Electrolytic bath equipment

Abstract

The invention relates to the technical field of electrolytic cells, in particular to electrolytic cell equipment capable of preventing large-scale damage caused by cell leakage. The electrolytic bath equipment comprises an electrolytic bath body, a space used for containing molten electrolyte is formed in the electrolytic bath body, the electrolytic bath equipment further comprises a leaked liquid collecting device, and the leaked liquid collecting device is arranged on the periphery of the electrolytic bath body and provided with a collecting cavity. The collecting cavity is provided with a leaked liquid receiving opening so that leaked molten liquid can enter the collecting cavity when the electrolytic bath body leaks liquid. The leaked liquid collecting device is used for receiving leaked liquid and collecting high-temperature molten liquid, diffusion of the high-temperature molten liquid can be effectively reduced, large-scale damage to surrounding components due to the fact that a large amount of leaked liquid flows out is not likely to happen, and losses are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electrolytic cells, and in particular to electrolytic cell equipment capable of preventing large-scale damage caused by cell leakage. Background Art

[0002] The electrolytic cell is the core equipment of aluminum electrolysis production, and its stability and safety are of vital importance. The body of the electrolytic cell contains molten electrolyte and aluminum liquid. A cathode carbon block is set at the bottom of the electrolytic cell body, a cathode steel bar is set inside the cathode carbon block, and a furnace wall crust and side wall lining are set on the side wall of the electrolytic cell body. With the long-term use of the electrolytic cell, the problem of corrosion and damage to the cathode cell shell will become increasingly serious. When the cathode cell shell is damaged, aluminum liquid and electrolyte molten salt will leak out from the bottom or side wall of the cell, resulting in a leakage problem. These high-temperature aluminum liquids and molten salts have extremely strong impact and corrosiveness. In the factory building, the electrolytic cell is usually arranged side by side with many sets of equipment. When the electrolytic cell has a leakage problem, the leaked molten liquid falls on the ground around the electrolytic cell, destroying the surrounding structure of the electrolytic cell. In addition, when the leakage is large, the leaked liquid will contact the adjacent electrolytic cell and cause greater damage. Currently, there are limited ways to deal with electrolytic cell leakage problems, mainly relying on regular inspections and maintenance as well as emergency response measures after accidents. However, this cannot quickly and effectively control the situation when accidents occur. Leakage accidents often cause large-scale damage, with great economic losses and environmental risks. Summary of the invention

[0003] The object of the present invention is to provide an electrolytic cell device to solve the problem that the current electrolytic cell is prone to large-scale damage when leakage occurs.

[0004] The technical solution of the electrolytic cell equipment of the present invention is: An electrolytic cell device comprises an electrolytic cell body, wherein a space for containing molten electrolyte is provided inside the electrolytic cell body, and the electrolytic cell device further comprises a leakage collecting device, which is arranged on the periphery of the electrolytic cell body and has a collecting cavity, wherein the collecting cavity is provided with a leakage receiving port for allowing leaked molten liquid to enter the collecting cavity when the electrolytic cell body leaks.

[0005] Beneficial effects: The present invention improves on the electrolytic cell in the prior art, and arranges a leakage collection device on the periphery of the electrolytic cell body. The leakage collection device has a collection cavity. When a leakage groove appears on the side wall and / or bottom of the electrolytic cell body, the leaked molten liquid can enter the collection cavity through the leakage receiving port. The leakage is received by the leakage collection device to collect the high-temperature molten liquid, which can effectively reduce the diffusion of the high-temperature molten liquid. It is not easy to cause large-scale damage to surrounding components due to the large amount of leakage outflow, and the leakage groove can be prevented from causing large-scale damage and reduce losses.

[0006] Furthermore, the leakage collection device includes a top cover for covering the leakage receiving port. When the electrolytic cell body leaks, the leaked molten liquid falls onto the top cover, burns through the top cover and enters the collection chamber.

[0007] Furthermore, the electrolytic cell equipment is used for aluminum electrolysis production, and the top cover is made of aluminum.

[0008] Furthermore, a plurality of collecting chambers are provided at intervals.

[0009] Furthermore, the leakage collection device has a communication port that connects two adjacent collection chambers.

