A graphite anode with adjustable electrolysis temperature and electrolytic cell level

Abstract

This invention is applicable to the industrial production field and provides a graphite anode with adjustable electrolysis temperature and electrolytic cell liquid level. It includes: a hollow electrode; a connecting hole disposed at the bottom of the hollow electrode; a partition disposed inside the hollow electrode to divide the interior, with gaps between the partition and the top and bottom of the hollow electrode; a gas outlet pipe for discharging gas from inside the hollow electrode; and a gas inlet pipe for introducing gas into the hollow electrode. The gas outlet pipe and the gas inlet pipe are distributed on both sides of the partition. This invention has a simple structure, low cost, and convenient operation, enabling temperature and liquid level regulation during electrolytic cell production.

Description

Technical Field

[0001] This invention relates to the field of industrial production, specifically to a graphite anode with adjustable electrolysis temperature and electrolytic cell level. Background Technology

[0002] In the electrolysis production process, it is often necessary to adjust the electrolysis temperature and the liquid level in the electrolytic cell to ensure the normal operation of electrolysis. Currently, the devices for adjusting the electrolysis temperature and liquid level are air-cooled coils and submersible tanks. These are bulky, complex in structure, and occupy a large amount of space in the electrolytic cell, resulting in low effective space utilization and increased investment. To solve this technical problem, a graphite anode that can adjust the electrolysis temperature and liquid level in the electrolytic cell is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a graphite anode with adjustable electrolysis temperature and electrolytic cell level to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A graphite anode with adjustable electrolysis temperature and electrolytic cell level includes: a hollow electrode;

[0006] A connecting hole is located at the bottom of the hollow electrode;

[0007] A partition is set inside the hollow electrode to divide the interior of the hollow electrode, and gaps are provided between the partition and the top and bottom of the hollow electrode.

[0008] The vent pipe is used to discharge the gas inside the hollow electrode;

[0009] And, the air inlet pipe is used to introduce gas into the hollow electrode; the air outlet pipe and the air inlet pipe are distributed on both sides of the partition.

[0010] As a further aspect of the present invention, the hollow electrode is made of graphite.

[0011] As a further embodiment of the invention, the partition is made of graphite.

[0012] As a further aspect of the present invention, the material of the vent pipe is alloy steel that is resistant to high temperature and corrosion.

[0013] As a further embodiment of the present invention: the air outlet pipe is connected to the second air pump.

[0014] As a further aspect of the present invention, the intake pipe is made of high-temperature and corrosion-resistant alloy steel.

[0015] As a further embodiment of the present invention: an external air pump is connected to the air intake pipe.

[0016] An electrolytic cell, characterized in that the electrolytic cell includes an electrolytic cell body and a graphite anode disposed inside the electrolytic cell body; both the gas outlet pipe and the gas inlet pipe are equipped with valves.

[0017] The present invention provides another technical solution as follows:

[0018] An electrolytic cell usage method, characterized by comprising:

[0019] When the electrolytic cell is full of liquid, open the valve on the outlet pipe and close the valve on the inlet pipe to allow the electrolyte to enter the cavity of the hollow electrode through the connecting hole, so that the liquid level inside and outside the electrode is the same.

[0020] When electrolysis begins, the valve on the gas outlet pipe should be closed. As electrolysis proceeds and the electrolyte level drops, the valve on the gas inlet pipe should be opened to introduce gas into the cavity of the hollow electrode, and the electrolyte in the cavity should be forced into the electrolytic cell body through the connecting hole.

[0021] When the temperature inside the electrolytic cell rises, the valves on the outlet pipe and the inlet pipe are opened simultaneously, but the opening degrees of the two valves are different, with the valve on the inlet pipe opening larger than the valve on the outlet pipe.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention includes: a hollow electrode; a connecting hole disposed at the bottom of the hollow electrode; a partition disposed inside the hollow electrode to divide the interior of the hollow electrode, and gaps are provided between the partition and the top and bottom of the hollow electrode; an outlet pipe for discharging gas from inside the hollow electrode; and an inlet pipe for introducing gas into the hollow electrode; the outlet pipe and the inlet pipe are distributed on both sides of the partition. The present invention has a simple structure, low cost, and convenient operation, and can regulate the temperature and liquid level during the electrolytic cell production process. Attached Figure Description

[0023] Figure 1 This is a front view of a graphite anode with adjustable electrolysis temperature and electrolytic cell level according to an embodiment of the present invention.

[0024] Figure 2 This is a side view of a graphite anode with adjustable electrolysis temperature and electrolytic cell level according to an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the usage state of an electrolytic cell according to an embodiment of the present invention. Figure 1 .

[0026] Figure 4 This is a schematic diagram of the usage state of an electrolytic cell according to an embodiment of the present invention. Figure 2 .

