Flooded ultraviolet light concentrating catalytic hydrogen production device, method and use

Abstract

To provide a projected UV-concentrated photocatalyst hydrogen production device, method and use, capable of remarkably reducing a hydrogen production cost by storing electric power in a form of hydrogen energy and producing hydrogen by using electric power of a low price and a negative price, such as renewable energy power generation, bottom electricity and waste electricity.SOLUTION: The projected UV-concentrated photocatalyst hydrogen production device includes a hydrogen production unit, an artificial light concentrated light source unit, and a power adjustment unit. The hydrogen production unit includes a reaction tank and is used for catalytically decomposing water by artificial light to prepare hydrogen gas and oxygen gas. The artificial light concentrated light source unit includes a reflection assembly and several light emitting assemblies, the light emitting assemblies being used for emitting artificial light beams, and the reflection assembly being used for reflecting and concentrating the artificial light beams into the reaction tank. The power adjusting unit is used to provide the artificial light concentrated light source unit with electric energy.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the technical field of hydrogen production using renewable energy, and to a flood-light ultraviolet light-concentrating catalytic hydrogen production device, method and use. [Background technology]

[0002] Renewable energy sources, such as solar and wind power, generally exhibit significant fluctuations and are prone to grid imbalances when connected to the grid. Furthermore, grids exhibit fluctuations in power usage, such as peak and trough usage, which can lead to serious waste electricity issues due to discrepancies with grid demand. Storing waste electricity through energy storage and hydrogen production is currently the main development approach to addressing this issue. Hydrogen energy is widely applicable in industrial production, hydrogen-fueled vehicles, and other fields. Power supply and demand imbalances have led to peak-to-trough electricity price discrepancies and even negative electricity prices. Hydrogen produced from renewable energy sources is green hydrogen, which not only stores excess renewable energy electricity but also significantly reduces hydrogen gas production costs by taking advantage of the low and negative electricity prices of renewable energy electricity, trough electricity, and waste electricity.

[0003] The primary form of hydrogen production using renewable energy is electrolysis of water. Based on the electrolyte system, electrolysis can be divided into four types: alkaline electrolytic water (ALK), proton exchange membrane (PEM) electrolysis, solid oxide electrolysis (SOEC), and anion exchange membrane (AEM) electrolysis. Alkaline electrolysis is the most mature electrolysis technology, but it has not yet been widely adopted. The main limitations are the high maintenance costs for alkaline water, high power consumption, large site area, and the need for a stable power supply during the electrolysis process, which makes it less compatible with green energy. Proton exchange membrane electrolysis offers higher overall efficiency and is more adaptable to the variability of renewable energy sources. However, it is more promising than other electrolysis technologies due to its high catalyst and electrolysis tank material costs, particularly the precious metal loadings on the cathode and anode electrocatalysts, as well as the low efficiency and lifespan of the electrolysis tank.

[0004] Chinese Patent CN114751371A discloses a hydrogen production reaction system using concentrated solar energy for continuous-flow gas-phase water decomposition, which uses natural light as the light source and requires a large area to receive sunlight, resulting in increased site area and costs.Japanese Patent JP2018049632A discloses a method and apparatus for producing hydrogen using a double-concentrated solar energy catalyst, which produces hydrogen by concentrating sunlight twice through irradiation and double light, making it susceptible to interference and limitations due to the variability of sunlight, which further affects the effectiveness of hydrogen production. Summary of the Invention [Problem to be solved by the invention]

[0005] In response to the shortcomings of the prior art, the present invention aims to provide a flood-light ultraviolet light concentrating catalytic hydrogen production device, method, and use thereof. By storing electricity in the form of hydrogen energy and producing hydrogen using low-cost or negative-cost electricity such as renewable energy generation, bottom electricity, and waste electricity, the cost of hydrogen production can be significantly reduced. The power can be independently adjusted based on the fluctuation characteristics of various types of electricity, making it suitable for hydrogen production and energy storage using multiple types of electricity. [Means for solving the problem]

[0006] To achieve this object, the present invention provides the following technical solutions.

[0007] In a first aspect, the present invention provides a floodlight ultraviolet light-concentrating catalytic hydrogen production device, comprising: a hydrogen production unit, an artificial light-concentrating light source unit, and a power conditioning unit; the hydrogen production unit includes a reaction tank and is used to prepare hydrogen gas and oxygen gas by catalytically decomposing water with artificial light; the artificial light-concentrating light source unit includes a reflecting assembly and several light-emitting assemblies, the light-emitting assembly is used to emit artificial light rays, the reflecting assembly is used to reflect and concentrate the artificial light rays into the reaction tank; and the power conditioning unit is used to provide electrical energy to the artificial light-concentrating light source unit.

[0008] In the present invention, electrical energy is converted into artificial light of a single wavelength range, and hydrogen is produced by catalytically decomposing water with the artificial light in a concentrated form, thereby significantly reducing the volume and footprint of the hydrogen production vessel, far less than the volume and cost of conventional electrolytic water tanks. Furthermore, hydrogen is produced in a totally closed system within the reaction tank, reducing maintenance costs and improving the utilization efficiency of new energy.

[0009] In the present invention, the input end of the power conditioning unit is various low-price and negative-price electric energy with a certain variability, including but not limited to wind power electric energy, photovoltaic power electric energy, geothermal power electric energy, bottom electricity and waste electricity from the national power grid, etc.

[0010] In one preferred technical solution of the present invention, the floodlight ultraviolet light concentrating catalytic hydrogen production device further includes a control unit, which is electrically connected to the power adjustment unit and the artificial concentrating light source unit, respectively, and is used to feedback control the opening and closing and power adjustment of the light-emitting assembly according to the output power of the power adjustment unit.

[0011] The electric energy from the power conditioning unit is a constant voltage or a constant current.

[0012] In the present invention, the power conditioning unit uses low-cost and negative-cost electricity such as renewable energy, bottom electricity, and waste electricity, which always have large fluctuations. By connecting this electrical energy to a voltage regulator or current regulator, a constant voltage or constant current input power can be obtained, and the control unit independently adjusts the power of the artificial light-concentrating light source unit according to changes in the power output, thereby adapting to hydrogen production and energy storage using multiple types of electricity.

