Electrolytic tank ash removal device

Abstract

The utility model provides an electrolytic tank ash removal device which is applied to an electrolytic tank flue and comprises a main gas supply pipeline and a plurality of branch gas supply pipelines. The main air supply pipeline is used for connecting an air source; the plurality of branch gas supply pipelines are arranged in the electrolytic cell flue at intervals and are respectively communicated with the main gas supply pipeline; the air outlet of each branch air supply pipeline is provided with a spray head, and the spray heads on every two adjacent branch air supply pipelines are arranged in a staggered mode. Compared with the prior art that the sprayers on the two adjacent branch air supply pipelines are flush, the sprayers on the two adjacent branch air supply pipelines in the multiple branch air supply pipelines arranged on the electrolytic cell flue at intervals are arranged in a staggered mode, the air purging range can be effectively expanded, accumulated dust in the electrolytic cell flue can be fully cleaned, and the cleaning efficiency is improved. And more accumulated dust is prevented from staying in the flue of the electrolytic cell to influence the gas collection effect of the flue of the electrolytic cell. Therefore, by means of the scheme, accumulated dust in the flue can be effectively cleaned, and the gas collection effect of the flue of the electrolytic cell is improved.

Description

Technical Field

[0001] The present application relates to the technical field of public auxiliary technology for aluminum electrolysis, and in particular to an electrolytic cell cleaning device. Background Art

[0002] Electrolytic aluminum is a production process for producing metallic aluminum by electrolytic reduction in a cryolite-alumina molten salt system. Simply put, molten cryolite is added as a solvent and alumina as a solute in an electrolytic cell, a carbon body is used as an anode, and aluminum liquid is used as a cathode. After a strong direct current is passed through, an electrochemical reaction can occur at the two electrodes in the electrolytic cell at high temperature to produce aluminum.

[0003] During the operation of the electrolytic cell, a large amount of flue gas is generated. The dust in the flue gas is easily deposited in the flue of the electrolytic cell to form ash, causing the flue of the electrolytic cell to be blocked. In the related art, compressed air is usually used to purge the flue of the electrolytic cell. However, the existing purge method cannot fully clean the ash in the flue of the electrolytic cell, and there is still a lot of ash remaining in the flue of the electrolytic cell, affecting the gas collection effect of the flue of the electrolytic cell. Utility Model Content

[0004] The present application provides an electrolytic cell cleaning device, which can effectively clean the accumulated dust in the flue and improve the gas collection effect of the electrolytic cell flue.

[0005] The present application provides an electrolytic cell ash cleaning device, which is applied to the flue of the electrolytic cell, comprising:

[0006] Main gas supply pipeline, used to connect to the gas source;

[0007] A plurality of branch gas supply pipes are arranged at intervals in the electrolytic cell flue and are respectively connected to the main gas supply pipe; a nozzle is provided at the gas outlet of each branch gas supply pipe, and the nozzles on two adjacent branch gas supply pipes are staggered.

[0008] The solution provided in the embodiment of the present application effectively expands the range of air purge by staggering the nozzles on two adjacent sub-gas supply pipes among the multiple sub-gas supply pipes spaced apart in the flue of the electrolytic cell, compared with the previous flush arrangement of the nozzles on the two adjacent sub-gas supply pipes, so that the dust accumulation in the flue of the electrolytic cell can be cleaned more fully, and a large amount of dust accumulation can be avoided from staying in the flue of the electrolytic cell, which affects the gas collection effect of the flue of the electrolytic cell. It can be seen that the dust accumulation in the flue can be effectively cleaned through this solution, and the gas collection effect of the flue of the electrolytic cell can be improved.

[0009] In some possible implementations, the branch gas supply pipeline includes a fixed section and a telescopic section connected to the fixed section;

[0010] The fixed section is connected to the main gas supply pipeline; the telescopic section can be telescoped along a direction perpendicular to the axis of the electrolytic cell flue.

[0011] In combination with the above implementations, in some possible implementations, the fixed section is provided with a regulating valve;

[0012] The electrolytic tank cleaning device also includes:

[0013] The controller is electrically connected to the regulating valve and is used to control the opening of the regulating valve.

[0014] In combination with the above implementations, in some possible implementations, the electrolytic cell cleaning device further includes:

[0015] A driving member is connected to the telescopic section and electrically connected to the controller, and is used to drive the telescopic movement of the telescopic section.

[0016] In combination with the above implementations, in some possible implementations, the electrolytic cell cleaning device further includes:

[0017] Two negative pressure sensors are electrically connected to the controller, and the two negative pressure sensors are respectively arranged at the smoke inlet and the smoke outlet of the electrolytic cell flue to detect the patency of the electrolytic cell flue.

