TWI804414B - Carbon Fiber Recovery Unit - Google Patents

Abstract

The carbon fiber recovery device of the present invention comprises a low-oxygen cracking device, which includes: a frame inclined at an angle relative to the horizontal plane and forming a higher part with a material inlet and an air outlet and a lower part with a material outlet and an air inlet The lower part; the continuous conveying unit is located at the higher part and is inclined at the aforementioned angle, and is connected to the feed inlet; and the processing unit is arranged at the lower part and is inclined with the aforementioned angle, and the processing unit includes a processing chamber and a microwave The end of the processing chamber facing the higher part is connected to the continuous conveying unit and the gas outlet, the end of the processing chamber facing the lower part is connected to the discharge port and the gas inlet, and the microwave supply part faces the processing chamber. The carbon fiber recycling device of the present invention also includes a normoxic cracking device, which also has the aforementioned structure.

Description

Carbon Fiber Recovery Unit

The invention relates to the technical field of a carbon fiber recovery device, especially a device for recovering carbon fiber from carbon fiber polymer composite materials in a microwave manner with an improved structural configuration.

Carbon Fiber Reinforced Polymer/Plastic (CFRP) is generally composed of resin and carbon fiber, which is widely used in industrial fields such as aerospace aircraft, golf clubs, tennis rackets, automobiles, wind power and medical equipment , this is because the carbon fiber polymer composite material has high strength, high elastic modulus, excellent heat resistance and corrosion resistance.

However, at present, there are problems in the treatment of scrapped carbon fiber polymer composite waste. For example, when the carbon fiber polymer composite waste is treated by burning, only the resin can be removed, and the carbon fiber remains as a residue. Therefore, Carbon fiber polymer composite waste is usually treated as non-combustible solid waste and disposed of through landfill, which not only wastes land resources, but also causes deterioration of the surrounding environment. Furthermore, carbon fiber polymer composite materials The waste contains high-value carbon fibers, and landfilling will undoubtedly cause a huge waste of carbon fiber resources.

Patent TW I663194 B proposes a device for recovering carbon fiber from carbon fiber polymer composite waste by using microwaves, in which the carbon fiber polymer composite waste is placed in a cavity, and microwaves are used to utilize changes in magnetic and electric fields The carbon fiber polymer composite waste in the pyrolysis chamber is heated to vaporize the resin and leave carbon fibers. However, in this method, carbon fiber polymer composite waste can only be treated in batches in a chamber with a limited capacity, which greatly increases the processing time and cost of carbon fiber polymer composite waste. Processing efficiency is also reduced accordingly.

Patent CN 105246605 B proposes an indirect heating method to heat and crack carbon fiber polymer composite waste in the cavity. It has a horizontally configured cavity, and the cavity is divided into different processing areas. Gases with different oxygen contents are used to treat The carbon fiber polymer composite waste continuously input into the cavity is heated and cracked. However, in this method, the pyrolysis heating method is a general heating rotary tube furnace, and the same cavity is divided into different processing areas, which makes it difficult to control the heating temperature and the oxygen content of the gas in different processing areas. Moreover, the cavity is arranged horizontally, so the transmission efficiency of carbon fiber polymer composite waste is not high and the exhaust gas emission effect is not good. Therefore, the processing time of carbon fiber polymer composite waste, The cost and the like are also greatly increased, and the processing efficiency is also reduced accordingly.

In order to solve the various problems existing in the above-mentioned conventional carbon fiber recovery device, the present invention proposes a carbon fiber recovery device with improved structural configuration, which has a continuous conveying unit and a processing unit arranged in an inclined manner, and cooperates with a discharge port, a feed port, The position of the air inlet and the air outlet is used to recycle carbon fiber by heating and cracking with microwaves, so as to save processing time, reduce processing cost and improve processing efficiency.

The carbon fiber recycling device proposed by the present invention includes a low-oxygen cracking device, and the low-oxygen cracking device includes a first frame, a first continuous conveying unit, and a first processing unit. Wherein, the first frame is inclined at a first angle relative to the horizontal plane and forms a first higher portion and a first lower portion, and the first higher portion has a first material inlet and a first outlet Air port, the first lower part has a first material outlet and a first air inlet; the first continuous conveying unit is arranged on the first higher part and inclined at the first angle, the first continuous conveying The unit is connected to the first material inlet; the first processing unit is arranged at the first lower part and inclined at the first angle, and the first processing unit includes a first processing chamber and at least one first A microwave supply member, one end of the first processing chamber facing the first higher part is connected to the first continuous conveying unit and the first gas outlet, one end of the first processing chamber facing the first lower part It is connected to the first material outlet and the first air inlet, and the at least one first microwave supply member is towards the first processing chamber.

