Furnace core structure and graphitization furnace

Abstract

The utility model relates to the technical field of graphitization furnaces, and discloses a furnace core structure and a graphitization furnace, the furnace core structure comprises a frame structure, and the projection of the frame structure on a horizontal plane comprises a first side line and a second side line which are perpendicular to each other; the first box plate is mounted on the peripheral wall of the frame structure to form a raw material cavity in the middle of the frame structure; the projection of the first box plate on the horizontal plane coincides with the first sideline or the second sideline. The second box plate is installed in the raw material cavity, the projection of the second box plate on the horizontal plane is configured as a second line segment, and the included angle between the second line segment and the first side line is an acute angle or the included angle between the second line segment and the second side line is an acute angle; the frame structure, the first box plate and the second box plate are all conductors. According to the furnace core structure disclosed by the invention, more uniform temperature distribution in the raw material cavity can be realized, and a local overheating phenomenon is avoided, so that the uniformity of graphitization reaction is improved, the furnace spraying risk is reduced, the energy utilization efficiency is improved, the production fault is reduced, and the reliability and continuity of overall production are improved.

Description

Technical Field

[0001] This utility model relates to the field of graphitization furnace technology, and in particular to a furnace core structure and a graphitization furnace. Background Technology

[0002] The graphitization furnace is a core piece of equipment in the graphite production process, mainly used for high-temperature graphitization of carbon materials. Currently, box-type graphitization furnaces are widely used, with common furnace core structures including tunnel type, nine-square type, etc. However, current furnace core structures suffer from problems such as uneven heating, poor stability, and a tendency for furnace blowouts in the later stages. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a furnace core structure that provides uniform heating, good stability, and low risk of furnace blowout.

[0004] This utility model also proposes a graphitization furnace equipped with the above-mentioned furnace core structure.

[0005] The furnace core structure according to the first aspect of the present invention includes:

[0006] A frame structure, the projection of the frame structure onto a horizontal plane including a first side line and a second side line that are perpendicular to each other;

[0007] The first box plate is installed on the outer peripheral wall of the frame structure to form a raw material cavity in the middle of the frame structure; the projection of the first box plate on the horizontal plane coincides with the first edge line or the second edge line;

[0008] The second box plate is installed inside the raw material cavity. The projection of the second box plate on the horizontal plane is configured as a second line segment. The angle between the second line segment and the first side line is an acute angle, or the angle between the second line segment and the second side line is an acute angle.

[0009] The frame structure, the first box panel, and the second box panel are all conductors.

[0010] The furnace core structure according to the embodiments of this utility model has at least the following beneficial effects:

[0011] The projection of the second box plate in the raw material chamber onto the horizontal plane forms an acute angle with either the first or second side line, meaning that the second box plate is not perpendicular to the inner wall of the raw material chamber. The second box plate is inclined in the raw material chamber. The inclined second box plate can achieve a more uniform temperature distribution in the raw material chamber, avoid local overheating, and improve the uniformity of the graphitization reaction.

[0012] According to some embodiments of the present invention, the frame structure includes a first column, the projection of the first column onto the horizontal plane coincides with the first side line or the second side line;

[0013] The conductivity of the first column is less than or equal to the conductivity of the second box plate.

[0014] According to some embodiments of the present invention, the furnace core structure further includes a second column, the second column being located inside the raw material chamber, and the second box plate being connected to the second column;

[0015] The conductivity of the second column is greater than or equal to that of the first column.

[0016] According to some embodiments of the present invention, the conductivity of the first box plate is less than or equal to the conductivity of the second box plate, and / or the thickness of the first box plate is less than or equal to the thickness of the second box plate.

[0017] According to some embodiments of the present invention, the second box panel includes a central region and an edge region, wherein the edge region surrounds the outer periphery of the central region; the thickness of the central region is greater than the thickness of the edge region.

[0018] According to some embodiments of the present invention, the height of the second box plate in the vertical direction is less than or equal to the height of the first box plate in the vertical direction.

[0019] According to some embodiments of the present invention, a plurality of second box plates are installed in the raw material cavity to divide the raw material cavity into a plurality of filling spaces;

[0020] The projections of the plurality of second box panels onto the horizontal plane are parallel or intersecting.

