Device and method for recovering carbon fiber and glass fiber

Abstract

To provide a device and a method for recovering carbon fiber or glass fiber from used waste blades.SOLUTION: The present invention comprises a waste composite material supply unit, a reaction unit, a heat supply unit, a modification unit, and a separation unit, and enables the crushing, rolling, primary pyrolysis, and secondary pyrolysis of waste composite materials in a single process, as well as the separation into carbon fibers and glass fibers.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a device and method for recovering carbon fibers and glass fibers.

Background Art

[0002] Wind power generation is a power generation method that rotates blades with the kinetic energy of wind to convert it into mechanical energy and then converts the mechanical energy into electrical energy. Its utilization is increasing as an alternative to existing power generation methods that mainly use fossil fuels.

[0003] In a wind turbine, a plurality of blades are attached to the rotating shaft of the generator. In order to produce more electrical energy, the blades are made long and wide. The larger the size of the blade, the greater its weight. However, the blades must be made as light as possible for energy efficiency. Also, since the blades continuously collide with the wind, the strength of the blades must be improved and durability ensured. To solve such problems, carbon fiber reinforced plastic or glass fiber reinforced plastic is used as the material for the blades. Composite materials containing carbon fibers and glass fibers are light yet strong and are utilized in various fields such as the automotive and aviation industries in addition to blades.

[0004] However, after the blades of a wind turbine are damaged or their lifespan expires, the disposal of waste blades becomes a problem. Generally, composite materials such as carbon fiber reinforced plastic or glass fiber reinforced plastic are difficult to recycle and are mostly landfilled. However, it is impossible to continuously landfill the increasing composite material waste, and the need for treatment methods other than landfilling or recyclable methods has continuously emerged.

[0005] Therefore, there is a need to develop an apparatus and method for recovering carbon fibers or glass fibers from used waste blades. In addition to waste blades, there is also a need to develop an apparatus and method for recovering carbon fibers and glass fibers in waste composite materials discharged in the automotive industry, aviation industry, etc.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] An object of the present invention is to provide a method for recovering carbon fibers and glass fibers that can recover carbon fibers and glass fibers from waste composite materials in a single step.

[0008] Another object of the present invention is to provide a method for recovering carbon fibers and glass fibers that can recover fuel gas and fuel oil during the process of recovering carbon fibers and glass fibers from waste composite materials.

Means for Solving the Problems

[0009] The carbon fiber and glass fiber recovery device according to an embodiment of the present invention includes a waste composite material supply unit, a reaction unit, a heat supply unit, a reforming unit, and a separation unit. The waste composite material supply unit can include a crushing module that crushes the waste composite material and a storage module that stores the crushed waste composite material. The reaction unit can heat the waste composite material supplied from the waste composite material supply unit. The heat supply unit can provide heat to the reaction unit. The reforming unit can separate the pyrolysis gas discharged from the reaction unit into gas and oil. The separation unit can include a separation part that separates the product of the reaction unit into a first substance and a second substance, a first chamber that houses the first substance, and a second chamber that houses the second substance.

[0010] In the carbon fiber and glass fiber recovery device according to an embodiment of the present invention, the reaction unit can include one pyrolysis reactor. The pyrolysis reactor may be a batch pyrolysis reactor. Primary pyrolysis and secondary pyrolysis may be sequentially performed in the pyrolysis reactor.

[0011] In the carbon fiber and glass fiber recovery device according to an embodiment of the present invention, the reaction unit can include at least two pyrolysis reactors.

[0012] In the carbon fiber and glass fiber recovery device according to an embodiment of the present invention, the plurality of pyrolysis reactors may be batch pyrolysis reactors.

[0013] In the carbon fiber and glass fiber recovery device according to an embodiment of the present invention, the plurality of pyrolysis reactors may be continuous pyrolysis reactors.

[0014] In the carbon fiber and glass fiber recovery device according to an embodiment of the present invention, the reforming unit can include a catalyst tower, a heat exchanger, and a separation tank.

[0015] In the carbon fiber and glass fiber recovery device according to an embodiment of the present invention, the reforming unit may further include a cleaning tank and a pressure control tank.

[0016] In the carbon fiber and glass fiber recovery device according to an embodiment of the present invention, the separation unit may further include a first carding module for carding the first substance into a non-woven fabric, a first pelletizing module for pelletizing the first substance, a second carding module for carding the second substance into a non-woven fabric, and a second pelletizing module for pelletizing the second substance.

[0017] In the carbon fiber and glass fiber recovery device according to an embodiment of the present invention, the separation unit can detect the lengths of the first substance and the second substance, and when the lengths of the first substance and the second substance are 5 mm or less, the first pelletizing module and the second pelletizing module can be made to flow into them respectively.

[0018] In the carbon fiber and glass fiber recovery device according to an embodiment of the present invention, the heat supply unit may include a burner, a heat exchanger, a blower, a scrubber, and a chimney.

[0019] The carbon fiber and glass fiber recovery method according to an embodiment of the present invention includes a waste composite material supply step of supplying a waste composite material into a reactor, a first heating step of primarily heating the waste composite material, a second heating step of secondarily heating the primarily heated waste composite material, an oil extraction step of extracting oil from the pyrolysis gas discharged from the first heating step, and a separation step of separating the result of the second heating step into a first substance and a second substance.

[0020] In the carbon fiber and glass fiber recovery method according to an embodiment of the present invention, the first heating step and the second heating step may be sequentially performed in one pyrolysis reactor.

[0021] In the method for recovering carbon fibers and glass fibers according to an embodiment of the present invention, the first heating step may be performed in a primary pyrolysis reactor, and the second heating step may be performed in a secondary pyrolysis reactor.

[0022] In the method for recovering carbon fibers and glass fibers according to an embodiment of the present invention, the heat sources in the first heating step may be pyrolysis gas and LNG / LPG, and the heat source in the second heating step may be combustion gas.

[0023] In the method for recovering carbon fibers and glass fibers according to an embodiment of the present invention, a zeolite-based catalyst can be used for reforming the decomposition gas.

[0024] In the method for recovering carbon fibers and glass fibers according to an embodiment of the present invention, the reformed pyrolysis gas can be cooled and separated into gas and oil.

[0025] In the separation step of the method for recovering carbon fibers and glass fibers according to an embodiment of the present invention, the first and second substances can be separated by a density difference.

[0026] In the separation step of the method for recovering carbon fibers and glass fibers according to an embodiment of the present invention, the first and second substances may be granulated after being made into non-woven fabrics respectively.