[0018] In combination with the above implementations, in some possible implementations, the electrolytic cell cleaning device further includes:

[0019] A flow sensor is electrically connected to the controller. For each of the sub-gas supply pipelines, a plurality of the flow sensors are provided on the peripheral wall of the electrolytic cell flue corresponding to the sub-gas supply pipeline.

[0020] In combination with the above implementations, in some possible implementations, the electrolytic cell cleaning device further includes:

[0021] The rapping mechanism is arranged on the inner wall of the flue of the electrolytic cell and is electrically connected to the controller.

[0022] In combination with the above implementations, in some possible implementations, the electrolytic cell flue includes a beam flue and a trough flue;

[0023] The beam flue and the trough flue are both provided with a plurality of the branch air supply pipes, and the number of the branch air supply pipes in the trough flue is greater than the number of the branch air supply pipes in the beam flue. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the embodiments below. The accompanying drawings are only for the purpose of illustrating the embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0025] Figure 1 It is a structural schematic diagram of an electrolytic cell cleaning device provided in an embodiment of the present application.

[0026] The description of the reference numerals in the figures is as follows:

[0027] 10—gas source; 100—electrolyzer flue;

[0028] 1—Main gas supply pipeline;

[0029] 2—gas supply pipeline; 21—fixed section; 221—regulating valve; 22—expansion section; 23—sprinkler;

[0030] 3—Controller;

[0031] 4—Negative pressure sensor. DETAILED DESCRIPTION

[0032] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0033] During the operation of the electrolytic cell, a large amount of flue gas is generated. The dust in the flue gas is easily deposited in the flue of the electrolytic cell to form ash, causing the flue of the electrolytic cell to be blocked. In the related art, compressed air is usually used to purge the flue of the electrolytic cell. However, the existing purge method cannot fully clean the ash in the flue of the electrolytic cell, and there is still a lot of ash remaining in the flue of the electrolytic cell, affecting the gas collection effect of the flue of the electrolytic cell.

[0034] In order to solve the above technical problems, the present application provides an electrolytic cell cleaning device. The following is a detailed introduction of an electrolytic cell cleaning device provided in the present application with reference to the accompanying drawings.

[0035] Please refer to Figure 1 The present application proposes an electrolytic cell cleaning device, which is applied to an electrolytic cell flue 100, and includes a main gas supply pipeline 1 and multiple branch gas supply pipelines 2; the main gas supply pipeline 1 is used to connect to a gas source 10; multiple branch gas supply pipelines 2 are arranged at intervals in the electrolytic cell flue 100, and are respectively connected to the main gas supply pipeline 1; each branch gas supply pipeline 2 is provided with a nozzle 23 at the gas outlet, and the nozzles 23 on two adjacent branch gas supply pipelines 2 are staggered.

[0036] The solution provided in the embodiment of the present application effectively expands the range of air purge by staggering the nozzles 23 on two adjacent sub-gas supply pipes 2 among the multiple sub-gas supply pipes 2 spaced apart in the electrolytic cell flue 100, compared with the previous flush arrangement of the nozzles 23 on the two adjacent sub-gas supply pipes 2, so that the dust accumulation in the electrolytic cell flue 100 can be cleaned more fully, and a large amount of dust accumulation can be avoided from staying in the electrolytic cell flue 100, affecting the gas collection effect of the electrolytic cell flue 100. It can be seen that the dust accumulation in the flue can be effectively cleaned through this solution, and the gas collection effect of the electrolytic cell flue 100 can be improved.

[0037] The following combination Figure 1 The specific structure of the electrolytic cell cleaning device is introduced in detail.

[0038] The gas source 10 is provided by the air compression station of the aluminum electrolysis workshop. The main gas supply pipeline 1 can be laid on the electrolytic cell. The length of the main gas supply pipeline 1 is determined according to the length of the electrolytic cell. Generally, it can be laid for 20 to 30 meters. For example, a 24-meter-long main gas supply pipeline 1 can be laid on the electrolytic cell. The main gas supply pipeline 1 can be made of galvanized pipes. The anti-rust cost of galvanized pipes is lower than that of other paints and coatings, and the surface is smooth, the zinc layer is uniform, and it has strong corrosion resistance. It has the advantages of low processing cost, durability, and high reliability. The inner diameter of the galvanized pipe can be determined according to actual needs. For example, a DN32 galvanized pipe can be selected. One end of the main gas supply pipeline 1 is blocked by a plug, and the other end is connected to the gas outlet end of the gas source 10. Installation ports can be opened on the main gas supply pipeline 1 at a preset distance (for example, 20 cm).

