KR102818850B1 - Laser apparatus for silver nanoparticle recovery of waste photovoltaic module - Google Patents

Abstract

The present invention relates to a laser device for extracting silver nanoparticles from waste solar modules, comprising: a support including an installation portion equipped with an installation block; a pulse laser having a light-emitting portion installed on one side of the upper surface of the installation block and radiating a laser beam in one direction; a path management portion including a plurality of lenses installed on one side of the upper surface of the installation block and allowing the laser beam to accurately reach a destination by minimizing optical distortion and energy loss from the light-emitting portion; and a light-receiving portion disposed on one side of the upper surface of the installation block and into which a laser beam is injected from the light-emitting portion through the path management portion, and characterized by including a precipitate container having a space for receiving a precipitate to be subjected to photoreduction by heat-treating and dismantling a waste solar module and subjecting it to acid and alkali leaching, thereby enabling silver, among the precious metals contained in the waste solar module, to be extracted as a nanoparticle material when recycling the waste solar module.

Description

{LASER APPARATUS FOR SILVER NANOPARTICLE RECOVERY OF WASTE PHOTOVOLTAIC MODULE}

The present invention relates to a laser device for extracting silver nanoparticles from solar waste modules, and more specifically, to a laser device for extracting silver nanoparticles from solar waste modules, which enables extraction of silver among the valuable metals contained in solar waste modules as nanoparticle materials when recycling the solar waste modules.

As carbon neutrality, which involves reducing the sum of greenhouse gas emissions and reductions to zero, emerges as a key task for the international community and the proportion of renewable energy increases, it is urgent to establish safe disposal and recycling plans for waste resources such as discarded solar panels.

In particular, as the installed capacity of solar power generation increases, the problem of processing waste solar panels is becoming a serious issue.

In Europe, the 2014 Waste Electrical & Electronic Equipment (WEEE) Directive included waste solar panels and imposes obligations on member states to collect, reuse, and recycle them.

That is, compared to the total amount of waste solar panels generated, the recovery rate target is set at 85% for large equipment and 75% for small equipment, and it is stipulated that 80% and 55% or more, respectively, be reused or recycled.

In addition, France added a clause to its 2014 environmental legislation requiring that at least 85% of waste panels be recovered and at least 80% recycled, similar to WEEE.

France reorganized PV Cycles France, the manufacturers' association that was in charge of processing waste solar panels before the revision of the WEEE Directive, into Soren and granted it exclusive rights to manage waste solar panels in France.

There are currently three solar module recycling facilities in operation in France, and work is underway to build three more in response to projected increases in waste generation.

Meanwhile, in the United States, each state operates its own solar waste management system.

That is, California, the state with the highest solar power penetration rate in the U.S., introduced the ‘California Solar Module Collection and Recycling Act’ in 2015 to include solar modules in the hazardous waste regulations.

Washington state also operates a solar module management and take-back program, and most states operate regional collection centers for discarded solar panels.

Meanwhile, in Japan, there are no laws stipulating the obligation and method of disposal of waste solar panels, but in 2013, the Japanese Ministry of the Environment prepared guidelines for reusing waste solar panels.

The Japanese government has proposed disposal methods such as demolition, transportation, and recycling by establishing the 'Strategy Roadmap for Collection, Recycling, and Proper Treatment' in 2015 and the 'Guidelines for Recycling Waste Solar Panels' in 2016.

Additionally, from July 2022, Japan's subsidy system will require power plant owners to cover the costs of disposing of discarded solar panels in advance.

Meanwhile, since the lifespan of solar panels is usually 25 to 30 years, there is still a considerable amount of time left in the lifespan of solar panels, and most solar panels that are discarded due to damage or aging are being disposed of as waste.

Currently, recovering glass, aluminum, copper, silicon, silver and lead from discarded solar panels is unprofitable, but experts predict that this will change in the future given the rapid adoption of solar power.

In the case of Korea, various recycling technologies including registered patent No. 10-2258669 are being developed, but at present, there is a lack of companies specializing in commercialization, and the market is not active, so recycling is not more profitable than disposing of waste.

In comparison, the International Renewable Energy Agency (IRENA) estimates that the value of materials recovered from solar panels will reach $450 million and $15 billion by 2030 and 2050, respectively.

Therefore, if the amount of waste solar panels, which is expected to increase rapidly and continuously in the future, remains unprocessed, it will be difficult to recycle idle land from aging power plants, and there is a possibility of problems such as the inflow of hazardous substances such as copper and lead into the soil and ocean due to the landfilling of waste solar panels.

In addition, the existing developed solar panel recycling process requires a crushing process and high-temperature heat treatment.

In particular, the extraction and recovery method of valuable resources utilizes chemical treatment, and when extracting valuable resources, methods using nitric acid, sulfuric acid, hydrofluoric acid, etc. are mainly applied, so environmental problems such as water pollution are expected to occur during process operation.

Here, silver extracted in a conventional manner can be sold for less than about 1,000 won per gram at the current market price, but if it is extracted in the form of silver nanoparticles using new technology, the price may vary somewhat depending on the particle size, but silver with a size of around 100 nm can be expected to generate an economic effect of more than four times, at about 4,000 won per gram.

Therefore, in order to recycle waste solar panels, it is urgent to develop low-energy, eco-friendly separation and recovery technologies and technologies that can improve the quality of recovered resources.

