CN105986287A - Flue gas purification device - Google Patents
Flue gas purification device Download PDFInfo
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- CN105986287A CN105986287A CN201510070000.3A CN201510070000A CN105986287A CN 105986287 A CN105986287 A CN 105986287A CN 201510070000 A CN201510070000 A CN 201510070000A CN 105986287 A CN105986287 A CN 105986287A
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Abstract
The invention provides a flue gas purification device. The flue gas purification device comprises a flue gas reaction box body for containing flue gas generated through aluminum electrolysis and enabling the flue gas to react with aluminum oxide powder. The flue gas purification device further comprises a power separator for separating gas and aluminum oxide powder; an inlet of the power separator communicates with a flue gas outlet of the flue gas reaction box body; a powder outlet of the power separator communicates with a powder collecting device body; and a gas outlet of the power separator communicates with a gas collecting device body. The aluminum oxide powder in the flue gas reaction box body reacts with fluoride-containing gas bodies in the flue gas; the aluminum oxide powder and the flue gas enter the power separator after reacting is completed; powder particles in the flue gas and the gas bodies in the flue gas are separated through the power separator; the powder enters the powder collecting device body; and the gas bodies enter the gas collecting device body and can be subjected to follow-up procedures. By means of the structure, the flue gas is subjected to solid-gas separation treatment through the power separator, and the oxidation adsorption property is fully achieved; and the provided flue gas purification device is capable of improving the purification efficiency and decreasing the filter bag dust collecting load.
Description
Technical field
The application relates to electrolytic aluminum smoke processing technology field, more particularly, it relates to a kind of cigarette
Air purifying apparatus.
Background technology
The most general method producing primary aluminum is fused salt electrolysis process, in the life of electrolytic aluminium
During product, aluminium cell can produce substantial amounts of smoking gas containing fluorine, it is necessary to through purified treatment ability
Enough it is discharged in air.Domestic Smoke Gas Purity by Electrolysis system is substantially all employing low-pressure reversal blower wind cloth
Bag dust collector or low pressure pulse bag filter, the typical process flow of purification techniques substantially can be returned
Receive is two kinds.The first is: fresh aluminum oxide and fluorinated alumina are simultaneously introduced in reactor,
Complete reacted fluorinated alumina and carry out gas solid separation by cloth bag；The second is: in reaction
Adding the fluorinated alumina recycled at device upstream about 20 meters, fresh aluminum oxide is the most straight
Connect addition reactor, enter filter together after completing reaction, carry out gas solid separation by filter bag,
Cloth bag typically selected by filter bag.
No matter use which kind of traditional electrolyte aluminum flue gas dry cleaning technological process above-mentioned, its essence
Feature be after fresh aluminum oxide completes adsorption reaction with fluorinated alumina all together with enter bag-type dust
Device.Owing to using fresh aluminum oxide and fluorinated alumina to simultaneously enter dedusting after completing adsorption reaction
Device carries out the technological process of gas solid separation, the most not only increases the operating load of cleaner unit, makes
System dynamic consumes height, does not the most make full use of fresh aluminum oxide and fluorinated alumina response characteristic
Difference, cause purification efficiency low.Wherein, the load of dust remove of filter bag is the most especially difficult to solve.
Therefore, one how is provided can to improve gas cleaning efficiency, reduce filter bag load of dust remove
Smoke eliminator, be current those skilled in the art's problem demanding prompt solution.
Summary of the invention
In view of this, this application provides a kind of smoke eliminator, to realize providing a kind of energy
Enough reduce the smoke eliminator of filter bag load of dust remove.
In order to achieve the above object, the application provides following technical scheme:
A kind of smoke eliminator, including for accommodating flue gas and the alumina powder that electrolytic aluminium produces
The smoke reaction casing of end reaction, also includes dividing for the power separating gas and alumina powder
From device, the import of dynamic separator connects with the exhanst gas outlet of smoke reaction casing, and power separates
The dust outlet of device connects with powder collection device, and the gas outlet of dynamic separator receives with gas
Acquisition means connects.
