CN101545120B - Device for collecting and purifying anode scrap fluoride and fine dust in aluminum electrolysis workshop - Google Patents
Device for collecting and purifying anode scrap fluoride and fine dust in aluminum electrolysis workshop Download PDFInfo
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- CN101545120B CN101545120B CN2009100201118A CN200910020111A CN101545120B CN 101545120 B CN101545120 B CN 101545120B CN 2009100201118 A CN2009100201118 A CN 2009100201118A CN 200910020111 A CN200910020111 A CN 200910020111A CN 101545120 B CN101545120 B CN 101545120B
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Abstract
The invention relates to a method for collecting and purifying anode scrap fluoride and fine dust in an aluminum electrolysis workshop and a device thereof, belonging to the technical field of fluoride and fine dust collection and purification. The method is characterized in that a sealed gas collecting device is connected with an electrobath sub-pressure fume extractor; and the sealed gas collecting device collects the fluoride and the fine dust generated by anode scraps and carries the fluoride and the fine dust to the electrobath sub-pressure fume extractor for purification and recovery. The device is characterized by comprising the sealed gas collecting device which is positioned in the anode scraps and communicated with the electrobath sub-pressure fume extractor by a fast-connection flange; and a valve of the electrobath sub-pressure fume extractor adjusts the sub-pressure in the sealed gas collecting device. The invention has the advantages that: by connecting the sealed gas collecting device with the electrobath sub-pressure fume extractor, the fluoride and the fine dust generated by the anode scraps undergo effective gas collection, purification and recovery, the disordered discharge of the toxic and harmful fluoride is avoided, and the recovery and the use of the valuable fluoride and fine dust are realized.
Description
One, technical field
The present invention relates to fluorochemical, dust collection purifying method and device thereof, belong to fluorochemical, dust collection purification techniques field.
Two, background technology
At present, domestic electrolytic aluminium factory anode change directly places in the factory building pallet after adopting the high temperature anode scrap being transferred in the groove, villiaumite contacts with the water in air steam and produces a large amount of fluorochemicals on the anodic, according to the relevant test, produce fluorochemical thus and be equivalent to produce in the factory building more than 35% of total fluorochemical, constantly strict with person's environmental protection policy, produce fluorochemical on the high temperature anode scrap of leaving and enter factory building and be not allowed to.In addition, also will produce the part dust on the anode scrap and enter factory building.If anode scrap is cleared up in factory building, this pollution problem will be more serious.
The producer that abroad has utilizes and the anode scrap cooling station is set in the potroom discharges fluorochemical, but because and the change poles position far away, the on-the-spot realization acquires a certain degree of difficulty.
Three, summary of the invention
The objective of the invention is to solve the weak point that prior art exists, provide a kind of and can reduce pollutant emission, realize aluminium electrolysis shop anode scrap fluorochemical, dust collection purifying method and the device thereof of comprehensive utilization of resources.
The present invention places the anode of changing on the electrolyzer in the device of air tight condition, this device links to each other with electrolyzer negative pressure fume extractor, fluorochemical and other dust that anode is produced are brought into electrolysis flue gas purification recovery system, reach a large amount of fluorochemicals of generation when reducing the replacing of potroom anode scrap and the purpose of other dust.
The present invention is achieved through the following technical solutions:
Aluminium electrolysis shop anode scrap fluorochemical of the present invention, dust collection purifying method, special character is airtight gas extractor 1 is linked to each other with electrolyzer negative pressure fume extractor 2, collect fluorochemical, the dust that anode anode scrap 3 produces by airtight gas extractor 1, fluorochemical and dust are taken in the electrolyzer negative pressure fume extractor 2 purify recovery;
Aluminium electrolysis shop anode scrap fluorochemical, dust collection refining plant, special character is to comprise the airtight gas extractor 1 that is used to place anode anode scrap 3, airtight gas extractor 1 and potroom electrolyzer negative pressure fume extractor 2 are connected, by fast connection orchid 4 airtight gas extractor 1 is connected with electrolyzer negative pressure fume extractor 2, by the negative pressure of the airtight gas extractor of valve regulated 1 inside of electrolyzer negative pressure fume extractor 2;
Described airtight gas extractor 1 is made the airtight gas extractor integrated structure of pallet 5 and top, and pallet 5 designs are complementary with transportation means such as anode delivery car or overhead traveling crane handlings, but the airtight gas extractor in top is made ground moving;
Described airtight gas extractor 1 is made monoblock type;
When described airtight gas extractor 1 open top, anode scrap place airtight gas extractor, be convenient to anode rod 7 and enter the location;
Described airtight gas extractor 1 is provided with the side door that movable gas collection cover plate 6 constitutes, and is convenient to that anode scrap is put into and the on-the-spot clear utmost point;
Described airtight gas extractor 1 can satisfy once places 1 or polylith anode;
Described airtight gas extractor 1 main body adopts nonferromugnetic material to manufacture, as aluminum alloy materials etc.
