CN101615870B - Aluminium cell air duct wasteheat utilizing method and device - Google Patents
Aluminium cell air duct wasteheat utilizing method and device Download PDFInfo
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- CN101615870B CN101615870B CN2008100315932A CN200810031593A CN101615870B CN 101615870 B CN101615870 B CN 101615870B CN 2008100315932 A CN2008100315932 A CN 2008100315932A CN 200810031593 A CN200810031593 A CN 200810031593A CN 101615870 B CN101615870 B CN 101615870B
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- electrothermal module
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Abstract
The invention relates to an aluminium cell air duct wasteheat utilizing method. The outer wall of a vent discharge duct on the upper part of an aluminium cell is provided with a thermoelectric module; the hot end of the thermoelectric module is connected with the outer wall of the vent discharge duct, while the cold end is cooled through air cooling or by a cyclic heat-conducting medium; and the heat energy in the vent discharge duct is converted into electric energy through the thermoelectric module, and the electric energy is output through a lead-out end of the vent discharge duct. The invention provides the aluminium cell air duct wasteheat utilizing method and an aluminium cell air duct wasteheat utilizing device for effectively utilizing and converting the heat energy on the vent discharge duct on the upper part of the aluminium cell.
Description
Technical field
The present invention relates to a kind of aluminium cell airduct used heat and utilize method.
Background technology
China's electrolysis production metallic aluminium process, adopt the prebaked anode aluminum electrolyzation technology mostly, electrolysis temperature is about 950 ℃, the average power utilance of aluminium cell is about 48%, the temperature that aluminium cell overdraught discharge duct is about 150 ℃, energy is dispersed in the environment with the form of used heat, causes huge energy waste, and environment is caused thermal pollution.Up to the present report to the industrial utilization of this used heat is not arranged as yet.
Summary of the invention
Purpose of the present invention aims to provide a kind of aluminium cell airduct used heat that the heat energy on the aluminium cell overdraught discharge duct can be effectively utilized and transforms and utilizes method and device.
The objective of the invention is to realize by following proposal.
Aluminium cell overdraught discharge duct outer wall is provided with electrothermal module, the hot junction vent discharge duct outer wall of electrothermal module links to each other, the cold junction of electrothermal module cools off by cooling device, and the heat energy in the vent discharge duct is converted into electric energy by electrothermal module, and by its exit output.
The preferred work temperature difference of electrothermal module is 60～180 ℃, sends voltage 3～4.5V, electric current 0.5～3A.
Electrothermal module hot junction working temperature is for being preferably 150～200 ℃.The preferred temperature of cold junction is 5～45 ℃.
The hot junction of electrothermal module is fixed on the glass fabric with epoxy resin, and glass fabric is coated on the vent discharge duct outer wall again.
Described cooling device comprises air-cooled or cools off by the circulating heat conduction medium.
Described circulating heat conduction medium cooling is that metal tube is closely contacted with the electrothermal module cold junction, and metal tube is arranged along the vent discharge duct axially parallel, feeds heat-conducting medium in the metal tube.
Described heat-conducting medium is water or fire retardant insulating oil.When heat-conducting medium was water, the water that gained is 40～50 ℃ can be used as for domestic water, recycled after the cooling of fire retardant insulating oil.
The outside heat-insulating material that coats of metal tube, outermost layer is fixed with glass fabric.
Air-cooled method of the present invention is: the heat pipe heat radiation device is arranged on the cold junction of electrothermal module, and blast pipe connects air blast, and the blast pipe puff prot is installed in the heat pipe heat radiation device over against the position.
By the output line of required output voltage series connection electrothermal module, as needs output 6～9V, then per two piece modules series connection is as an output unit, and parallel connection increases its output current then.
Electrothermal module adopts the series and parallel mode to reach required direct voltage scope, and parallel way reaches required electric current.
The area of electrothermal module accounts for 80%～95% of pipeline area.
Output voltage adopts the voltage stabilizing circuit output burning voltage of market-ripe.
The output electric energy can be stored in secondary cell or be directly used in aluminium electroloysis and use.
