CN202072779U - Fire hole gas collecting device for aluminum electrolytic cell - Google Patents
Fire hole gas collecting device for aluminum electrolytic cell Download PDFInfo
- Publication number
- CN202072779U CN202072779U CN2011201423772U CN201120142377U CN202072779U CN 202072779 U CN202072779 U CN 202072779U CN 2011201423772 U CN2011201423772 U CN 2011201423772U CN 201120142377 U CN201120142377 U CN 201120142377U CN 202072779 U CN202072779 U CN 202072779U
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- gas collecting
- pinkeye
- fire hole
- electrolytic cell
- gas
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Abstract
The utility model discloses a fire hole gas collecting device for an aluminum electrolytic cell, which is structurally characterized in that fixed gas collecting tubes (2) are sleeved on the peripheries of crust breaker unloading devices (5) of the aluminum electrolytic cell and connected with an electrolytic cell horizontal gas collecting hood (7) through supports (6), the lower end of each fixed gas collecting tube (2) is connected with a fire hole gas collecting hood (1), the upper end of each fixed gas collecting tube (2) is connected with a fire hole fume exhaust branch tube (4), the fixed gas collecting tubes (2) are connected with a fire hole gas collecting hood lifting device (3), each fire hole gas collecting hood (1) is aligned with a crust breaker unloading hole on covering materials on the lower portion of the corresponding crust breaker unloading device (5), and heatproof insulated joints are arranged between each fixed gas collecting tube (2) and the fire hole fume exhaust branch tube (4). Compared with the prior art, the fire hole gas collecting device for the aluminum electrolytic cell is capable of effectively collecting fume discharged from fire holes of the electrolytic cell, fume treatment capacity of an electrolytic series decontamination system is reduced and investing and operating cost are lowered.
Description
Technical field
The pinkeye gas extractor of point feeding prebaked cell for aluminum-reduction in the middle of the utility model relates to a kind of being used for.
Background technology
Aluminium cell is the main equipment of aluminium metallurgy.The net reaction of aluminium electrolysis process is:
2Al
2O
3+3C─→4Al+3CO
2
Under high temperature, hot pressing condition, electrochemistry and physical-chemical reactions such as ionogen hydrolysis, volatilization can take place in the aluminium cell, and a certain amount of obnoxious flavour of discharge comprises pollutents such as hydrogen fluoride, dust and carbonic acid gas in the groove.Because the fused electrolyte on top, molten bath can generate firmer scleroma shell in the aluminium cell when temperature is lower than crystallization and freezing point.In order to be incubated in the strengthening groove, generally all add certain thickness (broken powder of 50～150mm) ionogen and powdery aluminum mulch again at the hard incrustive upper surface of ionogen.Therefore, the harmful flue dust that generates in the electrolyzer must be discharged from the fixedly crust hole (being commonly called as " pinkeye ") that several crust breaking blanking devices that the groove superstructure is installed are opened.
Must collect and administer from the harmful smokes such as hydrogen fluoride that electrolyzer " pinkeye " is discharged, otherwise Aluminium Electrolysis is difficult to qualified discharge.The flue gas collection method of conventional aluminum electrolyzer is to cover so that realize airtight gas collection with the loose slot cover of tens aluminums and the level set gas hood whole huge space with tens anodes above the electrolyzer and groove thorax lid, the smoke evacuation that collected volume of smoke and the smoke evacuation arm of the air that leaks out by the upper level gas skirt are connected to the outside, workshop gathers pipe, and the electrolysis flue dust that gathers each electrolyzer is delivered to dry purifying system and administered.
According to prebaked cell list groove exhaust smoke level (Q) calculation formula:
Q＝（L＋
W）×
1/η×
H?×
ν×3600
Can calculate the design exhaust smoke level of different grooveds, be about 12000m as 300kA electrolyzer exhaust smoke level design load
3/ hr.
And actual emissions figure is very little in the groove of electrolyzer, only is about 131m according to theoretical calculation
3The exhaust gas volumn that generates in/the hr, electrolyzer only accounts for the 131/12000=1.09% of the single groove discharge capacity of design.As seen there is the non-airtight defective of leaking out more greatly in the airtight gas collection method of groove cover large space, simultaneously, when operations such as replacing anode, interpolation mulch, must open part groove cover, aggravated the variation of gas collection air quantity, this causes electrolytic series must be equipped with powerful smoke exhaust fan, causes the purification facility of traditional electrolysis flue dust natural gas gathering system huge, and investment and running cost are all very big.
Therefore, develop the depressed structure of a kind of category set, reduce the flue gas treatment capacity of electrolytic series purification system as far as possible, it is very important and necessary reducing investment and running cost.
Summary of the invention
The technical problem to be solved in the present invention is: the pinkeye gas extractor that a kind of aluminium cell is provided, be specifically designed to and collect the harmful smoke that electrolyzer exhaust " pinkeye " is overflowed, thereby for the flue gas treatment capacity that significantly reduces purification system creates favorable conditions, huge with the purification facility that overcomes the electrolysis flue dust natural gas gathering system that prior art exists, deficiency such as investment and running cost are big.
The utility model is taked following technical scheme: the fixed set tracheae is enclosed within the crust breaking blanking device periphery of aluminium cell, and its lower end connects the pinkeye gas skirt, and its upper end connects pinkeye smoke evacuation arm, and is connected with pinkeye gas skirt lifting device; The pinkeye gas skirt is aimed at the crust breaking blanking hole on the mulch of crust breaking blanking device bottom.
