Conveyor Belt Decarbonization Furnace

Abstract

This application relates to the field of material recycling equipment technology, specifically to a conveyor belt type decarbonization furnace, comprising: a furnace body and a conveyor belt device passing through the furnace body; a temperature control device connected to the furnace body and adjusting the temperature of the furnace body; an oxidizing gas conveying device including several gas supply pipes connected to the furnace body for introducing oxidizing gas into the furnace body; and an exhaust device located at the top of the furnace body for extracting gas from the furnace body, the exhaust device maintaining a negative pressure state inside the furnace body. This conveyor belt type decarbonization furnace transports fiber composite materials via a conveyor belt device, and during the conveying process, oxidizing gas is sprayed from the gas supply pipes to oxidize residual carbon in the fiber composite materials. It can perform large-scale, continuous, low-cost, and low-energy-consumption decarbonization of fiber composite materials after pyrolysis, achieving excellent decarbonization results.

Description

Technical Field

[0001] This application relates to the field of material recycling equipment technology, and in particular to a conveyor belt decarbonization furnace. Background Technology

[0002] Fiber-reinforced composite materials (FRPs) possess advantages such as light weight, high strength, high modulus, and corrosion resistance, and are widely used in aerospace, sports and leisure, automotive, construction, and bridge reinforcement. In 2018, my country's total FRP output reached 4.3 million tons, and it is projected to reach approximately 5.56 million tons by 2023, surpassing Germany and Japan to become the world's second-largest producer. However, with the increasingly widespread application of FRPs in China, the proper disposal of FRP waste has become a critical issue. Existing FRPs are primarily based on thermosetting resins, which are non-degradable under natural conditions. Discarded FRP wind turbine blades and carbon fiber composites have already caused serious environmental pollution and significant resource waste. Currently, the recycling of FRP waste in my country has not yet reached industrialization. Even globally, only a few companies in Japan, Germany, and the UK have dedicated FRP recycling industries.

[0003] Currently, the industry typically uses pyrolysis to recycle fiber composite materials. However, there is no dedicated carbon removal equipment for the residual carbon adhering to the fibers after the pyrolysis reaction. Existing carbon removal operations are usually completed within the pyrolysis furnace, meaning that carbon removal continues even after the pyrolysis reaction of the fiber composite material is finished. This results in excessively long cycles for each pyrolysis and carbon removal process, severely limiting production capacity and preventing continuous carbon removal. Summary of the Invention

[0004] In order to solve or at least partially solve the above-mentioned technical problems, this application provides a conveyor belt decarbonization furnace.

[0005] A conveyor belt type decarbonization furnace, comprising:

[0006] Furnace body and conveyor belt device disposed through said furnace body;

[0007] A temperature control device is connected to the furnace body and adjusts the temperature of the furnace body;

[0008] An oxidizing gas conveying device includes several gas supply pipes that connect to the furnace body for introducing oxidizing gas into the furnace body;

[0009] An exhaust device is installed at the top of the furnace body to extract gas from the furnace body, thereby maintaining a negative pressure state inside the furnace body.

[0010] A further technical solution could be that the conveyor belt device includes:

[0011] The mesh belt has multiple air vents:

[0012] A drive mechanism is used to drive the mesh belt to move along the length of the furnace body;

[0013] The gas delivery pipe is connected below the mesh belt and delivers the oxidizing gas in the direction of the mesh belt.

[0014] A further technical solution could be that the gas delivery pipeline includes:

[0015] Several main pipelines are connected to the furnace body from the outside of the furnace body;

[0016] At least two branch pipes are provided, which are arranged at intervals along the length or width of the mesh belt, and each branch pipe is provided with a plurality of air jets distributed along its own length.

[0017] A further technical solution could be that the temperature control device includes:

[0018] A heating chamber is disposed on the inner wall of the furnace body, and a first electric heating device is disposed in the heating chamber for heating the internal space of the furnace body;

[0019] The main pipeline passes through the heating chamber and is heated via the heating chamber.

[0020] A further technical solution could be that at least a portion of the main pipeline is folded into an S-shape within the heating chamber.

[0021] A further technical solution may also include: the temperature control device further includes: a first temperature sensor, which is disposed in the heating chamber and is communicatively connected to the first electric heating device.

[0022] A further technical solution could be that the temperature control device further includes:

[0023] A second electric heating device is installed inside the furnace body;

[0024] A second temperature sensor is installed inside the furnace and is communicatively connected to the second electric heating device.

