Continuous recycling system for fiber reinforced composite materials

Abstract

The present application provides a continuous recycling system for fiber reinforced composite materials, comprising: a conveyor belt pyrolysis furnace, wherein the conveyor belt of the conveyor belt pyrolysis furnace is connected to a feeding device, and an air curtain device is provided at the inlet and outlet of the conveyor belt, wherein the air curtain device is used to release superheated steam to generate an air curtain and heat the fiber reinforced composite material; a superheated steam generator, connected to the air curtain device of the conveyor belt pyrolysis furnace; a heat conversion combustion furnace, connected to the cracking gas outlet of the conveyor belt pyrolysis furnace, and used to ignite the cracking gas from the conveyor belt pyrolysis furnace; the heat conversion combustion furnace is also connected to the superheated steam generator; a conveyor belt decarbonization furnace, connected to the conveyor belt pyrolysis furnace. The continuous recycling system for fiber reinforced composite materials provided in the present application saves the cost of fiber recycling, realizes non-damage recycling of fibers, and the recycling process has the characteristics of zero tail gas emission and zero pollution.

Description

Technical Field

[0001] The present application relates to the field of waste material recycling, and in particular to a continuous recycling system for fiber-reinforced composite materials. Background Art

[0002] Fiber-reinforced composite materials have the advantages of light weight, high strength, high modulus, and corrosion resistance. They are widely used in aerospace, sports and leisure, automobiles, construction, and bridge reinforcement. In 2018, my country's total output of composite materials was 4.3 million tons, and it is predicted that it will reach about 5.56 million tons in 2023, surpassing Germany and Japan to rank second in the world.

[0003] At present, fiber-reinforced composite materials in my country are still mainly based on thermosetting resins, accounting for more than 90% of the market. However, thermosetting resin-based composite materials cannot be degraded under natural conditions. Therefore, the environmental pollution and waste of resources caused by discarded fiber-reinforced composite materials have become serious environmental, social and economic problems in my country.

[0004] In 2020, the global waste fiber reinforced composite products reached 50,000 tons, of which more than 25,000 tons were carbon fiber, which is worth more than RMB 5 billion at an average price of RMB 200 / kg. In the future, China's four major industries - large aircraft projects, offshore wind power generation, lightweight automobile development and high-speed railways - will undoubtedly drive the strong growth of carbon fiber demand. However, the general life of aircraft parts is 25-28 years, wind turbine blades are 20-25 years, and automobile parts are 10-15 years. After the life of these products ends, their recycling and reuse will become a very important issue. At present, the recycling of fiber reinforced composite materials is often difficult to achieve continuous recovery. There is still a lack of environmental protection equipment and technology for large-scale, continuous, low-cost and low-energy recovery of fiber reinforced composite materials using pyrolysis. Summary of the invention

[0005] In order to solve or at least partially solve the above technical problems, the present application provides:

[0006] K1. A continuous recycling system for fiber-reinforced composite materials, used for fiber-reinforced composite material waste. Specifically, a continuous recycling system for fiber-reinforced composite materials, comprising: a conveyor-type pyrolysis furnace, wherein the conveyor belt of the conveyor-type pyrolysis furnace is connected to a feeding device, and an air curtain device is provided at the inlet and outlet of the conveyor belt, wherein the air curtain device is used to release superheated steam to generate an air curtain and heat the fiber-reinforced composite material; a superheated steam generator, connected to the air curtain device of the conveyor-type pyrolysis furnace, and used to transport superheated steam to the air curtain device; a heat energy conversion combustion furnace, connected to the cracking gas outlet of the conveyor-type pyrolysis furnace, and used to ignite the cracking gas from the conveyor-type pyrolysis furnace; the heat energy conversion combustion furnace is also connected to the superheated steam generator, and used to feed the heat source gas after combustion into the superheated steam generator, so that the superheated steam generator produces the superheated steam; a conveyor-type decarbonization furnace, connected to the conveyor-type pyrolysis furnace, and used to decarbonize the fiber-reinforced composite material after pyrolysis by the conveyor-type pyrolysis furnace, and output fiber precursors.

[0007] K2. A fiber-reinforced composite material continuous recycling system according to K1, wherein the thermal energy conversion combustion furnace is also connected to the pyrolysis furnace body of the conveyor belt pyrolysis furnace to transport heat source gas into the conveyor belt pyrolysis furnace as supplementary heating.

[0008] K3. A continuous recycling system for fiber-reinforced composite materials according to K1, wherein the decarbonization exhaust outlet of the conveyor-type decarbonization furnace is connected to the thermal energy conversion combustion furnace for conveying decarbonization gas to the thermal energy conversion combustion furnace to produce the heat source gas.

[0009] K4. The fiber-reinforced composite material continuous recycling system according to K1, further comprising: an oxidizing gas conveying device, wherein the oxidizing gas conveying device is respectively connected to the superheated steam generator and the conveyor-type carbon removal furnace; the superheated steam generator conveys the used heat source gas to the oxidizing gas conveying device, and then conveys the used heat source gas to the conveyor-type carbon removal furnace via the oxidizing gas conveying device for carbon removal operation.

[0010] K5. A fiber-reinforced composite material continuous recovery system according to K4, wherein the oxidizing gas conveying device further comprises: a shell, the shell comprising a heat exchange chamber; a first air inlet and a first air outlet, respectively provided on the shell and connected to the heat exchange chamber, the first air inlet being used to input the oxidizing gas to be heated; a second air inlet and a second air outlet, respectively provided on the shell and connected to the heat exchange chamber, the second air inlet being used to input heat source gas.

[0011] K6. A fiber-reinforced composite material continuous recycling system according to K5, wherein the first air inlet and the first air outlet are respectively arranged on two adjacent walls of the shell; and / or the second air inlet and the second air outlet are respectively arranged on two adjacent walls of the shell.

[0012] K7. A fiber-reinforced composite material continuous recycling system according to K6, wherein the shell comprises: a top wall and a bottom wall, arranged in the up-down direction, the second air inlet is arranged on the bottom wall, and the first air outlet is arranged on the top wall; a plurality of side walls, arranged between the top wall and the bottom wall, the first air inlet is arranged on one of the plurality of side walls, and the second air outlet is arranged on another one of the plurality of side walls.

[0013] K8. A fiber-reinforced composite material continuous recycling system according to K7, wherein the first air inlet and the second air outlet are coaxially arranged; and / or the second air inlet and the first air outlet are coaxially arranged; and the flow cross-sectional area of ​​either the first air inlet or the first air outlet is smaller than the flow cross-sectional area of ​​either the second air inlet or the second air outlet.

[0014] K9. A fiber-reinforced composite material continuous recovery system according to K6, wherein the oxidizing gas delivery device further comprises: a first air inlet pipe, arranged on the shell and connected to the heat exchange chamber through the first air inlet port; and / or, a first air outlet pipe, arranged on the shell and connected to the heat exchange chamber through the first air outlet port; and / or, a second air inlet pipe, arranged on the shell and connected to the heat exchange chamber through the second air inlet port; and / or, a second air outlet pipe, arranged on the shell and connected to the heat exchange chamber through the second air outlet port; a fourth thermal insulation layer, arranged on the shell and located in the heat exchange chamber; a support member, arranged on the bottom wall of the shell.

[0015] K10. A continuous recycling system for fiber reinforced composite materials according to any one of K1 to K9, wherein the conveyor-type pyrolysis furnace comprises: a pyrolysis furnace body and a conveyor belt passing through the pyrolysis furnace body; a cracking gas extraction device, arranged on the pyrolysis furnace body, for extracting cracking gas generated by pyrolysis of the fiber reinforced composite material in the pyrolysis furnace body; and an air curtain device, arranged at the inlet and outlet of the conveyor belt, the air curtain device being used to release superheated steam to generate an air curtain and heat the fiber reinforced composite material.

[0016] K11. A continuous recycling system for fiber-reinforced composite materials according to K10, wherein the conveyor belt comprises: a feed side, a discharge side and a central conveying part, the height of the part of the central conveying part that supports the material is greater than that of the part of the feed side; a pyrolysis feed pipe and a pyrolysis discharge pipe, which are respectively connected to the pyrolysis furnace body; the conveyor belt enters the pyrolysis furnace body through the pyrolysis feed pipe, and then extends out of the pyrolysis furnace body through the pyrolysis discharge pipe; the pyrolysis feed pipe has a first angle with the horizontal plane, and the first angle is in the range of 10° to 35°.

[0017] K12. A fiber reinforced composite material continuous recycling system according to K11, wherein the air curtain device comprises: an air intake air curtain mechanism, which is arranged in the pyrolysis feed pipe; the air intake air curtain mechanism comprises a plurality of air curtain nozzles, which release superheated steam in the direction of the conveyor belt to generate an air curtain and heat the fiber reinforced composite material; the air curtain nozzles are spaced apart into at least two rows along the movement direction of the conveyor belt, and the jet directions of the air curtain nozzles in two adjacent rows are staggered with each other.

[0018] K13. A continuous recovery system for fiber-reinforced composite materials according to K12, further comprising a cracking pipeline arranged in the pyrolysis furnace body; the two ends of the cracking pipeline are respectively connected to the pyrolysis feed pipeline and the pyrolysis discharge pipeline; the conveyor belt passes through the cracking pipeline, and the fiber-reinforced composite material is cracked in the cracking pipeline; a heating chamber is provided between the cracking pipeline and the pyrolysis furnace body, and the cracking gas exhaust device passes through the heating chamber and is connected to the cracking pipeline; an auxiliary heating device is provided in the heating chamber; the auxiliary heating device comprises: a heat source inlet, passing through the outer wall of the pyrolysis furnace body and connected to the heating chamber, for introducing high-temperature gas into the heating chamber to heat the cracking pipeline; a heat source outlet, passing through the outer wall of the pyrolysis furnace body and connected to the heating chamber, for discharging the high-temperature gas; an electric heating component, arranged on the inner wall of the pyrolysis furnace body and capable of heating at least part of the cracking pipeline; a third temperature sensor, for measuring the temperature in the cracking pipeline, the third temperature sensor being communicatively connected to the electric heating component.

[0019] K14. A continuous recovery system for fiber-reinforced composite materials according to K13, wherein the cracking gas extraction device comprises: a cracking gas outlet, which is arranged on the pyrolysis furnace body and connected to the cracking pipeline for releasing cracking gas; a pressure controller, which is connected to the cracking gas outlet and adjusts the gas pressure in the cracking pipeline by controlling the gas flow rate of the cracking gas outlet; the pressure controller comprises: a pyrolysis pressure sensor, which is arranged in the cracking pipeline and detects the pressure in the cracking pipeline; a pyrolysis fan, which is communicatively connected to the pyrolysis pressure sensor, and the pyrolysis fan is arranged facing the cracking gas outlet; a pressure relief pipeline, which is connected to the cracking gas outlet, the pyrolysis fan is installed in the pressure relief pipeline, and the blowing direction of the pyrolysis fan is toward the direction of the cracking gas outlet; a pyrolysis one-way valve, which is arranged in the pressure relief pipeline.

[0020] K15. A continuous recycling system for fiber reinforced composite materials according to any one of K1 to K9, wherein the conveyor-type carbon removal furnace comprises: a carbon removal furnace body and a conveyor belt device arranged through the carbon removal furnace body; a temperature control device, connected to the carbon removal furnace body, and adjusting the temperature of the carbon removal furnace body; an oxidizing gas conveying device, comprising a plurality of carbon removal gas supply pipes connected to the carbon removal furnace body, for introducing oxidizing gas into the carbon removal furnace body; an exhaust device, arranged at the top of the carbon removal furnace body, for exhausting the gas in the carbon removal furnace body, and the exhaust device keeps the carbon removal furnace body in a negative pressure state.

[0021] K16. A continuous recycling system for fiber reinforced composite materials according to K15, wherein the conveyor belt device comprises: a mesh belt having a plurality of air holes; a carbon removal drive mechanism for driving the mesh belt to move along the length direction of the carbon removal furnace body; the carbon removal air supply pipeline is connected to the bottom of the mesh belt and transports the oxidizing gas in the direction of the mesh belt; the carbon removal air supply pipeline comprises: a plurality of main pipelines, the main pipelines are connected to the carbon removal furnace body from the outside of the carbon removal furnace body; at least two branch pipelines, the branch pipelines are arranged at intervals along the length direction or width direction of the mesh belt, and the branch pipelines are provided with a plurality of air jets distributed along their own length direction.

[0022] K17. A continuous recycling system for fiber reinforced composite materials according to K16, wherein the temperature control device comprises: a heating chamber, wherein the heating chamber is arranged on the inner wall of the decarbonization furnace body, wherein a first electric heating device is arranged in the heating chamber, and the first electric heating device is used to heat the inner space of the decarbonization furnace body; the main pipeline passes through the heating chamber and is heated by the heating chamber, and at least a part of the main pipeline is folded into an S shape in the heating chamber; a first temperature sensor is arranged in the heating chamber and is communicatively connected to the first electric heating device; a second electric heating device is arranged in the decarbonization furnace body; and a second temperature sensor is arranged in the decarbonization furnace body and is communicatively connected to the second electric heating device.

[0023] K18. The fiber reinforced composite material continuous recycling system according to K17, further comprising: a decarbonization pressure sensor, which is arranged in the decarbonization furnace body and detects the pressure in the furnace, the decarbonization pressure sensor is communicatively connected with the exhaust device and / or the oxidizing gas delivery device, and the exhaust device and / or the oxidizing gas delivery device adjust the pressure in the decarbonization furnace body by controlling the flow rate of the gas;

[0024] The carbon removal discharge pipe is connected to the carbon removal furnace body; the mesh belt extends out of the carbon removal furnace body through the carbon removal discharge pipe; the carbon removal discharge pipe has a first angle with the horizontal plane, and the first angle is in the range of 10° to 35°.

[0025] K19. A fiber-reinforced composite material continuous recovery system according to any one of K1 to K9, wherein the superheated steam generator comprises: an inner tank, the inner tank having an installation cavity; an outer tank, disposed on a side of the inner tank away from the installation cavity, with a steam channel between the outer tank and the inner tank; a heating element, at least a portion of the heating element being located in the installation cavity; wherein the control component of the fiber-reinforced composite material continuous recovery system further comprises a temperature control element, and the temperature control element is connected to the heating element.

[0026] K20. A continuous recycling system for fiber-reinforced composite materials according to K19, wherein the heating element comprises a first heating element and a second heating element, and the temperature control element is arranged on the first heating element and / or the second heating element; the steam channel comprises: a first steam channel, the first steam channel comprises an inlet, and the first heating element is used to heat the first steam channel; a second steam channel, connected to the first steam channel, the second steam channel comprises a steam outlet, and the second heating element is used to heat the second steam channel; at least a portion of the second steam channel extends in a tortuous manner relative to the first steam channel; the first steam channel extends along a first direction; the second steam channel comprises a connecting channel and an exhaust channel, the exhaust channel is connected to the first steam channel through the connecting channel, the exhaust channel extends along the first direction, and the connecting channel extends along a second direction different from the first direction.

[0027] K21. A fiber-reinforced composite material continuous recovery system according to K19, wherein the superheated steam generator further comprises: a generator shell, the generator shell having an assembly cavity, at least a portion of the inner liner and at least a portion of the outer liner being located in the assembly cavity; a second insulation layer, disposed in the assembly cavity and between the outer liner and the generator shell; a plurality of reinforcing ribs, spaced apart on the generator shell; and a drainage assembly, the drainage assembly being capable of communicating with the steam channel.

[0028] K22. A continuous recovery system for fiber reinforced composite materials according to any one of K1 to K9, wherein the heat energy conversion combustion furnace comprises: a conversion furnace shell, the conversion furnace shell having a conversion furnace chamber; a first burner, arranged on the conversion furnace shell and connected to the conversion furnace chamber, the first burner being used to ignite pyrolysis gas; a second burner, arranged on the conversion furnace shell and connected to the conversion furnace chamber, the second burner being used to ignite fuel gas; a third exhaust assembly, arranged on the conversion furnace shell and connected to the conversion furnace chamber.