The present invention utilizes airtight gas extractor that fluorochemical and the dust that anode scrap produces carried out gas collection, and the electrolysis flue gas purification recovery system that constitutes by electrolyzer negative pressure fume extractor purifies recovery with the gas collection thing.According to the concentration 0.6Kg/t-A1 meter of potroom fluorochemical, fluorochemical gas collection and purification overall efficiency 95% are that anode change produces by 0.21Kg/t-A1, and then national annual 1500 ten thousand tons of primary aluminum reduce fluorochemical and discharge nearly 3000 tons.
Aluminium electrolysis shop anode scrap fluorochemical of the present invention, dust collection purifying method and device thereof, advantage is, the electrolysis flue gas that adopts airtight gas extractor and electrolyzer negative pressure fume extractor to constitute purifies recovery system and links to each other, fluorochemical and dust that anode scrap is produced obtain effective gas collection, purification, recovery, avoided of the influence of poisonous and harmful fluorochemical uncontrollable discharge, realized the recycling of valuable fluorochemical and dust environment.
Four, description of drawings
Fig. 1: aluminium electrolysis shop anode scrap fluorochemical of the present invention, dust collection refining plant structural representation.
Five, embodiment
Following with reference to accompanying drawing, provide the specific embodiment of the present invention, be used for formation of the present invention is further specified.
The aluminium electrolysis shop anode scrap fluorochemical of present embodiment, dust collection purifying method and device thereof are with reference to figure 1, and anode delivery car is adopted in the carrying of electrolytic series anode, utilize the pallet 5 of anode delivery car to carry out the airtight gas extractor design of built-up type.The airtight gas extractor 1 in top is designed to can be at the sub-device of belt wheel of ground promotion, can promote to make up with pallet, top airtight gas extractor top side portion pipeline is established fast connection orchid 4, combine with electrolyzer upper flue flange, the airtight gas extractor in top is established the side door that packaged type gas collection cover plate 6 constitutes, and is convenient to anode and puts into anode and clear up.After anode is put into this airtight gas extractor 1, open smoke exhaust pipe valve on the electrolyzer, high temperature villiaumite and water in air steam reaction are produced fluorochemical and are inhaled into smoke discharging pipe with other dust on the anode, after enter electrolyzer negative pressure fume extractor 2, the oxidized aluminium absorption of fluorochemical forms fluorinated alumina, fluorinated alumina and dust are filtered through cloth bag, finish the purification recovery that anode change produces fluorochemical and dust.
Embodiment 2
The aluminium electrolysis shop anode scrap fluorochemical of present embodiment, dust collection purifying method and device thereof, split type airtight gas extractor is adopted in electrolytic series anode scrap cooling cleaning, before the change poles this device is moved to the change poles electrolyzer and be close to the electrolyzer aluminium inlet, connect fast connection orchid 4, to newly change anode scrap and put into airtight gas extractor 1, open and adjust the corresponding valve of electrolyzer smoke discharging pipe and make the satisfied smoke evacuation of negative pressure requirement in the airtight gas extractor 1, open respective episode gas hood plate 6, the aluminum oxide face-piece is cleared up on the antianode, shut the gas collection cover plate, after treating the anode scrap cooling, turn off the smoke exhaust pipe valve.The a large amount of dust that produce when anode produces fluorochemical and anode cleaning in this process recycle by electrolyzer negative pressure fume extractor 2.Afterwards, unload and change up the connection orchid, the airtight gas extractor in top is moved on near the leave from office change poles groove, dress anode scrap tray 5 is transported by anode delivery car.
