Aluminum electrolysis cell system with current dynamic distribution function

Abstract

The utility model discloses a kind of aluminum electrolysis cell systems with current dynamic distribution function, belong to molten salt aluminum electrolysis metallurgical production technical field.The aluminum electrolysis cell system mainly includes controller, current transmission module, anode bus module, electrolytic cell module and prebaked anode monitorer.Wherein, the controller is connected with an external power module;The controller is connected with current transmission module, and AC / DC converter is provided in the current transmission module;The output of the AC / DC converter is directly or indirectly connected with direct-current energy storage device;The output of the direct-current energy storage device is directly or indirectly provided with anode bus module;The chemical reaction end of the prebaked anode is equipped with electrolytic cell module;The receiving end of the controller is connected with prebaked anode monitorer.The utility model compared with prior art, effectively reduce the degree of direct-current current invalid loss, in one aspect, the stability of chemical reaction in electrolytic cell module is enhanced, therefore, it has higher practicality.

Description

Technical Field

[0001] This utility model relates to the field of molten salt aluminum electrolytic metallurgical production technology, and in particular to an aluminum electrolytic cell system with dynamic current distribution function. Background Technology

[0002] In the industrial production of aluminum, electrolytic reduction is the dominant method. Its core process involves dissolving alumina raw materials in a molten salt electrolyte and using direct current to reduce aluminum ions. During this electrolysis, the alternating current supplied by an external power module is transmitted to the anode bus module via a controller and current transmission module. An electrochemical reaction occurring on the prebaked anode surface in this anode bus module drives the decomposition of alumina molecules: in the anode region, carbon materials combine with oxygen ions to generate CO2 / CO gas; in the cathode region, aluminum ions gain electrons through the cathode substrate and are reduced to metallic aluminum, depositing at the bottom of the electrolytic cell module to form a liquid aluminum layer.

[0003] Existing aluminum electrolysis technology is limited by the thermal balance control requirements of the electrolytic cell module. In actual production, the DC current intensity input to the electrolytic cell module usually needs to be maintained at a redundancy of 10%-15% of the rated value. This excessive power supply mode generally leads to some DC current being ineffectively lost in the form of Joule heat. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an aluminum electrolysis cell system with dynamic current distribution, primarily comprising a controller, a current transmission module, an anode bus module, an electrolysis cell module, and a prebaked anode monitor. During operation, the controller can control the amount of DC current transmitted from the current transmission module to the prebaked anode module based on the consumption at the chemical reaction end of the prebaked anode. Compared to existing technologies, this utility model effectively reduces the degree of ineffective DC current loss, thereby enhancing the stability of the chemical reaction within the electrolysis cell module, thus possessing high practicality.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An aluminum electrolysis cell system with dynamic current distribution function includes:

[0007] A controller, connected to an external power module, is used to transmit alternating current to other components and monitor the operation of other components.

[0008] A current transmission module, connected to the controller, includes:

[0009] AC / DC converter;

[0010] A DC energy storage device, the receiving end of which is directly or indirectly connected to the AC / DC converter, is used to store the DC current converted by the AC / DC converter;

[0011] An anode bus module, the receiving end of which is directly or indirectly connected to the output end of the DC energy storage device, is provided with a prebaked anode in the anode bus module;

[0012] An electrolytic cell module is located at the chemical reaction end of the prebaked anode;

[0013] in,

[0014] The receiver of the controller is connected to a prebaked anode monitor, which is used to detect the consumption of the prebaked anode chemical reaction end in real time.

[0015] Furthermore, the current transmission module also includes:

[0016] Input filter;

[0017] The receiving end of the input filter is directly or indirectly connected to the controller, and the output end of the input filter is connected to the AC / DC converter. The input filter is used to filter out the harmonic components of the AC current entering the current transmission module.

[0018] Furthermore, the current transmission module also includes:

[0019] DC / DC converter;

[0020] The receiving end of the DC / DC converter is connected to the AC / DC converter, and the output end of the DC / DC converter is connected to the DC energy storage device. The DC / DC converter is used to adjust the corresponding parameters of the DC current transmitted by the controller to the anode bus module.

