A waste fan blade pyrolysis device and pyrolysis recovery system

Abstract

The utility model discloses a kind of waste fan blade pyrolysis device and pyrolysis recovery system, comprising: reactor furnace body and the pyrolysis chamber being arranged in the reactor furnace body;The pyrolysis chamber is fixed in reactor furnace body by support structure, and the bottom of pyrolysis chamber is equipped with multiple combustors, and each combustor is connected with natural gas inlet pipeline and air inlet pipeline respectively;The both ends of the reaction furnace body are equipped with automatic cut-off door respectively, for realizing the sealing of reaction furnace body;Track is provided in the pyrolysis chamber along length direction and is penetrated, for loading the load carrier of fan blade can move on track, and the position corresponding to automatic cut-off door of track is equipped with recess, to supply automatic cut-off door to close with track tight cooperation.The pyrolysis section of the utility model is intermittently transported by load carrier, reaction time can be controlled, guarantee fan blade pyrolysis completely;For blade that pyrolysis is not sufficient, load carrier can also be re-pyrolyzed.

Description

Technical Field

[0001] This utility model relates to the field of pyrolysis technology for waste wind turbine blades, and in particular to a pyrolysis device and pyrolysis recovery system for waste wind turbine blades. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] Wind turbine blades are important components of wind power generation. As their service life increases, tens of thousands of tons of retired blades and waste will be generated every year, and the number of retired blades will increase exponentially in the future. Therefore, there is an urgent need to develop efficient methods for the disposal and utilization of wind turbine blades.

[0004] Pyrolysis can completely decompose materials and has a high resource recovery rate, making it the most promising method. Pyrolysis of wind turbine blades can yield fiber products, tar, and pyrolysis exhaust gas. The fibers retain their surface morphology and certain mechanical properties, allowing for recycling.

[0005] Conventional pyrolysis treatment methods for wind turbine blades involve using traditional equipment such as fixed beds, kilns, and muffle furnaces to process large wind turbine blades. However, these devices require intermittent operation, have high energy consumption, and low processing efficiency. On the other hand, existing continuous processing equipment requires crushing large wind turbine blades into granules, which damages the fiber structure, reduces the quality of recycled fiber products, and makes it difficult to reuse them in wind turbine blade manufacturing. Utility Model Content

[0006] To address the aforementioned issues, this invention proposes a pyrolysis device and pyrolysis recycling system for waste wind turbine blades. By using a loading vehicle to separate wind turbine blades of different sizes, excessive cutting of the blades can be avoided, effectively solving the problem of severely broken waste wind turbine blades that render the fibers unusable.

[0007] In some implementations, the following technical solutions are adopted: A waste wind turbine blade pyrolysis device includes: a reactor furnace body and a pyrolysis chamber disposed within the reactor furnace body; the pyrolysis chamber is fixed within the reactor furnace body by a support structure, and multiple burners are provided at the bottom of the pyrolysis chamber, each burner being connected to a natural gas inlet pipe and an air inlet pipe respectively; automatic shut-off doors are provided at both ends of the reactor furnace body for sealing the reactor furnace body; a track runs through the pyrolysis chamber along its length, allowing a loading trolley for loading wind turbine blades to move on the track; grooves are provided on the track at positions corresponding to the automatic shut-off doors, so that the automatic shut-off doors can fit tightly with the track when closed.

[0008] As a further embodiment, the bottom of the pyrolysis chamber is an inclined structure, with the lower end connected to the pyrolysis oil storage tank via a pyrolysis oil outlet pipeline; the pyrolysis oil storage tank is connected to the burner via a pyrolysis oil circuit; and the pyrolysis gas outlet pipeline at the top of the pyrolysis chamber is connected to the burner via an exhaust gas treatment device and an induced draft fan.

[0009] As a further embodiment, the pyrolysis chamber is divided into multiple temperature zones along the length of the track, each zone having a different pyrolysis temperature; a pyrolysis chamber temperature detector is installed in each temperature zone.

