Magnesium electrolytic cell cover

Abstract

The invention discloses a magnesium electrolytic cell cover, and relates to the technical field of chemical engineering, the magnesium electrolytic cell cover is mounted at the open end of the top of an electrolytic cell, and the magnesium electrolytic cell cover comprises a frame beam, a cover body, a plurality of heat exchangers and a plurality of submerged tanks; the frame beam is mounted to the top of the electrolytic cell edge; the cover body comprises a plurality of split cover bodies which are spliced with one another, and gaps are reserved between the split cover bodies to prevent the split cover bodies from expanding when heated; the plurality of heat exchangers are respectively inserted into the plurality of cover body split bodies and are positioned in the electrolytic bath after the cover body split bodies are mounted; and the plurality of submerged tanks are respectively inserted into the plurality of cover body split bodies, and are positioned in the electrolytic bath after the cover body split bodies are mounted. By means of the arrangement, when the configured submerged tank and the matched heat exchanger are locally damaged or lose efficacy or the magnesium electrolytic cell needs to be subjected to slag removal, it can be guaranteed that a system in the magnesium electrolytic cell does not have the problem of heat balance imbalance, and therefore the production efficiency of the magnesium electrolytic cell is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical industry, in particular to a magnesium electrolysis tank cover. BACKGROUND

[0002] In general magnesium electrolysis production process, the liquid tank and the supporting heat exchanger configured by the magnesium electrolysis tank cover are in high temperature corrosive medium environment for a long time, when the key equipment is partially damaged, fails or the magnesium electrolysis tank needs to be slagging, the magnesium electrolysis tank cover needs to be hoisted out as a whole during the operation, at this time, the system will face the problem of significant heat balance disorder, resulting in rapid rise of electrolysis temperature, affecting the production efficiency.

[0003] Therefore, how to provide a magnesium electrolysis tank cover to solve the above-mentioned drawbacks is a technical problem that the person skilled in the art needs to solve at present. SUMMARY

[0004] The purpose of the present application is to provide a magnesium electrolysis tank cover, which can ensure that the system in the magnesium electrolysis tank will not appear the problem of heat balance disorder when the liquid tank and the supporting heat exchanger configured by the magnesium electrolysis tank cover are partially damaged, fail or the magnesium electrolysis tank needs to be slagging, so as to improve the production efficiency of the magnesium electrolysis tank.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A magnesium electrolysis tank cover is installed at the open end of the top of the electrolysis tank, comprising:

[0007] A frame beam is installed to the top of the edge of the electrolysis tank;

[0008] A cover body comprises a plurality of cover body parts that are spliced with each other, and a gap is reserved between the cover body parts to prevent the cover body parts from expanding due to heat;

[0009] A plurality of heat exchangers are respectively inserted into a plurality of cover body parts, and are located in the electrolysis tank after the installation of the cover body parts is completed;

[0010] A plurality of liquid tanks are respectively inserted into a plurality of cover body parts, and are located in the electrolysis tank after the installation of the cover body parts is completed.

[0011] In a possible embodiment, the frame beam is a square frame structure, and a layer of steel plate is laid on the outer side of the square frame structure.

[0012] In a possible embodiment, the steel plate extends in a direction away from the electrolysis tank to form a first extension.

[0013] In a possible embodiment, a lifting lug for lifting the frame beam is welded on the outer side of the first extension.

[0014] In a possible embodiment, a first seal is arranged between the outer side wall of the frame beam and the steel plate outside the electrolytic cell.

[0015] In a possible embodiment, a second seal is arranged between the outer circumferential surface of the cover body and the inner wall of the first extension.

[0016] In a possible embodiment, the cover body is a double-layer structure, which comprises a first layer and a second layer, the materials of the first layer and the second layer are different, the first layer is formed by pouring low-expansion castable, and the material of the second layer is an alloy plate.

[0017] In a possible embodiment, the heat exchanger comprises an annular heat exchange pipe arranged below the cover body, and a first pipe and a second pipe inserted into the cover body, the liquid tank comprises a tank body arranged below the cover body, and a third pipe inserted into the cover body, and the tank body is arranged in the middle of the annular heat exchange pipe.

[0018] In a possible embodiment, the cover body further comprises an openable and closable measuring port and a material port.

[0019] In a possible embodiment, the materials of the first seal and the second seal are high-temperature-resistant sealing salt.

