CN104250840A - Air exhausting device and method of discharged aluminum - Google Patents
Air exhausting device and method of discharged aluminum Download PDFInfo
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- CN104250840A CN104250840A CN201310260488.7A CN201310260488A CN104250840A CN 104250840 A CN104250840 A CN 104250840A CN 201310260488 A CN201310260488 A CN 201310260488A CN 104250840 A CN104250840 A CN 104250840A
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- pipe
- ladle
- out aluminium
- gas barrier
- compressed air
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Abstract
The invention relates to an air exhausting device and method of a discharged aluminum ladle, and is mainly used in the problem of air exhausting methods of the discharged aluminum ladle in electrolytic aluminum smelting industry. The structure of the air exhausting device is as follows: the ladle and ladle air exhausting outlets are connected with a compressed air pipe through an air hose, the compressed air pipe is arranged in an air exhausting pipe on the upper part of an electrolytic tank, an electrolytic tank gas collecting hood is arranged at the bottom of the air exhausting pipe, and the compressed air pipe is provided with nozzles. The air exhausting device has the advantages that: when aluminum in the electrolytic tank is discharged through the device, compressed air of the discharged aluminum ladle is discharged into the upper structure of the electrolytic tank, namely an upper part flue of the electrolytic tank, by preset of hole size and direction of a pipe in the flue, the compressed air is discharged according to certain direction, and the purpose of cleaning up dust stratification in the upper part flue and guiding the furnace internal air flow can be achieved.
Description
Technical field
The present invention relates to a kind of pouring aluminium ladle gas barrier and method, be mainly used in electrolytic aluminum smelting industry, in the method for exhausting problem of pouring aluminium ladle.
Background technology
The main pollutent of electrolytic aluminium factory is fluorochemical, the form of export that fluorochemical is main in electrolysis production process has the uncontrollable discharge of discharge and the potroom in a organized way of chimney, and wherein potroom uncontrollable discharge amount accounts for about 80% of full factory vapor-phase fluoride quantity discharged.And in potroom uncontrollable discharge, when electrolyzer is normally produced, institute's quantity discharged only accounts for about 30% of uncontrollable discharge total amount, and all the other uncontrollable discharge amounts of 70% all at electrolyzer change poles, go out in aluminium and anode scrap process of cooling to produce.
Although fluorochemical is the subsidiary material of electrolysis production indispensability, the fluorochemical be discharged in environment will cause certain harm to local agricultural, livestock industry.The environmental protection standard of present country to electrolytic aluminium factory is more and more stricter, not only define concentration and total amount that electrolytic aluminium factory is discharged in a organized way, also specify the total amount of uncontrollable discharge, on the other hand in order to save production cost, nuisance in recovered flue gas, also should carry out collection to the uncontrollable discharge of electrolytic aluminium factory and reclaim.After deliberation, electrolyzer volatile quantity of fluorochemical when going out aluminium accounts for about 10%, is taken out of when this part wherein goes out aluminium by pressurized air, and a part is owing to leaking from electrolyzer when when going out aluminium, electrolyzer cover plate is opened.COMPREHENSIVE CALCULATING, when going out aluminium, fluorochemical volatile quantity is altogether about 0.03-0.05kg/t-Al.
The pollution of fluorochemical when aluminium to reduce, reclaims useful material wherein, and the method generally adopted at present enters electrolyzer burner hearth inside by going out aluminium pressurized air.Although such method partly can reduce the pollution that pressurized air when aluminium takes fluorochemical out of, but also can produce the following problem: the high-speed compressed air that (1) passes in burner hearth can produce reentrainment of dust, increase mulch and enter electrolyzer upper flue, blocking flue, and then affect electrolyzer gas collection; (2) reentrainment of dust also can cause the airtight efficiency of electrolyzer to reduce, and increases the amount of leakage of electrolyzer; (3) electrolyzer fire box temperature is higher, produces and damages, affect result of use to the sebific duct passed into wherein.
Summary of the invention
The invention provides one go out aluminium gas barrier and method to solve the problems of the technologies described above, its objective is the uncontrollable discharge of the fluorochemical in order to reduce potroom, periodic cleaning upper part of the electrolytic cell flue, not causing again the reentrainment of dust in electrolyzer thorax.