As mentioned above, the first frame and the first continuous conveying unit disposed on it and the first processing unit are inclined, and the first continuous conveying unit can continuously supply materials (such as carbon fiber polymer composite materials) waste), using the inclined configuration, the waste can enter the first treatment unit by gravity, and use microwaves to heat and crack, thereby saving time for waste treatment, relatively reducing treatment costs and improving treatment efficiency.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned first angle is in the range of 4° to 10°.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned low-oxygen cracking device further includes a first conveyor belt, which is inclined relative to the horizontal plane and forms a first high conveying belt. end and a first low conveying end, and the first high conveying end is communicated with the first material inlet.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned low-oxygen cracking device further includes a crusher, and the crusher is connected to the first low delivery end.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned first continuous conveying unit is a conveying screw.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned first processing chamber includes a first outer barrel, a first inner barrel and a first motor, and the first outer barrel is fixed , the first inner barrel is arranged in the first outer barrel, the first motor is connected to the first inner barrel and drives the first inner barrel to rotate in the first outer barrel.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned first inner barrel protrudes inwards with a plurality of first stirring pieces.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned low-oxygen cracking device further includes a first high-temperature incineration chamber, a nitrogen source and a first catalytic converter, the first The high temperature incineration chamber is connected between the first gas outlet and the first catalytic converter, and the nitrogen gas source is connected to the first gas inlet.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned first high-temperature incineration chamber is connected to the first catalytic converter through a first connecting pipeline, and the nitrogen source is connected to a The gas pipeline communicates with the first gas inlet, and a part of the gas delivery pipeline is wound around a part of the first connecting pipeline.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned nitrogen gas source supplies nitrogen gas at a pressure of 7 atm, a mass of 12.5 g/min, a volume of 10 L/min and a temperature of room temperature.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned carbon fiber recycling device further includes a normoxic cracking device, and the normoxic cracking device includes a second frame, a second continuous The conveying unit and a second processing unit. Wherein, the second frame is inclined at a second angle relative to the horizontal plane and forms a second higher portion and a second lower portion, and the second higher portion has a second material inlet and a second outlet Air port, the second lower part has a second material outlet and a second air inlet, the second material inlet is connected to the first material outlet; the second continuous conveying unit is located at the second The higher part is inclined at the second angle, the second continuous conveying unit is connected to the second material inlet; the second processing unit is arranged at the second lower part and inclined at the second angle, the The second processing unit includes a second processing chamber and at least one second microwave supply member, and one end of the second processing chamber toward the second higher part is communicated with the second continuous conveying unit and the second gas outlet One end of the second processing chamber facing the second lower part is communicated with the second discharge port and the second gas inlet, and the at least one second microwave supply member is facing the second processing chamber.

Through the two-stage treatment of the cracking device with low oxygen content and the cracking device with normal oxygen content, it is easy to control the heating temperature and the oxygen content of the gas used for the heating cracking reaction.

Optionally, in a non-limiting exemplary embodiment, the aforementioned second angle is in the range of 4° to 10°.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned normoxic cracking device further includes a second conveyor belt, the second conveyor belt is inclined relative to the horizontal plane and forms a second high conveying belt end and a second lower delivery end, the second higher delivery end is communicated with the second material inlet, and the second lower delivery end is communicated with the first material outlet.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned second continuous conveying unit is a conveying screw.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned second processing chamber includes a second outer barrel, a second inner barrel and a second motor, and the second outer barrel is fixed , the second inner barrel is arranged in the second outer barrel, the second motor is connected to the second inner barrel and drives the second inner barrel to rotate in the second outer barrel.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned second inner barrel protrudes inwards with a plurality of second stirring pieces.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned normoxic cracking device further includes a second high-temperature incineration chamber and a second catalytic converter, and the second high-temperature incineration chamber It is connected between the second air outlet and the second catalytic converter.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned second high-temperature incineration chamber is communicated with the second catalytic converter through a second connecting pipeline.