Registered Patent No. 10-2258669

The present invention has been made to improve the above problems, and provides a laser device for extracting silver nanoparticles from waste solar modules, which can extract silver among the valuable metals contained in waste solar modules as nanoparticle materials when recycling waste solar modules.

In order to achieve the above object, the present invention provides a laser device for extracting silver nanoparticles from waste solar modules, characterized by including: a support including an installation portion having an installation block; a pulse laser having a light-emitting portion installed on one side of the upper surface of the installation block and radiating a laser beam in one direction; a path management portion including a plurality of lenses installed on one side of the upper surface of the installation block to allow the laser beam to accurately reach a destination by minimizing optical distortion and energy loss from the light-emitting portion; and a light-receiving portion disposed on one side of the upper surface of the installation block and into which the laser beam is injected from the light-emitting portion through the path management portion, and including a precipitate container having a space for receiving a precipitate to be photoreduced by heat treatment and dismantling from a waste solar module and acid and alkali leaching.

Here, the support member further includes a table having an upper surface on which the installation block is installed, and the table is characterized in that it is installed to be movable and fixed with respect to the installation target surface.

At this time, the pulse laser is characterized as being a neodymium doped yttrium aluminum garnet (Nd:YAG) laser.

And, it is characterized by further including a first beam diffuser that is electrically connected to the pulse laser and diffuses and disperses the laser beam generated from the light-emitting unit to a certain degree to control the intensity of the laser beam and transmit it stably by the path management unit, and a second beam diffuser that is electrically connected to the pulse laser and disperses the beam diffused by the first beam diffuser again to expand the irradiation range of the laser beam or lower the energy density at a specific point so that it is irradiated uniformly over a wider area.

And, the path management unit is characterized in that it further includes a first lens that constitutes the plurality of lenses, is installed on the installation block in a way that the angle can be adjusted, and adjusts the path so that the laser beam irradiated from the light emitting unit is bent and irradiated at a specific angle; a second lens that constitutes the plurality of lenses, is installed on the installation block in a way that the angle can be adjusted, and adjusts the path so that the laser beam irradiated through the first lens is bent and irradiated at a specific angle; and a third lens that constitutes the plurality of lenses, is installed on the installation block in a way that the angle can be adjusted, and adjusts the path so that the laser beam irradiated through the second lens is bent and irradiated at a specific angle and directed toward the light receiving unit.

And, the path management unit is characterized by further including a first lens frame having an inner surface contacting an edge of the first lens and arranged on an upper side of the installation block, a second lens frame having an inner surface contacting an edge of the second lens and arranged on an upper side of the installation block, and a third lens frame having an inner surface contacting an edge of the third lens and arranged on an upper side of the installation block.

And, the path management unit is characterized in that it further includes a first lens support rod extending from an outer surface of the first lens frame toward an upper surface of the installation block, a first lens installation piece extending along an outer surface of a lower portion of the first lens support rod, a second lens support rod extending from an outer surface of the second lens frame toward an upper surface of the installation block, a second lens installation piece extending along an outer surface of a lower portion of the second lens support rod, a third lens support rod extending from an outer surface of the third lens frame toward an upper surface of the installation block, and a third lens installation piece extending along an outer surface of a lower portion of the third lens support rod.

And, the path management unit further includes a first angle adjustment actuator that is detachably coupled to a specific position among the installation holes formed in a plurality of rows and columns on the upper surface of the installation block to support and support the first lens installation piece, a second angle adjustment actuator that is detachably coupled to a specific position among the installation holes to support and support the second lens installation piece, and a third angle adjustment actuator that is detachably coupled to a specific position among the installation holes to support and support the third lens installation piece, and the first angle adjustment actuator, the second angle adjustment actuator, and the third angle adjustment actuator are characterized in that they are operated separately or simultaneously.

In addition, it further includes a sedimentation solution inlet port provided on one side of the sedimentation solution container and communicating with the interior of the sedimentation solution container, a sedimentation solution outlet port provided on one side of the sedimentation solution container and positioned at a lower position than the inlet port and communicating with the interior of the sedimentation solution container, a sedimentation solution supply tank arranged on the lower side of the installation block and connected to the sedimentation solution inlet port, and a sedimentation solution return tank arranged on the lower side of the installation block and connected to the sedimentation solution outlet port, wherein the sedimentation solution to be photoreduced undergoes a photoreduction reaction in the sedimentation solution container from the sedimentation solution supply tank and circulates through the sedimentation solution return tank, thereby causing precipitation and accumulation of silver nanoparticles from the sedimentation solution to be photoreduced.

In addition, it is characterized by further including a main controller provided on one side of the installation block to control and monitor in real time the operation of the pulse laser, the path management unit, and the sedimentation liquid container.

According to the present invention having the above configuration, the following effects can be achieved.

First, the present invention has a special advantage in that it can reduce and recover high-purity silver nanoparticles from a leachate containing valuable materials separated from solar cell waste modules.

In addition, the present invention has a special advantage in that it can recover valuable metals such as silver in the form of high-purity particles by a photoreduction method that irradiates a pulsed laser to a precipitate from which valuable materials have been extracted.

In particular, the present invention has a special advantage in that it can recover a large amount of silver nanoparticles, which are precious metals, by providing electrons to the precipitate and activation energy according to the wavelength of the laser beam, taking into account the absorption range of silver ions through acid leaching.

