Regeneration furnaces and waste recycling equipment

Abstract

The present application provides a regeneration treatment furnace and waste regeneration treatment equipment, the regeneration treatment furnace includes a furnace shell, a furnace cavity, an air intake assembly, a first exhaust assembly, a second exhaust assembly and a heating device, the furnace cavity is arranged in the furnace shell, and the furnace cavity is used to accommodate fiber reinforced composite material waste; the air intake assembly is arranged on the furnace shell and communicated with the furnace cavity, and the air intake assembly is used to input superheated steam or hot air; the first exhaust assembly is arranged on the furnace shell and communicated with the furnace cavity; the second exhaust assembly is arranged on the furnace shell and communicated with the furnace cavity, and the second exhaust assembly is used to discharge cracking gas; the heating device is arranged on the furnace shell, and the heating device and / or superheated steam can heat the interior of the furnace cavity. The heat source of the regeneration treatment furnace in the present application includes a heating device and superheated steam. At the same time, the superheated steam can also serve as a protective atmosphere in the waste thermal decomposition process, which can effectively reduce energy consumption and ensure the efficiency of thermal decomposition, so that the fibers can be well collected and the recovery rate is improved.

Description

Technical Field

[0001] The present application relates to the field of waste recycling and processing equipment, and in particular to a recycling furnace and waste recycling and processing equipment. Background Art

[0002] Currently, high-temperature incineration is often used to treat waste. However, existing incinerators consume too much energy during the incineration process, have too high an investment cost, and have a low recovery rate of extractable substances during the incineration process, resulting in a low recycling economy. Summary of the Invention

[0003] In order to solve or at least partially solve the above technical problems, the first aspect of the present application provides a regeneration treatment furnace for fiber reinforced composite material waste, the regeneration treatment furnace comprising:

[0004] furnace shell;

[0005] A furnace cavity is provided in the furnace shell, and the furnace cavity is used to accommodate fiber reinforced composite material waste;

[0006] The air intake assembly is provided on the furnace shell and communicates with the furnace cavity. The air intake assembly is used to input superheated steam or hot air;

[0007] A first exhaust assembly is provided on the furnace shell and communicates with the furnace cavity;

[0008] A second exhaust assembly is provided on the furnace shell and communicated with the furnace chamber, and is used to discharge cracking gas;

[0009] The heating device is arranged on the furnace shell. The heating device and / or superheated steam can heat the interior of the furnace cavity.

[0010] The regeneration processing furnace of the present application includes a furnace shell, a furnace cavity, an air intake assembly, a first exhaust assembly, a second exhaust assembly and a heating device. The furnace cavity is arranged inside the furnace shell. The furnace cavity is used to provide a combustion space. Fiber reinforced composite material waste is placed in the furnace cavity and recycling processing is completed in the furnace cavity.

[0011] The furnace shell is provided with an air intake assembly, which is connected to the furnace cavity. When the regeneration furnace is in different working stages, the air intake assembly can selectively introduce superheated steam or hot air. The regeneration furnace includes a first stage and a second stage. In the first stage, superheated steam is transported into the furnace cavity through the air intake assembly. The superheated steam can be used as a heating heat source and an oxygen-free protective medium to provide oxygen-free protection and heating for the fiber-reinforced composite waste in the furnace cavity, which can completely vaporize the resin matrix in the fiber-reinforced composite waste and achieve separation between the fiber and the matrix resin. In the second stage, the input of superheated steam is stopped and hot air is input into the furnace cavity instead. The input of high-temperature air heat flow completely removes the carbon deposits on the surface of the vaporized fibers, resulting in no carbon deposits on the recycled fibers, a clean surface, and a strength of the recycled carbon fibers that can reach over 90% of that of the original carbon fibers.