[0029] K23. A fiber-reinforced composite material continuous recovery system according to K22, wherein the first burner and the third exhaust assembly are arranged on opposite side walls of the conversion furnace shell; the second burner is arranged on the top wall of the conversion furnace shell; the third exhaust assembly includes: at least two exhaust ports, which are arranged on the conversion furnace shell; a switching valve, which is arranged at at least two exhaust ports, and the at least two exhaust ports can be connected to the conversion furnace chamber through the switching valve; the control assembly of the fiber-reinforced composite material continuous recovery system is also used to regulate the internal temperature of the conversion furnace chamber and / or the internal pressure of the conversion furnace chamber.

[0030] K24. According to the fiber reinforced composite material continuous recovery system described in K22, the thermal energy conversion combustion furnace also includes: a safety cap, which is arranged on the conversion furnace shell; a drip hole, which is arranged on the conversion furnace shell; a third insulation layer, which is arranged on the inner wall of the conversion furnace shell; and a perspective window is provided on the conversion furnace shell, and the perspective window is detachably arranged on the conversion furnace shell.

[0031] The fiber-reinforced composite material continuous recycling system provided in the present application heats the fiber-reinforced composite material waste through superheated steam and provides oxygen-free protection, thereby ensuring that the fiber-reinforced composite material waste can be effectively pyrolyzed; and the cracked gas generated after pyrolysis can be fully burned in the heat energy conversion combustion furnace to generate a clean heat source, which can provide a heat source for the superheated steam generator and / or the conveyor belt pyrolysis furnace, saving the cost of fiber recycling and realizing continuous fiber non-damage recycling. At the same time, the recycling process has the characteristics of zero tail gas emission and zero pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the implementation of the present application, the following is a brief introduction to the relevant drawings. It is understood that the drawings described below are only used to illustrate some implementations of the present application, and those skilled in the art can also obtain many other technical features and connection relationships not mentioned in this document based on these drawings.

[0033] Figure 1 A schematic structural diagram of a continuous recycling system for fiber-reinforced composite materials provided in this application.

[0034] Figure 2 This is a schematic diagram of the structure of an oxidizing gas delivery device provided in this application.

[0035] Figure 3 A schematic structural diagram of a conveyor belt pyrolysis furnace provided in this application.

[0036] Figure 4 A schematic structural diagram of a conveyor belt type pyrolysis furnace cracking gas extraction device provided in the present application.

[0037] Figure 5 A schematic structural diagram of a conveyor belt type pyrolysis furnace air curtain device provided in this application.

[0038] Figure 6 This is a schematic structural diagram of a conveyor-type carbon removal furnace provided in this application.

[0039] Figure 7 A schematic cross-sectional view of the carbon removal furnace body structure of a conveyor-type carbon removal furnace provided in the present application.

[0040] Figure 8 A schematic structural diagram of an exhaust device for a conveyor-type carbon removal furnace provided in this application.

[0041] Fig. 9 A schematic structural diagram of a superheated steam generator provided in this application.

[0042] Fig.10 A schematic structural diagram of a thermal energy conversion combustion furnace provided in this application.

[0043] The reference numerals and names in the figures are as follows:

[0044] 2. Superheated steam generator; 21. Inner liner; 22. Outer liner; 231. First steam channel; 232. Second steam channel; 233. Connecting channel; 234. Exhaust channel; 235. Inlet; 236. Steam outlet; 24. Heating element; 241. First heating element; 242. Second heating element; 25. Temperature control unit; 26. Generator housing; 27. Second insulation layer; 28. Reinforcement ribs; 29. ​​Drainage assembly;

[0045] 3. Thermal energy conversion combustion furnace; 310. Conversion furnace shell; 311. Conversion furnace chamber; 312. First burner; 313. Second burner; 314. Third exhaust assembly; 316. Safety cap; 317. Drip hole; 318. Third insulation layer; 319. Perspective window; 320. Base.

[0046] 4. Oxidizing gas delivery device; 41. Shell; 411. Heat exchange chamber; 421. First air inlet pipe; 422. First air outlet pipe; 423. Second air inlet pipe; 424. Second air outlet pipe; 43. Fourth thermal insulation layer; 44. Support member;

[0047] 5. Conveyor belt type pyrolysis furnace; 501. Pyrolysis furnace body; 511. Pyrolysis feed pipe; 512. Pyrolysis discharge pipe; 513. Cracking pipe; 502. Conveyor belt; 521. Feed side; 522. Discharge side; 523. Central conveyor; 503. Cracking gas extraction device; 504. Air curtain device; 541. Air inlet air curtain mechanism; 542. Air curtain nozzle; 505. Heating chamber; 551. Heat source inlet; 552. Heat source outlet; 506. Electric heating component; 507. Cracking gas outlet; 508. Pyrolysis fan; 509. Pressure relief pipe; 510. Pyrolysis one-way valve; 515. Water cooling device; 516. Anti-leakage pipe; 517. Pyrolysis valve;

[0048] 6. Conveyor-belt carbon removal furnace; 601. Carbon removal furnace body; 602. Conveyor belt device; 621. Mesh belt; 622. Carbon removal drive mechanism; 603. Carbon removal air supply pipeline; 631. Main pipeline; 632. Branch pipeline; 604. Heating chamber; 641. First electric heating device; 605. Carbon removal exhaust outlet; 651. Carbon removal fan; 652. Carbon removal one-way valve; 606. Carbon removal exhaust pipeline; 607. Carbon removal discharge pipeline. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be described in detail below in conjunction with the drawings in the embodiments of the present application.

[0050] The inventors of this application have discovered that the prior art technology for recycling and reusing fiber-reinforced composite waste is still in its infancy and cannot meet the needs of the industry. Large-scale, continuous, low-cost, and low-energy recycling and reuse technology is urgently needed to achieve sustainable, green, and low-carbon development of the industry.

[0051] In view of this, refer to Figure 1 The fiber reinforced composite material continuous recycling system provided in the present application heats the fiber reinforced composite material waste and provides oxygen-free protection by superheated steam, thereby ensuring that the fiber reinforced composite material waste can be effectively thermally decomposed, and the pyrolysis gas generated after pyrolysis can be fully burned in the thermal energy conversion combustion furnace 3 to generate a clean heat source, which can provide a heat source for the superheated steam generator 2, saving the cost of fiber recycling and realizing large-scale, continuous, low-cost, and low-energy recycling of fiber reinforced composite materials. At the same time, the recycling process has the characteristics of zero exhaust emissions and zero pollution.

[0052] Implementation Method 1

[0053] The present application provides a fiber reinforced composite material continuous recycling system for recycling fiber reinforced composite material waste, such as Figure 1 , Figure 3 and Figure 5 As shown, the fiber reinforced composite material continuous recycling system includes:

[0054] A conveyor belt type pyrolysis furnace 5, wherein a conveyor belt 502 of the conveyor belt type pyrolysis furnace 5 is connected to a feeding device, and an air curtain device 504 is provided at the inlet and outlet of the conveyor belt 502, and the air curtain device 504 is used to release superheated steam to generate an air curtain and heat the fiber reinforced composite material;

[0055] A superheated steam generator 2, connected to the air curtain device 504 of the conveyor-type pyrolysis furnace 5, for conveying superheated steam to the air curtain device 504;

[0056] The heat energy conversion combustion furnace 3 is connected to the cracking gas outlet 507 of the conveyor belt pyrolysis furnace 5, and is used to ignite the cracking gas from the conveyor belt pyrolysis furnace 5; the heat energy conversion combustion furnace 3 is also connected to the superheated steam generator 2, and is used to send the burned heat source gas into the superheated steam generator 2, so that the superheated steam generator 2 produces the superheated steam;

[0057] The conveyor-type carbon removal furnace 6 is connected to the conveyor-type pyrolysis furnace 5 and is used to perform carbon removal treatment on the fiber-reinforced composite material after pyrolysis in the conveyor-type pyrolysis furnace 5 and output fiber precursors.

[0058] The fiber-reinforced composite material continuous recycling system provided in the present application is used to recycle fiber-reinforced composite material waste. The fiber-reinforced composite material continuous recycling system includes a conveyor-type pyrolysis furnace 5, a superheated steam generator 2, a heat energy conversion combustion furnace 3 and a conveyor-type carbon removal furnace 6.

[0059] The conveyor belt type pyrolysis furnace 5 is used to continuously convey and pyrolyze the fiber reinforced composite waste. In the process of conveying the fiber reinforced composite waste, the fiber reinforced composite waste is heated in the pyrolysis furnace body 501 of the conveyor belt type pyrolysis furnace 5, the resin matrix and the fiber are separated, and the resin matrix undergoes a pyrolysis reaction to generate pyrolysis gas. In addition, the generated pyrolysis gas can be conveyed to the thermal energy conversion combustion furnace 3 for full combustion, thereby obtaining a clean heat source.

[0060] In addition, it should be noted that the conveyor belt type pyrolysis furnace 5 uses a conveyor belt 502 to transport the fiber reinforced composite material. The feeding device transports the crushed fiber reinforced composite material to the conveyor belt 502. The conveyor belt 502 allows the fiber reinforced composite material to enter the cracking furnace body 501 from one end of the cracking furnace body 501 of the conveyor belt type pyrolysis furnace and leave from the other end of the cracking furnace body 501. The air curtain device 504 releases superheated steam, which is used to generate an air curtain on the one hand to isolate air from entering the cracking furnace body 501; on the other hand, it is used to heat the fiber reinforced composite material.

[0061] The superheated steam generator 2 can be connected to the conveyor belt pyrolysis furnace 5 and convey superheated steam to the air curtain device 504. The superheated steam generator 2 can heat water to obtain steam, and reheat the steam to obtain superheated steam. The superheated steam generated by the superheated steam generator 2 can be used as a protective gas during the pyrolysis reaction of fiber-reinforced composite waste, and can play a role in isolating oxygen, preventing the resin in the fiber-reinforced composite waste from reacting with oxygen to produce harmful gases. At the same time, the superheated steam can also be used as a heat transfer medium to separate the fiber and the matrix resin in the fiber-reinforced composite waste, and obtain clean, carbon-free regenerated fibers with a strength of more than 90% of the original fibers and excellent performance.

[0062] The heat conversion combustion furnace 3 is respectively connected with the conveyor belt pyrolysis furnace 5 and the superheated steam generator 2. The heat conversion combustion furnace 3 can ignite the pyrolysis gas from the conveyor belt pyrolysis furnace 5 to form a heat source gas, and transport the heat source gas to the superheated steam generator 2 for heating water or steam.

[0063] The conveyor-type carbon removal furnace 6 is used to perform carbon removal treatment on the fiber-reinforced composite material after pyrolysis in the conveyor-type pyrolysis furnace 5, and output fiber precursors. An oxidizing gas is introduced into the conveyor-type carbon removal furnace 6. During the transportation of the fiber-reinforced composite material in the furnace chamber of the conveyor-type carbon removal furnace 6, the oxidizing gas will react with the residual carbon on the fiber-reinforced composite material to achieve the purpose of carbon removal. After the residual carbon on the surface of the fiber-reinforced composite material is contacted by the oxidizing gas, it will be oxidized to produce carbon dioxide.

[0064] The fiber reinforced composite material continuous recycling system provided in the present application heats the fiber reinforced composite material waste by superheated steam and provides oxygen-free protection, thereby ensuring that the fiber reinforced composite material waste can be effectively pyrolyzed; and the cracking gas generated after pyrolysis can be fully combusted in the thermal energy conversion combustion furnace 3 to generate a clean heat source, and the clean heat source can provide a heat source for the superheated steam generator 2 and / or the conveyor belt pyrolysis furnace 5, saving the cost of fiber recovery and realizing continuous fiber damage-free recovery. At the same time, the recovery process has the characteristics of zero exhaust emissions and zero pollution.

[0065] In this embodiment, the heat conversion combustion furnace 3 is also connected to the pyrolysis furnace body 501 of the conveyor belt pyrolysis furnace 5, and heat source gas is transported into the conveyor belt pyrolysis furnace 5 for supplementary heating. It should be noted that in the conveyor belt pyrolysis furnace 5, superheated steam is used as the main heat source to heat the pyrolysis furnace body 501 of the conveyor belt pyrolysis furnace 5 and the fiber reinforced composite material waste located in the pyrolysis furnace body 501, while the heat source gas is used as an auxiliary heat source to heat a local area of ​​the pyrolysis furnace body 501 of the conveyor belt pyrolysis furnace 5 to achieve the purpose of temperature control.

[0066] In addition, the decarbonization exhaust pipe 606 of the conveyor type decarbonization furnace 6 is connected to the heat conversion combustion furnace 3, and is used to transport decarbonization gas to the heat conversion combustion furnace 3 to produce heat source gas. The decarbonization gas is a gas obtained after the residual carbon in the conveyor type decarbonization furnace 6 undergoes an oxidation reaction after the oxidizing gas is introduced into the conveyor type decarbonization furnace 6. After this decarbonization gas comes out of the decarbonization exhaust pipe 606 of the conveyor type decarbonization furnace 6, it still has a relatively high temperature. Therefore, passing this decarbonization gas into the heat conversion combustion furnace 3 for reheating to produce heat source gas can effectively save energy loss and reduce recycling costs.

[0067] Implementation Method 2

[0068] This embodiment is a further improvement based on the first embodiment, and its improvement is that, Figure 2 As shown, the fiber reinforced composite material continuous recycling system also includes:

[0069] An oxidizing gas conveying device 4, the oxidizing gas conveying device 4 is connected to the superheated steam generator 2 and the conveyor-type carbon removal furnace 6 respectively;

[0070] The superheated steam generator 2 transports the used heat source gas to the oxidizing gas transport device 4, and then transports the used heat source gas to the conveyor belt type carbon removal furnace 6 via the oxidizing gas transport device 4 for carbon removal operation.

[0071] The oxidizing gas delivery device 4 is used to heat the oxidizing gas to a specified temperature and then deliver it to the conveyor type carbon removal furnace 6. The oxidizing gas heated by the oxidizing gas delivery device 4 can heat the conveyor type carbon removal furnace 6 and the fiber reinforced composite material in the conveyor type carbon removal furnace 6.

[0072] Moreover, the oxidizing gas conveying device 4 is connected to the superheated steam generator 2, and uses the used heat source gas to heat the oxidizing gas, which can effectively utilize the residual heat of the heat source gas, effectively save energy loss, and reduce recovery costs.

[0073] In the specific configuration of the oxidizing gas delivery device 4, the oxidizing gas delivery device 4 comprises: a shell 41, the shell 41 comprises a heat exchange chamber 411;

[0074] The first air inlet and the first air outlet are respectively provided on the shell 41 and communicated with the heat exchange cavity 411. The first air inlet is used to input the oxidizing gas to be heated;

[0075] The second air inlet and the second air outlet are respectively arranged on the shell 41 and communicated with the heat exchange cavity 411. The second air inlet is used for inputting heat source gas.

[0076] The oxidizing gas delivery device 4 comprises a shell 41, a first air inlet, a first air outlet, a second air inlet and a second air outlet, wherein the shell 41 comprises a heat exchange chamber 411, and the heat exchange chamber 411 is used for heat exchange of gas. The first air inlet and the first air outlet constitute one of the flow paths of the gas, and the oxidizing gas to be heated enters the heat exchange chamber 411 through the first air inlet, performs heat exchange in the heat exchange chamber 411, and is discharged to the outside of the shell 41 through the first air outlet after the temperature rises. The second air inlet and the second air outlet constitute the second flow path of the gas, and the heat source gas enters the heat exchange chamber 411 through the second air inlet. The heat source gas serves as a heat source, and the heat source gas entering the heat exchange chamber 411 can perform heat exchange with the oxidizing gas to be heated, and the temperature of the oxidizing gas to be heated rises, and the temperature of the heat source gas decreases. After the temperature of the oxidizing gas to be heated reaches the target temperature, it is discharged from the first air outlet, and the heat source gas after heat exchange is discharged to the outside of the shell 41 through the second air outlet.

