Retired wind power blade gasification system and method based on weightlessness monitoring

Abstract

The invention relates to the technical field of solid waste treatment, and provides an ex-service wind power blade gasification system and method.The gasification system comprises a pyrolysis unit, the pyrolysis unit comprises a first gas phase outlet, a first solid phase outlet and a solid phase inlet, and an ex-service wind power blade enters the pyrolysis unit through the solid phase inlet; pyrolysis gas, pyrolysis residues and glass fiber waste residues are generated through pyrolysis treatment, and the pyrolysis gas is discharged through a first gas phase outlet; the control unit is used for monitoring the weight loss ratio of the retired wind power blade and changing the horizontal inclination angle of the pyrolysis unit when the weight loss ratio reaches a preset value; the gasification unit is communicated with the first solid phase outlet, and the pyrolysis residues enter the gasification unit through the first solid phase outlet and are gasified to generate synthesis gas and gasified residues. According to the method, the time for the pyrolysis residues to enter the gasification unit is controlled through the weight loss ratio, real-time monitoring and judgment of the reaction process are achieved, incomplete pyrolysis or excessive pyrolysis is avoided, and the gasification efficiency and stability are improved.

Description

Technical Field

[0001] This application relates to the field of solid waste treatment technology, and in particular to a gasification system and method for decommissioned wind turbine blades based on weightlessness monitoring. Background Technology

[0002] With the rapid development of the wind power industry, a large number of wind turbine blades that have reached the end of their service life are entering the decommissioning stage. Wind turbine blades are mainly composed of composite materials such as glass fiber reinforced skeletons and resin matrices, which have the characteristics of high strength, corrosion resistance, and non-degradability. Traditional disposal methods such as landfill or direct incineration not only occupy land resources, but may also release harmful gases, causing secondary pollution, and cannot achieve effective material recycling, which does not meet the requirements of green and sustainable development.

[0003] Thermochemical treatment technologies (such as pyrolysis and gasification) decompose polymers through chemical reactions. Heating under an oxygen-free or inert atmosphere breaks down organic resins into volatile gases, tar, and solid carbon residues, thereby separating them from inorganic glass fibers. Glass fibers recovered through thermochemical treatment have clean surfaces and high performance retention, possessing the potential for reuse in composite materials. Simultaneously, pyrolysis byproducts can be used as energy or chemical raw materials. Currently, thermochemical treatment technology is an important approach to realizing the resource utilization of wind turbine blades.

[0004] However, the residence time and conveying rhythm of materials in the pyrolysis process rely on experience-based settings, lacking real-time monitoring and judgment of the reaction process. Due to fluctuations in the composition, size, and moisture content of the feed blades, fixed process parameters can easily lead to incomplete or excessive pyrolysis. Incomplete pyrolysis results in resin residue and poor glass fiber recycling quality, while excessive pyrolysis leads to energy waste and may damage the strength of the glass fiber. Summary of the Invention

[0005] To address the aforementioned problems in the existing technology, this application provides a gasification system and method for decommissioned wind turbine blades based on weightlessness monitoring. The technical problem to be solved by this application is achieved through the following technical solution: In a first aspect, this application provides a decommissioned wind turbine blade gasification system based on weightlessness monitoring, comprising: The pyrolysis unit includes a first gas phase outlet, a first solid phase outlet, and a solid phase inlet. Decommissioned wind turbine blades enter the pyrolysis unit through the solid phase inlet and undergo pyrolysis to generate pyrolysis gas, pyrolysis residue, and fiberglass waste. The pyrolysis gas is discharged through the first gas phase outlet. The control unit is used to monitor the weight loss rate of retired wind turbine blades and change the horizontal tilt angle of the pyrolysis unit when the weight loss rate reaches a preset value. The screening device, located inside the pyrolysis unit, is used to separate pyrolysis residue and glass fiber waste. The glass fiber waste is discharged through the solid phase inlet. The gasification unit is connected to the first solid phase outlet. The pyrolysis residue enters the gasification unit through the first solid phase outlet and is gasified to generate syngas and gasification residue. The gasification unit has a second gas phase outlet for discharging syngas and a second solid phase outlet for discharging gasification residue. The tar recovery unit is connected to the second gas phase outlet.

