Solar cell module recycling system and solar cell module recycling method

Abstract

To provide a solar battery module recycling system capable of effectively recovering valuable substances by one processing, and recovering and reusing a recovery instrument, and provide a solar battery module recycling method.SOLUTION: A solar battery module recycling system includes: a thermal decomposition furnace performing thermal decomposition processing of a used solar cell module mounted on a recovery instrument; a module recovery conveyor recovering a thermally decomposed solar cell module thermally decomposed by the thermal decomposition furnace together with the recovery instrument; a glass recovery conveyor recovering plate glasses included in the thermally decomposed solar cell module shifted to the module recovery conveyor; a valuable substance recovery part recovering valuable substances other than the plate glasses included in the thermally decomposed solar cell module; and an instrument recovery part recovering the recovery instrument remaining on the module recovery conveyor after the plate glasses and the valuable substances are recovered.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a solar cell module recycling system and a solar cell module recycling method, which recover glass and valuable materials from a spent solar cell module that has been pyrolyzed while being placed on a recovery tool, and recover and reuse the recovery tool.

Background Art

[0002] Towards the realization of a low-carbon society, the acceleration of CO2 reduction through the utilization of renewable energy including solar power generation is about to progress. While the introduction of solar power generation has advanced significantly, issues regarding recycling at the time of disposal of solar cell modules have been pointed out.

[0003] The structure of a general solar cell module is composed of three layers: a sheet glass on the surface, a sealing resin layer on the inner side, and a back sheet on the back surface. Ribbon wires for interconnecting the cells are wired in the sealing resin layer. The sealing resin is required to have transparency, flexibility, adhesiveness, tensile strength, weather resistance and the like, and an ethylene-vinyl acetate copolymer (hereinafter abbreviated as "EVA") is generally used, which serves to bond the sheet glass, the cells and the back sheet by heating and pressurizing.

[0004] A technology for recycling solar cell modules has been proposed, in which the solar cell module is heated in an electric furnace or the like under an oxidizing atmosphere to thermally decompose EVA, thereby removing the sealing material and separating the cell portion and the glass substrate.

[0005] The present applicant has also proposed a treatment method for recovering valuable materials from a solar cell module, in which the solar cell module is placed with the back sheet surface facing downward on a porous molded body made of a heat-resistant material supporting a transition metal oxide as a catalyst, and the solar cell module is heated in a heating furnace under an oxidizing atmosphere with an oxygen concentration of 15% or more to melt the resin component and then combust the resin component (see Patent Document 1).

Prior Art Documents

Patent Documents

[0006] [Patent Document 1] International Publication No. 2020 / 031661 [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] However, even if the above processing method could be implemented, recovering the glass plates, which are one of the valuable materials, from the thermally decomposed solar cell modules would require cooling and removing the high-temperature glass plates. Furthermore, since the other valuable materials, the cells and ribbons, are scattered around, recovering them all at once would require a great deal of effort and time.

[0008] Furthermore, in order to continuously repeat the cycle of thermally decomposing solar cell modules to recover the glass plates and other valuable materials, it is convenient to perform the cycle with the solar cell modules placed on a recovery device such as a mesh. However, when recovering the recovery device, it is also necessary to remove the glass plates and other valuable materials using the procedure described above, which requires a great deal of effort and time.

[0009] Furthermore, since flat glass can be used as a raw material for high-purity recycled glass, it is desirable to separate and collect it in its original flat glass state. The object of the present invention is to provide a solar cell module recycling system and a solar cell module recycling method that can efficiently recover valuable materials in a single process and recover and reuse the recovery equipment. [Means for solving the problem]

[0010] According to the solar cell module recycling system of the present invention, A pyrolysis furnace for pyrolysis treatment of used solar modules mounted on the recovery equipment, A module recovery conveyor for recovering the thermally decomposed solar cell modules, along with the recovery equipment, in the aforementioned thermal decomposition furnace. A glass recovery conveyor for recovering the plate glass contained in the pyrolysis solar cell module that has been transferred to the module recovery conveyor, A valuable materials recovery unit for recovering valuable materials other than the glass plate contained in the thermally decomposed solar cell module, The system is characterized by comprising a device recovery unit for recovering the recovery devices remaining on the module recovery conveyor after the plate glass and the valuable materials have been recovered.

