CN209836326U - Electrolytic plant and electrolytic cell layout structure of aluminum electrolytic cell series - Google Patents
Electrolytic plant and electrolytic cell layout structure of aluminum electrolytic cell series Download PDFInfo
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- CN209836326U CN209836326U CN201920595477.7U CN201920595477U CN209836326U CN 209836326 U CN209836326 U CN 209836326U CN 201920595477 U CN201920595477 U CN 201920595477U CN 209836326 U CN209836326 U CN 209836326U
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
An electrolytic plant and an electrolytic cell layout structure of an aluminum electrolytic cell series comprise a rectangular electrolytic plant with a notch, and electrolytic cells in the electrolytic plant are electrically connected in series and arranged in the rectangular electrolytic plant; a rectification station is arranged between gaps of the rectangular electrolysis plant or on one side of the gaps, a positive power supply output by rectification is connected with an electrolytic cell at one end in the rectangular electrolysis plant, a negative power supply output by rectification is connected with an electrolytic cell at the other end in the rectangular electrolysis plant, so that the electrolytic cells in the rectangular electrolysis plant form an electric loop, and the number of all the electrolytic cells in the rectangular electrolysis plant is more than 300. The utility model discloses a structure is keeping under the little condition of original factory building total length change, arranges a plurality of electrolysis trough segmentation, makes in every electrolysis trough receive with it parallel electrolysis electric current to its produced vertical magnetic field Bz no longer than the setting value.
Description
Technical Field
The utility model belongs to the technical field of aluminum metallurgy, in particular to an electrolytic plant and an electrolytic cell layout structure of an aluminum electrolytic cell series.
Background
Aluminum is produced by cryolite-alumina fused salt electrolysis. The cryolite-alumina fused salt electrolysis main body equipment is an electrolytic cell, a prebaked anode electrolytic cell aluminum smelting technology is adopted in the modern aluminum electrolysis production, the current intensity of the electrolytic cell exceeds 400kA, and the maximum current of the electrolytic cell reaches 660 kA; the number of the electrolytic cells in the electrolytic series is increased from the past 160 to 360, and in such an electrolytic series, the electrolytic cells are connected in series. The whole series of electrolytic cells are arranged in two electrolytic plants which are arranged in parallel to form a loop; if the number of the electrolytic cells in a series is 360, the number of the electrolytic cells in each electrolytic plant is 180, and the distance between the two electrolytic plants is 50-60 meters.
In the aluminum electrolysis production process, the conductive buses around the electrolytic cell generate a large magnetic field in the cathode aluminum liquid of the electrolytic cell, and particularly, the magnetic field force generated by the action of the vertical magnetic field and the horizontal current in the aluminum liquid of the electrolytic cell is the main reason for causing instability of the cathode aluminum liquid of the electrolytic cell and instability of the cell voltage and influences the current efficiency; when the current of the electrolytic cell series is increased, the vertical magnetic field generated by the series current from the adjacent electrolytic plants in the same series makes the vertical magnetic field of the electrolytic cell larger and extremely asymmetric.
Taking an electrolytic cell series with 500kA current intensity of an electrolytic aluminum factory in China as an example, 360 electrolytic cells of the electrolytic cell series are constructed in two electrolytic factory buildings which are parallel in parallel and 60 meters apart. Each electrolytic plant is provided with 180 electrolytic cells, the width of each electrolytic cell is 4.4 meters, the distance between every two electrolytic cells is 2 meters, the width of the two ends of the plant and the width of a channel in the plant are added, and the length of the whole electrolytic plant is about 1340 meters. The vertical magnetic field intensity of the electrolytic cell in each electrolytic plant from the series current of the electrolytic cells in the other electrolytic plant is 2 x 500 kA/60-16.7 gauss. The large vertical magnetic field has a great influence on the flow of cathode aluminum liquid in the electrolytic cell.
