Method and system for recycling decommissioned wind turbine blades and incineration ash

Abstract

A method and system for recycling decommissioned wind turbine blades and incineration ash. The method comprises: smashing decommissioned wind turbine blades by using a mechanical method, so as to prepare a granular and fibrous modified material I; subjecting the incineration ash of waste from a garbage power plant to a preset curing and crushing treatment, so as to obtain a modified material II; and adding the modified material I and the modified material II to a cement base material to prepare concrete, and drying and molding same, so as to obtain a base material of an energy storage component. By mechanically performing the smashing treatment, environmental pollution and the wastage of resources can be reduced; environmental pollution caused by traditional treatments is avoided by obtaining the modified material II; and by blending the two modified materials into a cement base material at a certain ratio to prepare concrete and produce a base material of an energy storage component, the ultimate utilization of waste is achieved, the total costs for disposing decommissioned wind turbine blades and waste incineration ash are reduced, and the resource utilization of decommissioned wind turbine blades and waste incineration ash is achieved.

Description

A method and system for recycling retired fan blades and incineration ash Technical Field

[0001] The present invention relates to the field of energy and environmental protection technology, and in particular to a method and system for recycling retired fan blades and incineration ash. Background Art

[0002] As a clean energy source, wind energy has been widely used. However, a large number of wind turbine blades from early wind turbines have reached the end of their service life or have exceeded their design life due to long-term severe weather conditions and various environmental factors, and are facing the problem of retirement. Since the materials used in waste blades are extremely difficult to reshape and the recycling process is complicated, the recycling of retired wind turbine blades has become a technical direction that needs to be improved urgently in the wind power industry.

[0003] While traditional methods exist for separating and recycling retired wind turbine blades, including mechanical, thermal, and chemical methods, they are primarily disposed of in landfills or on-site burials. Traditional recycling methods are not cost-effective for large-scale wind turbine blade processing due to the small market size, high cutting and transportation costs, and low recycling value, resulting in high overall costs.

[0004] In order to solve the difficulties existing in the traditional method of recycling retired wind turbine blades, the latest wind turbine blade recycling technology uses pyrolysis or chemical methods to separate the components of retired wind turbine blades, recover the glass fiber therein and use it as a component of concrete material. Although the glass fiber in retired wind turbine blades can be recycled, the problem is that the density of glass fiber is relatively low, which leads to a low density of concrete, making the compressive strength relatively limited, and the cost of glass fiber is relatively high. The large-scale use of glass fiber leads to high raw material costs for concrete components.

[0005] In view of this, it is necessary to improve the wind turbine blade recycling technology in the existing technology to solve the technical problem of low recycling rate.

[0006] Summary of the Invention

[0007] The purpose of the present invention is to provide a method and system for recycling retired wind turbine blades and incineration ash made of glass fiber to solve the above technical problems.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] A method for recycling retired fan blades and incineration ash, characterized by comprising:

[0010] The retired wind turbine blades are crushed by mechanical methods to obtain modified materials in the form of particles and fibers.

[0011] Performing a preset solidification treatment on the waste incineration ash of the waste power plant to form stable ash sand, and crushing the stable ash sand to obtain modified material 2;

[0012] The modified material 1 and the modified material 2 are added into a cement base material to prepare concrete, and then dried and formed to obtain an energy storage component base material.

[0013] In some embodiments, the mechanical method of crushing the retired wind turbine blades to obtain the modified material 1 in the form of particles and fibers specifically includes:

[0014] The dismantled retired wind turbine blades are cut into blade fragments less than 2m in length by cutting equipment. After washing the blade fragments, the metal and non-metal are separated to obtain non-metallic blade fragments;

[0015] Secondary crushing of non-metallic blade fragments;

[0016] The secondary crushed blade fragments are crushed by a grinding device to obtain ground blade fragments;

[0017] The ground blade fragments are air-classified into fine materials smaller than 100 mesh and coarse materials larger than 100 mesh, and the coarse materials are returned to the mill for fine grinding so that all materials are smaller than 100 mesh, thereby obtaining a modified material in the form of particles and fibers.

[0018] In some embodiments, the secondary crushing of the non-metallic blade fragments specifically includes:

[0019] A double-shaft shearing crusher is used to crush the non-metallic blade fragments for the first time, so that the size of the output material is less than 200mm;

[0020] The output material is crushed for the second time so that the size of the second-shredded output material is less than 50 mm, thereby obtaining second-crushed blade fragments.

