Dust retention acidic cleaning agent and application thereof

Abstract

The invention discloses a dust retention acidic cleaning agent and application, and belongs to the technical field of cleaning agents. The accumulated dust acidic cleaning agent comprises the following components in percentage by mass: 1.0%-6.0% of sulfamic acid, 0.5%-4.0% of an alkaline pH regulator, 1.0%-4.0% of an anionic surfactant, 0.3%-0.5% of a foaming agent and the balance of demineralized water. The dirt retention acidic cleaning agent further comprises 1.0%-4.0% of acetone, 0.5%-1.0% of sodium chloride and 0.05%-0.1% of an IS-129 hydrochloric acid corrosion inhibitor. The dirt retention acidic cleaning agent further comprises 0.5%-4.0% of ammonium citrate and 1.0%-2.0% of polyoxyethylene lauryl ether. The cleaning agent is used for solving the problem that accumulated dust of a photovoltaic panel in a factory area is difficult to remove.

Description

Technical Field

[0001] The invention belongs to the technical field of cleaning agents, and in particular relates to an acidic cleaning agent for dust accumulation and an application thereof. Background Art

[0002] The efficiency of photovoltaic panels is significantly affected by dust accumulation, which is a problem that cannot be ignored. In order to meet this challenge, photovoltaic power plants generally use cleaning robots or manual methods to perform regular dust cleaning operations. In non-factory areas, the dust accumulated on photovoltaic panels due to natural sedimentation is usually loose and can be easily removed by simple blowing or water washing.

[0003] However, the dust accumulation challenges faced by photovoltaic panels on rooftops or near factory areas are particularly unique and complex. This is mainly due to specific environmental pollutants generated by industrial production activities, which are more adherent and corrosive to photovoltaic panels. Specifically, these pollutants include soot, metals and metal oxides, polycyclic aromatic hydrocarbons, grease, and fibers, which are diverse and complex. Not only do they gradually absorb dust in the air to form a crystalline shell, but they also tend to have strong adhesion and high hardness, tightly adhering to the surface of the photovoltaic panel, making it difficult to remove by conventional physical cleaning methods.

[0004] What is even more difficult is that for some photovoltaic panels in factory areas that have not been cleaned for a long time, the microorganisms carried on the dust may be further solidified after being washed by rainwater. During the growth of microorganisms, they will secrete mold spots containing enzymes and organic acids. These mold spots combine with pollutants to form stubborn dust that is difficult to remove by blowing or water washing. This dense and uneven dust accumulation will not only reduce the power generation efficiency of photovoltaic panels, but may also produce hot spot effects, damage photovoltaic panels, and even cause safety hazards such as fires.

[0005] In addition, the production types of heavy factories and light factories are different, and the pollution sources are also different. This leads to differences in the composition and characteristics of photovoltaic panel dust in different types of factory areas, which further increases the difficulty and complexity of dust cleaning. Therefore, it is particularly important to develop an efficient cleaning agent that can be used for photovoltaic panel dust in different types of factory areas.

[0006] Although there are many types of tempered glass cleaning agents on the market, there are almost no products that can be effectively used to clean stubborn dust on photovoltaic panels in factory areas. Moreover, most cleaning agents are neutral or alkaline, which may corrode glass and damage photovoltaic panels. Therefore, it is of vital importance to develop an efficient acidic chemical cleaning agent designed specifically for photovoltaic panels on factory roofs. This cleaning agent needs to be able to remove stubborn dust in a targeted manner while protecting photovoltaic panels from damage to ensure the efficient operation of the photovoltaic system and improve power generation efficiency. This will not only help improve the economic benefits of photovoltaic power stations, but also help promote the sustainable development of renewable energy. Summary of the invention

[0007] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a dust acid cleaning agent and application thereof, so as to solve the problem that dust accumulation on photovoltaic panels in factory areas is difficult to remove.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] The present invention provides an acidic dust cleaning agent, which comprises, by mass percentage:

[0010] 1.0% to 6.0% of aminosulfonic acid, 0.5% to 4.0% of alkaline pH regulator, 1.0% to 4.0% of anionic surfactant, 0.3% to 0.5% of foaming agent, and the balance is desalted water.

