CN219785989U - Efficient pyrolysis recovery system for wind power blades - Google Patents
Efficient pyrolysis recovery system for wind power blades Download PDFInfo
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- CN219785989U CN219785989U CN202321347231.0U CN202321347231U CN219785989U CN 219785989 U CN219785989 U CN 219785989U CN 202321347231 U CN202321347231 U CN 202321347231U CN 219785989 U CN219785989 U CN 219785989U
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 110
- 238000011084 recovery Methods 0.000 title claims abstract description 34
- 239000002245 particle Substances 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 37
- 239000007789 gas Substances 0.000 claims abstract description 36
- 238000002791 soaking Methods 0.000 claims abstract description 31
- 239000000835 fiber Substances 0.000 claims abstract description 20
- 238000001035 drying Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003546 flue gas Substances 0.000 claims abstract description 11
- 239000007787 solid Substances 0.000 claims abstract description 8
- 238000012216 screening Methods 0.000 claims description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 239000000428 dust Substances 0.000 claims description 20
- 238000002485 combustion reaction Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- 239000002918 waste heat Substances 0.000 claims description 7
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
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- 239000002912 waste gas Substances 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model relates to a high-efficiency pyrolysis recovery system for wind power blades. Comprising the following steps: the pretreatment system is used for cutting the wind power blade into blade blocks; the soaking and drying system comprises a soaking tank and a dryer, wherein the soaking tank is used for soaking the blade blocks, and the dryer is used for drying the soaked blade blocks; a first crushing system comprising a first crushing device for crushing the dried blade pieces into blade particles; the pyrolysis system comprises a pyrolysis furnace and a heating furnace, wherein a first inlet of the pyrolysis furnace is communicated with an outlet of the first crushing device, a second inlet of the pyrolysis furnace is communicated with an outlet of the heating furnace, a solid outlet of the pyrolysis furnace is communicated with the second crushing system, and a gas outlet of the pyrolysis furnace is communicated with the outside; the heating furnace is used for providing high-temperature flue gas for the pyrolysis furnace, and the pyrolysis furnace is used for pyrolyzing the blade particles to obtain a material containing fiber yarns; the second crushing system comprises a second crushing device, and a solid outlet of the pyrolysis furnace is communicated with an inlet of the second crushing device. The utility model has high pyrolysis efficiency and lower energy consumption.
Description
Technical Field
The utility model relates to the technical field of solid waste treatment, in particular to a high-efficiency pyrolysis recovery system of wind power blades.
Background
The wind power blade is one of core components of the wind power generator and mainly comprises glass fiber, carbon fiber, bassal wood, PVC and other materials, wherein the materials are high-added-value materials. Therefore, when the wind turbine reaches the service life, the wind turbine blade needs to be recovered so as to avoid energy waste.
In order to recycle the wind power blades, the related art adopts a pyrolysis mode to recycle the wind power blades, but the pyrolysis efficiency is low and the energy consumption is high.
Disclosure of Invention
Based on the technical problems of low pyrolysis efficiency and high energy consumption of the existing recovery system, the embodiment of the utility model provides a high-efficiency pyrolysis recovery system for wind power blades.
The embodiment of the utility model provides a high-efficiency pyrolysis recovery system for wind power blades, which comprises the following components:
the pretreatment system is used for cutting the wind power blade to be treated into blade blocks with the size smaller than the first size;
the soaking and drying system comprises a soaking tank and a dryer, wherein the soaking tank is used for soaking the blade blocks, and the dryer is used for drying the soaked blade blocks;
a first crushing system comprising a first crushing device for crushing dried blade pieces into blade particles comprising resin and filaments;
the pyrolysis system comprises a pyrolysis furnace and a heating furnace, wherein a first inlet of the pyrolysis furnace is communicated with an outlet of the first crushing device, a second inlet of the pyrolysis furnace is communicated with an outlet of the heating furnace, a solid outlet of the pyrolysis furnace is communicated with the second crushing system, and a gas outlet of the pyrolysis furnace is communicated with the outside; the heating furnace is used for providing high-temperature flue gas with preset temperature for the pyrolysis furnace, and the pyrolysis furnace is used for pyrolyzing the blade particles discharged by the first crushing device under preset conditions to obtain pyrolysis gas and materials containing fiber yarns;
the second crushing system comprises a second crushing device, a solid outlet of the pyrolysis furnace is communicated with an inlet of the second crushing device, and the second crushing device is used for crushing materials containing fiber yarns discharged from the pyrolysis furnace into material particles so as to obtain the fiber yarns.