[0021] According to some embodiments of the present invention, the furnace core structure further includes a third box plate and a fourth box plate, wherein the third box plate is installed at the top of the frame structure and the fourth box plate is installed at the bottom of the frame structure.

[0022] The graphitization furnace according to a second aspect embodiment of the present invention includes:

[0023] A furnace body, wherein a furnace cavity is provided, and a first electrode and a second electrode are respectively installed at both ends of the furnace cavity along its length.

[0024] The aforementioned furnace core structure is installed inside the furnace cavity, and both ends of the furnace core structure are electrically connected to the first electrode and the second electrode, respectively.

[0025] According to some embodiments of the present invention, a heat insulation structure is laid between the outer surface of the furnace core structure and the inner surface of the furnace cavity.

[0026] The graphitization furnace according to the embodiments of this utility model has at least the following beneficial effects:

[0027] Because the furnace core structure described above heats the raw materials more evenly and the temperature difference between different locations in the furnace cavity is smaller, the risk of furnace blowout is reduced. While ensuring product quality, the maximum temperature in the furnace cavity can also be set lower, thereby making more efficient use of energy, reducing energy waste caused by uneven heat distribution, reducing production costs and production failures caused by temperature fluctuations, and improving the overall reliability and continuity of production.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0030] Figure 1 This is a schematic diagram of the first installation of the second box plate of the furnace core structure according to the first aspect of this utility model;

[0031] Figure 2 This is a schematic diagram of a second installation of the second box plate of the furnace core structure according to the first aspect of this utility model;

[0032] Figure 3 This is a schematic diagram of a third installation of the second box plate of the furnace core structure according to the first aspect of this utility model;

[0033] Figure 4 This is a schematic diagram of the graphitization furnace according to the second aspect of this utility model;

[0034] Figure 5 for Figure 4 A schematic diagram of the structure along the AA direction.

[0035] Icon labels:

[0036] Frame structure 100, first column 110, third box panel 120, fourth box panel 130;

[0037] The first box panel is 200;

[0038] Second box panel 300;

[0039] The second column is 400mm.

[0040] Furnace body 500, furnace cavity 510, first electrode 511, second electrode 512, heat insulation structure 520. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, etc., indicating the directional or positional relationship, are based on the directional or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0044] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0045] Reference Figures 1 to 5 The furnace core structure of the first aspect of this utility model includes a frame structure 100, a first box plate 200, and a second box plate 300. The frame structure 100 includes first columns 110, and multiple first columns 110 are assembled to form the frame structure 100. The first box plate 200 is installed on the outer peripheral wall of the frame structure 100 to form a raw material cavity in the middle of the frame structure 100, and the second box plate 300 is installed inside the raw material cavity. The frame structure 100, the first box plate 200, and the second box plate 300 are all conductors, for example, all made of graphite. The raw material cavity is used to store graphitized raw materials. When current passes through the frame structure 100, the first box plate 200, and the second box plate 300, all of them will heat up to heat the graphitized raw materials stored in the raw material cavity.

[0046] Reference Figure 5As shown, the furnace core structure of this utility model embodiment also includes a third box plate 120 and a fourth box plate 130. The third box plate 120 is installed at the top of the frame structure 100 to seal the top of the raw material chamber; the fourth box plate 130 is installed at the bottom of the frame structure 100 to seal the bottom of the raw material chamber; the third box plate 120 and the fourth box plate 130 are also preferably conductors, and the conductivity of the third box plate 120, the fourth box plate 130 and the first box plate 200 are preferably the same, and the same material is used to reduce production costs.

[0047] Reference Figures 1 to 3 As shown, the projection of the frame structure 100 on the horizontal plane in this embodiment is rectangular, including a first side line and a second side line that are perpendicular to each other. The first box plate 200 is installed on the outer peripheral wall of the frame structure 100, so the projection of the first box plate 200 on the horizontal plane coincides with the first side line or the second side line. The second box plate 300 is installed in the raw material cavity. The projection of the second box plate 300 on the horizontal plane is defined as a second line segment. Then, the angle between the second line segment and the first side line is an acute angle, or the angle between the second line segment and the second side line is an acute angle. Refer to Figures 1 to 3 From a top view, the second box plate 300 is not perpendicular to the inner wall of the raw material cavity. The second box plate 300 is inclined inside the raw material cavity. The inclination angle of the second box plate 300 can be set according to the actual situation and is not limited in this embodiment.

