Solar energy full spectrum frequency division utilization hydrogen production and storage seawater desalination integrated device

Abstract

The invention discloses a hydrogen production, hydrogen storage and seawater desalination integrated device capable of utilizing solar energy in a full-spectrum frequency division manner. The hydrogen production, hydrogen storage and seawater desalination integrated device sequentially comprises a photocatalytic hydrogen production system, a catalytic hydrogenation hydrogen storage system and a thermal evaporation seawater desalination system from inside to outside, the photocatalytic hydrogen production system is used for absorbing ultraviolet light and part of visible light to catalyze and decompose water to produce hydrogen, and part of visible light and infrared light wave bands are absorbed and converted into heat by a photocatalyst and a photocatalytic solution; the catalytic hydrogenation hydrogen storage system is used for absorbing unutilized partial visible light and infrared light wave bands, converting the unutilized partial visible light and infrared light wave bands into heat, and transferring waste heat generated by the photocatalytic hydrogen production system to the catalytic hydrogenation hydrogen storage system; hydrogen prepared through photocatalysis serves as a hydrogen source for hydrogenation and is transferred to a catalytic hydrogenation hydrogen storage system, full-spectrum frequency-division hydrogen preparation and storage of sunlight are achieved, and meanwhile hydrogen preparation and storage integration is achieved; the thermal evaporation seawater desalination system utilizes waste heat of the catalytic hydrogenation hydrogen storage system to drive seawater evaporation to prepare fresh water, and efficient solar full-spectrum efficient utilization is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of full-spectrum solar energy utilization, hydrogen energy and seawater desalination, and specifically relates to an integrated hydrogen production, storage and seawater desalination device that utilizes full-spectrum solar energy in a divided frequency manner. Background Art

[0002] Hydrogen has many advantages such as being green, low-carbon, abundant in sources, renewable, and having high energy density. It is known as the most promising secondary energy source in the 21st century and is of great significance for building a clean, low-carbon, safe, and efficient energy system. Regarding the preparation of hydrogen, the most promising feasible paths currently include solar photolysis of water, wind power, or photovoltaic power generation driven electrolysis of water. Among them, the solar photolysis water system is simple, has a mild reaction, and requires little equipment investment. Hydrogen can be produced simply by irradiating a liquid suspension system of catalyst powder with abundant sunlight, without the need for high-cost electrolyzers, photovoltaic power generation, and wind power equipment. At the same time, it can avoid the slow mass transfer process of water on the limited electrode surface in the electrolysis water system, making it the best and ideal way to produce green hydrogen at low cost.

[0003] Sunlight wavelengths primarily range from 200 to 2500 nm, with the ultraviolet region (<400 nm) accounting for only 4.6%, the visible region (400–700 nm) for 43.1%, and the infrared region (700–1000 nm) for 26.4%. Since Fujishima and Honda discovered water splitting on a TiO2 photoelectrode in 1972, photocatalytic water splitting has garnered widespread attention, leading to the development of numerous photocatalysts. Most photocatalysts are composed of semiconductor materials, which absorb incident light to generate electron-hole pairs. If the carriers meet the required energy requirements, they migrate to the surface to undergo redox reactions. While semiconductor materials exhibit many excellent optical and catalytic properties, their inherent band structures and the matching requirements for water redox reactions result in significant underutilization of visible and even infrared light. This is one of the main reasons for the current low efficiency of photocatalytic hydrogen production and underscores the difficulty of achieving high solar energy utilization through a single photocatalytic approach. It is worth noting that infrared light, which accounts for 54% of the solar spectrum energy, and part of the visible light can often be released in the form of heat energy through photothermal conversion, but photocatalysis has difficulty in efficiently utilizing this part of the heat energy. In order to achieve efficient utilization of solar energy, it is necessary to design the frequency division utilization of the full spectrum of solar energy in a targeted manner. It is worth noting that heat can effectively reduce the energy barrier of catalytic hydrogenation and hydrogen storage reactions, and accelerate the efficiency of hydrogen storage. At the same time, studies have shown that heat can also efficiently drive the evaporation and desalination of seawater. Therefore, photocatalysis, hydrogen storage and seawater desalination can be organically coupled, and a reasonable design can be made to achieve a synergistic match between the three, to carry out frequency division utilization of the full spectrum of solar energy, and to achieve efficient utilization of solar energy. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the deficiencies in the above-mentioned prior art and provide an integrated hydrogen production, storage and seawater desalination device that utilizes the full spectrum of solar energy in a divided manner, so as to solve the technical problems of efficient utilization of the full spectrum of solar energy, organic pollution treatment and seawater desalination.