The operation principle of electrothermal module: every block of thermoelectric material is formed to a hundreds of thermoelectric unit by tens, as shown in Figure 1, each thermoelectric unit is made up of a p N-type semiconductor N and a n N-type semiconductor N, and as shown in Figure 2, cold junction connects low-temperature space, the hot junction connects the high-temperature region, cold junction p N-type semiconductor N is connected by conductor with the n N-type semiconductor N, and the hot junction connects external circuit, when there are the temperature difference in hot junction and cold junction, the p in hot junction then, n semiconductor external lead wire is outwards exported electric energy.Because single thermoelectric unit voltage is lower, need to improve its output voltage by series connection.
Can be used for one of square law device of the present invention is: by being connected in sequence around the inner layer glass fiber layer of cloth, electrothermal module layer, metal tube layer, insulation material layer, the glass outer fiber layer of cloth that are coated on the aluminium cell overdraught discharge duct; The hot junction of the electrothermal module in the electrothermal module layer is fixed on the glass fabric of internal layer; The metal tube layer is closely contacted with the cold junction of electrothermal module by the metal tube that several are connected with heat-conducting medium, and several metal tubes are arranged along the vent discharge duct axially parallel.
Can be used for two of square law device of the present invention is: aluminium cell overdraught discharge duct outer wall is provided with electrothermal module, the hot junction of electrothermal module links to each other with the vent discharge duct outer wall, the cold junction of electrothermal module is connected with the heat pipe heat radiation device, blast pipe connects air blast, and the blast pipe puff prot is installed in the heat pipe heat radiation device over against the position.The blast pipe that connects air blast can be that many blast pipes center on vent discharge duct, or a blast pipe is solenoid type around vent discharge duct.
The used heat of aluminium cell airduct of the present invention utilize method effectively the heat energy in the aluminium cell airduct effectively utilize, being converted into electric energy continues to wait in other link with producing, be that a kind of of the energy comprehensively effectively utilized, particularly energy shortage at present, saving to greatest extent and utilizing the energy is the problem that each enterprise all will face and solve, and method of the present invention is being exactly this innovation on the one hand.
Description of drawings
Fig. 1 is the electrothermal module cell schematics.
Fig. 2 is the structure side view that the vent discharge duct on aluminium cell top is installed the device of electrothermal module and the cooling of employing heat-conducting medium.
Fig. 3 is Fig. 2 Unit Installation stereogram.
Fig. 4 is the structural representation that the vent discharge duct on aluminium cell top is installed electrothermal module and employing air cooling equipment
Illustrate
1-inner layer glass fiber layer of cloth, 2-electrothermal module layer, 3-metal tube layer, 4-insulation material layer, 5-glass outer fiber layer of cloth, 6-vent discharge duct, 7-heat pipe heat radiation device, 8-blast pipe, 9-air blast.
Embodiment
Following examples are intended to illustrate the present invention rather than limitation of the invention further.The present invention can implement by described any mode of summary of the invention.
At a 240kA prebaked cell for aluminum-reduction, produce a large amount of high temperature CO in the electrolytic tank electrolysis process
2Deng gas, collect by vent discharge duct is unified, every 3.6m of vent discharge duct, but caliber 0.5m begins to increase with every amplitude ladder that increases 0.1m, up to 1.5m.About 150 ℃ of pipe surface temperature.With average PIPE DIAMETER CALCULATION:
Vent discharge duct area: 3.6*10*2*3.14*0.5=113m
2
Every thermoelectric generation module: 40*40*4mm
3
On average to utilize 70% of its surface area, 113*70%/0.0016=4.9*10 is installed
4(sheet)
With the hot junction working temperature is that 3.14～4.71*3.6m is fixed in epoxy resin in the hot junction of 180 ℃ electrothermal module 2 (the Anyang Modern Education Technology TECI-031100T125 of service centre)
2The glass fabric 1 of innermost layer on, be coated on again around the aluminium cell overdraught discharge duct 6, make contact good.
Press the output line of the output voltage series connection electrothermal module of required design, as needs output 6～9V, then per two piece modules are connected as an output unit, its output current of increase in parallel then.
Withstand voltage corrosion resistant several metal tubes 3 are arranged along the air pipe axially parallel, as shown in Figure 3, closely contact with the cold junction of electrothermal module, make good heat transfer, and the outside heat-insulating material 4 that coats is fixing with outermost layer glass fabric 5.
Feed room temperature water or fire retardant insulating oil in the metal tube, according to the climatic environment difference, feeding coolant temperature is 5～40 ℃.
When heat-conducting medium was water, the water that gained is 40～50 ℃ can be used as for domestic water, recycled after the cooling of fire retardant insulating oil.
