CN201309970Y - Large pre-bake anode aluminum electrolysis cell two-exhaust tube system - Google Patents
Large pre-bake anode aluminum electrolysis cell two-exhaust tube system Download PDFInfo
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- CN201309970Y CN201309970Y CNU2008202188157U CN200820218815U CN201309970Y CN 201309970 Y CN201309970 Y CN 201309970Y CN U2008202188157 U CNU2008202188157 U CN U2008202188157U CN 200820218815 U CN200820218815 U CN 200820218815U CN 201309970 Y CN201309970 Y CN 201309970Y
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Abstract
A large pre-bake anode aluminum electrolysis cell two-exhaust tube system comprises an electrolysis cell smoke outlet tube, an insulated node, two exhaust tubes and an electric adjusting butterfly valve, which is characterized in that (1) the smoke outlet is provided with a two-exhaust tube system; the exhaust tubes are divided into a main exhaust branch pipe and an auxiliary exhaust branch pipe which are connected with the electrolysis cell smoke outlet tube via a three-way smoke tube and the insulated node; (2) a flexible compensator is provided between the main exhaust branch tube and the three-way smoke tube; (3) a rigid insulation node is provided between the auxiliary exhaust branch pipe and the three-way smoke tube; the electric adjusting butterfly valve is provided among the main and the auxiliary exhaust tubes and the three-way smoke tube; the other ends of the main and the auxiliary exhaust branch pipe are respectively connected with the main and the auxiliary exhaust total tubes outside electrolysis shop. Since the auxiliary exhaustion system has high exhaustion volume, the large pre-bake anode aluminum electrolysis cell two-exhaust tube system can effectively control and stabilize negative pressure condition in cell cover board, resolve the smoke leakage problem when opens the cell cover board of the electrolysis cell, and improve gas collection efficiency of electrolysis cell.
Description
Technical field
The utility model belongs to the collection technique field of aluminium cell bubbing, is specifically related to the structure of the double smoke pipe of a kind of large-sized prebaked cell for aluminum-reduction system.
Technical background
The fume exhaust system of modern industry aluminium cell is single smoke pipe system.The motorized adjustment butterfly valve is housed on the smoke exhaust pipe, and then adjusts the exhaust smoke level of electrolyzer, and the smoke discharge amount of each electrolyzer of balance.Open technological operations such as the part cell cover plate is changed anode, gone out aluminium, the processing of limit portion at electrolyzer, or when electrolyzer generation anode effect, the electric butterfly valve of regulating on single smoke pipe increases its exhaust smoke level, but the subnormal ambient in the groove of this moment has had very big variation when more normally producing, the uncontrollable discharge of flue gas increases, cause a certain amount of electrolysis flue gas to escape, make the gas collecting efficiency of electrolyzer further to improve, and worsened the Working environment of potroom, influenced workman's physical and mental health.China improves constantly the standard of electrolyzer gas collecting efficiency, purification efficiency and the smoke stack emission substrate concentration of aluminium electrolytic industry in recent years, therefore how electrolytic aluminium factory further improves the gas collecting efficiency of aluminium cell, and the purification efficiency that reduces the uncontrollable discharge of flue gas and how to improve electrolysis flue gas is the electrolytic aluminium factory urgent problem.
Summary of the invention
The purpose of this utility model is, changes the single row of tubes system of present Chinese large-sized prebaked cell for aluminum-reduction into double smoke pipe system, thereby the flue gas when solving electrolyzer and carrying out technological operation escapes problem, and can further improve the gas collecting efficiency of electrolyzer.
The double smoke pipe of large-sized prebaked cell for aluminum-reduction of the present utility model system comprises electrolyzer smoke outlet tube, insulation joint, smoke exhaust pipe and motorized adjustment butterfly valve, it is characterized in that:
(1) is provided with two smoke pipe systems at exhanst gas outlet, smoke exhaust pipe is divided into main smoke evacuation arm and secondary smoke evacuation arm, by three ventilating smoke tubes and insulation joint and electrolyzer exhanst gas outlet pipe coupling;
(2) main smoke evacuation arm is provided with the flexible compensation device with between three ventilating smoke tubes;
(3) secondary smoke evacuation arm is provided with hard insulation joint with between three ventilating smoke tubes.