[0011] In this way, the module recovery conveyor recovers the thermally decomposed solar cell modules along with their recovery equipment, and then separates and recovers the glass plates and other valuable materials. Finally, the equipment recovery unit recovers the recovery equipment remaining on the module recovery conveyor. This allows for the efficient recovery of glass and other valuable materials in a single process, as well as the recovery equipment to be recovered and reused.

[0012] Furthermore, according to the solar cell module recycling system of the present invention, The module recovery conveyor is characterized in that it rotates with the recovery device fixed to the conveyor belt from the time the solar cell module to be decomposed is recovered together with the recovery device until the recovery device is recovered by the device recovery unit.

[0013] In this way, since the retrieval device rotates while remaining fixed to the conveyor belt until it is retrieved, when retrieving the retrieval device, it is sufficient to pick it up at the same position where it was transferred to the conveyor belt, allowing for efficient retrieval of the retrieval device.

[0014] Furthermore, according to the solar cell module recycling system of the present invention, The module retrieval conveyor is characterized by having fixing belts fixed parallel to both ends of the outer circumference other than the upper surface of the module retrieval conveyor.

[0015] This allows the recovery device to be moved while sandwiched between the conveyor belt and the fixing belt, preventing it from falling even when the conveyor belt rotates and the recovery device is positioned at the bottom of the modular recovery conveyor. Furthermore, since the fixing belt is open at the top, the recovery device can be easily picked up after it has completed one rotation, with the plate glass and other valuable materials separated and recovered.

[0016] Furthermore, according to the solar cell module recycling system of the present invention, The valuable material other than the plate glass is characterized by including cells and ribbon wires that connect the cells to each other.

[0017] In other words, the objective of this invention is to effectively recycle plate glass as a material for recycled glass, and to effectively recycle cells and ribbon wires as other valuable materials. Furthermore, according to the solar cell module recycling system of the present invention, The valuable material other than the aforementioned plate glass is characterized by further including granular glass.

[0018] In other words, some discarded solar cell modules already have broken glass plates (tempered glass) from the start, and in these cases, the glass plates are crushed into granules about 1 cm in size. In such cases, effectively recycling these granular glass particles together with the cells and ribbon wires is also an objective of this invention.

[0019] According to the solar cell module recycling method of the present invention, A pyrolysis process in which used solar modules mounted on a recovery device are pyrolyzed in a pyrolysis furnace. A module recovery process in which the thermally decomposed solar cell modules, which have been thermally decomposed in the thermal decomposition furnace, are transferred to a module recovery conveyor along with the recovery equipment for recovery. A glass recovery process for recovering the plate glass contained in the thermally decomposed solar cell module that has been transferred to the module recovery conveyor, a valuable material recovery step of recovering valuable materials other than sheet glass contained in the pyrolyzed solar cell module, after the sheet glass and the valuable materials are recovered, the method comprises a tool recovery step of recovering the recovery tool remaining on the module recovery conveyor.

[0020] In this way, the module recovery conveyor recovers the pyrolyzed solar cell module together with the recovery tool, and further separates and recovers the sheet glass and the other valuable materials, and then the tool recovery unit recovers the recovery tool remaining on the module recovery conveyor, whereby the glass and the other valuable materials can be efficiently recovered in a single treatment, and the recovery tool can be recovered and reused.

[0021] Further, according to the solar cell module recycling method of the present invention, in the module recovery step, the recovery tool rotates while being fixed to the conveyor belt.

[0022] In this way, the recovery tool rotates while being fixed to the conveyor belt until it is recovered, so when recovering the recovery tool, it is sufficient to pick up the recovery tool at the same position as when it was transferred to the conveyor belt, and the recovery tool can be recovered efficiently.