Electrothermal module adopts the series and parallel mode to reach required direct voltage scope, and parallel way reaches required electric current.
Output voltage adopts the voltage stabilizing circuit output burning voltage of market-ripe, can adopt the constant-current stabilizer of aluminum current electrolysis tank to stablize its electric current.The output electric energy can be stored in secondary cell or be directly used in aluminium electroloysis and use.
Claims (6)
1. an aluminium cell airduct used heat utilizes method, it is characterized in that, aluminium cell overdraught discharge duct outer wall is provided with electrothermal module, the hot junction of electrothermal module links to each other with the vent discharge duct outer wall, the cold junction of electrothermal module cools off by cooling device, heat energy in the vent discharge duct is converted into electric energy by electrothermal module, and by its exit output; The work temperature difference of electrothermal module is 60～180 ℃; Electrothermal module send voltage 3～4.5V, electric current 0.5～3A; Electrothermal module hot junction working temperature is 150～200 ℃, and the cold junction working temperature is 5～45 ℃; Described cooling device is by the cooling of circulating heat conduction medium, and described circulating heat conduction medium cooling is that metal tube is closely contacted with the electrothermal module cold junction, and metal tube is arranged along the vent discharge duct axially parallel, feeds heat-conducting medium in the metal tube.
2. a kind of aluminium cell airduct used heat according to claim 1 utilizes method, it is characterized in that the hot junction of electrothermal module is fixed on the glass fabric with epoxy resin, and glass fabric is coated on the vent discharge duct outer wall again.
3. a kind of aluminium cell airduct used heat according to claim 1 utilizes method, it is characterized in that, described heat-conducting medium is water or fire retardant insulating oil.
4. a kind of aluminium cell airduct used heat according to claim 1 utilizes method, it is characterized in that, and the outside heat-insulating material that coats of metal tube, outermost layer is fixed with glass fabric.
5. a kind of aluminium cell airduct used heat according to claim 1 utilizes method, it is characterized in that the area of electrothermal module accounts for 80%～95% of pipeline area.
6. aluminium cell airduct used heat use device, it is characterized in that, by being connected in sequence around the inner layer glass fiber layer of cloth, electrothermal module layer, metal tube layer, insulation material layer, the glass outer fiber layer of cloth that are coated on the aluminium cell overdraught discharge duct; The hot junction of the electrothermal module in the electrothermal module layer is fixed on the glass fabric of internal layer; The metal tube layer is closely contacted with the cold junction of electrothermal module by the metal tube that several are connected with heat-conducting medium, and several metal tubes are arranged along the vent discharge duct axially parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100315932A CN101615870B (en) | 2008-06-26 | 2008-06-26 | Aluminium cell air duct wasteheat utilizing method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100315932A CN101615870B (en) | 2008-06-26 | 2008-06-26 | Aluminium cell air duct wasteheat utilizing method and device |
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| Publication Number | Publication Date |
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| CN101615870A CN101615870A (en) | 2009-12-30 |
| CN101615870B true CN101615870B (en) | 2011-06-29 |
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| CN2008100315932A Expired - Fee Related CN101615870B (en) | 2008-06-26 | 2008-06-26 | Aluminium cell air duct wasteheat utilizing method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AR083049A1 (en) * | 2010-09-22 | 2013-01-30 | Goodtech Recovery Technology As | SIDE COATING |
| CN108233772A (en) * | 2017-12-07 | 2018-06-29 | 中国铝业股份有限公司 | A kind of method of aluminium electrolytic flue cogeneration |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3197342A (en) * | 1961-09-26 | 1965-07-27 | Jr Alton Bayne Neild | Arrangement of thermoelectric elements for improved generator efficiency |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3197342A (en) * | 1961-09-26 | 1965-07-27 | Jr Alton Bayne Neild | Arrangement of thermoelectric elements for improved generator efficiency |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平11-36981A 1999.02.09 |
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Address after: Taoyuan County in Hunan province Changde city 415700 disk town Chuangyuan Industrial Park Patentee after: Hunan Shengtong Technology Group Co., Ltd. Address before: 410205 Hunan province Changsha City National High Tech Development Zone, Lu Tin Road No. 2 Patentee before: Hunan Shengtong Technology Group Co., Ltd. |
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Granted publication date: 20110629 Termination date: 20170626 |
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