System for discharging volatile or evaporated gas generated by electrolysis of electrolytic bath

Abstract

The utility model belongs to the technical field of electrolytic baths, and particularly relates to a system for discharging volatile or evaporated gas generated by electrolysis of electrolytic baths, which comprises a bath body provided with a plurality of electrolytic baths; negative plates and positive plates which are alternately arranged are arranged in each electrolytic bath; the copper bar is arranged on the tank body, the cathode plate is electrically connected to a cathode of the copper bar, and the anode plate is electrically connected to an anode of the copper bar; the air draft device comprises a fan, a ventilation main pipe and a plurality of ventilation branch pipes, the ventilation branch pipes are arranged in one-to-one correspondence with the electrolytic cells, and each ventilation branch pipe is parallel to the length direction of the electrolytic cells; one end of the ventilation header pipe is communicated with an outlet of the fan, and the other end of the ventilation header pipe is communicated with the ventilation branch pipe. Therefore, the volatile or evaporated gas can be effectively removed, and the heat dissipation efficiency is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrolytic cells, and particularly relates to a gas emission system for volatilized or evaporated gases generated by electrolysis of an electrolytic cell. Background Art

[0002] During the electrolysis process, the electrolyte undergoes chemical reactions under the action of an electric current, generating various gases, including harmful gases and soot. Harmful substances in the volatilized or evaporated gases, such as sulfur dioxide, nitrogen oxides, fluorides, hydrogen chloride, etc., will pollute the atmosphere and exacerbate environmental problems such as acid rain and the greenhouse effect. The soot and particulate matter in the volatilized or evaporated gases will be suspended in the air, reducing the visibility in the workshop. Workers exposed to high concentrations of harmful gases for a long time are prone to occupational diseases such as respiratory diseases and skin diseases. Some harmful gases may also damage the nervous system, blood system, etc. of workers, posing a threat to the health of workers.

[0003] In the patent with the publication number CN102400181A, a method for replacing the electrodes of an aluminum electrolytic cell is disclosed. When replacing the spent anode during the aluminum electrolysis production process, after placing the spent anode on the anode tray, a tray cover with an exhaust pipe at the upper end is covered on the anode tray; carbon dioxide and volatilized fluoride salts released by the combustion of the spent anode are extracted through the exhaust pipe and collected for treatment.

[0004] However, it is found in actual application tests that since the entire device covers the entire electrolytic cell with a cover plate and then removes the volatilized or evaporated gases generated by the electrolytic cell by means of exhaust ventilation, the advantage is that effective collection of the volatilized or evaporated gases can be achieved. However, due to the complete covering of the electrolytic cell, a large amount of heat generated during the working process cannot be effectively dissipated, affecting the normal operation of the electrolytic cell. The high-temperature environment may not only reduce the electrolysis efficiency but also accelerate the aging of the internal components of the electrolytic cell, shortening the service life of the equipment. The electrolytic cell needs to be regularly inspected and maintained, including cleaning, replacing damaged components, etc. Since the electrolytic cell is completely covered, it will be difficult for maintenance personnel to approach the electrolytic cell to carry out these tasks, increasing the difficulty and cost of maintenance. Although covering can reduce the impact of the electrolytic cell on the external environment, it may also bring some safety hazards. For example, if the covering is airtight, it may cause the accumulation of combustible gases inside the electrolytic cell, increasing the risk of explosion and fire.

[0005] Therefore, a more reasonable technical solution is still needed to be able to effectively remove the volatilized or evaporated gases and ensure the heat dissipation efficiency. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a gas emission system for volatilized or evaporated gases generated by electrolysis of an electrolytic cell, so as to be able to effectively remove the volatilized or evaporated gases and ensure the heat dissipation efficiency.