[0006] In one feasible implementation, the control unit includes: A weight monitoring device is installed at the bottom of the pyrolysis unit to monitor the weight of the pyrolysis unit and calculate the weight loss rate of the decommissioned wind turbine blades. When the weight loss rate reaches a preset value, an adjustment signal is sent. The preset value is determined based on the mass percentage of the resin component in the decommissioned wind turbine blades. The regulating device, electrically connected to the weight monitoring device, is used to change the horizontal tilt angle of the pyrolysis unit according to the regulating signal, so that the pyrolysis residue can enter the gasification unit.

[0007] In one feasible embodiment, the control unit is also used to change the horizontal tilt angle of the pyrolysis unit after the pyrolysis residue enters the gasification unit, so that the glass fiber waste is discharged from the solid phase inlet.

[0008] One feasible approach also includes: The feeding unit, connected to the solid phase inlet of the pyrolysis unit, is used to transport decommissioned wind turbine blades to the pyrolysis unit.

[0009] In one feasible manner, the pyrolysis unit includes: a rotary kiln; The top of the rotary kiln is the first gas phase outlet, the starting point of the rotary kiln in the horizontal direction is the solid phase inlet of the pyrolysis unit, and the ending point of the rotary kiln in the horizontal direction is the first solid phase outlet.

[0010] In one feasible approach, the regulating device includes: The lifting mechanism, with its movable end connected to one end of the bottom of the rotary kiln, is used to change the height of one end of the rotary kiln, thereby changing the horizontal tilt angle of the rotary kiln.

[0011] In one feasible embodiment, the lifting mechanism includes one of a hydraulic lifting mechanism, an electric push rod mechanism, and a screw lifting mechanism; the horizontal tilt angle adjustment range of the rotary kiln is -10° to 10°.

[0012] In one feasible approach, the default value is 25%~35%; The screening device includes a mesh screen with an aperture of 4-6 mm.

[0013] In one feasible approach, the tar recovery unit includes: A tar separation unit, connected to a second gas phase outlet, is used to separate tar from syngas; A tar combustion device, connected to a tar separation device and a pyrolysis unit, is used to burn tar and transfer the combustion heat to the pyrolysis unit.

[0014] Secondly, this application provides a method for gasifying decommissioned wind turbine blades based on weightlessness monitoring, which is carried out using the decommissioned wind turbine blade gasification system based on weightlessness monitoring provided in the first aspect of this application, and includes the following steps: Decommissioned wind turbine blades are sent to a pyrolysis unit for pyrolysis treatment to generate pyrolysis gas, pyrolysis residue and fiberglass waste. The pyrolysis unit includes a first gas phase outlet, a first solid phase outlet and a solid phase inlet. The pyrolysis gas is discharged through the first gas phase outlet. The weight loss rate of decommissioned wind turbine blades is monitored through the control unit; When the weight loss rate reaches the preset value, the horizontal tilt angle of the pyrolysis unit is changed, so that the pyrolysis residue and glass fiber waste move towards the first solid phase outlet. The pyrolysis residue and glass fiber waste are separated by a residual carbon screening device, so that the pyrolysis residue enters the gasification unit. The pyrolysis residue is gasified through a gasification unit to generate syngas and gasification residue. Tar is recovered from syngas through a tar recovery unit.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: The decommissioned wind turbine blade gasification system based on weight loss monitoring provided in this application realizes continuous and graded gasification of decommissioned wind turbine blades through a pyrolysis unit and a gasification unit. The pyrolysis reaction process is determined by monitoring the weight loss rate of the decommissioned wind turbine blades, and the time when the pyrolysis residue enters the gasification unit is controlled according to the weight loss rate. This enables real-time judgment of the reaction process, avoids incomplete or excessive pyrolysis, and improves gasification efficiency and stability. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 A process flow diagram of a decommissioned wind turbine blade gasification system based on weightlessness monitoring, according to an embodiment of this application, is shown. Figure 2 This paper shows a schematic diagram of the structure of a decommissioned wind turbine blade gasification system based on weightlessness monitoring, according to an embodiment of this application. Figure 3 The diagram illustrates the steps of a decommissioned wind turbine blade gasification method based on weightlessness monitoring, according to an embodiment of this application.

