CN106621661A - Process method and device for ultra-clean discharge treatment of dust-containing steam in steel slag rolling region - Google Patents
Process method and device for ultra-clean discharge treatment of dust-containing steam in steel slag rolling region Download PDFInfo
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- CN106621661A CN106621661A CN201611122717.9A CN201611122717A CN106621661A CN 106621661 A CN106621661 A CN 106621661A CN 201611122717 A CN201611122717 A CN 201611122717A CN 106621661 A CN106621661 A CN 106621661A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
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Abstract
The invention relates to a process method and a device for ultra-clean discharge treatment of dust-containing steam in a steel slag rolling region. The device comprises a washing tower (1), a cyclone tower (2), a static dedustor (3), an induced draft fan (4) and a middle connecting pipeline and a chimney thereof. The system path of the process method is as follows: dust-containing steam (5) in a steel slag treatment rolling region enters the washing tower (1) and the cyclone tower (2) successively through a dust collecting hood for spraying and cyclone separating treatment, and enters through a gas uniform distributing device (9) at the inlet of the static dedustor (3), so that the dust-containing steam uniformly enters an inner electric field region of the static dedustor (3), and a spraying device (10) which is arranged at the inlet sprays online. The dust-containing steam treated by the static dedustor (3) enters the chimney along the pipeline through the induced draft fan to be discharged. Meanwhile, a washing device is arranged at an outlet of the static dedustor (3) so as to wash the inner electric field region in production intermittence. The dedusting efficiency is improved, so that the dust-containing concentration of flue gas at the outlet of the dedusting system reaches an ultra-clean discharge standard.
Description
Technical field
The present invention relates to a kind of process and device that ultra-clean emission treatment is carried out to slag rolling area dust-laden steam, this
Invention carries out continuous processing using spraying and dedusting, cyclonic separation, three kinds of methods of electrostatic precipitation to dust-laden steam, realizes dust-laden steam
Ultra-clean discharge, discharge dust contained flue gas concentration as little as 5mg/Nm3。
Background technology
As Environmental protects desired further raising, existing iron and steel enterprise's slag processing area dust-laden Steam Dust
Handling process cannot meet drug in some provinces key area environmental protection especially discharge standard, the ultra-clean discharge skill of slag processing area dust-laden steam
The research and development of art become particularly urgent.Slag processing area dust-laden steam has that steam is large-minded, temperature is high, and gas componant is multiple
Miscellaneous, dust concentration is high, and dust size is little, dedusting difficulty is big, easy fouling the features such as.If the region dust-laden steam cannot be obtained well
Administer, excessive steam can be formed to surrounding environment and polluted, while it is huge to slag processing factory roof and building structure generation
Big erosion, even results in steel-structure factory building and caves in.After dust removal process, the dust of collection can reclaim return slag to flue gas
Line is processed, environment had both been protected, while it also avoid energy waste.At present, the domestic dedusting method for this region is fewer,
Process emission effect before this is 100mg/Nm3Below, it is impossible to reach ultra-clean discharge index.
The content of the invention
It is an object of the invention to provide a kind of new technology that ultra-clean dust removal process is carried out to slag processing area dust-laden steam, this
Plant new technology compared with prior art, equipment efficiency of dust collection is high, can reach the ultra-clean discharge in the region.
The present invention relates to a kind of carry out the device that dust removal process reaches ultra-clean discharge to slag processing rolling area dust-laden steam,
It include scrubbing tower (1), eddy flow tower (2), electrostatic precipitator (3), the first pipeline, second pipe, the 3rd pipeline, the 4th pipeline with
And air-introduced machine；The bottom of scrubbing tower (1) is provided with the first opening, and the first opening is connected by the first pipeline with rolling area space,
Dust-laden steam (5) for rolling area to be produced introduces scrubbing tower (1) and carries out spray process, connection scrubbing tower (1) and eddy flow tower
(2) second pipe is arranged on the top of scrubbing tower (1) and eddy flow tower (2), for the dust-laden steam after scrubbing tower (1) is processed
Being incorporated in eddy flow tower (2) carries out cyclonic separation process, and the bottom of eddy flow tower (2) is provided with the second opening, and the second opening passes through
3rd pipeline is connected with the bottom opening of electrostatic precipitator (3), for the steam after eddy flow tower (2) process to be introduced into electrostatic precipitation
Device (3), electrostatic precipitator is connected by the 4th pipeline with air-introduced machine (4), and the gas after electrostatic precipitator (3) process is via air inducing
Machine is discharged.