[0020] With respect to the above background, the present application provides a magnesium electrolytic cell cover, which is installed at the open end of the top of the electrolytic cell, and comprises a frame beam, a cover body, a plurality of heat exchangers and a plurality of liquid tanks. The frame beam is installed at the top of the edge of the electrolytic cell. The cover body comprises a plurality of cover body parts which are spliced with each other and have a gap reserved therebetween to prevent the cover body parts from being expanded by heat. The plurality of heat exchangers are respectively inserted into the plurality of cover body parts and are located in the electrolytic cell after the installation of the cover body parts. The plurality of liquid tanks are respectively inserted into the plurality of cover body parts and are located in the electrolytic cell after the installation of the cover body parts.

[0021] Specifically, the magnesium electrolytic cell cover provided in the embodiment comprises a cover body and a frame beam, wherein the frame beam serves to support the cover body; it is to be noted that the cover body in the embodiment is divided into a plurality of cover sub-bodies, and the plurality of cover sub-bodies are mutually spliced to jointly cover the electrolytic cell; moreover, since the electrolytic cell has a high temperature, in consideration of thermal expansion and contraction, the cover sub-bodies are prevented from swelling to cause the cover body to be partially extruded and bulged, and a certain gap is left between every two adjacent cover sub-bodies; at the same time, a heat exchanger and a liquid tank that work independently are installed on each cover sub-body; in this way, when the heat exchanger or the liquid tank is damaged or the magnesium electrolytic cell needs to be slagged, only the cover sub-body corresponding to the damaged heat exchanger or liquid tank or the cover sub-body corresponding to the position that needs to be slagged needs to be hoisted out, so that the heat exchanger and the liquid tank in the electrolytic cell continue to work to maintain the heat balance in the electrolytic cell, so that the electrolytic temperature is not rapidly increased, thereby affecting the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0023] Figure 1 Front view of the magnesium electrolytic cell cover provided in the embodiment of the present application;

[0024] Figure 2 Front view of the magnesium electrolytic cell cover provided in the embodiment of the present application;

[0025] Figure 3 Front view of the magnesium electrolytic cell cover provided in the embodiment of the present application;

[0026] Wherein:

[0027] 01-electrolytic cell;

[0028] 100-frame beam, 110-first extension, 120-lifting lug, 130-first sealing element;

[0029] 200-cover sub-body, 210-first layer, 220-second layer, 230-second sealing element, 240-measuring port, 250-material port;

[0030] 300-heat exchanger, 310-annular heat exchange pipe, 320-first pipeline, 330-second pipeline;

[0031] 400-liquid tank, 410-tank body, 420-third pipeline. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0033] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0034] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left" and "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated position or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0035] The purpose of the present application is to provide a magnesium electrolytic cell cover, which can ensure that the system in the magnesium electrolytic cell does not appear thermal balance disorder problem when the magnesium electrolytic cell needs to be slagged, so as to improve the production efficiency of the magnesium electrolytic cell.

[0036] To achieve the above object, the present application provides the following technical solutions:

[0037] Please refer to Figures 1 to 3 As shown in the figure, the magnesium electrolytic cell cover provided by the embodiment is installed at the open end of the top of the electrolytic cell 01, and comprises a frame beam 100, a cover body, a plurality of heat exchangers 300 and a plurality of liquid under tank 400. The frame beam 100 is installed at the top of the edge of the electrolytic cell 01. The cover body comprises a plurality of cover bodies 200 which are spliced with each other, and gaps are reserved between the cover bodies 200 to prevent the cover bodies 200 from expanding due to heat. A plurality of heat exchangers 300 are respectively inserted into a plurality of cover bodies 200, and are located in the electrolytic cell 01 after the installation of the cover bodies 200. A plurality of liquid under tank 400 are respectively inserted into a plurality of cover bodies 200, and are located in the electrolytic cell 01 after the installation of the cover bodies 200.

[0038] Specifically, the electrolytic tank 01 can be a square cavity structure formed by bricks, and a layer of alloy steel plate is laid on the outer side wall of the electrolytic tank 01 to ensure the strength of the electrolytic tank 01 and prevent electrolyte from leaking; at the same time, the height of the alloy steel plate is slightly higher than the height of the electrolytic tank 01, and the extra part upward can just limit the frame beam 100; the frame beam 100 is installed on the top of the side wall of the electrolytic tank 01, and the overall shape is the same as the cross-sectional shape of the electrolytic tank 01, and the thickness of the frame beam 100 in the horizontal direction is slightly larger than the wall thickness of the electrolytic tank 01; and the cover body is a split structure relative to the prior art, which includes a plurality of cover body splits 200, and each cover body split 200 is provided with a heat exchanger 300 and a liquid tank 400 that can work independently, after the installation of the cover body split 200 is completed, the heat exchanger 300 and the liquid tank 400 will be located inside the electrolytic tank 01, wherein the liquid tank 400 can adjust the liquid level of the electrolyte in the electrolytic tank 01, when the liquid level is too low, the liquid tank 400 can supplement the electrolyte in the electrolytic tank 01, when the liquid level in the electrolytic tank 01 is too high, the electrolyte in the electrolytic tank 01 can flow back to the liquid tank 400; and the heat exchanger 300 can maintain the heat balance in the electrolytic tank 01.

