Solvent reuse non-heating type separation device for separating backsheet of photovoltaic module

Abstract

The present invention relates to a solvent reuse non-heating type separation device for separating a backsheet of a photovoltaic module, the device comprising: a separation unit for separating and removing a backsheet from a waste photovoltaic module by using a solvent; and a recovery circulation unit which recovers the backsheet and the solvent after use, and which produces a recycled solvent for reusing the solvent, and thus the backsheet can be removed from the waste photovoltaic module in a more eco-friendly and efficient manner.

Description

Non-heating separation device for solvent reuse for solar module backsheet separation

[0001] The present invention relates to a solvent-reusable non-heating separation device for separating backsheets of photovoltaic modules, and more specifically, to a solvent-reusable non-heating separation device for separating backsheets of photovoltaic modules that utilizes a non-heating solvent-reusable backsheet separation technology to efficiently remove backsheets from waste photovoltaic modules and recover and reuse the solvent.

[0002] Solar power generation is an essential renewable energy technology for achieving carbon neutrality, and its adoption is expanding globally.

[0003] In Korea as well, the cumulative capacity of solar power generation facilities reached 21.4GW as of 2022, and is expected to expand to 41GW by 2030 and over 135GW by 2050.

[0004] However, as the expected lifespan of solar modules (about 15 to 30 years) approaches, the amount of solar panels being discarded after use is rapidly increasing, and it is projected that approximately 9,665 tons of waste panels will be generated in 2023, 17,531 tons in 2030, 59,194 tons in 2040, and 115,250 tons in 2050.

[0005] Accordingly, recycling technology for discarded solar panels is emerging as an increasingly important environmental and industrial challenge.

[0006] A solar module is largely composed of tempered glass, silicon solar cells, an aluminum frame, a junction box, and a backsheet.

[0007] Among these, the backsheet is an essential component for protecting solar cell modules and improving efficiency; it primarily consists of a multilayer structure formed by bonding a PVF (Polyvinyl Fluoride) or PVDF (Polyvinylidene Fluoride) film to a PET (Polyethylene Terephthalate) film.

[0008] The backsheet serves to protect the solar cell from the external environment and functions to reflect light that has passed through the solar cell back to the solar cell.

[0009] However, the main materials of these backsheets have high chemical stability, making them difficult to decompose, and there is a possibility that they may release hazardous substances if not properly treated during the recycling process.

[0010] In existing technologies including registered patent No. 10-1936925 (hereinafter referred to as prior art), high-temperature heating or mechanical separation methods have been primarily applied to remove backsheets from waste solar modules.

[0011] For example, prior art provides a device and method for removing a backsheet of a photovoltaic module, and adopts a method of physically removing the backsheet after heating it at a high temperature using an adsorption unit and a transport unit.

[0012] Prior art proposes a method of heating a photovoltaic module to a temperature of 50 to 300°C to weaken the adhesion between the backsheet and the photovoltaic module, and then separating the backsheet using an adsorption pad. However, this method has several problems as follows.

[0013] First is the problem of high energy consumption.

[0014] High-temperature heating methods generally require high temperatures of 500 to 600°C or higher, and this process generates significant power consumption.

[0015] As increasing energy efficiency and reducing recycling costs are important goals in the solar panel recycling process, this high-temperature method faces the problem of low industrial efficiency.

[0016] Second is the problem of harmful gas emissions.

[0017] Backsheets are composed of fluorine-based polymers such as PVF and PVDF, and there is a possibility that harmful gases containing fluorine compounds may be emitted when heat-treated at high temperatures.

[0018] In particular, PVDF (Polyvinylidene Fluoride) is stable at temperatures below 150°C, but if it decomposes at temperatures above 500°C, it can release highly toxic gases.

[0019] Therefore, conventional high-temperature heating methods are environmentally undesirable and can have an adverse effect on worker safety.

[0020] Third, there is the problem of material damage and reduced recovery rates.

