CN103741166A - Electrolytic cell - Google Patents
Electrolytic cell Download PDFInfo
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- CN103741166A CN103741166A CN201310742767.7A CN201310742767A CN103741166A CN 103741166 A CN103741166 A CN 103741166A CN 201310742767 A CN201310742767 A CN 201310742767A CN 103741166 A CN103741166 A CN 103741166A
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- base plate
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- insulation layer
- nano material
- pot shell
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Abstract
The invention discloses an electrolytic cell which comprises a bottom plate, a cell housing and a nano material insulation layer, wherein the cell housing is arranged on the bottom plate, a holding space is limited in the cell housing, and the nano material insulation layer is arranged on at least one of the outer surface of the cell housing and the lower surface of the bottom plate. According to the electrolytic cell disclosed by the embodiment of the invention, the nano material insulation layer is arranged on at least one of the outer surface of the cell housing and the lower surface of the bottom plate, and is capable of performing external insulation on the electrolytic cell, so that the heat loss of the electrolytic cell is remarkably reduced, the heat lost to a surrounding environment by the electrolytic cell through convection, radiation and conduction is reduced, the heat balance of the electrolytic cell is effectively adjusted, the insulation performance of the electrolytic cell is greatly improved, and the condition is created for realizing a low-temperature and low-pressure control technology.
Description
Technical field
The present invention relates to technical field of aluminum electrolysis, more specifically, relate to a kind of electrolyzer.
Background technology
Aluminium industry is a big power consumer, this phenomenon of aluminum electrolysis industry ubiquity high energy consumption, and the cost of electric energy accounts for 40% left and right of total cost, high energy consumption, current efficiency is low, bath life is short etc., and problem is restricting China's aluminium industrial expansion.China's aluminium industry is at present main to be existed: (one), resource congenital defect, and complex process, affects aluminum oxide cost; (2), enterprise is small and scattered, labour productivity is lower, is difficult to form scale and benefit; (3), technical equipment falls, automatization level is low, technological transformation and application are relatively slow; (4), excess production capacity, drug on the market; (5) problems such as, quality product is not good enough, and kind is few, and the market competitiveness is weak have seriously perplexed China's aluminium industrial expansion.
Therefore, whole metallurgy industry is all faced with acid test, and power price goes up year by year, aluminium valency low level is hovered makes aluminum electrolysis industry step into unprecedented low state, and wherein, 70% aluminum electrolysis industry is all in lossing state.Under such overall situation, only accomplish cost efficiency, energy-saving and cost-reducing, produce same commodity by minimum cost, can in keen competition day by day, there is the one seat of oneself.
In recent years, the technical research of China's electrolysis of aluminum new technology, novel material, new equipment and industrial test research have all been made significant headway, and have all significantly carried out Industry Promotion, have obtained good effect.Save energy and reduce the cost and seem more important, low temperature low voltage production control technology becomes the target that field of aluminum electrolysis will realize day by day.
My company has researched and developed phosphorus-containing pig iron for electrolyzing aluminium cathode preparation method technology, the smelting technique of curved cathode high energy efficiency aluminium cell, electrolysis of aluminum low temperature control method technology in succession, and obtained success, in large pre-baked cell series, carried out application, after the application of phosphorus pig iron technology, planar slot average voltage reduces 80mv-150mv compared with pricking paste groove with tradition; After curved cathode technology implementation, bath voltage is compared by traditional planar slot, reduces 200-300mv; On electrolyzer, carry out the integrated application of curved surface phosphorus pig iron technology, groove average voltage reduces 200-350mv.The average groove temperature of electrolyzer is down between 935-938 ℃ by 940-945 ℃, and average cell voltage is down to 3.9V left and right by 4.15V, and the ton aluminum direct current consumes reduces 1000kwh/t.Al, and when having realized the production of low temperature point voltage, electrolyzer insulation problem is following.