[0027] In the separation step of the method for recovering carbon fibers and glass fibers according to an embodiment of the present invention, the lengths of the first and second substances are detected, and when the lengths of the first and second substances are 5 mm or less, they may be granulated respectively.

[0028] The method for recovering carbon fibers and glass fibers according to an embodiment of the present invention may further include a step of crushing the waste composite material and a step of drying the crushed waste composite material with hot air before the waste composite material supply step.

Advantages of the Invention

[0029] According to an embodiment of the present invention, carbon fibers or glass fibers can be effectively separated from waste composite materials.

[0030] According to an embodiment of the present invention, the pyrolysis gas generated during the recovery process of carbon fibers and glass fibers can be recycled as fuel.

Brief Description of the Drawings

[0031]

Figure 1

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Figure 8

Embodiments for Carrying Out the Invention

[0032] Although the present invention can have various embodiments with various transformations applied, specific embodiments will be illustrated and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that all transformations, equivalents, or alternatives included within the spirit and technical scope of the present invention are included.

[0033] The terms used in the present invention are merely used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present invention, terms such as "including" or "having" are intended to specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and it should be understood that the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

[0034] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. At this time, it should be noted that in the accompanying drawings, the same components are represented by the same reference numerals as much as possible. Also, detailed descriptions of well-known functions and configurations that may obscure the gist of the present invention are omitted. For the same reason, in the accompanying drawings, some components are exaggerated, omitted, or shown schematically.

[0035] FIG. 1 is a block diagram schematically showing a recovery apparatus for carbon fibers and glass fibers according to an embodiment of the present invention, FIG. 2 is a diagram schematically showing a waste composite material supply unit and a reaction unit in the recovery apparatus for carbon fibers and glass fibers according to an embodiment of the present invention, FIG. 3 is a diagram showing that two pyrolysis reactors according to an embodiment of the present invention are stacked, FIG. 4 is a diagram schematically showing a waste composite material supply unit, a reaction unit, and a heat supply unit in the recovery apparatus for carbon fibers and glass fibers according to an embodiment of the present invention, FIG. 5 is a diagram schematically showing a reaction unit, a heat supply unit, and a reforming unit in the recovery apparatus for carbon fibers and glass fibers according to an embodiment of the present invention, and FIG. 6 is a diagram schematically showing a reaction unit and a separation unit in the recovery apparatus for carbon fibers and glass fibers according to an embodiment of the present invention.

[0036] As shown in FIG. 1, a recovery apparatus 1000 for carbon fibers and glass fibers according to the present invention includes a waste composite material supply unit 1100, a reaction unit 1200, a heat supply unit 1300, a reforming unit 1400, and a separation unit 1500.

[0037] The waste composite material supply unit 1100 supplies a waste composite material to the reaction unit 1200. The waste composite material supply unit 1100 can pre-treat the waste composite material into a state suitable for pyrolysis and supply it to the reaction unit 1200.

[0038] As shown in FIG. 2, the waste composite material supply unit 1100 includes a crushing module 1110, a conveying module 1120, a storage module 1130, and an input module 1140. The crushing module 1110 crushes the collected waste composite material into a predetermined size. Since the waste composite material can be as long as 50 m in length, it is not easy to crush it immediately. Therefore, after cutting the waste composite material in the longitudinal direction, it is put into the crushing module 1110. The waste composite material can be cut to a length of 10 m or less, and a wire saw or the like can be used.

[0039] The crushing module 1110 crushes the waste composite material cut to a predetermined length so that the thickness becomes 20 mm or less. A large amount of dust is generated during the crushing process of the waste composite material. The input part of the crushing module 1110 can be sealed so that dust does not flow out to the outside of the crushing module 1110.

[0040] In addition, the crushing module 1110 can be provided with a dust suction part in order to remove the dust generated during the crushing process. In order to collect dust, air can be continuously circulated within the crushing module 1110.

[0041] In order to make the size of the crushed waste composite material smaller, in other embodiments, the crushed waste composite material may be rolled again.

[0042] The conveying module 1120 conveys the crushed waste composite material to the next process. A conveyor may be used to convey the waste composite material to each unit and each module within the recovery process. A plurality of conveyors may be provided continuously or in parallel along the movement path of the waste composite material. The waste composite material may be screened during conveyance.

[0043] The crushed waste composite materials have different particle sizes respectively. When waste composite materials with different particle sizes are pyrolyzed, the small-sized blade fragments are carbonized earlier, which may contaminate the pyrolysis products. For this reason, the crushed waste blades can be filtered on a screen, and when the size of the crushed particles is below a predetermined size, they can be separated below the screen.

[0044] On the other hand, the crushing module 1110 can adjust the crushing size of the waste composite material. The crushing size of the waste composite material can be adjusted according to the target state of the waste composite material and the final product. When long fibers can be recovered, the crushing size of the waste blades can be increased.

[0045] The conveying module 1120 conveys the crushed waste composite material to the storage module 1130. The storage module 1130 stores the waste composite material for a predetermined period before it is fed into the reactor. Hot air is supplied to the storage module 1130 so that the stored waste composite material can be dried.

[0046] Although the crushed waste composite material contains moisture, water vapor is generated during the pyrolysis process. Drying the waste composite material can reduce the generation of water vapor. The hot air can be transmitted from the heat supply unit 1300 described later.

[0047] In this embodiment, the waste composite material is stored in the storage module 1130 via the crushing module. However, depending on the size of the waste composite material and the size of the pyrolysis reactor of the reaction unit 1200, the waste composite material may be directly stored in the storage module without passing through the crushing module and then fed into the reaction unit.

[0048] The feeding module 1140 feeds the waste composite material into the reactor 1210 of the reaction unit 1200. A single-screw feeder can be used to feed the crushed waste composite material. The feeding module 1140 can feed the waste composite material into the reactor 1210 either singly or continuously.

[0049] On the other hand, it is necessary to lower the temperature of the waste composite material placed in the feeding module 1140. Cooling jackets can be arranged on the bottom and side surfaces of the feeding module 1140 to cool the waste composite material. The pyrolysis reactor connected to the lower part of the feeding section is in a high-temperature state due to the high-temperature gas flowing inside. By arranging cooling jackets on the bottom and side surfaces of the feeding module 1140, the heat released from the pyrolysis reactor is transmitted to the feeding module 1140, and before the waste composite material is fed into the pyrolysis reactor, a fire can be prevented from occurring in the waste blade located in the feeding module 1140. The cooling jacket can receive cold water from the cooling tower of the reforming unit to lower the temperature of the waste composite material to be fed.