The double smoke pipe of large-sized prebaked cell for aluminum-reduction of the present utility model system, its major and minor smoke evacuation arm all is equipped with motorized adjustment butterfly valve separately respectively.
The double smoke pipe of large-sized prebaked cell for aluminum-reduction of the present utility model system, its major and minor smoke evacuation arm is connected respectively on the outer major and minor smoke evacuation house steward of separately potroom.
Double smoke pipe of the present utility model system also is furnished with different induced draft fan systems separately and carries out independent control with different Controlling System.When the aluminium cell ordinary production, electrolysis flue gas is discharged to the main smoke evacuation house steward workshop outside by main smoke evacuation arm, and the main smoke evacuation arm of every platform trough is connected with insulation joint with main smoke evacuation house steward, and one section flexible compensation device is installed again, and playing stretches reaches the insulating effect.Also is furnished with insulation joint to play the insulating effect on the secondary smoke evacuation smoking pipe.The arm flange connections adopts asbestos twine to make gasket, is installed in the inside and outside both sides of flange bolt.In order to adjust the exhaust smoke level of electrolyzer, the smoke discharge amount of each electrolyzer of balance is equipped with electric butterfly valve on the main smoke evacuation arm of electrolyzer.Establish pressure tap on the smoke exhaust pipe, be used for placing piezometric tube, guarantee the balance of flow.When electrolyzer is carried out technological operation, the part cell cover plate is opened, close main fume exhaust system this moment, the electric butterfly valve that is located on the independent secondary flue gas emission is opened, because when being every platform trough ordinary production 2～5 times of the exhausting amount of secondary fume exhaust system, so the negative pressure condition in the electrolyzer cover plate can be controlled better, reduce the uncontrollable discharge of flue gas, reduce escaping of electrolysis flue gas, improve the gas collecting efficiency of natural gas gathering system, improve the operating environment of potroom.The configuration of secondary flue gas emission, it mainly acts on is negative pressure condition in the groove cover when stablize electrolyzer and opening cell cover plate and carry out technological operation, control and the flue gas uncontrollable discharge and the flue gas that reduce owing to opening cell cover plate escape.
Existing large-sized prebaked cell for aluminum-reduction all adopts single smoke pipe system, the double smoke pipe of large-sized prebaked cell for aluminum-reduction of the present utility model system compares its advantage with existing single smoke pipe system: carry out because fume emission during with the electrolyzer ordinary production and the fume emission when carrying out technological operation separate, make the fume emission of electrolyzer when carrying out technological operation be controlled better.Adopt the main flue gas blowdown system to carry out the discharging of electrolysis flue gas during the electrolyzer ordinary production, the secondary flue gas emission of this moment is in closing condition, when electrolyzer is opened the part cell cover plate and is carried out technological operation, the open auxiliary flue gas emission, and the main flue gas blowdown system is closed.Because when the exhausting amount of secondary flue gas emission is separate unit groove ordinary production 2～5 times of main flue gas blowdown system exhausting amount, so just, can solve the uncontrollable discharge problem of the flue gas when opening the part cell cover plate better, significantly reduced escaping of electrolysis flue gas, can further improve the gas collecting efficiency of electrolyzer simultaneously, for the raising of electrolysis flue gas purification efficiency provides guarantee, improve the worker laboring environment greatly.
Description of drawings
Fig. 1 is the structural representation of the double smoke pipe of aluminium cell of the present utility model system.Among the figure: 1 main smoke evacuation arm; 2 secondary smoke evacuation arms; 3 three ventilating smoke tubes; 4 electrolyzer smoke outlet tubes; The main outward smoke evacuation house steward of 5 potrooms; The outer secondary smoke evacuation house steward of 6 potrooms; 7 main smoke evacuation arm motor-driven control valves; 8 secondary smoke evacuation arm motor-driven control valves; 9 hard insulation joints; 10 flexible compensation devices; 11 flanges.
Embodiment
Below in conjunction with accompanying drawing the double smoke pipe of large-scale pre-baked aluminum electrolysis cell of the present utility model system is described further and replenishes.