[0013] In one preferred technical solution of the present invention, the reflecting assembly includes a reflecting mirror located above the reaction tank and / or a reflecting wall plate located on the inner wall of the reaction tank.

[0014] The reflector is a plane reflector or a hyperbolic reflector.

[0015] The reflecting mirror and the reflecting wall panel are each independently made of polished aluminum alloy plate or aluminized ultra-clear glass.

[0016] In this invention, the reflecting mirror may be a smooth, highly reflective polished aluminum alloy plate or aluminum-plated ultra-transparent glass, and the reflective wall plate may also be a polished aluminum alloy plate or aluminum-plated ultra-transparent glass, and the reflecting mirror and the reflective wall plate are made of the same material. The reflecting mirror and the reflective wall plate in this invention have an ultraviolet reflectance of more than 90%, and reflect and concentrate the light beam into the reaction tank.

[0017] In the present invention, a transparent top plate is provided on the top of the reaction tank. The transparent top plate comprises a light-transmitting ultra-transparent glass. The reflecting mirror is fixed to the transparent top plate. The reaction tank in the present invention has a closed structure, and artificial light incident on the transparent top plate is reflected by each reflective wall plate, and the artificial light catalytically decomposes water in the raw material solution in the reaction tank to decompose and form hydrogen gas. Note that the structure of the reaction tank in the present invention is not limited, and it may be a rectangular tank body or a cylindrical tank body.

[0018] In one preferred technical solution of the present invention, several of the light emitting assemblies are mounted on the surface of the reflecting assembly or in the cavity of the reaction tank.

[0019] The light emitting assembly is an artificial cold light source.

[0020] The artificial cold light source includes an ultraviolet LED (Light-emitting Diode) chip and / or a blue light LED chip.

[0021] In the present invention, the light-emitting assembly may be mounted on the surface of the reflecting assembly or in the cavity of the reaction tank. Those skilled in the art can arrange the light-emitting assemblies on the surface of the reflecting assembly or in the cavity of the reaction tank in an array according to the actual situation. That is, the present invention provides the following aspects: When the light-emitting assembly is mounted on the surface of the reflecting assembly located at the top of the reaction tank, several light-emitting assemblies are arranged in an array on the surface of the reflecting mirror, and the artificial light from the light-emitting assemblies and the reflected artificial light enter the reaction tank through the transparent top plate; When the light-emitting assembly is fixed to the cavity of the reaction tank, several light-emitting assemblies are arranged in an array inside the chamber of the reaction tank and immerse in the raw material solution in the reaction tank; When the light-emitting assembly is fixed to the reflective wall plate on the inner wall of the reaction tank, several light-emitting assemblies are arranged in an array on the reflective wall plate and immerse in the raw material solution in the reaction tank.

[0022] In the present invention, after a stable power supply is provided to the light-emitting assembly by the power adjustment unit, the control unit adjusts the opening and closing of the light-emitting assembly and power adjustment according to changes in the power output power of the power supply, thereby adapting to fluctuations in the input power. At the same time, the reaction tank has a closed structure, and an artificial cold light source such as artificial ultraviolet light is used as the light source, which minimizes temperature fluctuations and realizes one-time light collection. Compared with the conventional process of directly using sunlight to catalyze hydrogen production, the present invention is not hindered or limited by the fluctuations of sunlight and does not require a large area to receive sunlight, thereby requiring a small footprint and low costs.

[0023] It should be noted that those skilled in the art can obtain a light emitting module by connecting multiple light emitting assemblies in series or in parallel according to the actual situation, and independently control the light emitting modules by a control unit, and selectively switch or open or close the entire light emitting module according to the change of the power supply output power.

[0024] In one preferred technical solution of the present invention, the artificial light-concentrating light source unit further includes a cooling module for dissipating heat from the light-emitting assembly and storing thermal energy.

[0025] The cooling module is used to provide a cooling form for the light-emitting assembly, including loop-connected cooling or immersion cooling, and to provide thermal energy to the reaction tank.

[0026] The present invention requires that the cooling module be adjusted according to the position of the light-emitting assembly, that is, the present invention provides the following two embodiments: (1) When the light-emitting assembly is located above the reaction tank, the cooling module is circulatingly connected to the light-emitting assembly to circulate and cool the light-emitting assembly; (2) When the light-emitting assembly is installed inside the reaction tank, the cooling module is similarly immersed inside the reaction tank 1 to immerse and cool the light-emitting assembly using water in the reaction tank. The cooling module in the present invention stores and collects heat generated when the light-emitting assembly emits light, and then transfers the heat to the reaction tank to heat and keep the water warm, which is advantageous for improving the reaction rate.

[0027] The present invention is not limited to a specific structure of the cooling module, and in order to help those skilled in the art better understand the overall technical solution and operation process of the present invention, the present invention provides the following specific structure of a related cooling module as an example. The cooling module includes a water cooling device, a water cooling pipe, and a heat storage device. The water cooling pipe is close to the light-emitting assembly, and the inlet and outlet ends of the water cooling pipe are connected to the water cooling device and the heat storage device, respectively. Cooling water flows through the water cooling pipe to cool the light-emitting assembly, and the heated cooling water enters the heat storage device to store heat. At the same time, the heat storage device is connected to a hydrogen production unit, and the hot water therein can be used as raw material for the hydrogen production unit, and the stored heat can also heat the raw material in the reaction tank to keep it warm.

[0028] It should be noted that the above description of the cooling module structure is not intended to further limit the scope of protection of the present invention. That is, any cooling module already disclosed in the prior art or not disclosed in the new art can be used in the present invention, and is not limited to the operating module having the above structure. Any cooling module that can achieve the same or similar function can be substituted. The technical solution obtained by substitution also falls within the scope of protection and disclosure of the present invention.

[0029] In one preferred technical solution of the present invention, the reaction tank is further provided with a water inlet and a gas outlet.

[0030] The hydrogen production unit further includes a water supply module connected to the water supply port.

[0031] The hydrogen production unit further includes a separation module including a drying device, a separation device, and a hydrogen storage device, which are connected in series and are connected to the gas outlet.

