Carbonization furnace and carbonization production line for preparing carbon paper

Abstract

The utility model relates to the technical field of carbon paper preparation, in particular to a carbonization furnace for carbon paper preparation and a carbonization production line, and the carbonization furnace comprises a furnace body which comprises a furnace body inlet located at the front end of the furnace body and a furnace body outlet located at the rear end of the furnace body; the supporting piece extends in the front-back direction, at least part of the supporting piece is arranged in the furnace body and between the furnace body inlet and the furnace body outlet, and a supporting wall used for supporting carbon paper is formed on the top wall of the supporting piece. According to the carbonization furnace, the supporting piece extending in the moving direction of the carbon paper is arranged, the continuous and stable supporting wall used for supporting the carbon paper is formed on the top wall of the supporting piece, in the high-temperature carbonization technological process of the carbon paper, the carbon paper can do planar motion along the supporting wall of the supporting piece, and the situation that the carbon paper is softened and concaved downwards in gaps between the heating elements is avoided as much as possible; the flatness of the carbon paper is improved; meanwhile, the problems of paper jam and snap due to the fact that the carbon paper falls into gaps of the heating elements are avoided as far as possible, and continuity and stability of carbon paper production are improved.

Description

A carbonization furnace and carbonization production line for carbon paper preparation Technical Field

[0001] This application relates to the field of carbon paper preparation technology, specifically to a carbonization furnace and carbonization production line for carbon paper preparation. Background Technology

[0002] Carbon paper is an important component of hydrogen fuel cells, playing a role in transferring water vapor, electrons, and heat. The preparation of carbon paper is characterized by numerous and complex processes.

[0003] High-temperature carbonization is a crucial step in carbon paper production. Its main purpose is to convert the solidified resin within the carbon paper into resin-carbon, while simultaneously removing internal impurities to form a high-purity carbon structure, laying the foundation for subsequent graphitization. Currently, high-temperature carbonization is primarily achieved using a carbonization furnace. The carbon paper enters the furnace through the inlet and undergoes high-temperature carbonization under the protection of an inert gas atmosphere. It is then pulled out from the furnace outlet for winding or graphitization. However, the following problems exist in actual operation: the carbon paper is easily jammed or even broken when passing between the heating rods inside the furnace; after entering the furnace, the carbon paper softens and dents in the gaps between the heating rods, affecting its flatness. These problems seriously hinder the continuous, stable, and high-quality carbonization process. Summary of the Invention

[0004] The purpose of this application is to provide a carbonization furnace and carbonization production line for the preparation of carbon paper, which solves the problems of carbon paper jamming, deformation, and poor flatness.

[0005] To solve the above-mentioned technical problems, this application provides a carbonization furnace for carbon paper preparation, comprising:

[0006] The furnace body includes a furnace inlet located at the front end of the furnace body and a furnace outlet located at the rear end of the furnace body;

[0007] A support member extends in a front-rear direction and is at least partially disposed inside the furnace body, between the furnace inlet and the furnace outlet, wherein the top wall of the support member forms a support wall for supporting the carbon paper; wherein the front-rear direction is the direction of movement of the carbon paper.

[0008] The carbonization furnace of this application has at least one support member extending along the direction of carbon paper movement inside the furnace body. The top wall of the support member forms a continuous and stable support wall for supporting the carbon paper. During the high-temperature carbonization process of the carbon paper, the carbon paper can move in a plane along the support wall of the support member, which can avoid the carbon paper softening and sinking in the gaps between the heating elements as much as possible, improve the deformation problem of the carbon paper after high-temperature softening, improve the flatness of the carbon paper, and avoid the problem of paper jamming and tearing caused by the carbon paper getting stuck in the gaps between the heating elements, thereby improving the continuity and stability of carbon paper production.

[0009] Optionally, the support member includes:

[0010] Support plate;

[0011] The covering layer is an integral structure, connected to the support plate, and at least covers the top wall of the support plate located inside the furnace body, with the upper surface of the covering layer forming the support wall.