[0025] A further technical solution may also include: a pressure sensor, installed inside the furnace body to detect the furnace pressure, the pressure sensor being communicatively connected to the exhaust device and / or the oxidizing gas delivery device, the exhaust device and / or the oxidizing gas delivery device regulating the pressure inside the furnace body by controlling the gas flow rate.

[0026] Further technical solutions may also include:

[0027] The discharge pipe is connected to the furnace body;

[0028] The mesh belt extends out of the furnace body through the discharge pipe;

[0029] The discharge pipe has a first angle with the horizontal plane, and the first angle is in the range of 10° to 35°.

[0030] In the embodiments of this application, the conveyor belt decarbonization furnace transports fiber composite materials through a conveyor belt device, and during the conveying process, oxidizing gas is sprayed out through a gas supply pipe to oxidize the residual carbon in the fiber composite materials. It can perform decarbonization operations on fiber composite materials that have completed pyrolysis reaction on a large scale, continuously, at low cost and with low energy consumption, and has a good decarbonization effect. Attached Figure Description

[0031] To more clearly illustrate the embodiments of this application, the relevant drawings will be briefly described below. It is understood that the drawings described below are only for illustrating some embodiments of this application, and those skilled in the art can obtain many other technical features and connections not mentioned herein based on these drawings.

[0032] Figure 1 This application provides a schematic diagram of the structure of a conveyor belt type decarbonization furnace;

[0033] Figure 2 A schematic cross-sectional view of the furnace body structure of a conveyor belt decarbonization furnace provided in this application;

[0034] Figure 3 A schematic diagram of the exhaust device for a conveyor belt decarbonization furnace provided in this application.

[0035] The reference numerals and names in the figure are as follows:

[0036] 1. Furnace body; 2. Conveyor belt device; 21. Mesh belt; 22. Drive mechanism; 3. Gas supply pipeline; 31. Main pipeline; 32. Branch pipeline; 4. Heating chamber; 41. First electric heating device; 5. Exhaust outlet; 51. Fan; 52. One-way valve; 6. Exhaust pipeline; 7. Discharge pipeline. Detailed Implementation

[0037] The technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0038] The inventors of this application have discovered that the industry typically uses pyrolysis to recycle fiber composite materials. However, there is no dedicated carbon removal equipment for the residual carbon adhering to the fibers after the pyrolysis reaction. Existing carbon removal operations are usually completed within the pyrolysis furnace, meaning that carbon removal continues even after the pyrolysis reaction of the fiber composite material is finished. This results in excessively long cycles for each pyrolysis and carbon removal process, significantly limiting production capacity and preventing continuous carbon removal.

[0039] In view of this, this application provides a conveyor belt decarbonization furnace, which is independent of the pyrolysis furnace and can perform decarbonization operations on fiber composite materials that have completed pyrolysis reaction on a large scale, continuously, at low cost and with low energy consumption.

[0040] Implementation Method 1

[0041] The first embodiment of this application proposes a conveyor belt type decarbonization furnace, see [link]. Figure 1 and Figure 2 As shown, the conveyor belt type decarbonization furnace includes:

[0042] Furnace body 1 and conveyor belt device 2 disposed through the furnace body 1;

[0043] A temperature control device is connected to the furnace body 1 and adjusts the temperature of the furnace body 1;

[0044] An oxidizing gas conveying device includes several gas supply pipes 3 that connect to the furnace body 1 for introducing oxidizing gas into the furnace body 1;

[0045] An exhaust device is installed at the top of the furnace body 1 to extract gas from the furnace body 1, and the exhaust device keeps the furnace body 1 under negative pressure.

[0046] The furnace body 1 in this application serves as the frame structure of the conveyor belt-type decarbonization furnace. On one hand, it provides installation positions for various components; on the other hand, it also serves as the space required for decarbonization operations, isolating it from the outside environment and providing an independent operating space to ensure smooth decarbonization. In the embodiments of this application, the furnace body 1 can be configured as a horizontal structure, with various support beams, support columns, and other support components at the bottom for supporting the furnace body 1. Furthermore, the furnace body 1 in this application can be externally wrapped with insulation material to prevent internal heat loss, reduce energy consumption, and also insulate against internal heat to prevent burns to personnel due to accidental contact.