[0048] Furthermore, multiple second box plates 300 are installed within the raw material chamber to divide it into multiple filling spaces. The projections of the multiple second box plates 300 onto the horizontal plane are parallel or intersecting. The volumes of the multiple filling spaces may be equal or unequal, and this is not limited in this embodiment. The specific arrangement of the multiple second box plates 300 can be referred to... Figures 1 to 3 The arrangement of the components is not limited in this embodiment. The projection of the frame structure 100 onto the horizontal plane in this embodiment includes two parallel first side lines and two parallel second side lines. Currently, the arrangement of the second box plate 300 is usually perpendicular to the first side line or the second side line. In this embodiment, the inclined second box plate 300 disrupts the current flow path between the two first side lines, thereby achieving a more uniform temperature distribution in the raw material chamber, avoiding local overheating, and improving the uniformity of the graphitization reaction.

[0049] In embodiments of this invention, the projection of the first column 110 onto the horizontal plane coincides with either the first or second side line, and the conductivity of the first column 110 is less than or equal to the conductivity of the second box plate 300. Preferably, the conductivity of the first column 110 is less than the conductivity of the second box plate 300. Therefore, after energization, the current flowing through the second box plate 300 is greater than the current flowing through the first column 110, resulting in more heat being generated within the raw material chamber and improving the heating efficiency of the raw material. Correspondingly, the conductivity of the first column 110 can be set to be the same as the conductivity of the first box plate 200; that is, the conductivity of the first box plate 200 is also preferably less than the conductivity of the second box plate 300, to increase the current flowing through the second box plate 300.

[0050] Reference Figure 2 , Figure 3 As shown, the furnace core structure of the first aspect embodiment of this utility model further includes a second column 400, which is located inside the raw material chamber. The second box plate 300 is connected to the second column 400. The second column 400 can be used to support the material inside the raw material chamber or to improve the stability of the second box plate 300. Furthermore, since the second column 400 is located inside the raw material chamber, most of the heat generated by the second column 400 when energized will be dissipated within the raw material chamber. Therefore, it is preferable that the conductivity of the second column 400 is greater than or equal to the conductivity of the first column 110, and even more preferably, the conductivity of the second column 400 is greater than the conductivity of the first column 110, thereby allowing more current to flow through the inside of the raw material chamber and increasing the heat generation within the raw material chamber. The conductivity of the second column 400 can be set to be the same as or different from the conductivity of the second box plate 300 according to actual conditions, and is not limited in this embodiment.

[0051] As described above, the first plate 200 is located on the outer peripheral wall of the frame structure 100. Therefore, the heat generated by the first plate 200 when energized will dissipate simultaneously towards both the side facing the raw material cavity and the side away from the raw material cavity. The second plate 300 is completely located inside the raw material cavity, and the heat generated by the second plate 300 when energized will be concentrated within the raw material cavity. Therefore, making the heat generated by the second plate 300 when energized greater than that generated by the first plate 200 can reduce energy waste. By increasing the conductivity or thickness of the second plate 300, the current passing through the second plate 300 can be increased, thereby increasing the heat generated by the second plate 300 and concentrating it within the raw material cavity, thus reducing energy waste. Increasing the current passing through the second plate 300 can be achieved by either increasing the conductivity or increasing the thickness of the second plate 300, or by using both methods simultaneously.

[0052] Furthermore, refer to Figures 1 to 3As shown, in this embodiment, the second box plate 300 includes a central region and an edge region, with the edge region surrounding the outer periphery of the central region. The edge region of the second box plate 300 is mainly used for connection with the first column 110 or the second column 400. Current typically flows through the second box plate 300 via the shortest path; therefore, the heat generation in the central region of the second box plate 300 is usually less than that in the edge region. To balance the heat generation in the central and edge regions, it is preferable that the thickness of the central region is greater than the thickness of the edge region. By increasing the thickness of the central region of the second box plate 300, the conductivity of the central region can be improved, allowing more current to pass through the central region, thereby balancing the heat generation in the central and edge regions, ensuring uniform heating at all locations of the second box plate 300, and thus improving the temperature uniformity at all locations within the raw material cavity.