Wherein, the top of scrubbing tower (1) arranges the first high-pressure spray gun (6), and the first high-pressure spray gun (6) is provided with multilayer, excellent
Elect 2-8 layers as, be arranged in order downwards from the top of scrubbing tower (1)；The pressure of supply water of the first high-pressure spray gun is 0.5-2MPa, preferably
For 1.0MPa, the drop particle diameter of ejection is controlled within 200 microns, preferably 50-200 microns.
Wherein, the second high-pressure spray gun (7) is set on the top of eddy flow tower (2), the second high-pressure spray gun (7) arranges at least one
Layer,
Preferably 1-3 layers；The pressure of supply water of the second high-pressure spray gun (7) be 0.5-2MPa, preferably 1.0MPa, the water of ejection
Drop size controlling within 200 microns, preferably 30-150 microns.It is preferred that, eddy flow tower (2) top arranges rotating flow cone (8), and it sets
Put the bottom in the second high-pressure spray gun (7), rotating flow cone (8) arranges at least one of which, preferably 1-3 layers, and each layer rotating flow cone (8) from
Mental and physical efforts are different, the grit of correspondence trapping different-grain diameter.
Wherein, electrostatic precipitator (3) includes even gas distribution device (9), electric field component, the 3rd high-pressure spray gun (10) and
Four high-pressure spray guns (11), the entrance of electrostatic precipitator (3) arranges one layer of even gas distribution device (9), and even gas distribution device (9) is located at
Electric field component bottom so that dust-laden steam is even into electrostatic precipitator (3) internal electric field.It is preferred that, the 3rd high-pressure spray gun (10)
It is arranged near even gas distribution device (9), is preferably placed at the bottom of even gas distribution device (9) and positioned at electrostatic precipitator (3)
Bottom opening top, the 3rd high-pressure spray gun (10) arranges at least one of which, preferably 1-3 layers；The confession of the 3rd high-pressure spray gun (10)
Water pressure is 0.5-2MPa, preferably 1.0MPa, and the drop particle diameter of ejection is controlled within 200 microns, and preferably 30-150 is micro-
Rice.It is preferred that, the 4th high-pressure spray gun (11) is arranged on the top of electric field component, and the 4th high-pressure spray gun (11) arranges at least one of which, excellent
Elect 1-3 layers as；The pressure of supply water of the 4th high-pressure spray gun (11) be 0.3-1MPa, preferably 0.5MPa, the drop particle diameter control of ejection
System is within 200 microns.It is preferred that, the cathode line of electric field component adopts rigid bur line, and the positive plate of electric field component is using board-like
Or honeycomb fashion pole plate, high voltage power supply by cathode line discharge, form electric field, high voltage power supply between board-like or cellular positive plate
Using three-phase or composite pulse constant-current supply.It is preferred that, the outlet of electrostatic precipitator (3) is provided with explosion venting valve, and its quantity is at least
One, preferably 1-3.It is preferred that, deduster bottom arranges sewage bucket, and the sewage to flowing out on the pole plate is collected and outer
Discharge into and used into sewage disposal system precipitation process Posterior circle.