[0012] The furnace shell is also equipped with a first exhaust assembly and a second exhaust assembly. The first exhaust assembly is used to maintain pressure balance within the furnace chamber and ensure the circulation of gases other than pyrolysis gas within the chamber. The second exhaust assembly is used to discharge pyrolysis gas, which is a flammable, small-molecule organic gas produced by the decomposition of the resin matrix in fiber-reinforced composite waste. Pyrolysis gas is a toxic gas. Of course, the exhaust of pyrolysis gas through the second exhaust assembly here refers to the discharge of pyrolysis gas from the furnace chamber. The pyrolysis gas is discharged to a predetermined location, such as a thermal energy conversion furnace, where it can be converted into clean, high-temperature hot gas, which can be used to provide heat for a regeneration furnace. The pyrolysis gas is not discharged into the external environment, preventing environmental pollution. In other words, the toxic gases produced by the combustion and decomposition of fiber-reinforced composite waste within the furnace chamber are channeled separately from the first exhaust assembly, which is used to maintain pressure balance within the chamber. This facilitates precise control and simplifies the subsequent disposal of the toxic gas.

[0013] In this application, a heating device is also provided on the furnace shell of the regeneration furnace, which can also heat the interior of the furnace cavity. The superheated steam can not only heat the interior of the furnace cavity, but also serve as a protective atmosphere during the thermal decomposition process of fiber-reinforced composite material waste, which can effectively reduce energy consumption and ensure the efficiency of thermal decomposition, so that the fibers can be well collected and the recovery rate can be improved.

[0014] It is worth noting that the generation of superheated steam can rely on a superheated steam generator, and the heat source converted from the cracked gas discharged from the second exhaust assembly can be used to heat the superheated steam generator to facilitate the generation of superheated steam.

[0015] Optionally, the regeneration treatment furnace further includes a control component, which is arranged on the furnace shell and is used to regulate the internal temperature of the furnace cavity and / or the internal pressure of the furnace cavity.

[0016] Optionally, the regeneration processing furnace also includes an inner shell, which is arranged inside the furnace shell, the inner shell has a furnace cavity, and a heating chamber that is not connected to the furnace cavity is provided between the inner shell and the furnace shell, and the heating device is located in the heating chamber; the control component includes a first temperature sensor and a second temperature sensor, the first temperature sensor is used to detect the temperature in the furnace cavity, and the second temperature sensor is used to detect the temperature in the heating chamber.

[0017] Optionally, the regeneration treatment furnace further includes a heat supplement air inlet, which is provided on the furnace shell and communicated with the heating chamber.

[0018] Optionally, one side of the furnace shell has a material opening; the regeneration treatment furnace also includes: a furnace door and a seal, the furnace door is movably provided on the furnace shell to open and close the material opening; the seal is provided on the furnace door, and when the furnace door closes the material opening, the seal is clamped between the furnace door and the furnace shell.

[0019] Optionally, the regeneration furnace further comprises a cooling assembly, which is provided on one side of the sealing member.

[0020] Optionally, the regeneration furnace further includes a thermal insulation layer, which is provided between the inner shell and the furnace shell.

[0021] Optionally, the air intake assembly and the second exhaust assembly are arranged on a side of the furnace shell away from the furnace door, and the first exhaust assembly is arranged on the top of the furnace shell.

[0022] Optionally, the heating device includes a plurality of heating parts, and the plurality of heating parts are evenly arranged around the furnace cavity.

[0023] A second aspect of the present application provides a waste recycling and processing device, comprising the recycling and processing furnace described in any one of the above technical solutions.

[0024] The waste recycling and processing equipment in this application includes the recycling and processing furnace provided in any of the above technical solutions, and thus has all the beneficial effects of the recycling and processing furnace, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the embodiments of the present application, the following briefly introduces the relevant drawings. It should be understood that the drawings described below are only used to illustrate some embodiments of the present application, and those skilled in the art can also obtain many other technical features and connection relationships not mentioned herein based on these drawings.

[0026] Figure 1 This is a structural schematic diagram of a regeneration treatment furnace provided in this application.

[0027] The reference numerals and names in the figures are as follows:

[0028] 10. Furnace shell; 11. Furnace cavity; 12. Inner shell; 13. Heating chamber;

[0029] 14. Air intake assembly;

[0030] 15. First exhaust assembly;

[0031] 16. Second exhaust assembly;

[0032] 17. Heating device;

[0033] 18. Control components;

[0034] 19. Furnace door;

[0035] 20. Insulation layer;

[0036] 21. Material cart; 22. Fiber-reinforced composite material waste. DETAILED DESCRIPTION

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

[0038] The inventors of this application have found that high-temperature incineration is often used in the prior art to treat waste. However, existing incinerators consume too much energy during the incineration process, have too high an investment cost, and have a low recovery rate of extractable substances during the incineration process, resulting in too low a recovery economy.