[0023] Further, according to the solar cell module recycling method of the present invention, The valuable materials other than the sheet glass include cells and ribbon wires connecting the cells to each other.

[0024] That is, it is an object of the present invention to effectively recycle the sheet glass as a material for recycled glass, and to effectively recycle the cells and the ribbon wires as other valuable materials. Further, according to the solar cell module recycling method of the present invention, The valuable materials other than the sheet glass further include granular glass.

[0025] In other words, some discarded solar cell modules already have broken glass plates (tempered glass) from the start, and in these cases, the glass plates are crushed into granules about 1 cm in size. In such cases, effectively recycling these granular glass particles together with the cells and ribbon wires is also an objective of this invention. [Effects of the Invention]

[0026] According to the present invention, it is possible to provide a solar cell module recycling system and a solar cell module recycling method that can efficiently recover valuable materials in a single process and recover and reuse the recovery equipment. [Brief explanation of the drawing]

[0027] [Figure 1] This is a schematic diagram showing a solar cell module according to an embodiment. [Figure 2] This is a schematic diagram showing a solar cell module recycling system according to an embodiment. [Figure 3] This is a schematic diagram showing the layer structure of a solar cell module mounted on a substrate according to the embodiment. [Figure 4] This is a schematic diagram showing the flow of a solar cell module recycling method according to an embodiment. [Figure 5] This is a schematic diagram showing the structure of the collection network (collection device) according to the embodiment. [Figure 6] This is a schematic diagram showing the process by which a solar cell module according to the embodiment is decomposed in a pyrolysis furnace. [Figure 7] This is a schematic diagram showing a module retrieval conveyor according to an embodiment. [Figure 8] This is a schematic diagram showing a collection network fixed to a module collection conveyor according to an embodiment. [Figure 9] This is a schematic diagram showing the separation of plate glass, cells and ribbon wire, and recovery net placed on a module recovery conveyor according to the embodiment. [Figure 10]This is a schematic diagram showing a cleaning device for cleaning plate glass collected by a glass collection conveyor according to an embodiment. [Figure 11] This is a schematic diagram showing a collection network fixed to a module collection conveyor according to another embodiment. [Modes for carrying out the invention]

[0028] Hereinafter, with reference to the drawings, a solar cell module recycling system according to an embodiment of the present invention (hereinafter referred to as the recycling system) will be described. Figure 1(a) is a schematic diagram of a solar cell module according to the embodiment viewed from above, and Figure 1(b) is a schematic diagram showing a cross-section thereof.

[0029] As shown in Figure 1(a), the solar cell module 2 has a rectangular shape, with cells (solar cell elements) 4 arranged in a matrix, and a frame 5 forming the outer frame. The frame 5 is mainly made of aluminum. Furthermore, as shown in Figure 1(b), the solar cell module 2 is constructed by stacking three layers from top to bottom: a glass plate 6, a sealing resin layer 8, and a backsheet 10. A terminal box 9 for supplying the power generated by the cells 4 to a storage battery or the like (not shown) is attached to the bottom. EVA is commonly used as the sealing resin, and polyethylene terephthalate (PET) is commonly used for the backsheet 10.

[0030] The sealing resin layer 8 seals the cells 4 and the ribbon wires 14 that connect the cells 4 to each other, and the sealing resin, cells 4, and ribbon wires 14 are firmly bonded together as a single unit within the sealing resin layer 8. For this reason, it is extremely difficult to disassemble the solar cell module 2 in this state and separate the glass plate 6 (tempered glass), cells 4, and ribbon wires 14.

[0031] Furthermore, any solar cell module 2 that has a resin backsheet and is not of the double-sided glass type can be used as the solar cell module 2 applicable to the present invention. Specifically, examples include monocrystalline silicon solar cells, polycrystalline silicon solar cells, amorphous silicon solar cells, heterojunction solar cells, CIS solar cells, CIGS solar cells, CdTe solar cells, and the like.