Comprise the following steps in the handling process of the present invention：Spraying and dedusting-cyclonic separation-electrostatic precipitation；
Spraying and dedusting process is：When 120 DEG C or so of the generation of slag processing area of dust-laden steam enter dust pelletizing system equipment,
Multi-layer high-voltage spray gun is internally provided with cleaner, the water droplet that it is ejected mutually is touched with the grit of larger granularity in flue gas
Hit, formation dust-laden drop agglomerated together.Under gravity or centrifugal action, dust-containing liquid drips or sticks on equipment inner wall
Swept away by water, after falling into device bottom, Jing sewage draining exits are expelled to sewage disposal system precipitation process Posterior circle and use.
Cyclonic separation process is：Afterflow is relayed through the flue gas of spray dust collector tangentially into rotational flow dust-removing equipment
It is dynamic.Rotational flow dust-removing its upper side is provided with high-pressure spray gun, the water droplet that it is ejected mutually is touched with the grit of small grain size in flue gas
Hit, formation dust-laden drop agglomerated together.Multi-layer rotational flow cone is set at the middle part of rotational flow dust-removing equipment so that dust-laden steam is more
Under strong centrifugal action, dust-containing liquid drips or sticks to and swept away by water on equipment inner wall, after falling into device bottom, Jing sewage draining exits
It is expelled to sewage disposal system precipitation process Posterior circle to use.
Electrostatic precipitation process is：After the fume treatment of two steps of premenstrual sequence, dust contained flue gas concentration is reduced to 100mg/Nm3
Hereinafter, flue gas is entered in electrostatic precipitator via connecting pipe, the airflow uniform distribution device arranged by deduster top so that
Flue gas is even in deduster electric field.Spray gun is respectively provided with above air inlet and electric field so that atomized drop steams with dust-laden
The grit of the hydrophilic fine particle size in part mutually condenses in vapour, and it is easier to charged.Meanwhile, atomized water forms one in anode plate surface
Layer moisture film.Additionally, the grit of fine particle size partly not hydrophilic in dust-laden steam, directly straight with a large amount of electronics of cathode line release
Binding close, it is charged.High voltage power supply is discharged by cathode line, electric field is formed between board-like or cellular positive plate, in electric field force
In the presence of, charged grit and dust-laden drop face south pole plate direction motion, trapped by the moisture film of anode plate surface, reach essence
The purpose of dedusting.Moisture film is dirty and flushing water in the presence of, the grit being enriched on pole plate is pulled away, so that it is guaranteed that pole plate
The cleaning of the limit, deduster bottom arranges sewage bucket, and the sewage to flowing out on pole plate is collected and discharges into outward into sewage disposal
System precipitation process Posterior circle is used.Flue gas after process enters air-introduced machine by electrostatic precipitator outlet, subsequent discharges into chimney, enters
Enter air.
Entered by the even gas distribution device (9) of electrostatic precipitator (3) entrance so that dust-laden steam is removed even into electrostatic
Dirt device (3) internal electric field region, while be arranged on the spray equipment (10) of entrance will be sprayed online.Meanwhile, electrostatic precipitation
Device (3) exit arranges flusher, and internal electric field region is rinsed when rolling area produces interval.High temperature dust steam
Dust removal process is carried out by spraying and dedusting, cyclonic separation, three kinds of methods of electrostatic precipitation, so as to reach ultra-clean emission effect.High temperature
Dust-laden steam carries out dust removal process, air inducing through scrubbing tower (1), eddy flow tower (2), the common 3-stage dust-removal device of electrostatic precipitator (3)
The gas being disposed is entered air by machine (4) as power source by chimney.
During spraying and dedusting, multi-layer high-voltage spray gun (pressure of supply water：The drop particle diameter for 1.0MPa) spraying is little and uniform,
Control is within 200 microns.In order to ensure that water droplet and flue gas have in a device sufficient incorporation time, the flue gas flow rate of design is only
For 3～5 meter per seconds, the coarse granule almost all in flue gas is removed by spraying and dedusting, while spray dust collector path space
Greatly, dust stratification is not easy to, reduces the maintenance of equipment.
