Recovery processing device for retired photovoltaic laminated parts

Abstract

The utility model discloses a recovery processing device for retired photovoltaic laminated parts. The recovery processing device comprises a feeding mechanical arm, a conveying roller way, a preheater, a nitrogen replacement bin, a pyrolyzing furnace, an oxidizing furnace, a cooling bin and a discharging mechanical arm, the preheater is provided with a preheating cavity, and the conveying roller way conveys towards the inlet direction of the preheater; the preheater is used for conveying a preheated product into the nitrogen replacement device through a conveying belt; a heating device is arranged in the pyrolyzing furnace, and the nitrogen replacement bin conveys products passing through the nitrogen replacement bin to the pyrolyzing furnace through a conveying belt. The pyrolyzing furnace is used for conveying products in the pyrolyzing furnace to the oxidizing furnace through a conveying belt; the oxidation furnace conveys products in the oxidation furnace to the cooling bin through the conveying belt. By adopting the above arrangement and adopting a process route of combining pyrolysis with oxidation, organic matters and surface carbon deposition can be removed, and complete toughened glass and silicon battery pieces can be obtained.

Description

Technical Field

[0001] This utility model belongs to the technical field of resource recycling of decommissioned photovoltaic laminates, specifically relating to a decommissioned photovoltaic laminate recycling and processing device. Background Technology

[0002] The lifespan of photovoltaic laminates is typically 25-30 years, but in actual applications, under natural conditions such as sunlight, rain, snow, and sandstorms, the actual lifespan is only around 20 years. my country's photovoltaic market experienced rapid growth starting in 2010, and based on forecasts of photovoltaic laminate lifespan, a large number of these laminates will be decommissioned in the coming years. Failure to recycle them rationally and efficiently will lead to serious environmental problems and resource waste.

[0003] Existing photovoltaic laminates mainly consist of tempered glass, EVA encapsulating film, aluminum, silicon wafers, tin-coated solder ribbon, silver, and a TPT backsheet. Tempered glass, silicon, silver, copper, and aluminum have significant economic value. Currently, the main methods for processing retired photovoltaic laminates are physical, chemical, and pyrolysis. Physical methods involve crushing and separating the components, but this method cannot strictly separate different components. Chemical methods dissolve the EVA adhesive and backsheet, which is time-consuming and generates large amounts of waste liquid, making large-scale industrial production impossible. Therefore, there is room for improvement. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a recycling and processing device for retired photovoltaic laminates, which adopts a process route of pyrolysis combined with oxidation, can remove organic matter and surface carbon, and can obtain complete tempered glass and silicon solar cells.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A recycling and processing device for decommissioned photovoltaic laminates includes a loading robotic arm, a conveyor roller conveyor, a preheater, a nitrogen purging chamber, a pyrolysis furnace, an oxidation furnace, a cooling chamber, and a unloading robotic arm. The preheater has a preheating chamber, and the conveyor roller conveyor transports materials towards the inlet of the preheater. The preheater conveys the preheated product to the nitrogen purging chamber via a conveyor belt. The pyrolysis furnace is equipped with a heating device, and the nitrogen purging chamber conveys the product passing through the nitrogen purging chamber to the pyrolysis furnace via a conveyor belt. The pyrolysis furnace conveys the product to the oxidation furnace via a conveyor belt. The oxidation furnace conveys the product to the cooling chamber via a conveyor belt.

[0007] Furthermore, the preheater is provided with a first flue gas heating pipe, which extends along the length of the conveyor belt in the preheating chamber. The preheating chamber has a first flue gas outlet, which is connected to an external exhaust gas treatment system.

[0008] Furthermore, the nitrogen replacement chamber is equipped with a first waste gas outlet and a first nitrogen inlet, and an oxygen analyzer is installed inside the nitrogen replacement chamber.