[0010] As a further embodiment, the pyrolysis chamber is fixed to the reactor body by a plurality of spaced-apart support structures, and the track is also fixed to the pyrolysis chamber by the support structures. As a further solution, the automatic shut-off door consists of two automatic doors spaced apart. When the two automatic doors close, an inert gas can be filled between them to achieve a seal.

[0011] As a further embodiment, the material carrier has a frame structure with multiple loading spaces inside; the bottom of the material carrier and the bottom surface of each loading space are all configured with roller structures.

[0012] As a further solution, the space at the bottom of the material carrier is provided with multiple sets of reaction gas inlets. The reaction gas can be introduced into the reaction gas inlets through the reaction gas inlet pipe and pass through the fan blades on the material carrier from bottom to top.

[0013] In other embodiments, the following technical solutions are adopted: A waste wind turbine blade pyrolysis recycling system includes: a loading section, a pyrolysis section, and a cooling section arranged sequentially, wherein the pyrolysis section is the aforementioned waste wind turbine blade pyrolysis device; the loading section and the cooling section are also respectively provided with through tracks, which are connected to the track of the pyrolysis section as a whole; a material carrier for loading wind turbine blades can move along the tracks between the loading section, the pyrolysis section, and the cooling section.

[0014] As a further option, the automatic shut-off gates are respectively installed between the pyrolysis section and the filling section, and between the pyrolysis section and the cooling section.

[0015] As a further solution, the automatic shut-off gate between the pyrolysis section and the filling section is a double automatic gate, one of which is used to close one end of the pyrolysis section and the other is used to close one end of the filling section; after the two automatic shut-off gates are closed, inert gas can be filled between the two automatic gates to seal them. The automatic shut-off gate installed between the pyrolysis section and the cooling section consists of two automatic gates. One automatic gate is used to close one end of the pyrolysis section, and the other automatic gate is used to close one end of the cooling section. After the two automatic shut-off gates are closed, inert gas can be filled between the two automatic gates to seal them.

[0016] Compared with the prior art, the beneficial effects of this utility model are: (1) The waste wind turbine blade pyrolysis device of this utility model is an independent sealed structure. It adopts an automatic shut-off door to achieve mechanical sealing and injects inert gas (such as nitrogen) between the two shut-off doors to achieve gas sealing, thereby achieving a high degree of sealing of the pyrolysis section. The reaction gas is introduced from the bottom of the pyrolysis chamber and gradually diffuses upward, making more full contact with the wind turbine blades. The wind turbine blades can be in a static state during the pyrolysis and decarbonization process, ensuring the integrity of the fiber structure.

[0017] (2) The waste wind turbine blade pyrolysis recycling system of this utility model adopts a three-stage independent structure, which can sequentially realize the filling pyrolysis, fiber decarbonization and product cooling process of waste wind turbine blades; the reaction time can be controlled by intermittent conveying by the material carrier to ensure complete pyrolysis of wind turbine blades; blades that are not fully pyrolyzed can be re-pyrolyzed by the material carrier.

[0018] After the loading is completed, the loading car enters the pyrolysis section. After the pyrolysis reaction is completed, the loading car immediately enters the cooling section to cool down. At the same time, the subsequent loading cars enter the pyrolysis section again, realizing continuous production operation.

[0019] (3) This utility model realizes the filling and conveying of wind turbine blades through a material carrier, making the system more convenient to feed and discharge materials and increasing production efficiency; it avoids excessive cutting of blades and damage to the structure during the pyrolysis process, thus ensuring product quality.