High-pressure spray gun (the pressure of supply water that cyclonic separation process is adopted：1.0MPa) drop particle diameter for spraying is controlled 200
Within micron, further the fine grained in dust-laden steam is trapped, by the setting of rotating flow cone, rationally improve device interior
Centrifugal force, enables to be removed by the fine grained that droplet is trapped.
Electrostatic precipitation process is using online spraying and rinses two ways spray offline, is needed to be selected according to operating mode.
The water droplets size controlling of ejection is within 100 microns.Using honeycomb fashion or board-like electric field component, pole plate is adopted for deduster inside
With electroconductive frp or steel alloy material, polar curve using good rigidity prickle wire.Deduster adapted high voltage power supply using three-phase or
Composite pulse constant-current supply, reaches energy-efficient purpose.Due to being possible to produce a small amount of hydrogen and one during slag processing
Carbonoxide, electrostatic precipitator is possible to produce electric spark when discharging, and explosion venting valve is provided with electrostatic precipitator, while by control
Technology of Steel Slag Processing processed avoids combustible gas explosion limit, reaches the purpose of safety in production.
Electrostatic precipitator has that efficiency of dust collection is high, do not have high specific resistance inverse corona, stable, equipment resistance loss it is little,
The features such as operation energy consumption is low, Operation and Maintenance is simple.Jing after electrostatic precipitator process, exiting flue gas dust content as little as 5mg/
Nm3。
It is only 4000 handkerchiefs or so using the dust pelletizing system equipment resistance loss of the principle of the invention, cleaner is solved substantially
The problem of blocking, improves efficiency of dust collection, realizes the ultra-clean discharge of slag processing area dust-laden steam, meets drug in some provinces emphasis
The discharge environmental protection standard in region.
Description of the drawings
Fig. 1 shows the device that ultra-clean dust removal process is carried out to slag processing area dust-laden steam of the present invention.
Specific embodiment
As shown in figure 1, a kind of carry out the device that dust removal process reaches ultra-clean discharge to slag processing rolling area dust-laden steam,
It includes scrubbing tower 1, eddy flow tower 2, electrostatic precipitator 3, the first pipeline, second pipe, the 3rd pipeline, the 4th pipeline and air inducing
Machine 4；The bottom of scrubbing tower 1 is provided with the first opening, and the first opening is connected by the first pipeline with rolling area space, for by roller
Rolling the introducing scrubbing tower 1 of dust-laden steam 5 of area's generation carries out spray process, and the second pipe for connecting scrubbing tower 1 and eddy flow tower 2 is arranged
At scrubbing tower 1 and the top of eddy flow tower 2, being incorporated in eddy flow tower 2 for the dust-laden steam after scrubbing tower 1 is processed carries out eddy flow
Separating treatment, the bottom of eddy flow tower 2 is provided with the second opening, and the second opening is by the 3rd pipeline and the bottom of electrostatic precipitator (3)
Portion's opening connection, for the steam after eddy flow tower 2 is processed electrostatic precipitator 3 is introduced, and electrostatic precipitator top is by the 4th pipe
Road is connected with air-introduced machine 4, and the gas after the process of electrostatic precipitator 3 is discharged via air-introduced machine into chimney.Gas is removed by electrostatic
The even gas distribution device 9 of the entrance of dirt device 3 is entered so that dust-laden steam even into the internal electric field region of electrostatic precipitator 3, while
Being arranged on the spray equipment 10 of entrance will be sprayed online.Meanwhile, the exit of electrostatic precipitator 3 arranges flusher 11,
Internal electric field region is rinsed during rolling area production interval.Through the dust-laden steam of the electrostatic precipitation processes of electrostatic precipitator 3
Discharge into chimney via air-introduced machine along pipeline.
Wherein, the top of scrubbing tower 1 arranges the first high-pressure spray gun 6, and the first high-pressure spray gun 6 is provided with multilayer, preferably 2-8
Layer, is arranged in order downwards from the top of scrubbing tower 1；The pressure of supply water of the first high-pressure spray gun be 0.5-2MPa, preferably 1.0MPa,
The drop particle diameter of ejection is controlled within 200 microns, preferably 50-200 microns.