[0021] In some embodiments, the method of performing a preset solidification treatment on the waste incineration ash from the waste-to-energy plant to form stable ash sand, and crushing the stable ash sand to obtain the modified material 2 specifically includes:

[0022] Adding the waste incineration fly ash to the preset additives and mixing them to form stable ash sand;

[0023] Curing and molding the mixed stabilized lime sand; wherein the curing time is greater than 7 days;

[0024] The stabilized lime sand after curing is crushed by a grinding machine so that the particle size of the crushed stabilized lime sand is less than 5mm;

[0025] The stabilized ash sand after crushing is subjected to air flow classification treatment to form coarse granular materials with a particle size greater than 5 mm and fine granular materials with a particle size less than 5 mm. The coarse granular materials are returned to the mill for further grinding treatment until the particle size of all granular materials is less than 5 mm, so as to form a stable modified material 2.

[0026] In some embodiments, the adding of predetermined additives to the waste incineration fly ash and mixing the mixture to form stable ash sand specifically includes:

[0027] Carry out preliminary treatment of waste incineration fly ash;

[0028] A first preset ratio of metakaolin, a second preset ratio of water, and a third preset ratio of glass powder are added to the preliminarily treated waste incineration fly ash and mixed for 3 to 5 minutes; the first preset ratio is the weight of the waste incineration fly ash: the weight of the kaolin = 100:10; the second preset ratio is the weight of the waste incineration fly ash: the weight of the water = 100:30; the third preset ratio is the weight of the waste incineration fly ash: the weight of the glass powder = 100:3.

[0029] In some embodiments, the modified material 1 and the modified material 2 are added to a cement base material to prepare concrete to obtain an energy storage component base material; specifically comprising:

[0030] Adding the modified material 2 in a fourth preset ratio to the base material mixture and pouring the mixture into a mixing container for stirring for 5 to 15 minutes; the base material mixture includes a cement base material, water, and a water retarder;

[0031] Adding a fifth preset proportion of modified material 1 into the mixing container and mixing and stirring for 5 to 15 minutes to obtain concrete mortar;

[0032] Pour the concrete mortar into the preset mold for shaping and pressing. The pressing time is 12 to 24 hours.

[0033] The pressed molded product is cured for 7 to 14 days to be formed into a base material for an energy storage component.

[0034] In some embodiments, the fourth preset ratio is that the second modifying material accounts for 10% of the base material mixture, and the fifth preset ratio is that the first modifying material accounts for 10% of the base material mixture.

[0035] The present invention further provides a recycling system for retired fan blades and incineration ash, which is applied to the above-mentioned recycling method for retired fan blades and incineration ash. The recycling system comprises:

[0036] Cutting module, used to cut retired wind turbine blades into blade fragments less than 2m;

[0037] A separation module is used to separate metal and non-metal blade fragments;

[0038] A solidification treatment module performs solidification treatment on the waste incineration fly ash, wherein the solidification treatment includes adding a preset additive and mixing;

[0039] A mixing module, used for mixing the modified material 1 and the modified material 2 according to the cement base material to prepare concrete mortar;

[0040] A control system is used to monitor and control the recycling system.

[0041] In some embodiments, a system for recycling retired wind turbine blades and incineration ash further comprises:

[0042] Grinding equipment is used to perform secondary crushing of non-metallic blade fragments and fine grinding of coarse materials returned from air classification to make the output material reach the preset size;

[0043] The classification module is used to classify the ground blade fragments by air flow.

[0044] In some embodiments, a system for recycling retired wind turbine blades and incineration ash further comprises:

[0045] Mould pressing module, used for pouring concrete mortar into the mould and pressing it into shape;

[0046] The maintenance module is used to maintain the pressed mold products.

[0047] The beneficial effects of the present invention include:

[0048] During processing, mechanical methods are used to crush retired wind turbine blades to produce modified materials in the form of particles and fibers. Compared with pyrolysis and chemical treatment methods, mechanical methods can reduce environmental pollution and resource waste; a preset solidification treatment method is used to treat the incineration ash of waste power plants and convert it into stable ash sand, which is then crushed to reduce its size to obtain modified material 2. These two modified materials are mixed into a cement matrix in a certain proportion to prepare concrete, generating an energy storage component matrix. The stable ash sand and the cement matrix react to form fly ash aggregates. The fibers in the retired wind turbine blades enhance the strength of the fly ash aggregate components, ensuring the mechanical properties required for the gravity energy storage components. At the same time, by utilizing the incineration ash of waste power plants, the cost of raw materials is reduced, and the resource utilization of wind turbine blades and waste incineration ash is realized. In the process of making stabilized ash sand, since the harmless disposal of waste incineration fly ash can be carried out in the waste incineration plant, that is, the drying and molding can be carried out in the incineration plant; and the stabilized ash sand is crushed and air flow graded to prepare modified materials. The crushing and grading equipment of modified materials can be prepared using retired fan blades, reducing equipment investment.