The present invention also provides a carbon fiber recycling device, which includes a normoxic cracking device, and the normoxic cracking device includes a second frame, a second continuous conveying unit, and a second processing unit. Wherein, the second frame is inclined at a second angle relative to the horizontal plane and forms a second higher portion and a second lower portion, and the second higher portion has a second material inlet and a second outlet Air port, the second lower part has a second material outlet and a second air inlet; the second continuous conveying unit is arranged on the second higher part and inclined at the second angle, the second continuous conveying unit The unit is communicated with the second material inlet; the second processing unit is arranged at the second lower part and inclined at the second angle, and the second processing unit includes a second processing chamber and at least one second A microwave supply member, one end of the second processing chamber facing the second higher part is communicated with the second continuous conveying unit and the second gas outlet, and one end of the second processing chamber facing the second lower part The at least one second microwave supply member is connected to the second material outlet and the second gas inlet, and is directed toward the second processing chamber.

Optionally, in a non-limiting exemplary embodiment, the aforementioned second angle is in the range of 4° to 10°.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned normoxic cracking device further includes a second conveyor belt, the second conveyor belt is inclined relative to the horizontal plane and forms a second high conveying belt end and a second lower delivery end, the second higher delivery end is connected to the second material inlet.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned second continuous conveying unit is a conveying screw.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned second processing chamber includes a second outer barrel, a second inner barrel and a second motor, and the second outer barrel is fixed , the second inner barrel is arranged in the second outer barrel, the second motor is connected to the second inner barrel and drives the second inner barrel to rotate in the second outer barrel.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned second inner barrel protrudes inwards with a plurality of second stirring pieces.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned normoxic cracking device further includes a second high-temperature incineration chamber and a second catalytic converter, and the second high-temperature incineration chamber It is connected between the second air outlet and the second catalytic converter.

Optionally, in a non-limiting exemplary embodiment, the above-mentioned second high-temperature incineration chamber is communicated with the second catalytic converter through a second connecting pipeline.

The technical content of the present invention, its advantages and the effects it can achieve are further described in the form of preferred specific embodiments in conjunction with the accompanying drawings, but its purpose is only for illustration to facilitate a better understanding, not to Used for restrictions.

It should also be noted that the terms "first" and "second" used throughout this article before the component names are only for the purpose of more convenient explanation and distinction, and they do not represent any sequence restrictions, nor do they represent the attached Any contextual constraints on the described component names.

Please refer to Fig. 1, which is a structural diagram of the first preferred embodiment of the present invention. A carbon fiber recycling device 1 is shown in the first figure, and the carbon fiber recycling device 1 includes a low-oxygen cracking device 2, and the low-oxygen cracking device 2 includes a first frame 20, a first continuous conveying unit 21 and a first processing unit 22 .

As shown in Figure 1, the first frame 20 is inclined at a first angle A1 relative to the horizontal plane and forms a first higher portion 201 and a first lower portion 202, wherein the first higher portion 201 has a The first material inlet 203 and a first gas outlet 204 , the first lower part 202 has a first material outlet 205 and a first gas inlet 206 . In this embodiment, the first angle A1 of the aforementioned first frame 20 tilted relative to the horizontal plane is in the range of 4° to 10°, such as 4°, 4.5°, 5°, 5.5°, 6°, 6.5° , 7˚, 7.5˚, 8˚, 8.5˚, 9˚, 9.5˚, 10˚, etc.

As shown in Fig. 1 again, the first continuous conveying unit 21 is arranged on the first higher part 201 of the first frame 20 and is inclined with the aforementioned first angle A1, in other words, the first continuous conveying unit 21 conforms to the The first frame 20 is inclined at a first angle A1. In addition, the first continuous conveying unit 21 is connected to the first material inlet 203 located at the first higher portion 201 . In this embodiment, the aforementioned first continuous conveying unit 21 is a conveying screw, of course, it can also be a conveying belt or the like.

Also in Figure 1, the first processing unit 22 is arranged on the first lower portion 202 of the first frame 20 and is inclined at the aforementioned first angle A1. In other words, the first processing unit 22 also conforms to the first machine The first angle A1 of the frame 20 is inclined. In addition, the first processing unit 22 includes a first processing chamber 221 and a plurality of first microwave supply members 222, wherein the end of the first processing chamber 221 towards the first higher portion 201 is connected to the first continuous conveying unit 21 and the first gas outlet 204, one end of the first processing chamber 221 toward the first lower part 202 is connected to the first material outlet 205 and the first gas inlet 206, and a plurality of first microwave supply parts 222 are respectively Towards the first processing chamber 221 . In this embodiment, the aforementioned first microwave supply part 222 is used to supply microwaves to the first processing chamber 221, and the number of the first microwave supply part 222 may vary according to actual needs, for example, the number of the first microwave supply part 222 The number can be designed as one, two, three, four, five etc. depending on the size of the first processing chamber 221 .