[0009] Furthermore, the pyrolysis furnace includes a first outer shell, an inner cylinder disposed within the first outer shell, and insulation cotton disposed between the first outer shell and the inner cylinder; the heating device includes a second flue gas heating pipe and a first electric heating pipe disposed within the pyrolysis furnace, the second flue gas heating pipe extending along the length direction of the conveyor belt of the pyrolysis furnace, the first electric heating pipe being perpendicular to the length direction of the conveyor belt of the pyrolysis furnace, and the number of first electric heating pipes being multiple, with the multiple first electric heating pipes being spaced apart along the length direction of the conveyor belt of the pyrolysis furnace.

[0010] Furthermore, the pyrolysis furnace has a second flue gas outlet, the preheating chamber of the preheater has a first flue gas inlet, and the second flue gas outlet is connected to the first flue gas inlet through a pipeline.

[0011] Furthermore, it also includes a secondary combustion chamber. The pyrolysis furnace has a pyrolysis gas outlet and a second flue gas inlet. The secondary combustion chamber has a third flue gas outlet and a pyrolysis gas inlet. The pyrolysis gas outlet is connected to the pyrolysis gas inlet through a pipeline, and the third flue gas outlet is connected to the second flue gas inlet through a pipeline to further supply flue gas to the pyrolysis furnace.

[0012] Furthermore, the pyrolysis furnace is provided with a second nitrogen inlet and a first explosion vent, and the secondary combustion chamber is provided with a second explosion vent.

[0013] Furthermore, the oxidation furnace is provided with an air inlet, a third nitrogen inlet, and a second exhaust gas outlet. The second exhaust gas outlet is located above the air inlet and the third nitrogen inlet. A second electric heating tube is provided inside the oxidation furnace, and the second electric heating tube extends along the length of the conveyor belt of the oxidation furnace.

[0014] Furthermore, the cooling chamber includes a second outer shell and a water-cooling jacket disposed on the inner wall of the second outer shell, and the surface of the second outer shell is provided with a circulating water inlet and a circulating water outlet.

[0015] Furthermore, the loading end of the loading robotic arm is equipped with a vacuum suction cup connected to an air extraction device, which is used to pick up photovoltaic laminate products; the unloading end of the unloading robotic arm is equipped with a scraper, which is used to separate the upper tempered glass and the lower battery panel.

[0016] This utility model has the following beneficial effects:

[0017] Compared with existing technologies, this utility model's retired photovoltaic laminate recycling and processing device can recycle tempered glass as a whole panel, improving the recovery rate of silicon wafers and metals. By setting up a preheater, the waste heat of flue gas can be utilized to reduce the energy consumption of the downstream pyrolysis. Furthermore, the photovoltaic laminate is preheated before being sent into the pyrolysis furnace, which can reduce the temperature difference between the material and the furnace, avoiding rapid heating that would reduce the strength of the tempered glass. The pyrolysis furnace uses flue gas heating + electric heating to reduce the energy consumption of the device. During the pyrolysis of the EVA adhesive and backsheet of the retired photovoltaic laminate, some carbon deposits are recovered. Then, by setting up an oxidation furnace, unoxidized organic matter and carbon deposits can be removed. The compressed air in the oxidation furnace is evenly distributed with multiple inlets, which can accelerate the atmosphere disturbance in the furnace and improve the oxidation efficiency. After cooling, the connection between the tempered glass and the solar panel can be separated due to the temperature drop. Then, the upper tempered glass and the lower solar panel can be collected separately by the unloading mechanism. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the retired photovoltaic laminate recycling and processing device of this utility model.