In order to reduce the influence of the magnetic field generated by the current from the adjacent electrolytic plant series, the design of the modern large-scale electrolytic cell mostly adopts the idle load bus of an independent direct current power supply on the electrolytic cell series, and the influence is counteracted by the magnetic field generated by the current in the idle load bus; however, the method not only consumes additional electric energy which is about 150-300 kWh/t-Al in terms of electric energy per ton of aluminum, but also needs additional investment, particularly large investment of metal buses.
Increasing the distance between two parallel electrolytic plants can reduce the influence of the magnetic field generated by the current of another plant series on the electrolytic cells in the plant, and for example, the distance between two electrolytic plants needs to be increased to 500 m if the vertical magnetic field generated by the current of another plant series from the same series in the series of electrolytic cells is reduced to 2 gauss, which means that the length of the connecting bus between two electrolytic plant ends far away from the rectifying station needs to be increased to 500 m. The connecting bus between the electricity outlet end of the rectification and the head and the tail of the electrolysis series is increased by more than 400 meters. The total number of busbars added to the entire potline is then up to 900 more metres, which not only increases the busbar investment but also increases the electrical energy consumption of the current busbars.
Disclosure of Invention
In view of the above, the utility model provides an electrolysis factory building and electrolysis trough overall arrangement structure of aluminium cell series arranges the factory building of electrolysis trough according to the rectangle, makes the electrolysis factory building of the parallel part each other of electrolysis trough series pull open the interval, reduces the electrolysis trough and comes from the influence of the perpendicular magnetic field of the electrolysis factory building series current parallel with it to its production, improves the stability of electrolysis trough negative pole aluminium liquid level, reduces power consumption.
The electrolytic plant and the electrolytic cell layout structure of the aluminum electrolytic cell series of the utility model comprise a rectangular electrolytic plant with a gap, and the electrolytic cells in the electrolytic plant are electrically connected in series and arranged in the rectangular electrolytic plant; a rectification station is arranged between gaps of the rectangular electrolysis plant or on one side of the gaps, a positive power supply output by rectification is connected with an electrolytic cell at one end in the rectangular electrolysis plant, a negative power supply output by rectification is connected with an electrolytic cell at the other end in the rectangular electrolysis plant, so that the electrolytic cells in the rectangular electrolysis plant form an electric loop, and the number of all the electrolytic cells in the rectangular electrolysis plant is more than 300.
In the structure, the rectangular electrolytic plant with the notch and the electrolytic tank inside the rectangular electrolytic plant are divided into A, B, C parts and D4 parts; wherein, the axial directions of the part A and the part B are vertical to the axial direction of the rectifying part and are called as longitudinal parts; the axial directions of the part C and the part D are parallel to the axial direction of the rectification, and are called as transverse parts; the 4 parts are connected in sequence according to A, C, B and D to form a notch-shaped rectangular electrolysis plant, or each of the 4 parts is a sub-plant, and the four sub-plants form a notch-shaped rectangular electrolysis plant in sequence of A, C, B and D; the gap is located between the part A and the part D.
In the structure, spaces for overhead travelling cranes and hoisting articles and spaces for opening gates are reserved at the two ends of the A, B, C and D4 parts; each part is provided with 1-3 passages for entering and exiting the electrolytic plant.
In the above structure, the distance between the parts A and B, or the distance between the parts C and D, in the longitudinal part or the transverse part, and the current intensity during the operation of the electrolytic cell determine the mutual vertical magnetic field intensity, and the calculation formula is:
Bz＝2*I/R；
in the formula, Bz is the vertical magnetic field intensity generated between the electrolytic cells of the A part and the B part or the vertical magnetic field intensity generated between the electrolytic cells of the C part and the D part in the working process, and the unit is Gaussian; i is the current intensity of the electrolytic bath series during working, and the unit is kilo amperes; r is the distance between part A and part B, or between part C and part D, in meters.
In the structure, the current intensity of each electrolytic cell in operation is more than or equal to 200 kA.