[0032] In the present invention, pure water is used as the raw material for producing hydrogen gas, and the pure water and the catalyst required for hydrogen production are fed into the reaction tank through the water inlet. The artificial light from the light-emitting assembly is focused in the reaction tank under the reflective action and high-magnification focusing action of the reflective assembly. Under the action of the artificial light and catalyst, the pure water is decomposed into a mixture of hydrogen gas and oxygen gas. The mixture is discharged from the gas outlet. A separation module is placed at the gas outlet to dry and separate the mixture of hydrogen gas and oxygen gas. The hydrogen gas is introduced into the solid hydrogen storage device for storage, and high-purity hydrogen gas and oxygen gas are obtained and collected respectively.

[0033] In a second aspect, the present invention provides a method for producing hydrogen using ultraviolet light concentrating catalytic projection technology, which uses the ultraviolet light concentrating catalytic hydrogen production device described in the first aspect, and includes providing electrical energy to an artificial concentrating light source unit by a power adjustment unit to drive the light-emitting assembly to emit artificial light rays, and reflecting and concentrating the artificial light rays into a reaction tank, so that the raw material solution in the reaction tank undergoes an artificial photocatalytic decomposition reaction to produce hydrogen gas.

[0034] In one preferred technical solution of the present invention, the wavelength of the artificial light is 280 to 492 nm, and may be, for example, 280 nm, 285 nm, 300 nm, 350 nm, 355 nm, 360 nm, 361 nm, 362 nm, 364 nm, 365 nm, 370 nm, 395 nm, 400 nm, 420 nm, 450 nm, 480 nm, or 492 nm, but is not limited to the listed values, and other unlisted values ​​within the numerical range also apply, and may be wavelength ranges such as 280 to 285 nm, 360 to 365 nm, 395 to 400 nm, and 400 to 492 nm.

[0035] The raw material solution contains pure water.

[0036] The temperature of the raw material solution is 60 to 90°C, and may be, for example, 60°C, 63°C, 65°C, 70°C, 75°C, 78°C, 80°C, 82°C, 85°C, 88°C, or 90°C, but is not limited to the listed values, and other values ​​not listed within the range of values ​​also apply.

[0037] The raw material solution further contains a catalyst.

[0038] The concentration of the catalyst is 10 to 50 mg / L, and may be, for example, 10 mg / L, 15 mg / L, 20 mg / L, 25 mg / L, 30 mg / L, 35 mg / L, 40 mg / L, 45 mg / L, or 50 mg / L, but is not limited to the listed values, and other values ​​not listed within the range also apply.

[0039] The present invention is not limited to a specific catalyst type, and any catalyst for hydrogen production familiar to those skilled in the art can be used, such as a strontium titanate catalyst or a titanium dioxide catalyst. To achieve better results, those skilled in the art can adjust the catalyst type and state according to the actual situation. For example, the catalyst may be nanoparticles, including but not limited to, spherical, near-spherical, cubic, plate-like, or polyhedral shapes. The catalyst may be doped with a metal element, including but not limited to, any one or a combination of at least two of Cu, Al, Au, Pd, and Pt. Metal-doped catalysts are familiar to those skilled in the art.

[0040] Furthermore, in the present invention, different catalysts can be selected according to the wavelength of the artificial light to participate in the photolysis hydrogen production. For example, the quantum efficiency of aluminum-doped strontium titanate in catalytic photolysis of water with ultraviolet light reaches 96% or more. Therefore, when the wavelength of the emitted ultraviolet light is in the range of 360-365 nm after the light-emitting assembly is energized, the strontium titanate catalyst can be used. The ultraviolet light is reflected and focused downward, and the intensity of the highly focused ultraviolet light is 100-2500 W / m 2 By this, the concentrated ultraviolet light beam enters the hydrogen production reaction tank through the transparent top plate of the reaction tank, and under the combined action of the ultraviolet light and the strontium titanate catalyst, the raw material solution is decomposed into hydrogen gas and oxygen gas, which escape from the water.

[0041] The pressure of the photolysis reaction is 0.1 to 0.3 MPa, and may be, for example, 0.10 MPa, 0.12 MPa, 0.15 MPa, 0.18 MPa, 0.20 MPa, 0.22 MPa, 0.23 MPa, 0.24 MPa, 0.25 MPa, 0.26 MPa, 0.28 MPa, or 0.30 MPa, but is not limited to the listed values, and other values ​​not listed within the numerical range also apply.

[0042] In one preferred technical solution of the present invention, the flooding ultraviolet light concentrating catalytic hydrogen production method further includes collecting the power output power of the power adjustment unit in real time, and feedback controlling the opening and closing and power adjustment of the light-emitting assembly according to fluctuations in the power output power.

[0043] In a third aspect, the present invention provides use of the floodlight ultraviolet light concentrating catalytic hydrogen production device described in the first aspect, wherein the floodlight ultraviolet light concentrating catalytic hydrogen production device is used for storing hydrogen gas energy such as renewable energy-generated electric energy, bottom electricity, and waste electricity.

[0044] The modularized flood light ultraviolet light collecting catalytic hydrogen production device according to the present invention can be applied to hydrogen production and energy storage of a variety of electric energy sources with varying characteristics, for example, low-cost hydrogen production and energy storage of renewable energy-generated electric energy such as wind power, solar power, and geothermal power, as well as low-cost and negative-price electricity such as bottom electricity and waste electricity.

[0045] The numerical ranges described in the present invention include not only the recited point values ​​but also any point values ​​between the recited numerical ranges that are not recited, and for the sake of space and clarity, the present invention does not exhaustively recite the specific point values ​​included in the ranges.