Wherein, second high-pressure spray gun 7 is set on the top of eddy flow tower 2, the second high-pressure spray gun 7 arranges at least one of which, preferably
For 1-3 layers；The pressure of supply water of the second high-pressure spray gun 7 is 0.5-2MPa, and preferably 1.0MPa, the drop particle diameter control of ejection exists
Within 200 microns, preferably 30-150 microns.It is preferred that, the top of eddy flow tower 2 arranges rotating flow cone 8, and it is arranged on the second high-pressure spray gun
7 bottom, rotating flow cone 8 arranges at least one of which, and preferably 1-3 layers, and each centrifugal force of layer rotating flow cone 8 are different, and correspondence trapping is different
The grit of particle diameter.
Wherein, electrostatic precipitator 3 includes even gas distribution device 9, electric field component, the 3rd high-pressure spray gun 10 and the 4th high pressure
Spray gun 11, the entrance of electrostatic precipitator 3 arranges one layer of even gas distribution device 9, and even gas distribution device 9 is located at electric field component bottom,
So that dust-laden steam is even into the internal electric field of electrostatic precipitator 3.It is preferred that, the 3rd high-pressure spray gun 10 is arranged on even gas distribution device
Near 9, the bottom of even gas distribution device 9 is preferably placed at and positioned at the bottom opening top of electrostatic precipitator 3, the 3rd high pressure spray
Rifle 10 arranges at least one of which, preferably 1-3 layers；The pressure of supply water of the 3rd high-pressure spray gun 10 be 0.5-2MPa, preferably 1.0MPa,
The drop particle diameter of ejection is controlled within 200 microns, preferably 30-150 microns.It is preferred that, the 4th high-pressure spray gun 11 is arranged on electricity
The top of field assembly, the 4th high-pressure spray gun 11 arranges at least one of which, preferably 1-3 layers；The pressure of supply water of the 4th high-pressure spray gun 11
For 0.3-1MPa, preferably 0.5MPa, the drop particle diameter control of ejection is within 200 microns.It is preferred that, the cathode line of electric field component
Using rigid bur line, the positive plate of electric field component adopts board-like or honeycomb fashion pole plate, high voltage power supply to discharge by cathode line, with
Electric field is formed between board-like or cellular positive plate, high voltage power supply is using three-phase or composite pulse constant-current supply.It is preferred that, electrostatic is removed
The outlet of dirt device 3 is provided with explosion venting valve, and its quantity is at least one, and preferably 1-3 is individual.It is preferred that, deduster bottom arranges sewage
Bucket, the sewage to flowing out on the pole plate is collected and discharges into outward and uses into sewage disposal system precipitation process Posterior circle.
It is a kind of that the technique side that dust removal process reaches ultra-clean discharge is carried out to slag processing rolling area dust-laden steam shown in Fig. 1
Method, it is comprised the following steps：
(1) spraying and dedusting step：When the dust-laden steam 5 that rolling area produces introduces the bottom of scrubbing tower 1 through the first pipeline,
First high-pressure spray gun 6 is set on the top of scrubbing tower 1, the water droplet that it is ejected mutually is touched with the grit of larger granularity in dust-laden steam
Hit, formation dust-laden drop agglomerated together, under gravity, dust-containing liquid drips or sticks to and rushed by water on washing inner wall of tower
Under, after falling into the bottom of scrubbing tower 1, the sewage draining exits of Jing first are discharged；Use into sewage disposal system precipitation process Posterior circle；
(2) cyclonic separation process steps：Dust-laden steam after the process of scrubbing tower 1 enters into eddy flow through second pipe
The relaying afterflow of tower 2 is moved, and the top of eddy flow tower 2 is provided with the second high-pressure spray gun 7, and the water droplet that it is ejected is less with dust-laden steam
The grit of granularity is mutually collided, formation dust-laden drop agglomerated together, arranges rotating flow cone 8 on the top of eddy flow tower 2 so that dust-laden