[0039] See also Figure 1 , the gas distribution pipe 2 is installed in the electrolytic cell flue 100. The arrow direction in the electrolytic cell flue 100 is the flow direction of the flue gas. The electrolytic cell flue 100 includes a beam flue and a trough flue; the beam flue and the trough flue are both provided with a plurality of gas distribution pipes 2, and the number of gas distribution pipes 2 in the trough flue is greater than the number of gas distribution pipes 2 in the beam flue. For example, two gas distribution pipes 2 can be provided in the trough flue, and six gas distribution pipes 2 can be provided in the trough flue. One end of the gas distribution pipe 2 is installed at the installation port, and the other end is provided with a nozzle 23.

[0040] There are many ways to implement the staggered arrangement of the nozzles 23 on two adjacent sub-gas supply pipes 2 among the multiple sub-gas supply pipes 2. In some examples of the present application, the pipe lengths of two adjacent sub-gas supply pipes 2 can be set to different lengths, so that the nozzles 23 are installed at the ends of the sub-gas supply pipes 2 of different lengths to form a staggered structure. In other embodiments of the present application, the sub-gas supply pipes 2 can also be set to include a fixed section 21 and a telescopic section 22 connected to the fixed section 21; the fixed section 21 is connected to the main gas supply pipe 100; the telescopic section 22 can be telescoped in a direction perpendicular to the axis of the electrolytic cell flue 100. In this way, the nozzle 23 installed at the end of the telescopic section 22 can form a staggered structure by adjusting the length of the telescopic section 22. Since the nozzles 23 on two adjacent sub-gas supply pipes 2 among the multiple sub-gas supply pipes 2 are staggered, the range of air blowing is effectively expanded, so that the ash accumulation in the electrolytic cell flue 100 can be cleaned more fully, avoiding more ash accumulation in the electrolytic cell flue 100 and affecting the gas collection effect of the electrolytic cell flue 100.

[0041] Among them, the fixed section 21 can be made of a galvanized pipe with a diameter smaller than that of the main air supply pipeline 1, for example, a galvanized pipe of DN25. The telescopic section 22 can be made of a bellows, a metal hose, etc. Designers can select suitable materials, apertures, and pressure-resistant strength bellows, metal hoses, etc. to make the telescopic section 22 according to actual needs, and this application will not go into details. A regulating valve 221 can be installed on the fixed section 21. By setting different openings of the regulating valve 221, the flow rate of the branch air supply pipeline 2 can be controlled, and then the air flow rate sprayed by the nozzle 23 can be adjusted. The regulating valve 221 can be a solenoid valve, and a controller 3 can also be set at this time. By electrically connecting the controller 3 to the solenoid valve, the opening size of the solenoid valve can be remotely controlled, reducing the labor intensity of controlling the regulating valve 221.

[0042] In some embodiments of the present application, the electrolytic cell cleaning device may further include a driving member, which is connected to the telescopic section 22 and electrically connected to the controller 3, and is used to drive the telescopic section 22 to telescopically move. It is understandable that if the length of the sub-gas supply pipe 2 remains unchanged, some areas in the electrolytic cell flue 100 will not be effectively purged, thereby causing dust accumulation in this part of the area. In the embodiment of the present application, the telescopic section 22 is driven by the driving member to telescopically move, so that most areas of the electrolytic cell flue 100 can be effectively purged, further improving the cleaning effect, and more fully cleaning the dust accumulation in the electrolytic cell flue 100. Among them, the driving member can adopt a cylinder, an oil cylinder, an electric push rod or various transmission mechanisms driven by a motor, such as a gear rack transmission mechanism, a multi-link mechanism, a ball screw mechanism, etc. Designers can select a suitable driving member according to actual conditions, and this application will not elaborate on this.

[0043] In order to understand the patency of the electrolytic cell flue 100, in some embodiments of the present application, the electrolytic cell cleaning device further includes two negative pressure sensors 4, which are electrically connected to the controller 3. The two negative pressure sensors 4 are respectively arranged at the smoke inlet and the smoke outlet of the electrolytic cell flue 100, and are used to detect the patency of the electrolytic cell flue 100. It can be understood that by understanding the patency of the electrolytic cell flue 100, corresponding measures can be taken to improve the degree of the electrolytic cell flue 100. For example, when the controller 3 determines that the electrolytic cell flue 100 is blocked through the negative pressure sensor 4, the flow rate of the sub-gas supply pipeline 2 can be adjusted through the solenoid valve, and then the flow rate of the air sprayed by the nozzle 23 can be increased to reduce and eliminate the blockage.