Above all, the present invention has the special advantage of ensuring innovation in the process for recovering valuable metals, since the steps of dissolution extraction, silver chloride precipitation, alkaline leaching, reduction, casting, and electrolytic precipitation can be omitted compared to the existing process, which requires a very cumbersome and numerous steps, including heat treatment and dismantling, acid leaching, dissolution extraction, silver chloride precipitation to obtain silver chloride, and then alkaline leaching, reduction, casting, and electrolytic precipitation to obtain silver.

In addition, the present invention has a special advantage of ensuring operational convenience of the entire device when applying a system in which the precipitate automatically circulates.

Figure 1 is a perspective conceptual diagram illustrating the overall structure of a laser device for extracting silver nanoparticles from a solar cell module according to one embodiment of the present invention.
FIG. 2 is a perspective conceptual diagram showing the overall structure of a laser device for extracting silver nanoparticles from a solar cell module according to one embodiment of the present invention, viewed from a different perspective than FIG. 1.

The advantages and features of the present invention and the methods for achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings.

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

The embodiments herein are provided so that this disclosure will be complete and will fully convey the scope of the invention to those skilled in the art.

And the present invention is defined solely by the scope of the claims.

Accordingly, in some embodiments, well-known components, well-known operations, and well-known techniques are not specifically described to avoid obscuring the present invention.

Additionally, throughout the specification, like reference numerals refer to like elements, and the terminology used (or referred to) in this specification is for the purpose of describing embodiments and is not intended to limit the present invention.

In this specification, the singular includes the plural unless the context specifically dictates otherwise, and the mention of components and actions as “including (or comprising)” does not exclude the presence or addition of one or more other components and actions.

Unless otherwise defined, all terms (including technical and scientific terms) used herein can be used in a commonly understood meaning to a person of ordinary skill in the art to which the present invention belongs.

Also, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless they are defined otherwise.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the attached drawings.

First, FIG. 1 is a perspective conceptual diagram illustrating the overall structure of a laser device for extracting silver nanoparticles from a solar cell waste module according to one embodiment of the present invention.

In addition, FIG. 2 is a perspective conceptual diagram showing the overall structure of a laser device for extracting silver nanoparticles from a solar cell waste module according to one embodiment of the present invention, viewed from a different viewpoint than FIG. 1.

The present invention can be applied to an embodiment of a structure in which a pulse laser (200), a path management unit, and a sedimentation liquid container (300) are installed on a support unit (100) including an installation unit (140) equipped with an installation block (141) as shown in FIGS. 1 and 2.

Here, a pulse laser (200) is installed on one side of the upper surface of the installation block (141) and is provided with a light emitting unit (210) that radiates a laser beam (201) in one direction.

At this time, the path management unit may include a plurality of lenses (241, 242, 243) installed on one side of the upper surface of the installation block (141) to ensure that the laser beam (201) accurately reaches the destination point by minimizing optical distortion and energy loss from the light emitting unit (210).

In addition, the precipitation liquid container (300) is placed on one side of the upper surface of the installation block (141), and has a light-receiving portion (310) into which a laser beam (201) is injected from a light-emitting portion (210) through a path management portion, and has a space for receiving a precipitation liquid to be subjected to photoreduction by heat-treating and dismantling a solar waste module (not shown below) and then acid and alkali leaching.

The present invention can be applied to the above-described embodiments, and of course, the following various embodiments can also be applied.

First, the support member (100) may further include a table (110) having an upper surface on which an installation block (141) is installed, and the table (110) may be installed to be movable and fixed with respect to the installation target surface (700).

Here, the table (110) may include an upper frame (111) that supports an installation block (141) and a support leg (112) that extends toward the installation target surface (700) along the edge of the upper frame (111).

At this time, the support member (100) may further include a lower panel (120) that interconnects the lower side surfaces of each of the plurality of support legs (112) and has an upper surface parallel to the lower surface of the installation block (141).

In addition, the support member (100) may further include a wheel assembly (130) including a movable wheel (131) provided at the lower end of each of the plurality of support legs (112) and capable of making cloud contact on the installation target surface (700), and a wheel support bracket (132) formed at the lower end of each of the plurality of support legs (112) and rotatably supporting the movable wheel (131).

In addition, the wheel assembly (130) may further include a brake device that is rotatably connected to the wheel support bracket (132), although not specifically shown, to selectively allow or stop rolling contact of the moving wheel (131).

Meanwhile, the pulse laser (200) may adopt a neodymium doped yttrium aluminum garnet (Nd:YAG) laser.

Here, the Nd:YAG laser is classified as a solid-state laser because the laser medium is a solid, i.e., Nd:YAG.

At this time, the Nd:YAG laser is a pulsed laser because its output is mainly radiated in the form of pulses, and it is efficient enough to cut or weld thick iron plates, and can obtain a strong output, so it can be used in various fields such as industrial lasers, performances such as laser shows, laser treatment, and laser weapons as a solid-state laser.

Meanwhile, the laser device according to the present invention may further include first and second beam diffusers (231, 232).

The first beam diffuser (231) is electrically connected to the pulse laser (200) to diffuse and disperse the laser beam (201) generated from the light emitting unit (210) to a certain degree to control the intensity of the laser beam (201) and ensure that it is stably transmitted by the path management unit.