In one possible design, the infusion drying system further comprises a conveyor for conveying the blade pieces discharged from the dryer to the first crushing device.
In one possible design, the first crushing system further comprises a first screening device, an inlet of the first screening device being in communication with an outlet of the first crushing device, the outlet of the first screening device being in communication with the inlet of the first crushing device and the first inlet of the pyrolysis furnace, respectively, the first screening device being adapted to return the vane particles of the vane particles having a size greater than the second size to the first crushing device and to transport the vane particles of a size smaller than the second size to the pyrolysis furnace.
In one possible design, the pyrolysis furnace further comprises a dust removal system and a secondary combustion system, wherein the gas outlet of the pyrolysis furnace is communicated with the inlet of the dust removal system, the outlet of the dust removal system and the gas outlet of the dryer are respectively communicated with the inlet of the secondary combustion system, and the secondary combustion system is used for combusting organic gases discharged from the dryer and the dust removal system.
In one possible design, the system further comprises a purification system comprising a waste heat recovery device, a scrubber, and an activated carbon canister; the waste heat recovery device comprises a cold source inlet, a cold source outlet, a heat source inlet and a heat source outlet, wherein the heat source inlet is communicated with the outlet of the secondary combustion system, the heat source outlet is communicated with the inlet of the washing tower, the cold source inlet is communicated with the gas outlet of the dryer, the cold source outlet is communicated with the gas inlet of the dryer, the outlet of the washing tower is communicated with the inlet of the activated carbon adsorption tank, and the outlet of the activated carbon adsorption tank is communicated with the outside.
In one possible design, the second crushing system further comprises a second screening device, the inlet of which communicates with the outlet of the second crushing device, the outlet of which communicates with the inlet of the first crushing device, the second screening device being adapted to return material particles of the material particles of a size larger than the second size to the first crushing device.
In one possible design, the first dimension is 1 meter.
In one possible design, the second dimension is 50 millimeters.
In one possible design, the first crushing device is a two-stage crusher.
In one possible design, the first screening device is a linear vibrating screen.
In one possible design, the second screening device comprises at least two layers of screens of different sizes for discharging the filaments of material particles discharged from the second crushing device to different collecting devices according to different size specifications.
In the embodiment of the utility model, the wind power blade is mainly processed by resin and reinforcing fibers, and in order to ensure the strength of the wind power blade, the materials are tightly bonded together, and the oxygen permeability in the pyrolysis process is lower and the pyrolysis efficiency is low because the materials are tightly bonded. Based on the method, the system firstly cuts the wind power blade into blade blocks, and then soaks the blade blocks by utilizing a soaking tank so as to reduce the interaction between the resin and the reinforced fiber and improve the permeability of oxygen in the pyrolysis process. And then drying the soaked blade blocks, and crushing the dried blade blocks into smaller blade particles so as to increase the heat exchange area during pyrolysis. Through soaking and crushing, the pyrolysis energy consumption can be effectively reduced, and the pyrolysis efficiency is improved. And finally, crushing the pyrolyzed material into material particles by using a second crushing device so as to separate the fiber from other substances, thereby obtaining pure fiber. The utility model has high pyrolysis efficiency and lower energy consumption.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a system schematic diagram of a high efficiency pyrolysis recovery system for wind blades provided in one embodiment of the present utility model;
FIG. 2 is a system schematic diagram of a high efficiency pyrolysis recovery system for wind blades according to another embodiment of the present utility model.