[0021] Silicon solar cells, which are one of the core materials of solar modules, are susceptible to deterioration when heated to high temperatures, and in particular, valuable resources such as silver (Ag) and aluminum (Al) are at risk of oxidation or loss at high temperatures.

[0022] Therefore, conventional heat treatment methods have limitations in recovering high-purity materials, and consequently, become a factor that reduces the economic feasibility of the recycling process.

[0023] To address these problems, non-heating or low-temperature backsheet separation technologies are currently being researched.

[0024] A representative method involves dissolving the backsheet using an organic solvent; this method has the advantage of reducing energy consumption and not emitting harmful gases because it does not require high-temperature heating.

[0025] For example, some studies propose a method of dissolving backsheets by combining ultrasonic vibrations and organic solvents, and it has been confirmed that this can increase the separation efficiency of backsheets and prevent damage to solar cells and valuable resources.

[0026] Reflecting these research trends, the present invention aims to overcome the limitations of existing technology by applying a non-heating method for solvent-reusable backsheet removal technology.

[0027]

[0028] [Prior Art Literature]

[0029] [Patent Literature]

[0030] Registered Patent No. 10-1936925

[0031] The present invention was developed to improve upon the aforementioned problems and aims to provide a solvent-reusable, non-heating separation device for separating solar module backsheets that can remove the backsheets of waste solar modules in a more environmentally friendly and efficient manner.

[0032] To achieve the above objective, the present invention may provide a non-heating separation device for solvent reuse for separating solar module backsheets, characterized by comprising: a separation unit for separating and removing backsheets from waste solar modules using a solvent; and a recovery circulation unit for recovering the backsheets and solvent after use and producing a regenerated solvent for reusing the solvent.

[0033] Herein, the separation unit is characterized by comprising: a reaction tank in which the waste solar module and the solvent are received; an ultrasonic oscillator installed in the reaction tank to apply ultrasonic vibrations to the waste solar module contained in the solvent; an auxiliary tank in which the solvent to be replenished to the reaction tank is temporarily received; and a lifting means installed on one side of the reaction tank to automatically raise and lower the waste solar module over the inside and outside of the reaction tank in order to separate the back sheet from the waste solar module.

[0034] At this time, the recovery circulation unit is characterized by comprising: a solvent condensation tank connected to the auxiliary tank of the separation unit and for converting the vaporized solvent back into a liquid state after separating the backsheet from the waste solar module; a heat transfer tank connected to the solvent condensation tank and containing a heat transfer fluid to prevent explosion of the solvent; a heat transfer heater installed in at least one of the heat transfer tanks to heat the heat transfer fluid within a certain temperature range; and a heat transfer pump mounted on a heat transfer piping connecting the heat transfer tank and the solvent condensation tank to circulate the heat transfer fluid.

[0035] In addition, the recovery circulation unit further comprises: a heat exchanger connected to the solvent condensation tank and the heat transfer pipe, which maintains an internal space in a vacuum state to promote the heating of the solvent; a liquid level control tank connected to the solvent condensation tank, which prevents the solvent condensed and liquefied in the solvent condensation tank from flowing back into the reaction tank of the separation unit and maintains a constant liquid level; and a regenerated solvent storage tank connected to the liquid level control tank and the auxiliary tank of the separation unit, which temporarily stores the regenerated solvent obtained by vaporizing the solvent used in the process of separating the backsheet from the waste solar module and then compressing and liquefying it again.

[0036] In addition, the recovery circulation unit further comprises a filter tank with a built-in filter that filters foreign substances from the solvent used in the process of separating the backsheet from the waste solar module, which is mounted on the piping interconnecting the auxiliary tank and the heat exchanger.

[0037] In addition, the recovery circulation unit further comprises a solvent circulation pump that generates a driving force to circulate the regenerated solvent contained in the regenerated solvent storage tank so that the regenerated solvent is returned through a regenerated solvent return pipe connecting the auxiliary tank and the regenerated solvent storage tank.