[0049] In some embodiments, the removed retired wind turbine blades are first cut into blade fragments less than 2 m in length for easy transportation, and then further crushed.

[0050] Other beneficial effects of the embodiments of the present invention will be further described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] FIG1 is a schematic diagram of the process structure of the recycling method of the first embodiment;

[0052] FIG2 is a schematic flow chart of step S1 of the recycling method of the first embodiment;

[0053] FIG3 is a schematic flow chart of step S2 of the recycling method of the first embodiment;

[0054] FIG4 is a schematic flow chart of step S3 of the recycling method of the first embodiment;

[0055] FIG5 is a schematic diagram of the process of step S1 of the recycling method of the first embodiment;

[0056] FIG6 is a microscopically enlarged schematic diagram of the blade fragments after grinding in step S1 of the recycling method of the first embodiment;

[0057] FIG7 is a schematic diagram of the process of step S2 of the recycling method of the first embodiment;

[0058] FIG8 is a schematic diagram of the process of step S3 of the recycling method of the first embodiment. DETAILED DESCRIPTION

[0059] The following is a detailed description of the embodiments of the present invention. It should be emphasized that the following description is only exemplary and is not intended to limit the scope of the present invention and its application.

[0060] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0061] In the description of the present invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally located component.

[0062] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0063] Example 1:

[0064] As shown in FIG1 , which is a schematic diagram of the process structure of the recycling method of the first embodiment of the present invention, it can be seen that the embodiment of the present invention provides a method for recycling retired fan blades and incineration ash. The retired fan blades are preferably retired fan blades made of glass fiber and retired fan blades made of carbon fiber (the following cases preferably use retired fan blades made of glass fiber). The incineration ash is preferably fly ash from garbage incineration. The fly ash from garbage incineration can be collected through existing boiler flues, flue gas flues, bag dust collectors and other processing facilities. The method includes:

[0065] S1, mechanically crushing retired wind turbine blades made of glass fiber to obtain a modified material 1 in the form of particles and fibers;

[0066] Use mechanical methods to crush retired wind turbine blades into granular and fibrous materials, namely modified material 1. This step is the initial stage of the entire process. The crushing process can greatly reduce the volume of the blades, facilitating subsequent processing. In addition, the granular and fibrous modified material 1 after crushing can be used as the substrate of energy storage components to increase the tensile strength of the substrate of the energy storage components.

[0067] S2, performing a preset solidification treatment on the waste incineration ash from the waste-to-energy plant to form stable ash sand, and crushing the stable ash sand to obtain modified material 2;

[0068] The waste incineration ash from the waste-to-energy plant is pre-solidified to transform it into stable ash sand, which is then crushed to produce modified material 2. This step not only stabilizes the waste incineration ash and prevents the spread of residual pollution, but also transforms the originally environmentally harmful substances into materials that can be safely utilized.

[0069] S3, adding modified material 1 and modified material 2 to a cement base material according to a first preset ratio to prepare concrete, and drying and shaping the concrete to obtain an energy storage component base material;

[0070] Modified Material 1 and Modified Material 2 are added to a cement base material in a predetermined ratio and mixed to form concrete, creating the energy storage component base. This step utilizes the physical properties of retired wind turbine blades made of fiberglass, allowing them to become part of the concrete and provide the necessary structural support for the energy storage component base. The use of modified materials also reduces the need for new materials, contributing to resource conservation.