[0005] The present invention adopts the following technical solutions: The integrated hydrogen production, storage and seawater desalination device utilizes the full spectrum of solar energy, and includes, from the inside out, a photocatalytic hydrogen production system, a catalytic hydrogenation and storage system, and a thermal evaporation seawater desalination system. The photocatalytic hydrogen production system is used to absorb ultraviolet light and part of visible light to catalytically decompose water to produce hydrogen. Part of the visible light and infrared light bands are absorbed by the photocatalyst and photocatalytic solution and converted into heat; The catalytic hydrogenation and storage system is used to absorb the unused portion of visible light and infrared light bands and convert them into heat, and transfer the waste heat generated by the photocatalytic hydrogen production system to the catalytic hydrogenation and storage system, so that the remaining solar heat and the waste heat of the photocatalytic hydrogen production system can synergistically drive the catalytic hydrogenation and storage system; The hydrogen produced by photocatalysis is transferred to the catalytic hydrogenation and storage system as the hydrogen source for hydrogenation, realizing the full spectrum frequency division of sunlight for hydrogen production and storage, and realizing the integration of hydrogen production and storage; The thermal evaporation seawater desalination system uses the waste heat from the catalytic hydrogenation and hydrogen storage system to drive the evaporation of seawater to produce fresh water, realizing the full utilization of the full spectrum of solar energy.

[0006] Preferably, a solar light source is provided above the photocatalytic hydrogen production system.

[0007] Preferably, the hydrogen produced by the photocatalytic hydrogen production system serves as the hydrogen source for the hydrogen storage system.

[0008] Preferably, it is characterized in that the photocatalytic hydrogen production system absorbs and utilizes ultraviolet light and part of the visible light band of sunlight.

[0009] Preferably, a gas purge port is provided on the upper side of the catalytic hydrogenation and hydrogen storage system.

[0010] Preferably, the catalyst in the catalytic hydrogenation and hydrogen storage system is a hydrogenation catalyst with a photothermal effect, and the hydrogen storage carrier is an unsaturated aldehyde, ketone, alkynyl, alkenyl or aromatic benzene ring.

[0011] Preferably, the full spectrum frequency division utilization is to use ultraviolet light and part of visible light for photocatalytic hydrogen production, and part of visible light and infrared light for photothermal conversion, while driving the evaporation and desalination of seawater.

[0012] Preferably, a condensation module is provided above the thermal evaporation seawater desalination system, one end of the condensation module is connected to a fresh water collection tank for draining the generated fresh water, and the fresh water is output as a product from the output port.

[0013] Preferably, the photocatalytic hydrogen production system, the catalytic hydrogenation and hydrogen storage system and the thermal evaporation seawater desalination system are detachable.