For achieving the above object, the present invention is achieved in that out aluminium gas barrier, structure is as follows: two-man ladle, venting port of two-maing ladle is connected with compressed air pipe by air hose, compressed air pipe is provided with in the vapor pipe of upper part of the electrolytic cell, the bottom of vapor pipe is provided with gas collecting skirt, and compressed air pipe has nozzle.
Venting port of two-maing ladle is located at the top of two-maing ladle, and two-mans ladle between venting port and compressed air pipe and is provided with air hose.
Venting port quantity of two-maing ladle is 1-5.
Compressed air pipe is connected by pot superstructure fast joint by air hose.
Venting port of two-maing ladle is connected with air hose by active joint.
Pot superstructure fast joint is positioned on pot superstructure.
Pot superstructure fast joint quantity is 1-6.
Nozzle quantity is 1-10.
Nozzle opening direction is along vapor pipe air-flow direction of motion.
Nozzle opens the rear end at gas collecting skirt inlet mouth.
The height of gas collecting skirt reduces gradually along air motion direction in vapor pipe.
Go out the method for exhausting of aluminium gas barrier, when it is characterized in that electrolyzer goes out aluminium, first to be sling the electrolyzer of two-maing ladle and moving to and needing aluminium by overhead traveling crane, again venting port of two-maing ladle on two-maing ladle is connected with the pot superstructure fast joint on pot superstructure by air hose, and be connected with compressed air pipe, when going out aluminium, interior pressurized air of two-maing ladle just passes through air hose, compressed air pipe and nozzle spray in vapor pipe along air flow line, flue gas in electrolyzer thorax is through gas collecting skirt, discharge along vapor pipe, and finally enter in Smoke Gas Purity by Electrolysis system.
Advantageous effect of the present invention: (1) increases an active joint on the original venting port of pouring aluminium ladle, is convenient to exhaust of two-maing ladle to be connected with pot superstructure; (2) increase a pot superstructure fast joint at pot superstructure near aluminium inlet, be convenient to be connected with pouring aluminium ladle; (3) on pot superstructure, increase one section of compressed air pipe, compressed air pipe opens multiple nozzle along flue gas flow direction, be convenient to pressurized air and discharge.
By such device when electrolyzer goes out aluminium, the pressurized air of pouring aluminium ladle is entered in pot superstructure and upper part of the electrolytic cell flue, and through being preset in the perforate size and Orientation of pipeline in flue, pressurized air is discharged according to a certain direction, reaches the object of cleaning top flue inner product ash and guiding burner hearth internal gas flow.
The flue gas of pouring aluminium ladle, according to the feature of pouring aluminium ladle, is incorporated in the flue of pot superstructure by the present invention, reduces fluorochemical in flue gas of two-maing ladle when aluminium and, to the pollution in workshop, reclaims useful material wherein.The present invention not only can reduce the uncontrollable discharge of potroom fluorochemical, also can increase the exhaust smoke level of electrolyzer when aluminium, reduces the uncontrollable discharge of electrolyzer further, structure is simple, easy to operate, do not increase redundant work when aluminium, there is higher using value.
Can not occur pressurized air to be passed into electrolyzer thorax and cause reentrainment of dust, cause electrolyzer to reveal; On the other hand pressurized air passes into top flue, can periodic cleaning flue laying dust, reduces the resistance of ducting, increases the airtight efficiency of electrolyzer; And the pressurized air of high-speed motion also plays the effect of drainage.
Accompanying drawing explanation
Fig. 1 is pipeline connection diagram when two-maing ladle out aluminium.
Fig. 2 is the schematic diagram presetting pipeline in upper part of the electrolytic cell flue.
In figure: 1, two-man ladle; 2, to two-man ladle venting port; 3, air hose; 4, pot superstructure fast joint; 5, compressed air pipe; 6, pot superstructure; 7, vapor pipe; 8, electrolyzer thorax; 9, gas collecting skirt; 10, nozzle.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail, but protection scope of the present invention not limit by schematic diagram.
As shown in fig. 1, go out aluminium gas barrier, structure is as follows: two-man ladle 1, venting port 2 of two-maing ladle is connected with compressed air pipe 5 by air hose 3, compressed air pipe 5 is provided with in the vapor pipe 7 of upper part of the electrolytic cell, and the bottom of vapor pipe 7 is provided with gas collecting skirt 9, compressed air pipe 5 has nozzle 10.