[0071] The working principle of the present invention is as follows: during processing, a mechanical method is used to crush the retired fan blades of glass fiber to obtain modified materials in the form of particles and fibers. Compared with pyrolysis and chemical treatment methods, the mechanical method can reduce environmental pollution and resource waste; a preset solidification treatment method is used to treat the incineration ash of the waste power plant and convert it into stable ash sand, and then the stable ash sand is crushed to reduce the size to obtain modified material 2. The two modified materials are mixed into the cement matrix in a certain proportion to prepare concrete to generate the energy storage component matrix. The stable ash sand and the cement matrix react to form fly ash aggregates. The fibers of the sheet enhance the strength of the fly ash aggregate component, ensuring the mechanical properties required for the gravity energy storage component. At the same time, by utilizing the incineration ash from the waste power plant, the cost of raw materials is reduced, the resource utilization of wind turbine blades and waste incineration ash is realized, and the performance of the component materials is improved through a unique method. Compared with the wind turbine blade recycling technology in the existing technology, this recycling method reduces the total cost of disposing of retired wind turbine blades with glass fibers and waste incineration ash, and solves the problems of the difficulty of recycling thermosetting composite materials, complex processes, and lack of recycling and high-value technologies, thus realizing the resource utilization of wind turbine blades and waste incineration ash. At the same time, in the process of making stabilized ash sand, because the harmless disposal of waste incineration fly ash can be carried out in the waste incineration plant, that is, the drying and molding can be carried out in the incineration plant; and the crushing and airflow classification of the stabilized ash sand to prepare the modified material can use the crushing and grading equipment of the modified material prepared by retired wind turbine blades with glass fibers, thereby reducing equipment investment.

[0072] As shown in FIG2 and FIG5, respectively, are a schematic diagram of the process structure of step S1 of the recycling method of the first embodiment and a schematic diagram of the process manufacturing of step S1 of the recycling method. It can be seen that, in this embodiment, step S1 specifically includes:

[0073] S11, cutting the disassembled fiberglass retired wind turbine blades (i.e., scrapped wind turbine blades) into blade fragments less than 2 m in length using a cutting device, washing the blade fragments, and separating the metal and non-metal components to obtain non-metal blade fragments;

[0074] First, the blades are cut into blade fragments less than 2m in length to reduce the volume of the blades for subsequent processing (for example, to facilitate transportation); then, the blade fragments are washed, a process that can remove dust and other pollutants on the blade surface; finally, by separating metal and non-metal, non-metallic blade fragments suitable for the next step of processing are obtained; combined with the mechanical properties analysis of the energy storage component substrate, the non-metallic blade fragments are conducive to the formation of a fiber filament structure, thereby improving the tensile strength of the energy storage component substrate.

[0075] S12, performing secondary crushing on the non-metallic blade fragments; a Raymond mill, a vertical mill, or other grinding equipment may be used to grind the secondary crushed fan blades so that the discharge size of the fine material is controlled to be less than 100 mesh;

[0076] Among them, the purpose of secondary crushing is to further reduce the size of the blades so as to carry out the next step of crushing.

[0077] S13, using a grinding device to grind the secondary crushed blade fragments to obtain ground blade fragments; FIG6 is a microscopic diagram of the ground blade fragments (in which the ground and recovered fibers and epoxy resin particles marked in the dotted box can be seen);

[0078] At this stage, the leaves are transported to the grinding equipment for crushing, which makes the leaves smaller and ensures that the output size is less than 100 mesh, so that the granular and fibrous materials generated provide raw materials for the next steps.

[0079] S14, the ground blade fragments are subjected to air flow classification into fine materials smaller than 100 mesh and coarse materials larger than 100 mesh, and the coarse materials are returned to the mill for fine grinding so that all materials are smaller than 100 mesh, thereby obtaining a modified material 1 in the form of particles and fibers.

[0080] This step is a screening and optimization process. Through airflow classification, the coarse materials are returned to the mill for fine grinding until all the materials reach a particle size of less than 100 mesh, thus ensuring the quality of the generated products.

[0081] It is further explained that, in this embodiment, step S12 specifically includes:

[0082] S121, a double-shaft shearing crusher is used to perform the first crushing process on the non-metallic blade fragments, so that the size of the output material is less than 200mm;

[0083] In this step, a twin-shaft shearing shredder is used to perform the initial crushing of the non-metallic blade fragments. This highly efficient crushing device effectively reduces the blade fragments to a size of less than 200mm. This ensures that the blades can be more finely crushed in the next stage.

[0084] S122, the output material is crushed for the second time, so that the size of the second-shredded output material is less than 50 mm, thereby obtaining second-crushed blade fragments.

[0085] The material coming out of the twin-shaft shear crusher is subjected to a second crushing process to further reduce the size to less than 50 mm. This stage of processing ensures standardized fragment size, thus preparing it for the next step of crushing.