Because of the reduction of bath voltage, reduced the input of heat, electrolyzer operation is colder, stretch one's legs long, electrolyzer fluctuation of service, current efficiency is low, and ionogen viscosity increases, mobility reduces, breeze is not easily separated, and solvability and the wettability of aluminum oxide in ionogen reduces, and effect coefficient raises, anode effect increases, and has affected the control of technique.Therefore, the heat-insulating property of electrolyzer is further improved.
Summary of the invention
The present invention is intended to solve at least to a certain extent one of above-mentioned technical problem of the prior art.For this reason, one object of the present invention is to propose a kind of electrolyzer of good heat insulating.
According to the electrolyzer of the embodiment of the present invention, comprising: base plate; Pot shell, described pot shell is located on described base plate, in described pot shell, is limited with spatial accommodation; With nano material thermal insulation layer, described nano material thermal insulation layer is located at least one of the outside surface of described pot shell and the lower surface of described base plate.
According to the electrolyzer of the embodiment of the present invention, in at least one of lower surface by the outside surface at pot shell and base plate, nano material thermal insulation layer is set, nano material thermal insulation layer can carry out outer insulation to electrolyzer, the calorific loss of electrolyzer is significantly reduced, the electrolyzer heat that environment loses by convection current, radiation and conduction is towards periphery reduced, effectively regulated the heat balance of electrolyzer, the heat-insulating property of electrolyzer is improved greatly, for condition has been created in the realization of low-temp low-pressure control techniques.
In addition, electrolyzer according to the above embodiment of the present invention, can also have following additional technical characterictic:
According to one embodiment of present invention, described nano material thermal insulation layer comprises two-layer, and the thickness of every layer of described nano material thermal insulation layer is 10-30mm.
According to one embodiment of present invention, described nano material thermal insulation layer is hydrophobic nature silicate board.
According to one embodiment of present invention, described electrolyzer also comprises: side wall carbon block, described side wall carbon block is located at the internal surface setting of described upper part of the electrolytic cell and contiguous described pot shell, between described side wall carbon block and described pot shell, is provided with ceramic fiber warming plate.
According to one embodiment of present invention, the top and bottom of described side wall carbon block are respectively equipped with around and stick with paste.
According to one embodiment of present invention, described electrolyzer also comprises: the cast bed of material, the internal surface setting of the contiguous described pot shell of the described cast bed of material, is provided with ceramic fiber back lining board between the described cast bed of material and described pot shell.
According to one embodiment of present invention, between the lower surface of described pot shell and described base plate, be provided with the dry type impervious bed of material.
According to one embodiment of present invention, the lower surface of described base plate is provided with described nano material thermal insulation layer.
According to one embodiment of present invention, described base plate comprises: calcium silicate heat-preserving plate, and described calcium silicate heat-preserving plate is positioned at described base plate bottom and is connected with described nano material thermal insulation layer; With high-strength vermiculite insulating brick, described high-strength vermiculite insulating brick described base plate top and be located at the described dry type impervious bed of material and described calcium silicate heat-preserving plate between.
According to one embodiment of present invention, described base plate also comprises: light strong insulating brick, described light strong insulating brick is located between described calcium silicate heat-preserving plate and described high-strength vermiculite insulating brick.
Additional aspect of the present invention and advantage will provide in description part below, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is according to the structural representation of the electrolyzer of the embodiment of the present invention.
Reference numeral:
Electrolyzer 100;
Pot shell 10; Ceramic fiber warming plate 11; Ceramic fiber back lining board 12;
Base plate 20; Calcium silicate heat-preserving plate 21; High-strength vermiculite insulating brick 22; Light strong insulating brick 23;
Nano material thermal insulation layer 30;
Side wall carbon block 40;
Stick with paste 50 around;
Build the bed of material 60;
The dry type impervious bed of material 70.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or integral; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
Below in conjunction with accompanying drawing, specifically describe according to the electrolyzer 100 of the embodiment of the present invention.