[0032] Figure 2 is a schematic diagram showing a recycling system 16 according to an embodiment. As shown in Figure 2, the recycling system 16 includes a removal zone 17 for removing the frame 5 and terminal box 9, a mounting zone 18 for mounting the solar cell modules 2, a pyrolysis furnace 20, a waiting zone 22 for feeding the solar cell modules 2 into the pyrolysis furnace 20, a discharge zone 26 for discharging the pyrolysis-decomposed solar cell modules 24 that have been pyrolysis-decomposed in the pyrolysis furnace 20, a recovery zone 28 for recovering the recovery net 40 (described later), a module recovery conveyor 30, a glass recovery conveyor 32 for recovering the glass plates 6 with a roller conveyor 32a (see Figure 9), a valuable materials recovery section 33 for recovering valuable materials other than the glass plates 6, a sorting machine 71 for separating valuable materials other than the glass plates 6 into cells 4 and ribbon wires 14, and a cleaning device 74 for cleaning the recovered glass plates 6.

[0033] Next, with reference to the drawings, a solar cell module recycling method according to an embodiment of the present invention will be described. First, the used solar cell modules 2 brought into the factory are moved to the removal zone 17, where the frames 5 and terminal boxes 9 are removed by a frame removal device (not shown). Note that removing the frames 5 before thermal decomposition has the advantage of simplifying the process, as it eliminates the need to cut the first filter 42 (described later) to match the size of the frames 5. However, to reduce the possibility of the glass plates 6 breaking during removal, the frames 5 may be removed after thermal decomposition.

[0034] Next, the solar cell module 2 is mounted in the mounting zone 18. In the mounting zone 18, as shown in Figure 3, a substrate 50 is already waiting, with a recovery net 40 (recovery device), a first filter 42, a second filter 44, and a tray 46 stacked in that order from top to bottom. The solar cell module 2 is placed on the recovery net 40 located on the uppermost layer of the substrate 50 (see Figures 2 and 4(a)).

[0035] Here, the first filter 42 mainly uses a porous molded body that has heat resistance. Specific materials include stable and common ceramic materials such as alumina, zirconia, silicon nitride, silicon carbide, cordierite, ferrite, barium titanate, lead zirconate titanate, forsterite, zircon, mullite, steatite, and aluminum nitride.

[0036] Furthermore, the second filter 44 is a modified version of the first filter 42 with a catalyst such as titanium dioxide or iron oxide attached. The tray 46 is located at the bottom layer of the substrate 50 and is a component that surrounds the central mesh-like portion with an outer frame; it is mainly made of iron.

[0037] Furthermore, a grid or other component may be placed between the recovery net 40 and the first filter 42 to secure a gap for accelerating thermal decomposition. Figure 5(a) shows the collection net 40. The collection net 40 is constructed by sandwiching the long edges of a rectangular wire mesh 54 with flat bars 56. Therefore, the collection net 40 has the property of bending in the short-side direction but not bending in the long-side direction.

[0038] Furthermore, a suspension portion 58 is formed on the upper surface of the flat bar 56 for suspending the retrieval net 40 by a lift 57 (see Figure 2). As shown in Figure 5(b), the flat bars 56 are positioned above and below the wire mesh 54, and the wire mesh 54 is held in place by fixing the upper and lower flat bars 56 with screws 60.

[0039] Furthermore, between the upper and lower flat bars 56, a flat bar with a C-shaped cross-section that holds the end of the wire mesh 54 may be added, or a flat bar that has a structure that holds the entire end of the wire mesh 54. This makes it possible to distribute the load that would otherwise be concentrated on the screws 60 when the wire mesh 54 is loaded, thereby improving the durability of the wire mesh 54.

[0040] The solar cell modules 2, placed on the substrate 50 in the mounting zone 18, are kept warm in the heating tank 61 and then transferred to the waiting zone 22 (see Figure 2), and then, as shown in Figure 4(b), are fed into the pyrolysis furnace 20. The solar cell modules 2 fed into the pyrolysis furnace 20 are subjected to pyrolysis while mounted on the recovery network 40 (pyrolysis process).