[0017] Figure label: 1: Feeding hopper; 2: Screw feeder; 3: Rotary furnace; 4: Mesh screen; 5: Flue gas treatment system; 6: Weight sensor; 7: Lifting mechanism; 8: Gasifier; 9: Tar separation device; 10: Tar combustion device. Detailed Implementation

[0018] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Unless otherwise specified, the following embodiments and features can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0019] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] Please see Figure 1 and Figure 2 , Figure 1 This application illustrates a process flow diagram of a decommissioned wind turbine blade gasification system based on weightlessness monitoring, according to an embodiment of this application. Figure 2 A schematic diagram of a decommissioned wind turbine blade gasification system based on weightlessness monitoring, according to an embodiment of this application, is shown.

[0021] This application provides a decommissioned wind turbine blade gasification system based on weight loss monitoring, comprising: a pyrolysis unit, which includes a first gas phase outlet, a first solid phase outlet, and a solid phase inlet. The decommissioned wind turbine blade enters the pyrolysis unit through the solid phase inlet and undergoes pyrolysis to generate pyrolysis gas, pyrolysis residue, and fiberglass waste. The pyrolysis gas is discharged through the first gas phase outlet. A control unit is used to monitor the weight loss rate of the decommissioned wind turbine blade and change the horizontal tilt angle of the pyrolysis unit when the weight loss rate reaches a preset value. A screening device is installed in the pyrolysis unit to separate the pyrolysis residue and fiberglass waste. The fiberglass waste is discharged through the solid phase inlet. A gasification unit is connected to the first solid phase outlet. The pyrolysis residue enters the gasification unit through the first solid phase outlet and undergoes gasification to generate syngas and gasification residue. The gasification unit has a second gas phase outlet for discharging syngas and a second solid phase outlet for discharging gasification residue. A tar recovery unit is connected to the second gas phase outlet.

[0022] Specifically, retired wind turbine blades enter the pyrolysis unit through the solid phase inlet. Under heating conditions, the resin component and glass fiber component in the retired wind turbine blades separate. The glass fiber component forms large-sized glass fiber waste residue, while the resin component undergoes pyrolysis and volatilization. The volatilized components form pyrolysis gas, which is discharged from the pyrolysis unit through the first gas phase outlet. The remaining skeleton of the resin component after pyrolysis forms small-particle pyrolysis residue. Because the pyrolysis gas generated by pyrolysis is continuously discharged from the first gas phase outlet, the control unit can monitor the weight change of the pyrolysis unit, thereby obtaining the weight loss rate of the decommissioned wind turbine blades. Based on the weight loss rate of the decommissioned wind turbine blades, the pyrolysis reaction process can be monitored. When the pyrolysis reaction is complete, by controlling the horizontal inclination angle of the pyrolysis unit, the fiberglass waste and pyrolysis residue move towards the first solid phase outlet. Under the action of the screening device, the fiberglass waste remains in the pyrolysis unit and is subsequently discharged through the solid phase inlet. The pyrolysis residue, after passing through the screening device, enters the gasification unit, thus achieving precise control of the pyrolysis degree, avoiding incomplete or excessive pyrolysis, and improving gasification efficiency and stability. The pyrolysis residue obtained from the pyrolysis unit enters the gasification unit and undergoes a gasification reaction under controlled or enriched oxygen conditions, generating gasification products such as CO, H2, and CH4, i.e., syngas, which is discharged from the second gas phase outlet. The gasification residue is discharged from the system through the second solid phase outlet. The gasification residue can be reintroduced into the system for secondary gasification treatment to improve carbon conversion rate. The tar recovery unit is connected to the second gas phase outlet, separates tar from the syngas, and recovers and utilizes the heat generated by tar combustion.