[0012] Optionally, the support plate includes multiple split parts, which are connected sequentially in the front-to-back direction.

[0013] Optionally, the support plate is a graphite plate;

[0014] And / or, the covering layer is graphite paper.

[0015] Optionally, the furnace body includes a furnace body, a front port portion, and a rear port portion, wherein:

[0016] The front port is connected to the front end of the furnace body, and the port of the front port forms the furnace body inlet. The rear port is connected to the rear end of the furnace body, and the port of the rear port forms the furnace body outlet. Both the front port and the rear port are provided with exhaust ports on their walls.

[0017] The carbonization furnace also includes a heating element and an air intake device. The heating element is located inside the furnace body, and the air intake device is connected to the exhaust ports at both ends.

[0018] Optionally, both the front port and the rear port are provided with gas seals, and the gas seals are closer to the furnace body than the exhaust port.

[0019] The carbonization furnace also includes a gas supply device for providing inert gas, and the gas supply device is connected to the gas seals at both ends.

[0020] Optionally, the carbonization furnace further includes:

[0021] A cooling body is connected to the inner wall of the front port and the rear port, and the exhaust port is located at the end of the cooling body away from the furnace body.

[0022] Optionally, the carbonization furnace further includes:

[0023] The heating elements are located inside the furnace body and are distributed on the upper and lower sides of the support member.

[0024] This application also provides a carbonization production line for preparing carbon paper, including the aforementioned carbonization furnace for preparing carbon paper.

[0025] The carbonization production line for carbon paper preparation described in this application includes the aforementioned carbonization furnace for carbon paper preparation, and therefore has the same technical effects as the aforementioned carbonization furnace for carbon paper preparation, which will not be repeated here.

[0026] Optionally, the number of carbonization furnaces is two, and the two carbonization furnaces are arranged in a front-to-back direction;

[0027] The carbonization production line also includes a traction roller group, which is arranged between the two carbonization furnaces. Attached Figure Description

[0028] Figure 1 is a schematic diagram of a specific embodiment of the carbonization production line for carbon paper preparation provided in this application;

[0029] The reference numerals in Figure 1 are as follows:

[0030] 1-Carbonization furnace;

[0031] 11-Furnace body; 11a-Furnace inlet; 11b-Furnace outlet; 111-Furnace body; 1111-Structural layer; 1112-Water cooling layer; 1113-Insulation layer; 112-Front end; 113-Rear end; a-Exhaust port; b-Gas seal;

[0032] 12-Support component; 121-Support plate; 1211-Separated part; 122-Covering layer;

[0033] 13-Heating element; 131-Heating rod;

[0034] 14 - Inhalation device;

[0035] 15 - Intake pipe; 151 - Main intake pipe; 152 - Intake branch pipe;

[0036] 16-Flow valve;

[0037] 17-Vacuum pump; 18-Evacuation pipe; 19-Pressure sensor; 101-Oxygen analyzer; 102-Cooling element;

[0038] 103 - Water cooling circulation equipment; 104 - Water circulation pipeline; 105 - Temperature sensor;

[0039] 2-Traction roller assembly; 21-Upper traction roller; 22-Lower traction roller; 23-Lifting mechanism;

[0040] 3-Unwinding shaft; 4-Rewinding shaft; 5-Tension detection device; 6-Alignment device;

[0041] 01-Carbon paper. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Please refer to Figure 1, which is a schematic diagram of a specific embodiment of the carbonization production line for carbon paper preparation provided in this application.

[0044] This application provides a carbonization furnace 1 for preparing carbon paper, comprising:

[0045] The furnace body 11 includes a furnace body inlet 11a located at the front end of the furnace body and a furnace body outlet 11b located at the rear end of the furnace body;

[0046] The support member 12 extends in the front-back direction and is at least partially disposed inside the furnace body 11, between the furnace body inlet 11a and the furnace body outlet 11b. The top wall of the support member 12 forms a support wall for supporting the carbon paper 01. The front-back direction is the direction of movement of the carbon paper 01.