[0011] In a specific implementation, the dust acid cleaning agent further comprises, by mass percentage, 1.0% to 4.0% acetone, 0.5% to 1.0% sodium chloride, and 0.05% to 0.1% IS-129 hydrochloric acid corrosion inhibitor.

[0012] In a specific implementation, the dust acid cleaning agent further includes 0.5% to 4.0% of ammonium citrate and 1.0% to 2.0% of lauryl alcohol polyoxyethylene ether in percentage by mass.

[0013] In a specific embodiment, the alkaline pH regulator is one of disodium hydrogen phosphate or sodium citrate; the anionic surfactant is one or more of monolauryl phosphate, dodecylbenzene sulfonic acid, and alcohol ether phosphate surfactants; and the foaming agent is a dinitrosopentamethylenetetramine foaming agent.

[0014] In a specific implementation manner, the pH value of the dust acid cleaning agent is 2.5-4.0.

[0015] The present invention also provides the use of the dust-accumulated acid cleaning agent in cleaning photovoltaic panels in a factory area.

[0016] In a specific embodiment, the factory area is a heavy industry area, and the dust components of the photovoltaic panels in the heavy industry area include metal oxides, carbonates, silicates, residual organic matter from incomplete combustion of coal powder, polycyclic aromatic hydrocarbons and fly ash.

[0017] In a specific implementation, the factory area is a light factory area, and the dust components of the photovoltaic panels in the light factory area are mainly light impurities, and the light impurities include inorganic dust, fiber filaments, and wood chips.

[0018] In a specific embodiment, the cleaning process of the dust acid cleaning agent in cleaning the photovoltaic panels in the factory area is as follows:

[0019] The photovoltaic panels are cleaned with a dust acidic cleaning agent and then rinsed with water; the amount of dust acidic cleaning agent used to clean one square meter of photovoltaic panels is 500 to 2000 mL.

[0020] In a specific implementation, the dust acid cleaning agent stays on the photovoltaic panel surface for 10 to 60 seconds; the number of flushing is 1 to 2 times; and the usage ratio of water to dust acid cleaning agent is (1 to 2):1.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention provides a dust acid cleaning agent, including aminosulfonic acid, an alkaline pH regulator, an anionic surfactant, and a foaming agent, wherein aminosulfonic acid can react with metals and metal oxides, and has a strong calcium scale removal ability, which will increase the cleaning ability of metal oxides, which has an excellent removal effect on metal dust and carbonate and silicate particles unique to factory areas. The alkaline pH regulator has an alkaline aqueous solution, which can effectively adjust the pH value of the cleaning agent, so that it is stable within the optimal pH use range of several anionic surfactants in the components, thereby improving the stability and pickling effect of each component. Anionic surfactants have excellent emulsification, solubilization, decontamination, dispersion, cleaning, wetting, antistatic and rust prevention properties. They are suitable for compatibility with other components of the acid cleaning agent and can meet the cleaning needs of most factory area scenes. The foaming agent has good stability, can play a foaming role in the cleaning agent, and helps to improve the cleaning effect. In summary, the various components of the dust acid cleaning agent work synergistically to jointly improve the cleaning effect, stability and applicability of the cleaning agent. In addition, acidic cleaners can handle inorganic dirt that is difficult to remove with alkaline cleaners.