[0039] When the electrolytic tank 01 is in normal use, a plurality of cover body splits 200 are laid on the slot to completely cover the electrolytic tank 01, and a certain gap is left between them, which is only used for the slight expansion of the cover body split 200 when heated, and will not expose the electrolytic tank 01.

[0040] In other words, the magnesium electrolytic tank 01 cover provided by the embodiment includes a cover body and a frame beam 100, wherein the frame beam 100 serves to support the cover body; it should be noted that the cover body in the embodiment is divided into a plurality of cover body splits 200, and the plurality of cover body splits 200 are spliced with each other and jointly cover the top of the electrolytic tank 01; moreover, since the electrolytic tank 01 has a high temperature, considering thermal expansion and contraction, to prevent the cover body split 200 from expanding and causing part of the cover body to be squeezed out and bulge, a certain gap is left between each two adjacent cover body splits 200, and the existence of the gap also prevents the cover body split 200 from being smoothly lifted out after expansion and causes the adjacent cover body split 200 to be tightly clamped; at the same time, each cover body split 200 is provided with a heat exchanger 300 and a liquid tank 400 that work independently; in this way, when the heat exchanger 300 or the liquid tank 400 is damaged, or the magnesium electrolytic tank 01 needs to be cleaned, only the cover body split 200 corresponding to the damaged heat exchanger 300 or liquid tank 400 or the cover body split 200 corresponding to the position needing to be cleaned needs to be lifted out, so that the heat exchanger 300 and the liquid tank 400 in the electrolytic tank 01 continue to work, thereby maintaining the heat balance in the electrolytic tank 01, so that the electrolysis temperature does not rise rapidly, thereby affecting the production efficiency.

[0041] Of course, in the embodiment, the cover body includes two cover parts 200, and in actual production application, the number of cover parts 200 included in the cover body can be adjusted according to the size of the electrolytic cell 01, which is not specifically limited herein.

[0042] In a possible embodiment, the frame beam 100 is a square frame structure, and a layer of steel plates is arranged on the outer side of the square frame structure.

[0043] Specifically, as shown in Figures 1 to 3 , the frame beam 100 is a square frame structure to adapt to the cross-sectional shape of the electrolytic cell 01, and has a certain thickness and structural strength, and the frame beam 100 is used to support the plurality of cover parts 200; it can be understood that, in order to further increase the structural strength of the frame beam 100, a circle of steel plates is arranged on the outer side wall of the frame beam 100, and the two are fixedly connected by rivets.

[0044] Further, the steel plates extend in a direction away from the electrolytic cell 01 to form first extension parts 110.

[0045] As shown in Figure 1 and Figure 2 , the steel plates extend upward by a length to form the first extension parts 110; it can be understood that the arrangement of the first extension parts 110 can make the cover parts 200 easier to position, and also make the position of the cover parts 200 more accurate; that is, the cover parts 200 will be located between the two first extension parts 110; such an arrangement also prevents the cover parts 200 from deviating from the slot of the electrolytic cell 01 due to accidental situations, and can only be fitted in the fixed position, thereby improving the safety of the electrolytic cell 01.

[0046] In a possible embodiment, a lifting lug 120 for lifting the frame beam 100 is welded on the outer side of the first extension part 110.

[0047] Specifically, as shown in Figure 2 , it can be understood that, in order to facilitate the assembly of the frame beam 100 to the top of the slot of the electrolytic cell 01, the embodiment further welds a lifting lug 120 on the outer side of the first extension part 110; in this way, the frame beam 100 with a certain weight can be moved and installed by a crane or other lifting device, which can reduce the labor of the workers.

[0048] In a possible embodiment, a first sealing member 130 is arranged between the outer side wall of the frame beam 100 and the steel plate outside the electrolytic cell 01.