[0014] Preferably, the photocatalytic hydrogen production system, the catalytic hydrogenation and hydrogen storage system, and the thermal evaporation seawater desalination system are all separated by glass with excellent light transmittance and thermal conductivity.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: An integrated device for hydrogen production, storage and seawater desalination using full spectrum frequency division of solar energy is constructed for the purpose of efficient utilization of the full spectrum of solar energy. After sunlight is input into the device as energy from the inner layer, the inner layer of the device uses a photocatalyst to absorb and utilize part of the solar energy and undergoes photocatalytic hydrogen production coupled with organic substrate degradation to output hydrogen into the second layer. The second layer uses a hydrogenation catalyst and a hydrogen storage carrier with a photothermal effect to utilize the hydrogen input from the inner layer and the remaining solar energy. The hydrogen and the hydrogen storage carrier are combined under the action of the catalyst to obtain a hydrogen storage material as a product output. The remaining solar energy is converted into usable thermal energy under the absorption and conversion of the photothermal effect of the catalyst, which promotes the progress of the hydrogen storage reaction. The remaining thermal energy is input as energy to the outermost layer. The seawater desalination part of the outermost layer uses the input thermal energy to perform thermal evaporation to desalinate seawater, converting seawater into fresh water vapor and cooling and liquefying it in the condensation module to output fresh water, layer by layer, and finally realizing efficient frequency division utilization of the full spectrum of solar energy.

[0016] Furthermore, the xenon lamp irradiation inlet is used to simulate sunlight energy in a laboratory environment as energy input for the system device.

[0017] Furthermore, in order to further promote the photocatalytic hydrogen production coupled with organic matter degradation reaction inside the device, a first stirring magnetic placement point is set to ensure full contact between the reactants and the catalyst, thereby achieving a good hydrogen yield.

[0018] Furthermore, the sun's energy is mainly concentrated in the visible light band, and photocatalysts that efficiently absorb visible light waves can utilize solar energy more efficiently.

[0019] Furthermore, in order to ensure the safety and connectivity of the device and to eliminate the influence of air components on the reaction in the device, a gas purge port is provided to exhaust the system air and maintain the air pressure in the device stable.

[0020] Furthermore, in order to promote sufficient contact between the hydrogen storage carrier and the hydrogenation catalyst and thus obtain good hydrogen storage efficiency, a second stirring magnetic placement point is set to promote the hydrogen storage reaction.

[0021] Furthermore, materials with good photothermal effects absorb light sufficiently and can efficiently convert the input solar energy into thermal energy, while hydrogenation catalysts and hydrogen storage carriers with photothermal effects can be used for efficient hydrogen storage reactions. Setting hydrogenation catalysts and hydrogen storage carriers with photothermal effects in the second layer can simultaneously achieve efficient hydrogen storage and utilize the surplus solar energy to convert into heat.

[0022] Furthermore, to ensure that the freshwater vapor generated by the heating of seawater can be transferred out of the device in a timely and efficient manner, a condensation module is used to promote the liquefaction of the freshwater vapor and drip it into the freshwater collection tank. The freshwater is output as the device product through the freshwater output port.

[0023] Furthermore, high thermal conductivity and high light transmittance glass materials are used to ensure stable transfer of light and heat energy between systems, that is, efficient heat transfer.

[0024] In summary, the present invention utilizes sunlight entering the device system from the innermost layer as energy input, and the full spectrum of solar energy is gradually fully utilized from the inside to the outside, thereby achieving efficient utilization of the full spectrum of solar energy, and at the same time realizing integrated hydrogen production and storage, seawater desalination, and organic wastewater treatment.

[0025] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings to be used in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 Schematic diagram of the device of the present invention.

[0028] Among them: 1. Fresh water collection tank; 2. Condensation module; 3. Tilt hook; 4. Gas purge port; 5. Bolt fixing hole; 6. Top device cover; 7. Xenon lamp irradiation inlet; 8. Organic wastewater coupled photocatalyst system; 9. Hydrogen storage system; 10. Seawater; 11. First stirring magnet placement point; 12. Second stirring magnet placement point; 13. First internal support column; 14. Second internal support column; 15. Fresh water output port. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "one side", "one end", "one side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0033] It should also be understood that the terms used in the present specification are only for the purpose of describing particular embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0034] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0035] The accompanying drawings illustrate various schematic diagrams of structures according to embodiments disclosed herein. These figures are not drawn to scale; for clarity, some details are exaggerated and some details may be omitted. The shapes of the various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0036] This invention provides an integrated hydrogen production, storage, and seawater desalination device that utilizes the full spectrum of solar energy. Taking into account the availability of some waste heat from the hydrogen storage reaction, and leveraging abundant seawater resources, the desalination process is placed in the device's outermost layer. This allows for efficient hydrogen production and storage while also utilizing excess heat for desalination. The present invention aims to design and construct an integrated device that synergistically promotes organic wastewater degradation, efficient hydrogen production and storage, and seawater desalination, ultimately achieving efficient utilization of the full solar spectrum.