As shown in Figure 1, according to the electrolyzer 100 of the embodiment of the present invention, comprise: base plate 20, pot shell 10 and nano material protective layer.Particularly, pot shell 10 is located on base plate 20, in pot shell 10, is limited with spatial accommodation, and nano material thermal insulation layer 30 is located at least one of the outside surface of pot shell 10 and the lower surface of base plate 20.
According to the electrolyzer 100 of the embodiment of the present invention, in at least one of lower surface by the outside surface at pot shell 10 and base plate 20, nano material thermal insulation layer 30 is set, nano material thermal insulation layer 30 can carry out outer insulation to electrolyzer 100, the calorific loss of electrolyzer 100 is significantly reduced, electrolyzer 100 heat that environment loses by convection current, radiation and conduction towards periphery reduces, effectively regulated the heat balance of electrolyzer 100, thereby the heat-insulating property of electrolyzer 100 is improved greatly, for condition has been created in the realization of low-temp low-pressure control techniques.
According to one embodiment of present invention, nano material thermal insulation layer 30 comprises two-layer, and the thickness of every layer of nano material thermal insulation layer 30 is 10-30mm.The setting of two-layer nano material thermal insulation layer 30, further improves the heat-insulating property of electrolyzer 100.Particularly, in a specific embodiment of the present invention, nano material thermal insulation layer 30 arranges after electrolyzer 100 roasting and startings, and is fixed with fixture, makes its firm being positioned on electrolyzer 100.Preferably, the thickness of two-layer nano material thermal insulation layer 30 is 20mm.
Nano material thermal insulation layer 30 can adopt nanometer heat insulating material to be prepared from, and nanometer heat insulating material tool has the following advantages:
1), high temperature resistant, applied range: nanometer heat insulating material use temperature can reach 1000 ℃, can be widely used in needing the field of high temperature insulating;
2), thermal conductivity is low, energy-saving effect is good: nanometer heat insulating material possesses ultralow thermal conductivity, and energy-saving effect is splendid;
3), impervious, cracking resistance, hydrophobicity performance excellence: nanometer heat insulating material hydrophobic nature is splendid, can guarantee again passing through of steam when preventing penetration by liquid water, frosting, dewfall, and building can be breathed, and has extended the work-ing life of product;
4), little, the thin thickness of density, transportation easy construction.Thus, the nano material thermal insulation layer 30 of preparing with nanometer heat insulating material also has above-mentioned useful effect.Particularly, nano material thermal insulation layer 30 can be hydrophobic nature silicate board.Hydrophobic nature silicate board good heat preservation performance, can be applicable to be incubated on electrolyzer 100.
According to one embodiment of present invention, electrolyzer 100 also comprises side wall carbon block 40, side wall carbon block 40 is located at the internal surface setting of electrolyzer 100 tops and contiguous pot shell 10, is provided with ceramic fiber warming plate 11, so that electrolyzer 100 is carried out to interior insulation between side wall carbon block 40 and pot shell 10.The thickness of ceramic fiber warming plate 11 can be made as 6mm.Further, according to one embodiment of present invention, the top and bottom of side wall carbon block 40 are respectively equipped with sticks with paste 50 around.Particularly, can be around the cephalic groove groove location at negative electrode side wall carbon block 40 two ends be inwardly pressed 40mm paste 50.
Further, according to one embodiment of present invention, electrolyzer 100 also comprises the cast bed of material 60, and the internal surface setting of the cast bed of material 60 contiguous pot shells 10, is provided with ceramic fiber back lining board 12 between the cast bed of material 60 and pot shell 10.Thus, ceramic fiber back lining board 12 can improve the heat-insulating property of electrolyzer 100 surroundings.The thickness of ceramic fiber back lining board 12 can arrange according to different insulation situations, for example, the thickness of ceramic fiber back lining board 12 can be made as to 80mm.In addition, ceramic fiber back lining board 12 is located at and is built between the bed of material 60 and pot shell 10, can make ceramic fiber back lining board 12 be protected, improved the work-ing life of ceramic fiber back lining board 12.