Venting port 2 of two-maing ladle be located at two-man ladle 1 top, two-man ladle between venting port 2 and compressed air pipe 5 and be provided with air hose 3.
Venting port 2 quantity of two-maing ladle is 1-5.
Compressed air pipe 5 is connected by pot superstructure fast joint 4 by air hose 3.
Venting port 2 of two-maing ladle is connected with air hose 3 by active joint.
Pot superstructure fast joint 4 is positioned on pot superstructure 6.
Pot superstructure fast joint 4 quantity is 1-6.
Nozzle 10 quantity is 1-10.
Nozzle 10 opening direction is along vapor pipe 7 air motion direction.
Nozzle 10 opens the rear end at gas collecting skirt 9 inlet mouth.
The height of gas collecting skirt 8 reduces gradually along air motion direction in vapor pipe 7.
Go out the method for exhausting of aluminium gas barrier, when electrolyzer goes out aluminium, first sling to two-man ladle by overhead traveling crane and 1 move to the electrolyzer needing aluminium, venting port 2 of two-maing ladle two-maing ladle on 1 is again connected with the pot superstructure fast joint 4 on pot superstructure 6 by air hose 3, and be connected with compressed air pipe 5, when going out aluminium, the pressurized air of two-maing ladle in 1 is just by air hose 3, compressed air pipe 5 and nozzle 10 spray in vapor pipe 7 along air flow line, flue gas in electrolyzer thorax 8 is through gas collecting skirt 9, discharge along vapor pipe 7, and finally enter in Smoke Gas Purity by Electrolysis system.
Containing a large amount of dust in the flue gas of volatilization in electrolyzer thorax 8, flue gas is when gas skirt 9 enters vapor pipe 7, part dust can be deposited on the bottom of vapor pipe 7, timing every day adopts the pressurized air of two-maing ladle in 1 to carry out nozzle, the dust in vapor pipe 7 can be cleared up, avoid blocking smoke exhaust pipe 7, affect the smoke evacuation environment of potroom.The dust that flue is built up or again fall into electrolyzer thorax, or enters Smoke Gas Purity by Electrolysis system with flue gas.
When adopting such method to it also avoid out aluminium, the objectionable impurities of two-maing ladle in pressurized air enters potroom, it also avoid the reentrainment of dust entering two-maing ladle and cause in electrolyzer thorax 8, when the pressurized air sprayed into along air motion direction too increases electrolyzer owing to going out aluminium, the pulse suction of vapor pipe 7, improves gas collecting efficiency.
Claims (12)
1. go out aluminium gas barrier, it is characterized in that structure is as follows: two-man ladle, venting port of two-maing ladle is connected with compressed air pipe by air hose, and compressed air pipe is provided with in the vapor pipe of upper part of the electrolytic cell, the bottom of vapor pipe is provided with gas collecting skirt, and compressed air pipe has nozzle.
2. according to claim 1 go out aluminium gas barrier, the venting port that it is characterized in that two-maing ladle is located at the top of two-maing ladle, and two-mans ladle between venting port and compressed air pipe and is provided with air hose.
3. according to claim 2 go out aluminium gas barrier, the venting port quantity that it is characterized in that two-maing ladle is 1-5.
4. according to claim 2 go out aluminium gas barrier, it is characterized in that compressed air pipe is connected by pot superstructure fast joint by air hose.
5. according to claim 4 go out aluminium gas barrier, the venting port that it is characterized in that two-maing ladle is connected with air hose by active joint.
6. according to claim 4 go out aluminium gas barrier, it is characterized in that pot superstructure fast joint is positioned on pot superstructure.
7. according to claim 6 go out aluminium gas barrier, it is characterized in that pot superstructure fast joint quantity is 1-6.
8. according to claim 1 go out aluminium gas barrier, it is characterized in that nozzle quantity is 1-10.
9. according to claim 8 go out aluminium gas barrier, it is characterized in that nozzle opening direction is for along vapor pipe air-flow direction of motion.
10. according to claim 8 go out aluminium gas barrier, it is characterized in that nozzle is opened in the rear end of gas collecting skirt inlet mouth.