[0037] See also Figure 1 The present invention discloses an integrated hydrogen production, storage and seawater desalination device utilizing full spectrum frequency division of solar energy, comprising a shell, which comprises a photocatalytic system layer, a hydrogen storage system layer and a thermal evaporation seawater desalination system layer from the inside to the outside. A xenon lamp irradiation inlet 7 is provided above the photocatalytic system layer, a first stirring magnetic placement point 11 is provided at the bottom of the photocatalytic system layer, an organic wastewater coupled photocatalyst system 8 is provided inside the photocatalytic system layer, the photocatalytic system layer is open and communicated with the hydrogen storage system layer, for introducing the generated hydrogen into the hydrogen storage system layer, a hydrogenation catalyst and hydrogen storage carrier hydrogen storage system 9 with good photothermal effect is provided inside the hydrogen storage system layer, a gas purge port 4 is provided on one side of the middle part, and a second stirring magnetic placement point 12 is provided at the bottom of the hydrogen storage system layer; seawater 10 is provided in the thermal evaporation seawater desalination system layer, an inclined hook 3 is provided on the upper side of the thermal evaporation seawater desalination system layer for hanging and fixing a condensation module 2, one end of the condensation module 2 is connected to a fresh water collection tank 1, and the fresh water is output as a device product along a fresh water output port 15.

[0038] Among them, the photocatalytic hydrogen production system, catalytic hydrogenation and hydrogen storage system and thermal evaporation seawater desalination system are all designed with detachable structures.

[0039] A photocatalytic system is established at the center of the integrated hydrogen production, storage and seawater desalination device that utilizes the full spectrum of solar energy. Hydrogen is generated using photocatalysts and organic wastewater, and the hydrogen is introduced into the second-layer hydrogen storage system through the top opening. At the same time, the photothermal effect of the hydrogenation catalyst absorbs excess light energy and converts it into thermal energy, driving the hydrogen storage reaction of the system. A thermal evaporation seawater desalination system is established in the outermost layer, using the waste heat of the second-layer system as the driving force to promote the system to desalinate seawater, thereby making full use of solar energy.

[0040] For the central layer photocatalytic system, a high-efficiency photocatalyst is used, which can efficiently absorb ultraviolet light and visible light. At the same time, the organic wastewater to be treated can be used as the reaction solution to achieve stable and efficient photocatalytic hydrogen production and organic wastewater treatment.

[0041] For the two-layer hydrogen storage system, a hydrogenation catalyst with good photothermal effect is preferred to ensure that the system can fully absorb the remaining light energy and convert it into usable heat energy, and use organic small molecules such as unsaturated aldehydes, ketones, alkynes, alkenyls, and aromatic benzene rings as hydrogen storage carriers, thereby realizing the storage of hydrogen produced by the photocatalytic system.

[0042] For the outermost seawater desalination system, it can fully absorb and utilize the waste heat of the photocatalytic hydrogen production and hydrogen storage system. At the same time, the condensation module uses materials with good thermal conductivity such as aluminum plates to ensure that fresh water can be fully collected.