[0023] Furthermore, the dust acid cleaning agent also includes acetone, sodium chloride, and IS-129 hydrochloric acid corrosion inhibitor, which is suitable for cleaning dust on photovoltaic panels in heavy industrial plants. The dust composition of photovoltaic panels in heavy industrial plants is complex, including metal oxides, carbonates, silicates, residual organic matter from incomplete combustion of coal powder, polycyclic aromatic hydrocarbons, and fly ash. Among them, polycyclic aromatic hydrocarbons in the dust, as an organic matter, are hydrophobic, and the hydrophobicity gradually increases with the increase of the number of benzene rings. The cleaning agent composed of aminosulfonic acid, alkaline pH regulator, anionic surfactant, and foaming agent can be used to remove this type of dust, but when acetone and sodium chloride are added to it, NaCl reacts with aminosulfonic acid to generate hydrochloric acid, which enhances the reactivity to metal and its oxide dust; acetone, as an organic solvent, is fat-soluble and water-soluble, and can effectively dissolve and remove various organic matter and adhesives on the surface of photovoltaic panels; IS-129 hydrochloric acid corrosion inhibitor plays a role in avoiding corrosion of the photovoltaic panel frame, which can further improve the cleaning effect.

[0024] Furthermore, the dust acid cleaning agent also includes ammonium citrate and lauryl alcohol polyoxyethylene ether, which is suitable for cleaning dust from photovoltaic panels in light industrial plants. Since there are fewer organic substances in the dust from photovoltaic panels in light industrial plants, but various fiber filaments, wood chips, etc. are easily scattered and adsorbed by dust, ammonium citrate and lauryl alcohol polyoxyethylene ether are added to the cleaning agent. Among them, ammonium citrate has the effects of both detergent and penetration aid, which can reduce the diffusion resistance of the cleaning agent between fibers and reduce its adsorption on grease; at the same time, lauryl alcohol polyoxyethylene ether, as an antistatic agent, can further reduce the electrostatic effect of the fiber. When a cleaning agent composed of aminosulfonic acid, alkaline pH regulator, anionic surfactant, and foaming agent and the added ammonium citrate and lauryl alcohol polyoxyethylene ether are used at the same time, the cleaning effect of dust adhering to various fibers can be significantly improved. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to understand the characteristics and effects of the present invention, the following is a general description and definition of the terms and expressions mentioned in the specification and claims. Unless otherwise specified, all technical and scientific terms used in the text are the common meanings understood by those skilled in the art for the present invention. In the event of a conflict, the definition in this specification shall prevail.

[0026] The theories or mechanisms described and disclosed herein, whether correct or incorrect, should not limit the scope of the present invention in any way, that is, the present invention can be implemented without being limited by any specific theory or mechanism.

[0027] Herein, all features such as values, quantities, contents and concentrations defined in the form of numerical ranges or percentage ranges are for simplicity and convenience only. Accordingly, the description of numerical ranges or percentage ranges should be considered to have included and specifically disclosed all possible secondary ranges and individual values ​​within the range (including integers and fractions).

[0028] In this document, unless otherwise specified, “includes,” “including,” “contains,” “has,” or similar terms cover the meanings of “consisting of” and “mainly consisting of,” for example, “A includes a” covers the meanings of “A includes a and other” and “A only includes a.”

[0029] In this document, in order to make the description concise, not all possible combinations of various technical features in various embodiments or examples are described. Therefore, as long as there is no contradiction in the combination of these technical features, the various technical features in various embodiments or examples can be combined arbitrarily, and all possible combinations should be considered to be within the scope of this specification.

[0030] The invention provides an acidic cleaning agent for dust accumulation and application thereof.

[0031] On the one hand, a dust acid cleaning agent is provided, which comprises, by mass percentage:

[0032] 1.0% to 6.0% aminosulfonic acid, 0.5% to 4.0% alkaline pH regulator, 1.0% to 4.0% anionic surfactant, 0.3% to 0.5% foaming agent, and the balance is demineralized water. The components of this formula are referred to as component A. The pH value of the above dust acid cleaning agent is 2.5 to 4.0. In the pH range of 2.5 to 4.0, the aminosulfonic acid has the best cleaning effect, and the other components can also maintain their stability.