[0049] It can be understood that the reaction in the electrolytic tank 01 will produce a certain amount of gas in the process, therefore, in order to prevent gas from leaking between the frame beam 100 and the electrolytic tank 01, a first sealing member 130 is arranged between the steel plates on the outer wall of the electrolytic tank 01, as shown in Figure 1 and Figure 2 The first sealing member 130 is attached to the outer wall of the frame beam 100 and the inner wall of the upwardly extending portion of the electrolytic tank 01.

[0050] Further, a second sealing member 230 is arranged between the outer side surface of the cover body and the inner wall of the first extension 110.

[0051] Similarly, in order to prevent gas in the electrolytic tank 01 from leaking from the gap between the cover body and the frame beam 100, the present embodiment also provides a second sealing member 230 between the outer wall of the cover body and the inner wall of the first extension 110, as shown in Figure 1 and Figure 2 The second sealing member 230 is tightly attached to the outer wall of the cover body and the inner wall of the first extension 110.

[0052] In one possible embodiment, the cover body is a double-layer structure, which includes a first layer 210 and a second layer 220, the first layer 210 and the second layer 220 are made of different materials, the first layer 210 is formed by pouring low-expansion castable, and the second layer 220 is made of alloy plate.

[0053] As shown in Figure 1 The cover body in the present embodiment is a double-layer structure, that is, each cover body part 200 is a double-layer structure, wherein the inner layer, which is close to the electrolytic tank 01, is the first layer 210, and the outer layer, which is the outermost layer of the cover body part 200, is the second layer 220.

[0054] It should be noted that the first layer 210 is formed by pouring low-expansion castable, and since the first layer 210 will face the electrolytic tank 01, a high-temperature-resistant and corrosion-resistant material needs to be added to the low-expansion castable to enhance the durability of the cover body part 200 and thus prolong its service life; and the outer layer is an alloy steel plate, and the first layer 210 and the second layer 220 are fixedly connected by rivets, and the arrangement of the alloy steel plate can significantly enhance the structural strength of the cover body part 200, and it will mainly bear the weight of the heat exchanger 300, the under-liquid tank 400 and other components installed on the cover body part 200.

[0055] Of course, the castable of the first layer 210 can also be other materials, which are mainly used to isolate the high temperature and corrosion in the electrolytic tank 01, so as long as the selected castable can resist high temperature and corrosion.

[0056] In one possible embodiment, the heat exchanger 300 includes an annular heat exchange pipe 310 located at the lower side of the cover body 200 and first and second pipes 320 and 330 inserted into the cover body 200, and the liquid tank 400 includes a tank body 410 located at the lower side of the cover body 200 and a third pipe 420 inserted into the cover body 200, and the tank body 410 is located in the middle of the annular heat exchange pipe 310.

[0057] Specifically, as shown in the figure, the heat exchanger 300 in the embodiment includes two first and second pipes 320 and 330 for the heat exchange medium to enter and exit, and an annular heat exchange pipe 310 in an annular structure for heat exchange of the electrolyte in the electrolytic tank 01, the annular heat exchange pipe 310 is in communication with the first and second pipes 320 and 330, one of the first and second pipes 320 and 330 is used for the heat exchange medium to enter, and the heat exchange medium is discharged from the other pipe after heat exchange in the heat exchange pipe; wherein the annular heat exchange pipe 310 can also be provided in other shapes, as long as it can sufficiently adjust the heat balance in the electrolytic tank 01. Figure 1 In the embodiment, the liquid tank 400 is used to regulate the liquid level of the electrolyte in the electrolytic tank 01, which includes a tank body 410 located in the electrolytic tank 01 and a third pipe 420 in communication with the tank body 410, when the liquid level of the electrolytic tank 01 is too high, the gas in the electrolytic tank 01 is discharged through the third pipe 420 of the liquid tank 400 to reduce the internal pressure, so that the electrolyte enters the liquid tank 400, and when the liquid level of the electrolytic tank 01 is too low, the gas is introduced through the third pipe 420 of the liquid tank 400 to increase the pressure, so that the electrolyte reenters the electrolytic tank 01.

[0058] Among them, the tank body 410 of the liquid tank 400 is just located in the central space of the annular heat exchange pipe 310 when installed, so as to improve the utilization rate of the space in the electrolytic tank 01 as much as possible; and the height of the tank body 410 of the liquid tank 400 relative to the electrolytic tank 01 needs to be adjusted when installed, so that it can accurately determine the height of the liquid level in the electrolytic tank 01.

[0059] Whether it is the first and second pipes 320 and 330 of the heat exchanger 300 or the third pipe 420 of the liquid tank 400, they can be movably inserted into the cover body 200, and when the height of the heat exchanger 300 and the liquid tank 400 is not suitable, the staff can make appropriate adjustments.