[0044] It is understandable that when the electrolytic cell flue 100 is blocked, it is often a certain point of the electrolytic cell flue 100 that is blocked first, that is, a blocking point appears in the electrolytic cell flue 100. In order to determine the location of the blocking point in the electrolytic cell flue 100, in some embodiments of the present application, the electrolytic cell cleaning device also includes a flow sensor, and the flow sensor is electrically connected to the controller 3. For each branch gas supply pipeline 2, multiple flow sensors are provided on the peripheral wall of the electrolytic cell flue 100 corresponding to the branch gas supply pipeline 2. When the blocking point of the electrolytic cell flue 100 is determined by the flow sensor, the solenoid valve can be controlled by the controller 3 to adjust the flow of the branch gas supply pipeline 2, the flow rate of the air sprayed by the nozzle 23 can be adjusted, and the driving member can be controlled by the controller 3 to drive the telescopic section 22 to telescopic movement, so as to clear the blocking point of the electrolytic cell flue 100 and ensure the smooth operation of the electrolytic cell flue 100.

[0045] In addition, in order to further improve the gas collection effect of the electrolytic cell flue 100, in some embodiments of the present application, the electrolytic cell cleaning device may further include a rapping mechanism, which is arranged on the inner wall of the electrolytic cell flue 100 and is electrically connected to the controller 3. By knocking the inner wall of the electrolytic cell flue 100 with the rapping mechanism, the adhesion between the ash accumulation and the inner wall can be reduced, which is conducive to the nozzle to blow the ash accumulation. Among them, the rapping mechanism can adopt a cam structure, that is, by installing one or more cams on the transmission shaft of the reducer, when the cam rotates with the transmission shaft, the protrusion of the cam collides with the structural parts in the electrolytic cell flue 100, and the inner wall of the electrolytic cell flue 100 is knocked, and the cam can be rapped once or multiple times for each rotation of the cam. Of course, the rapping mechanism can also form vibration by means of vibrator excitation and the like. Designers can select a suitable rapping mechanism according to actual needs, and this application does not make specific restrictions on this.

[0046] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An electrolytic cell dust cleaning device, applied to an electrolytic cell flue (100), characterized in that: include: A main gas supply pipeline (1) for connecting to a gas source (10); A plurality of branch gas supply pipes (2) are arranged at intervals in the electrolytic cell flue (100) and are respectively connected to the main gas supply pipe; a nozzle (23) is provided at the gas outlet of each branch gas supply pipe (2), and the nozzles (23) on two adjacent branch gas supply pipes (2) are staggered.

2. The electrolytic cell cleaning device according to claim 1, characterized in that: The branch air supply pipeline (2) comprises a fixed section (21) and a telescopic section (22) connected to the fixed section (21); The fixed section (21) is connected to the main gas supply pipeline; the telescopic section (22) is capable of telescoping in a direction perpendicular to the axis of the electrolytic cell flue (100).

3. The electrolytic cell cleaning device according to claim 2, characterized in that: The fixed section (21) is provided with a regulating valve (221); The electrolytic tank cleaning device also includes: A controller (3) is electrically connected to the regulating valve (221) and is used to control the opening degree of the regulating valve (221).

4. The electrolytic cell cleaning device according to claim 3, characterized in that: The electrolytic tank cleaning device also includes: A driving member is connected to the telescopic section (22) and electrically connected to the controller (3), and is used to drive the telescopic movement of the telescopic section (22).

5. The electrolytic cell cleaning device according to claim 3, characterized in that: The electrolytic tank cleaning device also includes: Two negative pressure sensors (4) are electrically connected to the controller (3); the two negative pressure sensors (4) are respectively arranged at the smoke inlet and the smoke outlet of the electrolytic cell flue (100) and are used to detect the patency of the electrolytic cell flue (100).

6. The electrolytic cell cleaning device according to claim 5, characterized in that: The electrolytic tank cleaning device also includes: A flow sensor is electrically connected to the controller (3), and for each of the sub-gas supply pipes (2), a plurality of the flow sensors are provided on the peripheral wall of the electrolytic cell flue (100) corresponding to the sub-gas supply pipe (2).

7. The electrolytic cell cleaning device according to any one of claims 3 to 6, characterized in that: The electrolytic tank cleaning device also includes: A rapping mechanism is arranged on the inner wall of the electrolytic cell flue (100) and is electrically connected to the controller (3).

8. The electrolytic cell cleaning device according to claim 7, characterized in that: The electrolytic cell flue (100) comprises a beam flue and a trough flue; The beam flue and the trough flue are both provided with a plurality of the branch air supply pipes (2), and the number of the branch air supply pipes (2) in the trough flue is greater than the number of the branch air supply pipes (2) in the beam flue.

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