The utility model has the advantages that under the condition that the length of the electrolysis series bus is not increased or is increased very little, the electrolytic bath in the electrolytic plant of the greatly reduced electrolytic bath series comes from the influence of the plant series current relative to the electrolytic bath on the vertical magnetic field generated by the electrolytic plant series.
Drawings
FIG. 1 is a schematic view of the layout of the electrolytic plant and the electrolytic cell of the aluminum electrolytic cell series in example 1 of the utility model;
FIG. 2 is a schematic view of the layout structure of the electrolytic plant and the electrolytic cell of the aluminum electrolytic cell series in example 2 of the utility model;
in the figure, 1, a rectifying station, 2, a rectangular electrolytic plant, 3, a conductive bus, 4, an electrolytic cell, 4-1, part A, 4-2, part C, 4-3, part B, 4-4, part D, 5 and a gap.
Detailed Description
The present invention is further illustrated by the following examples.
The embodiment of the utility model provides an in the embodiment direct current rectification station.
The embodiment of the utility model provides an in the mutual perpendicular magnetic field intensity that produces of during operation between part A and the part B, or the mutual perpendicular magnetic field intensity Bz that produces of during operation between part C and the part D, calculate according to the following formula:
Bz＝2*I/R；
wherein I is the current intensity of the electrolytic cell series and the unit is kilo ampere; r is the distance between part A and part B, or between part C and part D, in meters.
Example 1
The electrolysis series of a 500kA electrolytic cell has 360 electrolytic cells, the width of the electrolytic cell is 4.4 meters, and the distance between the electrolytic cells is 2 meters; the length of the rectification station is 60 meters; rectangular electrolysis plant layout A, B, C with notch and four parts D;
the space distance of gates reserved at two ends of the electrolytic plant is 35 meters, a channel is arranged in the middle of each part of the electrolytic plant, and the width of the channel is set to be 35 meters;
setting the magnetic field intensity of series of currents of the electrolytic cells in the electrolytic plant buildings A and B from the electrolytic plant buildings which are opposite and parallel to each other to be 2 +/-0.3 gauss, and setting the vertical magnetic field of series of currents of the electrolytic cells in the electrolytic plant buildings C and D from the electrolytic plant buildings which are opposite to each other to be not more than 2 gauss;
the layout structure of the electrolytic plant and the electrolytic cell of the aluminum electrolytic cell series is shown in figure 1; the rectangular electrolysis plant provided with the notch comprises 360 electrolysis baths 4, and the 360 electrolysis baths 4 are electrically connected in series and arranged in the rectangular electrolysis plant 2 through a conductive bus 3; a rectifying station 1 is arranged on one side of a gap 5 of a rectangular electrolytic plant 2, an anode power supply output by the rectifying station 1 is connected with an electrolytic cell at one end in the rectangular electrolytic plant 2, and a cathode power supply output by the rectifying station is connected with an electrolytic cell at the other end in the rectangular electrolytic plant 2, so that a plurality of electrolytic cells 4 arranged in series electrically in the rectangular electrolytic plant 2 form an electric loop, and 360 electrolytic cells 4 in the rectangular electrolytic plant 2 are arranged;
the rectangular electrolytic plant 2 with the gap and a plurality of electrolytic tanks inside the rectangular electrolytic plant are divided into a part A, a part B, a part C and a part D; wherein, the axial directions of the part A and the part B are vertical to the axial direction of the rectifying post 1 and are called as longitudinal parts; the axial directions of the part C and the part D are parallel to the axial direction of the rectifying device 1 and are called as transverse parts; the electrolytic plant buildings of the part A and the part B are respectively provided with 123 electrolytic tanks, and the distance between the electrolytic tanks in the two electrolytic plant buildings of the part A and the part B is 500 meters; 62 electrolytic cells are arranged in the electrolytic plant of the part C, the number of the electrolytic cells in the electrolytic plant of the part D is 52, and the distance between the electrolytic cells in the electrolytic plant of the parts C and D is 890 meters;
according to Bz 2I/R, the vertical magnetic field intensity generated by the electrolysis baths in the A and B parts during working is 2 Gauss; the vertical magnetic field intensity generated by the electrolysis baths in the two parts C and D during working is 1.12 gauss.