[0019] In the diagram: 1. Feeding robotic arm; 2. Conveying roller conveyor; 3. Preheater; 31. First conveyor belt; 32. First flue gas heating pipe; 33. First flue gas outlet; 34. First flue gas inlet; 4. Nitrogen replacement chamber; 41. Second conveyor belt; 42. First nitrogen inlet; 43. First waste gas outlet; 5. Pyrolysis furnace; 51. First outer shell; 52. Inner cylinder; 53. Insulation cotton; 54. Second flue gas inlet; 55. Pyrolysis gas outlet; 56. First explosion vent; 57. Second nitrogen inlet; 58. Third conveyor belt; 59. Second flue gas heating tube; 510. First electric heating tube; 511. Second flue gas outlet; 6. Second combustion chamber; 61. Pyrolysis gas inlet; 62. Third flue gas outlet; 63. Second explosion vent; 7. Oxidizer; 71. Fourth conveyor belt; 72. Air inlet; 73. Third nitrogen inlet; 74. Second waste gas outlet; 75. Second electric heating tube; 8. Cooling chamber; 81. Second outer shell; 82. Water cooling jacket; 83. Circulating water inlet; 84. Circulating water outlet; 85. Fifth conveyor belt; 9. Unloading robotic arm. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Terms such as “upper,” “inner,” “middle,” “left,” “right,” and “one” used in this specification are merely for clarity of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the present invention.

[0021] This utility model addresses the need for resource recycling and processing of decommissioned photovoltaic laminates by providing a processing equipment that improves the processing efficiency of decommissioned photovoltaic laminates. After processing by this device, clean, intact tempered glass panels and silicon solar cells are obtained. The following is a detailed description of the processing equipment of this utility model:

[0022] A device for recycling and processing decommissioned photovoltaic laminates, such as Figure 1 As shown, the system includes a loading robotic arm 1, a conveyor roller conveyor 2, a preheater 3, a nitrogen replacement chamber 4, a pyrolysis furnace 5, an oxidation furnace 7, a cooling chamber, and an unloading robotic arm 9. The loading robotic arm 1 loads retired photovoltaic laminates one by one onto the conveyor roller conveyor 2, so that the retired photovoltaic laminates are placed flat on the conveyor roller conveyor 2. The conveyor roller conveyor 2 is used to transfer the products to the preheater 3, where the retired photovoltaic laminates are preheated. Then, they are transferred to the nitrogen replacement chamber 4. This process is mainly to prevent the preheated retired photovoltaic laminates from reacting with oxygen. Then, they are transferred to the pyrolysis furnace 5 and alumina. The pyrolysis furnace 5 heats the retired photovoltaic laminates at high temperature to recover some of the carbon deposits. During the high-temperature oxidation process of alumina, unoxidized organic matter and carbon deposits in the products are removed. Then, they are transferred to the cooling chamber. After cooling down, the tempered glass and silicon solar cells of the retired photovoltaic laminates can be distributed relatively independently, which improves the efficiency of rapid separation of tempered glass and silicon solar cells.

[0023] In this embodiment, the loading robotic arm 1 can be a conventional robotic hand or gripper robot. The loading end of the loading robotic arm 1 is equipped with a vacuum suction cup connected to an air extraction device. The vacuum suction cup is used to pick up photovoltaic laminate products. The vacuum suction cup can reduce damage to the surface of the decommissioned photovoltaic laminate products and achieve the function of protecting the products.

[0024] In this embodiment, the preheater 3 has a preheating chamber, within which a first conveyor belt 31 is installed. The conveying surface of the first conveyor belt 31 is flush with the conveying surface of the conveying roller conveyor 2, which moves towards the inlet of the preheater 3 to place the decommissioned photovoltaic laminates on the conveying roller conveyor 2 onto the first conveyor belt 31 for further transport. A first flue gas heating pipe 32 is installed within the preheating chamber of the preheater 3. The first flue gas heating pipe 32 can be implemented using a finned flue gas duct. The first flue gas heating pipe 32 extends along the length of the conveyor belt within the preheating chamber. The preheating chamber has a first flue gas outlet 33, which is implemented using a solenoid valve and connected to an external exhaust gas treatment system. Therefore, the first flue gas heating pipe 32 of the preheater 3 can be used to preheat the decommissioned photovoltaic laminates at a preheating temperature of 250°C to 350°C. The first flue gas outlet 33 is used to discharge flue gas to the exhaust gas treatment system, reducing the continuous rise in temperature within the preheating chamber. The exhaust gas treatment system can be a conventional exhaust gas treatment system with existing technology, used to reduce temperature (which can be achieved by cooling with a water tower), remove harmful gases (such as carbon monoxide, hydrogen sulfide, etc.), and filter particulate impurities (which can be achieved by using filter cotton, filter plugs, filter tubes or filter screens).