[0077] In the present application, two gas flow paths are formed by the first air inlet, the first air outlet, the second air inlet and the second air outlet. For each gas flow path, that is, for the oxidizing gas to be heated and the heat source gas, there are corresponding air inlets and air outlets, which can make the gas in the heat exchange chamber 411 flow more smoothly. The gas in the heat exchange chamber 411 can flow out from the first air outlet or the second air outlet nearby, reducing the noise problem caused by the vortex of the gas inside the shell 41, and reducing the loss of flow rate / pressure inside the heat exchange chamber 411 as much as possible, which can ensure the circulation efficiency of the gas and the production rhythm.

[0078] It is worth noting that in order to enable the gas to flow along a predetermined gas flow path, a driving member is provided on the gas flow path, and the driving member is used to drive the gas to enter the heat exchange chamber 411 from the first air inlet and then be discharged from the first air outlet.

[0079] It is conceivable that the driving member is also used to drive the gas to enter the heat exchange chamber 411 from the second air inlet and then be discharged from the second air outlet.

[0080] For example, the driving member may be a driving fan.

[0081] Alternatively, if Figure 2 As shown, the first air inlet and the first air outlet are respectively arranged on two adjacent walls of the shell 41.

[0082] In an embodiment of the present application, the shell 41 has two adjacent walls, the heat exchange chamber 411 is located between the two opposite walls, and the first air inlet and the second air inlet are respectively located on the two adjacent walls. Then, for one of the gas flow paths, the oxidizing gas to be heated will enter the heat exchange chamber 411 through the first air inlet, and the gas after heat exchange will be discharged from the first air outlet. The movement path of the oxidizing gas to be heated in the heat exchange chamber 411 is close to a corner of the heat exchange chamber 411, so as to avoid mutual obstruction between the oxidizing gas to be heated and the heat source gas, which can further reduce the flow rate / pressure loss.

[0083] Optionally, when the shell 41 includes six walls, for example, a vertical wall, a horizontal wall, and a front-rear wall, the first air inlet and the first air outlet can be arranged on any adjacent wall among the six walls.

[0084] Alternatively, if Figure 2 As shown, the second air inlet and the second air outlet are respectively arranged on two adjacent wall surfaces of the shell 41.

[0085] In an embodiment of the present application, for the second gas flow path, the heat source gas will enter the heat exchange chamber 411 through the second air inlet, and the gas after heat exchange will be discharged from the second air outlet. The movement path of the heat source gas in the heat exchange chamber 411 is close to a corner of the heat exchange chamber 411, so as to avoid mutual obstruction between the oxidizing gas to be heated and the heat source gas, thereby further reducing the flow rate / pressure loss.

[0086] It is conceivable that the second air inlet and the second air outlet may be arranged on any adjacent wall among the six wall surfaces.

[0087] Alternatively, if Figure 2 As shown, the housing 41 includes a top wall, a bottom wall and a plurality of side walls, the top wall and the bottom wall are arranged in the up-down direction, the second air inlet is arranged on the bottom wall, and the first air outlet is arranged on the top wall. The plurality of side walls are arranged between the top wall and the bottom wall, the first air inlet is arranged on one side wall, and the second air outlet is arranged on the other side wall.

[0088] In the embodiment of the present application, the housing 41 includes a top wall, a bottom wall and a plurality of side walls, the top wall and the bottom wall are arranged in the up-down direction, and the second air inlet is arranged on the bottom wall, that is, the heat source gas passes through the heat exchange cavity 411 from bottom to top, adapting to the upward flow trend of the heat source gas, making the flow of the heat source gas smoother and reducing the resistance of the flow process. The first air outlet is arranged on the top wall, because the temperature of the oxidizing gas to be heated rises after being heated in the heat exchange cavity 411, and it is discharged through the first air outlet on the top wall, which is also adapted to the flow trend of the high-temperature airflow.

[0089] In other words, for the second gas flow path, the heat source gas flows into the heat exchange chamber 411 from bottom to top, and then flows out through the second gas outlet on the side wall.

[0090] Among them, multiple side walls are arranged between the top wall and the bottom wall, and the multiple side walls can be understood as wall surfaces in the peripheral direction, such as the front side wall, the rear side wall, the left side wall, and the right side wall. The first air inlet is arranged on one of the multiple side walls, and the second air outlet is arranged on another side wall of the multiple side walls. For example, the first air inlet is arranged on one of the front side wall and the rear side wall, and the second air outlet is arranged on the other of the front side wall and the rear side wall. Alternatively, the first air inlet is arranged on one of the left side wall and the right side wall, and the second air outlet is arranged on the other of the left side wall and the right side wall.

[0091] For example, the first air inlet is disposed on the left wall, and the second air outlet is disposed on the right wall. Then, for one of the gas flow paths, the heated oxidizing gas enters the heat exchange chamber 411 from left to right through the first air inlet, and then after heat exchange, is discharged upward through the first air outlet.

[0092] As for the second gas flow path, the heat source gas enters the heat exchange chamber 411 from bottom to top through the second air inlet, exchanges heat with the oxidizing gas to be heated in the heat exchange chamber 411, and then is discharged to the right outside the shell 41 through the second air outlet.

[0093] Wherein, heat exchange can be achieved between the gas flow paths, and the flow paths of the two will not be combined with each other to affect the efficiency.

[0094] Optionally, the first air inlet and the second air outlet are coaxially arranged.

[0095] In an embodiment of the present application, the first air inlet and the second air outlet respectively have a central axis, and the direction of the central axis is the flow direction of the gas through the first air inlet or the second air outlet. When the central axes of the first air inlet and the second air outlet are coaxially arranged, then for the flow path of the gas, the oxidizing gas to be heated and the heat source gas can meet in the heat exchange chamber 411 to achieve heat exchange, so that the temperature of the oxidizing gas to be heated is increased. At the same time, the flow rate / pressure loss during the flow process can also be reduced.

[0096] Optionally, the second air inlet and the first air outlet are coaxially arranged.

[0097] In an embodiment of the present application, the second air inlet and the first air outlet respectively have a central axis, and the direction of the central axis is the flow direction of the gas through the second air inlet or the first air outlet. When the central axes of the second air inlet and the first air outlet are coaxially arranged, then for the flow path of the gas, the oxidizing gas to be heated and the heat source gas can meet in the heat exchange chamber 411 to achieve heat exchange, thereby increasing the temperature of the oxidizing gas to be heated and, at the same time, reducing the flow rate / pressure loss during the flow process.

[0098] Optionally, a flow cross-sectional area of ​​any one of the first air inlet and the first air outlet is smaller than a flow cross-sectional area of ​​any one of the second air inlet and the second air outlet.

[0099] In the embodiments of the present application, the flow cross-sectional area refers to the area of ​​the first air inlet on the cross section perpendicular to the central axis, that is, the cross section of the first air inlet. When the first air inlet is a circular hole, the flow cross-sectional area of ​​the first air inlet is a circular area. For the first air outlet, the second air inlet and the second air outlet, the definition of the flow cross-sectional area is also applicable.

[0100] As for the flow path of the gas, the gas enters the heat exchange chamber 411 through the air inlet (the first air inlet, the second air inlet), exchanges heat inside the heat exchange chamber 411, and then is discharged from the air outlet (the first air outlet, the second air outlet).

[0101] Among them, according to the gas flow requirements, the flow rates of the first air inlet and the first air outlet are smaller than those of the second air inlet and the second air outlet. As the second gas flow path of the heat source, in order to provide sufficient heat, the flow rate of the heat source gas needs to be relatively large so as to meet the heat exchange requirements.

[0102] Alternatively, if Figure 2 As shown, the oxidizing gas delivery device 4 further includes a first air inlet pipe 421 , which is disposed on the shell 41 and communicates with the heat exchange chamber 411 through a first air inlet port.

[0103] In an embodiment of the present application, the oxidizing gas delivery device 4 also includes a first air inlet pipe 421, which is arranged on the shell 41 and connected to the heat exchange chamber 411 through a first air inlet port. The first air inlet pipe 421 can be conveniently assembled and connected with the structure to be installed, and can adapt to the installation requirements of different structures to be installed.

[0104] Optionally, the first air inlet pipe 421 is detachably disposed on the housing 41 , and the first air inlet pipe 421 can be disassembled and assembled as required.

[0105] Alternatively, if Figure 2 As shown, the oxidizing gas delivery device 4 further includes a first gas outlet pipe 422 , which is disposed on the shell 41 and communicates with the heat exchange chamber 411 through a first gas outlet.

[0106] In an embodiment of the present application, the oxidizing gas delivery device 4 also includes a first air outlet pipe 422, which is arranged on the shell 41 and connected to the heat exchange chamber 411 through a first air outlet. The first air outlet pipe 422 can be conveniently assembled and connected with the structure to be installed, and can adapt to the installation requirements of different structures to be installed.

[0107] Optionally, the first air outlet pipe is detachably arranged on the shell 41, and the first air outlet pipe can be disassembled and assembled according to requirements.

[0108] For one of the gas flow paths, the heated oxidizing gas enters the heat exchange chamber 411 through the first air inlet pipe 421 and the first air inlet port, completes the heat exchange process in the heat exchange chamber 411, and is discharged to the outside of the heat exchange chamber 411 through the first air outlet and the first air outlet pipe.

[0109] Alternatively, if Figure 2 As shown, the oxidizing gas delivery device 4 further includes a second air inlet pipe 423 , which is disposed on the shell 41 and communicates with the heat exchange chamber 411 through a second air inlet port.

[0110] In an embodiment of the present application, the oxidizing gas delivery device 4 also includes a second air inlet pipe 423, which is arranged on the shell 41 and connected to the heat exchange chamber 411 through a second air inlet port. The second air inlet pipe 423 can be conveniently assembled and connected with the structure to be installed, and can adapt to the installation requirements of different structures to be installed.

[0111] Optionally, the second air inlet pipe 423 is detachably disposed on the housing 41 , and the second air inlet pipe 423 can be disassembled and assembled as required.

[0112] Alternatively, if Figure 2 As shown, the oxidizing gas delivery device 4 further includes a second gas outlet pipe 424 , which is disposed on the shell 41 and communicates with the heat exchange chamber 411 through a second gas outlet.

[0113] In an embodiment of the present application, the oxidizing gas delivery device 4 also includes a second air outlet pipe 424, which is arranged on the shell 41 and connected to the heat exchange chamber 411 through a second air outlet. The second air outlet pipe 424 can be conveniently assembled and connected with the structure to be installed, and can adapt to the installation requirements of different structures to be installed.

[0114] Optionally, the second air outlet pipe 424 is detachably disposed on the shell 41 , and the second air outlet pipe 424 can be disassembled and assembled as required.

[0115] As for the second gas flow path, the heat source gas enters the heat exchange chamber 411 through the second air inlet pipe 423 and the second air inlet port, completes the heat exchange process in the heat exchange chamber 411, and is discharged to the outside of the heat exchange chamber 411 through the second air outlet and the second air outlet pipe 424.

[0116] Implementation Method 3

[0117] The inventors of the present application discovered that when the heat source gas enters the heat exchange chamber 411 from the second air inlet as a heat source, when the thermal insulation performance of the shell 41 is not good enough, a portion of the heat will diffuse to the outside through the shell 41. This portion of heat cannot act on the oxidizing gas to be heated, resulting in unnecessary heat loss.

[0118] For this reason, Figure 2 As shown, the inventor of the present application proposes an improved oxidizing gas delivery device 4 in the third embodiment of the present application, the main improvement of which is that a fourth insulation layer 43 is further added on the original basis, and the fourth insulation layer 43 is arranged on the shell 41 and located in the heat exchange chamber 411.

[0119] In an embodiment of the present application, a fourth thermal insulation layer 43 is provided on the inner wall of the shell 41, and the fourth thermal insulation layer 43 is used to block the heat inside the heat exchange chamber 411 from propagating to the outside of the shell 41, so that the heat brought by the heat source gas serving as the heat source can be gathered inside the heat exchange chamber 411, thereby maximizing the heat exchange between the oxidizing gas to be heated and the heat source gas, and avoiding unnecessary heat loss.

[0120] In addition, the fourth thermal insulation layer 43 disposed inside the shell 41 can also provide structural strength support for the shell 41, thereby preventing the stress condition of the shell 41 from changing due to thermal expansion and contraction, thereby preventing the shell 41 from deforming.

[0121] Optionally, the heat source gas inside the heat exchange cavity 411 has a tendency to flow upward, so the fourth insulation layer 43 can be arranged on the top inner wall of the shell 41, which can not only provide heat insulation but also reduce material costs.

[0122] Optionally, the fourth heat-insulating layer 43 is disposed on the entire inner wall of the shell 41 , so that the possibility of the heat source gas propagating to the outside of the shell 41 is reduced as much as possible, thereby further enhancing the heat exchange efficiency.

[0123] Implementation Method 4

[0124] During the installation of the oxidizing gas delivery device 4 , due to the diversity of the locations to be installed, there is a need to adapt to different locations to be installed.

[0125] For this purpose, the inventor of this application has optimized the design in the above-mentioned embodiment 3, such as Figure 2 As shown, the oxidizing gas conveying device 4 further includes a support member 44 , and the support member 44 is disposed on the housing 41 .

[0126] In the embodiment of the present application, the support member 44 is provided on the housing 41, and the housing 41 can be installed to the installation position through the support member 44. The structure of the housing 41 can be fixed, and the specific structure of the support member 44 can be adaptively adjusted according to the requirements of the installation position.

[0127] For example, the support member 44 may be a hanging structure, so that the housing 41 is hung at the location to be installed. Alternatively, the support member 44 may be a supporting leg, and the housing 41 is installed at the location to be installed, such as on the ground, through the supporting leg.

[0128] In addition, the support member 44 can also realize the suspended setting of the shell 41, so that the support member 44 does not directly contact the installation position, thereby avoiding the potential safety hazard caused by the heat transmission to the outside.

[0129] Optionally, the support member 44 is disposed on the bottom wall of the housing 41 .

[0130] In an embodiment of the present application, the support member 44 is arranged on the bottom wall of the shell 41, and the support member 44 can be supported on the ground. At this time, the shell 41 as a whole is suspended relative to the ground, so that there is an assembly space between the shell 41 and the ground. When the second air inlet pipe 423 located at the bottom needs to be connected to the second air inlet port, it can provide assembly space for the second air inlet pipe 423, and can also improve the compactness of the overall structure of the oxidizing gas delivery device 4.

[0131] Implementation Method 5

[0132] This embodiment is a further improvement based on the above embodiment. Figure 3 As shown, specifically:

[0133] The conveyor belt pyrolysis furnace 5 comprises:

[0134] A pyrolysis furnace body 501 and a conveyor belt 502 disposed through the pyrolysis furnace body 501;

[0135] A cracking gas extraction device 503, arranged on the pyrolysis furnace body 501, for extracting cracking gas generated by pyrolysis of the fiber reinforced composite material in the pyrolysis furnace body 501;

[0136] The air curtain device 504 is arranged at the inlet and outlet of the conveyor belt 502, and the air curtain device 504 is used to release superheated steam to generate an air curtain and heat the fiber-reinforced composite material.

[0137] The pyrolysis furnace body 501 in the present application serves as the frame structure of the conveyor-type pyrolysis furnace, which, on the one hand, provides installation locations for various parts; on the other hand, it also serves as a reaction chamber for the pyrolysis reaction, which is used to isolate the pyrolysis reaction from the outside world and provide an independent reaction place for the pyrolysis reaction to ensure the smooth progress of the reaction. In an embodiment of the present application, the pyrolysis furnace body 501 can be set as a horizontal structure, and various support beams, support columns and other support members for supporting the pyrolysis furnace body 501 are provided at the bottom. In addition, the pyrolysis furnace body 501 in the present application can be wrapped with thermal insulation materials on the outside to avoid internal heat loss and reduce energy loss. It can also isolate internal heat to avoid burns to staff due to accidental touch.