[0020] Other features 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 this aspect. Attached Figure Description

[0021] Figure 1 This is a radial cross-sectional schematic diagram of the waste wind turbine blade pyrolysis device in an embodiment of this utility model; Figure 2 This is a schematic diagram of the waste wind turbine blade pyrolysis recycling system in an embodiment of this utility model; Figure 3 This is a schematic diagram of the front structure of a single material carrier in an embodiment of this utility model; Figure 4 This is a schematic diagram of the side structure of a single material carrier in an embodiment of this utility model; Among them, A1 is the filling section, A2 is the pyrolysis section, and A3 is the cooling section; 1. Automatic shut-off door; 2. Sealing structure; 3. Track; 4. Flexible seal; 5. Cargo trolley; 6. Reactor body; 7. Pyrolysis chamber; 8. Support structure; 8-1. Fixed support; 8-2. Expansion support; 9. Track support; 10. Track wheels; 11. Burner; 12. Furnace shell temperature detector; 13. Pyrolysis chamber temperature detector; 14. Pyrolysis chamber pressure detector; 15. Organic exhaust gas treatment device; 16. First induced draft fan; 17. Exhaust gas treatment device; 18. Second induced draft fan; 19. Cooling section exhaust gas pipeline; 20. Pyrolysis oil outlet pipeline; 21. Pyrolysis oil storage tank; 22. Pyrolysis oil circuit; 23. Reaction gas inlet pipeline; 24. Reaction gas inlet; 25. Cooling air inlet; 26. Roller. Detailed Implementation

[0022] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] Example 1 In one or more embodiments, a pyrolysis device for waste wind turbine blades is disclosed, combined with Figure 1 Specifically, it includes: a reactor furnace body 6 and a pyrolysis chamber 7 installed inside the reactor furnace body; the pyrolysis chamber is fixed inside the reactor furnace body 6 by a support structure 8, and multiple burners 11 are provided at the bottom of the pyrolysis chamber, each burner being connected to a natural gas inlet pipe and an air inlet pipe respectively; automatic shut-off doors 1 are provided at both ends of the reactor furnace body to achieve sealing of the reactor furnace body; a track 3 is provided running through the pyrolysis chamber along its length, allowing a loading trolley for filling fan blades to move on the track, and grooves are provided at positions corresponding to the automatic shut-off doors to ensure tight fit between the automatic shut-off doors and the track when closed.

[0025] In a specific implementation, the loading vehicle 5, filled with fan blades, can enter the pyrolysis chamber along the track 3. The pyrolysis chamber is fixed to the reactor furnace body by multiple spaced support structures 8. The track is fixed to the bottom of the pyrolysis chamber and is also installed through the pyrolysis chamber by these support structures. Multiple burners are provided at the bottom of the pyrolysis chamber. The burners are devices that generate heat by burning gas or oil. Each burner is connected to the natural gas intake pipeline and the air intake pipeline respectively. Based on the different pyrolysis temperatures of different fan blades, the pyrolysis chamber is divided into multiple temperature zones along the length of the track, and each temperature zone has a different pyrolysis temperature. A pyrolysis chamber temperature detector 13 is set in each temperature zone to collect the pyrolysis chamber temperature of each temperature zone and feed the temperature back to the proportional controller, thereby controlling the opening of the automatic valves in the natural gas intake pipeline and the air intake pipeline to control the combustion temperature of the burners in different temperature zones, realize regional temperature control, improve energy utilization, and avoid energy waste.

[0026] The pyrolysis chamber can be heated by pyrolysis gas, pyrolysis oil, gasoline or diesel, combustible gas or waste heat recovery, etc. It is equipped with multiple burners, and more burners can be added according to the pyrolysis effect of the product. The combustion exhaust gas is treated and discharged in compliance with standards.

[0027] It should be noted that the support structure in this embodiment includes a fixed support 8-1 and an expansion support 8-2. Specifically, the expansion support 8-2 is provided with a roller on the fixed support. When the bottom of the pyrolysis chamber expands due to heat, the roller can act as a movable expansion support. As a specific example, the support at the far right of the pyrolysis chamber is a fixed support, and the remaining supports are expansion supports. A flexible seal 4 is reserved between the edge of the end face of the pyrolysis chamber and the reactor body. The flexible seal 4 is filled with high-temperature resistant flexible filler. The track is close to the bottom of the pyrolysis chamber. When both are heated and expand, they will press the high-temperature resistant flexible filler between the pyrolysis chamber and the reactor body to form a highly sealed environment.