[0046] The system refers to an equipment system, a device system, or a production device. [Effects of the Invention]

[0047] Compared with the prior art, the beneficial effects of the present invention are as follows: The flood light ultraviolet light concentrating catalytic hydrogen production device, method and use according to the present invention convert electrical energy into artificial light of a single wavelength range and use the concentrated artificial light to catalytically decompose water to produce hydrogen, thereby significantly reducing the volume and footprint of the hydrogen production vessel, storing low-cost and even negative-cost electricity in the form of hydrogen gas energy, significantly reducing the cost of hydrogen production, and independently adjusting the light source power according to the fluctuation characteristics of various types of electricity, making it suitable for hydrogen production and energy storage using renewable energy power generation, bottom electricity and waste electricity. [Brief explanation of the drawings]

[0048] [Figure 1] 1 is a structural schematic diagram of a projected ultraviolet light collecting catalytic hydrogen production device according to Example 1 of the present invention. [Figure 2] 1 is a structural schematic diagram of a light-emitting assembly according to Example 1 of the present invention. [Figure 3] FIG. 10 is a structural schematic diagram of a projected ultraviolet light collecting catalytic hydrogen production device according to Example 2 of the present invention. [Figure 4] FIG. 4 is a structural schematic diagram of a light-emitting assembly according to Example 2 of the present invention. [Explanation of symbols]

[0049] 1: Reaction tank; 2: Reflector; 3: Chip; 4: Water inlet; 5: Gas outlet; 6: Transparent top plate; 7: Pure water. DETAILED DESCRIPTION OF THE INVENTION

[0050] In the description of the present invention, the orientations and positional relationships indicated by terms such as "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are based on the orientations and positional relationships shown in the drawings and are intended merely to facilitate and simplify the description of the present invention. They do not indicate or suggest that the referenced devices or elements must have a specific orientation or be configured and operated in a specific orientation. Therefore, they should not be understood to limit the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more than two.

[0051] In the description of the present invention, the terms "provide," "connect," and "couple" should be understood in a broad sense unless otherwise clearly defined or limited. For example, they may refer to a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention depending on the specific circumstances.

[0052] The technical solution of the present invention will be further described below by specific embodiments in conjunction with the drawings.

[0053] In one specific embodiment, the present invention provides a flood-light ultraviolet light-concentrating catalytic hydrogen production device, which includes a hydrogen production unit, an artificial light-concentrating light source unit, and a power conditioning unit, wherein the hydrogen production unit includes a reaction tank 1 and is used to prepare hydrogen gas and oxygen gas by catalytically decomposing water with artificial light, the artificial light-concentrating light source unit includes a reflecting assembly and several light-emitting assemblies, the light-emitting assembly is used to emit artificial light, and the reflecting assembly is used to reflect and concentrate the artificial light into the reaction tank 1, and the power conditioning unit is used to provide electrical energy to the artificial light-concentrating light source unit.

[0054] The flood light ultraviolet light concentrating catalytic hydrogen production device further includes a control unit, which is electrically connected to the power adjustment unit and the artificial concentrating light source unit, respectively, and which feedback-controls the opening and closing of the light emitting assembly and power adjustment according to the output power of the power adjustment unit.In the present invention, since various low-cost and low-cost electricity is used in the power adjustment unit and there is always a large fluctuation, such electrical energy can be connected to a voltage regulator or a current regulator to obtain an input power of constant voltage / constant current, and the control unit independently adjusts the power of the artificial concentrating light source unit according to changes in the power output power, thereby adapting to hydrogen production and energy storage using multiple types of renewable energy power generation, bottom electricity, and waste electricity.

[0055] The reflecting assembly includes a reflecting mirror 2 located above the reaction tank 1 and / or a reflecting wall plate located on the inner wall of the reaction tank 1. The reflecting mirror 2 is a flat reflecting mirror or a hyperbolic reflecting mirror. The reflecting mirror 2 and the reflecting wall plate are independently made of polished aluminum alloy plate or aluminum-plated ultra-transparent glass. The reflecting mirror 2 and the reflecting wall plate in the present invention are made of the same material. The reflecting mirror 2 and the reflecting wall plate in the present invention have an ultraviolet reflectance of more than 90%, and reflect and concentrate the light beam into the reaction tank 1.

[0056] In the present invention, a transparent top plate 6 is provided on the top of the reaction tank 1. The transparent top plate 6 comprises a light-transmitting ultra-transparent glass. The reflecting mirror 2 is fixed to the transparent top plate 6. The reaction tank 1 in the present invention has a closed structure, and the artificial light is reflected by each reflective wall plate to catalytically decompose water in the raw material solution in the reaction tank 1 to form hydrogen gas. The structure of the reaction tank 1 in the present invention is not limited, and it may be a rectangular tank body or a cylindrical tank body.

[0057] Several light-emitting assemblies are distributed on the surface of the reflector assembly or in the cavity of the reaction tank 1. The light-emitting assembly is a cold light source. The cold light source includes ultraviolet LED chips 3 and / or blue light LED chips 3. The light-emitting assemblies may be arranged in a rectangular array, a three-dimensional array, or a circular array. Those skilled in the art can obtain a light-emitting module by connecting multiple light-emitting assemblies in series or parallel according to the actual situation, and independently control the light-emitting modules using a control unit to selectively switch or open the entire light-emitting module according to changes in the power output of the power source. The present invention does not specifically limit the circuit control form of the light-emitting assembly. To help those skilled in the art better understand the overall technical solution and operation process of the present invention, the present invention provides an example of a circuit control form of a related light-emitting module. In the present invention, a single LED chip 3 has a power of 10-20W and an area of ​​1-5cm. 2 The steady-state voltage of a single LED chip 3 is between 3 and 6V, several single LED chips 3 are connected in series or in parallel to obtain a light-emitting lamp group, each of which has a power of 1 to 2kW and a voltage of 24 to 36V, and several light-emitting lamp groups are connected in series or in parallel to obtain a light-emitting module, whose power is between 0.1 to 0.2MW and a voltage of 220 to 380V. The control unit independently controls the light-emitting lamp groups and the light-emitting modules, collects the power output power of the power supply in real time, and selectively opens and closes the light-emitting lamp groups and / or the light-emitting modules according to changes in the power output power to adapt to fluctuations in input power.

[0058] In some embodiments, when the light-emitting assembly is mounted on the surface of the reflecting assembly located at the top of the reaction tank 1, several light-emitting assemblies are arranged in an array on the surface of the reflecting mirror 2, and the artificial light beams from the light-emitting assemblies and the reflected artificial light beams enter the reaction tank 1 through the transparent top plate 6.