[0050] The reaction unit 1200 pyrolyzes the waste composite material. To pyrolyze the waste composite material, the pyrolysis reactor 1210 of the reaction unit 1200 receives the waste composite material from the supply module 1100. The reaction unit 1200 includes at least one or more pyrolysis reactors 1210, 1210'.

[0051] The pyrolysis reactors 1210, 1210' are provided with a space for accommodating the waste composite material inside, and are heated directly or indirectly by a burner. In the present invention, the waste composite material may be indirectly heated.

[0052] For example, the pyrolysis reactors 1210, 1210' can include an outer casing and an inner casing. High-temperature gas can flow inside the outer casing. The high-temperature gas can be generated by a burner arranged outside the outer casing. The burner can burn pyrolysis gas and LNG / LPG to generate combustion gas. The generated high-temperature combustion gas is supplied into the outer casing. The temperature of the combustion gas may be 400 - 500°C.

[0053] The inner casing is accommodated inside the outer casing and receives the waste composite material from the waste composite material supply module. The waste composite material is pyrolyzed inside the inner casing. When pyrolyzing the waste composite material, flue gas can be injected into and discharged from the inner casing to maintain a reducing atmosphere. The inner casing may be cylindrical. Inside the inner casing, a screw or the like for moving and mixing the waste composite material may be arranged.

[0054] For efficient pyrolysis, it is necessary to uniformly mix the waste composite material with air. For mixing the waste composite material, the inner casing can rotate, or a screw arranged inside the inner casing can rotate. The rotation speed of the inner casing or the screw can be changed according to the target residence time of the waste composite material.

[0055] The smaller the diameter of the inner casing, the better the heat transfer efficiency. However, if the diameter becomes smaller, there is a problem that the processing capacity also becomes smaller. To solve such a problem and for effective heat transfer to the waste composite material, baffles may be arranged on the inner wall of the inner casing. A plurality of baffles can be arranged on the inner wall of the inner casing at intervals in the longitudinal direction and the circumferential direction. In the present embodiment, the pyrolysis reactors 1210 and 1210' have been described as an example, but the present invention is not limited thereto, and pyrolysis reactors of various forms and capacities may be used.

[0056] On the other hand, the waste composite material introduced into the pyrolysis reactor 1210 is pyrolyzed in the pyrolysis reactor 1210. The pyrolysis step can go through a primary pyrolysis step and a secondary pyrolysis step. By primary pyrolysis, resins such as epoxy and wood contained in the waste composite material are gasified. By secondary pyrolysis, the resins and char remaining in the carbon fiber and glass fiber mass are decomposed.

[0057] The primary pyrolysis and the secondary pyrolysis may be carried out in one pyrolysis reactor or two or more pyrolysis reactors. The primary pyrolysis reactor and the secondary pyrolysis reactor may be reactors of the same form, but reactors of different forms may also be used. For example, the primary pyrolysis reactor may be a rotary kiln, and the secondary pyrolysis reactor may be a screw type. The internal temperature of the primary and secondary pyrolysis reactors 1210 and 1210' may be 400 to 500°C.

[0058] In one embodiment, the primary pyrolysis and the secondary pyrolysis may be carried out in one pyrolysis reactor 1210. At this time, the pyrolysis reactor 1210 may be a batch pyrolysis reactor. A predetermined amount of the waste composite material is introduced into the pyrolysis reactor 1210, and the primary pyrolysis and the secondary pyrolysis are sequentially carried out in the pyrolysis reactor 1210. After the primary pyrolysis is carried out, impurities such as char are screened, and the secondary pyrolysis may be continuously carried out in the pyrolysis reactor 1210. The burner during the primary pyrolysis receives the pyrolysis gas and LNG or LPG from the fuel tank, and the burner during the secondary pyrolysis can receive the combustion gas from the primary pyrolysis reactor.

[0059] In other embodiments, two pyrolysis reactors 1210, 1210' may be arranged in series to perform primary pyrolysis and secondary pyrolysis respectively. At this time, each of the pyrolysis reactors 1210, 1210' may be a batch pyrolysis reactor. The primary pyrolysis is carried out in the primary pyrolysis reactor 1210, and the secondary pyrolysis is carried out in the secondary pyrolysis reactor 1210'. A predetermined amount of waste composite material is fed into the primary pyrolysis reactor 1210 for primary pyrolysis. When the primary pyrolysis is completed, the primary pyrolysis product is screened for impurities such as char and then transferred to the secondary pyrolysis reactor. The secondary pyrolysis is carried out in the secondary pyrolysis reactor 1210'. The burner during primary pyrolysis can receive pyrolysis gas and LNG or LPG from the fuel tank, and the burner during secondary pyrolysis can receive combustion gas from the primary pyrolysis reactor.

[0060] In other embodiments, two pyrolysis reactors 1210, 1210' are arranged in series to perform primary pyrolysis and secondary pyrolysis respectively, and each of the pyrolysis reactors 1210, 1210' may be a continuous pyrolysis reactor. A predetermined amount of waste composite material is continuously fed into the primary pyrolysis reactor 1210 for primary pyrolysis. The primary pyrolysis product discharged from the primary pyrolysis reactor 1210 is continuously fed into the secondary pyrolysis reactor 1210' after impurities such as char are screened. The secondary pyrolysis is carried out in the secondary pyrolysis reactor 1210', and the resin and char remaining in the carbon fiber and glass fiber mass are decomposed.

[0061] In other embodiments, considering the residence time of the waste composite material in the reactor, the size of the waste composite material fed, etc., two or more primary pyrolysis reactors 1210 may be connected and used. For example, the reaction unit 1200 may also include two primary pyrolysis reactors 1210, 1210 and one secondary pyrolysis reactor 1210' to ensure the residence time during primary pyrolysis.

[0062] The primary pyrolysis reactor 1210 and the secondary pyrolysis reactor 1210' may be connected horizontally or vertically. As shown in FIG. 3, when a plurality of pyrolysis reactors 1210, 1210' are connected vertically, there is an advantage that the size of the entire plant can be reduced and the degree of freedom in design can be increased.

[0063] During primary pyrolysis, the oxygen concentration in the primary pyrolysis reactor 1210 must be maintained at 10% or less. A sensor can be arranged inside the primary pyrolysis reactor 1210 to continuously measure the oxygen concentration. In other embodiments, a sensor may be arranged in the exhaust line to measure the oxygen concentration in the exhausted gas.

[0064] During primary pyrolysis, the residence time of the waste composite material crushed product in the primary pyrolysis reactor 1210 may be 9 hours or less. When the residence time exceeds 9 hours, the reactants may be excessively carbonized. The temperature inside the primary pyrolysis reactor 1210 may be 400 - 500 °C. The heat source for primary pyrolysis may be pyrolysis gas and LNG / LPG.