Reference numerals:
1-a pretreatment system;
2-soaking and drying system;
21-a soaking pool;
22-a dryer;
3-a first crushing system;
31-a first crushing device;
32-a first screening device;
4-a pyrolysis system;
41-a pyrolysis furnace;
42-heating furnace;
5-a second crushing system;
51-a second crushing device;
52-a second screening device;
6-a dust removal system;
7-a secondary combustion system;
8-a purification system;
81-waste heat recovery equipment;
82-a scrubber;
83-activated carbon adsorption tank.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.
As shown in fig. 1, an embodiment of the present utility model provides a high-efficiency pyrolysis recovery system for wind power blades, including:
the pretreatment system 1 is used for cutting the wind power blade to be treated into blade blocks with the size smaller than the first size;
a soaking and drying system 2, comprising a soaking tank 21 and a dryer 22, wherein the soaking tank 21 is used for soaking the blade blocks, and the dryer 22 is used for drying the soaked blade blocks;
a first crushing system 3 comprising a first crushing device 31, the first crushing device 31 being for crushing dried blade pieces into blade particles, the blade particles comprising resin and filaments;
the pyrolysis system 4 comprises a pyrolysis furnace 41 and a heating furnace 42, wherein a first inlet of the pyrolysis furnace 41 is communicated with an outlet of the first crushing device 31, a second inlet of the pyrolysis furnace 41 is communicated with an outlet of the heating furnace 42, a solid outlet of the pyrolysis furnace 41 is communicated with the second crushing system 5, and a gas outlet of the pyrolysis furnace 41 is communicated with the outside; the heating furnace 42 is configured to provide a high temperature flue gas with a preset temperature to the pyrolysis furnace 41, and the pyrolysis furnace 41 is configured to pyrolyze the blade particles discharged from the first crushing device 31 under a preset condition to obtain pyrolysis gas and a material containing fiber;
the second crushing system 5 comprises a second crushing device 51, the solid outlet of the pyrolysis furnace 41 being in communication with the inlet of the second crushing device 51, the second crushing device 51 being adapted to crush the material comprising filaments discharged from the pyrolysis furnace 41 into material particles to obtain filaments.
In the embodiment, the wind power blade is mainly formed by processing resin and reinforcing fibers, and in order to ensure the strength of the wind power blade, the materials are tightly bonded together, and the oxygen permeability in the pyrolysis process is low and the pyrolysis efficiency is low due to the tight bonding between the materials. Based on this, the system of the utility model firstly cuts the wind power blade into blade blocks, and then soaks the blade blocks by using the soaking tank 21 to reduce the interaction between the resin and the reinforcing fibers and improve the permeability of oxygen in the pyrolysis process. And then drying the soaked blade blocks, and crushing the dried blade blocks into smaller blade particles so as to increase the heat exchange area during pyrolysis. Through soaking and crushing, the pyrolysis energy consumption can be effectively reduced, and the pyrolysis efficiency is improved. Finally, the pyrolyzed material is broken into material particles by the second breaking device 51 to separate the fiber from other materials, thereby obtaining pure fiber. Therefore, the recovery system provided by the embodiment of the utility model has high pyrolysis efficiency and lower energy consumption.
In some embodiments, the soaking solution in the soaking tank 21 is composed of an organic solvent, preferably tetrahydrofuran, and a swelling agent, preferably polyethylene glycol, wherein the concentration of polyethylene glycol in tetrahydrofuran is 6wt%, and the soaking time is 12-24 hours. In addition, the soaked blade pieces can be conveyed into the dryer 22 by a belt conveyor for drying, and the drying temperature is preferably 60-120 ℃. In addition, the dryer 22 may be a link plate dryer 22, where the link plate dryer 22 has a draining function, that is, the vane block is drained first to recover the soaking solution as much as possible, so as to avoid waste of the soaking solution, and the remaining soaking solution is separated by heating and evaporating.