[0007] To achieve the above object, the present utility model provides a gas emission system for the volatilized or evaporated gas generated by electrolysis in an electrolytic cell, comprising:

[0008] A cell body provided with a plurality of electrolytic cells; in each electrolytic cell, cathode plates and anode plates are alternately arranged;

[0009] Copper bars are arranged on the cell body, the cathode plates are electrically connected to the negative pole of the copper bars, and the anode plates are electrically connected to the positive pole of the copper bars; and

[0010] An air extraction device, comprising a fan, a ventilation main pipe and a plurality of ventilation branch pipes, the ventilation branch pipes are arranged in one-to-one correspondence with the electrolytic cells, and each ventilation branch pipe is parallel to the length direction of the electrolytic cell; one end of the ventilation main pipe is communicated with the outlet of the fan, and the other end is communicated with the ventilation branch pipes.

[0011] In a possible design, the ventilation branch pipe is provided with air outlet holes, and the air outlet holes are located on the side of the ventilation branch pipe.

[0012] In a possible design, a plurality of the air outlet holes are provided and are evenly spaced along the length direction of the ventilation branch pipe.

[0013] In a possible design, the gas emission system for the volatilized or evaporated gas generated by electrolysis in the electrolytic cell further comprises a cover plate, the cover plate is formed into a structure adapted to the longitudinal section of the electrolytic cell and is placed in the electrolytic cell; the cover plate is slidably connected to the cell body so as to be able to remove the crystals on the ventilation branch pipes.

[0014] In a possible design, the copper bars are arranged adjacent to the ventilation branch pipes.

[0015] In a possible design, the longitudinal section of the ventilation main pipe is square, and the longitudinal section of the ventilation branch pipe is square.

[0016] In a possible design, the ventilation main pipe and the ventilation branch pipes are detachably connected to the cell body.

[0017] Setting up multiple electrolytic cells can improve production efficiency. At the same time, each electrolytic cell works independently, which is convenient for management and maintenance. The cathode plate and the anode plate are respectively connected to the positive and negative poles of the copper busbar, ensuring the smooth progress of the electrolysis process. The system includes a fan, a main ventilation duct, and multiple ventilation branch ducts. Through the suction effect of the fan, the volatilized or evaporated gases generated during the electrolysis process are effectively discharged. Each ventilation branch duct is arranged parallel to the length direction of the electrolytic cell, so that the generated negative pressure can fully act on the electrolytic cell, thereby quickly and effectively removing the gases and preventing the volatilized or evaporated gases from spreading in the workshop, ensuring a good operating environment. The enclosed main ventilation duct reduces the possibility of leakage of volatilized or evaporated gases and improves the efficiency of treating volatilized or evaporated gases.

[0018] Through the above technical solutions, based on the design of the exhaust device, the effective collection and discharge of volatilized or evaporated gases generated by electrolysis can be realized, greatly improving the workshop environment and protecting the health of workers. The design of the sliding cover plate of the perforated ventilation pipe makes the cleaning work of the electrolytic cell simple and fast, reducing the maintenance cost and difficulty. The setting of multiple electrolytic cells and the efficient volatilized or evaporated gas treatment system jointly ensure the continuity and stability of the production process, improve production efficiency, and reduce the pollution of volatilized or evaporated gases to the environment and potential safety hazards. In addition, based on the relatively open design of the entire exhaust device, the electrolytic cell can have better heat dissipation performance, thus helping the entire electrolysis process to proceed safely and reliably. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic three-dimensional structure diagram of the volatilized or evaporated gas emission system generated by electrolysis of the electrolytic cell provided by the present invention in an embodiment.

[0021] In the above drawings: 1 - tank body, 11 - electrolytic cell, 2 - copper busbar, 3 - exhaust device, 31 - fan, 32 - main ventilation duct, 33 - ventilation branch duct, 34 - air outlet hole, 4 - cover plate. Detailed Embodiments

[0022] The following will further elaborate on the present invention in conjunction with the drawings and specific embodiments. It should be noted here that the description of these embodiments is for helping to understand the present invention, but does not constitute a limitation to the present invention.