As shown in Figure 1, the double smoke pipe of the utility model large-scale pre-baked aluminum electrolysis cell system is by major and minor smoke evacuation arm 1,2, and potroom is major and minor smoke evacuation house steward 5,6 outward, motorized adjustment butterfly valve 7,8, compositions such as insulation joint 9 and flexible compensation device 10.Induced draft fan system and Controlling System that major and minor flue gas emission is furnished with are separately carried out independent control.Specific implementation method is when the electrolyzer ordinary production, only opens the electric butterfly valve 7 of main smoke evacuation arm, and the flue gas that electrolysis produces enters the outer main smoke evacuation house steward 5 of potroom by main smoke evacuation arm 1, enters the electrolysis flue gas purification system again and carries out purifying treatment.When electrolyzer is opened the part cell cover plate and is carried out technological operation, the electric butterfly valve 7 of main smoke evacuation arm cuts out, and the electric butterfly valve 8 on the open auxiliary smoke evacuation arm, the electrolysis flue gas of this moment enters the outer pair smoke evacuation house steward 6 of potroom by pair smoke evacuation arm 2, enters flue gas purification system again and carries out purifying treatment.The electrolyzer smoke outlet tube plays the insulating effect for linking to each other by hard insulation joint 9 between circumference adapter bonnet 4 and three ventilating smoke tubes 3.Three ventilating smoke tubes 3 are connected with hard insulation joint 9 between the arm 1 with main the smoke evacuation, and case is adorned one section flexible compensation device 10 again, playing flexible and insulating effect.Three ventilating smoke tubes 3 are connected with hard insulation joint 9 between the arm 2 with secondary the smoke evacuation, play the insulating effect.Because when the exhausting amount of secondary fume exhaust system is separate unit groove ordinary production 2～5 times of the exhausting amount, therefore can control the negative pressure condition in the cell cover plate when operating well with stabilization process, flue gas when the solution electrolyzer is opened cell cover plate escapes problem, improves the gas collecting efficiency of electrolyzer.
Claims (5)
1. the double smoke pipe of a large-sized prebaked cell for aluminum-reduction system comprises electrolyzer smoke outlet tube, insulation joint, smoke exhaust pipe and motorized adjustment butterfly valve, it is characterized in that:
(1) is provided with two smoke pipe systems at exhanst gas outlet, smoke exhaust pipe is divided into main smoke evacuation arm and secondary smoke evacuation arm, by three ventilating smoke tubes and insulation joint and electrolyzer exhanst gas outlet pipe coupling;
(2) main smoke evacuation arm is provided with the flexible compensation device with between three ventilating smoke tubes;
(3) secondary smoke evacuation arm is provided with hard insulation joint with between three ventilating smoke tubes.
2. by the double smoke pipe of the described large-sized prebaked cell for aluminum-reduction of claim 1 system, it is characterized in that said main smoke evacuation arm is mounted with the motorized adjustment butterfly valve with between three ventilating smoke tubes.
3. by the double smoke pipe of the described large-sized prebaked cell for aluminum-reduction of claim 1 system, it is characterized in that said secondary smoke evacuation arm is mounted with the motorized adjustment butterfly valve with between three ventilating smoke tubes.
4. by the double smoke pipe of the described large-sized prebaked cell for aluminum-reduction of claim 1 system, it is characterized in that said main smoke evacuation arm is connected on the outer main smoke evacuation house steward of potroom.