[0010] Furthermore, there are multiple collecting chambers located on the same side of the electrolytic cell body.

[0011] Furthermore, collecting chambers are provided around the electrolytic cell body.

[0012] Furthermore, the leakage collection device comprises a plurality of collection units, each of which is provided with the collection chamber, and the collection units are detachably connected.

[0013] Furthermore, a roller is arranged at the bottom of the collecting unit.

[0014] Furthermore, the leakage collection device is located below the cathode conductive rod of the electrolytic cell body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of Embodiment 1 of the electrolytic cell equipment of the present invention; Figure 2 for Figure 1 A side view of the electrolytic cell apparatus in FIG. Figure 3 for Figure 1 A three-dimensional schematic diagram of a leakage collection device; Figure 4 for Figure 1 A side view of the leakage collection device in FIG. Figure 5 It is a three-dimensional schematic diagram of embodiment 2 of the electrolytic cell device of the present invention; Figure 6 It is a side schematic diagram of embodiment 2 of the electrolytic cell device of the present invention; Figure 7 for Figure 5 Schematic diagram of the relative position of the busbar and the collecting unit.

[0016] In the figure: 100, second floor; 10, electrolytic cell body; 11, column busbar; 20, leakage collection device; 21, collection chamber; 22, collection unit; 23, cover plate; 24, box body; 25, connecting flange; 26, side opening; 27, roller. DETAILED DESCRIPTION

[0017] The basic concept of the present invention is to arrange a leakage collection device on the periphery of the electrolytic cell body, use the leakage collection device to receive the leakage, reduce the large-scale diffusion of high-temperature molten liquid, and prevent the leakage cell from causing large-scale damage.

[0018] The present invention is specifically described below with reference to the embodiments.

[0019] Embodiment 1 of the electrolytic cell equipment of the present invention: like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the electrolytic cell equipment includes an electrolytic cell body 10, and the electrolytic cell body 10 includes components such as a cell shell, a cathode conductive rod, a cathode carbon block, a furnace side, and a side wall lining. The cathode conductive rod and the cathode carbon block are located at the bottom of the electrolytic cell body 10, and the furnace side and the side wall lining are used to form the side wall of the electrolytic cell body 10. The cell shell constitutes a mounting base for corresponding components. The composition structure of these components can refer to the basic structure of an existing electrolytic cell. Here, the electrolytic cell body 10 is a part for containing electrolyte for electrolytic production. A space for containing molten electrolyte is provided inside the electrolytic cell body 10. The electrolytic cell equipment is used for aluminum electrolysis. Accordingly, aluminum liquid and electrolyte molten salt are contained inside the electrolytic cell body 10. The cathode conductive rod and cathode carbon block belong to the cathode structure of the electrolytic cell equipment. The anode structure of the electrolytic cell equipment includes an anode assembly and a column busbar 11. The upper periphery of the electrolytic cell has a second floor 100. The electrolytic cell has a flue, a shield and other components located above the second floor. The main part of the lower part of the electrolytic cell containing the molten liquid is located below the second floor. The electrolytic cell body is located on the first floor, and the first floor can support the bottom of the electrolytic cell. The upper end of the column busbar 11 is conductively connected to the anode guide rods of each anode assembly through the longitudinal busbar, and the lower end passes through the second floor 100 and is connected downward to the corresponding circuit. The anode structure can refer to the related structure of the electrolytic cell in the prior art, which will not be repeated here.

[0020] The electrolytic cell body 10 can be regarded as an electrolytic cell in the prior art. As the electrolytic cell is used for many years, leakage problems will occur, mainly leakage at the lower part of the electrolytic cell, and aluminum liquid and electrolyte molten salt will leak out from the bottom or side wall of the electrolytic cell body. In order to prevent large-scale damage caused by leakage, the electrolytic cell equipment also includes a leakage collection device 20, which is arranged on the periphery of the electrolytic cell body 10. The leakage collection device 20 has a collection chamber 21, and the collection chamber 21 is provided with a leakage receiving port to allow the leaked molten liquid to enter the collection chamber 21 when the electrolytic cell body 10 leaks. The arrangement position of the leakage collection device 20 is sufficient to catch the leakage. The leakage is received by the leakage collection device 20, and high-temperature molten liquid can be collected to isolate combustibles and prevent the leakage from directly leaking onto the ground around the electrolytic cell body 10. The diffusion of high-temperature molten liquid can be effectively reduced, and it is not easy to cause large-scale damage to surrounding components due to a large amount of leakage. Large-scale damage caused by leakage can be prevented, which is beneficial to reducing economic losses.