[0059] In some embodiments, when the light emitting assembly is fixed to the inner cavity of the reaction tank 1, several light emitting assemblies are arranged in an array inside the chamber of the reaction tank 1 and immersed in the raw material solution in the reaction tank 1.

[0060] In some embodiments, when the light-emitting assembly is fixed to a reflective wall plate on the inner wall of the reaction tank 1, several light-emitting assemblies are arranged in an array on the reflective wall plate and immersed in the raw material solution in the reaction tank 1.

[0061] In some embodiments, the artificial light-concentrating light source unit further includes a cooling module for dissipating heat from the light-emitting assembly and storing thermal energy, and the cooling module is used to provide thermal energy to the reaction tank 1, and the cooling form for the light-emitting assembly includes circulating cooling or immersion cooling.

[0062] In the present invention, the cooling module needs to be adjusted according to the placement position of the light-emitting assembly. When the light-emitting assembly is installed on the surface of the reflector 2 above the reaction tank 1, the cooling module is circulatingly connected to the light-emitting assembly to circulate and cool the light-emitting assembly. (2) When the light-emitting assembly is installed inside the reaction tank 1, the cooling module is immersed inside the reaction tank 1 to immerse and cool the light-emitting assembly using the water in the reaction tank 1. The cooling module in the present invention stores the heat generated when the light-emitting assembly emits light, collects the heat, and then transfers it to the reaction tank 1 to heat and keep the water warm, which is advantageous for improving the reaction rate.

[0063] In some embodiments, the reaction tank 1 further includes a water inlet 4 and a gas outlet 5. The hydrogen production unit further includes a water supply module connected to the water inlet 4. The hydrogen production unit further includes a separation module. The separation module includes a drying device, a separation device, and a hydrogen storage device, which are connected in sequence to the gas outlet 5. In the present invention, pure water 7 is used as the raw material for producing hydrogen gas. The raw material and a catalyst required for hydrogen production are introduced into the reaction tank 1 through the water inlet 4. Artificial light from the light-emitting assembly is reflected by the reflecting assembly or focused at a high magnification to converge on the reaction tank 1. Under the influence of the artificial light and the catalyst, the pure water 7 is decomposed into a mixture of hydrogen and oxygen gases. The mixture is then discharged through the gas outlet 5. A separation module is disposed at the gas outlet 5 to dry and separate the mixture of hydrogen and oxygen gases. The hydrogen gas is then introduced into a solid-state hydrogen storage device for storage, and high-purity hydrogen and oxygen gases are obtained and collected, respectively.

[0064] In another specific embodiment, the present invention provides a method for producing hydrogen using the ultraviolet light concentrating catalytic projectile using the ultraviolet light concentrating catalytic hydrogen production apparatus described in one specific embodiment, which includes providing electrical energy to the artificial light concentrating light source unit by the power conditioning unit to drive the light-emitting assembly to emit artificial light, and reflecting and concentrating the artificial light into the reaction tank 1, so that the raw material solution in the reaction tank 1 undergoes a decomposition reaction under the action of a catalyst to produce hydrogen gas.

[0065] The artificial light has a wavelength of 280-492 nm, preferably an artificial ultraviolet ray having a wavelength of 360-365 nm. In the present invention, after the light-emitting assembly is energized, the artificial light is emitted and reflected, so that the artificial light is focused downward, and the intensity of the highly focused artificial light is 100-2500 W / m 2 The concentrated artificial light enters the hydrogen production reaction tank 1 through the transparent top plate 6 of the reaction tank 1, and under the action of the artificial light and catalyst, the raw material is decomposed into hydrogen gas and oxygen gas and escapes from the water.

[0066] The raw material solution contains pure water 7, and the temperature of the raw material solution is 60 to 90° C. The raw material solution further contains a catalyst, and the concentration of the catalyst is 10 to 50 mg / L. The pressure of the photolysis reaction is 0.1 to 0.3 MPa.

[0067] In some embodiments, the flooding ultraviolet light concentrating catalytic hydrogen production method further includes collecting the power supply output power of the power conditioning unit in real time, and feedback controlling the opening and closing and power adjustment of the light-emitting assembly according to fluctuations in the power supply output power.

[0068] Example 1 This embodiment provides a flood-light ultraviolet concentrating catalytic hydrogen production device, which includes a power conditioning unit, a hydrogen production unit, and an artificial concentrating light source unit. The power conditioning unit receives and conditions low-cost bottom electricity generated by solar power, and then provides electrical energy to the artificial concentrating light source unit.

[0069] The hydrogen production unit includes a reaction tank 1. As shown in Figure 1, the reaction tank 1 is rectangular, measuring 10m x 10m in cross section, made of stainless steel, 5mm thick, and 0.75m deep. The inner wall is equipped with aluminum-plated ultra-transparent glass as a reflective wall panel, a water inlet 4 at the bottom of the side wall, and a gas outlet 5 at the top of the side wall. A transparent top panel 6 is installed at the top of the reaction tank 1, and the ultra-transparent glass is used as a light-transmitting window, forming a closed structure. Pure water 7 is poured into the reaction tank 1, and its volume is two-thirds of the volume of the reaction tank 1. The temperature is 90°C. A strontium titanate catalyst is also added to the pure water 7, with a dispersion concentration of 50mg / L, and the strontium titanate catalyst is aluminum-doped polyhedral nanoparticles.

[0070] The artificial focusing light source unit is located at the top of the reaction tank 1. The artificial focusing light source unit includes a rotating hyperbolic reflecting mirror 2 with a diameter of 10 m, and is fixed to a transparent top plate 6 at the top of the reaction tank 1. As shown in Figure 2, 10,000 artificial ultraviolet LED chips 3 with a power of 20 W and emitting light of 360 to 365 nm are provided inside the reflecting mirror 2 and distributed in an array. A water cooling device for cooling the LED chips 3 is provided inside the rotating hyperbolic reflecting mirror 2, and is connected to a water supply port 4 of the reaction tank 1 by a water cooling pipe.