[0021] Furthermore, the current transmission module also includes:

[0022] AC circuit breaker;

[0023] The receiving end of the AC circuit breaker is directly or indirectly connected to the controller, and the output end of the AC circuit breaker is connected to the input filter. The AC circuit breaker is used to prevent the controller from transmitting AC current to the current transmission module.

[0024] Furthermore, the current transmission module also includes:

[0025] DC circuit breaker;

[0026] The receiving end of the DC circuit breaker is connected to the DC energy storage device, and the output end of the DC circuit breaker is directly or indirectly connected to the anode bus module. The DC circuit breaker is used to prevent the DC current in the DC energy storage device from being transmitted to the anode bus module.

[0027] Furthermore, the anode bus module includes:

[0028] Anode busbar;

[0029] The receiving end of the anode busbar is connected to the output end of the current transmission module, and the output end of the anode busbar is directly or indirectly connected to the prebaked anode.

[0030] Furthermore, the anode bus module also includes:

[0031] Current guiding unit;

[0032] The receiving end of the current guiding unit is connected to the anode bus, and the output end of the current guiding unit is connected to the prebaked anode.

[0033] Furthermore, the aluminum electrolysis cell system with dynamic current distribution function also includes:

[0034] Lifting module;

[0035] The receiving end of the lifting module is connected to the output end of the controller, and the lifting module is used to move the anode busbar module up and down;

[0036] In use, the controller can adjust the lifting module to raise or lower the anode bus module based on the consumption status of the prebaked anode chemical reaction end transmitted in real time by the prebaked anode monitor.

[0037] Furthermore, the aluminum electrolysis cell system with dynamic current distribution function also includes:

[0038] An alarm, the receiver of which is connected to the output of the controller.

[0039] Furthermore, the alarm is an audible and visual alarm.

[0040] The beneficial effects of this utility model are:

[0041] The aluminum electrolysis cell system with dynamic current distribution function provided by this utility model is equipped with a current transmission module and a prebaked anode monitor. The controller can obtain the consumption status of the chemical reaction end of the prebaked anode in real time through the prebaked anode monitor and send instructions to the current transmission module accordingly. At this time, the current transmission module can be precisely controlled to transmit only the required amount of DC current, and the excess DC current obtained by the current transmission module is stored in the DC energy storage device. If the power module stops supplying power, the DC current stored in the current transmission module can maintain the chemical reaction in this utility model for a period of time. This design effectively reduces the degree of ineffective DC current loss and enhances the stability of the chemical reaction in the electrolysis cell module. Attached Figure Description

[0042] Figure 1 This is a general principle block diagram of the present invention;

[0043] Figure 2 This is a schematic block diagram of the current transmission module of this utility model;

[0044] Figure 3 This is a schematic diagram of the anode busbar module of this utility model.

[0045] Figure label:

[0046] 1. Power module;

[0047] 2. Controller;

[0048] 3. Current transmission module; 31. AC circuit breaker; 32. Input filter; 33. AC / DC converter; 34. DC / DC converter; 35. DC energy storage device; 36. DC circuit breaker;

[0049] 4. Anode busbar module; 41. Anode busbar; 42. Current guiding unit; 43. Prebaked anode;

[0050] 5. Electrolytic cell module;

[0051] 6. Prebaked anode monitor;

[0052] 7. Lifting module;

[0053] 8. Alarm device. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the present utility model, but are not intended to limit the present utility model.