[0021] The leakage collection device 20 includes a top cover for covering the leakage receiving port. When the electrolytic cell body 10 leaks, the leaked molten liquid falls on the top cover, burns through the top cover and enters the collection chamber 21. The top cover is used to cover the leakage receiving port of the collection chamber 21, so that a relatively closed space is formed in the collection chamber 21, which greatly reduces the air circulation capacity. The high-temperature molten liquid falls on the top cover, so that the part of the top cover that contacts the high-temperature molten liquid melts and burns through holes. The high-temperature molten liquid enters the collection chamber 21 through the holes. The relatively closed space in the collection chamber 21 is used to prevent fire. In other embodiments, the top cover may not be provided. In this case, the leakage receiving port of the collection chamber is open, and the collection chamber can receive the leaked liquid to prevent it from spreading.

[0022] The electrolytic cell equipment is used for aluminum electrolysis production. Accordingly, the top cover is made of aluminum. The leakage receiving port can be covered with an aluminum plate. Not only is the source of raw materials for the top cover convenient and economical, but new impurities will not be introduced, and the top cover can also be made of a thin steel plate.

[0023] There are multiple collection chambers 21 at intervals, and the leakage collection device 20 has multiple collection chambers 21, which are convenient to be arranged around the electrolytic cell body 10, reduce the space in a single collection chamber 21, and ensure structural strength. In other embodiments, only one collection chamber can be provided, and a collection chamber with a larger internal space is used to receive the leakage.

[0024] The leakage collection device 20 has a communication port that connects two adjacent collection chambers 21. Any two adjacent collection chambers 21 are connected through the communication port between them, so that their spaces are connected. When a large amount of leakage is received in one collection chamber 21, the molten liquid can flow into the adjacent collection chamber 21 through the communication port, so as to accommodate more molten liquid, and facilitate rapid cooling, thereby reducing thermal damage to the leakage collection device 20. In other embodiments, when the space in a single collection chamber is large enough, two adjacent collection chambers can also be disconnected.

[0025] There are multiple collecting chambers 21 on the same side of the electrolytic cell body 10, which is convenient for adapting to the size of the electrolytic cell body 10, reducing the size of a single collecting chamber 21, facilitating manufacturing, and flexible arrangement. In other embodiments, a larger collecting chamber can also be set on the same side of the electrolytic cell body.

[0026] The electrolytic cell body 10 has a length direction, a width direction and a height direction. The cathode conductive rod of the electrolytic cell body 10 extends along its width direction. The longitudinal busbars connected to each anode guide rod extend along the length direction of the electrolytic cell body. The same longitudinal busbar is connected to multiple column busbars 11. The column busbar is located on one side of the electrolytic cell body in the width direction. The column busbars are provided on both sides of the electrolytic cell body 10 in the width direction, and multiple column busbars 11 are provided at intervals on the same side along the length direction of the electrolytic cell body. The parts of the leakage collection device 20 located on both sides of the electrolytic cell body in the width direction are located on the side of the column busbar close to the electrolytic cell body, and the leakage collection device 20 is arranged using the space between the column busbar and the electrolytic cell body. The collection chamber 21 is provided on both sides of the length direction and both sides of the width direction of the electrolytic cell body 10, that is, the collection chamber 21 is provided around the electrolytic cell body 10, which can receive the molten liquid leaked from the surrounding of the electrolytic cell body 10 to improve safety. In other embodiments, the collection chamber can also be provided only on both sides of the width direction of the electrolytic cell body.

[0027] The leakage collection device 20 includes a plurality of collection units 22, each of which is provided with a collection chamber 21, each of which is provided with a cover plate 23, and each of which is detachably connected, convenient for assembly and installation, flexible in arrangement, convenient for disassembly, simple in installation, strong in practicality, and capable of quickly responding to aluminum leakage accidents and reducing accident handling time. In other embodiments, the collection units of the electrolytic cell body may be disconnected and independent of each other.