Under centrifugal force and Action of Gravity Field, dust-containing liquid drips or sticks to and swept away by water on the inwall of eddy flow tower 2 drop, falls into eddy flow tower
Behind 2 bottoms, the sewage draining exits of Jing second are discharged；Use into sewage disposal system precipitation process Posterior circle；
(3) electrostatic precipitation step：Steam after the process of eddy flow tower 2 delivers to electrostatic precipitator 3 by the 3rd pipeline；By removing
The airflow uniform distribution device 9 that dirt device is arranged so that flue gas is even in deduster electric field；3rd high-pressure spray gun 10 is arranged on gas
Near even distribution device 9, the bottom of even gas distribution device 9 is preferably placed at and positioned at the bottom opening top of electrostatic precipitator 3, the
Four high-pressure spray guns 11 are arranged on the top of electric field component so that the atomized drop fine particle size hydrophilic with part in dust-laden steam
Grit mutually condenses, and it is easier to charged；Meanwhile, atomized water forms water membrane in anode plate surface；In dust-laden steam partly not
The grit of hydrophilic fine particle size, directly with cathode line release a large amount of electronics directly in conjunction with, it is charged；High voltage power supply passes through negative electrode
Line discharges, and between board-like or cellular positive plate electric field is formed, in the presence of electric field force, charged grit and dust-laden drop
Move to positive plate direction, trapped by the moisture film of anode plate surface, reach the purpose of smart dedusting；Moisture film it is dirty and rinse
In the presence of water, the grit being enriched on pole plate is pulled away, so that it is guaranteed that the cleaning of pole plate, polar curve, the deduster bottom sets
Sewage bucket is put, the sewage to flowing out on pole plate is collected and discharges into outward and uses into sewage disposal system precipitation process Posterior circle；
Flue gas after electrostatic precipitation processes enters air-introduced machine 4 by electrostatic precipitator outlet, chimney is subsequent discharged into, into air.
The technological parameter of this device, it is as follows：
Process exhaust gas volumn：250000m3/h
Entrance flue gas temperature：120℃
Exit gas temperature：60℃
Inlet flue gas concentration：About 8g/Nm3
Water consumption：120t/h
Electrostatic precipitator power consumption：180Kw
System equipment resistance：About 4000Pa
Exiting flue gas dust content：<5mg/Nm3。
Claims (5)
1. a kind of to carry out the device that dust removal process reaches ultra-clean discharge to slag processing rolling area dust-laden steam, it includes scrubbing tower
(1), eddy flow tower (2), electrostatic precipitator (3), the first pipeline, second pipe, the 3rd pipeline, the 4th pipeline and air-introduced machine (4)；
The bottom of scrubbing tower (1) is provided with the first opening, and the first opening is connected by the first pipeline with rolling area space, for by rolling
The dust-laden steam (5) that area produces introduces scrubbing tower (1) and carries out spray process, connects the second pipe of scrubbing tower (1) and eddy flow tower (2)
Road is arranged on the top of scrubbing tower (1) and eddy flow tower (2), for the dust-laden steam after scrubbing tower (1) process to be incorporated into into eddy flow
Carry out cyclonic separation process in tower (2), the bottom of eddy flow tower (2) is provided with the second opening, the second opening by the 3rd pipeline with
The bottom opening connection of electrostatic precipitator (3), for the steam after eddy flow tower (2) process to be introduced into electrostatic precipitator (3), electrostatic
Deduster is connected by the 4th pipeline with air-introduced machine (4), and the gas after electrostatic precipitator (3) process is discharged via air-introduced machine (4).
2. device according to claim 1, it is characterised in that the top of scrubbing tower (1) arranges the first high-pressure spray gun (6),
First high-pressure spray gun (6) is provided with multilayer, preferably 2-8 layers, is arranged in order downwards from the top of scrubbing tower (1)；First high pressure
The pressure of supply water of spray gun is 0.5-2MPa, and preferably 1.0MPa, the drop particle diameter of ejection is controlled within 200 microns, preferably
50-200 microns.
