Method for treating retired fan
By cutting, tearing, crushing and sorting retired wind turbine blades, combined with air and water separation systems, the problems of catalyst and high energy consumption in existing technologies have been solved, achieving low-cost and high-efficiency treatment of retired wind turbines.
Patent Information
- Application Number
- CN202511157695.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-19
- Publication Date
- 2025-10-31
AI Technical Summary
Existing methods for treating decommissioned wind turbine blades require catalysts, have high equipment requirements, consume a lot of energy, and are costly.
By establishing a standardized method for assessing equipment residual value, drawing dismantling maps, identifying key links, cutting, tearing, crushing, and sorting wind turbine blades, and using air and water separation systems for separation, the use of catalysts is avoided, reducing energy consumption and equipment requirements.
It enables efficient screening and processing of decommissioned wind turbines with high value, improves operational efficiency, reduces costs, and requires no catalyst, resulting in lower energy consumption.
Smart Images
Figure CN120861537A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of solid waste treatment technology, and more specifically, to a method for treating decommissioned wind turbines. Background Technology
[0002] Wind turbine blades are one of the core components of wind turbines, possessing excellent characteristics such as low weight, high strength, corrosion resistance, and fatigue resistance. Their weight can account for up to 90% of the entire wind turbine. With the increase in the installed capacity of single wind turbine units, the usage and scrap volume of resin-based fiberglass composite materials are also rapidly increasing. Furthermore, factors such as wind turbine product upgrades and replacements mean that a large number of wind turbine blades will be retired or replaced due to damage or aging. A consensus has been reached on achieving the harmless treatment of retired wind turbine blades through resource utilization, and an increasing number of wind turbine blades require clean recycling.
[0003] Currently, the recycling and reuse of decommissioned wind turbine blades is still in its early stages. Research findings on the treatment and recycling of decommissioned wind turbine blades mainly include physical recycling, incineration, pyrolysis, and dissolution methods. Pyrolysis is a novel technology for the treatment and reuse of decommissioned wind turbine blades that is currently under research and development. It has the advantages of low secondary pollution and high resource recovery rate, and has broad application prospects. However, existing high-temperature pyrolysis technologies are all carried out in the presence of catalysts, which requires the development and selection of suitable catalysts, resulting in high costs. In addition, most existing high-temperature pyrolysis methods use high-temperature flue gas or nitrogen to provide a high-temperature, oxygen-free pyrolysis environment, which consumes a lot of energy and requires vacuum equipment, placing high demands on the processing equipment.
[0004] Therefore, there is a need to develop a method for processing and recycling retired wind turbine blades that does not require a catalyst and has low equipment requirements. Summary of the Invention
[0005] The present invention aims to at least partially solve one of the technical problems in the related art.
[0006] To address this, embodiments of the present invention propose a foldable rock bolt drilling rig pedal device, which includes a foldable movable pedal and a fixed pedal. The folding and locking of the movable pedal can be achieved using a snap-fit mechanical structure, eliminating the need for a dedicated tilting cylinder, thereby solving the problem of limited installation space for foldable pedals on narrow rock bolt drilling rigs.
[0007] The decommissioned wind turbine processing method of this invention includes: establishing a standardized method and database for assessing equipment residual value and assessing the residual value of the decommissioned wind turbine accordingly; drawing a dismantling map for wind turbines that meet the requirements and identifying key dismantling steps; cutting the dismantled wind turbine blades; and tearing, crushing, and sorting the cut wind turbine blades.
[0008] The decommissioned wind turbine processing method of this invention can efficiently screen decommissioned wind turbines with processing value, and improve operational efficiency by investigating, collecting and organizing key parameters such as wind turbine blade size, material, and internal structure to formulate the optimal dismantling process. Moreover, the subsequent cutting, tearing, crushing and sorting processes do not require the addition of catalysts compared to pyrolysis recycling, resulting in lower costs.
[0009] In some embodiments, drawing a disassembly map for a qualified wind turbine and identifying key disassembly steps includes: conducting research, collecting and organizing key parameters such as blade size, material, and internal structure of different types of wind turbines, and designing the disassembly process and key steps accordingly.