[0053] In embodiments of this utility model, the vertical height of the second box panel 300 is less than or equal to the vertical height of the first box panel 200. Specifically, the vertical height of the first box panel 200 can be set to be equal to the vertical height of the first column 110, while the vertical height of the second box panel 300 can be specifically set according to actual conditions. However, it is preferable that the vertical height of the second box panel 300 does not exceed the vertical height of the frame structure 100 to reduce energy waste and space waste in the graphitization furnace. Therefore, the vertical height of the second box panel 300 preferably does not exceed the vertical height of the first column 110 and the first box panel 200.

[0054] Furthermore, the height of the second column 400 in the vertical direction can be set to be equal to the height of the second box panel 300 in the vertical direction, and the height of the second column 400 in the vertical direction preferably does not exceed the height of the frame structure 100.

[0055] Reference Figure 4 , Figure 5As shown, the graphitization furnace of the second aspect of this utility model includes a furnace body 500, a furnace cavity 510, and a first electrode 511 and a second electrode 512 respectively installed at both ends of the furnace cavity 510 along its length. The aforementioned furnace core structure is installed inside the furnace cavity 510, and both ends of the furnace core structure are electrically connected to the first electrode 511 and the second electrode 512 respectively. A heat insulation structure 520 is laid between the outer surface of the furnace core structure and the inner surface of the furnace cavity 510. The heat insulation structure 520 can be made of suitable materials and have a reasonable thickness according to actual conditions. Because the aforementioned furnace core structure heats the raw materials more uniformly, the temperature difference between different locations within the furnace cavity 510 is smaller, reducing the risk of furnace blowout. While ensuring product quality, the maximum temperature within the furnace cavity 510 can also be set lower, achieving more efficient energy utilization, reducing energy waste caused by uneven heat distribution, lowering production costs and production failures caused by temperature fluctuations, and improving the overall reliability and continuity of production.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0057] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A furnace core structure, characterized in that, include: A frame structure, the projection of the frame structure onto a horizontal plane including a first side line and a second side line that are perpendicular to each other; The first box plate is installed on the outer peripheral wall of the frame structure to form a raw material cavity in the middle of the frame structure; the projection of the first box plate on the horizontal plane coincides with the first edge line or the second edge line; The second box plate is installed inside the raw material cavity. The projection of the second box plate on the horizontal plane is configured as a second line segment. The angle between the second line segment and the first side line is an acute angle, or the angle between the second line segment and the second side line is an acute angle. The frame structure, the first box panel, and the second box panel are all conductors.

2. The furnace core structure according to claim 1, characterized in that: The frame structure includes a first column, the projection of the first column onto the horizontal plane coincides with the first side line or the second side line; The conductivity of the first column is less than or equal to the conductivity of the second box plate.

3. The furnace core structure according to claim 2, characterized in that: The furnace core structure also includes a second column, which is located inside the raw material chamber, and the second box plate is connected to the second column; The conductivity of the second column is greater than or equal to that of the first column.

4. The furnace core structure according to claim 1, characterized in that: The conductivity of the first panel is less than or equal to the conductivity of the second panel, and / or the thickness of the first panel is less than or equal to the thickness of the second panel.

5. The furnace core structure according to claim 1, characterized in that: The second panel includes a central region and an edge region, the edge region surrounding the outer periphery of the central region; the thickness of the central region is greater than the thickness of the edge region.

6. The furnace core structure according to claim 1, characterized in that: The height of the second box panel in the vertical direction is less than or equal to the height of the first box panel in the vertical direction.

7. The furnace core structure according to claim 1, characterized in that: The raw material chamber is equipped with multiple second box plates to divide the raw material chamber into multiple filling spaces; The projections of the plurality of second box panels onto the horizontal plane are parallel or intersecting.

8. The furnace core structure according to claim 1, characterized in that: The furnace core structure also includes a third box plate and a fourth box plate. The third box plate is installed at the top of the frame structure, and the fourth box plate is installed at the bottom of the frame structure.

9. A graphitization furnace, characterized in that, include: A furnace body, wherein a furnace cavity is provided, and a first electrode and a second electrode are respectively installed at both ends of the furnace cavity along its length. The furnace core structure according to any one of claims 1 to 8 is installed in the furnace cavity, and the two ends of the furnace core structure are electrically connected to the first electrode and the second electrode, respectively.

10. The graphitization furnace according to claim 9, characterized in that: A heat insulation structure is laid between the outer surface of the furnace core structure and the inner surface of the furnace cavity.

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