3. the device according to one of claim 1-2, it is characterised in that the second high pressure is set on the top of eddy flow tower (2)
Spray gun (7), the second high-pressure spray gun (7) arranges at least one of which, preferably 1-3 layers；The pressure of supply water of the second high-pressure spray gun (7) is
0.5-2MPa, preferably 1.0MPa, the drop particle diameter of ejection is controlled within 200 microns, preferably 30-150 microns.It is preferred that,
Eddy flow tower (2) top arranges rotating flow cone (8), and it is arranged on the bottom of the second high-pressure spray gun (7), and rotating flow cone (8) arranges at least one
Layer, preferably 1-3 layers, and each layer rotating flow cone (8) centrifugal force are different, the grit of correspondence trapping different-grain diameter.
4. the device according to one of claim 1-3, it is characterised in that electrostatic precipitator (3) is including even gas distribution device
(9), electric field component, the 3rd high-pressure spray gun (10) and the 4th high-pressure spray gun (11), the entrance of electrostatic precipitator (3) arranges one layer
Even gas distribution device (9), even gas distribution device (9) is positioned at electric field component bottom so that dust-laden steam is even into electrostatic precipitation
Device (3) internal electric field.It is preferred that, the 3rd high-pressure spray gun (10) is arranged near even gas distribution device (9), is preferably placed at even gas distribution
The bottom of device (9) and positioned at the bottom opening top of electrostatic precipitator (3), the 3rd high-pressure spray gun (10) arranges at least one
Layer, preferably 1-3 layers；The pressure of supply water of the 3rd high-pressure spray gun (10) be 0.5-2MPa, preferably 1.0MPa, the water droplet grain of ejection
Footpath is controlled within 200 microns, preferably 30-150 microns.It is preferred that, the 4th high-pressure spray gun (11) is arranged on the upper of electric field component
Side, the 4th high-pressure spray gun (11) arranges at least one of which, preferably 1-3 layers；The pressure of supply water of the 4th high-pressure spray gun (11) is 0.3-
1MPa, preferably 0.5MPa, the drop particle diameter of ejection is controlled within 200 microns.It is preferred that, the cathode line of electric field component is using firm
Property prickle wire, the positive plate of electric field component adopts board-like or honeycomb fashion pole plate, high voltage power supply to discharge by cathode line, with it is board-like or
Electric field is formed between cellular positive plate, high voltage power supply is using three-phase or composite pulse constant-current supply.It is preferred that, electrostatic precipitator
(3) outlet is provided with explosion venting valve, and its quantity is at least one, and preferably 1-3 is individual.It is preferred that, deduster bottom arranges sewage bucket,
Sewage to flowing out on the pole plate is collected and discharges into outward and uses into sewage disposal system precipitation process Posterior circle.