[0039] In view of this, refer to Figure 1 The regeneration furnace provided in this application, the heating device 17 and the superheated steam can both be used as heat sources. At the same time, the superheated steam can also be used as a protective atmosphere during the thermal decomposition process of the fiber-reinforced composite material waste 22, which can effectively reduce energy consumption and ensure the efficiency of thermal decomposition, so that the fibers can be well collected and the recovery rate can be improved.

[0040] Implementation Method 1

[0041] An embodiment of the first aspect of the present application provides a regeneration processing furnace for fiber reinforced composite material waste 22, the regeneration processing furnace includes a furnace shell 10, a furnace cavity 11, an air intake assembly 14, a first exhaust assembly 15, a second exhaust assembly 16 and a heating device 17, the furnace cavity 11 is arranged in the furnace shell 10, and the furnace cavity 11 is used to accommodate the fiber reinforced composite material waste 22; the air intake assembly 14 is arranged on the furnace shell 10 and communicated with the furnace cavity 11, and the air intake assembly 14 is used to input superheated steam or hot air; the first exhaust assembly 15 is arranged on the furnace shell 10 and communicated with the furnace cavity 11; the second exhaust assembly 16 is arranged on the furnace shell 10 and communicated with the furnace cavity 11, and the second exhaust assembly 16 is used to discharge cracking gas; the heating device 17 is arranged on the furnace shell 10, and the heating device 17 and / or superheated steam can heat the interior of the furnace cavity 11.

[0042] The regeneration processing furnace of the present application includes a furnace shell 10, a furnace cavity 11, an air intake assembly 14, a first exhaust assembly 15, a second exhaust assembly 16 and a heating device 17. The furnace cavity 11 is arranged inside the furnace shell 10. The furnace cavity 11 is used to provide a combustion space. The fiber reinforced composite material waste 22 is placed in the furnace cavity 11, and the recycling process is completed in the furnace cavity 11.

[0043] The furnace shell 10 is provided with an air intake assembly 14, which is in communication with the furnace chamber 11. Depending on the operating stage of the regeneration furnace, the air intake assembly 14 can selectively introduce superheated steam or hot air. The regeneration furnace comprises a first stage and a second stage. During the first stage, superheated steam is delivered to the furnace chamber 11 via the air intake assembly 14. The superheated steam serves as a heat source and an oxygen-free protective medium, providing oxygen-free protection and heating for the fiber-reinforced composite waste 22 in the furnace chamber 11. This completely vaporizes the resin matrix in the fiber-reinforced composite waste 22, achieving separation between the fibers and the matrix resin. During the second stage, the superheated steam supply is stopped and hot air is introduced into the furnace chamber 11. The high-temperature air heat flow completely removes carbon deposits from the surface of the vaporized fibers, resulting in a clean, carbon-free surface on the recycled fibers. The strength of the recovered recycled carbon fibers can reach over 90% of that of virgin carbon fibers. It is worth noting that, in the second stage, the source of hot air can be provided by a separate hot air conveying device or by a heat energy conversion combustion furnace.

[0044] The furnace shell 10 is also equipped with a first exhaust assembly 15 and a second exhaust assembly 16. The first exhaust assembly 15 is used to maintain pressure balance within the furnace chamber 11 and ensure the circulation of gases other than pyrolysis gas within the furnace chamber 11. The second exhaust assembly 16 is used to discharge pyrolysis gas. Pyrolysis gas refers to the combustible organic small molecule gas produced by the decomposition of the resin matrix in the fiber-reinforced composite material waste 22. Pyrolysis gas is a toxic gas. Of course, the discharge of pyrolysis gas through the second exhaust assembly 16 here refers to the discharge from the furnace chamber 11. The pyrolysis gas is discharged to a predetermined location, such as a thermal energy conversion furnace, where it can be converted into clean, high-temperature hot gas, which can be used to provide heat for the regeneration furnace. The pyrolysis gas is not discharged into the external environment, thus preventing environmental pollution. In other words, the toxic gases generated by the combustion and decomposition of the fiber-reinforced composite material waste 22 within the furnace chamber 11 are directed out separately from the first exhaust assembly 15, which is used to maintain pressure balance within the cranial cavity. This facilitates precise control and simplifies the subsequent treatment of the toxic gases.