[0028] The bottom of the pyrolysis chamber is inclined, and the lower end of the inclined structure is connected to the pyrolysis oil storage tank 21 through the pyrolysis oil outlet pipeline 20. The pyrolysis oil storage tank 21 is connected to the burner 11 through the pyrolysis oil circuit 22. The pyrolysis gas outlet pipeline at the top of the pyrolysis chamber is connected to the burner through the organic tail gas treatment device 15 and the first induced draft fan 16. The top of the reactor furnace body is provided with a tail gas outlet. After the combustion tail gas is discharged through the tail gas outlet, it is treated by the tail gas treatment device 17 and then discharged by the second induced draft fan 18 after meeting the standards.

[0029] Multiple sets of reaction gas inlets are provided in the space at the bottom of the pyrolysis chamber's loading vehicle. The reaction gas is introduced into the reaction gas inlet 24 through the reaction gas inlet pipe 23. The reaction gas can pass through the fan blades on the loading vehicle from bottom to top, so that the reaction gas can fully and evenly contact the fan blades in the loading vehicle.

[0030] In this embodiment, the automatic shut-off door consists of two automatic doors spaced apart. When both automatic doors are closed, an inert gas, such as nitrogen, can be filled between them. After the nitrogen is injected, a slightly positive pressure environment can be formed in the pyrolysis section, thereby preventing external air from seeping in and achieving a gas seal.

[0031] It should be noted that the automatic door uses conventional structural choices for automatic opening and closing control and inert gas injection. For example, automatic doors can be opened and closed using electric control. The main purpose of setting up the automatic shut-off door in this embodiment is to achieve mechanical sealing and gas sealing of the reactor furnace body, preventing outside air from entering the pyrolysis chamber during pyrolysis and decarbonization, which would affect the reaction effect.

[0032] In this embodiment, combined with Figure 3 and Figure 4 The loading cart 5 has an open frame structure, with no obstructions on four sides or at both ends, facilitating the placement of the blower blades. The loading cart can be configured as a single, integrated body structure of a set length, with multiple loading spaces inside. Each loading space can hold blower blades of different sizes. The bottom of the loading cart and the ground of each loading space are equipped with multiple rollers 26, facilitating the loading of large blower blades and the discharge of products. The rollers are spaced at a set distance, providing a reliable channel for the entry of reaction gases and the discharge of pyrolysis oil. This solves problems such as uneven heating of the blower blades, insufficient contact between the reaction gases and the blower blades, difficulty in the discharge of pyrolysis oil, and structural damage due to blade stacking, resulting in a more complete reaction, ensuring the integrity of the fiber structure after decarbonization, and improving the quality of the recovered fibers.

[0033] Of course, multiple material carriers can also be connected in sequence according to actual needs, so the length of the material carriers can be flexibly adjusted according to actual needs.

[0034] This embodiment, through the combination of a material carrier and a track, can avoid excessive cutting of the wind turbine blades, effectively solving the problem that the fibers cannot be reused due to severe breakage of waste wind turbine blades.

[0035] In this embodiment, the wind turbine blades undergo two processes—pyrolysis and decarbonization—within the waste wind turbine blade pyrolysis device, as detailed below: Pyrolysis process: After the loading vehicle enters the pyrolysis unit, two automatic doors automatically close, and nitrogen gas is injected between the two automatic doors to achieve gas sealing.

[0036] At the beginning of pyrolysis, natural gas is introduced through a valve at the front end of the pyrolysis oil storage tank, enters the burner through the pyrolysis oil circuit, and air enters the burner through the exhaust gas pipeline. Multiple burners are arranged at the bottom of the pyrolysis chamber. A furnace shell temperature detector 12 is installed inside the reactor furnace to monitor and provide feedback on the temperature inside the furnace in real time. A pyrolysis chamber temperature detector 13 and a pyrolysis chamber pressure detector 14 are installed inside the pyrolysis chamber to monitor and provide feedback on the temperature and pressure inside the pyrolysis chamber in real time, thereby determining whether the temperature and pressure meet the requirements.