When in use, carbon fiber polymer composite waste (not shown in the figure, hereinafter referred to as waste) is continuously entered into the first continuous conveying unit 21 from the first material inlet 203, and the first continuous conveying unit 21 can continuously convey the waste To the first processing chamber 221 of the first processing unit 22, at the same time by the inclined design of the first angle A1, the waste material can enter the first processing chamber 221 more quickly by using gravity, that is, the feeding speed of the waste material can be accelerated, In the first processing chamber 221 , the processing time of microwave heating cracking (as described below) by the first microwave supply member 222 can be greatly saved, thereby reducing processing cost and improving processing efficiency.

In this embodiment, the cracking device 2 with low oxygen content further includes a first conveyor belt 23 and a crusher 24, wherein the first conveyor belt 23 is inclined relative to the horizontal plane and forms a first high conveying end 231 and a The first low conveying end 232 and the first high conveying end 231 are connected to the first material inlet 203 , and the crusher 24 is connected to the first low conveying end 232 . Thereby, the waste material can be conveyed continuously by the first conveyor belt 23 and enter the first continuous conveying unit 21 through the first material inlet 203, and when the waste material is a relatively large object, such as an aircraft shell, an automobile bumper, etc., it can be It is first crushed by the crusher 24 and then transported by the first conveyor belt 23 .

After the waste material enters the first processing chamber 221 of the first processing unit 22, the first microwave supply part 222 supplies microwaves to the first processing chamber 221, and utilizes the change of the magnetic field and the electric field to control the waste in the first processing chamber 221. The waste material is cracked by microwave heating to vaporize the resin in the waste material and leave the carbon fiber in the waste material, which is finally collected and recycled by the first collection unit 28 .

Please refer to FIG. 3 first, which is a schematic structural diagram of the processing chamber of the carbon fiber recovery device of the present invention, and please refer to FIG. 1 at the same time. In this embodiment, the first processing chamber 221 includes a first outer barrel 223 (for example, used for heat insulation and microwave radiation prevention), a first inner barrel 224 (for example, quartz tube) and a first motor 225, wherein The first outer barrel 223 is fixed, the first inner barrel 224 is set in the first outer barrel 223, the first motor 225 is set in the first frame 20, and the first motor 225 is linked with the first chain 227, for example. The first inner barrel 224 drives the first inner barrel 224 to rotate in the first outer barrel 223 . In other words, after the waste material enters the first processing chamber 221, it can keep rolling, so that the waste material can be irradiated by the microwave energy of the first microwave supply member 222 at different angles, that is, comprehensively, so as to achieve the effect of thermal cracking more effectively (such as Make the resin vaporize more completely), reduce the reaction time of waste thermal cracking (short-time vaporization of resin).

In this embodiment, the first inner barrel 224 protrudes inwards with a plurality of first stirring pieces 226. In the third figure, there are four first stirring pieces 226, which are evenly arranged at 90 °. By the first The design of the stirring plate 226 can stir the waste materials, thereby achieving the purpose of making the waste materials more comprehensively irradiated by the microwaves of the first microwave supply member 222 . The number of the aforementioned first stirring blades 226 is not limited, such as one, two, three, five, six, etc., and can be arranged on the first inner barrel 224 at an average angle or an uneven angle.

Please refer to Fig. 1 again, in the present embodiment, low-oxygen cracking device 2 further comprises a first high-temperature incineration chamber 25, a nitrogen source 26 and a first catalytic converter 27, the first high-temperature incineration chamber The chamber 25 is connected between the first gas outlet 204 and the first catalytic converter 27 , and the nitrogen source 26 is connected to the first gas inlet 206 . In addition, the first high-temperature incineration chamber 25 is communicated with the first catalytic converter 27 through a first connecting pipeline 251, the nitrogen source 26 is communicated with the first gas inlet 206 through a gas delivery pipeline 261, and the gas delivery pipeline A part of 261 is wound around a part of the first connecting pipe 251 .