[0028] There are two types of collecting units 22, one is a side collecting unit and the other is a corner collecting unit. The side collecting unit is opposite to the outer side of the electrolytic cell body 10, and the corner collecting unit is opposite to the corner of the electrolytic cell body 10. Each collecting unit 22 is arranged in a circle around the electrolytic cell body 10, and each collecting unit 22 is combined to form a leakage collection device 20 surrounding the electrolytic cell body 10. Corner collecting units are provided at the four corners of the electrolytic cell body 10, and two adjacent side collecting units located on the adjacent sides of the electrolytic cell body 10 are connected together through the corner collecting units. The side collecting units located on both sides of the electrolytic cell body 10 in the width direction are located on the inner side of the column busbar 11 close to the electrolytic cell body and do not exceed the column busbar.

[0029] The structure and size of each collecting unit 22 are the same, the specifications of each side collecting unit are the same, and the specifications of each corner collecting unit are the same. The collecting unit 22 includes a box body 24, the inner cavity of the box body 24 constitutes a collecting cavity 21, and a side opening 26 is provided on the side wall of the box body 24, and the side opening 26 forms a connecting port, wherein the side openings 26 are provided on the adjacent two side walls of the box body 24 of the side collecting unit, and the side openings 26 are provided on the opposite two side walls of the corner collecting unit, and the side openings 26 are rectangular openings and are located at the bottom of the box body 24, and the top opening of the box body 24 constitutes a leakage receiving port, and each collecting unit 22 is equipped with a cover plate 23, and the cover plate 23 constitutes a top cover to cover the leakage receiving port, and the size of the cover plate 23 is set as required, and the number of collecting units 22 can be set as required. The box body 24 is a square box structure, which is convenient for combination and connection.

[0030] The box 24 is made of steel material, about 30-50 cm high and of a certain thickness. The cover plate 23 can be made of an aluminum plate of 1-5 cm. The bottom of the box 24 of the collection unit 22 is equipped with rollers 27, and the four corners of the bottom of the box 24 are equipped with rollers 27. The collection unit 22 can be moved by the rollers 27, which is convenient to use. In other embodiments, rollers may not be provided, and the collection unit can be directly transported and transferred.

[0031] A connecting flange 25 is provided on the side wall of the box body 24. The connecting flange 25 is a disc structure and is arranged above the side opening 26 on the same side wall of the box body 24. The connecting flange 25 cooperates with bolts to achieve a detachable connection between two adjacent collection units 22, which is convenient for disassembly and assembly.

[0032] The leakage collection device 20 is supported on the outer ground of the electrolytic cell body 10, which is the ground of the first floor corresponding to the bottom of the electrolytic cell. The leakage receiving port faces upward. The leakage collection device 20 can be in contact with the outer wall of the electrolytic cell body 10, or there can be a small gap, that is, the box body 24 can be attached to the electrolytic cell body 10, or it can be not attached, as long as it can catch the leakage. A part of the leakage flows along the outer wall of the electrolytic cell body 10 to the leakage collection device 20, and a part of the leakage splashes outward and falls to the leakage collection device 20, burns through the cover plate 23 and is collected in the collection chamber 21.

[0033] The leakage collection device 20 is located below the cathode conductive rod of the electrolytic cell body 10, close to the bottom of the electrolytic cell body 10, so as to avoid the structure of the electrolytic cell body 10 and adapt to the position where leakage is likely to occur. In other embodiments, the leakage collection device can also be set at the corresponding position as needed, and the height of the leakage collection device can be set as needed, not limited to the area below the cathode conductive rod.