[0010] In some embodiments, the cutting of the disassembled wind turbine blades includes: developing a cutting plan for the wind turbine blades and forming a cutting technology analysis report; designing cutting equipment based on the cutting plan and the cutting technology analysis report; and using the cutting equipment to cut the blades into fragments of different sizes that meet the requirements.
[0011] In some embodiments, the cutting sequence is blade shell - main beam - web - blade root.
[0012] In some embodiments, the cutting process consists of cutting preparation, equipment inspection, cutting operation, and cutting completion, in that order.
[0013] In some embodiments, the shredding, crushing and sorting of the cut wind turbine blades includes: feeding the cut fragments into a shredder for shredding; and feeding the crushed material output from the shredder into a hammer crusher for crushing.
[0014] In some embodiments, feeding the cut fragments into a shredder for shredding includes:
[0015] The leaf fragments are fed into a primary shredder for primary shredding;
[0016] The material output from the primary shredder is fed into the secondary shredder for secondary shredding.
[0017] In some embodiments, it also includes:
[0018] The air separation and water separation system is designed based on the characteristics of the blade fragments;
[0019] The crushed material output from the hammer crusher is sorted using an air separation and water separation system to separate balsa wood, PVC, long glass fiber, short glass fiber, and resin powder.
[0020] In some embodiments, it also includes:
[0021] Dust collectors are installed to remove dust from primary crushing, secondary crushing, hammer crushing, and sorting processes.
[0022] In some embodiments, the method further includes: setting up noise reduction equipment to reduce noise in primary crushing, secondary crushing, hammer crushing, sorting processes, etc. Attached Figure Description
[0023] Figure 1 This is a schematic flowchart of a decommissioned wind turbine processing method according to an embodiment of the present invention.
[0024] Figure 2 This is a schematic diagram of the cutting process in the decommissioned wind turbine processing method according to an embodiment of the present invention. Detailed Implementation
[0025] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0026] like Figure 1 As shown, the decommissioned wind turbine processing method of this invention includes:
[0027] S1: Establish a standardized method and database for assessing the residual value of equipment and use this database to assess the residual value of decommissioned wind turbines. Specifically, a professional appraisal agency will conduct a value assessment of the decommissioned equipment and generate a value assessment report. At the same time, a professional team will complete the screening, testing, and verification of decommissioned equipment and parts. Parts and equipment with continued use value can be transferred through a transfer process, while parts without continued use value will be disposed of as scrap.
[0028] S2: Draw disassembly maps for qualified wind turbines and identify key disassembly steps. Specifically, conduct research, collect and organize key parameters such as blade size, material, and internal structure for different types of wind turbines, and design the disassembly process and key steps accordingly.
[0029] S3: Cut the disassembled fan blades;
[0030] S4: Tear, crush and sort the cut fan blades.
[0031] The decommissioned wind turbine processing method of this invention can efficiently screen decommissioned wind turbines with processing value, and improve operational efficiency by investigating, collecting and organizing key parameters such as wind turbine blade size, material, and internal structure to formulate the optimal dismantling process. Moreover, the subsequent cutting, tearing, crushing and sorting processes do not require the addition of catalysts compared to pyrolysis recycling, resulting in lower costs.
[0032] Furthermore, the cutting of the disassembled wind turbine blades includes: preparing a cutting plan for the wind turbine blades and forming a cutting technology analysis report; then designing cutting equipment based on the cutting plan and the cutting technology analysis report; and finally using the cutting equipment to cut the blades into pieces of different sizes that meet the requirements.
[0033] Furthermore, the cutting sequence is as follows: blade shell - main beam - web - blade root.
[0034] Furthermore, the cutting process consists of cutting preparation, equipment inspection, cutting operation, and cutting completion, in that order.
[0035] Specifically, such as Figure 2 As shown, the cutting preparation includes: personnel entry, checking relevant safety protection and handover documents.
[0036] Equipment inspection includes checking the commissioning records to see if there are any abnormalities. If there are any abnormalities in the commissioning records, they need to be repaired. If there are no abnormalities, the equipment is started.
[0037] The cutting operation includes: cutting the blades according to the cutting route, using a detection device to monitor the quality in real time during the cutting process, and taking environmental measures such as dust removal and noise reduction to optimize the on-site environment, as well as cleaning the cut blades.