[0065] As a result of primary pyrolysis, resins such as epoxy and wood contained in the waste composite material are gasified in the primary pyrolysis reactor 1210, and carbon fiber and glass fiber lumps remain. At this time, the resin that has not yet been gasified is carbonized (char) and remains on the surface of the carbon fiber and glass fiber.

[0066] As a result of the first pyrolysis process, in addition to gas and char, oil vapor is generated. The oil vapor is cooled while passing through the reforming unit 1400 described later, and part of it can be extracted as gas and part as oil. The oil vapor can be cooled by water. The gas generated from the oil vapor has a calorific value and flows into the gas tank of the heat supply unit 1300 and can be used as an indirect heat source for secondary pyrolysis.

[0067] Part of the char remaining in the carbon fiber and glass fiber mass can be removed by screening. The product of the primary pyrolysis discharged from the primary pyrolysis reactor 1210 may be screened before the secondary pyrolysis. The carbon fiber, glass fiber and part of the char are separated by a screen. As the screen for separating the char, for example, one with a mesh diameter of 50 mm or less can be used.

[0068] The secondary pyrolysis may be carried out in a secondary pyrolysis reactor. The secondary pyrolysis is a combustion reaction. The carbon fiber and glass fiber mass with part of the char removed moves to the secondary pyrolysis reactor 1210'. In this step, there may be char attached between the carbon fibers and glass fibers. In the secondary pyrolysis process, a combustion gas containing about 10% oxygen burns the residual epoxy and char. The residual epoxy and char are removed by the secondary pyrolysis process, that is, the combustion process, and only the carbon fiber and glass fiber remain.

[0069] The heat source for the secondary pyrolysis may be a combustion gas. The temperature of the combustion gas injected into the secondary pyrolysis reactor 1210' may be 500 - 600 °C, preferably 500 °C. The oxygen concentration in the combustion gas may be about 10%. Due to the combustion reaction in the secondary pyrolysis reactor, the resin and char remaining in the carbon fiber and glass fiber mass are decomposed.

[0070] Part of the exhaust gas discharged from the secondary pyrolysis reactor 1210' can supply hot air to the storage module 1130 through the heat exchanger of the heat supply unit 1300. Thereby, the moisture of the crushed waste composite material can be reduced.

[0071] The residence time of the carbon fiber and glass fiber mass in the secondary pyrolysis reactor 1210' may be 3 hours or less. At this time, if the oxygen concentration in the secondary pyrolysis reactor 1210' is high, oxidation of the object to be heated may occur, so the oxygen concentration is maintained at 10% or less.

[0072] The oxygen concentration inside the secondary pyrolysis reactor 1210' can be adjusted by a blower fan and a mixer (not shown).

[0073] External air can be introduced into the secondary pyrolysis reactor 1210' by the blower fan. The mixer can control the oxygen concentration to 10% or less by mixing 70 - 80% of combustion gas and 20 - 30% of external air. For this purpose, a plurality of sensors are installed inside the secondary pyrolysis reactor 1210' to continuously sense the oxygen concentration. If the oxygen concentration exceeds 15%, the mixing ratio of the combustion gas can be increased; if the oxygen concentration is less than 7%, the mixing ratio of the external air can be increased to adjust the oxygen concentration. In this embodiment, sensors are arranged inside the secondary pyrolysis reactor 1210'. In other embodiments, sensors may be arranged in the exhaust line to measure the oxygen concentration in the exhausted gas.

[0074] As a result of the secondary pyrolysis, high - purity carbon fibers and glass fibers remain.

[0075] As shown in FIG. 4, the heat supply unit 1300 can include a burner 1310, a heat exchanger 1320, a blower 1330, a scrubber 1340, and a chimney 1350. The burner 1310 supplies the heat energy required for the pyrolysis reaction to the pyrolysis reactor 1210.

[0076] The heat energy required for the primary pyrolysis reaction may be supplied by the first burner. The first burner 1311 heats the primary pyrolysis reactor 1210 in an indirect heating mode so that heat is transferred to the inside of the reactor 1210. The heat source of the first burner 1311 may be pyrolysis gas and LNG / LPG. The gas tank supplies pyrolysis gas and LNG / LPG to the first burner. LNG / LPG can be used as an auxiliary heat source. The temperature can be finely adjusted by LNG / LPG.

[0077] By means of primary pyrolysis, resins such as epoxy and wood contained in the waste composite material are gasified, and pyrolysis gas is discharged. As a result of the primary pyrolysis, the carbon fiber and glass fiber lumps are combined with the resin and char that are not partially decomposed and become a solid state.

[0078] The heat energy required for the secondary pyrolysis reaction may be supplied by the second burner. The heat source of the second burner 1312 may be combustion gas. By means of secondary pyrolysis, the resin and char that are not partially decomposed are combusted, and the carbon fiber and glass fiber remain.

[0079] When the primary pyrolysis and the secondary pyrolysis are carried out in one reactor, the first burner 1311 and the second burner 1312 may not be separate burners but one burner 1310. In this case, the fuel during the primary pyrolysis may be supplied with pyrolysis gas and LNG / LPG, and combustion gas may be supplied during the secondary pyrolysis.

[0080] The heat exchanger 1320 receives heat from the primary pyrolysis reactor 1210 and supplies hot air to the storage module 1130. The storage module 1130 stores the crushed waste composite material. Although the crushed waste composite material contains moisture, the moisture contained in the waste blade is reduced by the hot air. By means of the hot air, the amount of moisture in the waste composite material can be reduced to less than 10% of the total weight of the waste composite material to be input. The heat exchanger 1320 may be a shell-and-tube type heat exchanger.

[0081] The blower 1330 inhales the pyrolysis gas from the heat exchanger 1320 and flows it to the scrubber. If the gas discharged from the pyrolysis reactor 1210 immediately flows into the scrubber, the liquid contained in the scrubber will evaporate. To prevent this, the exhaust gas discharged from the pyrolysis reactor 1210 flows into the scrubber after the temperature is lowered to about 200 to 300 °C through the heat exchanger 1320.

[0082] Scrubber 1340 treats waste gas. As the scrubber 1340, a dust collector using an aqueous NaOH solution can be used. SOx / NOx, etc. in the combustion gas can be controlled by scrubbing with an aqueous NaOH solution. In this embodiment, a scrubber for cleaning and dust collection using an aqueous NaOH solution is used, but it is not limited thereto, and scrubbers such as a filtration method and an electrostatic method may also be used.