[0138] The conveyor belt 502 is driven by a driving mechanism. The fiber-reinforced composite material to be processed is placed on the conveyor belt 502, and is driven by the conveyor belt 502 to enter the pyrolysis furnace body 501 from the inlet of the pyrolysis furnace body 501, and is discharged from the outlet of the pyrolysis furnace body 501. When the fiber-reinforced composite material is inside the pyrolysis furnace body 501, a pyrolysis reaction is carried out; and when the reaction is terminated, the fiber-reinforced composite material is discharged from the outlet of the pyrolysis furnace body 501. In actual practical processes, different fiber-reinforced composite materials require different times for the pyrolysis reaction to be complete. Those skilled in the art can adjust the moving speed of the conveyor belt 502 according to the type of fiber-reinforced composite material to adjust the reaction time of the fiber-reinforced composite material to ensure that its reaction is complete.

[0139] When the fiber-reinforced composite material is transported by the conveyor belt 502, it needs to enter the pyrolysis furnace body 501 from one side and leave from the other side. Therefore, a certain gap needs to be left at the positions corresponding to the conveyor belt 502 on both sides of the pyrolysis furnace body 501 for the conveyor belt 502 and the fiber-reinforced composite material placed on the conveyor belt 502 to pass through. Due to the existence of the above gaps, the pyrolysis furnace body 501 cannot be completely sealed. The air outside the pyrolysis furnace body 501 may enter the pyrolysis furnace body 501 through these gaps and affect the pyrolysis reaction in the pyrolysis furnace body 501.

[0140] In order to solve the above problem, an air curtain device 504 is provided at the inlet and outlet of the conveyor belt 502. The air curtain device 504 is used to release superheated steam to generate an air curtain.

[0141] The air curtain is essentially a kind of air curtain, which is an airflow barrier with a certain thickness formed by the ejected high-speed gas. This airflow barrier formed by the high-speed airflow can isolate the inner and outer spaces of the pyrolysis furnace body 501 from each other to a certain extent, and can not only prevent the internal gas of the pyrolysis furnace body 501 from leaking to the outside, but also prevent the external gas from entering the pyrolysis furnace body 501, thereby preventing the oxidizing gas from affecting the pyrolysis reaction. In addition, the airflow barrier can isolate the flow of gas inside and outside the pyrolysis furnace body 501, effectively reducing the heat exchange between the gas inside and outside the pyrolysis furnace body 501, thereby effectively preventing the loss of heat inside the pyrolysis furnace body 501.

[0142] The cracking gas extraction device 503 is used to extract the cracking gas generated by the pyrolysis of the fiber-reinforced composite material in the pyrolysis furnace body 501. It should be noted that the cracking gas extraction device 503 is used to extract the cracking gas inside the pyrolysis furnace body 501 on the one hand; on the other hand, the gas pressure inside the pyrolysis furnace body 501 can be adjusted by controlling the gas flow rate of the extracted cracking gas, so that the gas pressure inside the pyrolysis furnace body 501 is less than the atmospheric pressure (that is, the inside of the pyrolysis furnace body 501 is in a negative pressure state). In this way, the gas pressure inside the pyrolysis furnace body 501 is less than the atmospheric pressure, and the gas inside the pyrolysis furnace body 501 is difficult to leak to the outside, thereby avoiding waste.

[0143] In particular, in this embodiment, the air curtain device 504 generates an air curtain by releasing superheated steam, and also utilizes the superheated steam to heat the fiber reinforced composite material entering the pyrolysis furnace body 501 .

[0144] Specifically, the air curtain device 504 is arranged at the inlet and outlet of the conveyor belt 502. In this embodiment, the air curtain device 504 includes two, which are respectively located at the inlet and outlet of the pyrolysis furnace body 501, corresponding to the inlet and outlet of the conveyor belt 502. When the fiber reinforced composite material passes through the air curtain device 504, it will be heated by the superheated steam released by the air curtain device 504. In addition, since the air pressure inside the pyrolysis furnace body 501 is less than the atmospheric pressure, the superheated steam released by the air curtain device 504 on both sides of the inlet and outlet of the pyrolysis furnace body 501 will be sucked into the pyrolysis furnace body 501 under the action of air pressure. Specifically, the superheated steam released by the air curtain device 504 located at the inlet of the pyrolysis furnace body 501 enters the pyrolysis furnace body 501 along the moving direction of the fiber reinforced composite material under the action of air pressure; the superheated steam released by the air curtain device 504 located at the outlet of the pyrolysis furnace body 501 enters the pyrolysis furnace body 501 against the moving direction of the fiber reinforced composite material under the action of air pressure.

[0145] When the superheated steam enters the pyrolysis furnace body 501, it can heat the pyrolysis furnace body 501 and the fiber reinforced composite material in the pyrolysis furnace body 501 at the same time. The cracking gas extraction device 503 extracts the excess superheated steam entering the pyrolysis furnace body 501 and the cracking gas generated by the pyrolysis reaction in the pyrolysis furnace body 501 from the pyrolysis furnace body 501 to the outside, so that the furnace maintains a negative pressure. The extracted gas can be recycled. For example, the cracking gas can be separated and the superheated steam can be recycled.

[0146] In this embodiment, the gas flow rate of the cracking gas exhaust device 503 can be controlled so that the superheated steam released by the air curtain device 504 can be sucked into the pyrolysis furnace body 501, thereby preventing the superheated steam from leaking to the outside and reducing the loss of superheated steam. In addition, the superheated steam can be released by the air curtain device 504 to form an air curtain to isolate the outside air from entering the pyrolysis furnace body 501 to avoid affecting the pyrolysis reaction inside the pyrolysis furnace body 501; it can also be used as a heating source to heat the pyrolysis furnace body 501 and the fiber-reinforced composite material. In this way, the superheated steam can be effectively utilized, the utilization rate of the superheated steam can be improved, and the cost can be reduced.

[0147] In addition, the pyrolysis reaction is usually carried out in an oxygen-deficient environment. Therefore, the superheated steam can be oxygen-free or micro-oxygen, normal pressure and high temperature superheated steam. This superheated steam can be used as a heating heat source for fiber reinforced composite materials and an oxygen-free or micro-oxygen protective medium for the pyrolysis reaction of fiber reinforced composite materials to provide oxygen-free protection and heating for fiber reinforced composite materials. Specifically, the superheated steam can be obtained by heating water to produce saturated steam, and then further heating the saturated steam. When performing pyrolysis recovery of carbon fiber reinforced composite materials, the superheated steam can specifically be superheated steam with an oxygen content of less than 0.3%, normal pressure, and 400°C-700°C.

[0148] The conveyor belt 502 type pyrolysis furnace in the present application uses the conveyor belt 502 to transport the fiber reinforced composite material, and uses superheated steam to heat it during the transportation process to make it undergo pyrolysis reaction. This method can continuously feed and discharge materials, eliminates the process of repeated heating and cooling, has a short time cycle, high heat utilization rate, and can continuously recycle the fiber reinforced composite material.

[0149] Implementation Method 6

[0150] This embodiment is a further improvement based on the fifth embodiment, and the main improvement is that, Figure 3 As shown, the conveyor belt 502 includes:

[0151] A feed side 521, a discharge side 522 and a central conveyor 523;

[0152] The height of the portion of the central conveying portion 523 that supports the material is greater than that of the portion of the feeding side 521 .

[0153] The feed side 521 and the discharge side 522 are respectively located on two sides of the pyrolysis furnace body 501 , and the central conveying part 523 is located inside the pyrolysis furnace body 501 .

[0154] The superheated steam released by the air curtain device 504 has a relatively high temperature. According to the principle of rising hot air, after being released, the superheated steam first moves downward at the initial speed at the time of release, and then moves upward after contacting the conveyor belt 502. And because the air pressure inside the pyrolysis furnace body 501 is lower than the atmospheric pressure, the moving direction of the superheated steam after contacting the conveyor belt 502 is inclined upward toward the pyrolysis furnace body 501. Therefore, in this embodiment, the height of the part of the central conveying part 523 that supports the material is greater than the part of the feed side 521. Through such a setting, when the conveyor belt 502 is transporting the fiber-reinforced composite material, the moving path of the fiber-reinforced composite material is inclined upward toward the pyrolysis furnace body 501, which coincides with the moving path of the superheated steam, which can improve the utilization rate of the superheated steam and ensure the shielding effect of the air curtain.

[0155] Since the air curtain device 504 is arranged outside the pyrolysis furnace body 501, the superheated steam released by the air curtain device 504 will be released outside the pyrolysis furnace body 501. In order to prevent the superheated steam released by the air curtain device 504 from escaping outside the pyrolysis furnace body 501, thereby reducing the loss of superheated steam, this embodiment is further improved relative to the first embodiment. The improvement is that, Figure 3 As shown, the conveyor belt type pyrolysis furnace also includes:

[0156] The pyrolysis feed pipe 511 and the pyrolysis discharge pipe 512 are respectively connected to the pyrolysis furnace body 501;

[0157] The conveyor belt 502 enters the pyrolysis furnace body 501 through the pyrolysis feeding pipe 511 , and then extends out of the pyrolysis furnace body 501 through the pyrolysis discharging pipe 512 .

[0158] The pyrolysis feed pipe 511 and the pyrolysis discharge pipe 512 correspond to the feed side and the discharge side 522 of the conveyor belt 502 , respectively, and the air curtain device 504 is correspondingly arranged in the pyrolysis feed pipe 511 and the pyrolysis discharge pipe 512 .

[0159] Here, the pyrolysis feed pipeline 511 is used as an example for explanation. Figure 3 As shown, both ends of the pyrolysis feed pipe 511 are respectively provided with openings, one of which is used to communicate with the pyrolysis furnace body 501, and the other opening is used for the conveyor belt 502 to enter the pyrolysis feed pipe 511, and enter the pyrolysis furnace body 501 through the opening on the other side of the pyrolysis feed pipe 511. The air curtain device 504 is arranged in the pyrolysis feed pipe 511, and the air curtain formed by the superheated steam released by the air curtain device 504 is located in the pyrolysis feed pipe 511. By using the pyrolysis feed pipe 511 to wrap the feed side 521 and the air curtain, the superheated steam released by the air curtain is confined in a relatively closed space, which can prevent the superheated steam from escaping to the outside to a certain extent and reduce the loss of superheated steam.

[0160] In this embodiment, the pyrolysis feed pipe 511 has a first angle with the horizontal plane, and the first angle is in the range of 10° to 35°.

[0161] As can be seen from the above, the height of the part of the central conveying part 523 that supports the material is greater than the part of the feed side 521. In this way, the feed side 521 is tilted upward as a whole, that is, there is an angle between the feed side 521 and the horizontal plane. Since the pyrolysis feed pipeline 511 is set corresponding to the feed side 521, the inclination angle of the pyrolysis feed pipeline 511 corresponds to the feed side 521. The angle between the feed side 521 and the horizontal plane is equal to the angle between the pyrolysis feed pipeline 511 and the horizontal plane (that is, the first angle).

[0162] The moving path of the fiber reinforced composite material (i.e., the conveying path of the feed side 521) is inclined upward toward the pyrolysis furnace body 501, which is the same as the moving path of the superheated steam. The moving path of the superheated steam is related to the temperature of the superheated steam on the one hand, and the gas pressure inside the pyrolysis furnace body 501 on the other hand.

[0163] Since superheated steam is used to heat the fiber reinforced composite material to make it undergo pyrolysis reaction, and the temperature of pyrolysis reaction of different types of fiber reinforced composite materials is also different. The temperature of superheated steam is determined by the type of fiber reinforced composite material, that is, when the same type of fiber reinforced composite material is recycled, the temperature of superheated steam is fixed. Therefore, when the same type of fiber reinforced composite material is recycled, the movement path of superheated steam can be determined by the gas pressure inside the pyrolysis furnace body 501.

[0164] In the conveyor belt type pyrolysis furnace, the gas pressure inside the pyrolysis furnace body 501 is mainly determined by the following factors: 1. The gas flow rate of the cracking gas exhaust device 503; 2. The total amount of cracking gas generated by the pyrolysis reaction in the pyrolysis furnace body 501; 3. The flow rate of superheated steam. When the pyrolysis reaction is carried out, the total amount of cracking gas in the pyrolysis reaction in the pyrolysis furnace body 501 is constant. Therefore, when it is necessary to keep the gas pressure inside the pyrolysis furnace body 501 within a certain range, the greater the flow rate of the superheated steam, the greater the gas flow rate of the cracking gas exhaust device 503. The insulating effect of the air curtain generated by the air curtain device 504 is proportional to the flow rate of the superheated steam, that is, the greater the flow rate of the superheated steam, the better the insulating effect of the air curtain.

[0165] Therefore, after comprehensive consideration of the above factors and after multiple experimental adjustments by the applicant, the first angle is optimal in the range of 10° to 35°. At this time, the movement path of the fiber-reinforced composite material coincides with the movement path of the superheated steam, the flow rate of the superheated steam is small, and the air curtain has a better insulation effect. On the premise of being able to meet the pyrolysis reaction of the fiber-reinforced composite material, the amount of superheated steam can be effectively saved, waste can be avoided, and energy can be saved.

[0166] In this embodiment, if Figure 3 and Figure 5 As shown in combination, the air curtain device 504 includes an air inlet air curtain mechanism 541, which is arranged in the pyrolysis feed pipeline 511;

[0167] The air inlet air curtain mechanism 541 includes a plurality of air curtain nozzles 542 , and the air curtain nozzles 542 release superheated steam in the direction of the conveyor belt 502 to generate an air curtain and heat the fiber reinforced composite material.

[0168] Specifically, the plurality of air curtain nozzles 542 are evenly arranged along the width direction of the conveyor belt 502, and the arrangement direction is perpendicular to the moving direction of the conveyor belt 502. In addition, in order to ensure the isolation effect of the air curtain, in this embodiment, the plurality of air curtain nozzles 542 are arranged in at least two rows along the moving direction of the conveyor belt, and the jetting directions of the air curtain nozzles 542 in two adjacent rows are staggered.

[0169] It should be noted that the jet directions of the air curtain nozzles 542 are staggered, which means that the extended lines of their directions are at an angle. The air curtain group with the jet direction facing the side of the pyrolysis furnace body 501 can better isolate the internal gas of the pyrolysis furnace body 501 and prevent the internal gas of the pyrolysis furnace body 501 from leaking to the outside; on the contrary, the air curtain group with the jet direction facing the outside can better isolate the outside air and prevent the outside air from entering the inside of the pyrolysis furnace body 1.

[0170] In addition, in order to further prevent the leakage of superheated steam and cracked gas inside the pyrolysis furnace body 501, an anti-leakage pipeline 516 is also provided on the pyrolysis feed pipeline 511 close to the outside and located on one side of the air curtain mechanism. The anti-leakage pipeline is provided with a pyrolysis valve 517 and is connected to the cracked gas exhaust device 503 or other negative pressure generating device. When the leakage of superheated steam or cracked gas occurs, the pyrolysis valve 517 can be opened and the air can be exhausted through the anti-leakage pipeline 516 to prevent the leakage of cracked gas and superheated steam.

[0171] It should be noted that, in this embodiment, the air curtain device 504 may also include an air outlet air curtain mechanism, which is disposed in the pyrolysis discharge pipe 512 , and its specific structure may be similar to or the same as the air inlet air curtain mechanism 541 .

[0172] In addition, in this embodiment, a water cooling device 515 can be provided in the pyrolysis discharge pipe 512 to cool the pyrolysis-completed fiber and reduce the fiber temperature so that it can be directly oxidized. Specifically, the water cooling device 515 can include a cooling pipe, which surrounds or intervenes in the pyrolysis discharge pipe 512, so as to absorb the heat of the pyrolyzed fiber. By cooling the fiber, the fiber itself can be prevented from burning during the oxidation process of the residual carbon, making the carbon removal reaction more accurate.

[0173] Implementation Method 7

[0174] During the use of implementation mode six, the applicant found that superheated steam is released outside the pyrolysis furnace body 501 and comes into contact with the outside air, which affects the temperature of the superheated steam. After entering the pyrolysis furnace body 501, it may cause the internal temperature of the pyrolysis furnace body 501 to fail to reach the set temperature, thereby affecting the pyrolysis reaction inside the pyrolysis furnace body 501.