[0033] On the one hand, acetone, sodium chloride, and IS-129 hydrochloric acid corrosion inhibitor are added to the above-mentioned dust acid cleaning agent. Specifically, the dust acid cleaning agent includes 1.0% to 6.0% aminosulfonic acid, 0.5% to 4.0% alkaline pH regulator, 1.0% to 4.0% anionic surfactant, 0.3% to 0.5% foaming agent, 1.0% to 4.0% acetone, 0.5% to 1.0% sodium chloride, 0.05% to 0.1% IS-129 hydrochloric acid corrosion inhibitor, and the balance is desalted water. Among them, 1.0% to 4.0% acetone, 0.5% to 1.0% sodium chloride, and 0.05% to 0.1% IS-129 hydrochloric acid corrosion inhibitor in the following formula are referred to as component B.

[0034] On the one hand, ammonium citrate and lauryl alcohol polyoxyethylene ether are added to the above-mentioned dust acid cleaning agent. Specifically, the dust acid cleaning agent includes 1.0% to 6.0% aminosulfonic acid, 0.5% to 4.0% alkaline pH regulator, 1.0% to 4.0% anionic surfactant, 0.3% to 0.5% foaming agent, 0.5% to 4.0% ammonium citrate, 1.0% to 2.0% lauryl alcohol polyoxyethylene ether, and the balance is deionized water. Among them, 0.5% to 4.0% ammonium citrate and 1.0% to 2.0% lauryl alcohol polyoxyethylene ether in the following formula are referred to as component C.

[0035] In one embodiment, the alkaline pH regulator is one of disodium hydrogen phosphate or sodium citrate; the anionic surfactant can be one or more of monolauryl phosphate, dodecylbenzene sulfonic acid, and alcohol ether phosphate surfactants. In addition, the foaming agent is preferably a dinitrosopentamethylenetetramine foaming agent.

[0036] The dust acid cleaning agent is prepared by gradually adding various components to a calculated amount of desalted water, and finally adding an alkaline pH regulator to adjust the pH of the solution to between 2.5 and 4.0. In the pH range of 2.5 to 4.0, the aminosulfonic acid cleaning effect is optimal, and the remaining components can also maintain their stability.

[0037] Preferably, when using the dust acid cleaning agent, it is recommended to place a small preheating device in front of the water outlet of the equipment to heat the dust acid cleaning agent to no more than 50°C for use, which will have a better cleaning effect.

[0038] Another aspect of the present invention provides the use of a dust-accumulated acid cleaning agent in cleaning photovoltaic panels in a factory area.

[0039] Furthermore, for coal-fired power plants, coking plants, steel plants, chemical plants, printing and dyeing plants and other heavy industrial areas, the cleaning agent should use dust acid cleaning agents composed of both component A and component B. The dust components of photovoltaic panels in such factory areas include fly ash, residual organic matter from incomplete combustion of coal powder, etc., which contain carbonates, silicates, polycyclic aromatic hydrocarbons, etc. in addition to metal oxides. Component B needs to be added to remove the adsorbed organic matter and generate a small amount of hydrochloric acid to consume the produced carbonates.

[0040] In the dust acid cleaning agent composed of component A and component B, 1) polycyclic aromatic hydrocarbons, as an organic matter, have a certain hydrophobicity, and as the number of benzene rings increases, the hydrophobicity gradually increases. It is difficult to remove this type of dust using only component A. When using component A + component B, the simultaneous use of NaCl and aminosulfonic acid will generate hydrochloric acid, which increases the reactivity to metal and its oxide dust. 2) acetone, as a fat-soluble and water-soluble organic solvent, can dissolve various organic matter and adhesives adsorbed on the surface of photovoltaic panels, desorb them, and then quickly volatilize them, so that they are re-adsorbed by dust and finally removed.

[0041] Furthermore, for light factory areas such as textile factories, building materials factories, and food factories, the cleaning agent should use a dust acid cleaning agent composed of component A and component C. There are fewer organic substances in the dust components of photovoltaic panels in such factory areas, while various fiber filaments, wood chips, etc. are easy to float and are adsorbed by dust after rain and adhere to photovoltaic panels. It is necessary to add component C, which contains a penetration aid and an antistatic agent, which is conducive to removing various fibers that are prone to static electricity.