[0045] In the present application, a heating device 17 is also provided on the furnace shell 10 of the regeneration treatment furnace, and the heating device 17 can also heat the interior of the furnace cavity 11. The superheated steam can not only heat the interior of the furnace cavity 11, but also serve as a protective atmosphere during the thermal decomposition process of the fiber-reinforced composite material waste 22, which can effectively reduce energy consumption and ensure the efficiency of thermal decomposition, so that the fibers can be well collected and the recovery rate can be improved.

[0046] It is worth noting that the generation of superheated steam can rely on a superheated steam generator, and the heat source converted from the cracked gas discharged from the second exhaust assembly 16 can be used to heat the superheated steam generator to facilitate the generation of superheated steam.

[0047] Optionally, the regeneration furnace further includes a control component 18 , which is disposed on the furnace shell 10 . The control component 18 is used to regulate the internal temperature of the furnace cavity 11 and / or the internal pressure of the furnace cavity 11 .

[0048] In an embodiment of the present application, the regeneration processing furnace also includes a control component 18, which is arranged on the furnace shell 10. The control component 18 is used to regulate the internal temperature of the furnace cavity 11, thereby ensuring that the fiber-reinforced composite material waste 22 located inside the furnace cavity 11 can be separated from the resin matrix at a suitable temperature, thereby realizing the recovery of regenerated fibers.

[0049] Specifically, in the first stage, when the regeneration furnace is used for fiber-reinforced composite material waste 22, the superheated steam introduced into the furnace chamber 11 of the regeneration furnace is superheated steam at 400°C to 700°C at atmospheric pressure with a slight oxygen content. The superheated steam provides oxygen-free protection and heats the carbon fiber-reinforced composite material for 1 to 6 hours, thereby completely vaporizing the resin matrix in the fiber-reinforced composite material waste 22 and achieving separation of the fiber filaments and the resin matrix in the carbon fiber-reinforced composite material waste 22. The fibers include carbon fibers.

[0050] In the second stage, the temperature in the furnace chamber 11 can be controlled at 400°C to 500°C through the control component 18, and hot compressed air is input. The high-temperature air heat flow can completely remove the carbon deposits on the surface of the gasified fiber-reinforced composite material waste 22. The recycled regenerated carbon fiber has no carbon deposit residue and a clean surface. The strength of the recycled regenerated carbon fiber can reach more than 90% of the original carbon fiber.

[0051] That is to say, during the operation of the regeneration furnace, the temperature and pressure inside it are not constant, but are adjusted according to different stages. The control component 18 can ensure that the temperature and pressure inside the furnace chamber 11 are within a reasonable range, so that the recovery efficiency of carbon fibers in fiber-reinforced composite waste is greatly improved.

[0052] Optionally, the regeneration treatment furnace also includes an inner shell 12, which is arranged inside the furnace shell 10, and the inner shell 12 has a furnace cavity 11. There is a heating chamber 13 between the inner shell 12 and the furnace shell 10 that is not connected to the furnace cavity 11, and the heating device 17 is located in the heating chamber 13; the control component 18 includes a first temperature sensor and a second temperature sensor, the first temperature sensor is used to detect the temperature in the furnace cavity 11, and the second temperature sensor is used to detect the temperature in the heating chamber 13.

[0053] In an embodiment of the present application, the regeneration processing furnace also includes an inner shell 12, which is arranged inside the furnace shell 10. It can be understood that the inner shell 12 is inserted into the furnace shell 10, and the inner shell 12 can form a furnace cavity 11, that is, the fiber reinforced composite material waste 22 is placed inside the inner shell 12, and there is a heating chamber 13 between the inner shell 12 and the furnace shell 10, that is, between the outer wall of the inner shell 12 and the inner wall of the furnace shell 10. The heating chamber 13 and the furnace cavity 11 are two relatively independent spaces, which are isolated from each other by the inner shell 12. The heating device 17 is arranged in the heating chamber 13, and the heating device 17 generates heat in the heating chamber 13. The heat will be transferred to the inside of the furnace cavity 11 through the inner shell 12, thereby achieving the purpose of heating the fiber reinforced composite material waste 22 inside the furnace cavity 11.