[0175] In view of this, the present application also discloses a seventh implementation mode, which is a further improvement based on the sixth implementation mode, and the improvement is as follows: Figure 3 As shown, the conveyor belt type pyrolysis furnace further includes a cracking pipeline 513 disposed in the pyrolysis furnace body 501;

[0176] The two ends of the cracking pipeline 513 are respectively connected to the pyrolysis feed pipeline 511 and the pyrolysis discharge pipeline 512;

[0177] The conveyor belt 502 passes through the cracking pipe 513, and the fiber-reinforced composite material is cracked in the cracking pipe 513;

[0178] A heating chamber 505 is provided between the cracking pipeline 513 and the pyrolysis furnace body 501 , and the cracking gas extraction device 503 passes through the heating chamber 505 and is connected to the cracking pipeline 513 .

[0179] An auxiliary heating device is disposed in the heating chamber 505 .

[0180] The cracking pipe 513 is located inside the pyrolysis furnace body 501 and corresponds to the central conveying portion 523 of the conveyor belt 502, serving as a cracking chamber for the fiber-reinforced composite material to undergo pyrolysis reaction. The fiber-reinforced composite material enters the cracking pipe 513 located inside the pyrolysis furnace body 501 through the pyrolysis feed pipe 511 under the conveying action of the conveyor belt 502, undergoes pyrolysis reaction in the cracking pipe 513, and is subsequently discharged from the pyrolysis discharge pipe 512 at the other end of the pyrolysis furnace body 501.

[0181] During the pyrolysis reaction of the fiber reinforced composite material in the cracking pipe 513 inside the pyrolysis furnace body 501, the auxiliary heating device arranged in the heating chamber 505 can heat the cracking pipe 513 outside the cracking pipe 513, and then heat the fiber reinforced composite material inside the cracking pipe 513. On the basis of superheated steam as the main heat source, the auxiliary heating device can be used as an auxiliary heat source to perform auxiliary heating on the fiber reinforced composite material, so as to ensure that the temperature inside the cracking pipe 513 reaches the set temperature for the pyrolysis reaction of the fiber reinforced composite material, and ensure that the pyrolysis reaction proceeds normally.

[0182] Specifically, the auxiliary heating device comprises:

[0183] A heat source inlet 551 passes through the outer wall of the pyrolysis furnace body 501 and is connected to the heating chamber 505, and is used to pass high-temperature gas into the heating chamber 505 to heat the cracking pipe 513;

[0184] The heat source outlet 552 passes through the outer wall of the pyrolysis furnace body 501 and is connected to the heating chamber 505 for discharging the high-temperature gas.

[0185] By disposing the heat source inlet 551 and the heat source outlet 552 , high-temperature gas flows in the heating chamber 505 , and the high-temperature gas is used to assist in heating the cracking pipe 513 .

[0186] In addition, in this embodiment, the auxiliary heating device may further include:

[0187] An electric heating component 506, which is disposed on the inner wall of the pyrolysis furnace body 501 and can heat at least a portion of the cracking pipe 513;

[0188] The temperature sensor is used to measure the temperature in the cracking pipe 513 , and the temperature sensor is communicatively connected with the electric heating component 506 .

[0189] Specifically, multiple electric heating components 506 can be provided, each corresponding to a portion of the cracking pipeline 513 in multiple areas inside the pyrolysis furnace body 501, so as to divide the cracking pipeline 513 into multiple temperature control areas. Each electric heating component 506 corresponds to a temperature control area, and a temperature sensor is provided in each temperature control area to measure the temperature in the corresponding temperature control area. In practical applications, the temperature of each temperature control area can be monitored in real time by a temperature sensor, and the corresponding temperature control area can be heated by the electric heating component 506 as needed to better ensure the uniform temperature inside the cracking pipeline 513 and realize the temperature control of the local area.

[0190] The same component undergoes pyrolysis reactions at different temperatures, and the resulting cracking gases are different. In addition, the temperatures for pyrolysis reactions of different components are also different. Based on the above two points, technicians can control the temperature of local areas through point heating components according to needs, and can control the pyrolysis reaction to a certain extent, such as controlling the type of cracking gas produced by the pyrolysis reaction and controlling the components undergoing the pyrolysis reaction.

[0191] Implementation Method 8

[0192] This implementation mode is a further improvement based on the seventh implementation mode, and the improvement is as follows: Figure 3 and Figure 4 As shown in the figure, in the conveyor type pyrolysis furnace, the cracking gas extraction device 503 includes:

[0193] A cracking gas outlet 507 is provided on the pyrolysis furnace body 501 and communicated with the cracking pipeline 513 for releasing cracking gas;

[0194] The pressure controller is connected to the cracking gas outlet 507 and adjusts the gas pressure in the cracking pipeline 513 by controlling the gas flow rate of the cracking gas outlet 507 .

[0195] The pressure controller is used to control the gas flow rate of the cracking gas outlet 507 to adjust the pressure in the cracking pipeline 513, so that the pressure inside the cracking pipeline 513 is less than the atmospheric pressure, and the inside of the cracking pipeline 513 is in a state of slight negative pressure. Since the inside of the cracking pipeline 513 is in a state of slight negative pressure, the pressure inside the cracking pipeline 513 is less than the atmospheric pressure, and the cracking gas inside the cracking pipeline 513 is difficult to leak to the outside, thereby preventing pollution and waste and ensuring production safety. The pressure inside the cracking pipeline 513 is mainly affected by the superheated steam injected into the cracking pipeline 513 and the cracking gas generated by the pyrolysis reaction. Therefore, it is sufficient to ensure that the gas flow rate of the cracking gas outlet 507 is greater than the gas flow rate of the superheated steam and the total amount of cracking gas generated by the pyrolysis reaction per unit time.

[0196] In this embodiment, the pressure controller includes:

[0197] A pyrolysis pressure sensor is disposed in the cracking pipeline 513 and detects the pressure in the cracking pipeline 513;

[0198] A pyrolysis blower 508 is communicatively connected to the pyrolysis pressure sensor, and the pyrolysis blower 508 is arranged facing the cracking gas outlet 507;

[0199] A pressure relief pipe 509 is connected to the cracked gas outlet 507, and the pyrolysis fan 508 is installed in the pressure relief pipe 509, and the blowing direction of the pyrolysis fan 508 is toward the direction of the cracked gas outlet 507;

[0200] The pyrolysis one-way valve 510 is arranged in the pressure relief pipe 509 .

[0201] The pyrolysis blower 508 is disposed in the cracking gas outlet 507 and blows outward from the cracking pipeline 513. The pressure in the cracking pipeline 513 is detected by a pyrolysis pressure sensor disposed in the cracking pipeline 513, and the detected pressure in the cracking pipeline 513 is compared with the external pressure. According to the comparison result, the rotation speed of the blower is controlled to control the gas flow rate of the cracking gas outlet 507, and then the pressure in the cracking pipeline 513 is adjusted so that the pressure in the cracking pipeline 513 is slightly lower than the external pressure, so that the cracking pipeline 513 is in a state of slight negative pressure.

[0202] It should be noted that the pressure relief pipeline 509 can be a delivery pipeline for delivering the gas in the cracking pipeline 513 to other locations, or it can be a bypass pipeline connected in parallel to one side of the delivery pipeline. The bypass pipeline can be connected to a temporary gas storage device. Figure 4 As shown, the pressure relief pipe 509 is a delivery pipe for delivering the gas generated by the reaction to other locations, and the pyrolysis blower 508 is directly disposed in the delivery pipe.

[0203] In addition, the gas flow direction of the pyrolysis one-way valve 510 is from the inside of the cracking pipeline 513 to the outside, which can not only ensure the smooth transportation of the gas in the cracking pipeline 513 to the outside, but also avoid the problem of excessive pressure in the furnace caused by the reverse transportation of gas into the cracking pipeline 513 due to gas pressure reasons.

[0204] Implementation Method 9

[0205] This embodiment is a further improvement based on the above embodiment. Figure 6 As shown, specifically:

[0206] The conveyor type carbon removal furnace 6 comprises:

[0207] A carbon removal furnace body 601 and a conveyor belt device 602 arranged through the carbon removal furnace body 601;

[0208] A temperature control device connected to the carbon removal furnace body 601 and adjusting the temperature of the carbon removal furnace body 601;

[0209] The oxidizing gas delivery device includes a plurality of decarbonization gas delivery pipes 603 connected to the decarbonization furnace body 601, and is used to introduce the oxidizing gas into the decarbonization furnace body 601;

[0210] The exhaust device is arranged at the top of the decarbonization furnace body 601 and is used to extract the gas in the decarbonization furnace body 601. The exhaust device keeps the decarbonization furnace body 601 in a negative pressure state.

[0211] The carbon removal furnace body 601 in the present application serves as the frame structure of the conveyor-type carbon removal furnace 6. On the one hand, it provides installation positions for various components; on the other hand, it also serves as the space required for the carbon removal operation, isolating it from the outside world, and provides an independent operating space for the carbon removal operation to ensure that the carbon removal is carried out smoothly. In an embodiment of the present application, the carbon removal furnace body 601 can be set as a horizontal structure, and various support beams, support columns and other support members for supporting the carbon removal furnace body 601 are provided at the bottom. In addition, the carbon removal furnace body 601 in the present application can be wrapped with thermal insulation materials on the outside to avoid internal heat loss and reduce energy loss. It can also isolate internal heat to avoid burns to staff due to accidental touch.

[0212] The transmission belt device is used to transport the fiber reinforced composite material that needs to be decarbonized. It enters the decarbonization furnace body 601 from one side of the decarbonization furnace body 601 and extends out from the other side, and then circulates back to the entry side to achieve continuous feeding. In the process of transporting the fiber reinforced composite material, the residual carbon on the fiber reinforced composite material located inside the decarbonization furnace body 601 undergoes an oxidation reaction to achieve the decarbonization operation. Due to different types of fiber reinforced composite materials, the time required for decarbonization will also be different. Therefore, in the actual production process, those skilled in the art can control the conveyor belt device 602 to adjust the moving speed of the fiber reinforced composite material according to the type of fiber reinforced composite material that needs to be decarbonized, and then control the decarbonization time of the fiber reinforced composite material to ensure complete decarbonization.

[0213] In the present application, the carbon removal air supply pipe 603 is used to introduce oxidizing gas into the carbon removal furnace body 601. By flushing the fiber-reinforced composite material with oxidizing gas at a certain temperature, an oxidation reaction can occur while achieving the purpose of carbon removal. Specifically, in the present embodiment, a plurality of carbon removal air supply pipes 603 are arranged inside the carbon removal furnace body 601, and can be evenly distributed along the conveying direction of the conveyor belt device 602. In the process of being driven and transported by the conveyor belt device 602, the fiber-reinforced composite material passes through the ejection areas corresponding to the plurality of carbon removal air supply pipes 603 in sequence, and is flushed by the oxidizing gas ejected from the carbon removal air supply pipes 603 corresponding to these areas.

[0214] The exhaust device is used to extract the gas in the carbon removal furnace body 601 so that the carbon removal furnace body 601 is maintained in a negative pressure state. The gas includes the oxidizing gas ejected from the carbon removal gas supply pipe 603 and the gas generated by the reaction of the fiber reinforced composite material. After the residual carbon on the surface of the fiber reinforced composite material is contacted by the oxidizing gas, an oxidation reaction will occur to produce carbon dioxide. Therefore, by setting the exhaust device, while extracting the gas in the carbon removal furnace body 601, the residual carbon filling the internal space of the carbon removal furnace body 601 can be collected in the form of carbon dioxide. Moreover, since the carbon removal furnace body 601 is maintained in a negative pressure state, the gas filling the internal space of the carbon removal furnace body 601 will not leak out of the carbon removal furnace body 601 under the action of the air pressure, which is conducive to keeping the external working environment clean.

[0215] Existing carbon removal equipment usually uses electric heating for heating. However, in this method, heat is usually transferred through the thermal radiation of the heating wire or the contact between materials, which easily leads to uneven temperatures in various areas of the carbon removal furnace body 601. In this embodiment, the fiber reinforced composite material is heated with the help of gas, so that the reaction temperature can be more uniform. Specifically, the oxidizing gas in this embodiment can be highly compressed air of 400°C-500°C. Through the setting of the carbon removal air supply pipe 603, the carbon removal air supply pipe 603 is used to pass highly compressed air into the carbon removal furnace body 601 to heat the fiber reinforced composite material. Compared with electric heating, heating with the help of high-temperature gas has the advantage of better diffusion. The oxidizing gas is in direct contact with the fiber reinforced composite material and diffuses through the gaps between the fiber reinforced composite materials, which has a good heating effect and fast heat transfer.

[0216] In addition, in this embodiment, the advantage of using highly compressed air for heating and decarbonization is that the preparation of highly compressed air is simple, and the cracking gas generated during the pyrolysis of fiber-reinforced composite materials can be used to burn and heat the air, and the energy can be recycled and reused, thereby achieving clean production.

[0217] The conveyor type carbon removal furnace 6 may also include a temperature control device, which is connected to the carbon removal furnace body 601 and adjusts the temperature of the carbon removal furnace body 601. On the basis of using highly compressed air as the main heat source of the carbon removal furnace body 601, the temperature control device can be used as an auxiliary heat source to perform auxiliary heating on the carbon removal furnace body 601 to adjust the local temperature of the carbon removal furnace body 601, prevent the problem of uneven local temperature in the dead corner of gas diffusion, and further improve the uniformity of heating.

[0218] The conveyor-type carbon removal furnace 6 in the present application transports the fiber-reinforced composite material through a conveyor belt device 602, and during the conveying process of the conveyor belt, uses the carbon removal gas supply pipe 603 to spray oxidizing gas to oxidize the residual carbon in the fiber-reinforced composite material. The fiber-reinforced composite material that has completed the pyrolysis reaction can be decarbonized on a large scale, continuously, at low cost, and with low energy consumption, and has a good carbon removal effect.

[0219] Implementation Method 10

[0220] This implementation mode is a further improvement based on the ninth implementation mode, and the improvement is as follows: Figure 6 and Figure 7 As shown in combination, the conveyor belt device 602 includes:

[0221] The mesh belt 621 has a plurality of ventilation holes:

[0222] The carbon removal driving mechanism 622 is used to drive the mesh belt 621 to move along the length direction of the carbon removal furnace body 601;

[0223] The carbon removal gas supply pipeline 603 is connected to the bottom of the mesh belt 621 and transports the oxidizing gas toward the direction of the mesh belt 621 .

[0224] The mesh belt 621 is used to support the fiber-reinforced composite material, and is driven by the carbon removal drive mechanism 622 to move the fiber-reinforced composite material. The air holes provided on the mesh belt 621 are used to allow the oxidizing gas to pass through. The carbon removal air supply pipeline 603 is connected to the bottom of the mesh belt 621 and delivers the oxidizing gas in the direction of the mesh belt 621. The oxidizing gas ejected from the carbon removal air supply pipeline 603 can pass through the air holes on the mesh from the bottom of the mesh belt 621 and flush the fiber-reinforced composite material on the upper surface of the mesh belt 621 to achieve better carbon removal.

[0225] It should be noted that the oxidizing gas ejected from the carbon removal gas delivery pipe 603 passes through the air holes from the bottom of the mesh belt 621 to perform preliminary oxidation on the fiber reinforced composite material. The oxidizing gas above the mesh belt 621 will be extracted by the exhaust device, and the oxidizing gas can further oxidize the fiber reinforced composite material during the movement of the oxidizing gas inside the carbon removal furnace body 601. After multiple oxidation reactions of the oxidizing gas, the fiber reinforced composite material can completely remove the residual carbon attached to the fiber surface.

[0226] In this embodiment, the carbon removal gas supply pipeline 603 includes:

[0227] A plurality of main pipelines 631, wherein the main pipelines 631 are connected to the decarbonization furnace body 601 from the outside of the decarbonization furnace body 601;

[0228] At least two branch pipes 632 are arranged at intervals along the length direction or the width direction of the mesh belt 621 , and the branch pipes 632 are provided with a plurality of air jets distributed along the length direction thereof.