[0055] Example 1

[0056] As attached Figure 1-3 As shown, this embodiment discloses an aluminum electrolysis cell system with dynamic current distribution function to avoid ineffective loss of DC current. It mainly includes: a controller 2, a current transmission module 3, an anode bus module 4, an electrolysis cell module 5, and a prebaked anode monitor 6. In use, the controller 2 is first connected to an external power supply module 1; then, the power supply module 1 transmits AC current to the current transmission module 3 via the controller 2; next, the AC / DC converter 33 in the current transmission module 3 converts the AC current to DC current; then, the AC / DC converter 33 transmits the converted DC current to the anode bus module 4 via a DC energy storage device 35; then, the anode bus module 4 transmits the DC current to the electrolysis cell module 5 for a corresponding chemical reaction to form a liquid aluminum layer; during this process, the prebaked anode monitor 6 can monitor the anode bus module in real time. The consumption status of the prebaked anode 43 at the chemical reaction end is monitored; then, this consumption status is transmitted to the controller 2 in real time; next, the controller 2 can send corresponding instructions to the current transmission module 3 according to the current situation, so as to precisely control the current transmission module 3 to transmit only the amount of DC current required for the current chemical reaction, and the excess DC current received by the current transmission module 3 is stored in the DC energy storage device 35; if the power module 1 stops supplying power, the DC current stored in the current transmission module 3 can maintain the chemical reaction in this embodiment for a period of time. This design effectively reduces the degree of DC current ineffective loss.

[0057] The specific architecture of the aluminum electrolytic cell system with dynamic current distribution function is as follows: It includes a controller 2, which is connected to an external power supply module 1; the controller 2 is connected to a current transmission module 3, which contains an AC / DC converter 33; the output of the AC / DC converter 33 is directly or indirectly connected to a DC energy storage device 35; the output of the DC energy storage device 35 is directly or indirectly connected to an anode bus module 4, which contains a prebaked anode 43; the chemical reaction end of the prebaked anode 43 is connected to an electrolytic cell module 5; and the receiving end of the controller 2 is connected to a prebaked anode monitor 6. Compared with the prior art, this invention effectively reduces the degree of ineffective DC current loss and enhances the stability of the chemical reaction in the electrolytic cell module 5, thus possessing high practicality.

[0058] In a specific application scenario, the receiving end of the aforementioned AC / DC converter 33 is equipped with an input filter 32, and the receiving end of the input filter 32 is directly or indirectly connected to the controller 2.

[0059] In actual use, the input filter 32 first filters out the harmonic part of the AC current in the input current transmission module 3; then, the AC current flows into the AC / DC converter 33; then, the AC / DC converter 33 converts the AC current into DC current; then, the DC current flows into the DC energy storage device 35 for storage. This design can obtain a more stable DC current.

[0060] Furthermore, the current transmission module 3 is also equipped with a DC / DC converter 34; specifically, the receiving end of the DC / DC converter 34 is connected to the AC / DC converter 33, and the output end of the DC / DC converter 34 is connected to the DC energy storage device 35.

[0061] In practical use, the AC / DC converter 33 first converts the alternating current into a direct current and transmits it to the DC / DC converter 34. Then, the DC / DC converter 34 can adjust the corresponding parameters of the direct current transmitted by the AC / DC converter 33 in real time according to the rate of chemical reaction in the current electrolytic cell module 5. Next, the adjusted direct current is transmitted to the DC energy storage device 35 for storage. Then, the DC energy storage device 35 transmits the direct current to the anode bus module 4. This design can make the chemical reaction in the electrolytic cell module 5 more stable and improve the aluminum production effect of this embodiment to a certain extent.

[0062] Furthermore, the current transmission module 3 is also equipped with an AC circuit breaker 31; specifically, the receiving end of the AC circuit breaker 31 is directly or indirectly connected to the controller 2, and the output end of the AC circuit breaker 31 is connected to the input filter 32.

[0063] In actual use, if the rate of chemical reaction in electrolytic cell module 5 and the storage capacity of DC energy storage device 35 have both reached their peak, controller 2 will issue an opening command to AC circuit breaker 31. Then, AC circuit breaker 31 will quickly cut off the circuit between current transmission module 3 and power supply module 1 to prevent power supply module 1 from continuing to transmit AC current to current transmission module 3 through controller 2, thereby damaging current transmission module 3, anode bus module 4 and electrolytic cell module 5. At this time, power supply module 1 can also transmit AC current to other components through controller 2, such as transmitting AC current to prebaked anode monitor 6, thereby maintaining the normal operation of prebaked anode monitor 6.