[0054] Among them, the control component 18 includes a first temperature sensor and a second temperature sensor. The first temperature sensor is used to detect the temperature in the furnace cavity 11. Specifically, the number of the first temperature sensors is 2, and the two first temperature sensors are respectively arranged on both sides of the inner shell 12. The second temperature sensor is used to detect the temperature of the heating chamber 13. Specifically, the number of the second temperature sensors is 2, and the two second temperature sensors are respectively arranged on the front and back sides of the heating chamber 13. In other words, the total number of temperature sensors is 4. Since the temperature in the furnace cavity 11 is also controlled by the heat provided by the heating chamber 13, the temperatures of the furnace cavity 11 and the heating chamber 13 are interrelated. In order to achieve precise control of the temperature in the furnace cavity 11, the first temperature sensor and the second temperature sensor are used to detect the temperatures in the furnace cavity 11 and the heating chamber 13, respectively, to maximize the elimination of temperature inertia during the heating process, thereby achieving uniform temperature distribution in the furnace cavity 11.

[0055] Optionally, the regeneration treatment furnace further includes a supplementary heat air inlet, which is provided on the furnace shell 10 and communicates with the heating chamber 13 .

[0056] In an embodiment of the present application, carbon fiber reinforced composite material waste 22 is burned in the furnace cavity 11, and the generated cracking gas is discharged into the thermal energy conversion combustion furnace through the second exhaust component 16. The cracking gas is fully burned in the thermal energy conversion combustion furnace and is converted into very clean high-temperature hot gas. The clean high-temperature hot gas can enter the heating chamber 13 through the heat supplementary air inlet, thereby heating the interior of the furnace cavity 11, so that the heat energy generated by the cracking gas can be recycled, effectively reducing costs, and complying with the development trend of green and environmental protection.

[0057] Implementation Method 2

[0058] The inventors of the present application have discovered that when the sealing performance of the furnace cavity 11 and the sealing performance of the heating chamber 13 cannot be guaranteed, not only will the fiber-reinforced composite material waste 22 in the furnace cavity 11 be unable to be effectively thermally decomposed, but the fiber-reinforced composite material waste 22 generated during the cracking process may also cause waste leakage and environmental pollution.

[0059] To this end, the second embodiment of the present application proposes a regeneration processing furnace, wherein a material port is provided on one side of the furnace shell 10; the regeneration processing furnace also includes a furnace door 19 and a sealing member, wherein the furnace door 19 is movably provided on the furnace shell 10 to open and close the material port; the sealing member is provided on the furnace door 19, and when the furnace door 19 closes the material port, the sealing member is clamped between the furnace door 19 and the furnace shell 10.

[0060] In an embodiment of the present application, a material port is provided on one side of the furnace shell 10, and the fiber reinforced composite waste 22 can be transported from the material port to the furnace chamber 11 by a material cart 21. The regeneration furnace further includes a furnace door 19 and a seal. The furnace door 19 is movably provided on the furnace shell 10, and the furnace door 19 moves relative to the furnace shell 10 to realize the opening or closing of the material port. Among them, the seal is provided on the furnace door 19. When the furnace door 19 closes the material port, the seal is clamped between the furnace door 19 and the furnace shell 10. The seal can effectively seal the gap between the furnace door 19 and the furnace shell 10, so that during the operation of the regeneration furnace, the gas in the cracking process will not leak outward along one side of the furnace door 19, thereby ensuring the safe use performance of the regeneration furnace.

[0061] Optionally, the seal is a locking ring type sealing structure with excellent sealing performance.

[0062] Optionally, the regeneration furnace further includes a cooling component, which is disposed on one side of the seal. The cooling component can cool the seal to avoid damage to the seal due to excessive temperature.

[0063] Optionally, the cooling component is a water cooling component, which is low-cost and easy to implement.

[0064] It is worth noting that when the furnace door 19 is closed, the hydraulic system can be used to tightly press the furnace door 19 and the seal against the furnace shell 10 and the inner shell 12, making it difficult for the gas in the furnace cavity 11 to leak out from the side of the furnace door 19.