[0038] In addition, the recovery circulation unit is characterized by further including a coil-shaped cooling pipe embedded in the regeneration solvent storage tank through which cooling water supplied from a cooling water source flows.

[0039] In addition, it is characterized by further including a base housing composed of a plurality of frames that accommodate and support the separation unit and the recovery circulation unit, and a control operating unit provided on one side of the base housing for operating the separation unit and the recovery circulation unit.

[0040] According to the present invention with the above-described configuration, the following effects can be achieved.

[0041] First, the present invention has the advantage of being able to perform an environmentally friendly process, and specifically, prevents the emission of harmful gases, such as fluorine compounds, resulting from the decomposition of PVDF, etc., generated in high-temperature heating methods.

[0042] Therefore, the present invention has the advantage of reducing energy consumption by applying a low temperature or non-heating method.

[0043] In addition, the present invention has the advantage of being able to remove backsheets with high efficiency through a backsheet separation process utilizing ultrasonic vibration and a solvent.

[0044] In particular, the present invention enables an improved recovery rate of silicon wafers and valuable resources such as silver, copper, and aluminum after backsheet removal.

[0045] In addition, the present invention has the advantage of enabling economical and eco-friendly recycling by recovering and purifying the solvent used in the backsheet separation process for reuse.

[0046] In addition, the present invention has the advantage of minimizing solvent loss and enabling continuous reuse through a solvent condensation tank and a regenerated solvent storage tank.

[0047] Above all, the present invention has the distinct advantage of ensuring worker safety and increasing the speed of back sheet separation and removal by applying an automated process instead of the conventional manual method.

[0048] In other words, the present invention enables the maximization of efficiency in processing waste solar modules by applying a lifting system and an automatic solvent recovery system.

[0049] FIG. 1 is a front conceptual diagram illustrating the overall structure of a solvent-reusable non-heating separation device for separating a photovoltaic module backsheet according to an embodiment of the present invention.

[0050] FIG. 2 is a planar conceptual diagram showing the overall structure of a solvent-reusable non-heating separation device for separating a photovoltaic module backsheet according to an embodiment of the present invention, viewed from point A in FIG. 1.

[0051] FIG. 3 is a side conceptual diagram showing the overall structure of a solvent-reusable non-heating separation device for separating a photovoltaic module backsheet according to an embodiment of the present invention, viewed from point B of FIG. 1.

[0052] FIG. 4 illustrates the structure of a lifting means among the separation parts, which are the main parts of a solvent-reusable non-heating separation device for separating a photovoltaic module backsheet according to an embodiment of the present invention, where FIG. 4(a) is a front conceptual view and FIG. 4(b) is a side conceptual view viewed from point C in FIG. 4(a).

[0053] FIG. 5 is a conceptual diagram illustrating the overall structure of a recovery circulation unit, which is a key part of a solvent reuse non-heating separation device for separating photovoltaic module backsheets according to an embodiment of the present invention.

[0054] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described in detail below together with the accompanying drawings.

[0055] However, the present invention is not limited to the embodiments disclosed below but will be implemented in various different forms.

[0056] The embodiments described in this specification are provided to ensure that the disclosure of the invention is complete and to fully inform those skilled in the art of the scope of the invention.

[0057] And the present invention is defined only by the scope of the claims.

[0058] Accordingly, in some embodiments, well-known components, well-known operations, and well-known techniques are not specifically described to avoid the invention being interpreted ambiguously.

[0059] Additionally, throughout the specification, the same reference numerals refer to the same components, and the terms used (mentioned) in this specification are for describing embodiments and are not intended to limit the invention.

[0060] In this specification, the singular form includes the plural form unless specifically stated otherwise in the text, and components and operations referred to as 'comprising (or comprising)' do not exclude the presence or addition of one or more other components and operations.