[0086] In summary, during these two steps, the blade fragments undergo coarse crushing followed by fine crushing, gradually reducing the size of the material and paving the way for subsequent comminution. This two-step, progressive crushing design utilizes crushing equipment of varying sizes to gradually refine the material, making the overall processing flow smoother and more efficient.

[0087] As shown in FIG3 and FIG7, respectively, are a schematic diagram of the process structure of step S2 of the recycling method of the first embodiment and a schematic diagram of the process manufacturing of step S2 of the recycling method. It can be seen that, in this embodiment, step S2 specifically includes:

[0088] S21, adding preset additives to the waste incineration fly ash and mixing them to form stable ash sand; wherein the additives include curing agents or other modifiers, which can help change the physical properties of the fly ash and reduce its possible pollution to the environment.

[0089] S22, curing and molding the mixed stabilized lime sand; wherein the curing time is greater than 7 days; it is necessary to maintain a period of more than 7 days in order to completely solidify the stabilized lime sand.

[0090] S23, uses a grinding mill to crush the stabilized ash sand after curing so that the particle size of the crushed stabilized ash sand is less than 5mm; by controlling the particle size, not only the fluidity during subsequent mixing and use can be changed, but also the consistency and uniformity of the subsequent finished product can be further improved.

[0091] S24, the stabilized ash sand after crushing is subjected to air classification to form coarse particles with a particle size greater than 5 mm and fine particles with a particle size less than 5 mm. The coarse particles are returned to the mill for further grinding until all particles have a particle size less than 5 mm, thereby forming a stable modified material 2. The stabilized ash sand after curing is crushed in the mill until the particle size of the crushed stabilized ash sand is less than 5 mm. By controlling the particle size, not only can the flowability during subsequent mixing and use be improved, but the consistency and uniformity of the subsequent finished product can also be further improved.

[0092] It should be noted that in the process of making stabilized ash sand, since the harmless disposal of waste incineration fly ash can be carried out in the incineration plant, that is, the drying and molding can be carried out in the incineration plant; and the stabilized ash sand is crushed and air flow graded to prepare modified materials. The crushing and grading equipment for the modified materials can be prepared by using retired glass fiber fan blades, thereby reducing equipment investment.

[0093] Specifically, in this embodiment, step S21 specifically includes:

[0094] S211, preliminary treatment of waste incineration fly ash; the specific methods of preliminary treatment include screening, crushing, and washing processes, the purpose of which is to remove large particles of impurities or potential harmful substances in the fly ash, and create good starting conditions for subsequent modification operations.

[0095] S212, adding a first preset ratio of metakaolin, a second preset ratio of water and a third preset ratio of glass powder to the preliminarily treated waste incineration fly ash and mixing them for 3 to 5 minutes to uniformly mix the components; the first preset ratio is the weight of waste incineration fly ash: the weight of kaolin = 100:10; the second preset ratio is the weight of waste incineration fly ash: the weight of water = 100:30; the third preset ratio is the weight of waste incineration fly ash: the weight of glass powder = 100:3.

[0096] 1. The weight ratio of incineration fly ash to kaolin is 100:10. Metakaolin has excellent ion exchange capacity, stabilizing potentially harmful substances in fly ash, preventing their loss and environmental impact. It also improves the plasticity and stability of the mixture. The 10% ratio was chosen based on actual needs and empirical data to meet the aforementioned functional requirements without introducing excessive costs.

[0097] Second, the weight ratio of fly ash to water is 100:30. Water is a crucial component of the mixture, helping to blend the fly ash, kaolin, and glass powder into a uniform paste while also promoting chemical reactions and the curing process. A 30% ratio ensures good fluidity and meets the requirements for subsequent curing and molding.

[0098] 3. The ratio of incineration fly ash weight to glass powder weight is 100:3. Glass powder serves as a source of silica, contributing to chemical reactions and further enhancing the stability and hardness of the stabilized ash sand. While this role is important, a 3% ratio was chosen because the amount of glass powder required for the chemical reaction is relatively small, and excessive glass powder can affect the fluidity and uniformity of the mixture.

[0099] In summary, the design of the mixing ratio aims to optimize the performance of the modified material according to the characteristics of the fly ash and the requirements of the final product.

[0100] As shown in FIG4 and FIG8, respectively, are a schematic diagram of the process structure of step S3 of the recycling method of the present embodiment 1 and a schematic diagram of the process manufacturing of step S3 of the recycling method. It can be seen that, in this embodiment, step S3 specifically includes:

[0101] S31, adding the modified material 2 in a fourth preset ratio to the base material mixture and pouring it into a mixing container for stirring. The stirring time is 5 to 15 minutes (preferably 10 minutes); the base material mixture includes a cement base material, water, and a water retarder.