[0065] Implementation Method 3

[0066] The inventors of this application have found that when the thermal insulation performance of the regeneration furnace is not good enough, the heat in the furnace cavity 11 will diffuse outward from the furnace shell 10. This part of the heat cannot act on the effective cracking of the fiber reinforced composite material waste 22, resulting in unnecessary heat loss.

[0067] To this end, the third embodiment of the present application proposes a regeneration treatment furnace, which further includes a thermal insulation layer 20 , which is arranged between the inner shell 12 and the furnace shell 10 .

[0068] In an embodiment of the present application, the insulation layer 20 is arranged on the inner wall of the furnace shell 10, and the fiber-reinforced composite material waste 22 will be fully burned in the combustion zone formed by the insulation layer 20. The heat generated cannot be easily transmitted to the external environment through the insulation layer 20, so that the fiber-reinforced composite material waste 22 can be effectively cracked in a stable temperature environment, so that the resin matrix in the fiber-reinforced composite material waste 22 can be effectively gasified to generate cracking gas, which is beneficial to the extraction of carbon fiber.

[0069] Optionally, the air intake assembly 14 and the second exhaust assembly 16 are arranged on a side of the furnace shell 10 away from the furnace door 19 , and the first exhaust assembly 15 is arranged on the top of the furnace shell 10 .

[0070] In an embodiment of the present application, the air intake assembly 14 and the second exhaust assembly 16 are arranged on the side of the furnace shell 10 away from the furnace door 19, that is, the air intake assembly 14 and the second exhaust assembly 16 can be arranged on the back side of the furnace shell 10, and the first exhaust assembly 15 is arranged on the top of the furnace shell 10, so that the air intake assembly 14, the second exhaust assembly 16 and the first exhaust assembly 15 can be reasonably distributed on the furnace shell 10 to avoid causing too obvious impact on the structural strength.

[0071] Optionally, the heating device 17 includes a plurality of heating parts, and the plurality of heating parts are evenly arranged around the furnace cavity 11 .

[0072] In an embodiment of the present application, the heating device 17 includes a plurality of heating units, optionally including electric heating tubes. The plurality of heating units are evenly arranged around the furnace cavity 11, thereby forming an effective heating area that can be vertically distributed from top to bottom on both sides of the outer side of the inner shell 12 forming the furnace cavity 11, thereby providing more uniform heat to the interior of the furnace cavity 11.

[0073] It is worth noting that the heat source for heating the fiber reinforced composite material waste 22 inside the furnace cavity 11 can include superheated steam, the heating device 17 and the clean high-temperature hot air entering the heating chamber 13 from the supplementary heat air inlet. When the fiber reinforced composite material waste 22 in the furnace cavity 11 is in the initial stage of the reaction and the cracking gas has not yet been generated, or the flow rate of the cracking gas is relatively small, the heat source is mainly provided by the heating device 17. When the cracking gas is generated and converted into clean high-temperature hot gas through the thermal energy conversion furnace, the high-temperature hot gas is transported to the heating chamber 13, and the high-temperature hot gas serves as the main heat source. At this time, the heating device 17 can be used as an auxiliary heat source. The heating device 17 and the high-temperature hot gas are used simultaneously to provide sufficient heat for the thermal cracking of the fiber reinforced composite material waste 22.

[0074] Implementation Method 4

[0075] A second aspect of the present application provides a waste recycling and processing device, comprising the recycling and processing furnace described in any one of the above embodiments.

[0076] The waste recycling and processing equipment in the present application includes the recycling and processing furnace provided in any of the above embodiments, and thus has all the beneficial effects of the recycling and processing furnace, which will not be described in detail here.

[0077] Optionally, the waste recycling equipment is used for recycling the fiber reinforced composite material waste 22 .

[0078] High-temperature superheated steam generated by the superheated steam generator enters the furnace chamber 11 through the air intake assembly 14 via a pipe, heating and protecting the fiber-reinforced composite waste 22 placed in the furnace chamber 11 from oxygen. As the temperature rises, the resin matrix in the fiber-reinforced composite waste 22 gradually vaporizes and decomposes, separating the carbon fiber filaments from the resin matrix in the fiber-reinforced composite waste 22. The cracked gas from the decomposition of the resin matrix, a mixture of flammable organic small molecule gases and superheated steam, is discharged into the thermal energy conversion combustion furnace through the second exhaust assembly 16.