[0041] Figure 6 shows the process by which a solar cell module 2 is thermally decomposed when it is placed in a pyrolysis furnace 20. Specifically, when the solar cell module 2 is placed in the pyrolysis furnace 20, the sealing resin of the sealing resin layer 8 is thermally decomposed in the layer structure initially shown in Figure 6(a), as shown in Figure 6(b), and acetic acid gas 8a and polyethylene (PE) 8b are discharged from the sealing resin.

[0042] Next, as shown in Figure 6(c), the sealing resin melts, followed by the melting of the backsheet 10, as shown in Figure 6(d). Once the thermal decomposition is complete, as shown in Figure 6(e), only the white pigment 8c that was mixed into the sealing resin, along with the recovery net 40, the glass plate 6, the cells 4, and the ribbon wire 14 remain on the first filter 42. The thermal decomposition furnace 20 can decompose three solar cell modules 2 at once.

[0043] Next, as shown in Figure 4(b), the pyrolyzed solar cell module 24 is discharged to the discharge zone 26, and then, as shown in Figure 4(c), is transferred to the recovery zone 28. The recovery net 40 is then suspended by engaging a hook (not shown) of the lift 57 with the suspension part 58, and the pyrolyzed solar cell module 24 is removed from the substrate 50 while placed on the recovery net 40. As shown in Figure 7, the modules are transferred (recovered) together with the recovery net 40 to the module recovery conveyor 30 (module recovery process). In the recovery zone 28, substrates 50 from the first filter 42 onwards, which do not have a recovery net 40, remain waiting (see Figure 4(c)).

[0044] When the recovery net 40 is transferred to the modular recovery conveyor 30 (see Figure 8), the four corners of the recovery net 40 are fixed to the conveyor belt 30a by fixing parts (not shown) (fixing process). This prevents the recovery net 40 from falling if the conveyor belt 30a rotates and the recovery net 40 is positioned below the modular recovery conveyor 30.

[0045] The solar cell modules 24 that have been subjected to thermal decomposition are transferred to the module recovery conveyor 30, where they are naturally cooled on the conveyor belt 30a. After that, as shown in Figure 9, they are slid onto the glass recovery conveyor 32 and then recovered (see glass recovery process, Figure 2).

[0046] Meanwhile, the recovery net 40 remains fixed to the conveyor belt 30a and continues to rotate. The cells 4 and ribbon wires 14 contained in the pyrolysis solar cell module 24 fall from the conveyor belt 30a and are recovered by the valuable materials recovery unit 33 (valuable materials recovery process). The cells 4 and ribbon wires 14 recovered by the valuable materials recovery unit 33 are transported to the sorting machine 71 by the valuable materials conveyor 67, where they are separated into cells 4 and ribbon wires 14 and recycled as valuable materials.

[0047] Figure 10 is a schematic diagram showing a cleaning device 74 for cleaning the plate glass 6 collected by the glass recovery conveyor 32. As shown in Figure 10, the cleaning device 74 includes an upper brush support section 78a that supports the upper brush 76a and a lower structure section 78b that supports the lower brush 76b. It also includes an upper suction machine 80a and a lower suction machine 80b, respectively, for sucking up the residue of the plate glass 6 brushed by the brushes 76. In the glass recovery process, the glass plates 6 recovered by the glass recovery conveyor 32 are transported to a cleaning device 74 for further cleaning, where both the front and back surfaces are brushed. The glass plates 6 recovered by the glass recovery conveyor 32 may have residues of cells 4, ribbon wires 14, and resin used when bonding the frame 5 attached to them, but these residues are removed from the glass plates 6 by brushing them with the brush 76. After brushing, any remaining residue adhering to the glass plate 6 is sucked up by the upper and lower suction devices 80. As a result, the glass sheets 6 collected by the glass collection conveyor 32 are recycled as new glass sheets or other materials after any attached organic matter, metals, etc. are removed (cleaning process).