[0042] In the dust acid cleaning agent composed of component A and component C, 1) various types of fibers are prone to generate static electricity due to factors such as electric field induction and hot air drying, and ammonium citrate has the effects of both a detergent and a penetration aid, which reduces the diffusion resistance of the cleaning agent components between fibers and reduces their adsorption on grease; 2) lauryl alcohol polyoxyethylene ether (PEPJ O) is a non-ionic surfactant that is resistant to acid and alkali and can further reduce the electrostatic effect of fibers. When component A + component C is used, the cleaning effect on dust adhering to various types of fibers is improved.

[0043] For other types of factory areas that are not prone to pollution, the only cleaning agent used is the dust-removing acid cleaning agent composed of component A.

[0044] In the dust acid cleaning agent composed of component A, 1) aminosulfonic acid can react with metals and metal oxides, and has a strong ability to remove calcium scale, which will increase the cleaning ability of metal oxides, which has an excellent removal effect on metal dust and carbonate and silicate particles unique to the factory area; 2) the alkaline pH regulator (disodium hydrogen phosphate and sodium citrate aqueous solution) is alkaline and has the effect of adjusting the pH, which can stabilize the pH value of the cleaning agent between 2.5 and 4.0, and the optimal pH range of several anionic surfactants in the component is between 2.5 and 4.0, which can improve the stability of each component and improve the pickling effect; 3) Anionic surfactants are widely used surfactants and are suitable for compatibility with other components of the acid cleaning agent. Monolauryl phosphate surfactants have excellent emulsification, solubilization, antistatic and antirust properties; alcohol ether phosphate surfactants have excellent decontamination, emulsification, dispersion, cleaning, wetting, antistatic and antirust properties, and are suitable for most factory area scenarios. 4) Dinitrosopentamethylenetetramine plays a foaming role and has good stability.

[0045] In one embodiment, the cleaning process of the dust acidic cleaning agent in cleaning the photovoltaic panels in the factory area is as follows: the photovoltaic panels are cleaned with the dust acidic cleaning agent and then rinsed with water.

[0046] The volume of the acidic cleaning agent when used corresponds to the area of ​​the photovoltaic panel (500-2000mL): 1m 2 The average contact time between the photovoltaic panel and the cleaning agent is 10 to 60 seconds, followed by rinsing with water 1 to 2 times, with the volume of water used being 1 to 2 times the volume of the cleaning agent.

[0047] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0048] The following examples use conventional instruments and equipment in the art. The experimental methods in the following examples where specific conditions are not specified are usually carried out under conventional conditions or under conditions recommended by the manufacturer. The various raw materials used in the following examples are conventional commercial products unless otherwise specified, and their specifications are conventional specifications in the art. In the specification of the present invention and the following examples, unless otherwise specified, "%" means weight percentage, "part" means weight part, and ratio means weight ratio.

[0049] Embodiment 1:

[0050] The photovoltaic panels on the roof of a power plant were cleaned. The acidic cleaning agent contained component A and component B, including 1.0% aminosulfonic acid, 0.5% disodium hydrogen phosphate, 1.0% monolauryl phosphate, 1.0% acetone, 0.5% sodium chloride, 0.3% dinitrosopentamethylenetetramine, 0.05% IS-129 hydrochloric acid corrosion inhibitor and the remainder deionized water, pH = 4.0. The water tank containing the cleaning agent was connected to the photovoltaic panel cleaning robot for cleaning. The volume of the acidic cleaning agent when used corresponds to the area of ​​the photovoltaic panel: 2000mL: 1m 2 , the outlet heater temperature is 50 °C, the average contact time between the photovoltaic panel and the cleaning agent is 60 s, and then the photovoltaic cleaning robot is connected to the water tank for flushing once.