When the waste material is cracked by microwave heating with the first microwave supply part 222 in the first processing chamber 221, the cracking reaction can be carried out in nitrogen (low oxygen content). The mass of min, the volume of 10L/min and the temperature of room temperature supply nitrogen gas from the first gas inlet 206 to the first processing chamber 221 through the gas pipeline 261. On the contrary, that is, nitrogen will flow in the first processing chamber 221 in a gas countercurrent manner. When the waste is heated by microwaves and reacts in nitrogen for cracking, hot waste gas (such as heavy oil and harmful substances produced after the vaporization of resin is contained) will be produced. The hot exhaust gas), the hot exhaust gas flows through the first gas outlet 204 (due to the inclined design, the high-temperature gas flows upward to improve the exhaust gas emission effect) to the first high-temperature incineration chamber 25, and for example, at a temperature of 850 degrees to 1050 degrees Celsius High-temperature incineration treatment is carried out, and the treated hot exhaust gas flows through the first connecting pipeline 251 to the first catalytic converter 27 and then flows out after catalytic conversion treatment.

When the hot exhaust gas flows from the first high-temperature incineration chamber 25 to the first catalytic converter 27 through the first connecting pipeline 251, because a part of the gas delivery pipeline 261 is wound around a part of the first connecting pipeline 251, Therefore, the hot exhaust gas can preheat the liquid nitrogen in the aforementioned part of the gas pipeline 261 to heat the nitrogen gas so that the temperature in the first processing chamber 221 is more stable.

Please refer to Fig. 2, which is a structural diagram of a second preferred embodiment of the present invention. Shown in the 2nd figure is a carbon fiber recovery device 1 ', this carbon fiber recovery device 1 ' comprises a normal oxygen content cracking device 3, and this normal oxygen content cracking device 3 comprises a second frame 30, a second continuous The conveying unit 31 and a second processing unit 32 .

As shown in Figure 2, the second frame 30 is inclined at a second angle A2 relative to the horizontal plane and forms a second higher portion 301 and a second lower portion 302, wherein the second higher portion 301 has a The second material inlet 303 and a second air outlet 304, the second lower part 302 has a second material outlet 305 and a second air inlet 306; the second continuous delivery unit 31 is located on the second frame 30 The second higher part 301 is inclined at the aforementioned second angle A2, that is, the second continuous conveying unit 31 is inclined in accordance with the second angle A2 of the second frame 30, and the second continuous conveying unit 31 is connected to The second material inlet 303 of the second higher part 301; the second processing unit 32 is arranged on the second lower part 302 of the second frame 30 and is inclined with the aforementioned second angle A2, that is, the second processing unit 32 also complies with the second angle A2 inclination of the second frame 30, and the second processing unit 32 includes a second processing chamber 321 and a plurality of second microwave supply parts 322, and the second processing chamber 321 faces the second relatively One end of the high part 301 is connected to the second continuous conveying unit 31 and the second gas outlet 304, and the end of the second processing chamber 321 towards the second lower part 302 is connected to the second material outlet 305 and the second gas inlet 306 , the plurality of second microwave supply elements 322 are directed toward the second processing chamber 321 .

As shown in Fig. 2 again, the normoxic cracking device 3 further comprises a second conveyor belt 33, a second high temperature incineration chamber 35 and a second catalytic converter 37, wherein the second conveyor belt 33 is It is inclined relative to the horizontal plane and forms a second high conveying end 331 and a second low conveying end 332. The second high conveying end 331 is communicated with the second material inlet 303, and the second high temperature incineration chamber 35 is communicated with the second Between the gas outlet 304 and the second catalytic converter 37 , the second high-temperature incineration chamber 35 is connected to the second catalytic converter 37 through a second connecting pipeline 351 .

Please refer to Fig. 3 again, and please refer to Fig. 2 at the same time, as the above-mentioned first preferred specific embodiment, in this embodiment, the second processing chamber 321 includes a second outer barrel 323, a second The inner barrel 324 and a second motor 325, the second outer barrel 323 is fixed, the second inner barrel 324 is set in the second outer barrel 323 and the second inner barrel 324 protrudes inwards with a plurality of second stirring pieces 326 , the second motor 325 is arranged on the second frame 30 , and the second motor 325 is linked to the second inner barrel 324 by the second chain 327 and drives the second inner barrel 324 to rotate in the second outer barrel 323 .

Please refer to Fig. 2 again, changes such as mechanism design, quantity or angle of each assembly described in this second preferred embodiment are the same as those described in the above-mentioned first preferred embodiment. In addition, the microwave heating and cracking method of waste in this second preferred embodiment is also the same as that described in the first preferred embodiment above. Collect and recycle.

The difference between this second preferred embodiment and the above-mentioned first preferred embodiment is that the above-mentioned first preferred embodiment introduces nitrogen (low oxygen content, such as within 10% oxygen content, that is, the oxygen content is not Greater than 10%) is used as the microwave heating cracking reaction, and this second preferred embodiment is to introduce general air (normal oxygen content, such as oxygen content is greater than 10% by the second air inlet 306, and can be heated or without heating) as a microwave heating cracking reaction.