[0025] In this embodiment, a second conveyor belt 41 is installed inside the nitrogen replacement chamber 4. The conveying surface of the second conveyor belt 41 is aligned with the conveying surface of the first conveyor belt 31. The preheater 3 transfers the preheated decommissioned photovoltaic laminate to the second conveyor belt 41 of the nitrogen replacement chamber 4 via the first conveyor belt 31, thus placing the preheated photovoltaic laminate inside the nitrogen replacement chamber 4. The nitrogen replacement chamber 4 has a first waste gas outlet 43 and a first nitrogen inlet 42, both of which are controlled by solenoid valves. An oxygen analyzer is installed inside the nitrogen replacement chamber 4 to measure the oxygen content within the chamber. Therefore, after the decommissioned photovoltaic laminate enters the replacement chamber, the solenoid valve of the first nitrogen inlet is opened to replace the air in the chamber, reducing the risk of premature oxidation of the decommissioned photovoltaic laminate before it enters the pyrolysis furnace 5. When the oxygen content in the replacement chamber is below 2%, the decommissioned photovoltaic laminate can be further transferred to the pyrolysis furnace 5.

[0026] In this embodiment, a third conveyor belt 58 is provided inside the pyrolysis furnace 5. The conveying surface of the third conveyor belt 58 is aligned with the conveying surface of the second conveyor belt 41. The nitrogen replacement chamber 4 transports the decommissioned photovoltaic laminate to the second conveyor belt 41 through the second conveyor belt 41, so that the preheated photovoltaic laminate is placed in the pyrolysis furnace 5 for the deheating process. In the pyrolysis process, the high temperature environment will cause the EVA adhesive and backsheet in the decommissioned photovoltaic laminate to be pyrolyzed, thereby clearly exposing the tempered glass and solar panel distributed on the top and bottom, where a small amount of carbon deposits remain.

[0027] Regarding the pyrolysis furnace 5, the pyrolysis furnace 5 includes a first outer shell 51, an inner cylinder 52 disposed within the first outer shell 51, and insulation cotton 53 disposed between the first outer shell 51 and the inner cylinder 52. The insulation cotton 53 is used to maintain a constant temperature inside the pyrolysis furnace 5. A second flue gas heating pipe 59 and a first electric heating pipe are disposed inside the inner cylinder 52 of the pyrolysis furnace 5. The second flue gas heating pipe 59 extends along the length direction of the conveyor belt of the pyrolysis furnace 5. The first electric heating pipes 510 are perpendicular to the length direction of the conveyor belt of the pyrolysis furnace 5. There are multiple first electric heating pipes 510, and the multiple first electric heating pipes 510 are distributed at intervals along the length direction of the conveyor belt of the pyrolysis furnace 5. Among them, the second flue gas heating tube 59 adopts a flue gas pipeline to supply heat to the pyrolysis furnace 5, thereby realizing the pyrolysis of the decommissioned photovoltaic laminate at high temperature. The outer wall of the pipeline is equipped with fins to improve heat exchange efficiency. At the same time, the first electric heating tube 510 can use a finned flue gas pipeline to realize the heating function, mainly as a supplement to the insufficient pyrolysis energy of the decommissioned photovoltaic laminate.