Example 2
Taking a 400kA electrolytic cell electrolysis series as an example: the number of the electrolytic cells is 368, the width of the electrolytic cell is set to be 4.1 meters, and the distance between the electrolytic cells is set to be 2.3 meters; setting the length of the rectification station to be 60 meters;
the gap-type rectangular electrolysis plant layout A, B, C, D is characterized in that the space distance of gates reserved at two ends of four electrolysis plants is 35 meters, a channel is arranged in the middle of each electrolysis plant, and the width of the channel is set to be 35 meters;
setting the vertical magnetic field intensity generated between the electrolytic cells of the A part and the B part to be 1.5 +/-0.3 gauss, and setting the vertical magnetic field intensity generated between the electrolytic cells of the C part and the D part to be not more than 1.5 gauss;
the layout structure of the electrolytic plant and the electrolytic cell of the aluminum electrolytic cell series is shown in figure 2; the notch-shaped rectangular electrolysis plant comprises 368 electrolysis baths 4 which are electrically connected in series and arranged in a rectangular electrolysis plant 2 through a conductive bus 3; a rectification station 1 is arranged on one side of a gap 5 of a rectangular electrolysis plant 2, an anode power supply output by the rectification station 1 is connected with an electrolytic cell at one end in the rectangular electrolysis plant 2, and a cathode power supply output by the rectification station is connected with an electrolytic cell at the other end in the rectangular electrolysis plant 2, so that a plurality of electrolytic cells 4 arranged in series form an electric loop, and 368 electrolytic cells 4 in the rectangular electrolysis plant 2 are all arranged;
the notch-shaped rectangular electrolytic plant 2 and a plurality of electrolytic tanks in the rectangular electrolytic plant are divided into a part A, a part B, a part C and a part D; each of the 4 parts is a sub-plant; wherein, the axial directions of the part A and the part B are vertical to the axial direction of the rectifying post 1 and are called as longitudinal parts; the axial directions of the part C and the part D are parallel to the axial direction of the rectifying device 1 and are called as transverse parts; the electrolytic plant buildings of the part A and the part B are respectively provided with 127 electrolytic tanks, and the distance between the electrolytic tanks in the two electrolytic plant buildings is 500 meters; 62 electrolytic cells are arranged in the electrolytic plant of the part C; the number of the electrolytic cells in the electrolytic plant of the part D is 52, and the distance between the electrolytic cells in the electrolytic plant of the two parts is 914 m;
according to Bz 2I/R, the vertical magnetic field intensity generated when the electrolytic cell between the A part and the B part works is 1.6 gauss; the vertical magnetic field intensity generated when the electrolytic cell of the two parts C and D is operated is 0.88 gauss.
Claims (4)
1. An electrolytic plant and an electrolytic cell layout structure of an aluminum electrolytic cell series are characterized by comprising a rectangular electrolytic plant with a notch, wherein electrolytic cells in the electrolytic plant are electrically connected in series and arranged in the rectangular electrolytic plant; a rectification station is arranged between gaps of the rectangular electrolysis plant or on one side of the gaps, a positive power supply output by rectification is connected with an electrolytic cell at one end in the rectangular electrolysis plant, a negative power supply output by rectification is connected with an electrolytic cell at the other end in the rectangular electrolysis plant, so that the electrolytic cells in the rectangular electrolysis plant form an electric loop, and the number of all the electrolytic cells in the rectangular electrolysis plant is more than 300.
2. The layout structure of the electrolytic plant and the electrolytic cells of the aluminum reduction cell series according to claim 1, wherein the rectangular electrolytic plant with the notch and the electrolytic cells inside the rectangular electrolytic plant are divided into A, B, C and D4 parts; wherein, the axial directions of the part A and the part B are vertical to the axial direction of the rectifying part and are called as longitudinal parts; the axial directions of the part C and the part D are parallel to the axial direction of the rectification, and are called as transverse parts; the 4 parts are connected in sequence according to A, C, B and D to form a notch-shaped rectangular electrolysis plant, or each of the 4 parts is a sub-plant, and the four sub-plants form a notch-shaped rectangular electrolysis plant in sequence of A, C, B and D; the gap is located between the part A and the part D.