Please refer to FIG. 4, which is a structural diagram of a third preferred embodiment of the present invention. A carbon fiber recycling device 1'' is shown in Fig. 3, and this carbon fiber recycling device 1'' includes the low-oxygen cracking device 2 in Fig. 1 and the normal oxygen cracking device 3 in Fig. 2, and the structural configuration is As described in the first preferred embodiment in the first figure and the second preferred embodiment in the second figure.

As shown in Figure 4, in the carbon fiber recovery device 1'', the low-oxygen cracking device 2 can form the first stage of microwave heating cracking of waste, while the normal oxygen cracking device 3 can form a The second-stage microwave heating and cracking of the waste treated by the low-oxygen cracking device 2 (for example, to remove the remaining carbon slag). In other words, in the low-oxygen cracking device 2 of the first stage, the resin in the waste material can be cracked by microwave heating in a low-oxygen environment supplied with nitrogen to make it vaporized, and then the waste material enters the normal content of the second stage. In the oxygen cracking device 3, the environment with more oxygen is used to separate the residual waste slag from the surface of the carbon fiber, so as to achieve the purpose of completely cracking the waste to recover the carbon fiber. In addition, the waste after the above two-stage treatment has no peculiar smell and no harmful substances pollute the environment. In addition, the recovered carbon fibers after the above-mentioned two-stage treatment can be reused, such as being made into carbon fiber boards, which can increase the reuse value.

Furthermore, the waste is subjected to microwave heating and cracking through two stages (low oxygen content cracking device 2, normal oxygen content cracking device 3), so the first processing chamber 221 and the second processing chamber 221 of the first processing unit 22 respectively The heating temperature and oxygen content of the gas in the second processing chamber 321 of the unit 32 can be easily controlled.

Also as shown in Figure 4, in order to make waste conveniently transported to the normal oxygen content cracking device 3 by the low oxygen content cracking device 2, the second high delivery end 331 of the second conveyor belt 33 of the normal oxygen content cracking device 3 It is connected to the second material inlet 303 , and the second lower delivery end 332 of the second conveyor belt 33 is connected to the first material outlet 205 .

The above descriptions are only preferred specific embodiments of the present invention, and they are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

1: Carbon fiber recovery device 1’: Carbon fiber recovery unit 1'': carbon fiber recycling device 2: Low oxygen cracking device 20: First Rack 201: First Higher Section 202: First lower section 203: The first feed port 204: The first air outlet 205: The first outlet 206: The first air inlet 21: The first continuous conveying unit 22: The first processing unit 221: the first processing chamber 222: the first microwave supply part 223: The first outer barrel 224: The first inner barrel 225: The first motor 226: The first stirring piece 227: The first chain 23: The first conveyor belt 231: The first high conveying end 232: the first low conveying end 24: Crusher 25: The first high temperature incineration chamber 251: The first connecting pipeline 26: Nitrogen source 261: Gas pipeline 27: The first catalytic converter 28: The first collection unit 3: Normoxic cracking unit 30: second rack 301: Second Higher Section 302: second lower part 303: The second inlet 304: Second air outlet 305: The second outlet 306: Second air inlet 31: The second continuous conveying unit 32: Second processing unit 321: second processing chamber 322: the second microwave supply part 323: the second outer barrel 324: the second inner barrel 325: second motor 326: the second stirring piece 327: second chain 33: Second conveyor belt 331: The second highest conveying end 332: The second lowest conveying end 35: Second high temperature incineration chamber 351: the second connecting pipeline 37:Second catalytic converter 38: The second collection unit A1: first angle A2: Second angle

Figure 1 is a structural diagram of the first preferred embodiment of the present invention.

Fig. 2 is a structural diagram of a second preferred embodiment of the present invention.

Fig. 3 is a schematic structural view of the processing chamber of the carbon fiber recovery device of the present invention.

Fig. 4 is a structural diagram of a third preferred embodiment of the present invention.