[0043] The working principle of the integrated hydrogen production, storage and seawater desalination device using full spectrum frequency division of solar energy of the present invention is as follows: The three parts of photocatalysis, catalytic hydrogenation and storage, and seawater thermal evaporation and desalination utilize the full wavelength of sunlight; First, sunlight directly irradiates the photocatalytic system. The photocatalyst absorbs ultraviolet light and part of the visible light to catalytically decompose water to produce hydrogen. Part of the visible light and infrared light bands are absorbed by the photocatalyst and the photocatalytic solution and converted into heat. The photocatalytic solution can be selected from organic wastewater, which can not only produce hydrogen but also degrade and treat organic wastewater. Secondly, the unabsorbed visible light and infrared light bands are absorbed by the catalyst of the catalytic hydrogenation system and converted into heat. The waste heat generated by the photocatalytic system can also be transferred to the catalytic hydrogenation and hydrogen storage system, reducing the energy barrier of the catalytic hydrogenation and hydrogen storage reaction process, and realizing the synergistic driving of catalytic hydrogenation and hydrogen storage by the remaining solar heat and the waste heat of the photocatalytic system. At the same time, the hydrogen produced by photocatalysis can be transferred to the catalytic hydrogenation and hydrogen storage system as a hydrogen source for hydrogenation, which not only realizes the full spectrum frequency division of sunlight for hydrogen production and storage, but also realizes the integration of hydrogen production and storage. The catalytic hydrogenation and hydrogen storage catalyst and hydrogen storage carrier can respectively adopt a hydrogenation catalyst with photothermal effect and an organic small molecule hydrogen storage carrier such as unsaturated aldehydes and ketones, alkynyl groups, alkenyl groups, and aromatic benzene rings. Furthermore, the waste heat from the catalytic hydrogenation and storage system can be further utilized through the thermal evaporation seawater desalination system to drive the evaporation of seawater to produce fresh water, thereby realizing the full utilization of the solar energy spectrum.

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0045] First, in terms of device design: focus on the research of achieving stable hydrogen transmission and full utilization of the full spectrum of sunlight, and coordinate and connect the three major sections of hydrogen production, hydrogenation and seawater desalination in series to ensure that while light catalytically degrades wastewater to stably produce hydrogen, the unused light undergoes efficient photothermal conversion in the hydrogen storage system, promoting the hydrogenation reaction, and the waste heat is transferred to seawater, using thermal evaporation to achieve seawater desalination.

[0046] Secondly, in terms of hydrogen production modules: focus on finding efficient photocatalysts to degrade wastewater for synergistic hydrogen production, improve the chemical feed ratio to achieve a high degree of synergy with the hydrogen storage module, and achieve the production of hydrogen while degrading polluted wastewater to obtain low-concentration wastewater or even fresh water.

[0047] At the same time, in terms of hydrogen storage modules: research on hydrogenation reactions based on hydrogenation catalysts with good photothermal effects and hydrogen storage carriers, balancing the relationship between the ratio of reaction materials and hydrogen yield, and achieving high synergy and stability between hydrogen production and hydrogen storage modules.

[0048] Furthermore, in terms of seawater desalination: starting from traditional thermal evaporation seawater desalination, explore and design high-efficiency heat exchange systems to improve the heat exchange rate of seawater, thereby increasing the freshwater production rate.

[0049] Finally, based on experimental research on the design of the device and the matching of the three major modules, a full-process energy and mass transfer mechanism and optimization criteria involving photocatalytic organic wastewater treatment, hydrogen storage and seawater desalination are proposed to guide the construction of efficient integrated devices and achieve efficient utilization of the full spectrum of solar energy.

[0050] In summary, the present invention's integrated hydrogen production, storage, and seawater desalination device, utilizing the full spectrum of solar energy through frequency-splitting, utilizes sunlight through a multi-system spatially directional coupling design. This allows for the coordinated implementation of solar-driven photocatalytic hydrogen production, catalytic hydrogenation and storage, and thermal evaporation for seawater desalination. This not only achieves efficient full-spectrum solar energy utilization, but also integrates hydrogen production and storage, seawater desalination, and organic wastewater treatment. The design of this device aligns with green environmental protection concepts and fully responds to the country's strategic need to strengthen the utilization of renewable energy.