[0071] When hydrogen is produced using the floodlight ultraviolet concentrating catalytic hydrogen production device of this embodiment, after the artificial concentrating light source unit is energized by the power conditioning unit, the artificial light from the LED lamp array is all artificial ultraviolet light, which, under the focusing effect of the hyperbolic reflecting mirror 2, passes through the transparent top plate 6 and enters the pure water 7 in which the strontium titanate catalyst is dispersed. Under the effect of the artificial ultraviolet light, the water is decomposed into hydrogen gas and oxygen gas, which escape from the water. After being dried and separated, the hydrogen gas and oxygen gas are either compressed and stored or introduced into a solid-state hydrogen storage device for storage.

[0072] In this embodiment, low-cost solar power is used to generate artificial ultraviolet light in a specific wavelength range using ultraviolet LED chips 3. The ultraviolet light-emitting array is placed inside a rotating hyperbolic reflector 2, and the artificial ultraviolet light from the ultraviolet light source is concentrated in a closed reaction tank 1 containing a strontium titanate catalyst under the high-magnification focusing action of the hyperbolic reflector 2. Pure water 7 is then decomposed into a mixture of hydrogen and oxygen gases under the high-magnification ultraviolet light and the catalytic action of the strontium titanate. Hydrogen gas energy storage utilizes 80% to 90% of solar power energy, allowing solar power, which is highly variable due to the influence of sunlight, to be efficiently stored as hydrogen gas energy.

[0073] Example 2 This embodiment provides a flood ultraviolet light concentrating catalytic hydrogen production device, which includes a power conditioning unit, a hydrogen production unit, and an artificial concentrating light source unit. Negative-price waste electricity generated by wind power is accessed by the power conditioning unit, and after conditioning, electrical energy is provided to the artificial concentrating light source unit.

[0074] The hydrogen production unit includes a reactor tank 1. As shown in Figure 3, the reactor tank 1 is a cylindrical structure with a diameter of 30 m, made of stainless steel, a wall thickness of 20 mm, and a depth of 1.5 m. The inner wall of the reactor tank 1 is lined with micro-arc oxidized aluminum-plated ultra-transparent glass. A water inlet 4 is provided at the bottom of the side wall, and a gas outlet 5 is provided at the top of the side wall. A transparent top plate 6 is provided at the top of the reactor tank 1, made of ultra-transparent glass and reinforced with aluminum ribs. A light-transmitting window also serves as a closed structure. Pure water 7 is poured into the reactor tank 1, occupying two-thirds of the volume and at a temperature of 60°C. A strontium titanate catalyst is also added to the pure water 7, with a dispersion concentration of 40 mg / L. The strontium titanate catalyst is aluminum and cobalt-doped nanoparticles.

[0075] The artificial light-collecting light source unit is located at the top of the reaction tank 1. The artificial light-collecting light source unit includes a flat reflecting mirror 2 with a diameter of 30 mm, and is fixed to a transparent top plate 6 at the top of the reaction tank 1. As shown in Figure 4, 100,000 ultraviolet LED chips 3 with a power of 10 W and emitting light of 280 to 365 nm are provided inside the flat reflecting mirror 2 and distributed in an array. A water cooling device for cooling the LED chips 3 is provided inside the flat reflecting mirror 2, and is connected to a water supply port 4 of the reaction tank 1 by a water-cooled pipe.

[0076] When hydrogen is produced using the floodlight ultraviolet concentrating catalytic hydrogen production device of this embodiment, after the artificial concentrating light source unit is energized by the power adjustment unit, the artificial light rays from the LED lamp array are all artificial ultraviolet rays, which are reflected by the flat reflecting mirror 2 and pass through the transparent top plate 6 to enter the pure water 7 in which the strontium titanate catalyst is dispersed. Under the catalysis of the artificial ultraviolet rays, the pure water 7 is decomposed into hydrogen gas and oxygen gas, which escape from the water. After the hydrogen gas and oxygen gas are dried and separated, they are either compressed and stored or introduced into a solid-state hydrogen storage device for storage.

[0077] In this embodiment, waste electricity from wind power generation, which is sold at negative prices during periods of excess supply, is used to generate artificial ultraviolet light in a specific wavelength range using ultraviolet LED chips 3. The ultraviolet light-emitting array is placed inside a flat reflector 2, and the artificial ultraviolet light from the ultraviolet light source is reflected and collected in a closed reaction tank 1 containing a strontium titanate catalyst. Pure water 7 is then decomposed into a mixture of hydrogen and oxygen gases under the catalytic action of the artificial ultraviolet light and strontium titanate. Hydrogen gas energy storage utilizes 80% of waste wind power electricity, allowing for efficient storage of waste wind power electricity, which is subject to significant fluctuations due to wind power and peak and bottom electricity demands, as hydrogen energy.

[0078] Example 3 This embodiment provides a flood-light ultraviolet light concentrating catalytic hydrogen production device. The difference from the first embodiment is that it further includes a control unit, which is electrically connected to the power adjustment unit and the artificial light source unit, and controls the LED lamp array to adjust the light output according to the power supply power from the power adjustment unit under the control of the control unit, so that it can convert solar power with a maximum output of 0.2 MW into artificial ultraviolet light and use the artificial light to catalytically decompose water to produce hydrogen. The remaining structure and parameters are the same as those of the first embodiment.

[0079] Example 4 This embodiment provides a flood-light ultraviolet light concentrating catalytic hydrogen production device. The difference from embodiment 2 is that it further includes a control unit, which is electrically connected to the power adjustment unit and the artificial concentrating light source unit, and controls the LED lamp array to adjust its light output according to the power supply power from the power adjustment unit under the control of the control unit, making it suitable for converting waste wind power with a maximum power of 1 MW into artificial ultraviolet light for photocatalytic decomposition to produce hydrogen at low cost. The remaining structure and parameters are the same as embodiment 2.

[0080] Example 5 This embodiment provides a flood-light ultraviolet light-concentrating catalytic hydrogen production device. The difference from the third embodiment is that the LED chips 3 of the artificial concentrating light source unit are arranged in a three-dimensional array, fixed in the center of the inner cavity of the reaction tank 1, and immersed in water to dissipate heat from the UV LED chips 3 in the water by immersion cooling; the remaining structure and parameters are the same as those of the third embodiment.