[0061] Unless otherwise defined, all terms used in this specification (including technical and scientific terms) may be used in a meaning that is commonly understood by those skilled in the art to which the present invention belongs.

[0062] Also, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless otherwise defined.

[0063] Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings.

[0064]

[0065] For reference, FIG. 1 is a front conceptual diagram illustrating the overall structure of a solvent-reusable non-heating separation device for separating a photovoltaic module backsheet according to one embodiment of the present invention.

[0066] And, FIG. 2 is a planar conceptual diagram showing the overall structure of a solvent-reusable non-heating separation device for separating a photovoltaic module backsheet according to one embodiment of the present invention, viewed from point A of FIG. 1.

[0067] And, FIG. 3 is a side conceptual diagram showing the overall structure of a solvent-reusable non-heating separation device for separating a photovoltaic module backsheet according to one embodiment of the present invention, viewed from point B of FIG. 1.

[0068] In addition, FIG. 4 illustrates the structure of a lifting means (130) in a separation unit (10), which is a main part of a solvent-reusable non-heating separation device for separating a solar module backsheet according to one embodiment of the present invention, FIG. 4(a) is a front view conceptual diagram, and FIG. 4(b) is a side view conceptual diagram viewed from point C of FIG. 4(a).

[0069] In addition, FIG. 5 is a conceptual diagram illustrating the overall structure of a recovery circulation unit (20), which is a main part of a solvent reuse non-heating separation device for separating a solar module backsheet according to one embodiment of the present invention.

[0070]

[0071] The present invention may apply an embodiment of a structure comprising a separation unit (10) that separates and removes a backsheet (hereinafter not shown) from a waste solar module (hereinafter not shown) using a solvent as shown in FIGS. 1 to 3, and a recovery circulation unit (20) that recovers the backsheet and solvent after use and produces a regenerated solvent for reusing the solvent.

[0072] The present invention is applicable to the above-described embodiments, and it goes without saying that it is also applicable to various embodiments as follows.

[0073]

[0074] First, the separation unit (10) may include a reaction tank (110) in which waste solar modules and a solvent are contained, an ultrasonic oscillator (112) installed in the reaction tank (110) to apply ultrasonic vibrations to waste solar modules contained in the solvent, an auxiliary tank (120) in which solvent to be replenished to the reaction tank (110) is temporarily contained, and a lifting means (130) installed on one side of the reaction tank (110).

[0075] The lifting means (130) is provided to perform the function of automatically lifting the waste solar module over the inside and outside of the reaction tank (110) in order to separate the back sheet from the waste solar module.

[0076] It is preferable that a round heater (111) for maintaining a constant temperature of the solvent be further provided inside the reaction tank (110).

[0077]

[0078] Meanwhile, the lifting means (130) may include a base frame (131) that supports the reaction tank (110) as shown in FIG. 4, and a lifting support frame (1311) formed on one side of the base frame (131) and extending upward from the upper surface of the reaction tank (110).

[0079] And, the lifting means (130) may include a lifting cylinder (132) installed on a lifting support frame (1311) and a lifting rod (1321) that can move in and out of the lifting cylinder (132).

[0080] Additionally, the lifting means (130) may include a lifting frame (133) connected to the end of the lifting rod (1321) and moving up and down along the front of the lifting support frame (1311) in conjunction with the movement of the lifting rod (1321).

[0081] Additionally, the lifting means (130) may include at least one support rod (134) extending toward the reaction tank (110) side on the lifting frame (133).

[0082] In addition, the lifting means (130) may include a lifting frame (135) connected to the lower side of the support rod (134) and parallel to the upper or lower surface of the reaction tank (110) and providing an area on which the waste solar module is supported.

[0083] The lifting means (130) may be provided by adopting an automatic lifting method to prevent or minimize contact between the human body and the solvent inside the reaction tank (110).

[0084] When the ultrasonic oscillator (112) is operated, a rise in the solvent temperature inside the reaction tank (110) is predicted due to vibration, and accordingly, it is desirable to apply a high-performance sealing structure to the upper side of the reaction tank (110) and the pipe connection part to prevent vaporized steam from being discharged to the outside.