[0037] As the temperature in the pyrolysis chamber rises, the fan blades in the loading vehicle decompose to produce pyrolysis oil and pyrolysis gas. The bottom of the pyrolysis chamber is designed with an inclined structure, allowing the pyrolysis oil to naturally drain from the pyrolysis oil outlet pipe 20 into the pyrolysis oil storage tank 21, and then enter the burner 11 for re-combustion via the pyrolysis oil circuit 22 to provide heat energy for the system. The pyrolysis gas contains a large amount of organic components, which are treated by the organic exhaust gas treatment device before being re-entered into the burner by the induced draft fan to generate heat for pyrolysis. Once the system stabilizes, the heat generated by the re-combustion of the pyrolysis oil and pyrolysis gas produced by the fan blade pyrolysis is sufficient to meet the system's needs, eliminating the need for natural gas and achieving thermal self-sufficiency, thus improving energy utilization. The continuous heating of the bottom of the pyrolysis chamber prevents the condensation of the pyrolysis oil.

[0038] Decarbonization process: After the pyrolysis process is completed, the resin in the fan blades decomposes into pyrolysis oil and pyrolysis gas, leaving carbon powder in the fiber gaps and on the surface. This carbon powder can be removed by introducing reaction gas. During the decarbonization process, nitrogen is stopped being introduced between the automatic shut-off doors, and then oxygen is slowly introduced into the pyrolysis chamber until the space is filled. The concentration of reaction gas is highest at the bottom of the pyrolysis chamber and gradually diffuses upwards, allowing for full contact and reaction with the fan blades. The pyrolysis and decarbonization process of the fan blades is in a static state, ensuring the integrity of the fiber structure.

[0039] In this embodiment, the reaction gas is oxygen. Multiple sets of reaction gas inlets are set at the lower end of the material carrier to make the reaction gas distribution more uniform and to make it more fully contacted with the fan blades in the material carrier, thereby shortening the decarbonization reaction time.

[0040] Example 2 In one or more embodiments, a waste wind turbine blade pyrolysis recycling system is disclosed, combined with Figure 2 Specifically, it includes: a loading section A1, a pyrolysis section A2, and a cooling section A3 arranged in sequence, wherein the pyrolysis section A2 is the waste wind turbine blade pyrolysis device described in Example 1; the loading section A1 and the cooling section A3 are also respectively provided with through tracks, which are connected to the tracks of the pyrolysis section as a whole; the material carrier used for loading wind turbine blades can move along the tracks between the loading section, the pyrolysis section, and the cooling section.

[0041] After the waste wind turbine blades are loaded onto the loading vehicle in the loading section A1, they enter the pyrolysis section A2 along the track for pyrolysis and decarbonization. After pyrolysis and decarbonization are completed, the automatic shut-off gate opens, and the loading vehicle enters the cooling section A3 along the track for cooling, ultimately obtaining high-quality fiber products.

[0042] Specifically, automatic shut-off doors are installed between the pyrolysis section and the filling section, as well as between the pyrolysis section and the cooling section, to achieve sealing of the pyrolysis section.

[0043] The automatic shut-off door between the pyrolysis section and the filling section consists of two automatic doors. One automatic door is used to close one end of the pyrolysis section, and the other automatic door is used to close one end of the filling section. After the two automatic shut-off doors are closed, inert gas can be filled between the two automatic doors to seal them. Similarly, the automatic shut-off gate set between the pyrolysis section and the cooling section consists of two automatic gates. One automatic gate is used to close one end of the pyrolysis section, and the other automatic gate is used to close one end of the cooling section. After the two automatic shut-off gates are closed, inert gas can be filled between the two automatic gates to seal them.

[0044] On the side wall of each automatic door that contacts the corresponding work section, a sealing structure 2 is provided. This sealing element is made of materials such as high-temperature resistant fiber or flexible graphite to ensure a good seal. After the two automatic doors are closed, an inert gas, such as nitrogen, is filled between them. The injection of nitrogen creates a slightly positive pressure environment in the pyrolysis chamber, thereby preventing external air from seeping in.