[0064] Furthermore, the current transmission module 3 is also equipped with a DC circuit breaker 36; specifically, the receiving end of the DC circuit breaker 36 is connected to the DC energy storage device 35, and the output end of the DC circuit breaker 36 is directly or indirectly connected to the anode bus module 4.

[0065] In actual use, if the DC energy storage device 35 malfunctions, the DC current transmitted from the DC energy storage device 35 to the anode bus module 4 may become unstable, thereby affecting the normal progress of the chemical reaction in the electrolytic cell module 5. At this time, the controller 2 simultaneously sends an opening command to the DC circuit breaker 36 and the AC circuit breaker 31. Then, the DC circuit breaker 36 will quickly cut off the circuit between the current transmission module 3 and the anode bus module 4 to prevent the current transmission module 3 from transmitting DC current to the anode bus module 4 and causing damage to it.

[0066] In a specific application scenario, the anode bus module 4 is provided with an anode bus 41; the receiving end of the anode bus 41 is connected to the output end of the current transmission module 3, and the output end of the anode bus 41 is directly or indirectly connected to the receiving end of the prebaked anode 43.

[0067] In actual use, the current transmission module 3 first transmits the DC current to the anode bus 41; then, the anode bus 41 transmits the received DC current to the prebaked anode 43; then, the prebaked anode 43 reacts chemically with the alumina, molten salt electrolyte, and cathode lining in the cathode area of ​​the electrolytic cell module 5 through the DC current; after a period of time, a liquid aluminum layer will be formed at the bottom of the electrolytic cell module 5, that is, the liquid aluminum layer is located on top of the cathode lining.

[0068] Furthermore, the anode bus module 4 is also equipped with a current guiding unit 42. Specifically, the receiving end of the current guiding unit 42 is provided with the anode bus 41, and the output end of the current guiding unit 42 is provided with the prebaked anode 43. That is, the current guiding unit 42 is located between the anode bus 41 and the prebaked anode 43. This design optimizes the conductivity and current distribution, achieving efficient and stable current transmission and structural support, and to a certain extent improving the aluminum production effect of this embodiment. The current guiding unit 42 mentioned in this paragraph is a metal guide rod. That is, in the actual implementation, the operator vertically sets the metal guide rod at the top of the prebaked anode, and then sets the anode bus on the metal guide rod.

[0069] Example 2

[0070] As attached Figure 1 As shown, this embodiment discloses an aluminum electrolysis cell system with dynamic current distribution function, which is used to automatically adjust the distance between the prebaked anode 43 and the electrolysis cell module 5. In addition to the components in the aforementioned embodiment 1, it also includes a lifting module 7; specifically, the receiving end of the lifting module 7 is connected to the output end of the controller 2.

[0071] In actual use, the controller 2 can adjust the distance between the prebaked anode 43 and the electrolytic cell module 5 by raising or lowering the lifting module 7 with the anode bus module 4 according to the consumption status of the chemical reaction end transmitted in real time by the prebaked anode monitor 6. This can optimize the effect of chemical reaction in the electrolytic cell module 5.

[0072] This embodiment also considers a scenario, specifically as follows: an alarm 8 is installed at the output of the aforementioned controller 2; when the lifting module 7 fails to move the prebaked anode 43 up and down, the chemical reaction in the electrolytic cell module 5 cannot proceed normally; the lifting module 7 can feed back the corresponding information to the controller 2, and the controller 2 sends a start-up command to the alarm 8; then, the alarm 8 sounds an alarm to alert nearby professionals to take appropriate action. Alternatively, staff can use an audible and visual alarm. This design allows relevant professionals to quickly become aware of a malfunction in the lifting module 7, which helps reduce costs in the aluminum production process.

