High-storage-density hydrogen production reaction system and method

Abstract

The invention discloses a high-storage-density hydrogen production reaction system and method, and belongs to the technical field of hydrogen production reactors. The system comprises a reactor, a plurality of nozzles are arranged at the top of the reactor, and a porous light material filled with sodium borohydride is placed at the bottom of the reactor; a nozzle of the reactor is connected with an acid solution storage tank, a peristaltic pump is arranged between the acid solution storage tank and the reactor, and the outlet end of the reactor is sequentially connected with a cooling device, a purifier and a pressure valve. According to the high-storage-density hydrogen production reaction system, sodium borohydride filled in a porous light material is adopted as a hydrogen storage medium, an acid solution is adopted as a catalyst for hydrogen release reaction, high-density integrated hydrogen production and storage are achieved, and hydrogen production controllability and safety are higher. The high-efficiency hydrogen production method has better application practice, and provides direction guidance for application and commercialization of a high-storage-density hydrogen production technology.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydrogen production reactors, and particularly relates to a high storage density hydrogen production reaction system and method. Background Art

[0002] As a clean energy carrier, hydrogen has become a key direction for energy transformation under the background of carbon neutrality. However, the efficiency, safety, and economy of hydrogen production and storage technologies are still bottlenecks restricting its large-scale application. Traditional hydrogen production technologies, such as water electrolysis for hydrogen production and natural gas reforming, mostly adopt a separated system design for hydrogen storage, which has problems such as large equipment volume and inability to be used on mobile devices. As a result, the energy loss is relatively high, and it is difficult to meet the requirements of high storage density and integration in scenarios such as vehicles, drones, and distributed energy.

[0003] Hydrolysis of sodium borohydride for hydrogen production is an integrated hydrogen production and storage technology path with good application prospects. Although it has the advantages of high hydrogen storage density and hydrogen supply on demand, the practical application of this technology still faces key challenges. Solid sodium borohydride particles are prone to moisture absorption and decomposition in air and are difficult to store stably. In an alkaline aqueous solution, sodium borohydride can be stored stably for a long time, but due to its low solubility, the overall hydrogen storage density is low. Moreover, the hydrolysis reaction kinetics is slow and is prone to incomplete decomposition due to the accumulation of intermediate products, restricting the hydrogen production efficiency and system response speed.

[0004] Therefore, there is an urgent need to develop a high storage density hydrogen production reactor. Through structural innovation and material optimization, the efficient coupling of the hydrogen production - hydrogen storage process can be realized, breaking through the defects of low energy density and slow dynamic response of traditional systems, and meeting the lightweight and compact requirements of mobile hydrogen energy equipment. Summary of the Invention

[0005] In order to overcome the above problems of low hydrogen storage density and large device volume on existing mobile devices, the purpose of the present invention is to provide a high storage density hydrogen production reaction system and method. The high storage density hydrogen production reaction system uses sodium borohydride filled in porous lightweight materials as the hydrogen storage medium and an acidic solution as the catalyst for the hydrogen release reaction, realizing high-density integrated hydrogen production and storage, and making the controllability and safety of hydrogen production stronger. This efficient hydrogen production method has good application practices, providing direction guidance for the application and commercialization of high storage density hydrogen production technologies.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The present invention provides a hydrogen production reaction system with high storage density, including a reactor. A plurality of nozzles are arranged at the top of the reactor, and a porous lightweight material filled with sodium borohydride is placed at the bottom; the nozzles of the reactor are connected to an acidic solution storage tank, a peristaltic pump is arranged between the acidic solution storage tank and the reactor, and the outlet end of the reactor is sequentially connected to a cooling device, a purifier and a pressure valve.

[0008] In one embodiment, a pressure sensor is arranged between the front of the peristaltic pump and the reactor.

[0009] In one embodiment, a safety valve is arranged on one side of the reactor.

[0010] In one embodiment, the cooling device includes an air-cooled cooler and a fan located above the air-cooled cooler.

[0011] In one embodiment, the air-cooled cooler adopts an aluminum corrugated fin.

[0012] In one embodiment, ion exchange resin and molecular sieve are sequentially arranged inside the purifier along the material flow direction; the ion exchange resin is used to absorb excess acidic gas molecules, and the molecular sieve is used to dry the generated hydrogen and improve the purity of hydrogen.

[0013] In one embodiment, the porous lightweight material filled with sodium borohydride is an aluminum foam polymer.

[0014] In one embodiment, the sodium borohydride in the porous lightweight material filled with sodium borohydride is filled in the pores of the aluminum foam polymer in granular form.

[0015] In one embodiment, the plurality of nozzles are uniformly arranged coaxially at the top of the reactor.