[0229] The main pipeline 631 is used as the main pipeline for conveying oxidizing gas into the decarbonization furnace body 601. The branch pipeline 632 is used to connect to the main pipeline 631 and convey oxidizing gas into the decarbonization furnace body 601. By controlling the position of the branch pipeline 632 inside the decarbonization furnace body 601, the position where the oxidizing gas is ejected inside the decarbonization furnace body 601 can be adjusted.

[0230] In this embodiment, if Figure 7 As shown, a plurality of main pipelines 631 are connected from the outside of the decarbonization furnace body 601 to the inside of the decarbonization furnace body 601, and extend downward from one side of the mesh belt 621 to connect with the branch pipeline 632. The plurality of branch pipelines 632 are arranged below the mesh belt 621 at intervals along the length direction of the mesh belt 621, and use the jet port to spray oxidizing gas into the decarbonization furnace body 601.

[0231] In addition, in this embodiment, the temperature control device includes:

[0232] A heating chamber 604, wherein the heating chamber 604 is arranged on the inner wall of the carbon removal furnace body 601, and a first electric heating device 641 is arranged in the heating chamber 604, and the first electric heating device 641 is used to heat the inner space of the carbon removal furnace body 601;

[0233] The main pipeline 631 passes through the heating chamber 604 and is heated by the heating chamber 604 .

[0234] It should be noted that the heating chamber 604 is arranged on the decarbonizing furnace body 601, and the whole can be annular in structure, with a decarbonizing space in the middle for decarbonizing. The first heating device arranged in the heating chamber 604 can heat the heating chamber 604, and heat the decarbonizing space by heat radiation, thereby heating the fiber reinforced composite material in the decarbonizing space.

[0235] When the fiber reinforced composite material is decarbonized in the decarbonization space, the heating chamber 604 can heat the decarbonization space, and then heat the fiber reinforced composite material in the decarbonization space. On the basis of high-compressed air as the main heat source, the heating chamber 604 provided with the first electric heating device 641 can be used as an auxiliary heat source to perform auxiliary heating on the fiber reinforced composite material, so as to ensure that the temperature inside the decarbonization space reaches the set temperature for the fiber reinforced composite material to perform decarbonization, and ensure that the decarbonization operation is performed normally.

[0236] In addition, since the main pipeline 631 is connected to the interior of the carbon removal furnace body 601 and passes through the heating chamber 604 to enter the above-mentioned carbon removal space, the heating chamber 604 can heat the main pipeline 631 passing through the heating chamber 604.

[0237] In actual applications, the temperature of the highly compressed air entering the main pipeline 631 fluctuates, that is, it may not be within the specified temperature range (400°C-500°C). Therefore, when the highly compressed air whose temperature is not within the specified temperature range passes through the heating chamber 604, it can be affected by the heating chamber 604 to adjust to the specified temperature range. Specifically, in this embodiment, the temperature in the decarbonization furnace body 601 should be maintained within the temperature range of 400°C-500°C, and the temperature in the heating chamber 604 should also be within the temperature range of 400°C-500°C. When the highly compressed air entering the main pipeline 631 is lower than 400°C, the highly compressed air will be heated by the heating chamber 604 when passing through the heating chamber 604 so that its temperature when entering the decarbonization space is within the temperature range of 400°C-500°C. When the high-compressed air entering the main pipeline 631 is higher than 500° C., that is, higher than the temperature of the heating chamber 604, the heat of the high-compressed air will be transferred to the heating chamber 604 when passing through the heating chamber 604, so that the temperature is reduced to the temperature range of 400° C.-500° C. In other words, the heating chamber 604 also has the function of stabilizing the temperature.

[0238] It should be noted that in actual use, the highly compressed air introduced into the main pipeline 631 can be heated air, and its temperature is close to the specified temperature range. By setting the heating chamber 604, the temperature of the highly compressed air is adjusted so that the temperature of the highly compressed gas entering the carbon removal space is always within the specified temperature range, thereby ensuring the carbon removal effect.

[0239] In this embodiment, in order to extend the time that the highly compressed air passes through the heating chamber 604 and improve the temperature regulation effect of the heating chamber 604 , at least a portion of the main pipeline 631 may be folded into an S shape in the heating chamber 604 .

[0240] Implementation Method Eleven

[0241] This embodiment is a further improvement based on the tenth embodiment, and its improvement is: Figure 6 As shown, the temperature control device also includes: a first temperature sensor, which is arranged in the heating chamber 604 and is communicatively connected with the first electric heating device 641 .

[0242] In actual use, the temperature in the heating chamber 604 can be monitored in real time by the first temperature sensor, and the temperature of the heating chamber 604 can be regulated by the first electric heating device 641 as needed.

[0243] In this embodiment, the temperature control device further includes:

[0244] A second electric heating device, which is arranged in the carbon removal furnace body 601;

[0245] The second temperature sensor is arranged in the carbon removal furnace body 601 and is in communication connection with the second electric heating device.

[0246] Specifically, multiple second electric heating devices can be provided, corresponding to multiple areas of the carbon removal space, so as to divide the carbon removal space into multiple temperature control areas, and each electric heating device corresponds to one temperature control area. The second temperature sensor is provided in each temperature control area to monitor the temperature in the corresponding temperature control area. In practical applications, the temperature of each temperature control area can be monitored in real time by the second temperature sensor, and the corresponding temperature control area can be heated by the second electric heating device as needed to achieve the purpose of local area temperature control. Implementation Method Twelve

[0247] The present embodiment is a further improvement based on the eleventh embodiment, and the improvement lies in that the conveyor-type carbon removal furnace 6 also includes: a carbon removal pressure sensor, which is arranged in the carbon removal furnace body 601 and detects the pressure in the furnace, and the carbon removal pressure sensor is communicatively connected with the exhaust device and / or the oxidation gas delivery device, and the exhaust device and / or the oxidation gas delivery device adjust the pressure in the carbon removal furnace body 601 by controlling the flow rate of the gas.

[0248] The pressure in the furnace is monitored in real time by a decarbonization pressure sensor, and according to the pressure in the furnace, the gas flow of the exhaust device and / or the oxidizing gas delivery device is controlled to adjust the pressure in the decarbonization furnace body 601.

[0249] In this embodiment, if Figure 6 As shown, the exhaust device may include a decarbonization exhaust outlet 605 disposed on the decarbonization furnace body 601. The decarbonization exhaust outlet 605 is connected to the furnace space for exhausting the gas in the furnace.

[0250] like Figure 8 As shown, the air extraction device may also include:

[0251] A carbon removal fan 651 is connected to the carbon removal pressure sensor for communication, and the carbon removal fan 651 is arranged facing the carbon removal air exhaust outlet 605;

[0252] The carbon removal exhaust pipe 606 is connected to the carbon removal exhaust outlet 605, the carbon removal fan 651 is installed in the carbon removal exhaust pipe 606, and the blowing direction of the carbon removal fan 651 is toward the direction of the carbon removal exhaust outlet 605;

[0253] The carbon removal one-way valve 652 is arranged in the carbon removal exhaust pipe 606 .

[0254] The decarbonization fan 651 is arranged in the decarbonization exhaust outlet 605 and blows out of the decarbonization furnace body 601. The decarbonization pressure sensor arranged in the decarbonization furnace body 601 detects the pressure in the decarbonization furnace body 601, and compares the detected pressure in the decarbonization furnace body 601 with the external pressure. According to the comparison result, the speed of the fan is controlled to control the gas flow rate of the decarbonization exhaust outlet 605, and then the pressure in the decarbonization furnace body 601 is adjusted, so that the pressure in the decarbonization furnace body 601 is slightly less than the external pressure, so that the decarbonization furnace body 601 is in a state of slight negative pressure.

[0255] It should be noted that the decarbonization exhaust pipe 606 can be a delivery pipe for delivering the gas in the decarbonization furnace body 601 to other locations, or it can be a bypass pipe connected in parallel to one side of the delivery pipe. The bypass pipe can be connected to a temporary gas storage device. Figure 8 As shown, the carbon removal exhaust pipeline 606 is a delivery pipeline for delivering the gas generated by the reaction to other locations, and the carbon removal fan 651 is directly arranged in the delivery pipeline.

[0256] In addition, the gas flow direction of the carbon removal one-way valve 652 is from the inside of the carbon removal furnace body 601 to the outside, which can not only ensure the smooth transportation of the gas in the carbon removal furnace body 601 to the outside, but also avoid the problem of excessive pressure in the furnace caused by the reverse transportation of gas into the carbon removal furnace body 601 due to air pressure reasons.

[0257] Implementation Method Thirteen

[0258] This embodiment is a further improvement based on the twelfth embodiment, and the improvement is that: Figure 6 As shown, the conveyor type carbon removal furnace 6 also includes:

[0259] A carbon removal discharge pipe 607 connected to the carbon removal furnace body 601;

[0260] The mesh belt 621 extends out of the decarbonization furnace body 601 through the decarbonization discharge pipe 607 .

[0261] The decarbonization discharge pipe 607 corresponds to the discharge port on the decarbonization furnace body 601, and serves as a buffer space between the interior of the decarbonization furnace body 601 and the outside world. By setting the decarbonization discharge pipe 607, the influence of the outside world on the temperature inside the decarbonization furnace body 601 can be reduced to ensure the normal decarbonization operation inside the decarbonization furnace body 601.

[0262] In this embodiment, the carbon removal discharge pipe 607 has a first angle with the horizontal plane, and the first angle is in the range of 10° to 35°.

[0263] Specifically, the carbon removal discharge pipe 607 is tilted downward from one side of the carbon removal furnace body 601 toward the direction of movement of the mesh belt 621 to a first angle with the horizontal plane. Due to the principle of hot air rising, when the high-temperature gas in the furnace is located in the carbon removal discharge pipe 607, it is difficult for the high-temperature gas to continue to move downward along the carbon removal discharge pipe 607 in the downward tilted carbon removal discharge pipe 607, which can reduce the leakage of high-temperature gas to the outside to a certain extent, and can prevent the outside gas from entering the inside of the carbon removal furnace body 601 along the carbon removal discharge pipe 607.

[0264] It should be noted that, since the pressure of the carbon removal furnace body 601 is lower than the external pressure, the high-temperature gas in the carbon removal discharge pipe 607 will be sucked into the interior of the carbon removal furnace body 601 under the action of the pressure difference. Therefore, under the action of the temperature and the pressure difference between the furnace and the outside, the movement direction of the high-temperature gas in the carbon removal discharge pipe 607 is inclined upward toward the carbon removal furnace body 601. The applicant has found that when the movement direction of the high-temperature gas in the carbon removal discharge pipe 607 is the same as or similar to the extension direction of the carbon removal discharge pipe 607, the leakage of the high-temperature gas is less, and the isolation effect of the external gas is better.

[0265] Therefore, after comprehensive consideration of the above factors and after multiple experimental adjustments by the applicant, the first angle is optimally within the range of 10° to 35°. At this time, the moving direction of the high-temperature gas in the carbon removal discharge pipe 607 is the same as or similar to the extension direction of the carbon removal discharge pipe 607, the leakage of the high-temperature gas is less, the isolation effect of the external gas is better, and energy can be effectively saved.

[0266] Implementation Method 14

[0267] This embodiment is a further improvement based on the above embodiment, and its improvement is that, Fig. 9 As shown, the superheated steam generator 2 includes an inner tank 21, an outer tank 22, a heating element 24 and a temperature control element 25, wherein the inner tank 21 has a mounting cavity, the outer tank 22 is arranged on a side of the inner tank 21 away from the mounting cavity, a steam channel is provided between the outer tank 22 and the inner tank 21, at least a portion of the heating element 24 is located in the mounting cavity, and the temperature control element 25 is arranged on the heating element 24.

[0268] The superheated steam generator 2 of the present application includes an inner liner 21, an outer liner 22, a heating element 24 and a temperature control element 25. The inner liner 21 has a mounting cavity, and the outer liner 22 is arranged on the side of the inner liner 21 away from the mounting cavity, wherein the side pointing to the center of the mounting cavity is the inner side, and the side away from the center of the mounting cavity is the outer side. That is, the outer liner 22 is arranged on the outer side of the inner liner 21, and there is a steam channel between the inner liner 21 and the outer liner 22, and the steam channel is used for steam circulation. It can be imagined that the steam channel has an inlet 235 and a steam outlet 236, so that steam can circulate in the steam channel.

[0269] Among them, at least a part of the heating element 24 is arranged in the installation cavity, for example, the heating element 24 is completely located in the installation cavity, and can quickly and efficiently exchange heat with the steam in the steam channel. Alternatively, a part of the heating element 24 is located in the installation cavity, and the other part of the heating element 24 is exposed relative to the installation cavity. The exposed part of the heating element 24 can facilitate the electrical connection of the heating element 24, and the safety performance is higher. It is worth noting that the heating element 24 is used to provide a heat source, and the heat generated by the heating element 24 can heat the water and / or steam in the steam channel, so as to obtain high-temperature steam that meets the needs.

[0270] Among them, water and / or saturated steam can enter the steam channel through the inlet 235. After being heated by the heat generated by the heating element 24 in the steam channel, the water and / or saturated steam becomes superheated steam, and then is discharged from the steam outlet 236. It is worth noting that the saturated steam can come from a steam boiler. The temperature of saturated steam is 100°C to 200°C, the oxygen content of superheated steam is less than 0.3%, and the temperature of superheated steam is in the range of 400°C to 700°C under normal pressure.

[0271] For example, when water enters the steam channel through the inlet 235, heat is generated through the heating element 24 to heat the water in the steam channel, thereby generating saturated steam. The heating element 24 continues to heat the steam channel, and the saturated steam will be converted into superheated steam. The superheated steam has an oxygen content of less than 0.3% and a temperature in the range of 400°C to 700°C under normal pressure, which meets user needs.

[0272] The temperature control unit 25 is provided on the heating element 24. The temperature control unit 25 is used to detect the working parameters of the heating element 24 and can adjust the working parameters of the heating element 24, so as to control the steam temperature and steam pressure in the steam channel. The working parameters of the heating element 24 include but are not limited to heating power and heating time.

[0273] The superheated steam generator 2 provided in the present application abandons the solution of preparing superheated steam by a traditional pressure boiler, and has the characteristics of easy use, simple structure and high safety performance, which effectively improves the application scope of superheated steam. At the same time, by setting a temperature control unit 25 on the heating element 24, the control of the working parameters of the heating element 24 is achieved, so that the parameters of the superheated steam generated by the superheated steam generator 2 are controllable and can meet the needs of different scenarios.

[0274] Optionally, the inner liner 21 is made of a material with high thermal conductivity. During the heat transfer process, the heat generated by the heating element 24 can be quickly transferred to the steam channel through the inner liner 21. On the one hand, the thermal efficiency is improved. On the other hand, since the heat on the inner liner 21 is quickly taken away by the steam, the temperature of the inner liner 21 is reduced, and the adverse effect of the heat on the structure of the inner liner 21 itself can be minimized, thereby extending the service life of the inner liner 21. Optionally, the inner liner 21 is a heat-resistant stainless steel tube.

[0275] Optionally, the outer container 22 is made of a material with low thermal conductivity, which reduces the heat dissipation caused by heat transfer between the steam and the outer container 22, and improves the thermal efficiency. Among them, the temperature control unit 25 collects the temperature of the steam channel, generates a conduction or disconnection action according to the temperature of the steam channel, adjusts the output power of the heating element 24, and realizes the control of the steam temperature. Optionally, the outer container 22 is a heat-resistant stainless steel tube.

[0276] Optionally, the heating element 24 includes a first heating element 241 and a second heating element 242, and the temperature control unit 25 is disposed on the first heating element 241 and / or the second heating element 242. The steam channel includes a first steam channel 231 and a second steam channel 232, the first steam channel 231 includes an inlet 235, the first heating element 241 is used to heat the first steam channel 231, the second steam channel 232 is connected to the first steam channel 231, the second steam channel 232 includes a steam outlet 236, and the second heating element 242 is used to heat the second steam channel 232.