[0023] In this embodiment, the decommissioned wind turbine blade gasification system further includes a feeding unit. The feeding unit is connected to the solid phase inlet of the pyrolysis unit and is used to transport the decommissioned wind turbine blade to the pyrolysis unit.

[0024] In this embodiment, the control unit includes a weight monitoring device and an adjustment device. The weight monitoring device is located at the bottom of the pyrolysis unit and is used to monitor the weight of the pyrolysis unit and calculate the weight loss rate of the decommissioned wind turbine blades. When the weight loss rate reaches a preset value, it sends an adjustment signal; wherein the preset value is determined based on the mass percentage of resin components in the decommissioned wind turbine blades. The adjustment device is electrically connected to the weight monitoring device and is used to change the horizontal tilt angle of the pyrolysis unit according to the adjustment signal, so that the pyrolysis residue enters the gasification unit.

[0025] Furthermore, the control unit is also used to change the horizontal tilt angle of the pyrolysis unit after the pyrolysis residue enters the gasification unit, so that the glass fiber waste is discharged from the solid phase inlet.

[0026] Specifically, the weight loss rate of retired wind turbine blades obtained from the weight monitoring equipment enables real-time monitoring of the pyrolysis degree of the blades, avoiding incomplete or excessive pyrolysis and improving gasification efficiency and stability. When the weight loss rate reaches a preset value, it indicates complete pyrolysis of the retired wind turbine blades. At this point, the adjusting equipment changes the horizontal inclination angle of the pyrolysis unit, making the height of the solid phase inlet higher than the height of the first solid phase outlet. Pyrolysis residue and fiberglass waste are conveyed towards the first solid phase outlet under gravity. Under the action of the screening device, the fiberglass waste remains in the pyrolysis unit, while the pyrolysis residue enters the gasification unit after passing through the screening device. After the pyrolysis residue enters the gasification unit, the adjusting equipment again changes the horizontal inclination angle of the pyrolysis unit, making the height of the solid phase inlet lower than the height of the first solid phase outlet. The fiberglass waste remaining in the pyrolysis unit is conveyed towards the solid phase inlet under gravity, thus discharging the fiberglass waste.

[0027] In this embodiment, as Figure 2 As shown, the feeding unit includes a feeding hopper 1 and a screw feeder 2; the pyrolysis unit includes a rotary kiln 3, with the top of the rotary kiln 3 serving as the first gas phase outlet, the starting point of the rotary kiln 3 along the horizontal direction serving as the solid phase inlet of the pyrolysis unit, and the ending point of the rotary kiln 3 along the horizontal direction serving as the first solid phase outlet; the screening device includes a screen 4; the weight monitoring device includes a weight sensor 6 and a data processing module; the adjustment device includes a lifting mechanism 7; the gasification unit includes a gasifier 8, with the top of the gasifier 8 serving as the second gas phase outlet and the bottom serving as the second solid phase outlet; and the tar recovery unit includes a tar separation device 9 and a tar combustion device 10. The feeding hopper 1 is used to feed decommissioned wind turbine blades. The screw feeder 2 is connected to the outlet end of the feeding hopper 1 and the starting end of the rotary kiln 3. The screen 4 is set inside the rotary kiln 3 near the outlet end. The weight sensor 6 is installed on the support structure of the rotary kiln 3. The movable end of the lifting mechanism 7 is connected to the support of the rotary kiln 3. The end end of the rotary kiln 3 is connected to the inlet of the gasifier 8. The tar separation device 9 is connected to the second gas phase outlet of the gasification unit and is used to separate tar from the syngas. The tar combustion device 10 is connected to the tar separation device and the pyrolysis unit and is used to burn tar and transfer the combustion heat to the pyrolysis unit.