The second beam diffuser (232) is electrically connected to the pulse laser (200) and re-disperses the beam diffused from the first beam diffuser (231) to expand the irradiation range of the laser beam (201) or to uniformly irradiate a wider area while lowering the energy density at a specific point.

Here, a first ground (211) is provided on one side of the pulse laser (200), and a first fixed cable (2111) electrically connected to the pulse laser (200) from the first ground (211) may be further provided.

At this time, a first coupling (2112) is provided at the end of the first fixed cable (2111), and a second ground (212) provided separately from the first ground (211) on one side of the pulse laser (200) may be further provided.

In addition, a second fixed cable (2121) electrically connected to the pulse laser (200) from the second ground (212) may be further provided, and a second coupling (2122) may be further provided at the end of the second fixed cable (2121).

And, a first extension cable (223) extends from one side of the first beam diffuser (231), and a third coupling (221) is provided at the end of the first extension cable (223) so as to be detachably coupled with the first coupling (2112).

And, a second extension cable (224) extends from one side of the second beam diffuser (232), and a fourth coupling (222) is provided at the end of the second extension cable (224) so as to be detachably coupled with the second coupling (2122).

In addition, a first display window (233) may be provided on one side of the first beam diffuser (231), a second display window (234) may be provided on one side of the second beam diffuser (232), and a plurality of adjustment dials (235) may be further provided on one side of the second beam diffuser (232).

Here, the first beam diffuser (231) is provided to diffuse the laser beam (201) irradiated from the pulse laser (200) at a specific angle so that it can uniformly reach the target area, i.e., the inside of the precipitation liquid container (300) through the light receiving portion (310).

A second beam diffuser (232) may be provided to adjust the path of the laser beam (201) coming from the first beam diffuser (231) or to diffuse it in another form.

That is, the reason why the first beam diffuser (231) and the second beam diffuser (232) are separately arranged is because adjusting the initial directionality of the laser beam (201) and precise manipulation through secondary diffusion or focusing each require different mechanical processing processes.

Here, it can be seen that the second beam diffuser (232) is larger in volume and size than the first beam diffuser (231). This is because a heavy object such as a transformer and a current transformer are built into the second beam diffuser (232), but additional devices may be built in to perform a more complex role than the first beam diffuser (231) in order to spread the laser beam (201) more widely or to perform detailed control.

At this time, the second beam diffuser (232) can have a relatively larger volume and size than the first beam diffuser (231) because the intensity and dispersion angle of the laser beam (201) can be controlled through an additional heat management system or electrical components.

Additional devices mentioned above may include the following:

As described above, the second beam diffuser (232) may have a built-in transformer and current transformer to control the power generated from the pulse laser (200) and stabilize the required voltage or current.

The transformer and current transformer can stably supply power to the laser device according to the present invention and can contribute to maintaining the intensity of the laser beam (201) constant.

Additionally, the aforementioned additional device may be an optical filter.

An optical filter allows only light of a specific wavelength to pass through and blocks light of unnecessary wavelengths. The wavelength selectivity of a laser beam (201) can be improved through this optical filter.

If an optical filter is built into the second beam diffuser (232), it can contribute to inducing a more precise photoreduction reaction.

Additionally, the aforementioned additional device may be a cooling system.

Since the laser device according to the present invention generates a lot of heat, a device such as a cooling fan, a water cooling device, or a heat sink may be additionally built in.

These cooling systems can contribute to the stability and durability of the entire device.

In particular, since the second beam diffuser (232) is larger in volume and size than the first beam diffuser (231), the cooling system described above is built in, so that the temperature of the laser beam (201) can be stably maintained during long-term use while ensuring the accuracy of the photoreduction reaction.

The first display window (233) serves to monitor the status of the first beam diffuser (231) and the degree of diffusion of the laser beam (201).

Since the first beam diffuser (231) is the first stage device that controls and diffuses the intensity of the laser beam (201) immediately after the laser beam (201) is irradiated from the light emitting unit (210), the status of the laser beam (201) can be checked in real time through the first display window (233).

That is, the diffusion state and intensity of the laser beam (201) can be displayed through the first display window (233), and by monitoring whether the first beam diffuser (231) is operating properly, immediate response is possible when an abnormality occurs.

Additionally, it is possible to check whether the intensity of the laser beam (201) is adjusted to the value set by the user through the first display window (233).

The first display window (233) may be used to manually adjust the setting values if necessary, or may provide information so that the laser device according to the present invention can automatically take appropriate action.

The second display window (234) provides information on the process of additionally spreading the laser beam (201) in the second beam diffuser (232).

The second beam diffuser (232) is the second diffusion stage of the laser beam (201) and is used when more fine adjustment is required, so the status of the laser beam (201) adjusted by the second beam diffuser (232) can be checked in real time through the second display window (234).

That is, it is possible to check whether the additional diffusion degree of the laser beam (201) is adjusted to a value set by the user through the second display window (234).

A plurality of control dials (235) may be provided to manually adjust the degree of diffusion, intensity, angle, etc. of the laser beam (201) in the second beam diffuser (232).

Meanwhile, the path management unit may include first, second, and third lenses (241, 242, 243) constituting a plurality of lenses.