[0085] In addition, by designing the lifting frame (135) so that it cannot move beyond a certain range, it is possible to prevent the occurrence of a malfunction or accident of the lifting means (130).

[0086] In addition, the lifting cylinder (132) and lifting rod (1321) structure facilitates solvent penetration by uniformly transmitting vibrations from the ultrasonic oscillator (112) to the back sheet while performing piston movement during operation.

[0087]

[0088] Meanwhile, the recovery circulation unit (20), when examined in detail with reference to FIG. 5 together with FIG. 1 to 3, may include a solvent condensation tank (210) connected to the auxiliary tank (120) of the separation unit (10) for converting the vaporized solvent back into a liquid state after separating the backsheet from the waste solar module, and a heat transfer tank (220) connected to the solvent condensation tank (210) for containing a heat transfer fluid to prevent explosion of the solvent.

[0089] Additionally, the recovery circulation unit (20) may include a heat transfer heater (221) installed in at least one heat transfer tank (220) to heat the heat transfer fluid within a certain temperature range, and a heat transfer pump (222) mounted on a heat transfer pipe (230) connecting the heat transfer tank (220) and the solvent condensation tank (210) to circulate the heat transfer fluid.

[0090] Here, the solvent condensation tank (210) is intended to convert the heated and vaporized solvent back into a liquid state and can be designed and manufactured in the form of a vacuum pressure tank.

[0091] In particular, the solvent condensation tank (210) can be made of stainless steel or a stainless steel alloy, which is a material that does not deform even in a vacuum and has excellent durability.

[0092] The solvent condensation tank (210) may adopt a high-performance sealing structure to maintain a vacuum state and block the inflow of air from the outside.

[0093]

[0094] The heat transfer tank (220) adopts a method of circulating the heat transfer fluid to prevent explosion due to overheating of the solvent and heating it indirectly through the heat transfer heater (221), and at the same time, allows the heat transfer fluid heated by the heat transfer pump (222) to circulate.

[0095] Typically, at the work site, approximately 30 liters of heat transfer fluid are used, so even if the temperature difference of the heated heat transfer fluid increases, the temperature variability of the circulating heat transfer fluid can be reduced because it relies on an indirect heating method through a heat transfer heater (221).

[0096] Therefore, the heat transfer fluid is repeatedly heated by the heat transfer heater (221) and cooled naturally by circulation, and maintenance is possible by simply replenishing the insufficient heat transfer fluid about once a year as long as there is no leakage.

[0097]

[0098] Meanwhile, the heat transfer pipe (230) may include a first discharge pipe (231) connected to a heat transfer pump (222) and connected to a first port (2201) formed on one side of the heat transfer tank (220), and a second discharge pipe (232) connected to the heat transfer pump (222) and a solvent condensation tank (210).

[0099] Additionally, the heat transfer pipe (230) may include a condensation induction pipe (233) connected to the second discharge pipe (232) to form a coiled flow path inside the solvent condensation tank (210), and a return pipe (234) connected to the condensation induction pipe (233) and connected to a second port (2202) formed on one side of the solvent condensation tank (210) and the heat transfer tank (220).

[0100]

[0101] Meanwhile, the recovery circulation unit (20) may further include a heat exchanger (240) that is connected to the solvent condensation tank (210) and the heat transfer pipe (230) and maintains the internal space in a vacuum state to promote heating of the solvent.

[0102] Additionally, the recovery circulation unit (20) may further include a liquid level control tank (250) connected to the solvent condensation tank (210) to prevent the solvent condensed and liquefied in the solvent condensation tank (210) from flowing back into the reaction tank (110) of the separation unit (10) and to maintain a constant liquid level.