[0047] In the carbonization furnace 1 of this application embodiment, a support member 12 extending along the movement direction of the carbon paper 01 is provided at least inside the furnace body 11. The top wall of the support member 12 forms a continuous and stable support wall for supporting the carbon paper 01. During the high-temperature carbonization process of the carbon paper 01, the carbon paper 01 can move in a plane along the support wall of the support member 12, which avoids the carbon paper 01 softening and sinking in the gap between the heating elements as much as possible, improves the deformation problem of the carbon paper 01 after high-temperature softening, improves the flatness of the carbon paper 01, and avoids the problem of paper jamming and tearing caused by the carbon paper 01 getting stuck in the gap between the heating elements as much as possible, thereby improving the continuity and stability of the production of carbon paper 01.

[0048] In some embodiments of this application, the support member 12 includes:

[0049] Support plate 121;

[0050] Covering layer 122 is an integral structure. Covering layer 122 is connected to support plate 121 and at least covers the top wall of support plate 121 inside furnace body 11. The upper surface of covering layer 122 forms a support wall.

[0051] As described above, the support member 12 of this application adopts a combined structure including a cover layer 122 and a support plate 121. First, the cover layer 122 is an integral structure with a smooth and continuous surface without any seams, minimizing the risk of scratches, paper jams, or even breakage caused by seams getting stuck or edge friction during the movement of the carbon paper 01, thereby further improving the continuity and stability of carbon paper 01 production. Second, since the cover layer 122 can eliminate the seams of the support plate 121, the support plate 121 can adopt a split design. For example, in some embodiments, the support plate 121 includes multiple split parts 1211. The 1211 components are connected sequentially along the front and rear directions, solving the problem of difficult processing of ultra-long integral support plates (usually furnace bodies with a length of over 10 meters), thus improving process feasibility. Furthermore, by adjusting the number of the split parts 1211, the support component 12 can flexibly adapt to the installation requirements of furnace bodies 11 of different sizes. In addition, the combined structural design of the cover layer 122 and the support plate 121 makes the maintenance of the support component 12 more convenient. For example, when the cover layer 122 is worn, only the cover layer 122 needs to be replaced, and the support plate 121 can still continue to play a supporting role, improving the utilization rate of the support plate 121 and reducing maintenance costs.

[0052] In some embodiments of this application, the support plate 121 is a graphite plate, and / or the cover layer 122 is graphite paper.

[0053] As set above, the graphite material has excellent thermal stability in high-temperature environments, and can withstand the cyclic conditions of 800-1600℃ in the carbonization furnace for a long time, avoiding deformation of the support component 12 due to high temperature and ensuring that the support component 12 can play a stable supporting role for a long time.

[0054] Of course, the support plate 121 is not limited to the graphite material mentioned above. In other embodiments of this application, the support plate 121 can also be made of ceramic material, such as alumina ceramic.

[0055] Furthermore, there are no restrictions on the way the support member 12 is fixed inside the furnace body 11. For example, the carbonization furnace 1 also includes at least two parallel support rods. The support rods extend in the front-rear direction and are connected to the front wall and rear wall of the furnace body 11. The furnace body inlet 11a is located on the front wall, the furnace body outlet 11b is located on the rear wall, and the support member 12 is supported above the support rods.

[0056] Please continue to refer to Figure 1. In some embodiments of this application, the furnace body 11 includes a furnace body 111, a front port portion 112, and a rear port portion 113, wherein:

[0057] The front port 112 is connected to the front end of the furnace body 111, and the port of the front port 112 forms the furnace body inlet 11a. The rear port 113 is connected to the rear end of the furnace body 111, and the port of the rear port 113 forms the furnace body outlet 11b. Both the front port 112 and the rear port 113 are provided with exhaust ports a.

[0058] The carbonization furnace 1 also includes a heating element 13 and an air intake device 14. The heating element 13 is located inside the furnace body 111, and the air intake device 14 is connected to the exhaust ports a at both ends.