[0277] In the embodiment of the present application, the heating element 24 includes a first heating element 241 and a second heating element 242, the steam channel includes a first steam channel 231 and a second steam channel 232, the first heating element 241 is used to heat water and / or steam in the first steam channel 231, and the second heating element 242 is used to heat water and / or steam in the second steam channel 232. The combined use of the first heating element 241 and the second heating element 242 can effectively improve the heating efficiency of the heating element 24, so that the possibility of obtaining a large amount of superheated steam per unit time is greatly improved.

[0278] The temperature control unit 25 may be disposed on the first heating element 241, or the temperature control unit 25 may be disposed on the second heating element 242, or the temperature control unit 25 may be disposed on both the first heating element 241 and the second heating element 242. The temperature control unit 25 may adjust the working parameters of the first heating element 241 and the second heating element 242, thereby achieving temperature adjustment of the first steam channel 231 and the second steam channel 232.

[0279] Regarding the steam channel, it includes a first steam channel 231 and a second steam channel 232 that are connected. The first steam channel 231 has an inlet 235, and the second steam channel 232 has a steam outlet 236. That is to say, water and / or saturated steam can enter the first steam channel 231 through the inlet 235, and then flow from the first steam channel 231 to the second steam channel 232. At the same time, the heat generated by the heating element 24 will heat the water and / or steam inside the first steam channel 231 and the second steam channel 232, and finally the superheated steam will be discharged from the steam outlet 236.

[0280] Optionally, at least a portion of the second steam channel 232 extends in a zigzag manner relative to the first steam channel 231 .

[0281] In an embodiment of the present application, at least a portion of the second steam channel 232 extends in a tortuous manner relative to the first steam channel 231, that is, the steam channel as a whole is a tortuous channel. When water and / or steam flows in the steam channel, the tortuous steam channel can extend the flow path and the flow market, thereby making the heat exchange more sufficient and thorough, so that the superheated steam finally discharged through the steam outlet 236 can meet user requirements.

[0282] Optionally, the first steam channel 231 extends along a first direction, the second steam channel 232 includes a connecting channel 233 and an exhaust channel 234, the exhaust channel 234 is connected to the first steam channel 231 through the connecting channel 233, the exhaust channel 234 extends along the first direction, and the connecting channel 233 extends along a second direction different from the first direction.

[0283] In the embodiments of the present application, Fig. 9 As shown, the first steam channel 231 extends along the first direction, and the second steam channel 232 includes a connecting channel 233 and an exhaust channel 234. The exhaust channel 234 is connected to the first steam channel 231 through the connecting channel 233, and the exhaust channel 234 has a steam outlet 236. In other words, the connecting channel 233 is located between the first steam channel 231 and the exhaust channel 234. Among them, the exhaust channel 234 and the first steam channel 231 both extend along the first direction, and the connecting channel 233 extends along the second direction, which is different from the first direction, so that the second steam channel 232 is divided into two sections with different extension directions, thereby meeting the requirement of the steam channel to extend in a tortuous manner.

[0284] For example, the first direction may be a vertical direction, and the second direction may be a horizontal direction. Then, for the steam channel, its longitudinal section along the vertical plane is roughly in a "U" shape.

[0285] Optionally, a guide structure may be provided at the connection point between the first steam channel 231 and the connecting channel 233 to reduce resistance of steam during circulation.

[0286] Optionally, a guide structure may be provided at the connection point between the connecting channel 233 and the exhaust channel 234 to reduce the resistance of the steam during the circulation process.

[0287] Implementation Method Fifteen

[0288] The inventors of this application discovered that when the thermal insulation performance of the outside of the steam channel is not good enough, part of the heat will diffuse from the outside of the steam channel to the external environment. This part of the heat cannot act on the water and / or steam inside the steam channel, resulting in unnecessary heat loss.

[0289] To this end, the fifteenth embodiment of the present application is a further improvement made based on the fourteenth embodiment, and the improvement is that, Fig. 9 As shown, the superheated steam generator 2 also includes a generator shell 26 and a second insulation layer 27. The generator shell 26 has an assembly cavity, and at least a portion of the inner liner 21 and at least a portion of the outer liner 22 are located in the assembly cavity; the second insulation layer 27 is arranged in the assembly cavity and is located between the outer liner 22 and the generator shell 26.

[0290] In an embodiment of the present application, the superheated steam generator 2 further includes a generator shell 26 and a second insulation layer 27. The generator shell 26 has an assembly cavity. The generator shell 26 can constitute the outer contour of the superheated steam generator 2 and protect its internal structural parts.

[0291] Among them, at least a part of the inner liner 21 is located in the assembly cavity, at least a part of the outer liner 22 is located in the assembly cavity, and the steam channel between the inner liner 21 and the outer liner 22 is located inside the shell, that is, in the assembly cavity. The generator housing 26 itself can also play a certain role in heat insulation, blocking heat from being transferred outward.

[0292] Furthermore, a second thermal insulation layer 27 is provided between the generator housing 26 and the outer shell 22. The second thermal insulation layer 27 is located in the assembly cavity. The second thermal insulation layer 27 is used to block the heat inside the steam channel from being transferred to the outside of the generator housing 26, so that the heat can be gathered inside the steam channel, thereby increasing the heat of water and / or steam inside the steam channel as much as possible and avoiding unnecessary heat loss.

[0293] Optionally, an assembly opening is provided on the generator housing 26 , a portion of the heating element 24 passes through the assembly opening and is exposed relative to the generator housing 26 , and the temperature control element 25 is exposed relative to the generator housing 26 .

[0294] In an embodiment of the present application, an assembly opening is provided on the generator housing 26, so that a portion of the heating element 24 can pass through the assembly opening, and the heating element 24 is exposed relative to the assembly cavity. The exposed portion of the heating element 24 can facilitate the setting of the temperature control unit 25, thereby improving the safe use performance of the superheated steam generator 2 and reducing the interference of steam on electrical connection components.

[0295] Optionally, the superheated steam generator 2 further includes a plurality of reinforcing ribs 28 , which are arranged on the generator shell 26 at intervals.

[0296] In an embodiment of the present application, the superheated steam generator 2 also includes a plurality of reinforcing ribs 28, which are arranged at intervals on the generator housing 26. Since the generator housing 26 has components that bring heat, such as a heating element 24 and a steam channel, inside, the generator housing 26 itself has a large temperature difference between its inside and outside, that is, the working environment of the generator housing 26 poses a relatively large test on its own structural strength and structural stability. By arranging a plurality of reinforcing ribs 28 on the generator housing 26, the structural stability of the generator housing 26 can be effectively guaranteed and the possibility of deformation of the generator housing 26 can be reduced.

[0297] In this embodiment, the superheated steam generator 2 further includes a drainage component 29, and the drainage component 29 can be communicated with the steam channel.

[0298] In the embodiment of the present application, the superheated steam generator 2 includes a drainage component 29, which is connected to the steam channel. During normal use of the superheated steam generator 2, the drainage component 29 is closed to ensure that the steam channel can discharge superheated steam. When the superheated steam generator 2 is finished using, the drainage component 29 can be opened to allow the residual water inside the steam channel to be discharged from the drainage component 29, thereby extending the service life of the superheated steam generator 2.

[0299] When the control system and safety device of the fiber reinforced composite material continuous recovery system fail, the drainage component 29 can also play a role in pressure relief, thereby ensuring the safety performance of the operation of the superheated steam generator 2.

[0300] Optionally, a drain assembly 29 is located at the bottom of the steam channel.

[0301] In the embodiment of the present application, the drainage component 29 is arranged at the bottom of the steam channel, and the residual water can be discharged to the outside through the drainage component 29 under the action of gravity, without the need for additional structure to lead out the residual water.

[0302] Optionally, the drain assembly 29 includes a drain valve.

[0303] Implementation Method 16

[0304] This embodiment is a further improvement based on the above embodiment. As shown in the figure, the improvement is that Fig.10 As shown, the heat energy conversion combustion furnace 33 includes a conversion furnace shell 310, a first burner 312, a second burner 313 and a third exhaust assembly 314. The conversion furnace shell 310 has a conversion furnace chamber 311. The first burner 312 is arranged on the conversion furnace shell 310 and is connected to the conversion furnace chamber 311. The first burner 312 is used to ignite the cracking gas. The second burner 313 is arranged on the conversion furnace shell 310 and is connected to the conversion furnace chamber 311. The second burner 313 is used to ignite the fuel gas. The third exhaust assembly 314 is arranged on the conversion furnace shell 310 and is connected to the conversion furnace chamber 311.

[0305] The heat conversion combustion furnace 3 of the present application is used in a continuous recovery system of fiber reinforced composite materials, wherein the heat conversion combustion furnace 3 includes a conversion furnace shell 310, a first burner 312, a second burner 313 and a third exhaust assembly 314, wherein the conversion furnace shell 310 has a conversion furnace chamber 311, and the conversion furnace chamber 311 provides a combustion space. The first burner 312 is arranged on the conversion furnace shell 310, and the first burner 312 is connected to the conversion furnace chamber 311, and the first burner 312 is used to ignite the cracking gas, that is, the cracking gas will be ignited at the first burner 312. The second burner 313 is arranged on the conversion furnace shell 310, and the second burner 313 is connected to the conversion furnace chamber 311, and the second burner 313 is used to ignite the fuel gas, that is, the fuel gas will be ignited at the second burner 313. With the cooperation of the first burner 312 and the second burner 313, the cracking gas can be fully and effectively burned in the conversion furnace chamber 311, thereby obtaining a clean heat source, which can be discharged through the third exhaust assembly 314. The clean heat source will not cause environmental pollution and can also reduce costs. As for the specific destination of the clean heat source, it can be directly discharged to the external environment, or it can be directly transported to other components of the continuous recycling system of fiber-reinforced composite materials, thereby reducing the cost of waste recycling and adapting to the sustainable, green and low-carbon development trend of the industry.

[0306] It is worth noting that the continuous recycling system of fiber reinforced composite materials is used for carbon fiber reinforced composite materials, and the cracking gas is a combustible organic small molecule gas. The fuel gas includes natural gas or coal gas. The clean heat source includes non-toxic high-temperature hot air.

[0307] The thermal energy conversion combustion furnace 3 further includes a base 320 , which is disposed at the bottom of the conversion furnace shell 310 to support the conversion furnace shell 310 .

[0308] During the operation of the heat conversion combustion furnace 3, if there is no cracking gas in the early stage, the second burner 313 can be used to introduce fuel gas into the conversion furnace chamber 311 and ignite it, so that when the cracking gas enters the conversion furnace chamber 311, the temperature in the conversion furnace chamber 311 can reach a preset temperature, which is conducive to the full combustion reaction of the cracking gas. As a large amount of cracking gas is produced, the cracking gas at the first burner 312 is sufficient to meet the combustion needs. At this time, the gas supply at the second burner 313 can be controlled to stop, or a small amount can be supplied to maintain a long flame. In other words, in different working stages of the heat conversion combustion furnace 3, the working parameters of the first burner 312 and the second burner 313 can be controlled to meet the combustion needs of different cracking gas flow rates at different stages, making the versatility of the heat conversion combustion furnace 3 more excellent and meeting the needs of different usage scenarios.

[0309] Optionally, the first burner 312 and the third exhaust assembly 314 are disposed on two opposite side walls of the converter shell 310 .

[0310] In an embodiment of the present application, the conversion furnace shell 310 has two opposite side walls, for example, the front side wall of the conversion furnace shell 310, the rear side wall of the conversion furnace shell 310, or the left side wall of the conversion furnace shell 310, the right side wall of the conversion furnace shell 310, and the first burner 312 and the third exhaust assembly 314 are respectively arranged on the opposite side walls. When the cracking gas is ignited at the first burner 312, the cracking gas can be burned as fully as possible in the conversion furnace chamber 311, and the possibility of incompletely burned cracking gas being discharged from the third exhaust assembly 314 is eliminated, so that the gas reaching the third exhaust assembly 314 is all clean high-temperature gas, rather than toxic gas.

[0311] Optionally, the second burner 313 is disposed on the top wall of the converter shell 310 .

[0312] In an embodiment of the present application, the second burner 313 is arranged on the top wall of the conversion furnace shell 310, and the first burner 312 and the third exhaust assembly 314 are arranged on two opposite side walls of the conversion furnace shell 310 along the front and rear directions, that is, the first burner 312, the second burner 313 and the third exhaust assembly 314 are respectively arranged on different wall surfaces of the conversion furnace shell 310, so that the structural layout of the thermal energy conversion combustion furnace 3 is more reasonable, avoiding the problems such as reduced structural strength that may exist due to the concentrated arrangement of the first burner 312, the second burner 313 and the third exhaust assembly 314.

[0313] Optionally, the third exhaust assembly 314 includes at least two exhaust ports and a switching valve, at least two exhaust ports are arranged on the conversion furnace shell 310, and the switching valve is arranged at the at least two exhaust ports. At least two exhaust ports can be connected to the conversion furnace chamber 311 through the switching valve.

[0314] In the embodiment of the present application, the third exhaust assembly 314 includes at least two exhaust ports and a switching valve. For the clean heat source generated after the cracking gas is fully burned, that is, the high-temperature hot gas, there are multiple options for the destination of the high-temperature hot gas to meet the distribution and utilization of the high-temperature hot gas. For example, it can be transported to other components of the continuous recycling system of fiber-reinforced composite materials. For example, when the waste regeneration equipment also includes a superheated steam generator 2 and a conveyor-type pyrolysis furnace, the high-temperature hot gas can be selectively transported to the superheated steam generator 2 and / or the conveyor-type pyrolysis furnace, and can be used as a heat source or supplementary heat source for the superheated steam generator 2 and the conveyor-type pyrolysis furnace.

[0315] For example, the switching valve may include an electrically-actuated butterfly valve.

[0316] The third exhaust assembly 314 also includes a pressure sensor to further meet the distribution and utilization of high-temperature hot air.

[0317] When the number of exhaust ports is two, one exhaust port is connected to the superheated steam generator 2 through a pipeline, and the other exhaust port is connected to the conveyor-type pyrolysis furnace through a pipeline, and the conversion furnace chamber 311 can be connected to at least one of the two exhaust ports through a switching valve, so that the connection mode can be adjusted by the switching valve in different working stages. Specifically, the conversion furnace chamber 311 can be connected to only one of the superheated steam generator 2 and the conveyor-type pyrolysis furnace, or the conversion furnace chamber 311 can be connected to both the superheated steam generator 2 and the conveyor-type pyrolysis furnace, which can be set according to actual needs, and the setting of the switching valve provides multiple options for actual needs.

[0318] Implementation Method 17

[0319] The seventeenth embodiment of the present application is further improved based on the sixteenth embodiment, specifically: Fig.10 As shown, the thermal energy conversion combustion furnace 3 further includes a safety cap 316 , which is arranged on the conversion furnace shell 310 .

[0320] In an embodiment of the present application, when the control component 15 fails to control the internal pressure of the conversion furnace chamber 311, resulting in the internal pressure of the conversion furnace chamber 311 being too high, the safety cap 316 can be used to automatically release the pressure by physical means, thereby further ensuring the safety of the operation of the thermal energy conversion combustion furnace 3.

[0321] The inventors of the present application have found that after the thermal energy conversion combustion furnace 3 is used, water often accumulates in the pipeline for conveying cracked gas. If the accumulated water cannot be removed, it will easily affect the conveying efficiency of the cracked gas and the processing efficiency of the continuous recovery system of the fiber reinforced composite material.

[0322] In view of this, the thermal energy conversion combustion furnace 3 further includes a dripping hole 317 , and the dripping hole 317 is arranged on the conversion furnace shell 310 .

[0323] In an embodiment of the present application, the cracking gas is transported to the first burner 312 through a pipeline, and water is easily accumulated in the pipeline. By setting a drip hole 317 on the converter shell 310, the accumulated water in the pipeline can be discharged into the converter chamber 311 through the drip hole 317, and cleaned at a temperature of 900°C, thereby solving the problem of water accumulation in the pipeline, ensuring the integrity of the continuous recovery system of fiber reinforced composite materials, and eliminating the problem of cracking gas leakage, thereby ensuring that the transportation efficiency of the cracking gas and the processing efficiency of the continuous recovery system of fiber reinforced composite materials are not affected.