[0051] After cleaning, the average dust removal rate on the surface of the photovoltaic panels was measured to be over 95%.

[0052] Embodiment 2:

[0053] The photovoltaic panels on the roof of a chemical plant were cleaned. The acidic cleaning agent contained component A and component B, including 6.0% aminosulfonic acid, 4.0% disodium hydrogen phosphate, 4.0% dodecylbenzenesulfonic acid and isotridecyl alcohol polyoxyethylene ether phosphate surfactant, 4.0% acetone, 1.0% sodium chloride, 0.5% dinitrosopentamethylenetetramine, 0.1% IS-129 hydrochloric acid corrosion inhibitor and the remainder deionized water, pH = 2.5. The water tank containing the cleaning agent was connected to the photovoltaic panel cleaning robot for cleaning. The volume of the acidic cleaning agent when used corresponds to the area of ​​the photovoltaic panel: 500mL: 1m 2 , the outlet heater temperature was 40 °C, the average contact time between the photovoltaic panel and the cleaning agent was 10 s, and then the photovoltaic cleaning robot was connected to the water tank for rinsing twice.

[0054] After cleaning, the average dust removal rate on the surface of the photovoltaic panels was measured to be over 95%.

[0055] Embodiment 3:

[0056] The photovoltaic panels on the roof of a coking plant were cleaned. The acidic cleaning agent contained component A and component B, including 4.0% aminosulfonic acid, 0.5% sodium citrate, 2.0% dodecylbenzenesulfonic acid and 2.0% monolauryl phosphate surfactant, 1.5% acetone, 0.7% sodium chloride, 0.5% dinitrosopentamethylenetetramine, 0.1% IS-129 hydrochloric acid corrosion inhibitor and the remaining deionized water, pH = 2.8. The water tank containing the cleaning agent was connected to the photovoltaic panel cleaning robot for cleaning. The volume of the acidic cleaning agent when used corresponds to the area of ​​the photovoltaic panel: 1000mL: 1m 2, the outlet heater temperature was 40 °C, the average contact time between the photovoltaic panel and the cleaning agent was 10 s, and then the photovoltaic cleaning robot was connected to the water tank for rinsing twice.

[0057] After cleaning, the average dust removal rate on the surface of the photovoltaic panels was measured to be over 95%.

[0058] Embodiment 4:

[0059] The photovoltaic panels on the roof of a coking plant were cleaned. The acidic cleaning agent contained component A and component B, including 4.0% aminosulfonic acid, 0.5% sodium citrate, 0.5% dodecylbenzenesulfonic acid and 0.5% isomeric tridecanol polyoxyethylene ether phosphate surfactant, 1.5% acetone, 0.7% sodium chloride, 0.5% dinitrosopentamethylenetetramine, 0.1% IS-129 hydrochloric acid corrosion inhibitor and the remaining deionized water, pH = 2.8. The water tank containing the cleaning agent was connected to the photovoltaic panel cleaning robot for cleaning. The volume of the acidic cleaning agent when used corresponds to the area of ​​the photovoltaic panel: 500mL: 1m 2 , the outlet heater temperature was 40 °C, the average contact time between the photovoltaic panel and the cleaning agent was 10 s, and then the photovoltaic cleaning robot was connected to the water tank for rinsing twice.

[0060] After cleaning, the average dust removal rate on the surface of the photovoltaic panels was measured to be over 95%.

[0061] Embodiment 5:

[0062] The photovoltaic panels on the roof of a textile factory were cleaned. The acidic cleaning agent contained component A and component C, including 1.0% aminosulfonic acid, 1.0% disodium hydrogen phosphate, 1.0% dodecylbenzenesulfonic acid and JFC-1 surfactant, 0.3% dinitrosopentamethylenetetramine, 0.5% ammonium citrate, 1.0% lauryl alcohol polyoxyethylene ether and the remainder deionized water, pH = 4.0. The water tank containing the cleaning agent was connected to the photovoltaic panel cleaning robot for cleaning. The volume of the acidic cleaning agent when used corresponds to the area of ​​the photovoltaic panel: 1000mL: 1m 2 , the outlet heater temperature is 50 °C, the average contact time between the photovoltaic panel and the cleaning agent is 60 s, and then the photovoltaic cleaning robot is connected to the water tank for flushing once.