[0102] The cement base, water, the second modifying material and the water retarder in a fourth preset ratio are mixed together and stirred for 10 minutes; the cement base is the main component of concrete, and the second modifying material and the water retarder can improve the performance of concrete; the water retarder helps to prolong the hardening time of the cement and ensure that the mixture has enough time to be fully mixed.

[0103] S32, adding the modified material 1 in a fifth preset proportion into the mixing container and mixing and stirring for 5 to 15 minutes (preferably 10 minutes) to obtain concrete mortar.

[0104] Then, the fifth preset ratio of modified material 1 is added and mixed for another 10 minutes. The addition of modified material 1 can further improve the performance of the concrete mortar. After two mixing steps, the various components mixed into the mortar can be fully mixed to form a uniform concrete mortar.

[0105] S33, pouring the concrete mortar into a preset mold for shaping and pressing, the pressing time is 12 to 24 hours (preferably 24 hours); wherein the preset mold can be adjusted and designed accordingly according to the structure of the energy storage component substrate.

[0106] The concrete mortar is poured into a preset mold for shaping and pressing. The pressing time is 24 hours. This step is to allow the concrete mortar to be shaped and solidified in the mold; pressing can ensure that the concrete is dense, has no pores, and has a regular shape.

[0107] S34, curing the molded product for 7 to 14 days (preferably 7 days) to form it into an energy storage component substrate.

[0108] The pressed molded products are cured for 7 days. This step is mainly to ensure that the concrete mortar is fully cured and forms a stable energy storage component base material.

[0109] As a preferred embodiment of this embodiment, the fourth preset ratio is 10% of the base material mixture for the second modifying material, and the fifth preset ratio is 10% of the base material mixture for the first modifying material. As shown in Table 1, as the amount of the second modifying material increases, the slump, 28d compressive strength, and 28d flexural strength first gradually increase and then decrease. It is foreseeable that these three performance indicators will reach their peak values ​​between 10% and 20% of the amount.

[0110] The weight ratios of modified material 1 and modified material 2 added to cement at different ratios, and the corresponding comprehensive concrete properties of the gravity energy storage module are shown in Table 1:

[0111] Table 1

[0112] Note: Group 1 is the control group; the variables of groups 2-6 are modified material 2, and the variables of groups 7-8 are modified material 1 and modified material 2.

[0113] It can be observed that when the age of modified material 2 and modified material 1 is 28 days, the different dosages added in different groups have an impact on the slump, compressive strength and flexural strength of concrete:

[0114] Groups 2-6: These groups only added Modified Material 2 as a variable to the concrete; when the content of Modified Material 2 increased from 5% to 25%, the slump was observed to vary between 180mm and 200mm, which should be due to the increased expansion factor of Modified Material 2. The 28d compressive strength reached its highest level of 46.5MPa when the content of Modified Material 2 was 15%. This is because an appropriate amount of Modified Material 2 can increase the consistency of concrete and enhance its compressive resistance. When the content of Modified Material 2 continued to increase, the compressive strength decreased. This is because the excessive amount of Modified Material 2 affected the structural stability of the concrete; therefore, it is necessary to know that the proportion of Modified Material 2 should be set within a reasonable range to ensure the stability of the final energy storage component substrate.

[0115] Groups 7-8: These groups added both Modifier 1 and Modifier 2 to their concrete. It can be observed that increasing the content of Modifier 1 from 5% to 10% resulted in an increase in slump, as well as improvements in both compressive and flexural strength. The strength of the concrete also improved with increasing the content of Modifier 1. This suggests that the addition of Modifier 1 acts as a reinforcing agent, improving the overall performance of the concrete.

[0116] Considering the environmental and energy-saving impacts of concrete, as well as the effects of the dosage of modified material 2 and fine material from wind turbine blades on concrete performance, it can be seen that, while simultaneously disposing of waste and decommissioned equipment, the process of this embodiment successfully transforms these waste materials into new, higher-value concrete materials, achieving resource recycling and waste reduction. The optimal ratio should be determined based on specific needs and cost-effectiveness.