[0023] The specific structural and functional details disclosed herein are for describing only the embodiments of the examples of the present utility model. However, the present utility model can be embodied in many alternative forms and should not be construed as limited to the embodiments set forth herein.

[0024] According to a specific embodiment of the present disclosure, a gas emission system for volatilized or evaporated gases generated by electrolysis of an electrolytic cell is provided. Among them, Figure 1 One of the specific embodiments is shown.

[0025] Referring to Figure 1 As shown, the gas emission system for volatilized or evaporated gases generated by electrolysis of the electrolytic cell includes: a cell body 1 provided with a plurality of electrolytic cells 11; in each electrolytic cell 11, cathode plates and anode plates are alternately arranged; a copper busbar 2 is arranged on the cell body 1, the cathode plates are electrically connected to the negative pole of the copper busbar 2, and the anode plates are electrically connected to the positive pole of the copper busbar 2; and an air extraction device 3, including a fan 31, a ventilation main pipe 32 and a plurality of ventilation branch pipes 33. The ventilation branch pipes 33 are arranged in one-to-one correspondence with the electrolytic cells 11, and each ventilation branch pipe 33 is parallel to the length direction of the electrolytic cell 11; one end of the ventilation main pipe 32 is communicated with the outlet of the fan 31, and the other end is communicated with the ventilation branch pipes 33, so that the negative pressure generated by the ventilation branch pipes 33 can effectively extract the volatilized gases during the electrolysis process of the electrolytic cell 11.

[0026] Arranging a plurality of electrolytic cells 11 can improve production efficiency. At the same time, each electrolytic cell 11 works independently, which is convenient for management and maintenance. The cathode plates and anode plates are respectively connected to the positive and negative poles of the copper busbar 2, ensuring the smooth progress of the electrolysis process. The system includes a fan 31, a ventilation main pipe 32 and a plurality of ventilation branch pipes 33. Through the suction action of the fan 31, the volatilized or evaporated gases generated during the electrolysis process are effectively discharged. Each ventilation branch pipe 33 is arranged parallel to the length direction of the electrolytic cell 11, so that the generated negative pressure can fully act on the electrolytic cell, thereby quickly and effectively extracting the gases, preventing the volatilized or evaporated gases from diffusing in the workshop, and ensuring a good operating environment. The closed ventilation main pipe 32 reduces the possibility of leakage of volatilized or evaporated gases and improves the efficiency of treating volatilized or evaporated gases.

[0027] Through the above technical scheme, based on the design of the exhaust device 3, the gas volatilized by the electrolytic cell 11 during the electrolysis process can be effectively extracted, and the volatilized or evaporated gas generated by electrolysis can be effectively collected and discharged, which greatly improves the workshop environment and protects the health of workers. The design of the sliding cover plate 4 with holes for ventilation pipes makes the cleaning work of the electrolytic cell 11 simple and quick, and reduces the maintenance cost and difficulty. The setting of multiple electrolytic cells 11 and the efficient volatilized or evaporated gas treatment system jointly ensure the continuity and stability of the production process, improve production efficiency, and reduce the pollution of the volatilized or evaporated gas to the environment and potential safety hazards. In addition, based on the relatively open design of the entire exhaust device 3, the electrolytic cell 11 can have better heat dissipation performance, thereby helping the entire electrolysis process to be carried out safely and reliably.

[0028] In one embodiment provided by the present disclosure, an air outlet 34 is provided on the ventilation branch pipe 33, and the air outlet 34 is located on the side of the ventilation branch pipe 33. The air outlet 34 is arranged on the side of the ventilation branch pipe 33, so that the negative pressure generated by the fan 31 can quickly and effectively extract the volatilized gas in the electrolytic cell 11. In this way, not only can the volatilized or evaporated gas generated by the electrolytic cell 11 be more effectively discharged, but also the diffusion and retention of the volatilized or evaporated gas in the workshop can be reduced, further improving the workshop environment.