3. The layout structure of the electrolytic plant and the electrolytic cell of the aluminum reduction cell series according to claim 2, wherein spaces for overhead traveling cranes and lifting articles and spaces for opening gates are reserved at two ends of the A, B, C and D4 parts; each part is provided with 1-3 passages for entering and exiting the electrolytic plant.
4. The layout structure of the electrolytic plant and the electrolytic cell of the aluminum reduction cell series according to claim 2, wherein the distance between the part A and the part B, or the distance between the part C and the part D, in the longitudinal part or the transverse part, and the current intensity during the operation of the electrolytic cell determine the vertical magnetic field intensity generated by each other, and the calculation formula is as follows:
Bz＝2*I/R；
in the formula, Bz is the vertical magnetic field intensity generated between the electrolytic cells of the A part and the B part or the vertical magnetic field intensity generated between the electrolytic cells of the C part and the D part in the working process, and the unit is Gaussian; i is the current intensity of the electrolytic cell during working, and the unit is kiloampere; r is the distance between part A and part B, or between part C and part D, in meters.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201822143914X | 2018-12-20 | ||
| CN201822143914 | 2018-12-20 |
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| CN209836326U true CN209836326U (en) | 2019-12-24 |
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| CN201910344363.XA Active CN110029357B (en) | 2018-12-20 | 2019-04-26 | Electrolysis factory building and electrolysis trough overall arrangement structure of aluminium cell series |
| CN201920595477.7U Expired - Fee Related CN209836326U (en) | 2018-12-20 | 2019-04-26 | Electrolytic plant and electrolytic cell layout structure of aluminum electrolytic cell series |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029357A (en) * | 2018-12-20 | 2019-07-19 | 沈阳北冶冶金科技有限公司 | A kind of cell room and electrolytic cell layout structure of potline |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU461662A1 (en) * | 1972-03-29 | 1977-12-05 | Всесоюзный Научно-Исследовательский И Проектный Институт Алюминиевой,Магниевой И Электродной Промышленности | Method of installing busbars on aluminium electrolyzers |
| NO164787C (en) * | 1988-05-11 | 1990-11-14 | Norsk Hydro As | DEVICE FOR COMPENSATION OF DAMAGING MAGNETIC EFFECT FROM LIKE RIGHT FIELD AND ENDFIELD ON TRANSFERRED ELECTROLYE OVEN IN MOLDING ELECTROLYTIC PRODUCTS OF ALUMINUM. |
| CN1900371A (en) * | 2006-07-11 | 2007-01-24 | 贵阳铝镁设计研究院 | Configuration mode for electrolytic workshop and electrolytic repair factory |
| CN204435950U (en) * | 2015-01-23 | 2015-07-01 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | The arrangement of cell room |
| CN110029357B (en) * | 2018-12-20 | 2024-02-23 | 沈阳北冶冶金科技有限公司 | Electrolysis factory building and electrolysis trough overall arrangement structure of aluminium cell series |
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- 2019-04-26 CN CN201910344363.XA patent/CN110029357B/en active Active
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029357A (en) * | 2018-12-20 | 2019-07-19 | 沈阳北冶冶金科技有限公司 | A kind of cell room and electrolytic cell layout structure of potline |
| CN110029357B (en) * | 2018-12-20 | 2024-02-23 | 沈阳北冶冶金科技有限公司 | Electrolysis factory building and electrolysis trough overall arrangement structure of aluminium cell series |
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| Publication number | Publication date |
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| CN110029357B (en) | 2024-02-23 |
| CN110029357A (en) | 2019-07-19 |
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Granted publication date: 20191224 Termination date: 20210426 |