[0117] Example 2:

[0118] The present invention also provides a recycling system for retired glass fiber fan blades and incineration ash, which is applied to the recycling method for retired glass fiber fan blades and incineration ash of Example 1. The recycling system includes:

[0119] A cutting module for cutting fiberglass retired wind turbine blades into blade fragments less than 2m;

[0120] A separation module is used to separate metal and non-metal blade fragments;

[0121] A solidification treatment module performs solidification treatment on the waste incineration fly ash, wherein the solidification treatment includes adding a preset additive and mixing;

[0122] A mixing module, used for mixing modified material 1, modified material 2 and cement base material to prepare concrete mortar;

[0123] A control system is used to monitor and control the recycling system.

[0124] The system works as follows: the cutting module cuts the retired wind turbine blades into smaller parts (less than 2 meters); the purpose of cutting is to make the blades easier to handle and manipulate for use in subsequent steps.

[0125] Next comes the separation module, which separates the metal and non-metal parts from the wind turbine blades. This step is because the treatment and use of the metal and non-metal parts are different; the metal can be recycled, while the non-metal is used for the next step.

[0126] The solidification module then solidifies the fly ash, adding pre-defined additives and mixing it. This allows the fly ash to be transformed into a more stable and safer material suitable for use as part of concrete.

[0127] The mixing module combines the aforementioned non-metallic components with the solidified fly ash, along with other raw materials such as Modifier 1 and Modifier 2, and mixes them with the cement base to create concrete mortar. The goal of this step is to produce concrete with strong bonding and superior performance.

[0128] Finally, the control system will monitor the operation of each module to ensure the normal and efficient operation of the entire system, and will also collect data for continuous optimization.

[0129] The beneficial effects of this system are:

[0130] 1. This system enables the effective recycling of retired wind turbine blades and waste incineration fly ash, further improving resource utilization efficiency, reducing waste landfills, and benefiting environmental protection.

[0131] 2. Through modified materials and special treatment technology, the new concrete mortar produced has higher compressive strength and flexural strength, and has broad application prospects.

[0132] 3. The system not only reuses waste and reduces raw material costs, but its automated design can greatly improve production efficiency, save manpower and enhance economic benefits.

[0133] 4. The system innovatively combines wind turbine blade and fly ash recycling technology with concrete production technology, helping to promote the development of related technologies.

[0134] In this embodiment, the recycling system further includes:

[0135] The grinding equipment is used for secondary crushing of non-metallic blade fragments and fine grinding of coarse materials returned from air classification to make the output material reach the preset size.

[0136] The classification module is used to classify the ground blade fragments by air flow.

[0137] Used for preparing the modified material 2 in steps S21 to S24.

[0138] In this embodiment, the recycling system further includes:

[0139] The mold pressing module is used to pour concrete mortar into the mold and press it into shape.

[0140] The maintenance module is used to maintain the pressed mold products.

[0141] Used for preparing the energy storage component substrate in steps S31 to S34.

[0142] The above description further details the present invention in conjunction with specific / preferred embodiments, and the specific implementation of the present invention should not be construed as being limited to these descriptions. Persons skilled in the art will appreciate that, without departing from the spirit of the present invention, they may make various substitutions or modifications to the described embodiments, and these substitutions or modifications should be considered to fall within the scope of protection of the present invention. Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "preferred embodiments," "examples," "specific examples," or "some examples" indicates that the specific features, structures, materials, or characteristics described in conjunction with such embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of these 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 any one or more embodiments or examples. Persons skilled in the art may combine and assemble the different embodiments or examples described in this specification, as well as features of different embodiments or examples, without conflicting opinions. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions, and modifications may be made herein without departing from the scope of protection of the patent application.

Claims

1. A method for recycling retired wind turbine blades and incineration ash, characterized in that, Including: Mechanically crushing retired wind turbine blades to obtain modified material one in the form of particles and fibers; Performing preset solidification treatment on the waste incineration ash of a waste power plant to form stable ash sand, and performing crushing treatment on the stable ash sand to obtain modified material two; Adding the modified material one and the modified material two into a cement base material to prepare concrete, and drying and shaping to obtain a substrate for an energy storage component.

2. The recycling method of retired wind turbine blades and incineration ash according to claim 1, characterized in that, The mechanically crushing the retired wind turbine blades to obtain modified material one in the form of particles and fibers specifically includes: Cutting the disassembled retired wind turbine blades by a cutting device into blade fragments with a length less than 2 m, rinsing the blade fragments, separating metals and non-metals therefrom, and obtaining non-metallic blade fragments; Performing secondary crushing treatment on the non-metallic blade fragments; Using a grinding device to crush the secondarily crushed blade fragments to obtain ground blade fragments; Performing air classification on the ground blade fragments into fine materials smaller than 100 mesh and coarse materials larger than 100 mesh, returning the coarse materials to the mill for fine grinding treatment so that all the materials are smaller than 100 mesh, thereby obtaining modified material one in the form of particles and fibers.