[0063] After cleaning, the average dust removal rate on the surface of the photovoltaic panels was measured to be over 95%.

[0064] Embodiment 6:

[0065] Photovoltaic panels near a building materials factory were cleaned. The acidic cleaning agent contained component A and component C, including 6.0% aminosulfonic acid, 4.0% disodium hydrogen phosphate, 1.0% dodecylbenzenesulfonic acid surfactant, 0.5% dinitrosopentamethylenetetramine, 4.0% ammonium citrate, 2.0% lauryl alcohol polyoxyethylene ether and the remainder deionized water, pH = 2.5. The water tank containing the cleaning agent was connected to the photovoltaic panel cleaning robot for cleaning. The volume of the acidic cleaning agent when used corresponds to the area of ​​the photovoltaic panel: 500mL: 1m 2 , the outlet heater temperature was 50 °C, the average contact time between the photovoltaic panel and the cleaning agent was 30 s, and then the photovoltaic cleaning robot was connected to the water tank for rinsing twice.

[0066] After cleaning, the average dust removal rate on the surface of the photovoltaic panels was measured to be over 95%.

[0067] Embodiment 7:

[0068] Photovoltaic panels near a building materials factory were cleaned. The acidic cleaning agent contained component A and component C, including 2.0% aminosulfonic acid, 4.0% sodium citrate, 1.0% monolauryl phosphate surfactant, 0.3% dinitrosopentamethylenetetramine, 4.0% ammonium citrate, 1.5% lauryl alcohol polyoxyethylene ether and the remainder deionized water, pH = 3.5. The water tank containing the cleaning agent was connected to the photovoltaic panel cleaning robot for cleaning. The volume of the acidic cleaning agent when used corresponds to the area of ​​the photovoltaic panel: 500mL: 1m 2 , the outlet heater temperature was 50 °C, the average contact time between the photovoltaic panel and the cleaning agent was 30 s, and then the photovoltaic cleaning robot was connected to the water tank for rinsing twice.

[0069] After cleaning, the average dust removal rate on the surface of the photovoltaic panels was measured to be over 95%.

[0070] Embodiment 8:

[0071] Photovoltaic panels near a building materials factory were cleaned. The acidic cleaning agent contained component A and component C, including 4.0% aminosulfonic acid, 4.0% sodium citrate, 1.0% isomeric tridecanol polyoxyethylene ether phosphate surfactant, 0.3% dinitrosopentamethylenetetramine, 4.0% ammonium citrate, 1.5% lauryl alcohol polyoxyethylene ether and the remainder deionized water, pH = 4.0. The water tank containing the cleaning agent was connected to the photovoltaic panel cleaning robot for cleaning. The volume of the acidic cleaning agent when used corresponds to the area of ​​the photovoltaic panel: 500mL: 1m 2 , the outlet heater temperature was 50 °C, the average contact time between the photovoltaic panel and the cleaning agent was 30 s, and then the photovoltaic cleaning robot was connected to the water tank for rinsing twice.

[0072] After cleaning, the average dust removal rate on the surface of the photovoltaic panels was measured to be over 95%.

[0073] Embodiment 9:

[0074] Photovoltaic panels near a small industrial park were cleaned. The acidic cleaning agent contained only component A, including 1.0% aminosulfonic acid, 1.0% disodium hydrogen phosphate, 1.0% dodecylbenzenesulfonic acid surfactant, 0.3% dinitrosopentamethylenetetramine and the remainder deionized water, pH = 4.0. The water tank containing the cleaning agent was connected to the photovoltaic panel cleaning robot for cleaning. The volume of the acidic cleaning agent when used corresponds to the area of ​​the photovoltaic panel: 500mL: 1m 2 The average contact time between the photovoltaic panel and the cleaning agent is 60s, the outlet heater temperature is 50°C, and then the photovoltaic cleaning robot is connected to the water tank for flushing once.