[0045] As a specific example, grooves are provided on the tracks between the filling section and the pyrolysis section, and on the tracks between the pyrolysis section and the cooling section, at positions corresponding to the automatic cutting doors, so that the automatic cutting doors can fit tightly with the tracks when closed to ensure a sealing effect; at the same time, the size of the grooves is smaller than the diameter of the track wheels 10 on the material carrier, so that the material carrier can pass smoothly through the groove positions, ensuring that the material carrier can stably enter the pyrolysis section and the cooling section from the filling section.

[0046] After cutting, the blowers are loaded onto material carriers in the loading section. After loading, the material carriers move the blowers to the pyrolysis section for pyrolysis and decarbonization. At the same time, the loading section loads the next batch of material carriers. The blower blades undergo pyrolysis and decarbonization in the pyrolysis section. After the reaction is completed, the material carriers move the blades to the cooling section for cooling. At the same time, the next batch of material carriers that have finished loading enters the pyrolysis section to achieve continuous operation. During the operation, the reactor furnace does not cool down, so that the heat of the pyrolysis section is fully utilized, avoiding the energy consumption problems caused by heating and cooling, saving reaction time, improving production efficiency, and enabling large-scale processing of waste blower blades. In this embodiment, the filling section includes a filling chamber and a track installed inside the chamber. Track supports 9 pairs of rails for fixation and support, ensuring the track height is aligned with the height of the pyrolysis section. In the filling section, waste blower blades can be loaded into the independent compartments of the material carriers using manual or mechanical feeding methods. The screen-like bottom plate inside the compartment can be removed for easy loading. After each material carrier is full, it stops on the track in the filling section. Once the previous batch of material has undergone pyrolysis and decarbonization, the automatic shut-off gates at the pyrolysis section inlet and filling section outlet open, allowing the material carriers in the filling section to enter the pyrolysis section under thrust.

[0047] After the pyrolysis section is completed, the automatic doors at both ends of the pyrolysis section open, and the material-carrying cars of the pyrolysis section enter the cooling section by pulling or pushing. The automatic door between the pyrolysis section and the cooling section closes. Then, the material-carrying cars of the filling section enter the pyrolysis section, and the automatic door between the filling section and the pyrolysis section closes, and the pyrolysis process is carried out again.

[0048] In this embodiment, the fiber products in different loading vehicles can be tested for quality, and the products that meet the requirements can be recycled. Products that are not sufficiently pyrolyzed or decarbonized can be subjected to secondary pyrolysis or decarbonization reactions to ensure the quality of fiber products.

[0049] In this embodiment, the bottom of the cooling section is provided with multiple cooling air inlets 25, and the top of the cooling section is provided with an exhaust gas outlet. The exhaust gas outlet pipeline is connected in sequence to the exhaust gas treatment device and the exhaust fan. The exhaust gas pipeline of the cooling section can be connected to the pyrolysis section as the air supply for the burner.

[0050] The cooling section also has track supports at its bottom to support the track running through it and to ensure that the track is at the same height as the track in the pyrolysis section. The track support structure of the cooling section can be the same as that of the pyrolysis section, using a combination of fixed supports and expansion supports; the specific structure will not be described in detail here.

[0051] In this embodiment, the cooling section adopts air-cooled cooling, with the cooling air in direct contact with the material, which can improve the cooling speed and achieve a significant cooling effect. After the material car enters the cooling zone, the cooling air is introduced through multiple cooling air inlets under the track. After the cooling air exchanges heat with the product in the material car, the exhaust gas of the cooling section is treated by the exhaust gas treatment device, and then enters the burner for reuse after passing through the induced draft fan.

[0052] This embodiment of the waste wind turbine blade pyrolysis recycling system adopts a three-stage independent structure, which can sequentially realize the processes of loading and pyrolysis, fiber decarburization, and product cooling of waste wind turbine blades. Intermittent transport by a material carrier allows for control of the reaction time, ensuring complete pyrolysis of the wind turbine blades. Blades with insufficient pyrolysis can be re-pyrolyzed using the material carrier. After loading, the material carrier enters the pyrolysis section. After the pyrolysis reaction is completed, the material carrier immediately enters the cooling section for cooling, while subsequent material carriers re-enter the pyrolysis section, achieving continuous production operation.