Preferably, smoke reaction casing includes for inputting alumina powder, making it carry for the first time
Fluorine first reaction casing be arranged at below and connect with bottom it for making alumina powder
End second time carries the second reaction casing of fluorine, and the exhanst gas outlet of the second reaction casing separates with power
The inlet communication of device.
Preferably, the gas approach and first of the first reaction casing reacts the rising cigarette below casing
The exhanst gas outlet connection in road.
Preferably, the lower section of the first reaction casing is provided with fresh chute, and fresh chute is by perpendicular
The little air stripping directly extended upwardly in the first reaction chamber body communicates therewith.
Preferably, the second reaction casing is uptake flue, the gas approach of uptake flue and dedusting
Device bottom inlet pipeline communication.
Preferably, the top of uptake flue is provided with cyclically charging device, and its charging aperture is arranged at
The bottom of one reaction casing, the border of the charging aperture of cyclically charging device is provided with slightly below circulation and adds
The charging spout of the charging aperture of glassware, first reaction casing sidewall from top to bottom towards tilted,
Its end tilted extends to charging spout, and the discharging opening of cyclically charging device is communicated in uptake flue
Top.
Preferably, the discharging opening of cyclically charging device is provided with uniformly arrangement down-set multiple
Discharge nozzle.
Preferably, dynamic separator is arranged at the top of uptake flue, the import of dynamic separator
Connecting with the exhanst gas outlet of uptake flue, the powder connected with the dust outlet of dynamic separator is received
Packaging is set to return chute, returns chute and is communicated in load fluorine storehouse, goes out with the gas of dynamic separator
The gas collector of mouth connection is the first reaction casing.
Preferably, the first reaction chamber body is positioned at the middle casing that is provided above of little air stripping, middle casing
Inside being provided with densely covered filter bag, the top of middle casing is provided with gas outlet, the bottom of middle casing
Connecting with the top of the first reaction casing, filter bag is arranged at above the outlet of little air stripping.
Preferably, the top of middle casing is provided with pulse spraying equipment, its pulse spout connection in
In raising middle flask body, just filter bag is exported.
Smoke eliminator provided herein, including for accommodating the flue gas that electrolytic aluminium produces
The smoke reaction casing reacted with alumina powder, also includes for separating gas and alumina powder
The dynamic separator at end, the import of dynamic separator connects with the exhanst gas outlet of smoke reaction casing,
The dust outlet of dynamic separator connects with powder collection device, the gas outlet of dynamic separator
Connect with gas collector.Fluorine-containing with flue gas of alumina powder in smoke reaction casing
Gas reaction, adsorbs the fluohydric acid gas in flue gas, enters dynamic after having adsorbed through exhanst gas outlet
Power separator, the powder particle in flue gas is separated by dynamic separator with gas, and powder enters
Entering powder collection device, gas enters gas collector, and this portion gas can carry out follow-up
Flow process.Owing to have employed this structure, use dynamic separator that flue gas is carried out at solid and gas separation
Reason, gives full play to the absorption property of aluminium oxide, and follow-up load of dust remove is greatly reduced, it is achieved that carry
Gas cleaning efficiency, the smoke eliminator of reduction filter bag load of dust remove can be improved for a kind of.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below
The accompanying drawing used required in embodiment or description of the prior art will be briefly described, aobvious and
Easily insight, the accompanying drawing in describing below is only some embodiments of the application, for this area
From the point of view of those of ordinary skill, on the premise of not paying creative work, it is also possible to according to these
Accompanying drawing obtains other accompanying drawing.
Fig. 1 is the structural representation of smoke eliminator provided herein；
Fig. 2 is the front view of smoke eliminator provided herein；
Fig. 3 is the right view of smoke eliminator provided herein；
In upper figure: 1 be inlet pipeline, 2 be uptake flue, 3 be dynamic separator, 4 for dedusting
Device ash bucket, 5 be middle casing, 6 for upper box, 7 for house outlet, 8 for pulse spraying equipment,
9 be building enclosure, 10 be fresh chute, 11 be little air stripping, 12 be cyclically charging device, 13 for returning
Return chute.