[0048] Furthermore, some of the discarded solar cell modules 2 already have broken glass plates 6 from the start. Since the glass plates 6 are tempered glass, they are crushed into granules of about 1 cm in size. When these are processed by thermal decomposition, the glass plates 6 are not recovered in their original form. Instead, they are recovered as granular glass along with the cells 4 and ribbon wires 14 by the valuable materials recovery unit 33. The sorting machine 71 separates them into crushed glass, cells 4, and ribbon wires 14, which are then recycled as valuable materials or waste glass.

[0049] Meanwhile, when the recovery net 40, which is fixed to the conveyor belt 30a of the module recovery conveyor 30, returns to its original position, it is suspended again by engaging the hook of the lift 57 (equipment recovery section) with the suspension section 58, as shown in Figure 4(d), and returned to the substrate 50 waiting in the recovery zone 28 (equipment recovery process). The substrate 50, which has been returned via the recovery network 40, is then transported back to the mounting zone 18, after which a new solar cell module 2 is mounted.

[0050] According to this embodiment of the invention, it is possible to provide a solar cell module recycling system and solar cell module recycling method that can efficiently recover glass and other valuable materials in a single process, and also recover and reuse the recovery equipment.

[0051] Specifically, the module recovery conveyor 30 recovers the pyrolysis-decomposed solar cell modules 24 together with the recovery net 40, and then separates and recovers the glass plates 6 and other valuable materials. After that, the lift 57 recovers the recovery net 40 remaining on the module recovery conveyor 30. In this way, the glass and other valuable materials can be efficiently recovered in a single process, and the recovery net 40 can be recovered and reused.

[0052] Furthermore, since the recovery net 40 rotates while remaining fixed to the conveyor belt 30a until it is recovered, when recovering the recovery net 40, it is sufficient to pick it up at the same position as when it was transferred to the conveyor belt 30a, allowing for efficient recovery of the recovery net 40.

[0053] In the above-described embodiment, the recovery net 40 is fixed by a fixing part to prevent it from detaching from the conveyor belt 30a of the module recovery conveyor 30. However, as shown in Figure 11, two fixing belts 72 may be arranged in parallel at both ends of the outer circumference of the module recovery conveyor 30, excluding the upper surface. The fixing belts 72 do not rotate together with the conveyor belt 30a, and metal plates are preferably used as the material for them.

[0054] In this case, the recovery net 40 moves with both ends perpendicular to the direction of travel sandwiched between the conveyor belt 30a and the fixing belt 72 at the bottom and side of the modular recovery conveyor 30. This also prevents the recovery net 40 from falling when the conveyor belt 30a rotates and the recovery net 40 is positioned at the bottom of the modular recovery conveyor 30.

[0055] Furthermore, since the fixing belt 72 is open at the top, the collection net 40, after it has completed one rotation and the plate glass 6 and other valuable materials have been separated and collected, can be easily picked up.

[0056] Furthermore, the recovery net 40 can be rotated together with the conveyor belt 30a by the frictional force between it and the conveyor belt 30a, or it may be rotated while fixed to the conveyor belt 30a in combination with the fixing part.

[0057] Furthermore, while the above-described embodiment illustrates the use of a recovery net 40 as a recovery device for recovering the solar cell module 2, the recovery device does not necessarily have to be as shown in the above-described embodiment. In other words, it is sufficient to have heat resistance that can withstand heating by the pyrolysis furnace 20 and a structure that allows molten resin to pass through, as well as load-bearing capacity for stacking the cells 4, ribbon wires 14, and glass plates 6 after heat treatment, and furthermore, to be able to rotate while fixed to the conveyor belt 30a without the cells 4 and ribbon wires 14 falling through the gaps. Specific examples that satisfy these conditions include thin perforated metal sheets or a grid joined together.