[0103] Additionally, the recovery circulation unit (20) may further include a regenerated solvent storage tank (260) connected to the liquid level control tank (250) and the auxiliary tank (120) of the separation unit (10), in which the regenerated solvent, which is vaporized and then compressed and liquefied again after being used in the process of separating backsheets from waste solar modules, is temporarily stored.

[0104]

[0105] A coil-shaped circulation pipe structure for increasing the surface area can be built into the heat exchanger (240) so that the heat medium fluid circulates inside the heat exchanger (240), and the heat exchanger (240) can be designed to lower the heating load of the solvent passing through it.

[0106] The heating tank (241) connected to the heat exchanger (240) maintains the interior in a vacuum state, thereby causing vaporization to occur at a temperature lower than the boiling point under normal pressure conditions, which can reduce the energy consumption used during heating.

[0107]

[0108] The liquid level control tank (250) is connected to the solvent condensation tank (210) and is provided to prevent the condensed liquid solvent from flowing back into the reaction tank (110), and can perform the function of controlling the liquid level so that it does not overflow above a certain level.

[0109] This liquid level control tank (250) can adopt a high-performance sealing structure similar to that of the solvent condensation tank (210) in order to maintain high pressure and prevent air from entering from the outside.

[0110] When the liquid level control tank (250) reaches a level above the set range, it can prevent the risk of an accident by activating an emergency light or buzzer equipped in the control operating unit (500) described later.

[0111]

[0112] The regenerated solvent storage tank (260) is provided to provide a space for storing the regenerated solvent, which is compressed and liquefied again after the used solvent has been vaporized, and can be designed to maintain a constant temperature with cooling water to minimize losses due to backflow and evaporation.

[0113] The regeneration solvent storage tank (260) may further be provided with a liquid level tube (262) that is exposed to the outside so that the amount of regeneration solvent contained therein can be visually checked and communicates with the internal space of the regeneration solvent storage tank (260).

[0114]

[0115] Meanwhile, the recovery circulation unit (20) may further include a filter tank (270) with a built-in filter that filters foreign substances from the solvent used in the process of separating backsheets from waste solar modules, which is mounted on a pipe connecting the auxiliary tank (120) and the heat exchanger (240).

[0116] Additionally, the recovery circulation unit (20) may further include a solvent circulation pump (272) that generates a driving force to circulate the regenerated solvent contained in the regenerated solvent storage tank (260) so that the regenerated solvent is returned through a regenerated solvent return pipe (271) that interconnects the auxiliary tank (120) and the regenerated solvent storage tank (260).

[0117] Additionally, the recovery circulation unit (20) may further include a coil-shaped cooling pipe (261) through which cooling water supplied from a cooling water supply source flows, which is built into a regenerated solvent storage tank (260).

[0118] In the regeneration solvent storage tank (260), a cooling pipe (261) through which cooling water flows is embedded in a coil type so that a constant temperature can be maintained with the aforementioned cooling water, thereby increasing the cooling effect due to the increase in surface area.

[0119]

[0120] Meanwhile, the solvent-reusable non-heating separation device for separating a solar module backsheet according to the present invention may further include a base housing (300) composed of a plurality of frames that accommodate and support a separation unit (10) and a recovery circulation unit (20), and a control operating unit (500) provided on one side of the base housing (300) for operating the separation unit (10) and the recovery circulation unit (20).

[0121] Of course, the control unit (500) can be designed with an on / off driving method for each control unit to operate the ultrasonic oscillator (112) and the lifting cylinder (132), circulate the heat transfer fluid and control the temperature, and produce the used solvent as a regenerated solvent.

[0122] That is, the structure of each component of the recovery circulation unit (20) may additionally have sensors (not shown below) attached to each component and monitor in real time for the purpose of preventing various risk factors such as backflow, explosion, or leakage of the solvent or heat transfer fluid during the process of regenerating the solvent used to separate and remove the backsheet from the waste solar module and producing it as a regenerated solvent.