The first lens (241) is installed on the installation block (141) so as to be angle-adjustable, and adjusts the path so that the laser beam (201) emitted from the light-emitting unit (210) is bent and emitted at a specific angle.

The second lens (242) is installed on the installation block (141) so as to be angle-adjustable, and adjusts the path so that the laser beam (201) irradiated through the first lens (241) is bent and irradiated at a specific angle.

The third lens (243) is installed on the installation block (141) so as to be angle-adjustable, and adjusts the path so that the laser beam (201) irradiated through the second lens (242) is bent at a specific angle and directed toward the light-receiving unit (310).

In addition, the path management unit may further include a first lens frame (251) having an inner surface that contacts the edge of the first lens (241) and is arranged on the upper side of the installation block (141).

In addition, the path management unit may further include a second lens frame (252) having an inner surface that contacts the edge of the second lens (242) and is arranged on the upper side of the installation block (141).

In addition, the path management unit may further include a third lens frame (253) having an inner surface that contacts the edge of the third lens (243) and is arranged on the upper side of the installation block (141).

In addition, the path management unit may further include a first lens support rod (261) extending from the outer surface of the first lens frame (251) toward the upper surface of the installation block (141), and a first lens installation piece (271) extending along the outer surface of the lower end of the first lens support rod (261).

In addition, the path management unit may further include a second lens support rod (262) extending from the outer surface of the second lens frame (252) toward the upper surface of the installation block (141), and a second lens installation piece (272) extending along the outer surface of the lower end of the second lens support rod (262).

In addition, the path management unit may further include a third lens support rod (263) extending from the outer surface of the third lens frame (253) toward the upper surface of the installation block (141), and a third lens installation piece (273) extending along the outer surface of the lower end of the third lens support rod (263).

In addition, the path management unit may further include a first angle adjustment actuator (not shown) that is detachably coupled to a specific position among the installation holes (142) formed in a plurality of rows and columns on the upper surface of the installation block (141) to support and support the first lens installation piece (271).

In addition, the path management unit may further include a second angle adjustment actuator (not shown) that is detachably coupled to a specific location among the installation holes (142) to support the second lens installation piece (272).

In addition, the path management unit may further include a third angle adjustment actuator (not shown) that is detachably coupled to a specific location among the installation holes (142) to support the third lens installation piece (273).

At this time, the first angle adjustment actuator, the second angle adjustment actuator, and the third angle adjustment actuator may be operated separately or simultaneously.

That is, the laser beam (201) is irradiated from the light emitting unit (210) and sequentially passes through the first lens (241), the second lens (242), and the third lens (243) to reach the light receiving unit (310).

Each lens (241, 242, 243) prevents excessive diffusion of the laser beam (201) and performs the function of converging or focusing the laser beam (201) at a specific distance to precisely and uniformly reach the light receiving portion (310).

That is, each lens (241, 242, 243) is provided to precisely control the path and focus of the laser beam (201).

In addition, each lens (241, 242, 243) is provided to minimize optical distortion so that the direction, focus, and final path of the laser beam (201) can be finely adjusted so that it can reach the exact irradiation point, i.e., the light receiving portion (310).

Additionally, in applications such as high-precision silver nanoparticle extraction, pulsed lasers (200) require high energy and precision.

Therefore, each lens (241, 242, 243) allows the laser beam (201) to accurately reach the light receiving unit (310) while reducing energy loss while passing through various wavelengths.

In other words, each lens (241, 242, 243) does not simply serve to transmit the laser beam (201), but also plays an essential role in adjusting and focusing the path of the laser beam (201) and can be designed to maximize the overall performance and efficiency of the laser device according to the present invention.

The first angle adjustment actuator, the second angle adjustment actuator, and the third angle adjustment actuator described above can adopt a piezoelectric inertia actuator to perform not only displacement according to reciprocation in the XYZ axes direction, but also rotational motion with the XYZ axes as the rotational axes, respectively.

In the photoreduction silver nanoparticle extraction method using a laser beam (201), not only the laser irradiation method but also the laser irradiation angle is very important.

Here, the photoreduction phenomenon is a phenomenon in which a high-density laser wavelength is irradiated on the extract solution to cause a photoreduction reaction, and if the irradiation angle of the laser beam (201) is different, it can directly affect the photoreduction rate.

At this time, the laser device according to the present invention may generate a fine vibration when operating, which is a factor that may affect the irradiation angle, and therefore, a table (110) provided to prevent this may be referred to as a vibration suppression table.

However, when the laser device according to the present invention is used for a long period of time, a slight deviation in the irradiation angle may occur even on the table (110), more specifically, on the installation block (141), so there is a possibility of deviation from the targeted irradiation area.

Therefore, when designing a laser device according to the present invention, it is necessary to develop a high-precision control device that can automatically adjust to the initial setting value (irradiation targeting area) when the laser device according to the present invention is operated later by applying a piezoelectric inertial actuator that can move each lens (241, 242, 243) at a fine angle, based on the initial setting value (irradiation targeting area).

The position setting value of the laser beam (201) is obtained by acquiring the position information of the laser beam (201) through a photodiode sensor (not shown below), setting an initial reference value, and then monitoring the photo sensor value, and then feeding back the micro-movement of the laser beam (201) using the piezoelectric inertial actuator described above, thereby enabling optimal position control.