5. by the double smoke pipe of the described large-sized prebaked cell for aluminum-reduction of claim 1 system, it is characterized in that said secondary smoke evacuation arm is connected on the outer pair smoke evacuation house steward of potroom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202188157U CN201309970Y (en) | 2008-10-31 | 2008-10-31 | Large pre-bake anode aluminum electrolysis cell two-exhaust tube system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202188157U CN201309970Y (en) | 2008-10-31 | 2008-10-31 | Large pre-bake anode aluminum electrolysis cell two-exhaust tube system |
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| Publication Number | Publication Date |
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| CN201309970Y true CN201309970Y (en) | 2009-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202188157U Expired - Fee Related CN201309970Y (en) | 2008-10-31 | 2008-10-31 | Large pre-bake anode aluminum electrolysis cell two-exhaust tube system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094218A (en) * | 2009-12-11 | 2011-06-15 | 贵阳铝镁设计研究院 | Pore plate regulating valve for smoke discharging branch pipes of electrolysis bath |
| CN102312253A (en) * | 2010-06-29 | 2012-01-11 | 沈阳铝镁设计研究院有限公司 | Double-flue pipe gas-collecting pipeline system of aluminum electrolytic tank and control method |
| CN102485963A (en) * | 2010-12-02 | 2012-06-06 | 沈阳铝镁设计研究院有限公司 | Structure for controlling wind pressure balance of aluminium electrolysis-based purification flue gas pipeline |
| CN103201414A (en) * | 2010-09-17 | 2013-07-10 | 阿尔斯通技术有限公司 | Pot heat exchanger |
| CN103591598A (en) * | 2013-11-18 | 2014-02-19 | 中国海洋石油总公司 | T-shaped smoke channel of offshore platform |
| CN105463507A (en) * | 2014-09-22 | 2016-04-06 | 沈阳铝镁设计研究院有限公司 | Method and device for electrolytic tank smoke discharging pipeline valve electrostatic protection grounding of aluminum electrolytic plant |
| CN106868549A (en) * | 2017-03-17 | 2017-06-20 | 中铝国际工程股份有限公司 | Communication type pair smoke pipe used for aluminium electrolysis |
| CN107858704A (en) * | 2017-11-14 | 2018-03-30 | 中冶天工集团有限公司 | A kind of insulating method of aluminium cell smoking pipe |
| CN113481543A (en) * | 2021-08-04 | 2021-10-08 | 贵阳铝镁设计研究院有限公司 | Integral forming smoke exhaust device and method for cathode of electrolytic cell |
-
2008
- 2008-10-31 CN CNU2008202188157U patent/CN201309970Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094218A (en) * | 2009-12-11 | 2011-06-15 | 贵阳铝镁设计研究院 | Pore plate regulating valve for smoke discharging branch pipes of electrolysis bath |
| CN102312253A (en) * | 2010-06-29 | 2012-01-11 | 沈阳铝镁设计研究院有限公司 | Double-flue pipe gas-collecting pipeline system of aluminum electrolytic tank and control method |
| US9360145B2 (en) | 2010-09-17 | 2016-06-07 | Alstom Technology Ltd | Pot heat exchanger |
| CN103201414A (en) * | 2010-09-17 | 2013-07-10 | 阿尔斯通技术有限公司 | Pot heat exchanger |
| US9758883B2 (en) | 2010-09-17 | 2017-09-12 | General Electric Technology Gmbh | Pot heat exchanger |
| CN103201414B (en) * | 2010-09-17 | 2017-09-22 | 通用电器技术有限公司 | Pot heat exchanger |
| CN102485963A (en) * | 2010-12-02 | 2012-06-06 | 沈阳铝镁设计研究院有限公司 | Structure for controlling wind pressure balance of aluminium electrolysis-based purification flue gas pipeline |
| CN103591598A (en) * | 2013-11-18 | 2014-02-19 | 中国海洋石油总公司 | T-shaped smoke channel of offshore platform |
| CN105463507A (en) * | 2014-09-22 | 2016-04-06 | 沈阳铝镁设计研究院有限公司 | Method and device for electrolytic tank smoke discharging pipeline valve electrostatic protection grounding of aluminum electrolytic plant |
| CN105463507B (en) * | 2014-09-22 | 2017-12-15 | 沈阳铝镁设计研究院有限公司 | The method and device of aluminium electrolysis shop electrolytic cell smoke discharging pipe valve anti-static grounding |
| CN106868549A (en) * | 2017-03-17 | 2017-06-20 | 中铝国际工程股份有限公司 | Communication type pair smoke pipe used for aluminium electrolysis |
| CN107858704A (en) * | 2017-11-14 | 2018-03-30 | 中冶天工集团有限公司 | A kind of insulating method of aluminium cell smoking pipe |
| CN113481543A (en) * | 2021-08-04 | 2021-10-08 | 贵阳铝镁设计研究院有限公司 | Integral forming smoke exhaust device and method for cathode of electrolytic cell |
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| Date | Code | Title | Description |
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| 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: 20090916 Termination date: 20101031 |