In some embodiments, the high temperature flue gas at the preset temperature is a high temperature flue gas of greater than 850 ℃, so that the generation of harmful gases can be avoided. The preset condition is that the pyrolysis temperature in the pyrolysis furnace 41 is controlled to be 300-400 ℃, the pyrolysis time is 60-90 min, and the oxygen content in the pyrolysis furnace 41 is less than 10%. Under the condition, the blade particles are pyrolyzed, so that pyrolysis oil is not generated, and hazardous waste is not generated. In addition, the strength of the fiber filaments recovered under the preset condition is more than 90 percent, and VOC in the waste gas<50mg/m 3 。
In some embodiments, the first size is determined based on the transportation convenience and the size of the crushing device, and the first size is preferably 1 meter, i.e. the wind power blade is cut into blade pieces smaller than 1 meter, so as to be suitable for most transportation modes and most crushing systems, and of course, the first size is not limited thereto. In addition, before cutting the wind power blade, the metal objects such as the metal lightning conductor, the blade tip aluminum alloy, the blade tail connecting bolt and the like on the blade are taken down and recycled so as to fully utilize energy.
The first crushing device 31 is preferably a two-stage crusher, but may be a single-shaft crusher or the like capable of crushing a large mass of material into a small particulate material, and the cut blade pieces may be transported to the first crushing device 31 by a belt conveyor. The pyrolysis furnace 41 is preferably a horizontal rotary kiln, but the above is merely a preferable embodiment, and the present utility model is not limited thereto.
The fuel introduced into the heating furnace 42 is preferably natural gas, but may be other gases, and the present utility model is not limited thereto.
As shown in fig. 2, in some embodiments, the first crushing system 3 further comprises a first screening device 32, wherein an inlet of the first screening device 32 is in communication with an outlet of the first crushing device 31, and an outlet of the first screening device 32 is in communication with the inlet of the first crushing device 31 and the first inlet of the pyrolysis furnace 41, respectively, and the first screening device 32 is configured to return the vane particles having a size larger than the second size of the vane particles to the first crushing device 31 and to deliver the vane particles having a size smaller than the second size to the pyrolysis furnace 41.
It will be appreciated that the smaller the particle size of the blade particles, the more thorough pyrolysis and therefore the smaller the blade particles obtained via the first crushing device 31. Typically, after primary crushing by the first crushing device 31, the majority of the blade particles are smaller in size than the second size. At this size, less power is expended and pyrolysis is favored. However, there are also small amounts of blade particles having a size greater than the second size, while large particles reduce the pyrolysis effect and reduce the recovery of the filaments. It is therefore necessary to provide a first screening device 32 which screens out particles of blades of a size greater than the second size and returns to the first crushing device 31 for re-crushing into particles of a size less than the second size, thereby improving the pyrolysis efficiency. In this embodiment, the second dimension is preferably 50mm, but may be other, and the present utility model is not limited thereto. Further, the blade particles crushed by the first crushing device 31 are transported to the first screening device 32 by a belt conveyor, and the first screening device 32 is preferably a rectilinear vibrating screen. In addition, the vane particles flowing out through the first screening device 32 are transported into the pyrolysis furnace 41 by a screw conveyor.
In some embodiments, the pyrolysis furnace further comprises a dust removal system 6 and a secondary combustion system 7, wherein the gas outlet of the pyrolysis furnace 41 is communicated with the inlet of the dust removal system 6, the outlet of the dust removal system 6 and the gas outlet of the dryer 22 are respectively communicated with the inlet of the secondary combustion system 7, and the secondary combustion system 7 is used for combusting the organic gas discharged from the dryer 22 and the dust removal system 6.
In this embodiment, the pyrolysis gas discharged through the pyrolysis furnace 41, the gas discharged from the first crushing system 3 and the second crushing system 5 contain harmful substances such as dust, and if discharged directly to the outside, the atmosphere is polluted, so that it is necessary to perform purification treatment using the dust removal system 6.
In some embodiments, the exhaust outlets of the first crushing system 3, the pyrolysis system 4, and the second crushing system 5 are each in communication with an inlet of a dust removal system 6, the dust removal system 6 being configured to clean the waste gases from the first crushing system 3, the pyrolysis system 4, and the second crushing system5 exhaust gas discharged. After being purified by the dust removal system 6, VOC in the waste gas<50mg/m 3 And no dioxin is generated, thereby meeting the environmental protection requirement.