[0051] The above content is 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. An integrated device for producing, storing and desalinating hydrogen using the full spectrum of solar energy, characterized in that: From the inside to the outside, it includes a photocatalytic hydrogen production system, a catalytic hydrogenation and hydrogen storage system, and a thermal evaporation seawater desalination system; The photocatalytic hydrogen production system is used to absorb ultraviolet light and part of visible light to catalytically decompose water to produce hydrogen. Part of the visible light and infrared light bands are absorbed by the photocatalyst and the photocatalytic solution and converted into heat; The catalytic hydrogenation and storage system is used to absorb the unused part of the visible light and infrared light band and convert it into heat, and transfer the waste heat generated by the photocatalytic hydrogen production system to the catalytic hydrogenation and storage system, so as to realize the synergistic driving of the catalytic hydrogenation and storage system by the remaining solar heat and the waste heat of the photocatalytic hydrogen production system; The hydrogen produced by photocatalysis is transferred to the catalytic hydrogenation and hydrogen storage system as the hydrogen source for hydrogenation, realizing the full spectrum frequency division of sunlight for hydrogen production and storage, and realizing the integration of hydrogen production and storage; The thermal evaporation seawater desalination system uses the waste heat from the catalytic hydrogenation and hydrogen storage system to drive the evaporation of seawater to produce fresh water, thereby achieving full utilization of the full spectrum of solar energy.

2. The integrated device for producing, storing and desalinating seawater by utilizing the full spectrum of solar energy according to claim 1 is characterized in that: A solar light source is arranged above the photocatalytic hydrogen production system.

3. The integrated device for producing, storing and desalinating seawater by utilizing the full spectrum of solar energy according to claim 2 is characterized in that: The hydrogen produced by the photocatalytic hydrogen production system is used as the hydrogen source for the hydrogen storage system.

4. The integrated device for producing, storing and desalinating seawater by utilizing the full spectrum of solar energy according to claim 1, 2 or 3, characterized in that: The photocatalytic hydrogen production system absorbs and utilizes the ultraviolet light and part of the visible light band of sunlight.

5. The integrated device for producing, storing and desalinating seawater by utilizing the full spectrum of solar energy according to claim 1 is characterized in that: A gas purge port is provided on one side of the upper side of the catalytic hydrogenation and hydrogen storage system.

6. The integrated device for producing, storing and desalinating seawater by utilizing the full spectrum of solar energy according to claim 5 is characterized in that: The catalyst in the catalytic hydrogenation and hydrogen storage system is a hydrogenation catalyst with photothermal effect, and the hydrogen storage carrier is an unsaturated aldehyde, ketone, alkynyl, alkenyl or aromatic benzene ring.

7. The integrated device for producing, storing and desalinating seawater by utilizing the full spectrum of solar energy according to claim 1 is characterized in that: The full spectrum frequency division utilization is to use ultraviolet light and part of visible light for photocatalytic hydrogen production, and part of visible light and infrared light for photothermal conversion, while driving the evaporation and desalination of seawater.

8. The integrated device for producing, storing and desalinating seawater by utilizing the full spectrum of solar energy according to claim 1 is characterized in that: A condensation module is arranged above the thermal evaporation seawater desalination system. One end of the condensation module is connected to a fresh water collection tank for draining the generated fresh water, and the fresh water is output from the output port as a product.

9. The integrated device for producing, storing and desalinating seawater by utilizing the full spectrum of solar energy according to claim 1 is characterized in that: The photocatalytic hydrogen production system, catalytic hydrogenation and hydrogen storage system and thermal evaporation seawater desalination system are detachable.

10. The integrated device for producing, storing and desalinating seawater by utilizing the full spectrum of solar energy according to claim 1, characterized in that: The photocatalytic hydrogen production system, catalytic hydrogenation and hydrogen storage system and thermal evaporation seawater desalination system are separated by glass with excellent light transmittance and thermal conductivity.

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