Detailed description of the invention
This application provides a kind of smoke eliminator, it is achieved that provide one can improve flue gas
Purification efficiency, the smoke eliminator of reduction filter bag load of dust remove.
Below in conjunction with the accompanying drawing in the embodiment of the present application, to the technical side in the embodiment of the present application
Case carries out clear, complete description, it is clear that described embodiment is only the application one
Divide embodiment rather than whole embodiments.Based on embodiments herein, this area is common
The every other embodiment that technical staff is obtained under not making creative work premise, all
Belong to the scope of the application protection.
Fig. 1 is the structural representation of smoke eliminator provided herein；Fig. 2 is this Shen
The front view of the smoke eliminator please provided；Fig. 3 is gas cleaning provided herein
The right view of device.
The application provide smoke eliminator, including for accommodate electrolytic aluminium produce flue gas with
The smoke reaction casing of alumina powder reaction, also includes for separating gas and alumina powder
Dynamic separator 3, the exhanst gas outlet of the import of dynamic separator 3 and smoke reaction casing is even
Logical, the dust outlet of dynamic separator 3 connects with powder collection device, dynamic separator 3
Gas outlet connects with gas collector.Alumina powder in smoke reaction casing and flue gas
In fluoro-gas reaction, by flue gas fluohydric acid gas adsorb, go out through flue gas after having adsorbed
Mouth enters dynamic separator 3, and the powder particle in flue gas is carried out by dynamic separator 3 with gas
Separating, powder enters powder collection device, and gas enters gas collector, this portion gas
Follow-up flow process can be carried out.Owing to have employed this structure, use dynamic separator 3 to flue gas
Carrying out solid and gas separating treatment, give full play to the absorption property of aluminium oxide, follow-up load of dust remove is significantly
Reduce, it is achieved that provide and a kind of can improve gas cleaning efficiency, reduce filter bag load of dust remove
Smoke eliminator.
In the application one specific embodiment, smoke reaction casing includes for inputting alumina powder
End, it is made to carry for the first time first reaction casing of fluorine and be arranged at below and connect with bottom it
For make alumina powder second time carry fluorine second reaction casing, second reaction casing cigarette
Gas outlet and the inlet communication of dynamic separator 3.First reaction casing and the second reaction casing are equal
Being to compare generally method, concrete, the first reaction casing may refer to dust collector ash hopper 4,
Middle casing 5 can also be included, because the two is inherently in the first time carrying out alumina powder
Carry fluorine.
In the application one specific embodiment, the gas approach of the first reaction casing and the first reaction chamber
The exhanst gas outlet connection of the dynamic separator 3 below body.Thus, can to enter first anti-for flue gas
Answer casing.
In the application one specific embodiment, the lower section of the first reaction casing is provided with fresh chute
10, fresh chute 10 by stretch into straight up the little air stripping 11 in the first reaction chamber body and its
Connection.Thus, alumina powder can enter the first reaction casing.
In the application one specific embodiment, the second reaction casing is uptake flue 2, uptake flue
The gas approach of 2 connects with cleaner unit bottom inlet pipeline 1.Thus, to enter second anti-for flue gas
Answer casing.
In the application one specific embodiment, the top of uptake flue 2 is provided with cyclically charging device 12,
Its charging aperture is arranged at the bottom of the first reaction casing, the border of the charging aperture of cyclically charging device 12
It is provided with the charging spout of the slightly below charging aperture of cyclically charging device 12, the sidewall of the first reaction casing
From top to bottom towards tilted, its end tilted extends to charging spout, cyclically charging device 12
Discharging opening be communicated in the top of uptake flue 2.Use this kind of structure, once carry the oxidation of fluorine
Aluminium powder, due to gravity fall, relies on the sidewall of the first reaction casing to glide, is embodied in and removes
The sidewall of dirt device ash bucket 4.Fall into after downslide in charging spout, after overflowing, flow to cyclically charging
The charging aperture of device 12, and slip to uptake flue 2 from its discharging opening, i.e. enter the second reaction
Casing.