In embodiments more of the present invention, between the lower surface of pot shell 10 and base plate 20, be provided with the dry type impervious bed of material 70.Further, the lower surface of base plate 20 is provided with nano material thermal insulation layer 30.Now, nano thermal insulation layer is positioned at the furnace bottom position of electrolyzer 100, and nano material thermal insulation layer 30 can be incubated the bottom of electrolyzer 100, has further improved the heat-insulating property of electrolyzer 100.Wherein, nano material thermal insulation layer 30 can arrange in electrolyzer 100 brickwork processes, and the thickness of nano material thermal insulation layer 30 can be made as 20mm.
Particularly, according to one embodiment of present invention, base plate 20 comprises calcium silicate heat-preserving plate 21 and high-strength vermiculite insulating brick 22.Calcium silicate heat-preserving plate 21 is positioned at base plate 20 bottoms and is connected with nano material thermal insulation layer 30.High-strength vermiculite insulating brick 22 base plate 20 tops and be located at the dry type impervious bed of material 70 and calcium silicate heat-preserving plate 21 between.The further heat-insulating property that improves base plate 20 that arranges of calcium silicate heat-preserving plate 21 and high-strength vermiculite insulating brick 22.Wherein, the thickness of calcium silicate heat-preserving plate 21 can be made as 80mm, and the thickness of high-strength vermiculite insulating brick 22 can be made as 60mm.
Further, according to one embodiment of present invention, base plate 20 also comprises light strong insulating brick 23, and light strong insulating brick 23 is located between calcium silicate heat-preserving plate 21 and high-strength vermiculite insulating brick 22.Thus, base plate 20 is provided with high-strength vermiculite insulating brick 22 from top to bottom successively, light insulating brick 23, calcium silicate heat-preserving plate 21 and arranging of 30, four layers of thermal insulation layer of nano material thermal insulation layer by force can make the heat-insulating property of electrolyzer 100 greatly improve.Wherein, the thickness of light strong insulating brick 23 can be made as 65mm, and four layers of thermal insulation layer all can in electrolyzer 100 brickwork processes, setting completed.
With of the prior art 702
#experimental tank is example, on integrated basis of having applied curved surface phosphorus pig iron negative electrode casting technique and low temperature low voltage control techniques, has adopted according to the electrolyzer 100 of the embodiment of the present invention and has tested.702
#the technical indicator of experimental tank is: mean current efficiency 95.5%, average cell voltage 3.8V, direct current consumption 11860kwh/t.Al, power consumption is lower, and (the average direct current consumption index of domestic large-scale groove is 13014kWh/t.Al, and domestic optimum direct current consumption index is 12339kWh/t.Al.), bottom temperature 60-70 ℃, fenestella temperature 260-270 ℃, temperature-averaging when not adopting heat preservation technology is low 50 ℃, what electrolysis medial temperature was more balanced is controlled between 935 ℃-940 ℃, groove average voltage reaches 3.8V, and the bath voltage 100mv that declined on original basis has realized low temperature low-voltage stabilizing and produced.702
#the technical indicator of experimental tank reaches domestic advanced person, the leading level in the world, for the commercial application of low temperature low voltage has been created condition.
According to other formations of the electrolyzer 100 of the embodiment of the present invention and operation, be all known for those of ordinary skills, be not described in detail here.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.In addition, those skilled in the art can engage the different embodiment that describe in this specification sheets or example and combine.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, modification, replacement and modification.
Claims (10)
1. an electrolyzer, is characterized in that, comprising:
Base plate;
Pot shell, described pot shell is located on described base plate, in described pot shell, is limited with spatial accommodation; With
Nano material thermal insulation layer, described nano material protective layer is located at least one of the outside surface of described pot shell and the lower surface of described base plate.
2. electrolyzer according to claim 1, is characterized in that, described nano material thermal insulation layer comprises two-layer, and the thickness of every layer of described nano material thermal insulation layer is 10-30mm.
3. electrolyzer according to claim 1 and 2, is characterized in that, described nano material thermal insulation layer is hydrophobic nature silicate board.