[0028] This utility model also includes a secondary combustion chamber 6. In order to further provide high-temperature flue gas to the pyrolysis furnace 5 to provide pyrolysis energy for the decommissioned photovoltaic laminates, the following configuration is adopted: the pyrolysis furnace 5 has a pyrolysis gas outlet 55 and a second flue gas inlet 54, and the secondary combustion chamber 6 has a third flue gas outlet 62 and a pyrolysis gas inlet 61. The pyrolysis gas outlet 55, the second flue gas inlet 54, the third flue gas outlet 62, and the pyrolysis gas inlet 61 are all implemented by pipe joints or valve-type pipe joints. The pyrolysis gas outlet 55 is connected to the pyrolysis gas inlet 61 through a pipe, and the third flue gas outlet 62 is connected to the second flue gas inlet 54 through a pipe. Therefore, the pyrolysis furnace 5 can provide pyrolysis gas to the secondary combustion chamber 6 to further provide heat during combustion. At the same time, the high-temperature flue gas generated by the secondary combustion chamber 6 can be discharged through the second flue gas inlet 54 through a pipe to enter the pyrolysis furnace 5, thereby providing pyrolysis energy for the decommissioned photovoltaic laminates in the pyrolysis furnace 5, thereby improving the pyrolysis efficiency.

[0029] In this embodiment, in order to utilize the excess flue gas from the pyrolysis furnace 5 to provide heat through the preheater 3 for energy recycling, the pyrolysis furnace 5 is provided with a second flue gas outlet 511, and the preheating chamber of the preheater 3 is provided with a first flue gas inlet 34. Both the first flue gas outlet 33 and the first flue gas inlet 34 are valve-type pipe joints, and the second flue gas outlet 511 is connected to the first flue gas inlet 34 through a pipe. Therefore, under certain circumstances, such as when the temperature of the pyrolysis furnace 5 is too high or when the pyrolysis furnace 5 stops working, the high-temperature flue gas inside the pyrolysis furnace 5 can be discharged into the preheater 3 to preheat the decommissioned photovoltaic laminates, thereby achieving efficient heat utilization.

[0030] In this embodiment, to prevent excessive gas expansion and potential hazards caused by excessively high temperatures inside the pyrolysis furnace 5 and the secondary combustion chamber 6, the pyrolysis furnace 5 is equipped with a first explosion vent 56, and the secondary combustion chamber 6 is equipped with a second explosion vent 63. Both the first explosion vent 56 and the second explosion vent 63 are implemented using solenoid valves. Furthermore, both the pyrolysis furnace 5 and the secondary combustion chamber 6 are equipped with pressure sensors and / or temperature sensors. When the pressure or temperature sensor detects an excessive pressure, the first explosion vent 56 and the second explosion vent 63 will be activated to release internal gases, reducing the risk of an explosion and improving the safety of the pyrolysis process of decommissioned photovoltaic laminates. Simultaneously, when the pyrolysis furnace 5 stops operating, to efficiently suppress continued pyrolysis combustion within the pyrolysis furnace 5, a second nitrogen inlet 57 is provided. The second nitrogen inlet 57 is implemented using a solenoid valve. Therefore, by releasing nitrogen into the pyrolysis furnace 5, continued pyrolysis combustion within the pyrolysis furnace 5 can be effectively suppressed.

[0031] In this embodiment, a fourth conveyor belt 71 is provided inside the oxidation furnace 7. The conveying surface of the fourth conveyor belt 71 is aligned with the conveying surface of the third conveyor belt 58 so that the third conveyor belt 58 can transport the pyrolyzed decommissioned photovoltaic laminate to the oxidation furnace 7 for further oxidation of the carbon deposits on the decommissioned photovoltaic laminate, thereby fully exposing the tempered glass and solar panel distributed on the upper and lower parts of the decommissioned photovoltaic laminate.

[0032] Regarding the oxidizing furnace 7, the oxidizing furnace 7 has an air inlet 72, a third nitrogen inlet 73, and a second exhaust gas outlet 74. The second exhaust gas outlet 74 is located above the air inlet 72 and the third nitrogen inlet 73. The air inlet 72, the third nitrogen inlet 73, and the second exhaust gas outlet 74 are all implemented by solenoid valves. The oxidizing furnace 7 is equipped with a second electric heating tube 75, which extends along the length of the fourth conveyor belt 71. Therefore, the temperature inside the oxidation furnace 7 is controlled by the electric heating function of the second electric heating tube 75. At the same time, by setting the air inlet 72 and the second nitrogen inlet 57, the air and nitrogen ratio inside the oxidation furnace 7 can be controlled, thereby adjusting the oxygen content inside the oxidation furnace 7. This reduces the possibility of excessively high oxygen content inside the oxidation furnace 7, which could lead to excessively high temperature or even open flame, and also reduces the impact on the strength of the tempered glass. Meanwhile, since the second exhaust gas outlet 74 is located above the air inlet 72 and the third nitrogen inlet 73, the exhaust gas generated by the carbon deposition oxidation process inside the oxidation furnace 7 can be discharged from the top and then discharged to the exhaust gas treatment system through a pipe. This exhaust gas treatment system is consistent with the exhaust gas treatment system of the preheater 3.