In the application one specific embodiment, the discharging opening of cyclically charging device 12 is provided with uniformly row
Cloth down-set multiple discharge nozzles.Use this kind of structure, facilitate uniform discharge, make reaction
Uniformly occur.
In the application one specific embodiment, dynamic separator 3 is arranged at the top of uptake flue 2,
The import of dynamic separator 3 connects with the exhanst gas outlet of uptake flue 2, with dynamic separator 3
Dust outlet connection powder collection device for return chute 13, return chute 13 be communicated in
Carrying fluorine storehouse, the gas collector connected with the gas outlet of dynamic separator 3 is the first reaction
Casing.Using this kind of structure, the alumina powder once carrying fluorine is blown by the gas of inlet pipeline 1
In dynamic separator 3, carry out solid and gas separation.For making aluminium oxide be sufficiently mixed with flue gas,
Alumina powder whole process adverse current join in smoking gas containing fluorine, flue gas dynamic separator 3 out after
Enter the first reaction casing.
In the application one specific embodiment, the first reaction chamber body is positioned at being provided above of little air stripping 11
Having middle casing 5, be provided with densely covered filter bag in middle casing 5, the top of middle casing 5 is provided with
Gas outlet, the bottom of middle casing 5 connects with the top of the first reaction casing, and filter bag is arranged at
Above the outlet of little air stripping 11.Filter bag attachment fresh aluminum oxide powder, can be formed with fresh oxidation
Aluminum is main cake layer, it is possible to increase the service life of filter bag and dust removing effects.
In the application one specific embodiment, the top of middle casing 5 is provided with pulse spraying equipment 8,
Filter bag, in middle casing 5, is just exported by its pulse spout connection.Pulse spraying equipment 8 is permissible
The dust adhered on filter bag is regularly cleared up.
The mesh of the application is the adsorption reaction characteristic for fresh aluminum oxide and fluorinated alumina, opens
Send two sections of counter current dry purification methods of a kind of electrolysis flue gas, and synchronous development go out compact conformation,
Rationally distributed, flow process is simple, efficiency of dust collection is high, purification efficiency is high, good purification complete
Technical equipment.Wherein, adverse current refers to that alumina powder is contrary with the flow direction of flue gas.
In particular, the application solves the scheme that its technical problem taked and is: electrolysis flue gas
Entered through uptake flue 2 and dynamic separator 3 by the inlet pipeline 1 bottom smoke eliminator
Enter casing 5 in ash bucket 4 and cleaner unit internal, then after sock filtration, enter house outlet
7, by the draft of main smoke discharging blower fan, enter chimney.And participate in the fresh aluminum oxide of adsorption reaction
It is transported to the fresh chute 10 of dust collector ash hopper 4 both sides by fresh bin discharge port external through chute, uses
The mode of overflow discharging is evenly distributed to often to organize in the little air stripping 11 of cleaner unit bottom, by high pressure
Wind is injected in dust collector ash hopper 4, uniformly scatters, and relies on ascending air to be attached on filter bag,
Form cake layer.Afterwards, then the pulse spraying equipment 8 at casing 5 top in passing through, will in
In casing 5, a reacted fluorinated alumina relies on action of gravity to fall in dust collector ash hopper 4.
One time fluorinated alumina enters uptake flue 2 through circulation blanking device 12, carries out second with flue gas
Secondary adsorption reaction, ash-laden gas afterwards is through the centrifugation of dynamic separator 3, under collection
The dust come enters and returns chute 13, is transported to carry fluorine storehouse, and by the electrolysis flue gas after separating
Entrance carries out adsorption reaction with the fresh aluminum oxide sprayed into by little air stripping 11 in casing 5.