The fixed set tracheae is connected with electrolyzer level set gas hood by supporting.
Between fixed set tracheae and pinkeye smoke evacuation arm, the high temperature insulation joint is set.
Compared with prior art, the utility model can be collected flue dust in the groove of discharging from the electrolyzer pinkeye effectively, reduces the flue gas treatment capacity of electrolytic series purification system, reduces investment and running cost.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Embodiment of the present utility model: at each the peripheral edge cover of crust breaking blanking device 5 cylindrical or a rectangle or quadrate fixed set tracheaes 2 of electrolyzer, and be fixed on the electrolyzer level set gas hood 7 corresponding tapping by supporting 6, fixed set tracheae 2 tops are connected with pinkeye smoke evacuation arm 4, and the smoke evacuation that is connected to the potroom outside gathers pipe; Fixed set tracheae 2 bottoms inlay again cover connect one cylindrical (bottom can be horn-like) but or rectangle or square, and the pinkeye gas skirt 1 of oscilaltion, pinkeye gas skirt 1 is aimed at the electrolyzer exhaust " pinkeye " that the crust breaking blanking hole on the crust breaking blanking device 5 bottom mulches promptly is commonly called as, pinkeye gas skirt 1 relies on the deadweight nature to be seated on " pinkeye " loose mulch all around during ordinary production, be responsible for to collect flue dust in the groove of discharging from the electrolyzer pinkeye, and (0～100mm) can adjust and up and down within the specific limits along with the interpolation thickness of mulch.Because fixed set tracheae 2 and pinkeye gas skirt 1 edge are enclosed within crust breaking blanking device 5 peripheries, pinkeye punching and raw material when not hindering ordinary production are added into groove.When electrolyzer need be opened the groove cover and carries out operation such as anode change, can be by pinkeye gas skirt lifting device 3 actions that link to each other with pinkeye gas skirt 1, make pinkeye gas skirt 1 rise to certain altitude (100～300mm), satisfy the working space requirement.
In addition, consider the phenomenon that conductive anode charcoal piece may appear running in pinkeye gas skirt 1 lower end, easily cause ground connection, can consider to be connected by the high temperature insulation joint with pinkeye smoke evacuation arm 4 at fixed set tracheae 2 for avoiding the groove superstructure directly to be connected with the smoke evacuation arm.All pinkeye gas skirts of pinkeye gas skirt lifting device 3 lifting simultaneously electrolyzer, its operating stick can be designed to artificial or the pneumatic or electrically operated mode of machinery.By pinkeye gas skirt lifting device 3, also when pinkeye takes place to stop up, can open pinkeye gas skirt 1, clear up and dredge operations such as pinkeye.
Claims (5)
1. the pinkeye gas extractor of an aluminium cell, it is characterized in that: fixed set tracheae (2) is enclosed within crust breaking blanking device (5) periphery of aluminium cell, its lower end connects pinkeye gas skirt (1), and its upper end connects pinkeye smoke evacuation arm (4), and is connected with pinkeye gas skirt lifting device (3); Pinkeye gas skirt (1) is aimed at the crust breaking blanking hole on the mulch of crust breaking blanking device (5) bottom.
2. the pinkeye gas extractor of aluminium cell according to claim 1 is characterized in that: fixed set tracheae (2) is connected with electrolyzer level set gas hood (7) by supporting (6).
3. the pinkeye gas extractor of aluminium cell according to claim 1 is characterized in that: the high temperature insulation joint is set between fixed set tracheae (2) and pinkeye smoke evacuation arm (4).
4. the pinkeye gas extractor of aluminium cell according to claim 1, it is characterized in that: pinkeye gas skirt (1) is a trumpet type.
5. the pinkeye gas extractor of aluminium cell according to claim 1, it is characterized in that: fixed set tracheae (2) is circle or square-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201423772U CN202072779U (en) | 2011-05-09 | 2011-05-09 | Fire hole gas collecting device for aluminum electrolytic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201423772U CN202072779U (en) | 2011-05-09 | 2011-05-09 | Fire hole gas collecting device for aluminum electrolytic cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202072779U true CN202072779U (en) | 2011-12-14 |
Family
ID=45110885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201423772U Expired - Fee Related CN202072779U (en) | 2011-05-09 | 2011-05-09 | Fire hole gas collecting device for aluminum electrolytic cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202072779U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776531A (en) * | 2011-05-09 | 2012-11-14 | 贵阳铝镁设计研究院有限公司 | Burner gas collection apparatus of aluminum electrolysis cell |
| RU186730U1 (en) * | 2018-03-05 | 2019-01-31 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | DEVICE FOR REMOVING GASES OF ALUMINUM ELECTROLYZER |
| CN110656356A (en) * | 2019-11-08 | 2020-01-07 | 陈雨 | Closed gas collecting device for aluminum electrolytic cell |
-
2011
- 2011-05-09 CN CN2011201423772U patent/CN202072779U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776531A (en) * | 2011-05-09 | 2012-11-14 | 贵阳铝镁设计研究院有限公司 | Burner gas collection apparatus of aluminum electrolysis cell |
| RU186730U1 (en) * | 2018-03-05 | 2019-01-31 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | DEVICE FOR REMOVING GASES OF ALUMINUM ELECTROLYZER |
| CN110656356A (en) * | 2019-11-08 | 2020-01-07 | 陈雨 | Closed gas collecting device for aluminum electrolytic cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20140509 |