[0027] In the diagram: 1-Hollow electrode, 2-Connecting hole, 3-Baffle, 4-Outlet pipe, 5-Inlet pipe. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1

[0030] Please see Figures 1-2 The present invention provides a structural diagram of a graphite anode with adjustable electrolysis temperature and electrolytic cell level, comprising: a hollow electrode 1, a connecting hole 2, a partition 3, a gas outlet pipe 4, and a gas inlet pipe 5; the connecting hole 2 is disposed at the bottom of the hollow electrode 1; the partition 3 is disposed inside the hollow electrode 1 to divide the interior of the hollow electrode 1, and gaps are provided between the partition 3 and the top and bottom of the hollow electrode 1; the partition 3 can also reinforce the hollow electrode 1; the gas outlet pipe 4 is used to discharge gas from the interior of the hollow electrode 1, and the gas inlet pipe 5 is used to introduce gas into the interior of the hollow electrode 1; the gas outlet pipe 4 and the gas inlet pipe 5 are distributed on both sides of the partition 3.

[0031] This invention has a simple structure, low cost, and is easy to operate, enabling temperature and liquid level regulation during the electrolytic cell production process.

[0032] In a preferred embodiment of the present invention, the hollow electrode 1 is made of graphite and immersed in the high-temperature melt. Its main function is to draw the high-temperature melt into the cavity through the connecting hole 2 for temperature and liquid level regulation. The hollow electrode 1 serves as an inert anode in the electrolysis process and also regulates the temperature and liquid level of the electrolytic cell by drawing in and expelling the high-temperature melt.

[0033] In a preferred embodiment of the present invention, the connecting hole 2 primarily serves to connect the interior of the hollow electrode 1 with the high-temperature molten metal outside the electrode. The diameter can be determined based on the electrode thickness. The connecting hole 2 can be a round hole, a square hole, or a hole of other shapes.

[0034] In a preferred embodiment of the present invention, the partition 3 is made of graphite and its main function is to enhance the strength of the hollow electrode 1. Gaps are left at both the top and bottom ends to allow for the flow of gas and liquid.

[0035] In a preferred embodiment of the present invention, the vent pipe 4 is made of high-temperature and corrosion-resistant alloy steel, and its lower end is connected to the top of the hollow electrode 1. Its main function is to discharge gas from the electrode. When a valve is connected, the gas flow rate can also be adjusted by adjusting the valve opening. The vent pipe 4 is used to regulate the pressure in the electrode cavity. When a valve is connected, the gas flow rate can also be adjusted by adjusting the valve opening. Its diameter can be determined according to the production process.

[0036] In a preferred embodiment of the present invention, the air inlet pipe 5 is made of high-temperature and corrosion-resistant alloy steel. Its upper end is connected to the top of the hollow electrode 1, and its lower end extends to the bottom of the hollow electrode 1. Its main function is to introduce compressed air or other gases to force the high-temperature molten salt in the hollow electrode 1 out of the electrode or to cool the electrode, thereby reducing the tank temperature. The air inlet pipe 5 is used to introduce compressed air or other gases to increase the pressure in the electrode cavity, thereby forcing the high-temperature molten salt in the hollow electrode 1 out of the electrode or cooling the electrode, thus achieving the purpose of regulating the tank temperature and liquid level.

[0037] The air inlet pipe 5 is connected to a first air pump to facilitate the input of gas. The air outlet pipe 4 is connected to a second air pump to facilitate the discharge of gas.

[0038] The regulating principle of this invention:

[0039] When the outlet pipe 4 is open and the inlet pipe 5 is closed, there is no air intake, and the outlet pipe connects to the outside. The inner cavity of the hollow graphite electrode is at atmospheric pressure, and the external electrolyte enters the inner cavity of the electrode through the connecting hole 2. The liquid levels inside and outside the electrode are the same. When the outlet pipe 4 is closed and the inlet pipe 5 is open, compressed air enters the inner cavity of the electrode through the inlet pipe 5, increasing the pressure inside the cavity. This causes the electrolyte in the inner cavity to be discharged into the electrolytic cell through the connecting hole 2. At this time, the liquid level in the electrode cavity drops, while the liquid level in the electrolytic cell rises. In this way, the liquid level in the electrolytic cell can be adjusted to keep the liquid level consistent. When cooling is required, both the outlet pipe 4 and the inlet pipe 5 are opened simultaneously. The pressure difference between the inlet and outlet pipes allows cold air to be continuously introduced into the electrolyte while maintaining the liquid level, thereby lowering the electrolyte temperature.

[0040] Example 2

[0041] like Figure 3 and 4 This invention is embodiment 2, and also provides an electrolytic cell, which includes an electrolytic cell body and a graphite anode disposed inside the electrolytic cell body; both the gas outlet pipe 4 and the gas inlet pipe 5 are provided with valves.