1”: carbon fiber recycling unit

2: Low oxygen cracking device

20: First Rack

201: First Higher Section

202: First lower section

204: The first air outlet

205: The first outlet

206: The first air inlet

21: The first continuous conveying unit

22: The first processing unit

221: the first processing chamber

222: the first microwave supply part

225: The first motor

23: The first conveyor belt

231: The first high conveying end

232: the first low conveying end

24: Crusher

25: The first high temperature incineration chamber

251: The first connecting pipeline

26: Nitrogen source

27: The first catalytic converter

3: Normoxic cracking unit

30: second rack

301: Second Higher Section

302: second lower part

303: The second inlet

304: Second air outlet

305: The second outlet

306: Second air inlet

31: The second continuous conveying unit

32: Second processing unit

325: second motor

321: second processing chamber

322: the second microwave supply part

33: Second conveyor belt

331: The second highest conveying end

332: The second lowest conveying end

35: Second high temperature incineration chamber

351: the second connecting pipeline

37:Second catalytic converter

38: The second collection unit

A1: first angle

A2: Second angle

Claims (25)

A carbon fiber recovery unit comprising a low-oxygen cracking unit (2), the low-oxygen cracking unit (2) comprising: A first frame (20) inclined at a first angle (A1) relative to the horizontal plane and forming a first higher portion (201) and a first lower portion (202), the first higher portion ( 201) has a first material inlet (203) and a first gas outlet (204), and the first lower part (202) has a first material outlet (205) and a first gas inlet (206) ; A first continuous conveying unit (21) is arranged on the first higher part (201) and inclined at the first angle (A1), and the first continuous conveying unit (21) is connected to the first feeding material mouth (203); and a first processing unit (22), arranged on the first lower portion (202) and inclined at the first angle (A1), the first processing unit (22) comprising a first processing chamber (221) and at least one first microwave supply member (222), the end of the first processing chamber (221) towards the first higher part (201) is connected to the first continuous conveying unit (21) and the first outlet Gas port (204), one end of the first processing chamber (221) towards the first lower part (202) is connected to the first material outlet (205) and the first gas inlet (206), the at least A first microwave supply (222) is directed toward the first processing chamber (221). The carbon fiber recovery device as described in claim 1, wherein the first angle (A1) is in the range of 4° to 10°. The carbon fiber recovery device as described in Claim 1, wherein the low-oxygen cracking device (2) further includes a first conveyor belt (23), and the first conveyor belt (23) is inclined relative to the horizontal plane and forms a first A high conveying end (231) and a first low conveying end (232), the first high conveying end (231) is communicated with the first material inlet (203). The carbon fiber recycling device as described in claim 3, wherein the low-oxygen cracking device (2) further includes a crusher (24), and the crusher (24) is connected to the first low delivery end (232). The carbon fiber recovery device according to claim 1, wherein the first continuous conveying unit (21) is a conveying screw. The carbon fiber recovery device as described in claim 1, wherein the first processing chamber (221) includes a first outer barrel (223), a first inner barrel (224) and a first motor (225), the first An outer barrel (223) is fixed, the first inner barrel (224) is set in the first outer barrel (223), the first motor (225) is connected to the first inner barrel (224) and Drive the first inner barrel (224) to rotate in the first outer barrel (223). The carbon fiber recovery device according to claim 6, wherein a plurality of first stirring blades (226) protrude inward from the first inner barrel (224). The carbon fiber recycling device as described in Claim 1, wherein the low-oxygen cracking device (2) further comprises a first high-temperature incineration chamber (25), a nitrogen source (26) and a first catalytic converter ( 27), the first high temperature incineration chamber (25) is communicated between the first gas outlet (204) and the first catalytic converter (27), the nitrogen source (26) is communicated with the first Air inlet (206). The carbon fiber recovery device as described in Claim 8, wherein the first high-temperature incineration chamber (25) is communicated with the first catalytic converter (27) through a first connecting pipeline (251), and the nitrogen source ( 26) A gas delivery pipeline (261) is connected to the first gas inlet (206), and a part of the gas delivery pipeline (261) is wound around a part of the first connecting pipeline (251). The carbon fiber recycling device as described in any one of claims 1 to 9, further comprising a normoxic cracking device (3), the normoxic cracking device (3) comprising: A second frame (30) inclined at a second angle (A2) relative to the horizontal plane and forming a second higher portion (301) and a second lower portion (302), the second higher portion ( 301) has a second material inlet (303) and a second gas outlet (304), and the second lower part (302) has a second material outlet (305) and a second gas inlet (306) , the second material inlet (303) is connected to the first material outlet (205); A second continuous conveying unit (31) is arranged on the second higher part (301) and inclined at the second angle (A2), the second continuous conveying unit (31) is connected to the second feeding mouth (303); and A second processing unit (32) is arranged on the