[0083] The chimney 1350 finally discharges waste gas and by-products. The chimney 1350 is configured to finally discharge air pollutants, and in the event of an emergency such as when air pollutants are detected above a predetermined amount, the air pollutants can be emergently controlled by flare stack ignition.

[0084] The chimney 1350 discharges the combustion gas discharged from the primary pyrolysis reactor and the secondary pyrolysis reactors 1210, 1210' to the outside of the apparatus.

[0085] In the present invention, the waste composite material may be subjected to crushing, pyrolysis, and separation of carbon fiber and glass fiber in one step, or may be moved to each unit by a conveyor. One or more conveyors can be coordinated to adjust the residence time in each unit.

[0086] As shown in FIG. 5, the reforming unit 1400 can include a catalyst tower 1410, a heat exchanger 1420, a separation tank 1430, a washing tank 1440, and a pressure control tank 1450. The reforming unit 1400 converts pyrolysis gas into oil. Approximately 30% of the total pyrolysis gas can be converted into pyrolysis oil. Thereby, the amount of fuel consumed for heating the pyrolysis reactor can be saved.

[0087] Reforming is to shorten high-molecular hydrocarbons, and in this embodiment, it is performed using a catalyst tower. Reforming using a catalyst can reduce the energy demand required for the process and optimize the overall process.

[0088] The catalyst tower 1410 may be in a form where a plurality of catalyst layers are stacked. Each catalyst layer is provided with a catalyst material. As the catalyst, various catalysts such as FCC, spent FCC, HZSM-5, ZSM-5, Cu-Al2O3, Co-Mo / z, Zeolite-β, natural zeolite (NZ), red mud, Al(OH)3Ca(OH)2, and FeO3 can be used. In this embodiment, a zeolite-based commercial catalyst such as ZSM-5 is used, but it is not limited thereto. By using a multi-layered catalyst tower, the residence time of the pyrolysis gas can be ensured.

[0089] The pyrolysis gas flows into the lower part of the catalyst tower 1410 and is reformed while flowing upward. Many small holes are formed in the zeolite, and the oil vapor contained in the pyrolysis gas has its hydrocarbon chain broken while passing through the zeolite. The high-molecular hydrocarbon is converted into a low-molecular hydrocarbon by the zeolite catalyst.

[0090] The heat exchanger 1420 cools the pyrolysis gas that has passed through the catalyst tower 1410 to turn the oil vapor into oil. Water may be used as the heat exchange medium. The heat exchanger 1420 can have a three-stage structure in a shell-and-tube form, but it is not limited thereto, and various forms of heat exchangers may be used.

[0091] The separation tank 1430 separates the condensed pyrolysis gas into gas and oil. The cooled pyrolysis gas moves to the separation tank 1430. The gaseous pyrolysis gas is discharged from the upper part of the separation tank 1430, and the oil condenses and is discharged from the lower part of the separation tank 1430. The condensed oil can be stored in the pyrolysis oil storage tank 1460. The oil stored in the pyrolysis oil storage tank 1460 can undergo post-treatment such as distillation.

[0092] The cleaning tank 1440 removes foreign matters in the pyrolysis gas in a gaseous state. The pyrolysis gas discharged from the upper part of the separation tank 1430 flows into the cleaning tank 1440. The cleaning tank 1440 neutralizes the pyrolysis gas to reduce the amount of hydrogen chloride (HCl) in the pyrolysis gas. An aqueous sodium hydroxide (NaOH) solution is contained in the cleaning tank 1440, and the pyrolysis gas has hydrogen chloride removed while passing through the aqueous sodium hydroxide solution. The neutralized pyrolysis gas flows into the pressure control tank 1450.

[0093] In this embodiment, one cleaning tank 1440 is provided, but in other embodiments, additional cleaning tanks may be further provided. If all the droplets of pyrolysis oil are not removed by the primary cleaning, additional cleaning tanks can be arranged. By using additional cleaning tanks to remove residual pyrolysis oil droplets, the purity of the pyrolysis gas can be further increased.

[0094] The pressure control tank 1450 is arranged to prevent the backflow of the pyrolysis gas before the pyrolysis gas is supplied to the burner 1310. An aqueous solution that does not react with the pyrolysis gas is contained in the pressure control tank 1450 at a predetermined height, and the pyrolysis gas flows into the aqueous solution. The pyrolysis gas is discharged from the discharge port at the upper end of the pressure control tank 1450. The pyrolysis gas discharged from the pressure control tank 1450 can be supplied to the burner 1310.

[0095] The reformed pyrolysis gas is used again as fuel for heating the reactor 1210. By using the pyrolysis gas as fuel again, the overall fuel consumption can be reduced, and the emission of pollutants can be reduced. According to the operation policy of the device, when the pyrolysis gas is not used, the cleaning tank 1440 and the pressure control tank 1450 are turned off, and the pyrolysis gas is discharged through the scrubber 1340 and the chimney 1350. Alternatively, the pyrolysis gas passing through the cleaning tank 1440 and the pressure control tank 1450 may be discharged through the chimney 1350.

[0096] As shown in FIG. 6, the separation unit 1500 can include a cleaning unit 1510, a separation unit 1520, a first chamber 1530, a second chamber 1540, carding modules 1531 and 1541, and pelleting modules 1532 and 1542. The cleaning unit 1510 is configured to clean the secondary pyrolysis product such that only the lumps of carbon fiber and glass fiber remain after the cleaning. First, the secondary pyrolysis product is screened to remove ash with a size of 20 mm or less. The filtered ash material is stored in an ash material storage chamber. The ash material can be in a state of very high temperature, and a cooling jacket can be disposed at the lower end of the ash material storage chamber. The cooling jacket can receive cold water from the cooling tower of the reforming unit 1400 and lower the temperature of the ash material contained in the ash material storage chamber.

[0097] The lumps of carbon fiber and glass fiber from which the ash material has been removed are cleaned. The cleaning can utilize a wet cleaning method.

[0098] The separation unit 1520 can separate the secondary pyrolysis product into a first substance and a second substance. The first substance can be r-CF (recycled carbon fiber), and the second substance can be r-GF (recycled glass fiber). r-CF and r-GF can be separated by utilizing the density difference. The methods for utilizing the density difference include a dry method and a wet method. The dry method utilizes the flow of air, causing the flow of air on the secondary pyrolysis product moving on the conveyor to move the light carbon fiber.

[0099] The wet method is a method of separating carbon fiber and glass fiber using a liquid having an intermediate density between the densities of carbon fiber and glass fiber.