[0028] Specifically, retired wind turbine blades enter the screw feeder 2 through the feeding hopper 1 and are fed into the rotary kiln 3 for pyrolysis. The pyrolysis gas is discharged from the first gas phase outlet to the flue gas treatment system 5. The weight sensor 6 collects the total weight of the rotary kiln 3 in real time and sends the weight data to the data processing module. The data processing module calculates the weight loss rate of the retired wind turbine blades based on the weight data at different times and sends an adjustment signal when the weight loss rate reaches a preset value. Upon receiving the adjustment signal, the lifting mechanism 7 raises or lowers one end of the rotary kiln 3 to adjust the horizontal tilt angle of the rotary kiln 3, thereby changing the direction of material transport within the rotary kiln 3. The gasifier 8 is a fixed-bed gasifier or a fluidized-bed gasifier, with oxygen and steam entering through the gas inlet at the bottom of the furnace to control the reaction environment inside.

[0029] Furthermore, the horizontal tilt angle adjustment range of the rotary kiln is -10° to 10°. The preset value is 25% to 35%, and the screening device includes a mesh screen 4 with an aperture of 4 to 6 mm. The gasifier 8 is equipped with a temperature control device for maintaining the reaction temperature and a gas collection device for discharging the syngas. Optionally, the temperature control device includes a thermocouple and a heating element, and the gas collection device includes a gas collection hood and pipes.

[0030] In one feasible approach, to improve the efficiency of the pyrolysis reaction, the decommissioned wind turbine blades are crushed before being fed into the system. The rotary kiln 3 is equipped with a stirring device to promote uniform heating and mixing of materials of different particle sizes, preventing agglomeration. Optionally, the stirring device includes spiral blades or a lifting plate. The weight sensor 6 is a weighing module or a weighing scale, and the data processing module is a programmable logic controller (PLC) or an embedded controller. For example, the resin component content in the decommissioned wind turbine blade is 35%, the temperature of the rotary kiln 3 is 500°C, and the preset value is 30%. When the weight loss rate of the decommissioned wind turbine blade reaches 30% and the weight data tends to stabilize, it indicates that the pyrolysis reaction is complete. At this time, the data processing module sends an adjustment signal to the lifting mechanism 7, causing the pyrolysis residue to enter the gasifier 8.

[0031] In this embodiment, the lifting mechanism includes one of a hydraulic lifting mechanism, an electric push rod mechanism, and a screw lifting mechanism. The lifting mechanism is located at the bottom of the starting point of the rotary kiln 3. The movable end of the lifting mechanism is connected to the support of the rotary kiln 3, allowing the rotary kiln 3 to adjust its horizontal tilt within a range of ±10° in the horizontal direction. When the movable end of the lifting mechanism rises, the starting point of the rotary kiln 3 is lifted, allowing the pyrolysis residue to enter the gasifier 8. When the movable end of the lifting mechanism descends, the starting point of the rotary kiln 3 descends, allowing the fiberglass waste to be discharged from the starting point of the rotary kiln 3, achieving physical separation of the fiberglass waste and the pyrolysis residue, and improving the resource recovery rate.

[0032] In one feasible embodiment, the tar separation device 9 includes a condenser and a filter. The condenser is used to cool and condense the tar in the syngas, and the filter is used to separate the condensed tar from the syngas. Optionally, the filter is a ceramic filter or a fiber filter. The tar combustion device 10 is provided with a combustion chamber for high-temperature combustion of the separated liquid or solid tar. Optionally, the heat from the high-temperature flue gas generated by the tar combustion device 10 is recovered through a heat exchanger to generate hot air or hot water, which is then delivered to the pyrolysis unit as an auxiliary heat source, achieving closed-loop energy utilization.