[0075] After cleaning, the average dust removal rate on the surface of the photovoltaic panels was measured to be over 95%.

[0076] Embodiment 10:

[0077] Photovoltaic panels near a small industrial park were cleaned. The acidic cleaning agent contained only component A, including 6.0% aminosulfonic acid, 4.0% disodium hydrogen phosphate, 0.5% monolauryl phosphate acid surfactant, 0.5% dinitrosopentamethylenetetramine and the remainder deionized water, pH = 2.5. The water tank containing the cleaning agent was connected to the photovoltaic panel cleaning robot for cleaning. The volume of the acidic cleaning agent when used corresponded to the area of ​​the photovoltaic panel: 2000mL: 1m 2 ,The average contact time between the photovoltaic panel and the cleaning agent is 10s, and then the photovoltaic cleaning robot is connected to the water tank for rinsing twice.

[0078] After cleaning, the average dust removal rate on the surface of the photovoltaic panels was measured to be over 95%.

[0079] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A dust acid cleaning agent, characterized in that: Measured by mass percentage, the dust acid cleaning agent comprises: 1.0% to 6.0% of aminosulfonic acid, 0.5% to 4.0% of alkaline pH regulator, 1.0% to 4.0% of anionic surfactant, 0.3% to 0.5% of foaming agent, and the balance is desalted water.

2. The dust acid cleaning agent according to claim 1, characterized in that: Calculated by mass percentage, the dust acid cleaning agent also includes 1.0% to 4.0% acetone, 0.5% to 1.0% sodium chloride, and 0.05% to 0.1% IS-129 hydrochloric acid corrosion inhibitor.

3. The dust acid cleaning agent according to claim 1, characterized in that: Calculated by mass percentage, the dust acid cleaning agent also includes 0.5% to 4.0% of ammonium citrate and 1.0% to 2.0% of lauryl alcohol polyoxyethylene ether.

4. The dust acid cleaning agent according to any one of claims 1 to 3, characterized in that: The alkaline pH regulator is one of disodium hydrogen phosphate or sodium citrate; the anionic surfactant is one or more of monolauryl phosphate, dodecylbenzene sulfonic acid, and alcohol ether phosphate surfactants; and the foaming agent is a dinitrosopentamethylenetetramine foaming agent.

5. The dust acid cleaning agent according to any one of claims 1 to 3, characterized in that: The pH value of the dust acid cleaning agent is 2.5-4.

0.

6. Use of the dust acid cleaning agent according to any one of claims 1 to 5 in cleaning photovoltaic panels in factory areas.

7. The use according to claim 6, characterized in that: The factory area is a heavy industry area, and the dust components of the photovoltaic panels in the heavy industry area include metal oxides, carbonates, silicates, residual organic matter from incomplete combustion of coal powder, polycyclic aromatic hydrocarbons and fly ash.

8. The use according to claim 6, characterized in that: The factory area is a light factory area, and the dust accumulation components of the photovoltaic panels in the light factory area are mainly light impurities, and the light impurities include inorganic dust, fiber filaments, and wood chips.

9. The use according to claim 6, characterized in that: The cleaning process of the dust acid cleaning agent in cleaning the photovoltaic panels in the factory area is as follows: The photovoltaic panels are cleaned with a dust acidic cleaning agent and then rinsed with water; the amount of dust acidic cleaning agent used to clean one square meter of photovoltaic panels is 500 to 2000 mL.

10. The use according to claim 9, characterized in that: The dust acid cleaning agent stays on the photovoltaic panel surface for 10 to 60 seconds; the flushing is performed 1 to 2 times; and the usage ratio of water to dust acid cleaning agent is (1 to 2):1.