[0123]

[0124] As described above, it can be seen that the basic technical concept of the present invention is to provide a solvent-reusable, non-heating separation device for separating solar module backsheets that can remove the backsheets of waste solar modules more environmentally friendly and efficiently.

[0125] And, it goes without saying that many other variations and applications are also possible for those skilled in the art within the scope of the basic technical concept of the present invention.

Claims

1. A separation unit for separating and removing backsheets from waste solar modules using a solvent; and A non-heating separation device for solvent reuse for separating photovoltaic module backsheets, characterized by including a recovery circulation unit that recovers the backsheet and solvent after use and produces a regenerated solvent for reusing the solvent.

2. In Claim 1, The above separation part is, A reaction tank containing the above-mentioned waste solar modules and the above-mentioned solvent, and An ultrasonic oscillator installed in the above reaction tank to apply ultrasonic vibrations to the above waste solar module contained in the above solvent, and An auxiliary tank for temporarily accommodating the solvent to be replenished to the reaction tank, and A solvent-reusable non-heating separation device for separating solar module backsheets, characterized by including a lifting means installed on one side of the reaction tank to automatically raise and lower the waste solar module over the inside and outside of the reaction tank in order to separate the backsheet from the waste solar module.

3. In Claim 1, The above recovery circulation unit is, A solvent condensation tank connected to the auxiliary tank of the above separation unit and for converting the vaporized solvent back into a liquid state after separating the backsheet from the above waste solar module, and A heat transfer tank connected to the above-mentioned solvent condensation tank and containing a heat transfer fluid for preventing explosion of the above-mentioned solvent, and A heat transfer heater installed in at least one of the above heat transfer tanks to heat the heat transfer fluid within a certain temperature range, and A non-heating solvent reuse separation device for separating photovoltaic module backsheets, characterized by including a heat pump mounted on a heat transfer pipe connecting the heat transfer tank and the solvent condensation tank to circulate the heat transfer fluid.

4. In Claim 3, The above recovery circulation unit is, A heat exchanger connected to the solvent condensation tank and the heat transfer piping, which maintains the internal space in a vacuum state to promote the heating of the solvent, and A liquid level control tank connected to the solvent condensation tank, which prevents the solvent condensed and liquefied in the solvent condensation tank from flowing back into the reaction tank of the separation unit and maintains a constant liquid level, and A non-heating separation device for reusing solvent for separating backsheets of photovoltaic modules, characterized by further including a regenerated solvent storage tank connected to the above liquid level control tank and the above separation unit, wherein the regenerated solvent, which is vaporized and then compressed and liquefied again after being used in the process of separating the backsheet from the above waste photovoltaic modules, is temporarily stored.

5. In Claim 4, The above recovery circulation unit is, A non-heating separation device for reusing solvent for separating backsheets of photovoltaic modules, characterized by further including a filter tank with a built-in filter for filtering foreign substances from the solvent used in the process of separating backsheets from the waste photovoltaic modules, which is mounted on a pipe interconnecting the auxiliary tank and the heat exchanger.

6. In Claim 4, The above recovery circulation unit is, A non-heating solvent reuse separation device for separating photovoltaic module backsheets, characterized by further including a solvent circulation pump that generates a driving force to circulate the regenerated solvent contained in the regenerated solvent storage tank so that the regenerated solvent is returned through a regenerated solvent return pipe connecting the auxiliary tank and the regenerated solvent storage tank.

7. In Claim 4, The above recovery circulation unit is, A non-heating solvent reuse separation device for separating photovoltaic module backsheets, characterized by further including a coil-shaped cooling pipe embedded in the above-mentioned regenerated solvent storage tank through which cooling water supplied from a cooling water source flows.

8. In Claim 1, A base housing comprising a plurality of frames that accommodate and support the separation unit and the recovery circulation unit, and A non-heating solvent-reusable separation device for separating solar module backsheets, characterized by further including a control operating unit provided on one side of the base housing for operating the separation unit and the recovery circulation unit.

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