second lower portion (302) and inclined at the second angle (A2), the second processing unit (32) includes a second processing chamber (321) and at least one second microwave supply member (322), the end of the second processing chamber (321) towards the second higher part (301) is connected to the second continuous conveying unit (31) and the second outlet Gas port (304), one end of the second processing chamber (321) towards the second lower part (302) is connected to the second material outlet (305) and the second gas inlet (306), the at least A second microwave supply (322) is directed toward the second processing chamber (321). The carbon fiber recycling device as described in claim 10, wherein the second angle (A2) is in the range of 4° to 10°. The carbon fiber recovery device as described in claim 10, wherein the normoxic cracking device (3) further includes a second conveyor belt (33), and the second conveyor belt (33) is inclined relative to the horizontal plane and forms a first Two high conveying ends (331) and a second low conveying end (332), this second high conveying end (331) is communicated with this second feeding port (303), and this second low conveying end (332) is communicated with the first outlet (205). The carbon fiber recovery device according to claim 10, wherein the second continuous conveying unit (31) is a conveying screw. The carbon fiber recovery device as described in claim 10, wherein the second processing chamber (321) includes a second outer barrel (323), a second inner barrel (324) and a second motor (325), the second Two outer barrels (323) are fixed, the second inner barrel (324) is set in the second outer barrel (323), the second motor (325) is connected to the second inner barrel (324) and Drive the second inner barrel (324) to rotate in the second outer barrel (323). The carbon fiber recovery device according to claim 14, wherein a plurality of second stirring blades (326) protrude inward from the second inner barrel (324). The carbon fiber recovery device as described in claim 10, wherein the normoxic cracking device (3) further includes a second high-temperature incineration chamber (35) and a second catalytic converter (37), the second high-temperature The incineration chamber (35) is connected between the second gas outlet (304) and the second catalytic converter (37). The carbon fiber recovery device according to claim 16, wherein the second high-temperature incineration chamber (35) is connected to the second catalytic converter (37) through a second connecting pipeline (351). A carbon fiber recovery unit comprising a normoxic cracking unit (3), the normoxic cracking unit (3) comprising: A second frame (30) inclined at a second angle (A2) relative to the horizontal plane and forming a second higher portion (301) and a second lower portion (302), the second higher portion ( 301) has a second material inlet (303) and a second gas outlet (304), and the second lower part (302) has a second material outlet (305) and a second gas inlet (306) ; A second continuous conveying unit (31) is arranged on the second higher part (301) and inclined at the second angle (A2), and the second continuous conveying unit (31) is connected to the second feeding material mouth (303); and A second processing unit (32) is arranged on the second lower portion (302) and inclined at the second angle (A2), the second processing unit (32) includes a second processing chamber (321) and at least one second microwave supply member (322), the end of the second processing chamber (321) towards the second higher part (301) is connected to the second continuous conveying unit (31) and the second outlet Gas port (304), one end of the second processing chamber (321) towards the second lower part (302) is connected to the second material outlet (305) and the second gas inlet (306), the at least A second microwave supply (322) is directed toward the second processing chamber (321). The carbon fiber recycling device as described in claim 18, wherein the second angle (A2) is in the range of 4° to 10°. The carbon fiber recovery device as described in claim 18, wherein the normoxic cracking device (3) further includes a second conveyor belt (33), and the second conveyor belt (33) is inclined relative to the horizontal plane and forms a first Two high conveying ends (331) and a second low conveying end (332), the second high conveying end (331) is connected to the second material inlet (303). The carbon fiber recovery device according to claim 18, wherein the second continuous conveying unit (31) is a conveying screw. The carbon fiber recovery device as described in claim 18, wherein the second processing chamber (321) includes a second outer barrel (323), a second inner barrel (324) and a second motor (325), the second Two outer barrels (323) are fixed, the second inner barrel (324) is set in the second outer barrel (323), the second motor (325) is connected to the second inner barrel (324) and Drive the second inner barrel (324) to rotate in the second outer barrel (323). The carbon fiber recovery device according to claim 22, wherein a plurality of second stirring blades (326) protrude inward from the second inner barrel (324). The carbon fiber recovery device as described in claim 18, wherein the normoxic cracking device (3) further includes a second high-temperature incineration chamber (35) and a second catalytic converter (37), the second high-temperature The incineration chamber (35) is connected between the second gas outlet (304) and the second catalytic converter (37). The carbon fiber recovery device according to claim 24, wherein the second high-temperature incineration chamber (35) is connected to the second catalytic converter (37) through a second connecting pipeline (351).

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