during vibrations, and the particle agglomeration unit 100 on top can't be sent out
Raw vibrations, reducing during capture unit 200 of turning back is trapped affects for 100 aggregation procedure of particle agglomeration unit.
Embodiment 4
As shown in figure 3, the substance of the present embodiment is with embodiment 1, difference is：Reservoir block 210 is by collection
Dirt corrugated tube 214 is connected with bend pipe of turning back, it is to avoid bend pipe of turning back vibrations cause 210 airborne dust of reservoir block；Enter in reservoir block 210
Dust spoiler 211 is additionally provided with mouthful, its effect is to reduce the speed after particulate matter enters reservoir block 210, coordinates water smoke
Shower nozzle 212, makes particulate matter better through water smoke secondary agglomeration, it is to avoid 210 endoparticle thing of reservoir block is raised out.
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 illustrative and not restrictive, if there is any such modification and modification, then they all incite somebody to action
Fall in the scope of the present invention described here.Additionally, background technology is intended to Development Status and meaning in order to this technology is described,
It is not intended to limit the application of the present invention or the application and the present invention.
More specifically, although here has been described with the exemplary embodiment of the present invention, but 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 modified, omit,
Any and whole embodiments of (for example between each embodiment) combination, adaptive change and/or replacement.In claim
Limit can be according to used in claim language and widely explained, and be not limited in foregoing detailed description or in reality
The example for describing 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 ".Where method or process claims in office
In any step for the enumerating order that can execute in any order and be not limited to propose in claim.Therefore, the present invention
Scope only should be determined by claims and its legal equivalents, rather than by descriptions and examples given above come
Determine.
Claims (10)
1. a kind of Ore Sintering Process flue gas PM10/2.5Selectivity emission-reducing system, it is characterised in that：Including anterior bellows
(411), rear portion bellows (412), reunion capturing device and flue collector (450), described anterior bellows (411) directly with smoke evacuation cigarette
Chimney (430) is connected, and described rear portion bellows (412) are connected with flue collector (450) through reunion capturing device.
2. a kind of Ore Sintering Process flue gas PM according to claim 110/2.5Selectivity emission-reducing system, its feature exists
In：Reunion capturing device includes：
Particle agglomeration unit (100), is provided with agglomerator shower nozzle (101) in the particle agglomeration unit (100)；
Capture unit of turning back (200), the capture unit of turning back (200) includes reservoir block (210), intake elbow (220) and goes out
Gas bend pipe (230), described intake elbow (220) is connected and constitutes bend pipe of turning back with the bottom of bend pipe of giving vent to anger (230), described
Being arranged on bend pipe of giving vent to anger (230) of inclining of reservoir block (210), particulate matter is settled in bend pipe of turning back and is stored in and preserves
In part (210)；
Described particle agglomeration unit (100) is arranged at the top of capture unit of turning back (200), particle agglomeration unit (100)
Bottom is connected with the intake elbow (220) of capture unit of turning back (200).
3. a kind of Ore Sintering Process flue gas PM described in 2 is wanted according to right10/2.5Selectivity emission-reducing system, it is characterised in that：
Described rear portion bellows (412) be pallet (410) in the middle part of to pallet (410) terminal position below corresponding wind
Case.
4. a kind of Ore Sintering Process flue gas PM described in 3 is wanted according to right10/2.5Selectivity emission-reducing system, it is characterised in that：
Cleaner unit (420) is provided between described rear portion bellows (412) and reunion capturing device.
5. a kind of Ore Sintering Process flue gas PM according to right wants any one of 2-410/2.5Selectivity emission-reducing system, its
It is characterised by：Described particle agglomeration unit (100) includes agglomerator shower nozzle (101), turbulence columns (102) and particle agglomeration room
(104), described agglomerator shower nozzle (101) and turbulence columns (102) are arranged at the inside of particle agglomeration room (104), and agglomerator
Shower nozzle (101) is located at the top of turbulence columns (102).
6. a kind of Ore Sintering Process flue gas PM according to claim 510/2.5Selectivity emission-reducing system, its feature exists
In：Also include electrostatic precipitation unit (300), the electrostatic precipitation unit (300) includes corona electrode (301), collection electrode (302)
With power supply part (303), described corona electrode (301) is arranged in particle agglomeration unit (100), and collection electrode (302) sets
It is placed on the bend pipe of giving vent to anger (230) of capture unit of turning back (200), described corona electrode (301), collection electrode (302) are distinguished
It is connected with the negative and positive electrode of power supply part (303).
7. a kind of Ore Sintering Process flue gas PM according to claim 610/2.5Selectivity emission-reducing system, its feature exists
In：The injection direction of described agglomerator shower nozzle (101) is contrary with the flow direction of flue gas；The horizontal stroke of described turbulence columns (102)
Cross sectional shape is isosceles triangle.
8. a kind of Ore Sintering Process flue gas PM according to claim 710/2.5Selectivity emission-reducing system, its feature exists
In：The bottom of described particle agglomeration room (104) is provided with Contraction Ducts (103), the cross-sectional area edge of the Contraction Ducts (103)
Vertically downward direction to be gradually reduced, particle agglomeration room (104) are connected with intake elbow (220) by Contraction Ducts (103).
9. a kind of Ore Sintering Process flue gas PM10/2.5Selectivity discharge-reducing method, it is characterised in that step is as follows：Select sintering
Chassis (410) rear portion bellows (412), the flue gas in rear portion bellows (412) is introduced reunion capturing device, fine in flue gas
Grain thing is agglomerated trapping in reunion capturing device, and then intensified pump (440) supercharging introduces flue collector (450) to flue gas again.
10. a kind of Ore Sintering Process flue gas PM according to claim 910/2.5Selectivity discharge-reducing method, its feature exists
In, the reunion of reunion capturing device is re-introduced into after flue gas removing dust device (420) dedusting in rear portion bellows (412) to be trapped, rear portion wind
Case (412) be pallet (410) in the middle part of to pallet (410) terminal position below corresponding bellows.
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