5. it is a kind of that the process that dust removal process reaches ultra-clean discharge is carried out to slag processing rolling area dust-laden steam, it include with
Lower step：
(1) spraying and dedusting step：When the dust-laden steam (5) that rolling area produces introduces the bottom of scrubbing tower (1) through the first pipeline,
On scrubbing tower (1) top, the first high-pressure spray gun (6), the grit phase of the water droplet that it is ejected and larger granularity in dust-laden steam are set
Mutually collision, formation dust-laden drop agglomerated together, under gravity, dust-containing liquid drips or sticks to and washs quilt on inner wall of tower
Water sweeps away, and after falling into scrubbing tower (1) bottom, the sewage draining exits of Jing first are discharged；Make into sewage disposal system precipitation process Posterior circle
With；
(2) cyclonic separation process steps：Dust-laden steam after scrubbing tower (1) process enters into eddy flow tower through second pipe
(2) relay afterflow to move, eddy flow tower (2) top is provided with the second high-pressure spray gun (7), in the water droplet that it is ejected and dust-laden steam
The grit of smaller particle size is mutually collided, formation dust-laden drop agglomerated together, and on the top of eddy flow tower (2) rotating flow cone (8) is arranged,
So that dust-containing liquid is dropped under centrifugal force and Action of Gravity Field, dust-containing liquid drips or sticks to and swept away by water on eddy flow tower (2) inwall,
After falling into eddy flow tower (2) bottom, the sewage draining exits of Jing second are discharged；Use into sewage disposal system precipitation process Posterior circle；
(3) electrostatic precipitation step：Steam after eddy flow tower (2) process delivers to electrostatic precipitator (3) by the 3rd pipeline；By removing
The airflow uniform distribution device (9) that dirt device is arranged so that flue gas is even in deduster electric field；3rd high-pressure spray gun (10) is arranged on
Near even gas distribution device (9), the bottom of even gas distribution device (9) is preferably placed at and positioned at the bottom of electrostatic precipitator (3)
Upper opening portion, the 4th high-pressure spray gun (11) is arranged on the top of electric field component so that atomized drop and part parent in dust-laden steam
The grit of the fine particle size of water mutually condenses, and it is easier to charged；Meanwhile, atomized water forms water membrane in anode plate surface；Contain
The grit of the not hydrophilic fine particle size in part in dirt steam, directly with a large amount of electronics of cathode line release directly in conjunction with, it is charged；It is high
Voltage source is discharged by cathode line, and between board-like or cellular positive plate electric field is formed, charged in the presence of electric field force
Grit and dust-laden drop face south pole plate direction motion, trapped by the moisture film of anode plate surface, reach the purpose of smart dedusting；In water
Film is dirty and flushing water in the presence of, the grit being enriched on pole plate is pulled away, so that it is guaranteed that the cleaning of pole plate, polar curve, institute
State deduster bottom and sewage bucket is set, the sewage to flowing out on pole plate is collected and discharges into outward into sewage disposal system place of settling
Reason Posterior circle is used；Flue gas after electrostatic precipitation processes enters air-introduced machine (4) by electrostatic precipitator outlet, subsequent discharges into cigarette
Chimney, into air.
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| CN107551753A (en) * | 2017-10-09 | 2018-01-09 | 铜陵安东铸钢有限责任公司 | A kind of collection tapping equipment of casting dust in large-scale steel-casting production process |
| CN108452622A (en) * | 2018-04-08 | 2018-08-28 | 苏州瑞之弘空气净化有限公司 | A kind of engineering workshop Environmental-protecting dust-removing equipment |
| CN109432937A (en) * | 2018-12-19 | 2019-03-08 | 马鞍山市方正机械制造有限责任公司 | A kind of blast furnace water slag-flushing Steam Recovery processing system and method |
| CN110496519A (en) * | 2019-08-30 | 2019-11-26 | 淮南北新建材有限公司 | A kind of fluidized bed furnace outlet particle substance treating method and system |
| CN110694399A (en) * | 2019-11-18 | 2020-01-17 | 陕西龙门钢铁有限责任公司 | Method and system for treating steel slag flue gas |
| WO2020083147A1 (en) * | 2018-10-22 | 2020-04-30 | 上海必修福企业管理有限公司 | Engine intake air dust removal system and method |
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| WO2020083147A1 (en) * | 2018-10-22 | 2020-04-30 | 上海必修福企业管理有限公司 | Engine intake air dust removal system and method |
| CN109432937A (en) * | 2018-12-19 | 2019-03-08 | 马鞍山市方正机械制造有限责任公司 | A kind of blast furnace water slag-flushing Steam Recovery processing system and method |
| CN110496519A (en) * | 2019-08-30 | 2019-11-26 | 淮南北新建材有限公司 | A kind of fluidized bed furnace outlet particle substance treating method and system |
| CN110694399A (en) * | 2019-11-18 | 2020-01-17 | 陕西龙门钢铁有限责任公司 | Method and system for treating steel slag flue gas |
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