[0073] The above description is merely an optional embodiment of this utility model and is not intended to limit the utility model. For those skilled in the art, various modifications and variations can be made to the embodiments of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An aluminum electrolytic cell system with dynamic current distribution function, characterized in that, include: The controller (2) is connected to an external power supply module (1). The controller (2) is used to transmit AC current to other components and monitor the operation of other components. A current transmission module (3) is connected to the controller (2). The current transmission module (3) includes: an AC / DC converter (33); a DC energy storage device (35), whose receiving end is directly or indirectly connected to the AC / DC converter (33), and the DC energy storage device (35) is used to store the DC current converted by the AC / DC converter (33); an anode bus module (4), whose receiving end is directly or indirectly connected to the output end of the DC energy storage device (35), and the anode bus module (4) is provided with a prebaked anode (43); an electrolytic cell module (5), which is set at the chemical reaction end of the prebaked anode (43); wherein, the receiving end of the controller (2) is connected to a prebaked anode monitor (6), and the prebaked anode monitor (6) is used to detect the consumption of the chemical reaction end of the prebaked anode (43) in real time.

2. The aluminum electrolytic cell system with dynamic current distribution function according to claim 1, characterized in that, The current transmission module (3) further includes an input filter (32); the receiving end of the input filter (32) is directly or indirectly connected to the controller (2), and the output end of the input filter (32) is connected to the AC / DC converter (33). The input filter (32) is used to filter out the harmonic part of the AC current transmitted into the current transmission module (3).

3. The aluminum electrolytic cell system with dynamic current distribution function according to claim 2, characterized in that, The current transmission module (3) further includes a DC / DC converter (34); the receiving end of the DC / DC converter (34) is connected to the AC / DC converter (33), the output end of the DC / DC converter (34) is connected to the DC energy storage device (35), and the DC / DC converter (34) is used to adjust the corresponding parameters of the DC current transmitted by the controller (2) to the anode bus module (4).

4. The aluminum electrolytic cell system with dynamic current distribution function according to claim 2 or claim 3, characterized in that, The current transmission module (3) further includes an AC circuit breaker (31); the receiving end of the AC circuit breaker (31) is directly or indirectly connected to the controller (2), the output end of the AC circuit breaker (31) is connected to the input filter (32), and the AC circuit breaker (31) is used to prevent the controller (2) from transmitting AC current to the current transmission module (3).

5. The aluminum electrolytic cell system with dynamic current distribution function according to claim 2 or claim 3, characterized in that, The current transmission module (3) further includes: a DC circuit breaker (36); the receiving end of the DC circuit breaker (36) is connected to the DC energy storage device (35), and the output end of the DC circuit breaker (36) is directly or indirectly connected to the anode bus module (4). The DC circuit breaker (36) is used to prevent the DC current in the DC energy storage device (35) from being transmitted to the anode bus module (4).

6. The aluminum electrolytic cell system with dynamic current distribution function according to any one of claims 1-3, characterized in that, The anode bus module (4) includes: an anode bus (41); the receiving end of the anode bus (41) is connected to the output end of the current transmission module (3), and the output end of the anode bus (41) is directly or indirectly connected to the prebaked anode (43).

7. The aluminum electrolytic cell system with dynamic current distribution function according to claim 6, characterized in that, The anode bus module (4) further includes a current guiding unit (42); the receiving end of the current guiding unit (42) is connected to the anode bus (41), and the output end of the current guiding unit (42) is connected to the prebaked anode (43).

8. The aluminum electrolytic cell system with dynamic current distribution function according to claim 7, characterized in that, Also includes: Lifting module (7); The receiving end of the lifting module (7) is connected to the output end of the controller (2). The lifting module (7) is used to move the anode bus module (4) up and down. When in use, the controller (2) can make the lifting module (7) carry the anode bus module (4) up or down according to the consumption status of the chemical reaction end of the prebaked anode (43) transmitted in real time by the prebaked anode monitor (6).

9. The aluminum electrolytic cell system with dynamic current distribution function according to any one of claims 1-3, 7, or 8, characterized in that, Also includes: The alarm (8) has its receiver connected to the output of the controller (2).

10. The aluminum electrolytic cell system with dynamic current distribution function according to claim 9, characterized in that, The alarm (8) is an audible and visual alarm.

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