[0047] A conveyor belt device is used to transport the fiber composite material that needs decarbonization treatment. It enters the furnace body 1 from one side and extends from the other side, then circulates back to the entry side to achieve continuous feeding. During the transport of the fiber composite material, the residual carbon on the fiber composite material inside the furnace body 1 undergoes an oxidation reaction, achieving decarbonization. Since the decarbonization time required varies for different types of fiber composite materials, in actual production, those skilled in the art can control the conveyor belt device 2 to adjust the moving speed of the fiber composite material according to the type of fiber composite material requiring decarbonization treatment, thereby controlling the decarbonization time and ensuring complete decarbonization.

[0048] In this application, the gas supply pipe 3 is used to introduce oxidizing gas into the furnace body 1. By using the oxidizing gas to wash the fiber composite material at a certain temperature, an oxidation reaction can occur while simultaneously achieving decarbonization. Specifically, in this embodiment, multiple gas supply pipes 3 are arranged inside the furnace body 1 and can be evenly distributed along the conveying direction of the conveyor belt device 2. During the process of being driven and conveyed by the conveyor belt device 2, the fiber composite material passes sequentially through the spray areas corresponding to the multiple gas supply pipes 3 and is washed by the oxidizing gas sprayed from the gas supply pipes 3 corresponding to these areas.

[0049] The extraction device is used to extract the gas inside the furnace body 1, maintaining a negative pressure state inside the furnace body 1. This gas includes oxidizing gas ejected from the gas supply pipe 3 and gas generated by the reaction of the fiber composite material. When the residual carbon on the surface of the fiber composite material comes into contact with the oxidizing gas, it undergoes an oxidation reaction, producing carbon dioxide. Therefore, by installing the extraction device, while extracting the gas inside the furnace body 1, the residual carbon filling the internal space of the furnace body 1 can be collected in the form of carbon dioxide. Furthermore, because the furnace body 1 is maintained under negative pressure, the gas filling the internal space of the furnace body 1 will not leak out under the pressure, which helps maintain a clean external working environment.

[0050] Existing carbon removal equipment typically uses electric heating. However, this method relies on heat radiation from heating wires or material-to-material contact transfer, which can easily lead to uneven temperatures within the furnace body 1. In this embodiment, heating the fiber composite material with gas can achieve a more uniform reaction temperature. Specifically, the oxidizing gas in this embodiment can be highly compressed air at 400℃-500℃. High-compressed air is introduced into the furnace body 1 through the gas supply pipe 3 to heat the fiber composite material. Compared to electric heating, heating with high-temperature gas has the advantage of better diffusion. The oxidizing gas comes into direct contact with the fiber composite material and diffuses through the gaps between the fibers, resulting in better heating and faster heat transfer.

[0051] Furthermore, in this embodiment, the advantage of using high-compressed air for heating and decarbonization is that high-compressed air is simple to prepare. It can be prepared by burning the pyrolysis gas generated during the pyrolysis of fiber composite materials to heat the air. The energy can be recovered and reused, and clean production can be achieved.

[0052] The conveyor belt decarbonization furnace may also include a temperature control device connected to the furnace body 1 to regulate its temperature. With compressed air as the primary heat source for the furnace body 1, the temperature control device can act as an auxiliary heat source to heat the furnace body 1, regulating its local temperature and preventing uneven temperature distribution in dead zones of gas diffusion, thereby further improving heating uniformity.

[0053] The conveyor belt decarbonization furnace of this application transports fiber composite materials through a conveyor belt device 2, and during the conveying process, oxidizing gas is sprayed out through a gas supply pipe 3 to oxidize the residual carbon in the fiber composite materials. It can perform decarbonization operations on fiber composite materials that have completed pyrolysis reaction on a large scale, continuously, at low cost and with low energy consumption, and has a good decarbonization effect.

[0054] Implementation Method 2

[0055] This implementation method is a further improvement based on implementation method one, and the improvement is as follows: Figure 1 and Figure 2 As shown, the conveyor belt device 2 includes:

[0056] Mesh belt 21, wherein the mesh belt 21 has multiple air vents:

[0057] Drive mechanism 22 is used to drive the mesh belt 21 to move along the length direction of the furnace body 1;

[0058] The gas delivery pipe 3 is connected below the mesh belt 21 and delivers the oxidizing gas in the direction of the mesh belt 21.

[0059] The mesh belt 21 supports the fiber composite material and is driven by the drive mechanism 22 to move the fiber composite material. Ventilation holes on the mesh belt 21 allow oxidizing gas to pass through. An air supply pipe 3 connects to the bottom of the mesh belt 21 and delivers oxidizing gas in the direction of the mesh belt 21. The oxidizing gas ejected from the air supply pipe 3 can pass through the ventilation holes on the mesh belt 21 from below and wash the fiber composite material on the upper surface of the mesh belt 21, thus achieving better carbon removal.