Claims (3)
1. aluminium electrolysis shop anode scrap fluorochemical, dust collection refining plant, comprise the airtight gas extractor (1) that is used to place anode anode scrap (3), airtight gas extractor (1) and potroom electrolyzer negative pressure fume extractor (2) are connected, by fast connection orchid (4) airtight gas extractor (1) is connected with electrolyzer negative pressure fume extractor (2), electrolyzer negative pressure fume extractor (2) is provided with the valve of regulating airtight gas extractor (1) internal negative pressure;
Airtight gas extractor (1) is linked to each other with electrolyzer negative pressure fume extractor (2), collect fluorochemical, the dust that anode anode scrap (3) produces, fluorochemical and dust are taken in the electrolyzer negative pressure fume extractor (2) purify recovery by airtight gas extractor (1);
It is characterized in that
Described airtight gas extractor (1) is made the airtight gas extractor integrated structure of pallet (5) and top, and pallet (5) design is complementary with anode delivery car or overhead traveling crane handling, and the airtight gas extractor in top is made ground moving;
When described airtight gas extractor (1) open top, anode scrap place airtight gas extractor, be convenient to anode rod (7) and enter the location;
Described airtight gas extractor (1) is provided with the side door that movable gas collection cover plate (6) constitutes, and is convenient to that anode scrap is put into and on-the-spot cleaning.
2. according to the described aluminium electrolysis shop anode scrap of claim 1 fluorochemical, dust collection refining plant, it is characterized in that described airtight gas extractor (1) satisfies once to place 1 or polylith anode anode scrap.
3. according to the described aluminium electrolysis shop anode scrap of claim 1 fluorochemical, dust collection refining plant, it is characterized in that described airtight gas extractor (1) main body adopts nonferromugnetic material to manufacture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100201118A CN101545120B (en) | 2009-03-24 | 2009-03-24 | Device for collecting and purifying anode scrap fluoride and fine dust in aluminum electrolysis workshop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100201118A CN101545120B (en) | 2009-03-24 | 2009-03-24 | Device for collecting and purifying anode scrap fluoride and fine dust in aluminum electrolysis workshop |
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| Publication Number | Publication Date |
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| CN101545120A CN101545120A (en) | 2009-09-30 |
| CN101545120B true CN101545120B (en) | 2010-12-29 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102397866A (en) * | 2010-09-09 | 2012-04-04 | 东北大学 | Device and method for collecting thermal anode scrap cooling pollutants of aluminum electrolytic cell |
| CN102495006A (en) * | 2011-11-22 | 2012-06-13 | 中国铝业股份有限公司 | Method for detecting non-anode effect CF4 |
| CN103849899A (en) * | 2013-05-10 | 2014-06-11 | 洛阳宇航重工机械有限公司 | Forcible dust collection device for electrolyte cleaning system |
| CN104988538B (en) * | 2015-06-30 | 2017-06-09 | 贵州顺安机电设备有限公司 | Dust collection cover |
| CN105755506B (en) * | 2016-05-13 | 2018-10-16 | 邱岳 | Aluminium cell replaces anode system and its replacing options automatically |
| CN109423662A (en) * | 2017-08-28 | 2019-03-05 | 沈阳铝镁设计研究院有限公司 | The cooling of aluminum electrolytic residual electrode carbon block and the device and application method for collecting exhaust gas |
| CN109518227B (en) * | 2017-09-20 | 2020-10-23 | 沈阳铝镁设计研究院有限公司 | Split type anode scrap carbon block cooling device and using method |
| CN107490300A (en) * | 2017-09-30 | 2017-12-19 | 云南金领科技有限公司 | Aluminium electroloysis high-temp solid discarded object cooling device |
| CN110846686A (en) * | 2018-08-20 | 2020-02-28 | 沈阳铝镁设计研究院有限公司 | Hot anode scrap flue gas collecting device of prebaked anode aluminum electrolytic cell |
| CN110042432B (en) * | 2019-05-05 | 2020-06-05 | 中南大学 | Closed gas collecting device for aluminum electrolytic cell |
| CN112301377A (en) * | 2019-07-30 | 2021-02-02 | 沈阳铝镁设计研究院有限公司 | Automatic push-and-pull device of anode scrap cooling box |
| CN110453249A (en) * | 2019-09-10 | 2019-11-15 | 东北大学设计研究院（有限公司） | A kind of pot tending machine movable negative-pressure dust cleaning system |
-
2009
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