11. according to claim 10 go out aluminium gas barrier, it is characterized in that the height of gas collecting skirt reduces gradually along air motion direction in vapor pipe.
12. method for exhausting going out aluminium gas barrier, when it is characterized in that electrolyzer goes out aluminium, first to be sling the electrolyzer of two-maing ladle and moving to and needing aluminium by overhead traveling crane, again venting port of two-maing ladle on two-maing ladle is connected with the pot superstructure fast joint on pot superstructure by air hose, and be connected with compressed air pipe, when going out aluminium, interior pressurized air of two-maing ladle just passes through air hose, compressed air pipe and nozzle spray in vapor pipe along air flow line, flue gas in electrolyzer thorax is through gas collecting skirt, discharge along vapor pipe, and finally enter in Smoke Gas Purity by Electrolysis system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310260488.7A CN104250840B (en) | 2013-06-27 | 2013-06-27 | Go out aluminium exhaust apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310260488.7A CN104250840B (en) | 2013-06-27 | 2013-06-27 | Go out aluminium exhaust apparatus and method |
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| Publication Number | Publication Date |
|---|---|
| CN104250840A true CN104250840A (en) | 2014-12-31 |
| CN104250840B CN104250840B (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310260488.7A Active CN104250840B (en) | 2013-06-27 | 2013-06-27 | Go out aluminium exhaust apparatus and method |
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| Country | Link |
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| CN (1) | CN104250840B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106149008A (en) * | 2015-04-22 | 2016-11-23 | 沈阳铝镁科技有限公司 | Aluminium cell flue automatic ash removing device |
| CN110042432A (en) * | 2019-05-05 | 2019-07-23 | 中南大学 | The closed gas collecting apparatus of aluminium cell |
| CN110656356A (en) * | 2019-11-08 | 2020-01-07 | 陈雨 | Closed gas collecting device for aluminum electrolytic cell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6800969A (en) * | 1967-01-24 | 1968-07-25 | ||
| CN2883403Y (en) * | 2006-03-18 | 2007-03-28 | 河南豫港龙泉铝业有限公司 | Top Al2O3 feed box waste gas exhausting purifier of electrolyzer |
| CN201280601Y (en) * | 2008-09-05 | 2009-07-29 | 沈阳铝镁设计研究院 | Vent gas direct-exhaustion pipe purification system of aluminum discharging vacuum ladle injector |
| CN201511119U (en) * | 2009-09-10 | 2010-06-23 | 河南中孚实业股份有限公司 | Electrolytic vacuum ladle exhaust device |
-
2013
- 2013-06-27 CN CN201310260488.7A patent/CN104250840B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6800969A (en) * | 1967-01-24 | 1968-07-25 | ||
| CN2883403Y (en) * | 2006-03-18 | 2007-03-28 | 河南豫港龙泉铝业有限公司 | Top Al2O3 feed box waste gas exhausting purifier of electrolyzer |
| CN201280601Y (en) * | 2008-09-05 | 2009-07-29 | 沈阳铝镁设计研究院 | Vent gas direct-exhaustion pipe purification system of aluminum discharging vacuum ladle injector |
| CN201511119U (en) * | 2009-09-10 | 2010-06-23 | 河南中孚实业股份有限公司 | Electrolytic vacuum ladle exhaust device |
Non-Patent Citations (1)
| Title |
|---|
| 王桂芝等: "铝电解槽的压缩空气出铝", 《轻金属》, no. 1, 20 January 1999 (1999-01-20), pages 36 - 38 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106149008A (en) * | 2015-04-22 | 2016-11-23 | 沈阳铝镁科技有限公司 | Aluminium cell flue automatic ash removing device |
| CN110042432A (en) * | 2019-05-05 | 2019-07-23 | 中南大学 | The closed gas collecting apparatus of aluminium cell |
| CN110042432B (en) * | 2019-05-05 | 2020-06-05 | 中南大学 | Closed gas collecting device for aluminum electrolytic cell |
| CN110656356A (en) * | 2019-11-08 | 2020-01-07 | 陈雨 | Closed gas collecting device for aluminum electrolytic cell |
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| Publication number | Publication date |
|---|---|
| CN104250840B (en) | 2016-08-31 |
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