[0060] It should be noted that the oxidizing gas ejected from the gas supply pipe 3 passes through the vent holes below the mesh belt 21 to initially oxidize the fiber composite material. The oxidizing gas located above the mesh belt 21 is extracted by the exhaust device. As the oxidizing gas moves inside the furnace body 1, it can further oxidize the fiber composite material. Through multiple oxidation reactions by the oxidizing gas, the residual carbon adhering to the fiber surface can be completely removed from the fiber composite material.

[0061] In this embodiment, the gas supply pipe 3 includes:

[0062] Several main pipelines 31 are connected to the furnace body 1 from the outside of the furnace body 1;

[0063] At least two branch pipes 32 are arranged at intervals along the length or width of the mesh belt 21, and multiple air jets are provided on the branch pipes 32 along their own length.

[0064] The main pipeline 31 serves as the primary conduit for supplying oxidizing gas into the furnace body 1. The branch pipeline 32 connects to the main pipeline 31 and also supplies oxidizing gas into the furnace body 1. By controlling the position of the branch pipeline 32 within the furnace body 1, the position of the oxidizing gas ejected from the furnace body 1 can be adjusted.

[0065] In this embodiment, as Figure 2 As shown, multiple main pipelines 31 enter the furnace body 1 from outside the furnace body 1 and extend downward from one side of the mesh belt 21 to connect with branch pipelines 32. Multiple branch pipelines 32 are arranged at intervals below the mesh belt 21 along the length direction of the mesh belt 21, and oxidizing gas is sprayed into the furnace body 1 through jet nozzles.

[0066] Furthermore, in this embodiment, the temperature control device includes:

[0067] Heating chamber 4 is disposed on the inner wall of the furnace body 1. A first electric heating device 41 is disposed in the heating chamber 4. The first electric heating device 41 is used to heat the internal space of the furnace body 1.

[0068] The main pipeline 31 passes through the heating chamber 4 and is heated via the heating chamber 4.

[0069] It should be noted that the heating chamber 4 is located on the furnace body 1 and can be in a ring shape, with a decarbonization space in the middle for decarbonization operations. The first heating device located in the heating chamber 4 can heat the heating chamber 4 and heat the decarbonization space through thermal radiation, thereby heating the fiber composite material in the decarbonization space.

[0070] When the fiber composite material undergoes decarbonization in the decarbonization space, the heating chamber 4 can heat the decarbonization space, thereby heating the fiber composite material located within the decarbonization space. Based on compressed air as the primary heat source, the heating chamber 4, equipped with the first electric heating device 41, can serve as an auxiliary heat source to assist in heating the fiber composite material, ensuring that the temperature inside the decarbonization space reaches the set temperature for the decarbonization operation and guaranteeing the normal operation of the decarbonization process.

[0071] Furthermore, since the main pipeline 31 is connected to the interior of the furnace body 1 and passes through the heating chamber 4 to enter the aforementioned decarbonization space, the heating chamber 4 can heat the main pipeline 31 that passes through the heating chamber 4.

[0072] In practical applications, the temperature of the compressed air entering the main pipeline 31 fluctuates, meaning it may not be within the specified temperature range (400℃-500℃). Therefore, when compressed air outside the specified temperature range passes through the heating zone, it can be influenced by the heating zone to adjust to the specified temperature range. Specifically, in this embodiment, the temperature inside the furnace body 1 should be maintained within the 400℃-500℃ temperature range, and the temperature inside the heating chamber 4 should also be within the 400℃-500℃ temperature range. When the compressed air entering the main pipeline 31 is below 400℃, it will be heated by the heating zone as it passes through, ensuring its temperature is within the 400℃-500℃ range when it enters the decarbonization space. When the compressed air entering the main pipeline 31 is above 500℃, i.e., above the temperature of the heating chamber 4, its heat will be transferred to the heating chamber 4 as it passes through, causing the temperature to drop to the 400℃-500℃ temperature range. In other words, the heating chamber 4 also has the function of stabilizing the temperature.

[0073] It should be noted that in actual use, the high-compressed air introduced into the main pipeline 31 can be preheated air, with a temperature close to the specified temperature range. By setting the heating chamber 4, the temperature of the high-compressed air is adjusted so that the temperature of the high-compressed gas entering the decarbonization space is always within the specified temperature range, thereby ensuring the decarbonization effect.