[0042] A specific embodiment of the present invention is taken as an example of a magnesium chloride multi-stage electrolytic cell:

[0043] During the electrolysis of magnesium chloride in a multi-stage electrolytic cell, as electrolysis proceeds, the magnesium chloride electrolyte continuously decomposes into magnesium and chlorine gas, causing the electrolyte level to drop until it exposes the top of the cathode, which is unacceptable. At this point, either the electrolyte must be replenished or a regulating device must be used. The traditional method uses air-cooled coils and submersible tanks for regulation, requiring the construction of a large magnesium collection chamber next to the electrolysis chamber. This chamber is bulky, structurally complex, and occupies a significant amount of space in the electrolytic cell, resulting in low effective space utilization and increased investment. The electrolytic cell of this invention effectively solves this problem.

[0044] Example 3

[0045] like Figure 3 and 4 Embodiment 3 of the present invention also provides a method for using an electrolytic cell, comprising:

[0046] When the electrolytic cell body is full of liquid, open the valve on the outlet pipe 4 and close the valve on the inlet pipe 5, so that the electrolyte enters the cavity of the hollow electrode 1 through the connecting hole 2, so that the liquid level inside and outside the electrode is the same.

[0047] When electrolysis begins, the valve on the gas outlet pipe 4 should be closed. As electrolysis proceeds and the electrolyte level drops, the valve on the gas inlet pipe 5 should be opened to introduce gas into the cavity of the hollow electrode 1. This will force the electrolyte in the cavity into the electrolytic cell through the connecting hole 2. At this time, the electrolyte level in the cavity of the hollow electrode 1 drops, while the electrolyte level in the electrolytic cell body rises to its original position, thus maintaining a constant electrolyte level.

[0048] When the temperature inside the electrolytic cell rises, the valves on the outlet pipe 4 and the inlet pipe 5 are opened simultaneously, but the opening degrees of the two valves are different. The valve on the inlet pipe 5 is opened slightly larger than the valve on the outlet pipe 4, so that the amount of gas entering is slightly larger than the amount of gas exiting. This creates a slight positive pressure in the cavity of the hollow electrode 1, so that cold gas continuously enters the cavity to cool the electrolytic cell and the electrode, and is continuously discharged from the outlet pipe 4. At the same time, the liquid level in the electrolytic cell remains basically unchanged. After a period of time, the temperature inside the electrolytic cell can be reduced.

[0049] The high-temperature melt can be molten salt.

[0050] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0051] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A graphite anode with adjustable electrolysis temperature and electrolytic cell level, characterized in that, include: Hollow electrode (1); A connecting hole (2) is provided at the bottom of the hollow electrode (1); A partition (3) is provided inside the hollow electrode (1) to divide the interior of the hollow electrode (1), and a gap is provided between the partition (3) and the top and bottom of the hollow electrode (1); The vent pipe (4) is used to discharge the gas inside the hollow electrode (1); And, the air inlet pipe (5) is used to introduce gas into the hollow electrode (1); the air outlet pipe (4) and the air inlet pipe (5) are distributed on both sides of the partition (3).

2. The graphite anode with adjustable electrolysis temperature and electrolytic cell level according to claim 1, characterized in that, The hollow electrode (1) is made of graphite.

3. The graphite anode with adjustable electrolysis temperature and electrolytic cell level according to claim 1, characterized in that, The connecting hole (2) is a round hole or a square hole.

4. The graphite anode with adjustable electrolysis temperature and electrolytic cell level according to claim 1, characterized in that, The partition (3) is made of graphite.

5. The graphite anode with adjustable electrolysis temperature and electrolytic cell level according to claim 1, characterized in that, The material of the vent pipe (4) is high-temperature and corrosion resistant alloy steel.

6. The graphite anode with adjustable electrolysis temperature and electrolytic cell level according to claim 5, characterized in that, The air outlet pipe (4) is connected to the second air pump.

7. The graphite anode with adjustable electrolysis temperature and electrolytic cell level according to claim 1, characterized in that, The air intake pipe (5) is made of high-temperature and corrosion-resistant alloy steel.

8. A graphite anode with adjustable electrolysis temperature and electrolytic cell level according to claim 7, characterized in that, The air intake pipe (5) is connected to the first air pump.

9. An electrolytic cell, characterized in that, The electrolytic cell includes an electrolytic cell body and a graphite anode as described in any one of claims 1-8 disposed inside the electrolytic cell body; valves are provided on both the outlet pipe (4) and the inlet pipe (5).

10. A method of using an electrolytic cell as described in claim 9, characterized in that, include: When the electrolytic cell body is full of liquid, open the valve on the outlet pipe (4) and close the valve on the inlet pipe (5) to allow the electrolyte to enter the cavity of the hollow electrode (1) through the connecting hole (2) so that the liquid level inside and outside the electrode is the same. When electrolysis begins, the valve on the outlet pipe (4) should be closed. As electrolysis proceeds and the electrolyte level drops, the valve on the inlet pipe (5) should be opened to introduce gas into the cavity of the hollow electrode (1) and force the electrolyte in the cavity into the electrolytic cell body through the connecting hole (2). When the temperature inside the electrolytic cell rises, the valves on the outlet pipe (4) and the inlet pipe (5) are opened at the same time, but the openings of the two valves are different, with the valve on the inlet pipe (5) being larger than the valve on the outlet pipe (4).

Images