[0324] The inventors of the present application have discovered that when the thermal insulation performance of the heat conversion combustion furnace 3 is not good enough, the heat in the conversion furnace chamber 311 will diffuse outward from the conversion furnace shell 310. This part of the heat cannot act on the effective decomposition of the cracking gas, resulting in unnecessary heat loss.

[0325] To this end, the thermal energy conversion combustion furnace 3 further includes a third thermal insulation layer 318 , which is arranged on the inner wall of the conversion furnace shell 310 .

[0326] In an embodiment of the present application, the third insulation layer 318 is arranged on the inner wall of the conversion furnace shell 310, and the cracking gas will be fully burned in the combustion zone formed by the third insulation layer 318. The generated heat cannot be easily transmitted to the external environment through the third insulation layer 318, so that the cracking gas can be effectively decomposed in a stable temperature environment, thereby forming clean high-temperature hot gas, avoiding pollution to the environment. At the same time, it can also provide a clean heat source with a higher temperature as much as possible, provide sufficient heat source support for other components of the continuous recovery system of fiber reinforced composite materials, and improve the recovery rate.

[0327] The inventors of the present application have discovered that when the conversion furnace chamber 311 of the thermal energy conversion combustion furnace 3 does not have visualization performance, it is difficult to detect problems in time during the combustion process, which often leads to serious consequences and is inconvenient for maintenance and operation.

[0328] To this end, a perspective window 319 is provided on the converter shell 310 , and the perspective window 319 is detachably provided on the converter shell 310 .

[0329] In an embodiment of the present application, a perspective window 319 is provided on the conversion furnace shell 310, and the perspective window 319 can realize the visualization of the interior of the conversion furnace cavity 311. The user can intuitively observe the combustion status inside the conversion furnace cavity 311 through the perspective window 319. If there is an abnormality in the combustion process, it can be dealt with in time, for example, shutting down immediately to avoid serious consequences.

[0330] Furthermore, the perspective window 319 is detachably provided on the converter shell 310. When the user needs to repair the components in the converter cavity 311, the repair can be performed through the perspective window 319, thereby simplifying the difficulty of repair.

[0331] It is obvious 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 features of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A continuous recycling system for fiber-reinforced composite materials, characterized in that: include: A conveyor-type pyrolysis furnace, wherein the conveyor belt of the conveyor-type pyrolysis furnace is connected to a feeding device, and an air curtain device is provided at the inlet and outlet of the conveyor belt, and the air curtain device is used to release superheated steam to generate an air curtain and heat the fiber-reinforced composite material; a superheated steam generator connected to the air curtain device of the conveyor-type pyrolysis furnace and used for conveying superheated steam to the air curtain device; A heat energy conversion combustion furnace is connected to the cracking gas outlet of the conveyor belt pyrolysis furnace and is used to ignite the cracking gas from the conveyor belt pyrolysis furnace; the heat energy conversion combustion furnace is also connected to the superheated steam generator and is used to feed the burned heat source gas into the superheated steam generator so that the superheated steam generator produces the superheated steam; A conveyor-type carbon removal furnace connected to the conveyor-type pyrolysis furnace, used to perform carbon removal treatment on the fiber-reinforced composite material after pyrolysis by the conveyor-type pyrolysis furnace, and output fiber precursors; The thermal energy conversion combustion furnace is also connected to the pyrolysis furnace body of the conveyor belt pyrolysis furnace to transport heat source gas into the conveyor belt pyrolysis furnace for supplementary heating; The decarbonization exhaust outlet of the conveyor-type decarbonization furnace is connected to the thermal energy conversion combustion furnace, and is used to transport the decarbonization gas to the thermal energy conversion combustion furnace to produce the heat source gas; The fiber reinforced composite material continuous recycling system also includes: An oxidizing gas conveying device, wherein the oxidizing gas conveying device is respectively connected to the superheated steam generator and the conveyor-type carbon removal furnace; The superheated steam generator conveys the used heat source gas to the oxidizing gas conveying device, and then conveys the used heat source gas to the conveyor-type carbon removal furnace via the oxidizing gas conveying device for carbon removal operation.

2. The fiber-reinforced composite material continuous recycling system according to claim 1, characterized in that: The oxidizing gas delivery device also includes: a shell, the shell comprising a heat exchange cavity; A first air inlet and a first air outlet are respectively arranged on the shell and communicated with the heat exchange cavity, and the first air inlet is used to input the oxidizing gas to be heated; A second air inlet and a second air outlet are respectively arranged on the shell and communicated with the heat exchange cavity. The second air inlet is used for inputting heat source gas.

3. The fiber-reinforced composite material continuous recycling system according to claim 2, characterized in that: The first air inlet and the first air outlet are respectively arranged on two adjacent walls of the housing; and / or The second air inlet and the second air outlet are respectively arranged on two adjacent wall surfaces of the shell.

4. The fiber-reinforced composite material continuous recycling system according to claim 3, characterized in that: The housing comprises: A top wall and a bottom wall are arranged in a vertical direction, the second air inlet is arranged on the bottom wall, and the first air outlet is arranged on the top wall; A plurality of side walls are arranged between the top wall and the bottom wall, the first air inlet is arranged on one of the plurality of side walls, and the second air outlet is arranged on another one of the plurality of side walls.

5. The fiber-reinforced composite material continuous recycling system according to claim 4, characterized in that: The first air inlet and the second air outlet are coaxially arranged; and / or The second air inlet and the first air outlet are coaxially arranged; A flow cross-sectional area of ​​any one of the first air inlet and the first air outlet is smaller than a flow cross-sectional area of ​​any one of the second air inlet and the second air outlet.

6. The fiber-reinforced composite material continuous recycling system according to claim 3, characterized in that: The oxidizing gas delivery device also includes: A first air inlet pipe is provided on the shell and communicates with the heat exchange chamber through the first air inlet; and / or A first air outlet pipe is provided on the shell and communicates with the heat exchange chamber through the first air outlet; and / or A second air inlet pipe is provided on the shell and communicates with the heat exchange chamber through the second air inlet; and / or a second air outlet pipe, disposed on the shell and connected to the heat exchange chamber through the second air outlet; a fourth heat-insulating layer, provided on the shell and located in the heat exchange cavity; The support member is arranged on the bottom wall of the shell.

7. The fiber-reinforced composite material continuous recycling system according to any one of claims 1 to 6, characterized in that: The conveyor belt pyrolysis furnace comprises: A pyrolysis furnace body and a conveyor belt arranged through the pyrolysis furnace body; A cracking gas extraction device, arranged on the pyrolysis furnace body, for extracting cracking gas generated by pyrolysis of the fiber reinforced composite material in the pyrolysis furnace body; An air curtain device is arranged at the inlet and outlet of the conveyor belt, and is used for releasing superheated steam to generate an air curtain and heat the fiber-reinforced composite material.

8. The fiber-reinforced composite material continuous recycling system according to claim 7, characterized in that: The conveyor belt comprises: A feeding side, a discharging side and a central conveying part, wherein the height of the part of the central conveying part supporting the material is greater than that of the part of the feeding side; A pyrolysis feed pipe and a pyrolysis discharge pipe are respectively connected to the pyrolysis furnace body; The conveyor belt enters the pyrolysis furnace body through the pyrolysis feed pipe, and then extends out of the pyrolysis furnace body through the pyrolysis discharge pipe; The pyrolysis feed pipe has a first angle with the horizontal plane, and the first angle is in the range of 10° to 35°.

9. The fiber-reinforced composite material continuous recycling system according to claim 8, characterized in that: The air curtain device comprises: An air inlet air curtain mechanism is arranged in the pyrolysis feed pipeline; The air inlet air curtain mechanism includes a plurality of air curtain nozzles, and the air curtain nozzles release superheated steam in the direction of the conveyor belt to generate an air curtain and heat the fiber reinforced composite material; The air curtain nozzles are arranged in at least two rows at intervals along the moving direction of the conveyor belt, and the jetting directions of the air curtain nozzles in two adjacent rows are staggered with each other.

10. The fiber reinforced composite material continuous recycling system according to claim 9, characterized in that: It also includes a cracking pipeline arranged in the pyrolysis furnace body; The two ends of the cracking pipeline are respectively connected to the pyrolysis feed pipeline and the pyrolysis discharge pipeline; The conveyor belt passes through the cracking pipe, and the fiber-reinforced composite material is cracked in the cracking pipe; A heating chamber is provided between the cracking pipeline and the pyrolysis furnace body, and the cracking gas extraction device passes through the heating chamber and is connected to the cracking pipeline; An auxiliary heating device is provided in the heating chamber; The auxiliary heating device comprises: A heat source inlet, passing through the outer wall of the pyrolysis furnace body and connected to the heating chamber, for introducing high-temperature gas into the heating chamber to heat the cracking pipe; A heat source outlet, passing through the outer wall of the pyrolysis furnace body and connected to the heating chamber, for discharging the high-temperature gas; An electric heating assembly, disposed on the inner wall of the pyrolysis furnace body and capable of heating at least a portion of the cracking pipe; The third temperature sensor is used to measure the temperature in the cracking pipe, and the third temperature sensor is communicatively connected with the electric heating component.

11. The fiber reinforced composite material continuous recycling system according to claim 10, characterized in that: The cracking gas extraction device comprises: A cracking gas outlet is provided on the pyrolysis furnace body and is connected to the cracking pipeline for releasing the cracking gas; A pressure controller connected to the cracking gas outlet and configured to adjust the gas pressure in the cracking pipeline by controlling the gas flow rate of the cracking gas outlet; The pressure controller comprises: A pyrolysis pressure sensor is disposed in the cracking pipeline and detects the pressure in the cracking pipeline; A pyrolysis blower is communicatively connected with the pyrolysis pressure sensor, and the pyrolysis blower is arranged facing the cracking gas outlet; A pressure relief pipe connected to the cracked gas outlet, the pyrolysis blower is installed in the pressure relief pipe, and the blowing direction of the pyrolysis blower is toward the direction of the cracked gas outlet; A pyrolysis one-way valve is arranged in the pressure relief pipeline.

12. The continuous recycling system of fiber reinforced composite materials according to any one of claims 1 to 6, characterized in that: The conveyor type carbon removal furnace comprises: A carbon removal furnace body and a conveyor belt device arranged through the carbon removal furnace body; A temperature control device is connected to the decarbonization furnace body and adjusts the temperature of the decarbonization furnace body; An oxidizing gas delivery device, comprising a plurality of decarbonization gas delivery pipelines connected to the decarbonization furnace body, for introducing oxidizing gas into the decarbonization furnace body; The exhaust device is arranged on the top of the decarbonization furnace body and is used to extract the gas in the decarbonization furnace body. The exhaust device keeps the decarbonization furnace body in a negative pressure state.

13. The fiber reinforced composite material continuous recycling system according to claim 12, characterized in that: The conveyor belt device comprises: A mesh belt, wherein the mesh belt has a plurality of ventilation holes: A carbon removal driving mechanism, used for driving the mesh belt to move along the length direction of the carbon removal furnace body; The carbon removal gas supply pipeline is connected to the bottom of the mesh belt and supplies the oxidizing gas in the direction of the mesh belt; The carbon removal gas supply pipeline comprises: A plurality of main pipelines, wherein the main pipelines are connected to the decarbonization furnace body from the outside of the decarbonization furnace body; At least two branch pipes are arranged at intervals along the length direction or the width direction of the mesh belt, and the branch pipes are provided with a plurality of air jets distributed along the length direction thereof.

14. The fiber-reinforced composite material continuous recycling system according to claim 13, characterized in that: The temperature control device comprises: A heating chamber, the heating chamber is arranged on the inner wall of the carbon removal furnace body, a first electric heating device is arranged in the heating chamber, and the first electric heating device is used to heat the inner space of the carbon removal furnace body; the main pipeline passes through the heating chamber and is heated by the heating chamber, and at least a part of the main pipeline is folded into an S shape in the heating chamber; A first temperature sensor is disposed in the heating chamber and is in communication connection with the first electric heating device; A second electric heating device, the second electric heating device is arranged in the decarbonizing furnace body; A second temperature sensor is disposed in the decarbonizing furnace body and is in communication connection with the second electric heating device.

15. The fiber reinforced composite material continuous recycling system according to claim 14, characterized in that: Also includes: a decarbonization pressure sensor, which is arranged in the decarbonization furnace body and detects the pressure in the furnace; the decarbonization pressure sensor is in communication connection with the exhaust device and / or the oxidizing gas delivery device; the exhaust device and / or the oxidizing gas delivery device adjust the pressure in the decarbonization furnace body by controlling the flow rate of the gas; A carbon removal discharge pipe connected to the carbon removal furnace body; The mesh belt extends out of the decarbonization furnace body through the decarbonization discharge pipe; The carbon removal discharge pipe has a first angle with the horizontal plane, and the first angle is in the range of 10° to 35°.

16. The fiber reinforced composite material continuous recycling system according to any one of claims 1 to 6, characterized in that: The superheated steam generator comprises: An inner liner, wherein the inner liner has a mounting cavity; An outer liner is arranged on a side of the inner liner away from the installation cavity, and a steam channel is provided between the outer liner and the inner liner; a heating element, at least a portion of which is located in the mounting cavity; Wherein, the control component of the fiber reinforced composite material continuous recycling system also includes a temperature control unit, and the temperature control unit is connected to the heating element.

17. The fiber reinforced composite material continuous recycling system according to claim 16, characterized in that: The heating element comprises a first heating element and a second heating element, and the temperature control unit is arranged on the first heating element and / or the second heating element; The steam channel comprises: a first steam channel, the first steam channel comprising an inlet, the first heating element being used for heating the first steam channel; a second steam channel, communicating with the first steam channel, the second steam channel comprising a steam outlet, and the second heating element being used for heating the second steam channel; At least a portion of the second steam passage extends in a zigzag manner relative to the first steam passage; The first steam channel extends along a first direction; The second steam channel includes a communication channel and an exhaust channel, the exhaust channel is communicated with the first steam channel through the communication channel, the exhaust channel extends along the first direction, and the communication channel extends along a second direction different from the first direction.

18. The fiber-reinforced composite material continuous recycling system according to claim 16, characterized in that: The superheated steam generator also includes: A generator housing, wherein the generator housing has an assembly cavity, and at least a portion of the inner liner and at least a portion of the outer liner are located in the assembly cavity; A second heat-insulating layer is disposed in the assembly cavity and between the outer liner and the generator housing; A plurality of reinforcing ribs are arranged at intervals on the generator housing; A drainage assembly is provided, wherein the drainage assembly is capable of communicating with the steam passage.

19. The fiber reinforced composite material continuous recycling system according to any one of claims 1 to 6, characterized in that: The thermal energy conversion combustion furnace comprises: A conversion furnace shell, wherein the conversion furnace shell has a conversion furnace cavity; a first burner, disposed on the converter furnace shell and connected to the converter furnace chamber, the first burner being used to ignite the pyrolysis gas; A second burner, disposed on the converter furnace shell and connected to the converter furnace chamber, the second burner being used to ignite the gas; A third exhaust assembly is disposed on the converter furnace shell and is communicated with the converter furnace chamber.

20. The fiber reinforced composite material continuous recycling system according to claim 19, characterized in that: The first burner and the third exhaust assembly are arranged on two opposite side walls of the converter shell; The second burner is arranged on the top wall of the converter shell; The third exhaust assembly comprises: at least two exhaust ports provided on the converter shell; A switching valve is provided at at least two exhaust ports, and the at least two exhaust ports can be connected to the conversion furnace chamber through the switching valve; The control component of the fiber reinforced composite material continuous recycling system is also used to regulate the internal temperature of the conversion furnace chamber and / or the internal pressure of the conversion furnace chamber.

21. The fiber-reinforced composite material continuous recycling system according to claim 19, characterized in that: The thermal energy conversion combustion furnace also includes: A safety cap, arranged on the converter shell; A drip hole is provided on the converter shell; A third heat-insulating layer is provided on the inner wall of the converter shell; The converter shell is provided with a perspective window, and the perspective window is detachably arranged on the converter shell.

Images