[0079] After the cracking gas is fully burned in the thermal energy conversion furnace, a high-temperature clean heat source is generated. The high-temperature clean heat source can be transported to the heating chamber 13 of the regeneration furnace or to the superheated steam generator to achieve the recycling of heat energy.

[0080] It's worth noting that the regeneration furnace operates at atmospheric or slightly negative pressure, creating an oxygen-free / oxygen-depleted state. This ensures that the organic waste gas generated during the regeneration process does not pose a safety hazard due to high temperatures. Furthermore, it can batch process fiber-reinforced composite waste of varying specifications. Using a clean heat source provided by the thermal energy conversion combustion circuit for auxiliary heating, the process offers low operating costs and produces clean, carbon-free regenerated fiber with a strength exceeding 90% of that of virgin carbon fiber.

[0081] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A regeneration furnace, characterized in that: For fiber-reinforced composite material waste (22), the regeneration treatment furnace comprises: Furnace shell (10); A furnace cavity (11) is provided in the furnace shell (10), and the furnace cavity (11) is used to accommodate the fiber-reinforced composite material waste (22); an air inlet assembly (14), provided on the furnace shell (10) and in communication with the furnace chamber (11), for inputting superheated steam as a heating source and oxygen-free protective medium into the furnace chamber (11) in the first processing stage, and for inputting hot air into the furnace chamber (11) in the second processing stage; a first exhaust assembly (15), provided on the furnace shell (10) and in communication with the furnace chamber (11), for circulating the superheated steam or the hot air in the first and second process stages to maintain pressure balance in the furnace chamber (11); a second exhaust assembly (16), provided on the furnace shell (10) and in communication with the furnace chamber (11), independent of the first exhaust assembly (15), and used to discharge cracking gas generated by decomposition of the resin matrix in the fiber-reinforced composite material waste (22) during the first treatment stage; A heating device (17) is provided on the furnace shell (10); the heating device (17) and / or superheated steam can heat the interior of the furnace cavity (11).

2. The regeneration furnace according to claim 1, characterized in that: The regeneration furnace also includes: A control component (18) is provided on the furnace shell (10), and the control component (18) is used to regulate the internal temperature of the furnace cavity (11) and / or the internal pressure in the furnace cavity (11).

3. The regeneration furnace according to claim 2, characterized in that: The regeneration furnace also includes: an inner shell (12) disposed inside the furnace shell (10), the inner shell (12) having the furnace cavity (11), a heating chamber (13) not in communication with the furnace cavity (11) being provided between the inner shell (12) and the furnace shell (10), and the heating device (17) being located in the heating chamber (13); The control component (18) comprises a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is used to detect the temperature in the furnace cavity (11), and the second temperature sensor is used to detect the temperature in the heating chamber (13).

4. The regeneration furnace according to claim 3, characterized in that: The regeneration furnace also includes: A heat supplement air inlet is provided on the furnace shell (10) and is communicated with the heating chamber (13).

5. The regeneration furnace according to claim 3, characterized in that: One side of the furnace shell (10) is provided with a material opening; The regeneration furnace also includes: a furnace door (19) movably provided on the furnace shell (10) for opening and closing the material inlet; A sealing member is provided on the furnace door (19). When the furnace door (19) closes the material port, the sealing member is sandwiched between the furnace door (19) and the furnace shell (10).

6. The regeneration furnace according to claim 5, characterized in that: The regeneration furnace also includes: The cooling component is arranged on one side of the sealing component.

7. The regeneration furnace according to claim 5, characterized in that: The regeneration furnace also includes: A heat-insulating layer (20) is provided between the inner shell (12) and the furnace shell (10).

8. The regeneration furnace according to any one of claims 5 to 7, characterized in that: The air intake assembly (14) and the second exhaust assembly (16) are arranged on a side of the furnace shell (10) away from the furnace door (19), and the first exhaust assembly (15) is arranged on the top of the furnace shell (10).

9. The regeneration furnace according to any one of claims 1 to 7, characterized in that: The heating device (17) comprises a plurality of heating parts, and the plurality of heating parts are evenly arranged around the furnace cavity (11).

10. A waste recycling and processing equipment, characterized in that: include: The regeneration furnace according to any one of claims 1 to 9.

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