[0029] At the same time, since the volatile gas will diffuse from different directions after being generated, an air outlet 34 is provided on the side of the ventilation branch pipe so that the generated negative pressure can act quickly and directly on the electrolytic cell 11 to achieve effective removal of the gas.

[0030] Since the ventilation branch pipe 33 is provided with an air outlet 34, special attention should be paid to its sealing to prevent the volatilized or evaporated gas from leaking out from the parts other than the air outlet 34. Sealing materials can be used to reinforce the area around the air outlet 34 to ensure the stability of the negative pressure.

[0031] Specifically, the air outlet holes 34 are provided in multiple numbers and are evenly spaced along the length direction of the ventilation branch pipe 33, so that the gas can act completely and evenly on the entire electrolytic cell 11 during the extraction process. In this way, no matter where the volatilized or evaporated gas is generated in the electrolytic cell 11, it can be promptly and effectively extracted, thereby improving the efficiency of removing the volatilized or evaporated gas.

[0032] In addition, the evenly spaced arrangement of the air outlet holes 34 also helps to improve the stability of the entire ventilation system, which helps to quickly and effectively remove the volatilized or evaporated gases, avoiding the problem of excessively high or low concentrations of volatilized or evaporated gases in local areas due to diffusion in the workshop, effectively reducing the concentration of harmful gases in the workshop and improving the working environment.

[0033] The material and structure of the ventilation branch pipe 33 should have good corrosion resistance and sealing performance to ensure long-term stable operation. At the same time, the design of the ventilation branch pipe 33 should facilitate installation and maintenance to reduce operating costs.

[0034] In an embodiment provided by the present disclosure, the gas emission system for the volatilized or evaporated gas generated by electrolysis in the electrolytic cell further includes a cover plate 4. The cover plate 4 is formed into a structure adapted to the longitudinal section of the electrolytic cell 11 and is placed in the electrolytic cell 11; the cover plate 4 is slidably connected to the cell body 1 to be able to remove the crystals on the ventilation branch pipe. The cover plate 4 is designed into a structure adapted to the longitudinal section of the electrolytic cell 11, enabling it to closely fit inside the electrolytic cell 11, neither interfering with the electrolysis process nor preventing the cover plate 4 from easily sliding along the length direction of the electrolytic cell 11 when needed to remove the crystals on the ventilation branch pipe and keep the ventilation branch pipe in a better air extraction state.

[0035] In the present disclosure, both ends of the cover plate are respectively slidably connected to the cell body, so that it can move along the length direction of the ventilation branch pipe, and then effectively scrape the crystals on the ventilation branch pipe. Specifically, both ends of the cover plate can be placed on the cell body. Of course, both ends of the ventilation branch pipe can also be clamped in the limit grooves of the cell body, and when moving to a certain position, the cover plate can be taken out of the electrolytic cell.

[0036] Furthermore, the copper busbar 2 is arranged adjacent to the ventilation branch pipe 33. As an important component for current transmission in the electrolytic cell 11, the copper busbar 2 usually generates a certain amount of heat. Arranging the copper busbar 2 adjacent to the ventilation branch pipe 33 can make full use of the airflow in the ventilation branch pipe 33 to dissipate heat from the copper busbar 2, which helps to reduce the temperature of the copper busbar 2 and maintain its stable operation.

[0037] In the case where the space in the electrolytic cell 11 is limited, arranging the copper busbar 2 adjacent to the ventilation branch pipe 33 can make more reasonable use of space, reduce unnecessary space waste, and also helps to reduce the volume and weight of the entire system and lower the manufacturing cost.

[0038] In one embodiment, the longitudinal section of the main ventilation duct 32 is square, and the longitudinal section of the branch ventilation duct 33 is square. Based on the square cross-sectional design of the main ventilation duct 32 and the branch ventilation duct 33, the structures of both the main ventilation duct 32 and the branch ventilation duct 33 can be relatively more stable, capable of withstanding greater pressure and load. In this way, the main ventilation duct 32, as the main part of the entire ventilation system, is responsible for collecting the volatilized or evaporated gas from the electrolytic cell 11 and transporting it to the subsequent processing equipment. The branch ventilation ducts 33 are distributed at different positions inside the electrolytic cell 11 and are responsible for collecting the volatilized or evaporated gas in each area and feeding it into the main ventilation duct 32. By designing both of them with a square cross-section, it can ensure that the connection between them is tighter and more reliable, reducing air leakage and resistance. Thus, it helps to maintain the consistency and coordination of the entire ventilation system.