Two sections of counter current dry purifiers of electrolytic aluminum smoke: be provided with the building enclosure of top maintenance
9 and the upper box of pulse spraying equipment 8, middle casing 5 equipped with filter bag, cyclically charging device 12,
The dynamic separator 3 of gas solid separation, for the uptake flue 2 of adsorption reaction, uniform distribution flue gas
Inlet pipeline 1, and carry the fresh chute 10 of fresh material, carry a fluorinated alumina
Circulation chute and the return chute 13 of feeding secondary fluorinated alumina.
It is provided with between the uptake flue 2 of the application and dust collector ash hopper 4 and there is the dynamic of gas solid separation
Power separator 3, by the secondary fluorinated alumina through second time adsorption reaction from uptake flue 2
Separating in the flue gas discharged, the secondary fluorinated alumina after separation enters and returns chute 13
It is transported to the load fluorine storehouse of cleaning system, through the cigarette containing low concentration fluohydric acid gas of gas solid separation
The fresh aluminum oxide that in gas entrance, casing 5 is strong with adsorption reaction ability with dust collector ash hopper 4 is carried out
Reaction.
The fresh chute in smoke eliminator bottom 10 of the application, the highest and uniform overflow
Discharging, it is ensured that between each dust removing units, fresh aluminum oxide feed is uniform.And often joint chute is furnished with
Little air stripping 11, it is possible to use the fresh aluminum oxide of overflow discharging is sprayed into middle casing 5 He by high-pressure blast
Dust collector ash hopper 4, relies on the uniform distribution device at little air stripping 11 top, fresh aluminum oxide is existed
It is covered with rapidly bottom filter bag, reacts with the flue gas containing low concentration fluohydric acid gas.So that it is guaranteed that
The purification efficiency that cleaning system is higher, and formation one layer is main with fresh aluminum oxide on filter bag
The cake layer of composition, thus reduce resistance of the filter bag, extend life of bag filter.
On the cleaner unit uptake flue 2 of the application, cyclically charging device 12 is installed.Through for the first time
The fresh aluminum oxide of adsorption reaction falls into dust collector ash hopper at pulse spraying equipment 8 to filter bag ash removal
After 4, by cyclically charging device 12, a fluorinated alumina is evenly arranged in uptake flue 2
In, carry out adsorption reaction with the smoking gas containing fluorine containing high concentration.Through second time adsorption reaction
Aluminium oxide enters in dynamic separator 3 together with flue gas, separates with fluoro-gas, reaches
Reduce the purpose of follow-up flow process dust concentration.
The filtering material the most often organizing dust removing units uses rounded pocket, it is possible to real according to scene
Border situation, the factor such as comprehensive exhaust gas volumn, place, external channeling selects appropriate configuration combination,
Such as filter bag can use a diameter of 127mm, 150mm or 160mm etc., and filter bag length can
To use 6m, 6.5m, 8m etc..According to often organizing the filter bag configuring condition of dust removing units, select
Suitably pulse spraying equipment 8, including a gas bag, pulse valve and supporting conduit fittings etc.,
Its control system, by PLC centralized Control, can use timing, level pressure, artificial three kinds of winding-up sides
Formula, uses compressed air online ash removal scheme.The building enclosure 9 of dust remover roof is provided with inspection
Repair with electric block, in order to change filter bag, repair apparatus uses, easy and simple to handle.
This device can improve purification efficiency and the efficiency of dust collection of purification, the dust in discharge flue gas
Content is less than 10mg/Nm3, and content of fluoride is less than 1.5mg/Nm3, makes discharge index reach
Domestically leading level；Secondly, use this device can reduce aluminium oxide breakage rate, be conducive to electricity
Solve and produce.
The smoke eliminator that the application provides, is connected by bottom cleaner unit inlet pipeline 1
Connecing multiple uptake flue 2, and then corresponding multiple dust removing units, each dust removing units all includes
The various features stated.