Further, on the one hand, the exhaust gas discharged from the dust removal system 6 contains a pyrolysis gas which contains an organic gas; on the other hand, when the dryer 22 dries the wet blade, a part of the soaking liquid in the soaking tank 21 volatilizes, and a part of the organic matters in the resin also evaporates. The gases have higher combustion value, and if the gases are directly discharged, energy waste can be caused. This embodiment can thus burn the above-mentioned organic gas into high-temperature flue gas by providing the secondary combustion system 7.
Harmful substances such as dust are also present in the generated high-temperature flue gas, and therefore, in some embodiments, the purification system 8 is further included, and the purification system 8 includes a waste heat recovery device 81, a washing tower 82 and an activated carbon adsorption tank 83; the waste heat recovery device 81 comprises a cold source inlet, a cold source outlet, a heat source inlet and a heat source outlet, wherein the heat source inlet is communicated with the outlet of the secondary combustion system 7, the heat source outlet is communicated with the inlet of the washing tower 82, the cold source inlet is communicated with the gas outlet of the dryer 22, the cold source outlet is communicated with the gas inlet of the dryer 22, the outlet of the washing tower 82 is communicated with the inlet of the activated carbon adsorption tank 83, and the outlet of the activated carbon adsorption tank 83 is communicated with the outside.
In this embodiment, by providing the heat recovery device 81, the high-temperature flue gas is used as a heat source, the gas or liquid of the drying blade block is used as a cold source, the heat source and the cold source exchange heat in the heat recovery device 81, and the gas or liquid of the drying blade block is heated by the high-temperature flue gas, so that the heat of the high-temperature flue gas can be effectively recovered, and the waste of energy sources is avoided.
In some embodiments, the second crushing system 5 further comprises a second screening device 52, the inlet of the second screening device 52 being in communication with the outlet of the second crushing device 51, the outlet of the second screening device 52 being in communication with the inlet of the first crushing device 31, the second screening device 52 being adapted to return material particles of the material particles having a size larger than the second size to the first crushing device 31.
Similar to the above examples, the smaller the particle size of the material particles, the more advantageous it is to separate the filaments from the material. Typically, after primary crushing by the second crushing device 51, the size of the majority of the material particles is smaller than the second size. At this size, less power is expended and separation of the filaments is facilitated. However, there are also small amounts of material particles having a size greater than the second size. It is therefore necessary to provide a second screening device 52 which screens out material particles of a size greater than the second size and returns to the first crushing device 31 to re-crush them into particles of a size less than the second size for re-pyrolysis, thereby improving recovery of the filaments.
In some embodiments, the first screening device 32 is a linear vibrating screen.
In some embodiments, the second screening device 52 comprises at least two layers of screens of different sizes for discharging the filaments of material particles discharged from the second crushing device 51 to different collecting devices in different size specifications.
The second screening device 52 classifies the fiber filaments according to different sizes, and the fiber filaments with different sizes are collected independently, so that the method can be suitable for the use requirements of more scenes and the recovery value of the fiber filaments can be improved as much as possible.
According to the utility model, the fiber filaments in the wind power blade can be effectively recovered by soaking, drying, crushing, pyrolysis and secondary combustion of the blade blocks, the recovery purity of the fiber filaments is more than 95%, and the strength of the fibers is more than 90%.
It should also be noted that the above-mentioned systems and devices all employ a micro negative pressure design, so as to prevent exhaust gas leakage and environmental pollution.