[0059] Before carrying out the high-temperature carbonization process of carbon paper 01, it is usually necessary to evacuate the carbonization furnace 1 and introduce inert protective gas. The purpose is to maintain an inert gas environment inside the furnace body 11, to prevent air from entering the furnace body 11 as much as possible, and to prevent the carbon paper 01 from reacting with oxygen in the air, damaging the structure of the carbon paper 01, and affecting the carbonization effect.

[0060] As configured above, the heating element 13 is located inside the furnace body 111, meaning that the carbon paper 01 only begins high-temperature carbonization when it moves into the furnace body 111. Simultaneously, in this embodiment, exhaust ports a are provided on the walls of both the front port 112 and the rear port 113. One exhaust port a is positioned between the furnace inlet 11a and the furnace body 111 along the front-to-back direction, and the other exhaust port a is positioned between the furnace outlet 11b and the furnace body 111 along the front-to-back direction. The suction device 14 is connected to both exhaust ports a. Even if a small amount of air enters the front port 112 or the rear port 113 through the furnace inlet 11a or furnace outlet 11b, the suction device 14 can promptly expel this infiltrated air, ensuring that air does not enter the interior of the furnace body 111 as much as possible, thus guaranteeing the carbonization effect of the carbon paper 01. Furthermore, the above-mentioned suction device 14 and exhaust ports a can also promptly remove the fumes generated during the high-temperature carbonization process, achieving a smoke extraction effect.

[0061] As shown in Figure 1, the carbonization furnace 1 also includes an air intake pipe 15 and a flow valve 16. The air intake pipe 15 has an air intake main pipe 151 and an air intake branch pipe 152 connected to the air intake main pipe 151. The air intake main pipe 151 is connected to the air intake device 14, and the exhaust port a is connected to the air intake branch pipe 152. The flow valve 16 is connected to the corresponding air intake branch pipe 152 to adjust the air intake flow rate.

[0062] Furthermore, in some embodiments of this application, the wall portions of both the front port portion 112 and the rear port portion 113 are provided with gas seals b, and the gas seals b are closer to the furnace body 111 than the exhaust port a.

[0063] The carbonization furnace 1 also includes a gas supply device (not shown in the figure) for providing inert gas, and the gas supply device and the gas seals b at both ends are connected.

[0064] In the high-temperature carbonization process of carbon paper 01, the interior of the furnace body 111 needs to maintain an inert gas environment to prevent air from entering. Gas seals b located on the walls of the front port 112 and rear port 113 are connected to a gas supply device, which provides inert gases such as nitrogen or argon. These inert gases form a gas seal layer between the furnace inlet 11a and the furnace body 111, and between the furnace outlet 11b and the furnace body 111, preventing external air from entering the interior of the furnace body 111 through the furnace inlet 11a or furnace outlet 11b. In this way, the interior of the furnace body 111 can maintain an oxygen-free environment, preventing the carbon paper 01 from reacting with oxygen at high temperatures, avoiding structural damage to the carbon paper 01, and ensuring the carbonization effect.

[0065] Meanwhile, due to the aforementioned exhaust port a, the flow rate of inert gas supplied by the gas seal port b can be reduced, thereby reducing the consumption of inert gas.

[0066] As shown in Figure 1, the carbonization furnace 1 in this embodiment of the application also includes a vacuum pump 17 and an exhaust pipe 18. One end of the exhaust pipe 18 is connected to the interior of the furnace body 111, and the other end of the exhaust pipe 18 is connected to the vacuum pump 17, which is used to evacuate the interior of the carbonization furnace 1 before the high-temperature carbonization process.

[0067] The bottom wall of the furnace body 111 is provided with inert gas inlets at intervals along the front-to-back direction. The inert gas inlets are connected to a gas supply device, which is used to introduce inert protective gas into the interior of the furnace body 11, thereby maintaining an inert gas environment inside the furnace body 11.

[0068] As shown in Figure 1, the carbonization furnace 1 also includes a pressure sensor 19, which is used to monitor the pressure inside the furnace body 11 in real time to ensure that the pressure inside the furnace body 11 is not lower than atmospheric pressure and to prevent air from entering the interior of the furnace body 11.