[0081] Example 6 This embodiment provides a flood-light ultraviolet light concentrating catalytic hydrogen production device. The difference from the third embodiment is that the LED chips 3 of the artificial concentrating light source unit are arranged in a rectangular array and fixed to the inner wall of the reaction tank 1. The remaining structure and parameters are the same as those of the third embodiment.

[0082] Example 7 This embodiment provides a flood-light ultraviolet light-concentrating catalytic hydrogen production device, which includes a power conditioning unit, a hydrogen production unit, an artificial light-concentrating light source unit, and a control unit. Low-cost electricity from the bottom of the national power grid is accessed by the power conditioning unit, and after conditioning, electrical energy is provided to the artificial light-concentrating light source unit. The hydrogen production unit includes a reaction tank 1, the artificial light-concentrating light source unit is located on top of the reaction tank 1, and the control unit is electrically connected to the power conditioning unit and the artificial light-concentrating light source unit, respectively.

[0083] The reactor 1 is a cylindrical structure with a diameter of 30 m, made of stainless steel, a wall thickness of 20 mm, and a depth of 1.5 m. The inner wall is made of micro-arc oxidized mirror aluminum, a water inlet 4 at the bottom of the side wall, and a gas outlet 5 at the top of the side wall. A transparent top plate 6 is installed at the top of the reactor 1, made of ultra-transparent glass reinforced with an aluminum alloy rib plate, and a light-transmitting window, forming a closed structure. Pure water 7 is poured into the reactor 1, occupying two-thirds of the volume and heated to 70°C. A strontium titanate catalyst is also added to the pure water 7, with a dispersion concentration of 30 mg / L. The strontium titanate catalyst is a polyhedral nanoparticle complex doped with aluminum, cobalt, and rhodium.

[0084] The artificial concentrated light source unit includes a flat reflector 2 with a diameter of 30 m, and 100,000 LED chips 3 with a power of 10 W (artificial projected ultraviolet light with an emission wavelength range of 350 to 405 nm) are provided inside the flat reflector 2 in an array. A water cooling device is provided inside the rotating hyperbolic reflector 2, and is connected to the water supply port 4 of the reaction tank 1 by a water cooling pipe.

[0085] When hydrogen is produced using the UV flood light concentrating catalytic hydrogen production apparatus of this embodiment, the power conditioning unit turns on the artificial concentrating light source unit, causing the LED lamp array to emit artificial UV light, which is reflected by the rotating hyperbolic reflecting mirror 2 and passes through the transparent top plate 6 to impinge on the pure water 7 with the strontium titanate catalyst dispersed therein. The artificial UV light catalyzes the pure water 7 to decompose into hydrogen gas and oxygen gas, which escape from the water. The hydrogen gas and oxygen gas are then dried and separated, and either compressed and stored or introduced into a solid-state hydrogen storage device for storage. The LED lamp array, under the control of the power conditioning unit, adjusts its light emission power according to the power supply power, converting low-cost bottom electricity with a maximum power of 1 MW into artificial UV light to catalytically decompose water with artificial light to produce hydrogen.

[0086] In this embodiment, low-cost bottom electricity is used to generate artificial UV light in a specific wavelength range using LED light-emitting chips 3, and an LED lamp light-emitting array is placed inside a rotating hyperbolic reflector 2. The artificial UV light from the light-emitting array is reflected and collected in a closed reaction tank 1 containing a strontium titanate catalyst, and pure water 7 is decomposed into a mixture of hydrogen and oxygen gases under the catalytic action of the artificial UV light and strontium titanate. Hydrogen gas energy storage can utilize 80% of the electrical energy from low-cost bottom electricity to convert low-cost bottom electricity into high-cost hydrogen energy.

[0087] Example 8 This embodiment provides a flood-light ultraviolet light-concentrating catalytic hydrogen production device, which includes a power conditioning unit, a hydrogen production unit, an artificial light-concentrating light source unit, and a control unit. The power generated by offshore wind and wave power near a coastal island is accessed by the power conditioning unit, adjusted, and then provided to the artificial light-concentrating light source unit. The hydrogen production unit includes a reaction tank 1, the artificial light-concentrating light source unit is located on top of the reaction tank 1, and the control unit is electrically connected to the power conditioning unit and the artificial light-concentrating light source unit, respectively.

[0088] The reactor 1 is a rectangular structure with a cross section of 20m x 10m, made of stainless steel, 15mm thick, and 1.2m deep. The inner wall is made of micro-arc oxidized mirror aluminum, with a water inlet 4 at the bottom of the side wall and a gas outlet 5 at the top of the side wall. A transparent top plate 6 is installed on the top of the reactor 1, made of ultra-transparent glass and also serving as a light-transmitting window, forming a closed structure. Pure water 7 is poured into the reactor 1, occupying four-fifths of the volume and at a temperature of 80°C. A strontium titanate catalyst is also added to the pure water 7, with a dispersion concentration of 20mg / L. The strontium titanate catalyst is a nanoparticle complex doped with aluminum, cobalt, and platinum.

[0089] The artificial light source unit includes a 20m x 10m flat reflector 2, inside which are provided 500,000 20W LED chips 3 (artificial projected ultraviolet light with an emission wavelength range of 300-492nm) distributed in an array. A water cooling device is provided within the rotating hyperbolic reflector 2, and is connected to the water supply port 4 of the reaction tank 1 by a water cooling pipe.

[0090] When hydrogen is produced using the UV floodlight concentrating catalytic hydrogen production device of this embodiment, the power conditioning unit energizes the artificial concentrating light source unit, causing the LED lamp array to emit artificial UV light, which is reflected by the rotating hyperbolic reflecting mirror 2 and passes through the transparent top plate 6 to impinge on the pure water 7 containing the dispersed strontium titanate catalyst. The artificial UV light catalyzes the pure water 7 into hydrogen gas and oxygen gas, which escape from the water. The hydrogen gas and oxygen gas are then dried and separated, after which they are compressed and stored, or introduced into a solid-state hydrogen storage device for storage. The LED lamp array adjusts its light output according to the power supply power controlled by the power conditioning unit under the control of the control unit, and is suitable for converting electrical energy from offshore wind and wave power generation with a maximum power of 10 MW into artificial UV light to catalytically decompose water with the artificial light to produce hydrogen.