[0058] Furthermore, in the above-described embodiment, the lift 57 is again used as the equipment retrieval unit for retrieving the retrieval net 40 from the module retrieval conveyor 30. However, the equipment retrieval unit is not limited to a lift-shaped object as long as it has the function of placing the retrieval net 40 on the module retrieval conveyor 30 and retrieving the retrieval net 40 onto the module retrieval conveyor 30. [Explanation of Symbols]

[0059] 2 Solar cell modules 4 cells 5 frames 6. Glass 8 Sealing resin layer 8a Acetic acid gas 8c White pigment 9 terminal box 10 Backseat 14 Ribbon wire 15. Oxygen concentration 16 Recycling System 17 Removal Zone 18 mounting zones 20 Pyrolysis furnace 22 Waiting Zone 24. Thermally decomposed solar cell modules 26 Discharge Zones 28 Recovery Zone 30 Module Recovery Conveyor 30a Conveyor belt 32 Glass Collection Conveyor 32a Roller conveyor 33. Valuable Materials Recovery Department 40 Recovery network 42 First Filter 44. Second filter 46 trays 50 circuit boards 54 Wire mesh 56 Flat Bar 57 Lifts 58 Suspended part 60 screws 61 Warming tank 67. Conveyor for valuable materials 71 Sorting machine 72 Fixing belts 74 Cleaning device 76 brushes 76a Upper brush 76b Lower brush 78a Upper brush support section 78b Lower structure 80 Suction machine 80a upper suction machine 80b lower suction machine

Claims

1. A pyrolysis furnace for pyrolysis treatment of used solar modules mounted on the recovery equipment, A module recovery conveyor for recovering the thermally decomposed solar cell modules, along with the recovery equipment, in the aforementioned thermal decomposition furnace. A glass recovery conveyor for recovering the plate glass contained in the pyrolysis solar cell module that has been transferred to the module recovery conveyor, A valuable materials recovery unit for recovering valuable materials other than the glass plate contained in the thermally decomposed solar cell module, A solar cell module recycling system characterized by comprising an equipment recovery unit for recovering the recovery equipment remaining on the module recovery conveyor after the plate glass and the valuable materials have been recovered.

2. The solar cell module recycling system according to claim 1, characterized in that the module recovery conveyor rotates while the recovery device remains fixed to the conveyor belt from the time the thermally decomposed solar cell module is recovered together with the recovery device until the recovery device is recovered by the device recovery unit.

3. The solar cell module recycling system according to claim 2, characterized in that the module recovery conveyor is provided with fixing belts fixedly arranged parallel to both ends of the outer periphery other than the upper surface of the module recovery conveyor.

4. The solar cell module recycling system according to any one of claims 1 to 3, characterized in that the valuable materials other than the glass plate include cells and ribbon wires connecting the cells to each other.

5. The solar cell module recycling system according to claim 4, characterized in that the valuable material other than the plate glass further includes granular glass.

6. A pyrolysis process in which used solar modules mounted on a recovery device are pyrolyzed in a pyrolysis furnace. A module recovery process in which the thermally decomposed solar cell modules, which have been thermally decomposed in the thermal decomposition furnace, are transferred to a module recovery conveyor along with the recovery equipment for recovery. A glass recovery process for recovering the plate glass contained in the pyrolysis solar cell module that has been transferred to the module recovery conveyor, A valuable materials recovery process for recovering valuable materials other than glass plates contained in the aforementioned pyrolysis solar cell module, A solar cell module recycling method characterized by including a device recovery step of recovering the recovery device remaining on the module recovery conveyor after the plate glass and the valuable materials have been recovered.

7. The solar cell module recycling method according to claim 6, characterized in that, in the module recovery step, the recovery device rotates while remaining fixed to the conveyor belt.

8. The solar cell module recycling method according to claim 6 or 7, characterized in that the valuable materials other than the glass plate include cells and ribbon wires connecting the cells to each other.

9. The solar cell module recycling method according to claim 8, characterized in that the valuable material other than the plate glass further includes granular glass.

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