[0069] Furthermore, as shown in Figure 1, exhaust ports a are also provided on the front and rear end walls of the furnace body 111 to promptly discharge the flue gas generated during the high-temperature carbonization process, while regulating the internal air pressure of the furnace body 22 to prevent the internal air pressure of the furnace body 22 from being too high.

[0070] As shown in Figure 1, the carbonization furnace 2 also includes an oxygen analyzer 101, which is connected to the inner wall of the furnace body 11 and is used to monitor the oxygen content inside the furnace body 11 in real time.

[0071] Please continue to refer to Figure 1. In some embodiments of this application, the carbonization furnace 1 further includes:

[0072] Cooling body 102 is connected to the inner wall of front port portion 112 and rear port portion 113, and exhaust port a is located at the end of cooling body 102 away from furnace body 111.

[0073] As described above, the cooling body 102 is connected to the inner walls of the front port portion 112 and the rear port portion 113 to establish a low-temperature environment inside the front port portion 112 and the rear port portion 113. On the one hand, the front port portion 112 and the rear port portion 113 can serve as a transition area to prevent the carbon paper 01 from entering the furnace body 11 and causing structural damage due to a sudden increase in temperature. On the other hand, it keeps the temperature of the area of ​​the furnace body 11 near the furnace body inlet 11a and the furnace body outlet 11b within an acceptable range, preventing operators from accidentally touching the furnace body 11 and causing safety accidents, thus improving operational safety.

[0074] As shown in Figure 1, the carbonization furnace 1 also includes a water cooling circulation device 103 and a water circulation pipeline 104. The interior of the cooling body 102 has a cooling channel. The water circulation pipeline 104 connects the cooling channel inside the cooling body 102 and the water cooling circulation device 103, and exchanges heat through water circulation. The flow valve 16 is connected to the water circulation pipeline 104 to regulate the flow rate of the cooling water, thereby realizing the temperature regulation of the cooling body 102.

[0075] Please continue to refer to Figure 1. In some embodiments of this application, the carbonization furnace 1 further includes:

[0076] Heating element 13 is located inside furnace body 11 and is distributed on the upper and lower sides of support member 12.

[0077] As set up above, during the high-temperature carbonization process of carbon paper 01, the heating element 13 located on the upper side of the support 12 can directly heat the top surface of carbon paper 01, and the heating element 13 located on the lower side of the support 12 can directly conduct heat to the bottom surface of carbon paper 01 through the support 12, ensuring that carbon paper 01 is heated evenly along the thickness direction, eliminating the temperature difference caused by unilateral heating, and ensuring the carbonization effect.

[0078] As shown in Figure 1, in this embodiment of the application, the heating element 13 includes a plurality of heating rods 131. The plurality of heating rods 131 located on the upper side of the support member 12 are spaced apart in the front-back direction, and the plurality of heating rods 131 located on the lower side of the support member 12 are spaced apart in the front-back direction. That is, the heating rods 131 are arranged at intervals along the movement direction of the carbon paper 01. Before the high-temperature carbonization process of the carbon paper 01 begins, the interior of the furnace body 11 usually needs to be preheated.

[0079] Furthermore, as shown in Figure 1, temperature sensors 105 are spaced apart along the front-to-back direction at the upper interior of the furnace body 111 to monitor the temperature inside the furnace body 11 in real time. The temperature sensors 105 and the corresponding heating rods 131 located below them form a temperature control system. Each temperature zone can be controlled independently, and gradient heating can be achieved during operation.

[0080] Please continue referring to Figure 1. In this embodiment, the wall of the furnace body 111 includes a structural layer 1111, a water cooling layer 1112, and a heat insulation layer 1113 arranged sequentially from the outside to the inside. The water cooling layer 1112 is connected to the water cooling circulation device 103, and the heat insulation layer 1113 is formed by insulating refractory bricks and alumina insulation cotton. As described above, this ensures that the interior of the furnace body 11 can maintain the required high temperature, improving the carbonization effect, while keeping the outer surface temperature of the furnace body 11 low, preventing accidental contact by operators and improving operational safety.