It is noted that relational terms such as first and second, and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of additional identical elements in a process, method, article or apparatus that comprises the element.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. An efficient pyrolysis recovery system for wind power blades, comprising:
the pretreatment system (1) is used for cutting the wind power blade to be treated into blade blocks with the size smaller than the first size;
a soaking and drying system (2) comprising a soaking tank (21) and a dryer (22), wherein the soaking tank (21) is used for soaking the blade blocks, and the dryer (22) is used for drying the soaked blade blocks;
a first crushing system (3) comprising a first crushing device (31), the first crushing device (31) being for crushing dried blade pieces into blade particles, the blade particles comprising resin and filaments;
the pyrolysis system (4) comprises a pyrolysis furnace (41) and a heating furnace (42), wherein a first inlet of the pyrolysis furnace (41) is communicated with an outlet of the first crushing device (31), a second inlet of the pyrolysis furnace is communicated with an outlet of the heating furnace (42), a solid outlet of the pyrolysis furnace (41) is communicated with the second crushing system (5), and a gas outlet of the pyrolysis furnace (41) is communicated with the outside; the heating furnace (42) is used for providing high-temperature flue gas with preset temperature for the pyrolysis furnace (41), and the pyrolysis furnace (41) is used for pyrolyzing the blade particles discharged from the first crushing device (31) under preset conditions to obtain pyrolysis gas and a material containing fiber yarns;
the second crushing system (5) comprises a second crushing device (51), a solid outlet of the pyrolysis furnace (41) is communicated with an inlet of the second crushing device (51), and the second crushing device (51) is used for crushing materials containing fiber filaments discharged from the pyrolysis furnace (41) into material particles so as to obtain the fiber filaments.
2. A wind power plant blade efficient pyrolysis recovery system according to claim 1, wherein the first crushing system (3) further comprises a first screening device (32), an inlet of the first screening device (32) being in communication with an outlet of the first crushing device (31), an outlet of the first screening device (32) being in communication with an inlet of the first crushing device (31) and a first inlet of the pyrolysis furnace (41), respectively, the first screening device (32) being adapted to return blade particles of the blade particles of a size larger than the second size to the first crushing device (31) and to transport blade particles of a size smaller than the second size to the pyrolysis furnace (41).
3. A wind power blade efficient pyrolysis recovery system according to claim 2, further comprising a dust removal system (6) and a secondary combustion system (7), wherein a gas outlet of the pyrolysis furnace (41) is in communication with an inlet of the dust removal system (6), an outlet of the dust removal system (6) and a gas outlet of the dryer (22) are in communication with an inlet of the secondary combustion system (7), respectively, and the secondary combustion system (7) is adapted to burn organic gases discharged from the dryer (22) and the dust removal system (6).
4. A high efficiency pyrolysis recovery system for wind power blades according to claim 3, further comprising a purification system (8), said purification system (8) comprising a waste heat recovery device (81), a scrubber (82) and an activated carbon canister (83); the waste heat recovery device (81) comprises a cold source inlet, a cold source outlet, a heat source inlet and a heat source outlet, wherein the heat source inlet is communicated with the outlet of the secondary combustion system (7), the heat source outlet is communicated with the inlet of the washing tower (82), the cold source inlet is communicated with the gas outlet of the dryer (22), the cold source outlet is communicated with the gas inlet of the dryer (22), the outlet of the washing tower (82) is communicated with the inlet of the activated carbon adsorption tank (83), and the outlet of the activated carbon adsorption tank (83) is communicated with the outside.
5. A wind power plant blade efficient pyrolysis recovery system according to claim 2, wherein the second crushing system (5) further comprises a second screening device (52), an inlet of the second screening device (52) being in communication with an outlet of the second crushing device (51), an outlet of the second screening device (52) being in communication with an inlet of the first crushing device (31), the second screening device (52) being for returning material particles of the material particles of a size larger than the second size to the first crushing device (31).
6. The high efficiency pyrolysis recovery system for wind turbine blades of claim 1 wherein the first size is 1 meter.
7. A high-efficiency pyrolysis recovery system for wind power blades according to claim 2, wherein,
the second dimension is 50 millimeters.
8. The efficient pyrolysis recovery system for wind power blades according to claim 1, wherein,
the first crushing device (31) is a two-stage crusher.
9. A high-efficiency pyrolysis recovery system for wind power blades according to claim 2, wherein,
the first screening device (32) is a linear vibrating screen.
10. A wind turbine blade high efficiency pyrolysis recovery system according to claim 5, wherein the second screening means (52) comprises at least two layers of screens of different sizes for arranging the filaments in the material particles discharged from the second crushing means (51) to different collecting means according to different size specifications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321347231.0U CN219785989U (en) | 2023-05-30 | 2023-05-30 | Efficient pyrolysis recovery system for wind power blades |
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