[0074] In this embodiment, in order to prolong the time that the high-compressed air passes through the heating chamber 4 and improve the temperature regulation effect of the heating chamber 4, the main pipeline 31 may be folded into an S-shape in at least part of the heating chamber 4.

[0075] Implementation Method 3

[0076] This embodiment is a further improvement based on embodiment two, and its improvement lies in: Figure 1As shown, the temperature control device further includes a first temperature sensor, which is disposed in the heating chamber 4 and is communicatively connected to the first electric heating device 41.

[0077] In practical use, the temperature inside the heating chamber 4 can be monitored in real time by the first temperature sensor, and the temperature of the heating chamber 4 can be adjusted by the first electric heating device 41 as needed.

[0078] In this embodiment, the temperature control device further includes:

[0079] A second electric heating device is installed inside the furnace body 1;

[0080] The second temperature sensor is installed inside the furnace body 1 and is communicatively connected to the second electric heating device.

[0081] Specifically, multiple second electric heating devices can be configured, each corresponding to a different area of ​​the decarbonization space, thus dividing the space into multiple temperature-controlled zones. Each electric heating device corresponds to one temperature-controlled zone. Second temperature sensors are installed within each temperature-controlled zone to monitor the temperature within that zone. In practical applications, the second temperature sensors can monitor the temperature of each temperature-controlled zone in real time, and, as needed, the second electric heating devices can be used to heat the corresponding temperature-controlled zones to achieve localized temperature regulation.

[0082] Example 4

[0083] This embodiment is a further improvement based on Embodiment 1. The improvement is that the conveyor belt decarbonization furnace further includes: a pressure sensor, which is installed inside the furnace body 1 and detects the pressure inside the furnace. The pressure sensor is communicatively connected to the exhaust device and / or the oxidizing gas delivery device. The exhaust device and / or the oxidizing gas delivery device regulate the pressure inside the furnace body 1 by controlling the gas flow rate.

[0084] The pressure inside the furnace is monitored in real time by a pressure sensor, and the gas flow rate of the extraction device and / or the oxidation gas delivery device is controlled according to the pressure inside the furnace to regulate the pressure inside the furnace body 1.

[0085] In this embodiment, as Figure 1 As shown, the exhaust device may include an exhaust outlet 5 disposed on the furnace body 1. The exhaust outlet 5 connects to the furnace interior space to allow the gas inside the furnace to be discharged.

[0086] like Figure 3 As shown, the air extraction device may further include:

[0087] The fan 51 is communicatively connected to the pressure sensor, and the fan 51 is positioned facing the air extraction outlet 5;

[0088] An exhaust pipe 6 is connected to the exhaust outlet 5, and a fan 51 is installed inside the exhaust pipe 6, with the fan 51 blowing air in the direction of the exhaust outlet 5.

[0089] A one-way valve 52 is installed inside the air extraction pipe 6.

[0090] The blower 51 is located inside the exhaust outlet 5 and blows air outwards from the furnace body 1. A pressure sensor installed inside the furnace body 1 detects the pressure inside the furnace body 1 and compares the detected pressure inside the furnace body 1 with the external pressure. Based on the comparison result, the speed of the blower is controlled to control the gas flow rate at the exhaust outlet 5, thereby adjusting the pressure inside the furnace body 1 so that the pressure inside the furnace body 1 is slightly lower than the external pressure, thus creating a slightly negative pressure state inside the furnace body 1.

[0091] It should be noted that the exhaust pipe 6 can be a conveying pipe for transporting gas from inside the furnace body 1 to other locations, or it can be a bypass pipe connected in parallel to one side of the conveying pipe. This bypass pipe can be connected to a temporary gas storage device. In this embodiment, as... Figure 3 As shown, the exhaust pipe 6 is a conveying pipe used to transport the gas produced by the reaction to other locations, and the fan 51 is directly installed inside the conveying pipe.

[0092] In addition, the gas flow direction of the one-way valve 52 is from inside the furnace body 1 to the outside, which can not only ensure the smooth delivery of gas from inside the furnace body 1, but also avoid the problem of excessive furnace pressure caused by reverse delivery of gas into the furnace body 1 due to gas pressure reasons.

[0093] Implementation Method 5

[0094] This implementation method is a further improvement based on implementation method four, and the improvement is as follows: Figure 1 As shown, the conveyor belt decarbonization furnace also includes:

[0095] The discharge pipe 7 is connected to the furnace body 1;

[0096] The mesh belt 21 extends out of the furnace body 1 through the discharge pipe 7.