[0100] The carbon fiber and glass fiber separated by the separation unit 1520 can move to the first chamber 1530 and the second chamber 1540, respectively. The separation operation of carbon fiber and glass fiber may be performed on a conveyor.

[0101] The carbon fibers and glass fibers stored in the first chamber 1530 and the second chamber 1540 respectively can be post-processed for shipment.

[0102] The carding modules 1531 and 1541 brush the r-CF and r-GF having a predetermined length. The length of the r-CF and r-GF from which the resin has been removed is 50 mm or less. Since the r-CF and r-GF have a short fiber length, they are brushed for post-processing. Due to the brushing operation, the fibers become oriented and longer. The brushed r-CF and r-GF are crimped and processed into a non-woven fabric. When the length of the r-CF and r-GF is 5 mm or less, brushing is not easy. The r-CF and r-GF with a length of 5 mm or less are not fed into the carding modules 1531 and 1541. Before the recovered r-CF and r-GF are fed into the carding modules 1531 and 1541, the r-CF and r-GF with a length of 5 mm or less can be separated using a mesh or the like.

[0103] The pelletizing modules 1532 and 1542 melt and mix the recovered r-CF and r-GF with the resin to make pellets. The pelletizing modules 1532 and 1542 cut the non-woven fabric produced by the carding modules 1531 and 1541 into a predetermined size and mix it with the melted resin. The r-CF and r-GF non-woven fabric whose structure has been hardened by crimping is cured together with the resin and shipped out.

[0104] On the other hand, the r-CF and r-GF with a length of 5 mm or less flow directly into the pelletizing modules 1532 and 1542 respectively without flowing into the carding modules 1531 and 1541. The r-CF and r-GF with a length of 5 mm or less are immediately mixed with the resin and pelletized.

[0105] The pelleting modules 1532 and 1542 can mix the non-woven r-CF, r-GF, r-CF, and r-GF short fibers with a length of 5 mm or less with a ready-made resin to produce pellet products according to the needs of the user. The control unit (not shown) receives the size of the waste composite material particles input from the waste composite material supply module 1100 into the pyrolysis reactor, and determines whether the carbon fiber and glass fiber stored in the first chamber 1530 and the second chamber 1540 respectively move to the pelleting modules 1532 and 1542 via the carding modules 1531 and 1541, or directly move to the pelleting modules 1532 and 1542.

[0106] As another embodiment, when the waste composite material is input into the pyrolysis reactor without being crushed, the carbon fiber and glass fiber may be controlled to move to the pelleting modules 1532 and 1542 via the carding modules 1531 and 1541. If the size of the waste composite material particles input into the pyrolysis reactor is small, the carbon fiber and glass fiber can directly move to the pelleting modules 1532 and 1542.

[0107] According to the needs of the user, the crushed size of the waste composite material may be adjusted in the crushing step. For example, when pelleting is required immediately without forming a non-woven fabric, the waste composite material can be crushed to 5 mm or less.

[0108] FIG. 7 is a flowchart showing a method for recovering carbon fiber and glass fiber according to an embodiment of the present invention, and FIG. 8 is a diagram showing the entire carbon fiber and glass fiber recovery device according to an embodiment of the present invention.

[0109] In order to separate the waste composite material according to the present invention, as shown in FIG. 7, the waste composite material is crushed and stored (S1100). The waste composite material cut to a length of 10 m or less is crushed so that the thickness becomes 20 mm or less. The waste composite material can be input into the crushing module 1110 and crushed.

[0110] On the one hand, the crushing module 1110 can adjust the crushing size of the waste composite material if necessary. The crushing size of the waste composite material can be adjusted according to the target state of the waste composite material and the final product. If long fibers can be recovered, the crushing size of the waste blades can be increased.

[0111] A large amount of dust is generated during the crushing process of the waste composite material. To prevent the dust from flowing out of the crushing module 1110, the input part of the crushing module 1110 can be sealed. Also, the dust generated during the crushing process of the waste composite material can be inhaled by the dust inhalation part and collected in a predetermined space. For dust collection, the air can be continuously circulated within the crushing module 1110.

[0112] After the waste composite material is crushed, the crushed waste composite material can be screened to remove particles smaller than a predetermined particle size. The crushed waste composite materials have different particle sizes. If the entire waste composite materials with different particle sizes are pyrolyzed in the pyrolysis reactor 1210, the small-sized blade fragments may carbonize and contaminate the primary pyrolysis product. Therefore, the crushed waste blades can be moved on the screen and separated under the screen if the size of the crushed particles is smaller than a predetermined size. Vibration can be applied to the screen to facilitate the separation of small particles.

[0113] The crushed waste composite material is conveyed to the storage module 1130. The storage module 1130 stores the waste composite material for a predetermined period before it is fed into the reactor. As shown in FIG. 8, hot air is supplied to the storage module 1130 from the heat exchanger 1320. The hot air is supplied to the storage module to dry the stored waste composite material so as to reduce the generation of water vapor during the pyrolysis process of the waste composite material.

[0114] Next, the waste composite material stored in the storage module 1130 is put into the pyrolysis reactor 1210 (S1200). The input of the waste composite material may be performed intermittently or continuously. A single-screw feeder can be used to input the crushed waste composite material. On the other hand, the stored waste composite material is in a high-temperature state due to hot air. As a result, since the temperature difference from the reaction unit is very large, it is necessary to lower the temperature of the waste composite material before inputting. Cooling jackets can be arranged on the bottom and side surfaces of the input module to cool the waste composite material to be input. The cooling jacket can receive cold water from the cooling tower of the reforming unit 1400 and lower the temperature of the ash material stored in the ash material storage chamber.

[0115] When the waste composite material is input, the input part of the pyrolysis reactor 1210 can have a double-valve structure so as to minimize the inflow of oxygen into the pyrolysis reactor 1210. The upper end of the input part is open, a first valve is provided on the upstream side of the passage, and a second valve is provided on the downstream side of the passage. The first valve is provided on the upstream side of the passage, and the second valve is provided on the downstream side of the passage.

[0116] The first valve and the second valve are not opened simultaneously and are controlled to be opened sequentially. The first valve and the second valve may be opened in a sliding manner, or the degree of opening can be adjusted according to the amount to be input. By opening each of the plurality of valves, as much crushed waste composite material as desired can be put into the pyrolysis reactor 1210.

[0117] The first valve may be opened while the second valve is closed. After the first valve is opened and a predetermined amount of crushed waste composite material is input, when the first valve is closed and the input part is sealed, the second valve is opened. Simultaneously with the opening of the second valve, flue gas can be injected through the gas inlet. While the second valve is open, supply flue gas into the passage of the input part, and when the second valve is closed again, discharge the flue gas through the gas outlet. The waste composite material is put into the pyrolysis reactor 1210 by the opening of the second valve.