[0033] In this embodiment, a fifth conveyor belt 85 is provided inside the cooling chamber 8. The conveying surface of the fifth conveyor belt 85 is aligned with the conveying surface of the fourth conveyor belt 71 so that the fourth conveyor belt 71 can transport the pyrolytically oxidized decommissioned photovoltaic laminate to the cooling chamber 8. In the pyrolytically oxidized decommissioned photovoltaic laminate, the upper tempered glass and the lower solar panel can be clearly exposed. At the same time, a small amount of carbon deposits have also been oxidized in the oxidation furnace 7. Therefore, after being cooled by the cooling chamber 8, the connection between the tempered glass and the solar panel can be separated due to the temperature reduction.

[0034] Regarding the cooling chamber 8, the cooling chamber 8 includes a second outer shell 81 and a water-cooled jacket 82 disposed on the inner wall of the second outer shell 81. The surface of the second outer shell 81 is provided with a circulating water inlet 83 and a circulating water outlet 84. The circulating water inlet 83 and the circulating water outlet 84 can be pipe joints, and the circulating water inlet 83 and the circulating water outlet 84 are distributed at the upper and lower diagonal positions of the second outer shell 81, with the circulating water inlet 83 positioned at the top. Therefore, the replacement efficiency of the cooling water in the water-cooled jacket can be improved, thereby improving the cooling effect.

[0035] In this embodiment, the unloading robotic arm 9 can be a conventional robotic hand or gripper robot. The unloading end of the unloading robotic arm 9 is equipped with a scraper, which is used to separate the upper tempered glass and the lower battery panel. The separation method is that the scraper of the unloading robotic arm 9 initially scrapes off the upper tempered glass, and then it is further transported forward by a conveyor belt to collect the lower battery panel, thereby realizing the function of separating the upper tempered glass and the lower battery panel.

[0036] In summary, compared with existing technologies, the retired photovoltaic laminate recycling device of this invention can recycle tempered glass as a whole panel, improving the recovery rate of silicon wafers and metals. By setting up a preheater 3, the waste heat of flue gas can be utilized to reduce the energy consumption of the downstream pyrolysis. Furthermore, the photovoltaic laminate is preheated before being sent into the pyrolysis furnace 5, which can reduce the temperature difference between the material and the furnace, avoiding rapid heating that would reduce the strength of the tempered glass. The pyrolysis furnace 5 uses flue gas heating + electric heating to reduce the energy consumption of the device. During the pyrolysis of the EVA adhesive and backsheet of the retired photovoltaic laminate in the pyrolysis furnace 5, some carbon deposits are recovered. Then, by setting up an oxidation furnace 7, unoxidized organic matter and carbon deposits can be removed. The compressed air in the oxidation furnace 7 is evenly distributed with multiple inlets, which can accelerate the disturbance of the atmosphere in the furnace and improve the oxidation efficiency. After cooling, the connection between the tempered glass and the solar panel can be separated due to the temperature drop of the laminate. Then, the upper tempered glass and the lower solar panel can be collected separately by the unloading mechanism.

[0037] The embodiments of this utility model are not limited thereto. Based on the above content of this utility model, using ordinary technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, this utility model can also be modified, replaced or combined in various other forms, all of which fall within the scope of protection of this utility model.