[0039] The square cross-section is easier to process and install compared to other complex shapes (such as circular, elliptical, etc.), which is beneficial to reducing the manufacturing cost and improving the assembly efficiency.

[0040] Furthermore, the main ventilation duct and the branch ventilation duct are detachably connected to the tank body. In this way, after the main ventilation duct and the branch ventilation duct are detached, the tank body can be deeply cleaned and maintained.

[0041] Specifically, the main ventilation duct and the branch ventilation duct are detachably connected to the tank body by means of buckles, so that the main ventilation duct and the branch ventilation duct can be detached and removed along the card slots, facilitating the cleaning of the crystals formed by the volatilized gas (when cooled) adhering to the branch ventilation duct, the main ventilation duct and the tank body.

[0042] In other embodiments, the main ventilation duct and the branch ventilation duct can also be connected to the tank body by any suitable means such as plugging or screwing.

[0043] The present utility model is not limited to the above optional embodiments, and anyone can obtain other various forms of products under the inspiration of the present utility model. The above specific embodiments should not be construed as limiting the protection scope of the present utility model. The protection scope of the present utility model should be defined by the claims, and the description can be used to interpret the claims.

Claims

1. A system for discharging volatilized or evaporated gases generated by electrolysis in an electrolytic cell, characterized in that: include: The tank body is provided with a plurality of electrolytic cells; each electrolytic cell is provided with cathode plates and anode plates arranged alternately; A copper busbar is disposed on the tank body, the cathode plate is electrically connected to the negative electrode of the copper busbar, and the anode plate is electrically connected to the positive electrode of the copper busbar; and The exhaust device includes a fan, a ventilation main pipe and a plurality of ventilation branches, wherein the ventilation branches are arranged one by one corresponding to the electrolytic cells, and each ventilation branch is parallel to the length direction of the electrolytic cells; one end of the ventilation main pipe is connected to the outlet of the fan, and the other end is connected to the ventilation branch pipe.

2. The system for discharging volatilized or evaporated gases generated by electrolysis in an electrolytic cell according to claim 1, characterized in that: The ventilation branch pipe is provided with an air outlet hole, and the air outlet hole is located on the side of the ventilation branch pipe.

3. The system for discharging volatilized or evaporated gases generated by electrolysis in an electrolytic cell according to claim 2, characterized in that: The air outlet holes are provided in plurality and are evenly spaced along the length direction of the ventilation branch pipe.

4. The system for discharging volatilized or evaporated gases generated by electrolysis in an electrolytic cell according to claim 1, characterized in that: The volatile or evaporated gas exhaust system generated by electrolysis in the electrolytic cell also includes a cover plate, which is formed into a structure adapted to the longitudinal cross-section of the electrolytic cell and is placed in the electrolytic cell; the cover plate is slidably connected to the cell body to be able to remove crystals on the ventilation branch pipe.

5. The system for discharging volatilized or evaporated gases generated by electrolysis in an electrolytic cell according to claim 1, characterized in that: The copper busbar is arranged adjacent to the ventilation branch pipe.

6. The system for discharging volatilized or evaporated gases generated by electrolysis in an electrolytic cell according to claim 1, characterized in that: The longitudinal cross-section of the main ventilation pipe is square, and the longitudinal cross-section of the branch ventilation pipe is square.

7. The system for discharging volatilized or evaporated gases generated by electrolysis in an electrolytic cell according to claim 1, characterized in that: The ventilation main pipe and the ventilation branch pipe are detachably connected to the trough body.

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