[0118] The waste composite material is pyrolyzed thermally for the first time (S1300). Through the first thermal pyrolysis, resins such as epoxy and wood contained in the waste composite material are gasified.

[0119] The heat supply unit 1300 heats the first thermal pyrolysis reactor 1210 in an indirect heating form. The heat energy required for the first thermal pyrolysis reaction may be supplied by the first burner. The heat source of the first burner may be pyrolysis gas and LNG or LPG. The temperature inside the first thermal pyrolysis reactor 1210 may be 400 to 500 °C.

[0120] During the first thermal pyrolysis, the oxygen concentration inside the first thermal pyrolysis reactor 1210 can be maintained at 10% or less. The residence time of the crushed waste composite material in the first thermal pyrolysis reactor may be 9 hours or less.

[0121] The pyrolyzed crushed blade is pyrolyzed thermally for the second time (S1400). The carbon fiber and glass fiber mass containing char are pyrolyzed thermally in the second thermal pyrolysis reactor.

[0122] As a result of the first thermal pyrolysis, resins such as epoxy and wood contained in the waste composite material are gasified, but the resins that have not yet been gasified are carbonized (char) and remain on the surfaces of the carbon fiber and glass fiber. Through the second thermal pyrolysis, the resins and char remaining in the carbon fiber and glass fiber mass are decomposed.

[0123] The heat supply unit 1300 heats the second thermal pyrolysis reactor 1210' in an indirect heating form. The heat source for the second thermal pyrolysis may be combustion gas. The temperature of the combustion gas injected into the second thermal pyrolysis reactor 1210' may be 500 to 600 °C.

[0124] The residence time of the carbon fiber and glass fiber mass in the second thermal pyrolysis reactor 1210' may be 3 hours or less. The oxygen concentration in the second thermal pyrolysis reactor 1210' may be 10% or less.

[0125] The primary pyrolysis and the secondary pyrolysis may be carried out in one pyrolysis reactor or two or more pyrolysis reactors. The primary pyrolysis reactor and the secondary pyrolysis reactor may be reactors of the same form, or reactors of different forms may be used. For example, the primary pyrolysis reactor may be a rotary kiln, and the secondary pyrolysis reactor may be a screw type. The internal temperature of the primary and secondary pyrolysis reactors 1210, 1210' may be 400 to 500 °C.

[0126] In one embodiment, the primary pyrolysis and the secondary pyrolysis may be carried out in one pyrolysis reactor 1210. At this time, the pyrolysis reactor 1210 may be a batch pyrolysis reactor. A predetermined amount of waste composite material is charged into the pyrolysis reactor 1210, and the primary pyrolysis and the secondary pyrolysis are sequentially carried out in the pyrolysis reactor 1210. After the primary pyrolysis is carried out, impurities such as char are screened, and the secondary pyrolysis may be continuously carried out in the pyrolysis reactor 1210. The burner during the primary pyrolysis can receive pyrolysis gas and LNG / LPG from the fuel tank, and the burner during the secondary pyrolysis can receive combustion gas from the first pyrolysis reactor.

[0127] In another embodiment, two pyrolysis reactors 1210, 1210' are arranged in series so that the primary pyrolysis and the secondary pyrolysis can be carried out respectively. At this time, each of the pyrolysis reactors 1210, 1210' may be a batch pyrolysis reactor. The primary pyrolysis is carried out in the primary pyrolysis reactor 1210, and the secondary pyrolysis is carried out in the secondary pyrolysis reactor 1210'. A predetermined amount of waste composite material is charged into the primary pyrolysis reactor 1210, and the primary pyrolysis is carried out. When the primary pyrolysis is completed, the product of the primary pyrolysis is screened for impurities such as char and then transferred to the secondary pyrolysis reactor. The secondary pyrolysis is carried out in the secondary pyrolysis reactor 1210'. The burner during the primary pyrolysis can receive pyrolysis gas and LNG / LPG from the fuel tank, and the burner during the secondary pyrolysis can receive combustion gas from the primary pyrolysis reactor.

[0128] In other embodiments, two pyrolysis reactors 1210, 1210' are arranged in series to perform primary pyrolysis and secondary pyrolysis respectively, and each pyrolysis reactor 1210, 1210' may be a continuous pyrolysis reactor. A waste composite material is continuously fed into the primary pyrolysis reactor 1210 in predetermined amounts for primary pyrolysis. The primary pyrolysis product discharged from the primary pyrolysis reactor 1210 is transported to the primary pyrolysis reactor 1210', and after impurities such as char are screened out, it is continuously fed into the secondary pyrolysis reactor 1210'. Secondary pyrolysis is performed in the secondary pyrolysis reactor 1210' to decompose the resin and char remaining in the carbon fiber and glass fiber mass.

[0129] In other embodiments, two or more primary pyrolysis reactors 1210 may be connected and used in consideration of the residence time of the waste composite material in the reactor, the size of the waste composite material to be fed, etc. For example, the reaction unit 1200 may also include two primary pyrolysis reactors 1210, 1210 and one secondary pyrolysis reactor 1210' to ensure the residence time during primary pyrolysis.

[0130] Extract oil from the pyrolysis gas (S1500). The reforming unit 1400 can convert the pyrolysis gas into oil. A zeolite-based catalyst can be used for reforming the pyrolysis gas. The pyrolysis gas flows into the lower part of the catalyst tower 1410 and is reformed while flowing upward. Many small holes are formed in the zeolite, and the hydrocarbon chains of the oil vapor contained in the pyrolysis gas are broken while passing through the zeolite. The high-molecular hydrocarbons are converted into low-molecular hydrocarbons by the zeolite catalyst.

[0131] The heat exchanger 1420 cools the pyrolysis gas that has passed through the catalyst tower 1410 to turn the oil vapor into oil. Water can be used as the heat exchange medium.

[0132] The separation tank 1430 separates the condensed pyrolysis gas into gas and oil. The cooled pyrolysis gas moves to the separation tank 1430. The pyrolysis gas in gaseous state is discharged from the upper part of the separation tank 1430, and the oil condenses and is discharged from the lower part of the separation tank 1430. The condensed oil can be stored in the pyrolysis oil storage tank. The oil stored in the pyrolysis oil storage tank can undergo post-treatment such as distillation.

[0133] The reforming unit 1400 can convert approximately 30% of the total pyrolysis gas into pyrolysis oil. Thereby, the amount of fuel consumed for heating the pyrolysis reactor can be saved.