[0081] As described above, in this embodiment, the cooling mode, water temperature, and flow rate of the water cooling circulation device 103 are all controllable; the flow rate of each branch of the air supply device is controllable; and the air extraction volume of each branch of the air intake device 14 is controllable. The water cooling circulation device 102, the air supply device, and the air intake device 14 are all mature products and will not be described in detail here.

[0082] Furthermore, as can be seen from Figure 1, the front wall of the front port portion 112 and the rear wall of the rear port portion 113 are both split structures, specifically including an upper end wall and a lower end wall. The upper end wall and the lower end wall form a furnace inlet 11a or a furnace outlet 11b. The upper end wall and the lower end wall can move closer to each other or further away to adjust the width of the furnace inlet 11a or the furnace outlet 11b.

[0083] This application also provides a carbonization production line for preparing carbon paper, including the aforementioned carbonization furnace 1 for preparing carbon paper.

[0084] The carbonization production line for carbon paper preparation in this application includes the aforementioned carbonization furnace 1 for carbon paper preparation, and therefore has the same technical effects as the aforementioned carbonization furnace 1 for carbon paper preparation, which will not be repeated here.

[0085] Please continue to refer to Figure 1. In this embodiment of the application, there are two carbonization furnaces 1, which are arranged in a front-to-back direction.

[0086] The carbonization production line also includes a traction roller group 2, which is located between two carbonization furnaces 1.

[0087] As shown in Figure 1, the carbonization production line for carbon paper preparation in this embodiment includes two carbonization furnaces 1. The carbonization furnace 1 near the front end of the carbonization production line is a low-temperature furnace, and the carbonization furnace 1 near the rear end of the carbonization production line is a high-temperature furnace. The high-temperature furnace and the low-temperature furnace have basically the same structure. The heating rod 131 inside the low-temperature furnace is an iron-chromium-aluminum resistance wire heating rod. The length of the furnace body 11 of the high-temperature furnace can be appropriately lengthened according to the process requirements. The heating rod 131 inside the high-temperature furnace includes multiple silicon carbide rods 1311 and multiple high-purity graphite heating rods 1312. The silicon carbide rods 1311 are located at the front end of the high-purity graphite heating rods 1312. The function of the low-temperature furnace is to exhaust and remove coke from the carbon paper 01 and remove impurities, and the temperature is gradually increased from room temperature to 800°C. The function of the high-temperature furnace is to complete the resin carbonization, so that a network carbon structure is formed inside the carbon paper 01, and the temperature is gradually increased from 800°C to 1600°C.

[0088] Meanwhile, in this embodiment, the traction roller group 2 is set between the two carbonization furnaces 1. Compared with the traction roller group 2 being set at the rear end of the high-temperature furnace, in this embodiment, the temperature of the carbon paper 01 at the traction point is lower and the distance to the unwinding shaft 3 is shorter, which can minimize the risk of the carbon paper 01 being pulled apart.

[0089] Please continue to refer to Figure 1. In this embodiment of the application, the traction roller group 2 includes an upper traction roller 21, a lower traction roller 22, two servo motors, and a lifting mechanism 23. The upper traction roller 21 and the lower traction roller 22 are each connected to a servo motor. The servo motor is used to drive the upper traction roller 21 and the lower traction roller 22 to rotate, so as to apply traction force to the carbon paper 01 through the upper traction roller 21 and the lower traction roller 22. The lifting mechanism 23 is used to drive the upper traction roller 21 or the lower traction roller 22 to move in the vertical direction to realize the adjustment of the working pressure.

[0090] Specifically, the lifting mechanism can be a lifting cylinder.