[0097] The discharge pipe 7 corresponds to the discharge port on the furnace body 1, serving as a buffer space between the inside of the furnace body 1 and the outside. By setting up the discharge pipe 7, the influence of the outside on the temperature inside the furnace body 1 can be reduced, thus ensuring the normal operation of the decarbonization process inside the furnace body 1.

[0098] In this embodiment, the discharge pipe 7 has a first angle with the horizontal plane, and the first angle is in the range of 10° to 35°.

[0099] Specifically, the discharge pipe 7 slopes downward from one side of the furnace body 1 toward the direction in which the mesh belt 21 moves, forming a first angle with the horizontal plane. Due to the principle of hot air rising, when the high-temperature gas inside the furnace is located in the discharge pipe 7, the high-temperature gas is difficult to continue moving downward along the downwardly sloping discharge pipe 7. This can reduce the leakage of high-temperature gas to the outside to a certain extent and prevent outside gas from entering the furnace body 1 along the discharge pipe 7.

[0100] It should be noted that, because the pressure in furnace body 1 is lower than the external pressure, the high-temperature gas located in the discharge pipe 7 will be drawn into the furnace body 1 under the influence of the pressure difference. Therefore, under the influence of temperature and the pressure difference between the inside and outside of the furnace, the high-temperature gas moves in the discharge pipe 7 in an upward direction towards the furnace body 1. The applicant found that when the direction of movement of the high-temperature gas in the discharge pipe 7 is the same as or similar to the extension direction of the discharge pipe 7, the leakage of high-temperature gas is less, and the isolation effect against external gases is better.

[0101] Therefore, after comprehensively considering all the above factors and through multiple experiments and adjustments by the applicant, the optimal first included angle is within the range of 10° to 35°. At this angle, the movement direction of the high-temperature gas within the discharge pipe 7 is the same as or similar to the extension direction of the discharge pipe 7, resulting in less leakage of the high-temperature gas, better isolation from external gases, and effective energy saving.

[0102] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A conveyor belt type decarbonization furnace, characterized in that, include: Furnace body and conveyor belt device disposed through said furnace body; A temperature control device is connected to the furnace body and adjusts the temperature of the furnace body; An oxidizing gas conveying device includes several gas supply pipes that connect to the furnace body for introducing oxidizing gas into the furnace body; An exhaust device is installed at the top of the furnace body to extract gas from the furnace body, and the exhaust device keeps the furnace body under negative pressure. The conveyor belt device includes: The mesh belt has multiple air vents: A drive mechanism is used to drive the mesh belt to move along the length of the furnace body; The gas delivery pipe is connected below the mesh belt and delivers the oxidizing gas in the direction of the mesh belt; the gas delivery pipe includes: Several main pipelines are connected to the furnace body from the outside of the furnace body; At least two branch pipes are arranged at intervals along the length or width of the mesh belt, and each branch pipe is provided with a plurality of air jets distributed along its own length. The conveyor belt decarbonization furnace also includes: The discharge pipe is connected to the furnace body; The mesh belt extends out of the furnace body through the discharge pipe; The discharge pipe has a first angle with the horizontal plane, and the first angle is in the range of 10° to 35°.

2. The conveyor belt decarbonization furnace according to claim 1, characterized in that, The temperature control device includes: A heating chamber is disposed on the inner wall of the furnace body, and a first electric heating device is disposed in the heating chamber for heating the internal space of the furnace body; The main pipeline passes through the heating chamber and is heated via the heating chamber.

3. The conveyor belt decarbonization furnace according to claim 2, characterized in that, At least a portion of the main pipeline is folded into an S-shape within the heating chamber.

4. The conveyor belt decarbonization furnace according to claim 2, characterized in that, Also includes: The temperature control device further includes a first temperature sensor, which is disposed in the heating chamber and is communicatively connected to the first electric heating device.

5. The conveyor belt decarbonization furnace according to claim 4, characterized in that, The temperature control device further includes: A second electric heating device is installed inside the furnace body; A second temperature sensor is installed inside the furnace and is communicatively connected to the second electric heating device.

6. The conveyor belt decarbonization furnace according to claim 1, characterized in that, Also includes: A pressure sensor is installed inside the furnace body to detect the pressure inside the furnace. The pressure sensor is communicatively connected to the exhaust device and / or the oxidizing gas delivery device. The exhaust device and / or the oxidizing gas delivery device regulate the pressure inside the furnace body by controlling the gas flow rate.

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