Therefore, high-precision angle and position adjustment of each lens (241, 242, 243) can be achieved by using piezoelectric inertial actuators, i.e., the first, second, and third angle adjustment actuators.

Meanwhile, a precipitation liquid inlet port (301) is provided on one side of the precipitation liquid container (300) and communicates with the interior of the precipitation liquid container (300), and a precipitation liquid outlet port (302) is provided on another side of the precipitation liquid container (300) and is positioned at a lower position than the inlet port and can communicate with the interior of the precipitation liquid container (300).

In addition, a sediment supply tank (400) is arranged on the lower side of the installation block (141) and connected to a sediment inlet port (301), and a sediment return tank (500) is arranged on the lower side of the installation block (141) and connected to a sediment outlet port (302).

Accordingly, the precipitate to be photoreduced can undergo a photoreduction reaction in the precipitate supply tank (400) and then circulate through the precipitate return tank (500), thereby allowing precipitation and accumulation of silver nanoparticles from the precipitate to be photoreduced.

That is, the sediment supply tank (400) and the sediment return tank (500) are placed on the lower panel (120) of the aforementioned support member (100), thereby enabling stable installation.

In order to form a circulation path of the sedimentation liquid container (300), the sedimentation liquid supply tank (400), and the sedimentation liquid return tank (500), an inflow pipe section (320) including a first inflow pipe (321) connected to the sedimentation liquid inlet port (301) and a first inflow coupling (323) provided at the end of the first inflow pipe (321) may be further provided.

In addition, in order to form the aforementioned circulation path, an outlet pipe section (330) including a first outlet pipe (331) connected to the sedimentation liquid outlet port (302) and a first outlet coupling (333) provided at the end of the first outlet pipe (331) may be further provided.

In addition, in order to form the aforementioned circulation path, a first tank coupling (341) provided on one side of the sediment supply tank (400) and communicating with the interior of the sediment supply tank (400), and a second inlet pipe (340) having a tip connected to the first tank coupling (341) may be further provided.

In addition, in order to form the aforementioned circulation path, a second inflow coupling (342) may be further provided at the end of the second inflow pipe (340) and detachably coupled to the first inflow coupling (323).

In addition, in order to form the aforementioned circulation path, a second tank coupling (352) provided on one side of the sedimentation liquid return tank (500) and communicating with the interior of the sedimentation liquid return tank (500), and a second outlet pipe (350) having a tip connected to the second tank coupling (352) may be further provided.

In addition, in order to form the aforementioned circulation path, a second outlet coupling (351) may be further provided at the end of the second outlet pipe (350) and detachably coupled to the first outlet coupling (333).

That is, as the laser beam (201) passes through each lens (241, 242, 243), it is focused and its path is adjusted, and finally it is irradiated into the sedimentation solution container (300) through the light receiving unit (310).

When a laser beam (201) is irradiated on a precipitate to be photoreduced, the high energy of the laser beam (201) is absorbed by metal ions, particularly silver (Ag) ions, contained in the precipitate.

This promotes a photoreduction reaction, which is the process in which a substance that absorbs light energy releases or acquires electrons to cause a redox reaction.

Here, a specific wavelength of the laser beam (201) is suitable for reducing silver ions (Ag+) into silver nanoparticles (Ag).

At this time, when the energy of the laser beam (201) exceeds the reduction potential of silver ions, the silver ions acquire electrons and are converted into metallic silver (Ag).

That is, the photoreduced silver ions are converted into nanoparticles while being reduced to metallic silver.

In this process, the energy of the laser beam (201) helps the nanoparticles maintain a uniform and fine size.

That is, the laser beam (201) controls the formation of silver nanoparticles and maintains their size and distribution constant.

The size and formation pattern of nanoparticles vary depending on the intensity, irradiation time, and irradiation angle of the laser beam (201).

Through this, silver nanoparticles of various sizes can be formed, or silver nanoparticles of a desired size can be selectively formed.

The formed silver nanoparticles gradually aggregate or precipitate within the precipitation liquid, and these silver nanoparticles are introduced into the precipitation liquid container (300) through the precipitation liquid inlet port, and stable formation and accumulation of the silver nanoparticles are achieved for a specific period of time.

Although not specifically illustrated in the present invention, a circulation system may be additionally provided to enable continuous circulation of the sediment supply tank (400), the sediment container (300), and the sediment return tank (500).

These silver nanoparticles accumulate in the sedimentation vessel (300) and can then be recovered by methods such as physical filtering or centrifugation.

Meanwhile, the laser device according to the present invention may further include a plurality of container support pieces (303) that are formed to protrude from the lower surface of the sedimentation container (300) so that the lower surface of the sedimentation container (300) is placed at a certain distance from the upper surface of the installation block (141).

The reason why the sedimentation tank (300) is spaced apart by a plurality of tank support pieces (303) instead of being installed directly on the installation block (141) is as follows.

First, multiple container support pieces (303) can be provided for the purpose of heat dissipation and cooling.

That is, when a laser beam (201) is irradiated into the interior of a sedimentation liquid container (300), the high-energy laser beam (201) is absorbed by the sedimentation liquid and causes a photoreduction reaction. In this process, heat accumulates inside the container, and the temperature of the sedimentation liquid container (300) itself may also rise.