[0134] Separate carbon fiber and glass fiber from the secondary pyrolyzed waste composite material (S1600). The product of the second pyrolysis can be separated into r-CF (recycled carbon fiber) and r-GF (recycled glass fiber) by the separation unit 1500.

[0135] Specifically, screen the product of the secondary pyrolysis to remove ash with a size of 20 mm or less. The filtered ash material is stored in the ash material storage chamber. Wash the mass of carbon fiber and glass fiber from which the ash material has been removed. Wet washing methods can be used for washing. The washed r-CF and r-GF can be separated using the density difference.

[0136] The carbon fibers and glass fibers separated by the separation unit 1520 can be moved to the first chamber 1530 and the second chamber 1540, respectively. The carding modules 1531, 1541 brush the r-CF and r-GF having a predetermined length, respectively. The brushed r-CF and r-GF are crimped and processed into non-woven fabrics. The pelletizing modules 1532, 1542 melt and mix the recovered r-CF, r-GF and resin to make pellets. The pelletizing modules 1532, 1542 cut the non-woven fabrics produced by the carding modules 1531, 1541 into a predetermined size and mix them with the melted resin. The r-CF and r-GF non-woven fabrics whose texture has become hard by crimping can be cured together with the resin and shipped out.

[0137] The r-CF and r-GF with a length of 5 mm or less do not flow into the carding modules 1531, 1541 and immediately flow into the pelletizing modules 1532, 1542, respectively. The r-CF and r-GF with a length of 5 mm or less are immediately mixed with the resin and pelletized.

[0138] The control unit is transmitted the size of the waste composite material particles input from the waste composite material supply module 3100 to the pyrolysis reactor, and can determine whether the carbon fibers and glass fibers stored in the first chamber and the second chamber respectively move to the pelletizing module via the carding module or immediately move to the pelletizing module. According to the needs of the user, the crushing size of the waste composite material may be adjusted in the crushing step.

[0139] In the present invention, the waste composite material may be crushed, pyrolyzed, and separated into carbon fibers and glass fibers in one step, or moved to each unit by a conveyor. One or more conveyors can be coordinated to adjust the residence time in each unit.

[0140] As described above, an embodiment of the present invention has been explained. However, those with ordinary knowledge in the technical field can make various modifications and changes to the present invention by adding, changing, deleting, or adding components, etc., without departing from the idea of the present invention described in the claims, and this is also included within the scope of the rights of the present invention.

Explanation of Reference Numerals

[0141] 1000: Recovery device for carbon fiber and glass fiber 1100: Waste composite material supply unit, 1110: Crushing module 1120: Conveying module, 1130: Storage module 1140: Feeding module, 1200: Reaction unit 1210, 1210': Pyrolysis reactor, 1300: Heat supply unit 1310: Burner, 1320: Heat exchanger 1330: Blower, 1340: Scrubber 1350: Chimney, 1400: Reforming unit 1410: Catalytic tower, 1420: Heat exchanger 1430: Separation tank, 1440: Washing tank 1450: Pressure control tank, 1500: Separation unit 1510: Washing section, 1520: Separation section 1530: First chamber, 1540: Second chamber 1531, 1541: Carding module, 1532, 1542: Pelletizing module

Claims

1. A waste composite material supply unit including a crushing module for crushing a waste composite material and a storage module for storing the crushed waste composite material, a reaction unit for heating the waste composite material supplied from the waste composite material supply unit, a heat supply unit for providing heat to the reaction unit, a reforming unit for separating the pyrolysis gas discharged from the reaction unit into gas and oil, a separation unit for separating the resultant of the reaction unit into a first substance and a second substance, and a separation unit including a first chamber for accommodating the first substance and a second chamber for accommodating the second substance. A carbon fiber and glass fiber recovery device characterized by including.

2. The reaction unit includes one pyrolysis reactor, The pyrolysis reactor is a batch pyrolysis reactor, The carbon fiber and glass fiber recovery device according to claim 1, characterized in that primary pyrolysis and secondary pyrolysis are sequentially performed in the pyrolysis reactor.

3. The carbon fiber and glass fiber recovery device according to claim 1, characterized in that the reaction unit includes at least two pyrolysis reactors.

4. The carbon fiber and glass fiber recovery device according to claim 3, characterized in that a plurality of the pyrolysis reactors are batch pyrolysis reactors.

5. The carbon fiber and glass fiber recovery device according to claim 3, characterized in that a plurality of the pyrolysis reactors are continuous pyrolysis reactors.

6. The carbon fiber and glass fiber recovery device according to claim 1 or 2, characterized in that the reforming unit includes a catalyst tower, a heat exchanger, and a separation tank.

7. The separation unit, A first carding module for carding the first substance and a first pelletizing module for pelletizing the first substance, and The carbon fiber and glass fiber recovery device according to claim 1, further comprising a second carding module for carding the second substance and a second pelletizing module for pelletizing the second substance.

8. The separation unit, The carbon fiber and glass fiber recovery device according to claim 7, characterized in that the lengths of the first substance and the second substance are respectively detected, and when the lengths of the first substance and the second substance are 5 mm or less, they are respectively caused to flow into the first pelletizing module and the second pelletizing module.

9. A waste composite material supply step of supplying a waste composite material into a reactor, A first heating step of primarily heating the waste composite material, A second heating step of secondarily heating the waste composite material that has been primarily heated, An oil extraction step of extracting oil from the pyrolysis gas discharged from the first heating step, A separation step of separating the resultant of the second heating step into a first substance and a second substance, characterized in that it is a method for recovering carbon fiber and glass fiber.

10. The method for recovering carbon fiber and glass fiber according to Claim 9, characterized in that the first heating step and the second heating step are sequentially performed in one pyrolysis reactor.

11. The method for recovering carbon fiber and glass fiber according to Claim 9, characterized in that the first heating step is performed in a primary pyrolysis reactor and the second heating step is performed in a secondary pyrolysis reactor.

12. The method for recovering carbon fiber and glass fiber according to Claim 10 or 11, characterized in that the heat source in the first heating step is pyrolysis gas and LNG or LPG, and the heat source in the second heating step is combustion gas.

13. In the oil extraction step, The method for recovering carbon fiber and glass fiber according to Claim 9, characterized in that a zeolite-based catalyst is used for reforming the pyrolysis gas.

14. The method for recovering carbon fiber and glass fiber according to Claim 9, characterized in that in the separation step, the first and second substances are separated by a density difference.

15. The method for recovering carbon fiber and glass fiber according to Claim 9, characterized in that in the separation step, the first and second substances are each made into non-woven fabrics and then pelletized.

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