Claims

1. A decommissioned photovoltaic laminate recycling apparatus, characterized by, include: Loading robotic arm; Conveyor roller conveyor; A preheater having a preheating chamber, wherein the conveying roller conveyor moves toward the inlet direction of the preheater; Nitrogen replacement chamber, wherein the preheater transports the preheated product into the nitrogen replacement chamber via a conveyor belt; A pyrolysis furnace is provided with a heating device, and the nitrogen replacement chamber is used to transfer the product passing through the nitrogen replacement chamber to the pyrolysis furnace via a conveyor belt. An oxidation furnace, wherein the pyrolysis furnace transfers the product from the pyrolysis furnace to the oxidation furnace via a conveyor belt; A cooling chamber is provided, and the oxidation furnace transfers the products inside the oxidation furnace to the cooling chamber via a conveyor belt. Unloading robotic arm.

2. The decommissioned photovoltaic laminate recycling processing apparatus of claim 1, wherein, The preheater is equipped with a first flue gas heating pipe, which extends along the length of the conveyor belt in the preheating chamber. The preheating chamber has a first flue gas outlet, which is connected to an external exhaust gas treatment system.

3. The decommissioned photovoltaic laminate recycling processing apparatus of claim 1, wherein, The nitrogen replacement chamber has a first waste gas outlet and a first nitrogen inlet, and an oxygen analyzer is installed inside the nitrogen replacement chamber.

4. The decommissioned photovoltaic laminate recycling processing apparatus of claim 1, wherein, The pyrolysis furnace includes a first outer shell, an inner cylinder disposed within the first outer shell, and insulation cotton disposed between the first outer shell and the inner cylinder; the heating device includes a second flue gas heating pipe and a first electric heating pipe disposed within the pyrolysis furnace, the second flue gas heating pipe extending along the length direction of the conveyor belt of the pyrolysis furnace, the first electric heating pipe being perpendicular to the length direction of the conveyor belt of the pyrolysis furnace, and the number of first electric heating pipes being multiple, with the multiple first electric heating pipes being spaced apart along the length direction of the conveyor belt of the pyrolysis furnace.

5. The decommissioned photovoltaic laminate recycling processing apparatus of claim 4, wherein, The pyrolysis furnace has a second flue gas outlet, and the preheating chamber of the preheater has a first flue gas inlet. The second flue gas outlet is connected to the first flue gas inlet through a pipeline.

6. The decommissioned photovoltaic laminate recycling processing apparatus of claim 4, wherein, It also includes a secondary combustion chamber. The pyrolysis furnace has a pyrolysis gas outlet and a second flue gas inlet. The secondary combustion chamber has a third flue gas outlet and a pyrolysis gas inlet. The pyrolysis gas outlet is connected to the pyrolysis gas inlet through a pipeline, and the third flue gas outlet is connected to the second flue gas inlet through a pipeline to further supply flue gas to the pyrolysis furnace.

7. The decommissioned photovoltaic laminate recycling processing apparatus of claim 6, wherein, The pyrolysis furnace is provided with a second nitrogen inlet and a first explosion vent, and the second combustion chamber is provided with a second explosion vent.

8. The decommissioned photovoltaic laminate recycling processing apparatus of claim 1, wherein, The oxidation furnace has an air inlet, a third nitrogen inlet, and a second waste gas outlet. The second waste gas outlet is located above the air inlet and the third nitrogen inlet. A second electric heating tube is installed inside the oxidation furnace and extends along the length of the conveyor belt of the oxidation furnace.

9. The decommissioned photovoltaic laminate recycling processing apparatus of claim 1, wherein, The cooling chamber includes a second outer shell and a water-cooling jacket disposed on the inner wall of the second outer shell. The surface of the second outer shell is provided with a circulating water inlet and a circulating water outlet.

10. The decommissioned photovoltaic laminate recycling processing apparatus of claim 1, wherein, The loading end of the loading robotic arm is equipped with a vacuum suction cup connected to an air extraction device, which is used to pick up photovoltaic laminate products; the unloading end of the unloading robotic arm is equipped with a scraper, which is used to separate the upper tempered glass and the lower battery panel.

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