[0091] Furthermore, in this embodiment, the carbonization production line also includes an unwinding shaft 3 located at the front end of the production line, a winding shaft 4 located at the end of the production line, and auxiliary devices. The auxiliary devices include a tension detection device 5 located near the unwinding shaft 3, an adjustment device 6 located near the winding shaft 4, and a tension detection device 5. During the high-temperature carbonization process of the carbon paper 01, the running speed of the traction roller group 2 is set, and the traction roller group 2 moves the carbon paper 01. The unwinding shaft 3 and the adjacent tension detection device 5, and the winding shaft 4 and the tension detection device 5 at its front end respectively form a tension feedback speed control system. The specific control principle is that when the tension detection device 5 detects that the tension of the carbon paper 01 deviates from the set range, it adjusts the speed of its interlocked drive component through closed-loop feedback PLC control, so that the tension of the carbon paper 01 returns to the set range. The traction roller group 2, the unwinding shaft 3, the winding shaft 4, and the two tension detection devices 5 work together to effectively reduce the traction tension of the carbon paper 01 and ensure the stable operation of the carbon paper 01.

[0092] The working process of the carbonization production line for carbon paper preparation according to this invention is as follows:

[0093] Before operation, carbon ropes need to be strung from the front end to the end of the production line to pull carbon paper 01, and the carbon ropes and carbon paper 01 should be properly connected.

[0094] The furnace body 11 is evacuated and filled with inert protective gas;

[0095] Set the heating curve of furnace body 11, start the water cooling circulation equipment 103 and the gas supply device, and start heating;

[0096] Once the temperature reaches and stabilizes, start the production line and begin operations;

[0097] Production is complete; the temperature is then lowered and cooled.

[0098] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A carbonization furnace for preparing carbon paper, characterized in that, include: The furnace body includes a furnace inlet located at the front end of the furnace body and a furnace outlet located at the rear end of the furnace body; A support member extends in a front-rear direction and is at least partially disposed inside the furnace body, between the furnace inlet and the furnace outlet, wherein the top wall of the support member forms a support wall for supporting the carbon paper; wherein the front-rear direction is the direction of movement of the carbon paper.

2. The carbonization furnace for preparing carbon paper according to claim 1, characterized in that, The support component includes: a support plate; a covering layer, the covering layer being an integral structure, the covering layer being connected to the support plate and at least covering the top wall of the support plate located inside the furnace body, the upper surface of the covering layer forming the support wall.

3. The carbonization furnace for preparing carbon paper according to claim 2, characterized in that, The support plate includes multiple separate parts, which are connected sequentially in the front-to-back direction.

4. The carbonization furnace for preparing carbon paper according to claim 2, characterized in that, The support plate is a graphite plate; and / or the covering layer is graphite paper.

5. The carbonization furnace for preparing carbon paper according to any one of claims 1-4, characterized in that, The furnace body includes a furnace body, a front port, and a rear port. The front port is connected to the front end of the furnace body and forms the furnace inlet. The rear port is connected to the rear end of the furnace body and forms the furnace outlet. Both the front and rear ports have exhaust ports on their walls. The carbonization furnace also includes a heating element and a suction device. The heating element is located inside the furnace body, and the suction device is connected to the exhaust ports at both ends.

6. The carbonization furnace for preparing carbon paper according to claim 5, characterized in that, Both the front port and the rear port are provided with gas seals, which are closer to the furnace body than the exhaust port. The carbonization furnace also includes a gas supply device for providing inert gas, which is connected to the gas seals at both ends.

7. The carbonization furnace for preparing carbon paper according to claim 5, characterized in that, The carbonization furnace further includes a cooling body connected to the inner wall of the front port and the rear port, and the exhaust port is located at the end of the cooling body away from the furnace body.

8. The carbonization furnace for preparing carbon paper according to any one of claims 1-4, characterized in that, The carbonization furnace also includes heating elements located inside the furnace body and disposed on the upper and lower sides of the support member.

9. A carbonization production line for preparing carbon paper, characterized in that, Includes the carbonization furnace for carbon paper preparation as described in any one of claims 1-8.

10. The carbonization production line for preparing carbon paper according to claim 9, characterized in that, The carbonization furnace is of two types, and the two carbonization furnaces are arranged in a front-to-back direction; the carbonization production line also includes a traction roller group, which is arranged between the two carbonization furnaces.

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