In this specification, each embodiment uses the mode gone forward one by one to describe, and each embodiment emphasis is said
Bright is all the difference with other embodiments, and between each embodiment, identical similar portion is mutual
See mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of
Or use the application.Those skilled in the art are come by the multiple amendment to these embodiments
Saying and will be apparent from, generic principles defined herein can be without departing from the application's
In the case of spirit or scope, realize in other embodiments.Therefore, the application will not be by
It is limited to the embodiments shown herein, and is to fit to and principles disclosed herein and new
The widest scope that grain husk feature is consistent.
Claims (10)
1. a smoke eliminator, including for accommodating flue gas and the oxidation that electrolytic aluminium produces
The smoke reaction casing of aluminium powder reaction, it is characterised in that also include for separating gas and oxygen
Change the dynamic separator (3) of aluminium powder, the import of described dynamic separator (3) and described flue gas
The exhanst gas outlet connection of reaction casing, the dust outlet of described dynamic separator (3) is received with powder
Acquisition means connects, and the gas outlet of described dynamic separator (3) connects with gas collector.
2. smoke eliminator as claimed in claim 1, it is characterised in that described flue gas
Reaction casing includes for inputting alumina powder, making it carry the first reaction casing of fluorine for the first time
Be arranged at below and connect with bottom it for making alumina powder second time carry the of fluorine
Two reaction casings, the exhanst gas outlet of described second reaction casing and described dynamic separator (3)
Inlet communication.
3. smoke eliminator as claimed in claim 2, it is characterised in that described first
The flue gas of the uptake flue (2) below the gas approach of reaction casing and described first reaction casing
Outlet.
4. smoke eliminator as claimed in claim 3, it is characterised in that described first
The lower section of reaction casing is provided with fresh chute (10), and described fresh chute (10) is by vertically
The little air stripping (11) extended upwardly in described first reaction chamber body communicates therewith.
5. smoke eliminator as claimed in claim 4, it is characterised in that described second
Reaction casing is described uptake flue (2), the gas approach of described uptake flue (2) and import
Pipeline (1) connects.
6. smoke eliminator as claimed in claim 5, it is characterised in that described rising
The top of flue (2) is provided with cyclically charging device (12), and its charging aperture is arranged at described first
The bottom of reaction casing, the border of the charging aperture of described cyclically charging device (12) is provided with lower slightly
In the charging spout of the charging aperture of described cyclically charging device (12), the side of described first reaction casing
Wall is from top to bottom towards tilted, and its end tilted extends to described charging spout, described circulation
The discharging opening of feeder (12) is communicated in the top of described uptake flue (2).
7. smoke eliminator as claimed in claim 6, it is characterised in that described circulation
The discharging opening of feeder (12) is provided with uniformly arrangement down-set multiple discharge nozzles.
8. smoke eliminator as claimed in claim 7, it is characterised in that described power
Separator (3) is arranged at the top of described uptake flue (2), described dynamic separator (3)
Import connect with the exhanst gas outlet of described uptake flue (2), with described dynamic separator (3)
Dust outlet connection powder collection device for return chute (13), described return chute (13)
Being communicated in load fluorine storehouse, the collection and confinement of gases connected with the gas outlet of described dynamic separator (3) fills
It is set to described first reaction casing.
9. smoke eliminator as claimed in claim 8, it is characterised in that described first
What reaction chamber body was positioned at described little air stripping (11) is provided above middle casing (5), described raising middle flask
Being provided with densely covered filter bag in body (5), the top of described middle casing (5) is provided with gas and goes out
Mouthful, the bottom of described middle casing (5) connects with the top of described first reaction casing, described filter
Bag is arranged at above the outlet of described little air stripping (11).
10. smoke eliminator as claimed in claim 9, it is characterised in that described raising middle flask
The top of body (5) is provided with pulse spraying equipment (8), and its pulse spout connection is in described raising middle flask
In body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510070000.3A CN105986287A (en) | 2015-02-09 | 2015-02-09 | Flue gas purification device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510070000.3A CN105986287A (en) | 2015-02-09 | 2015-02-09 | Flue gas purification device |
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| CN105986287A true CN105986287A (en) | 2016-10-05 |
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