3. The recycling method of retired wind turbine blades and incineration ash according to claim 2, characterized in that, The performing secondary crushing treatment on the non-metallic blade fragments specifically includes: Using a double-shaft shear crusher to perform the first crushing treatment on the non-metallic blade fragments so that the size of the discharged material is less than 200 mm; Performing the second crushing on the discharged material so that the size of the secondarily sheared discharged material is less than 50 mm to obtain secondarily crushed blade fragments.

4. The recycling method of retired wind turbine blades and incineration ash according to claim 1, characterized in that The performing preset solidification treatment on the waste incineration ash of a waste power plant to form stable ash sand, and performing crushing treatment on the stable ash sand to obtain modified material two specifically includes: Adding waste incineration fly ash to a preset additive for mixing to form stable ash sand; Curing and shaping the mixed stable ash sand; wherein, the curing time is greater than 7 days; Using a mill to perform crushing treatment on the cured stable ash sand so that the particle size of the crushed stable ash sand is less than 5 mm; Performing air classification treatment on the crushed stable ash sand into coarse particle materials with a particle size greater than 5 mm and fine particle materials with a particle size less than 5 mm, returning the coarse particle materials to the mill for further grinding treatment until the particle size of all the particle materials is less than 5 mm to form stable modified material two.

5. The recycling method of retired wind turbine blades and incineration ash according to claim 4, characterized in that, The adding waste incineration fly ash to a preset additive for mixing to form stable ash sand specifically includes: Performing preliminary treatment on the waste incineration fly ash; Adding a first preset ratio of metakaolin, a second preset ratio of water, and a third preset ratio of glass powder to the preliminarily treated waste incineration fly ash for mixing, and the mixing time is 3 - 5 minutes; the first preset ratio is the weight of waste incineration fly ash: the weight of kaolin = 100:10; the second preset ratio is the weight of waste incineration fly ash: the weight of water = 100:30; the third preset ratio is the weight of waste incineration fly ash: the weight of glass powder = 100:

3.

6. The recycling method of retired wind turbine blades and incineration ash according to claim 1, characterized in that, Adding the modified material one and the modified material two into a cement base material to prepare concrete to obtain a substrate for an energy storage component specifically includes: Add the second modified material at a fourth preset ratio to the base material mixture, pour it into a mixing container, and stir for 5 - 15 minutes; the base material mixture includes a cement base material, water, and a water reducing agent; Add the first modified material at a fifth preset ratio to the mixing container and mix and stir for 5 - 15 minutes to obtain concrete mortar; Pour the concrete mortar into a preset mold for plastic forming and press it, with the pressing time being 12 - 24 hours; Cure the mold product after pressing, with the curing time being 7 - 14 days to form a base material for an energy storage component.

7. The method for recycling retired wind turbine blades and incineration ash according to claim 6, characterized in that, The fourth preset ratio is that the second modified material accounts for 10% of the base material mixture, and the fifth preset ratio is that the first modified material accounts for 10% of the base material mixture.

8. A recycling system for retired wind turbine blades and incineration ash, characterized in that, Applied to the recycling method of retired wind turbine blades and incineration ash as described in any one of claims 1 to 7, the recycling system includes: A cutting module for cutting retired wind turbine blades into blade fragments less than 2 m; A separation module for separating metals and non-metals from the blade fragments; A solidification treatment module for solidifying waste incineration fly ash, and the solidification treatment includes adding a preset additive and mixing; A mixing module for mixing the first modified material and the second modified material according to the cement base material to prepare concrete mortar; A control system for monitoring and controlling the recycling system.

9. The recycling system of retired wind turbine blades and incineration ash according to claim 8, characterized in that, It further includes: A grinding device for secondary crushing of non-metallic blade fragments and fine grinding of the coarse materials returned by air classification to make the discharged materials reach a preset size; A classification module for air classification of the ground blade fragments.

10. The recycling system for retired wind turbine blades and incineration ash according to claim 9, characterized in that, It further includes: A mold pressing module for pouring the concrete mortar into a mold and pressing it into shape; A curing module for curing the mold product after pressing.

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