[0033] In another feasible embodiment, the tar separation unit 9 includes an electrostatic precipitator and a catalytic cracking unit, and the tar obtained from the tar separation unit 9 is used to produce fuel oil or for power generation.

[0034] In one feasible implementation, the gasification system also includes a control system. The control system is used for fully automated control of the entire process based on the weight, temperature, and pressure data of the gasification system.

[0035] The second aspect of this embodiment provides a gasification method for decommissioned wind turbine blades based on weightlessness monitoring, which is implemented using the decommissioned wind turbine blade gasification system based on weightlessness monitoring provided in the first aspect of this embodiment. Please refer to [link to relevant documentation]. Figure 3 , Figure 3 The illustration shows a step-by-step diagram of a decommissioned wind turbine blade gasification method based on weightlessness monitoring according to an embodiment of this application. This embodiment provides a decommissioned wind turbine blade gasification method based on weightlessness monitoring, which includes the following steps: S1: The decommissioned wind turbine blades are sent to the pyrolysis unit for pyrolysis treatment to generate pyrolysis gas, pyrolysis residue and fiberglass waste. The pyrolysis unit includes a first gas phase outlet, a first solid phase outlet and a solid phase inlet. The pyrolysis gas is discharged through the first gas phase outlet.

[0036] S2: Monitor the weight loss rate of decommissioned wind turbine blades through the control unit.

[0037] S3: When the weight loss rate reaches the preset value, change the horizontal tilt angle of the pyrolysis unit so that the pyrolysis residue and glass fiber waste move towards the first solid phase outlet.

[0038] S4: The pyrolysis residue and glass fiber waste are separated by a residual carbon screening device, so that the pyrolysis residue enters the gasification unit.

[0039] S5: The pyrolysis residue is gasified through a gasification unit to obtain syngas and gasification residue.

[0040] S6: Recover tar from syngas via a tar recovery unit.

[0041] S7: Change the conveying direction of the pyrolysis unit so that the glass fiber waste is discharged from the solid phase inlet.

[0042] Optionally, step S7 can be carried out after the gasification reaction is completed, or after the pyrolysis residue has completely entered the gasification unit.

[0043] This application provides a decommissioned wind turbine blade gasification system based on weight loss monitoring. The system achieves continuous and graded gasification of decommissioned wind turbine blades through a pyrolysis unit and a gasification unit. The pyrolysis reaction process is determined by monitoring the weight loss rate of the decommissioned wind turbine blades. The time when the pyrolysis residue enters the gasification unit is controlled according to the weight loss rate, thereby realizing real-time monitoring and judgment of the reaction process, avoiding incomplete or excessive pyrolysis, and improving gasification efficiency and stability.

[0044] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0045] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A gasification system for decommissioned wind turbine blades based on weightlessness monitoring, characterized in that, include: The pyrolysis unit includes a first gas phase outlet, a first solid phase outlet, and a solid phase inlet. The decommissioned wind turbine blade enters the pyrolysis unit through the solid phase inlet and undergoes pyrolysis treatment to generate pyrolysis gas, pyrolysis residue, and fiberglass waste. The pyrolysis gas is discharged through the first gas phase outlet. The control unit is used to monitor the weight loss rate of the decommissioned wind turbine blades and change the horizontal tilt angle of the pyrolysis unit when the weight loss rate reaches a preset value. A screening device is installed inside the pyrolysis unit to separate the pyrolysis residue and the glass fiber waste residue, wherein the glass fiber waste residue is discharged through the solid phase inlet; A gasification unit is connected to the first solid phase outlet. The pyrolysis residue enters the gasification unit through the first solid phase outlet and is gasified to generate syngas and gasification residue. The gasification unit has a second gas phase outlet for discharging the syngas and a second solid phase outlet for discharging the gasification residue. The tar recovery unit is connected to the second gas phase outlet.