4. electrolyzer according to claim 1, it is characterized in that, also comprise: side wall carbon block, described side wall carbon block is located at the top of described electrolyzer and the internal surface setting of contiguous described pot shell, between described side wall carbon block and described pot shell, is provided with ceramic fiber warming plate.
5. electrolyzer according to claim 4, is characterized in that, the top and bottom of described side wall carbon block are respectively equipped with around and stick with paste.
6. electrolyzer according to claim 1, is characterized in that, also comprises: the cast bed of material, the internal surface setting of the contiguous described pot shell of the described cast bed of material, is provided with ceramic fiber back lining board between the described cast bed of material and described pot shell.
7. electrolyzer according to claim 1, is characterized in that, between the lower surface of described pot shell and described base plate, is provided with the dry type impervious bed of material.
8. electrolyzer according to claim 7, is characterized in that, the lower surface of described base plate is provided with described nano material thermal insulation layer.
9. electrolyzer according to claim 8, is characterized in that, described base plate comprises:
Calcium silicate heat-preserving plate, described calcium silicate heat-preserving plate is positioned at described base plate bottom and is connected with described nano material thermal insulation layer; With
High-strength vermiculite insulating brick, described high-strength vermiculite insulating brick described base plate top and be located at the described dry type impervious bed of material and described calcium silicate heat-preserving plate between.
10. electrolyzer according to claim 9, is characterized in that, described base plate also comprises: light strong insulating brick, described light strong insulating brick is located between described calcium silicate heat-preserving plate and described high-strength vermiculite insulating brick.
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| CN201310742767.7A CN103741166A (en) | 2013-12-30 | 2013-12-30 | Electrolytic cell |
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| CN201310742767.7A CN103741166A (en) | 2013-12-30 | 2013-12-30 | Electrolytic cell |
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Cited By (2)
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| CN104233375A (en) * | 2014-08-22 | 2014-12-24 | 云南云铝涌鑫铝业有限公司 | Electrolytic bath |
| CN104846402A (en) * | 2015-04-17 | 2015-08-19 | 内蒙古机电职业技术学院 | Apparatus and method for low temperature electrolysis separation of silicon-aluminum alloy |
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Effective date of registration: 20140813 Address after: 654308 Yunnan Province Honghe Hani and Yi Honghe Jianshui County Sheep Street Ling'an Town Industrial Park Applicant after: Yunnan Yunlyu Runxin Aluminum Co., Ltd. Applicant after: Yunnan Province's aluminium electroloysis energy-saving and emission-reduction Engineering Technical Research Centre Address before: Honghe Hani and Yi Autonomous Prefecture of Yunnan Honghe Jianshui County Industrial Park Applicant before: Yunnan Yunlyu Runxin Aluminum Co., Ltd. |
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Inventor after: Zhao Ruimin Inventor after: Long Changhong Inventor after: Che Lizhi Inventor after: Xiong Ziyong Inventor after: Zhang Pingjun Inventor after: Yang Guorong Inventor after: Li Shunhua Inventor after: Shen Bing Inventor after: Wang Jianping Inventor after: Tang Qifu Inventor before: Yang Yewei Inventor before: Li Shunhua Inventor before: Che Lizhi Inventor before: Zhao Ruimin Inventor before: Xiong Ziyong Inventor before: Zhang Pingjun Inventor before: Yang Guorong Inventor before: Wang Jianping Inventor before: Tang Qifu Inventor before: Long Changhong |
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Free format text: CORRECT: INVENTOR; FROM: YANG YEWEI CHE LIZHI ZHAO RUIMIN XIONG ZIYONG ZHANG PINGJUN YANG GUORONG WANG JIANPING TANG QIFU LONG CHANGHONG LI SHUNHUA TO: ZHAO RUIMIN CHE LIZHI XIONG ZIYONG ZHANG PINGJUN YANG GUORONG LI SHUNHUA SHEN BING WANG JIANPING TANG QIFU LONG CHANGHONG |
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Application publication date: 20140423 |