[0034] By installing a set of leakage collection device at the bottom of the electrolytic cell body, it is possible to effectively avoid uncontrollable damage and losses when aluminum leaks, and avoid large-scale vicious accidents caused by aluminum leakage. When the electrolytic cell leaks, the leakage collection device can be used as a container to collect high-temperature molten liquid, play the role of isolating combustibles, avoid further diffusion of combustibles, and reduce the risk of fire. After the high-temperature molten liquid flows into the leakage collection device, it can not only achieve rapid cooling, but also isolate the air, fundamentally preventing the occurrence of fire. When aluminum leaks, the high-temperature molten liquid is quickly collected and contained, avoiding damage to the surrounding tank structure, avoiding causing a large fire and damaging the overhead crane system that isolates the air and adds alumina covering materials, and reducing the further expansion of accidents and losses. The high-temperature molten liquid can quickly cool down when flowing in the leakage collection device, reducing thermal damage to the surrounding structures. The leakage collection device can be flexibly arranged according to the electrolytic cell body, is easy to disassemble, simple to install, and highly practical. It can quickly respond to aluminum leakage accidents and reduce accident handling time.

[0035] The use of the leakage collection device in conjunction with the electrolytic cell body not only improves the safety of aluminum electrolysis operations, but also provides additional safety protection for the life safety of aluminum industry workers and production equipment. It can significantly reduce safety risks in the aluminum electrolysis process, reduce economic losses, protect the environment, and contribute to the sustainable development of aluminum electrolysis technology.

[0036] Embodiment 2 of the electrolytic cell equipment of the present invention: The difference between this embodiment and the above-mentioned embodiment 1 lies in the arrangement of the collecting unit, such as Figure 5 , Figure 6 , Figure 7As shown, the shape of the collecting unit 22 from a top view is T-shaped, and the shapes of the collecting units are consistent, and the shape of the cover plate is adapted. The size of the part of the collecting unit box body close to the electrolytic cell body 10 is longer, and the size of the part away from the electrolytic cell body 10 is shorter. For the collecting unit located on one side of the width direction of the electrolytic cell body 10, the length direction of the collecting unit there is consistent with the length direction of the electrolytic cell, and the length of the part of the collecting unit close to the electrolytic cell body 10 is greater than the length of the part away from the electrolytic cell body 10. The two ends of the length direction of the smaller part of the collecting unit 22 extend to the adjacent two column busbars respectively, and the two ends of the length direction of the larger part of the adjacent two collecting units are connected on the inner side of the corresponding column busbars. The adjacent two collecting units 22 located on one side of the width direction of the electrolytic cell body 10 form a space between their smaller length parts to avoid the column busbar 11, so that the collecting chamber has a part that exceeds the column busbar in the direction away from the electrolytic cell body, which is convenient for arranging larger-sized collecting units. The collecting chamber can avoid the column busbar without being affected by the busbar position, and the volume of the collecting chamber can be increased.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electrolytic cell device, comprising an electrolytic cell body, wherein the electrolytic cell body has a space for containing molten electrolyte, wherein: The electrolytic cell equipment also includes a leakage collection device, which is arranged on the periphery of the electrolytic cell body and has a collection chamber. The collection chamber is provided with a leakage receiving port to allow leaked molten liquid to enter the collection chamber when the electrolytic cell body leaks.

2. The electrolytic cell equipment according to claim 1, characterized in that: The leakage collection device comprises a top cover for covering the leakage receiving port. When the electrolytic cell body leaks, the leaked molten liquid falls onto the top cover, burns through the top cover and enters the collection chamber.

3. The electrolytic cell equipment according to claim 2, characterized in that: The electrolytic cell equipment is used for aluminum electrolysis production, and the top cover is made of aluminum.

4. The electrolytic cell equipment according to claim 1, 2 or 3, characterized in that: A plurality of collecting chambers are arranged at intervals.

5. The electrolytic cell equipment according to claim 4, characterized in that: The leakage collection device has a communication port for connecting two adjacent collection chambers.

6. The electrolytic cell equipment according to claim 4, characterized in that: There are multiple collecting chambers located on the same side of the electrolytic cell body.

7. The electrolytic cell equipment according to claim 4, characterized in that: The electrolytic cell body is provided with collecting chambers all around.

8. The electrolytic cell equipment according to claim 1, 2 or 3, characterized in that: The leakage collection device comprises a plurality of collection units, each of which is provided with the collection chamber, and the collection units are detachably connected.

9. The electrolytic cell equipment according to claim 8, characterized in that: A roller is arranged at the bottom of the collecting unit.

10. The electrolytic cell equipment according to claim 1, 2 or 3, characterized in that: The leakage collection device is located below the cathode conductive rod of the electrolytic cell body.

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