[0053] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A pyrolysis device for waste wind turbine blades, characterized in that, It includes: a reactor furnace body and a pyrolysis chamber disposed within the reactor furnace body; the pyrolysis chamber is fixed within the reactor furnace body by a support structure, and multiple burners are provided at the bottom of the pyrolysis chamber, each burner being connected to a natural gas inlet pipe and an air inlet pipe respectively; automatic shut-off doors are provided at both ends of the reactor furnace body to achieve sealing of the reactor furnace body; a track runs through the pyrolysis chamber along its length, allowing a loading trolley for filling fan blades to move on the track, and grooves are provided at positions corresponding to the automatic shut-off doors to ensure a tight fit between the automatic shut-off doors and the track when closed.

2. The waste wind turbine blade pyrolysis device as described in claim 1, characterized in that, The bottom of the pyrolysis chamber is inclined, and the lower end of the bottom is connected to the pyrolysis oil storage tank through the pyrolysis oil outlet pipeline; the pyrolysis oil storage tank is connected to the burner through the pyrolysis oil circuit; the pyrolysis gas outlet pipeline at the top of the pyrolysis chamber is connected to the burner through the exhaust gas treatment device and then through the induced draft fan.

3. The waste wind turbine blade pyrolysis device as described in claim 1, characterized in that, The pyrolysis chamber is divided into multiple temperature zones along the length of the track, each with a different pyrolysis temperature; a pyrolysis chamber temperature detector is installed in each temperature zone.

4. The waste wind turbine blade pyrolysis device as described in claim 1, characterized in that, The pyrolysis chamber is fixed inside the reactor furnace by multiple spaced-apart support structures, and the track is also fixed inside the pyrolysis chamber by the support structures.

5. The waste wind turbine blade pyrolysis device as described in claim 1, characterized in that, The automatic shut-off door consists of two automatic doors spaced apart. When the two automatic doors close, inert gas can be filled between them to achieve a seal.

6. The waste wind turbine blade pyrolysis device as described in claim 1, characterized in that, The material carrier has a frame structure and is divided into multiple filling spaces; the bottom of the material carrier and the bottom surface of each filling space are set as roller structures.

7. The waste wind turbine blade pyrolysis device as described in claim 6, characterized in that, The space at the bottom of the material carrier is equipped with multiple sets of reaction gas inlets. The reaction gas can be introduced into the reaction gas inlets through the reaction gas inlet pipe and pass through the fan blades on the material carrier from bottom to top.

8. A pyrolysis recycling system for waste wind turbine blades, characterized in that, include: The device comprises a loading section, a pyrolysis section, and a cooling section arranged sequentially. The pyrolysis section is the waste wind turbine blade pyrolysis device as described in any one of claims 1-7. The loading section and the cooling section are also provided with through tracks, which are connected to the tracks of the pyrolysis section. The material carrier for loading wind turbine blades can move along the tracks between the loading section, the pyrolysis section, and the cooling section.

9. The waste wind turbine blade pyrolysis recycling system as described in claim 8, characterized in that, The automatic shut-off doors are respectively installed between the pyrolysis section and the filling section, and between the pyrolysis section and the cooling section.

10. The waste wind turbine blade pyrolysis recycling system as described in claim 9, characterized in that, The automatic shut-off gate between the pyrolysis section and the filling section consists of two automatic gates. One automatic gate is used to close one end of the pyrolysis section, and the other automatic gate is used to close one end of the filling section. After the two automatic shut-off gates are closed, inert gas can be filled between the two automatic gates to seal them. The automatic shut-off gate installed between the pyrolysis section and the cooling section consists of two automatic gates. One automatic gate is used to close one end of the pyrolysis section, and the other automatic gate is used to close one end of the cooling section. After the two automatic shut-off gates are closed, inert gas can be filled between the two automatic gates to seal them.

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