[0091] In this embodiment, LED light-emitting chips 3 generate artificial ultraviolet light in a specific wavelength range using electricity generated by offshore wind and wave power near a coastal island, and an ultraviolet light-emitting array is placed inside a rotating hyperbolic reflector 2. The artificial ultraviolet light from the array is reflected and collected in a closed reaction tank 1 containing a strontium titanate catalyst, and pure water 7 is decomposed into a mixture of hydrogen and oxygen gases under the catalytic action of the artificial ultraviolet light and strontium titanate. Hydrogen gas energy storage utilizes 80% of the island's wind and wave power generation, making it possible to efficiently store the highly variable electrical energy generated by offshore power as hydrogen energy.

[0092] The present invention uses concentrated artificial light to catalytically decompose water and produce hydrogen, significantly reducing the volume and footprint of the hydrogen production vessel and making it far smaller than the volume and cost of an electrolytic water tank. Furthermore, the system uses only pure water (7) as a raw material, operates in a fully enclosed manner, reduces maintenance costs, achieves a total hydrogen production efficiency of 60-70%, and produces hydrogen using low-cost electrical energy, significantly reducing the cost of hydrogen production. The temperature inside the reaction tank (1) is low and easy to control, enabling modular operation and reducing the footprint. Furthermore, the system independently adjusts the light source power according to the fluctuation characteristics of electrical energy, making it suitable for hydrogen production and energy storage using electricity with various fluctuation characteristics, particularly hydrogen gas energy storage using low-cost or negative-cost electricity such as renewable energy, bottom electricity, and waste electricity.

[0093] The applicant declares that the above content is only a specific embodiment of the present invention, and the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any modifications or replacements that can be easily conceived within the technical scope disclosed in the present invention are all included in the protection scope and disclosure scope of the present invention.

Claims

1. The system includes a hydrogen production unit, an artificial concentrated light source unit, a control unit, and a power adjustment unit; The hydrogen production unit includes a reaction tank and is used to prepare hydrogen gas and oxygen gas by catalytically decomposing water with artificial light; the artificial light-collecting light source unit includes a reflecting assembly and several light-emitting assemblies, the several light-emitting assemblies being chips arranged in an array, and used to emit artificial light; the reflecting assembly includes a reflecting mirror located above the reaction tank, the reflecting mirror being a hyperbolic reflecting mirror, and used to reflect and collect the artificial light into the reaction tank; the power adjusting unit is used to provide electrical energy to the artificial light-concentrating light source unit, the control unit is electrically connected to the power adjusting unit and the artificial light-concentrating light source unit respectively, and the control unit is used to feedback-control the opening / closing and power adjustment of the light-emitting assembly according to the output power of the power adjusting unit; A hydrogen production device using a catalytic converter and UV light collection technology.

2. The electric energy provided by the power conditioning unit is a constant voltage or a constant current.

2. The hydrogen production device according to claim 1, wherein the hydrogen production device uses a catalyst and an ultraviolet light collector.

3. The reflective assembly further includes a reflective wall panel located on an interior wall of the reaction tank; The reflecting mirror and the reflecting wall panel are each independently a polished aluminum alloy plate or an aluminum-plated ultra-transparent glass; 2. The hydrogen production device according to claim 1, wherein the hydrogen production device uses a catalyst and an ultraviolet light collector.

4. Some of the light emitting assemblies are provided on the surface of the reflecting assembly or in the cavity of the reaction tank; the light emitting assembly is an artificial cold light source; The artificial cold light source includes an ultraviolet LED chip and / or a blue light LED chip; 2. The hydrogen production device according to claim 1, wherein the hydrogen production device uses a catalyst and an ultraviolet light collector.

5. the artificial light-collecting light source unit further includes a cooling module for dissipating heat from the light-emitting assembly and storing thermal energy; the cooling module is used to provide a cooling form for the light-emitting assembly including a loop-connected cooling or an immersion cooling, and to provide thermal energy to the reaction tank; 2. The hydrogen production device according to claim 1, wherein the hydrogen production device uses a catalyst and an ultraviolet light collector.

6. The reaction tank is further provided with a water inlet and a gas outlet, The hydrogen production unit further includes a water supply module connected to the water supply port; The hydrogen production unit further includes a separation module including a drying device, a separation device, and a hydrogen storage device, which are connected in series and are connected to the gas outlet.

2. The hydrogen production device according to claim 1, wherein the hydrogen production device uses a catalyst and an ultraviolet light collector.

7. A method for producing hydrogen using the projected ultraviolet light concentrating catalytic hydrogen production device according to any one of claims 1 to 6, comprising: providing electrical energy to the artificial light-collecting light source unit by the power conditioning unit to drive the light-emitting assembly to emit artificial light, and reflecting and collecting the artificial light into the reaction tank, so that the raw material solution in the reaction tank undergoes an artificial photocatalytic decomposition reaction to produce hydrogen gas; A method for producing hydrogen using a catalyst by concentrating ultraviolet light projected from the source.

8. The wavelength of the artificial light is 280 to 492 nm, the raw material solution contains pure water, The temperature of the raw material solution is 60 to 90°C, the raw material solution further contains a catalyst; The catalyst has a concentration of 10 to 50 mg / L; The pressure of the artificial photocatalytic decomposition reaction is 0.1 to 0.3 MPa; 8. The method for producing hydrogen using a catalyst by concentrating ultraviolet light projected from a light source according to claim 7.

9. further comprising collecting the power supply output power of the power adjustment unit in real time, and feedback-controlling the opening / closing and power adjustment of the light emitting assembly according to fluctuations in the power supply output power; 8. The method for producing hydrogen using a catalyst by concentrating ultraviolet light projected from a light source according to claim 7.

10. Use of the flood light ultraviolet light collecting catalytic hydrogen production device according to any one of claims 1 to 6, The flood light ultraviolet light collecting catalytic hydrogen production device is used for storing hydrogen gas energy from renewable energy generation electric energy, bottom electricity, and waste electricity; Use of a flood-light ultraviolet light collecting catalytic hydrogen production device characterized by the above.

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