[0060] In the embodiment, the tank body 410 of the liquid tank 400 can be installed with a liquid level sensor, which can detect the height of the electrolyte in the electrolytic tank 01, and a gas extraction device can be provided at the end of the third pipe 420 of the liquid tank 400 to extract or charge argon.

[0061]

[0062] ​In one possible embodiment, the cover body 200 is further provided with a measuring port 240 and a material port 250 that can be opened or closed.

[0063] Specifically, such as Figure 3 As shown in this embodiment, in order to facilitate the addition of materials to the electrolytic cell 01 and the measurement of various data of the electrolyte, two measuring ports 240 and one material port 250 are provided on the cover body 200, and both the measuring ports 240 and the material port 250 are provided with doors that can be opened or closed; with this arrangement, it is not necessary to frequently lift the cover body 200 every time materials are added or when data of the electrolyte is frequently tested, which greatly reduces the labor intensity of the staff.

[0064] In one possible embodiment, both the first seal 130 and the second seal 230 are made of high-temperature resistant sealing salt.

[0065] In this embodiment, the materials of the first seal 130 and the second seal 230 are preferably high-temperature resistant sealing salts. Of course, other high-temperature resistant, corrosion-resistant and sealing materials can also be selected.

[0066] In summary, this application provides a magnesium electrolysis cell cover 01, which is designed as a split structure consisting of multiple independent modules, namely cover body parts 200. Each module has a submersible tank 400 and a heat exchanger 300. The cover body is placed on the frame beam 100. When a partial failure or functional failure occurs in the submersible tank 400 or heat exchanger 300 of a single module, the modular independent operation characteristics allow other units to continue operating during online maintenance, thus achieving system stability.

[0067] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0068] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0069] The embodiments provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A magnesium electrolytic cell cover, installed in the open end of the top of the electrolytic cell (01), characterized in that, The utility model relates to a cover body for electrolytic tank, which comprises: a frame beam (100) installed on the top of the edge of the electrolytic tank (01); a cover body, which comprises a plurality of cover body parts (200) spliced together, and gaps are reserved between the cover body parts (200) to prevent the cover body parts (200) from expanding due to heat; a plurality of heat exchangers (300) respectively inserted into the cover body parts (200) and located in the electrolytic tank (01) after the cover body parts (200) are installed; a plurality of under-liquid tanks (400) respectively inserted into the cover body parts (200) and located in the electrolytic tank (01) after the cover body parts (200) are installed.

2. The magnesium electrolytic cell cover of claim 1, wherein, The frame beam (100) is a square frame structure, and a layer of steel plate is laid on the outer side of the square frame structure.

3. The magnesium electrolytic cell cover of claim 2, wherein, The steel plate extends in a direction away from the electrolytic tank (01) to form a first extension (110).

4. The magnesium electrolytic cell cover of claim 3, wherein, A lifting lug (120) for lifting the frame beam (100) is welded on the outer side of the first extension (110).

5. The magnesium electrolytic cell cover of claim 3, wherein, A first sealing member (130) is arranged between the outer side wall of the frame beam (100) and the steel plate on the outer side of the electrolytic tank (01).

6. The magnesium electrolytic cell cover of claim 5, wherein, A second sealing member (230) is arranged between the outer side of the cover body and the inner wall of the first extension (110).

7. The magnesium electrolytic cell cover of claim 1, wherein, The cover body is a double-layer structure, which comprises a first layer (210) and a second layer (220), the materials of the first layer (210) and the second layer (220) are different, the first layer (210) is formed by pouring low-expansion castable, and the material of the second layer (220) is an alloy plate.

8. The magnesium electrolytic cell cover of claim 1, wherein, The heat exchanger (300) comprises an annular heat exchange pipe (310) located on the lower side of the cover body part (200) and a first pipe (320) and a second pipe (330) inserted into the cover body part (200), and the under-liquid tank (400) comprises a tank body (410) located on the lower side of the cover body part (200) and a third pipe (420) inserted into the cover body part (200), and the tank body (410) is located in the middle of the annular heat exchange pipe (310).

9. The magnesium electrolytic cell cover of claim 1, wherein, The cover body part (200) is further provided with an openable and closable measuring port (240) and a material port (250).

10. The magnesium electrolytic cell cover of claim 6, wherein, The materials of the first sealing member (130) and the second sealing member (230) are high-temperature-resistant sealing salt.

Images