At this time, if a certain gap is provided between the sedimentation container (300) and the installation block (141) using the container support piece (303), heat can be naturally released from the bottom of the sedimentation container (300), thereby preventing overheating and increasing the stability of the system.

Additionally, multiple container support members (303) can be provided for the purpose of alleviating vibration and shock.

That is, when the laser beam (201) is irradiated onto the sedimentation liquid container (300), a fine vibration may occur in the sedimentation liquid container (300) due to the high-energy laser beam (201).

If the sedimentation liquid container (300) is in direct contact with the installation block (141), vibration may be transmitted to other parts through the installation block (141) or may cause shock to the system.

In other words, the spacing arrangement through multiple container support pieces (303) can serve as a buffer to prevent such vibrations from being directly transmitted through the installation block (141), thereby contributing to extending the stability and lifespan of the system.

In addition, multiple container support members (303) can be provided for the purpose of increasing convenience of maintenance and ensuring accessibility.

That is, the sedimentation liquid container (300) is an important component for recovering silver nanoparticles, and it is necessary to regularly replace or check the sedimentation liquid inside the container.

In other words, by being separated by a certain distance by the container support piece (303), it becomes easy to access the circulation path of the leaching solution or the installation block (141) at the bottom of the sedimentation solution container (300).

This can help simplify maintenance work and provide easier access for workers to efficiently inspect components inside and around the sedimentation tank (300).

Additionally, multiple container support members (303) can be provided to enhance safety.

That is, the sedimentation container (300) can be protected from direct impact or external heat or chemical fluctuations through the container support piece (303)(303).

In other words, since the plurality of container support pieces (303) maintain a certain distance from the installation block (141), physical damage or thermal damage caused by external factors does not directly affect the container.

Meanwhile, the laser device according to the present invention may further include a main controller (600) provided on one side of the installation block (141) to control and monitor in real time the operation of the pulse laser (200), the path management unit, and the sedimentation liquid container (300).

Here, a display panel (610) is provided on the front face of the main controller (600) to visually display the operation control and monitoring status of the pulse laser (200), path management unit, and sedimentation liquid container (300).

At this time, a plurality of operation buttons (620) are provided on the front of the main controller (600) to directly control the operation of the pulse laser (200), the path management unit, and the sedimentation liquid container (300).

The main controller (600) may be provided to play an important role in maintaining conditions necessary for the laser device according to the present invention to recover silver nanoparticles to the maximum extent possible.

The following various operations can be performed through multiple operation buttons (620).

First, the wavelength of the pulse laser (200) can be adjusted through multiple operation buttons (620).

That is, by providing a function to manually set the wavelength of the pulse laser (200), the recovery performance of silver nanoparticles according to various wavelengths can be optimized.

For example, one can fine-tune the wavelength optimized for silver nanoparticle formation by selecting a specific wavelength.

Additionally, the pulse duration of the pulse laser (200) can be adjusted through multiple operation buttons (620).

That is, by controlling the pulse duration of the laser beam (201), the irradiation time of the laser beam (201) can be finely adjusted.

This can be freely set between 5 ns and 100 ns to adjust the output of the laser beam (201) to suit the response time.

Additionally, the output intensity of the laser beam (201) can be adjusted through multiple operation buttons (620).

That is, the formation speed of silver nanoparticles can be controlled by increasing or decreasing the energy intensity of the laser beam (201) by adjusting the output intensity of the laser beam (201).

Additionally, the operation of the cooling system can be controlled through multiple operation buttons (620).

That is, by manipulating the cooling system, the heat generated during the operation of the pulse laser (200) can be effectively controlled, and in particular, overheating caused by the laser beam (201) can be prevented.

Additionally, the circulation system can be controlled through multiple operation buttons (620).

That is, by controlling the liquid circulation speed within the precipitation liquid container (300), the flow speed of the precipitation liquid can be adjusted to suit the reaction conditions.

Additionally, the automatic and manual modes can be switched through multiple operation buttons (620).

That is, the laser device according to the present invention can be switched between automatic mode and manual mode.

In automatic mode, the laser device according to the present invention is automatically operated according to the set parameters, and in manual mode, the user can directly adjust each parameter to operate it.

As described above, it can be seen that the basic technical idea of the present invention is to provide a laser device for extracting silver nanoparticles from waste solar modules, which enables extracting silver, one of the valuable metals contained in waste solar modules, as a nanoparticle material when recycling waste solar modules.

And, of course, many other modifications and applications are also possible for those with common knowledge in the industry within the scope of the basic technical idea of the present invention.

100...support
110...table
111...upper frame
112...supporting leg
120...lower panel
130...Wheel Assembly
131...Movement wheel
132...Wheel Support Bracket
140...Installation section
141...Installation block
142...Installation hole
200...pulse laser
201...Laser Beam
210...Light emitting part
211...1st Ground
2111...1st fixed cable
2112...1st coupling
212...2nd Ground
2121...Second fixed cable
2122...2nd coupling
221...3rd coupling
222...4th coupling
223...1st extension cable
224...2nd extension cable
231...1st beam diffuser
232...2nd beam diffuser
233...1st display window
234...2nd display window
235...Adjustment Dial
241...1st lens
241...2nd lens
243...3rd lens
251...1st lens frame
252...2nd lens frame
253...3rd lens frame
261...1st lens support rod
262...Second lens support rod
263...3rd lens support rod
271...Installation of the first lens
272...Second Lens Installation
273...Installation of the 3rd lens
300...sedimentation container
301...Sediment inlet port
302...Sediment outlet port
303...Courage Support
310...Light receiving unit
320...Inlet pipe
321...1st inlet pipe
323...1st inlet coupling
330...Outflow pipe
331...1st outlet pipe
333...1st leak coupling
340...2nd inlet pipe
341...1st tank coupling
342...2nd inflow coupling
350...2nd outlet pipe
351...Second leak coupling
352...2nd tank coupling
400...sediment supply tank
500... Sediment return tank
600...Main Controller
610...Display Panel
620...Operation Buttons
700...Installation target area