[0038] The cutting process includes: shutting down and powering off the equipment after the blades are cut, loading the cut blades onto the truck, and finally restoring the site.
[0039] Furthermore, the shredding, crushing, and sorting of the cut wind turbine blades includes: feeding the cut fragments into a shredder for shredding, and then feeding the shredded material from the shredder into a hammer crusher for crushing. In other words, the pre-treated blades are first shredded, and then crushed using a hammer crusher. The shredder can quickly break large pieces of material into fine particles, while the hammer crusher uses high-speed rotating hammers to impact and shear the material, resulting in relatively low energy consumption.
[0040] Specifically, feeding the cut fragments into the shredder for shredding includes: feeding the blade fragments into a primary shredder for primary shredding, and then feeding the output of the primary shredder into a secondary shredder for secondary shredding. In other words, the fragments undergo multi-gradient shredding before entering the hammer crusher, forming a gradual shredding process of "coarse" to "refined".
[0041] Furthermore, an air separation and water separation system is designed based on the characteristics of the blade fragments. The air separation and water separation system is used to sort the crushed material output by the hammer crusher to separate balsa wood, PVC, long glass fiber, short glass fiber and resin powder.
[0042] Furthermore, the tearing, crushing, and sorting of the cut fan blades also includes installing dust collectors to remove dust from the primary crushing, secondary crushing, hammer crushing, and sorting processes.
[0043] Furthermore, the tearing, crushing and sorting of the cut wind turbine blades also includes: setting up noise reduction equipment to reduce noise in the primary crushing, secondary crushing, hammer crushing and sorting processes.
[0044] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0046] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0048] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0049] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A method for handling decommissioned wind turbines, characterized in that, include: Establish a standardized method and database for assessing the residual value of equipment, and use this method to assess the residual value of decommissioned wind turbines; For wind turbines that meet the requirements, create dismantling maps and identify key dismantling steps; Cut the disassembled fan blades; The cut fan blades are then shredded, crushed, and sorted.
2. The method for handling decommissioned wind turbines according to claim 1, characterized in that, The process of creating dismantling maps for eligible wind turbines and identifying key dismantling steps includes: Complete the research, collection and organization of key parameters such as blade size, material and internal structure of different types of wind turbines, and design the disassembly process and key steps accordingly.
3. The method for handling decommissioned wind turbines according to claim 1, characterized in that, The cutting of the disassembled wind turbine blades includes: Develop a cutting plan for the wind turbine blades and generate a cutting technology analysis report; Design cutting equipment based on the cutting plan and cutting technology analysis report; The blades are cut into pieces of different sizes to meet the requirements using cutting equipment.
4. The method for handling decommissioned wind turbines according to claim 3, characterized in that, The cutting sequence is as follows: blade shell - main beam - web - blade root.
5. The method for treating decommissioned wind turbines according to claim 3, characterized in that, The cutting process consists of the following steps: cutting preparation, equipment inspection, cutting operation, and cutting completion.
6. The method for treating decommissioned wind turbines according to claim 3, characterized in that, The process of tearing, crushing, and sorting the cut wind turbine blades includes: The cut pieces are fed into a shredder to be shredded; The shredded material output from the shredder is fed into the hammer crusher for further crushing.
7. The method for treating decommissioned wind turbines according to claim 6, characterized in that, The process of feeding the cut fragments into a shredder for shredding includes: The leaf fragments are fed into a primary shredder for primary shredding; The material output from the primary shredder is fed into the secondary shredder for secondary shredding.
8. The method for handling decommissioned wind turbines according to claim 6, characterized in that, Also includes: The air separation and water separation system is designed based on the characteristics of the blade fragments; The crushed material output from the hammer crusher is sorted using an air separation and water separation system to separate balsa wood, PVC, long glass fiber, short glass fiber, and resin powder.
9. The method for handling decommissioned wind turbines according to claim 7, characterized in that, Also includes: Dust collectors are installed to remove dust from primary crushing, secondary crushing, hammer crushing, and sorting processes.
10. The method for handling decommissioned wind turbines according to claim 7, characterized in that, Also includes: Noise reduction equipment is installed to reduce noise in primary crushing, secondary crushing, hammer crushing, and sorting processes.