2. The decommissioned wind turbine blade gasification system based on weightlessness monitoring according to claim 1, characterized in that, The control unit includes: A weight monitoring device is installed at the bottom of the pyrolysis unit to monitor the weight of the pyrolysis unit and calculate the weight loss rate of the decommissioned wind turbine blade. When the weight loss rate reaches a preset value, an adjustment signal is sent. The preset value is determined based on the mass percentage of the resin component in the decommissioned wind turbine blade. An adjustment device, electrically connected to the weight monitoring device, is used to change the horizontal tilt angle of the pyrolysis unit according to the adjustment signal, so that the pyrolysis residue enters the gasification unit.

3. The decommissioned wind turbine blade gasification system based on weightlessness monitoring according to claim 2, characterized in that, The control unit is also used to change the horizontal tilt angle of the pyrolysis unit after the pyrolysis residue enters the gasification unit, so that the glass fiber waste is discharged from the solid phase inlet.

4. The decommissioned wind turbine blade gasification system based on weightlessness monitoring according to claim 1, characterized in that, Also includes: The feeding unit is connected to the solid phase inlet of the pyrolysis unit and is used to transport the decommissioned wind turbine blades to the pyrolysis unit.

5. The decommissioned wind turbine blade gasification system based on weightlessness monitoring according to claim 2, characterized in that, The pyrolysis unit includes: a rotary kiln; The top of the rotary kiln is the first gas phase outlet, the starting point of the rotary kiln in the horizontal direction is the solid phase inlet of the pyrolysis unit, and the ending point of the rotary kiln in the horizontal direction is the first solid phase outlet.

6. The decommissioned wind turbine blade gasification system based on weightlessness monitoring according to claim 5, characterized in that, The regulating device includes: The lifting mechanism has a movable end connected to one end of the bottom of the rotary kiln, which is used to change the height of one end of the rotary kiln to change the horizontal tilt angle of the rotary kiln.

7. The decommissioned wind turbine blade gasification system based on weightlessness monitoring according to claim 6, characterized in that, The lifting mechanism includes one of the following: a hydraulic lifting mechanism, an electric push rod mechanism, and a screw lifting mechanism; the horizontal tilt angle adjustment range of the rotary kiln is -10° to 10°.

8. The decommissioned wind turbine blade gasification system based on weightlessness monitoring according to claim 1, characterized in that, The preset value is 25%~35%; The screening device includes a mesh screen with an aperture of 4-6 mm.

9. The decommissioned wind turbine blade gasification system based on weightlessness monitoring according to claim 1, characterized in that, The tar recovery unit includes: A tar separation device, connected to the second gas phase outlet, is used to separate tar from the syngas; A tar combustion device, connected to the tar separation device and the pyrolysis unit, is used to burn tar and transfer the combustion heat to the pyrolysis unit.

10. A gasification method for decommissioned wind turbine blades based on weightlessness monitoring, characterized in that, The decommissioned wind turbine blade gasification system based on weightlessness monitoring, as described in any one of claims 1 to 9, includes the following steps: Decommissioned wind turbine blades are sent to a pyrolysis unit for pyrolysis treatment to generate pyrolysis gas, pyrolysis residue and fiberglass waste residue; the pyrolysis unit includes a first gas phase outlet, a first solid phase outlet and a solid phase inlet, and the pyrolysis gas is discharged through the first gas phase outlet. The weight loss rate of the decommissioned wind turbine blades is monitored by the control unit; When the weight loss rate reaches a preset value, the horizontal tilt angle of the pyrolysis unit is changed, so that the pyrolysis residue and the glass fiber waste move towards the first solid phase outlet. The pyrolysis residue and glass fiber waste are separated by a residual carbon screening device, so that the pyrolysis residue enters the gasification unit. The pyrolysis residue is gasified by a gasification unit to generate syngas and gasification residue. Tar is recovered from the synthesis gas via a tar recovery unit.

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