Claims (10)

An installation part having an installation block, and a support part including installation holes formed in a plurality of rows and columns on the upper surface of the installation block;
A pulse laser having a light emitting unit installed on one side of the upper surface of the above installation block and radiating a laser beam in one direction;
A first lens, which is installed on one side of the upper surface of the installation block so that the laser beam is accurately delivered to the destination by minimizing optical distortion and energy loss from the light emitting unit, and which adjusts the path of the laser beam irradiated from the light emitting unit to be bent at a specific angle, a second lens, which is installed on the installation block so that the angle is adjustable and which adjusts the path of the laser beam irradiated through the first lens to be bent at a specific angle, a third lens, which is installed on the installation block so that the angle is adjustable and which adjusts the path of the laser beam irradiated through the second lens to be bent at a specific angle and directed toward the light receiving unit, a first lens frame having an inner surface in contact with an edge of the first lens and arranged on the upper side of the installation block, a second lens frame having an inner surface in contact with an edge of the second lens and arranged on the upper side of the installation block, a third lens frame having an inner surface in contact with an edge of the third lens and arranged on the upper side of the installation block, and a first lens frame having an outer surface from the first lens frame. A first lens support rod extending toward the upper surface of the installation block, a first lens installation piece extending along the outer surface of the lower end of the first lens support rod, a second lens support rod extending from the outer surface of the second lens frame toward the upper surface of the installation block, a second lens installation piece extending along the outer surface of the lower end of the second lens support rod, a third lens support rod extending from the outer surface of the third lens frame toward the upper surface of the installation block, a third lens installation piece extending along the outer surface of the lower end of the third lens support rod, a first angle adjustment actuator detachably coupled to a specific position of the installation hole to support and support the first lens installation piece, a second angle adjustment actuator detachably coupled to a specific position of the installation hole to support and support the second lens installation piece, and a third angle adjustment actuator detachably coupled to a specific position of the installation hole to support and support the third lens installation piece, wherein the first angle adjustment A path management unit in which the actuator and the second angle adjustment actuator and the third angle adjustment actuator are operated individually or simultaneously; and
A laser device for extracting silver nanoparticles from waste solar modules, characterized by comprising: a precipitation liquid container having a space for receiving a precipitation liquid to be photoreduced by heat treatment and dismantling from a waste solar module and acid and alkali leaching, and a light receiving unit disposed on one side of the upper surface of the installation block and into which the laser beam is injected from the light emitting unit through the path management unit; and a plurality of container support pieces that protrude from the lower surface of the precipitation liquid container so that the lower surface of the precipitation liquid container is placed at a certain distance from the upper surface of the installation block.
In claim 1,
The above support part,
Further comprising a table having an upper surface on which the above installation block is installed,
A laser device for extracting silver nanoparticles from solar waste modules, characterized in that the table is installed movably and fixedly with respect to the installation target surface.
In claim 1,
A laser device for extracting silver nanoparticles from solar cell waste modules, characterized in that the pulse laser is a neodymium-doped yttrium aluminum garnet (Nd:YAG) laser.
In claim 1,
A first beam diffuser electrically connected to the pulse laser to diffuse and disperse the laser beam generated from the light-emitting unit to a certain degree to control the intensity of the laser beam and to transmit it stably by the path management unit;
A laser device for extracting silver nanoparticles from a solar cell waste module, characterized in that it further includes a second beam diffuser that is electrically connected to the pulse laser and re-disperses the beam diffused by the first beam diffuser to expand the irradiation range of the laser beam or to uniformly irradiate a wider area while lowering the energy density at a specific point.
delete delete delete delete In claim 1,
A sedimentation liquid inlet port provided on one side of the sedimentation liquid container and communicating with the interior of the sedimentation liquid container,
A sedimentation outlet port provided on one side of the sedimentation container and positioned at a lower position than the inlet port and communicating with the interior of the sedimentation container;
A sediment supply tank positioned on the lower side of the above installation block and connected to the sediment inlet port,
It further includes a sediment return tank arranged on the lower side of the above installation block and connected to the sediment outlet port,
A laser device for extracting silver nanoparticles from spent solar modules, characterized in that the precipitate to be photoreduced undergoes a photoreduction reaction in the precipitate container from the precipitate supply tank and circulates through the precipitate return tank, thereby causing precipitation and accumulation of silver nanoparticles from the precipitate to be photoreduced.
In claim 1,
A laser device for extracting silver nanoparticles from solar waste modules, characterized in that it further includes a main controller provided on one side of the installation block to control and monitor in real time the operation of the pulse laser, the path management unit, and the sedimentation solution container.

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