[0016] In one embodiment, the acidic solution storage tank adopts a double-layer anti-corrosion structure. The inner layer selects fiberglass as the anti-corrosion lining, and the outer layer adopts carbon fiber winding.

[0017] The present invention also provides a hydrogen production reaction method with high storage density, including the following steps:

[0018] The peristaltic pump drives the acidic solution in the acidic solution storage tank to enter the reactor, and sprays through the nozzles to contact and react with the sodium borohydride particles in the porous lightweight material filled with sodium borohydride to generate hydrogen. The hydrogen is cooled by the cooling device, then filtered by the purifier to remove acidic gas impurities and water vapor, and released through the pressure valve.

[0019] On the basis of the above reaction method, a pressure sensor is arranged between the front of the peristaltic pump and the reactor in the hydrogen production reaction system with high storage density;

[0020] The pressure sensor continuously monitors the internal pressure of the reactor during the hydrogen production reaction and adjusts the flow rate of the peristaltic pump.

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

[0022] The high-storage-density hydrogen production reaction system provided by the present invention adopts a high-density filling method and is equipped with porous lightweight materials, enabling the sodium borohydride particles to be filled at a high density, increasing the upper limit value of the capacity of the reactants. At the same time, the porous structure can help the sodium borohydride and the acidic solution to be fully and evenly mixed and react, improving the utilization rate of the hydrogen production reaction and reducing the raw material cost; the structure of the porous material can also reduce the possibility of the product blocking on the surface layer, avoiding the interruption of the reaction and the failure of the equipment. The reactor device has a compact structure, high volume utilization rate, and strong hydrogen production capacity, and can be used to provide energy supply for small mobile devices, solving the problems of some mobile devices being large in size, complex in structure, and inconvenient to use. The reactor uses an acidic solution to react with sodium borohydride, which can not only improve the response rate, make the hydrogen production reaction more complete, but also reduce the generation of by-products. The introduction of the porous lightweight material effectively solves the problems existing in the existing use method of sodium borohydride. Its pore structure physically isolates the direct contact between the wet air in the environment and the particles, greatly improving the storage stability. At the same time, using an acidic solution to replace the traditional metal catalyst simplifies the reaction path and accelerates the decomposition reaction, ensuring high purity of hydrogen. Based on the above technical optimizations, the urgent need for developing an integrated hydrogen production reactor with high storage density is met - by coupling a porous hydrogen storage carrier with an acidic catalytic reaction system, breaking through the bottlenecks such as low energy density and large volume caused by the separation of hydrogen production and hydrogen storage in traditional technologies, and ultimately realizing lightweight and compact mobile hydrogen energy equipment, promoting the implementation of hydrogen energy applications in scenarios such as drones and portable power supplies.

[0023] Furthermore, the pressure sensor is connected to the peristaltic pump and the reactor, continuously monitors the internal pressure of the reactor, and adjusts the peristaltic pump to prevent the peristaltic pump from continuously delivering the acidic solution to the reactor when the reactor pressure is too high.

[0024] Furthermore, the purifier is equipped with ion exchange resin and molecular sieve inside to double-filter the generated hydrogen and improve the purity of hydrogen.

[0025] Furthermore, the air-cooled cooler uses low-density aluminum corrugated fins. Its characteristics of low cost and light weight enable it to be well applied in drones, small devices, etc. Compared with flat fins, its effective heat dissipation area is significantly increased, optimizing the air flow disturbance and enhancing the heat transfer capacity, further improving the cooling performance.

[0026] Furthermore, the pressure valve is made of high-strength composite materials to withstand extreme pressures and avoid hydrogen embrittlement. The surface of the materials is nitrided and coated to reduce the risks of hydrogen corrosion and penetration, improving the safety of the device.

[0027] In summary, the present invention adopts a high-density storage method, enabling a hydrogen production device with a smaller volume to have high-efficiency and high-yield hydrogen production effects. At the same time, a safety valve and a pressure sensor are provided in the device. On the one hand, it can reduce the potential hazards caused by excessive pressure in the reactor. On the other hand, it can also adjust the peristaltic pump in a timely manner according to the pressure sensor, improving the safety and reliability of the device.

[0028] The present invention also provides a high-storage-density hydrogen production reaction method. During hydrogen production, the peristaltic pump drives the acidic solution to enter the reactor through a channel from the acidic solution storage tank, and then sprays out through multiple nozzles arranged with a uniform density. The acidic solution contacts the sodium borohydride particles in the porous material filled in the reactor. The filling of high-density sodium borohydride particles and the increase in the solid-liquid contact area accelerate the hydrogen production reaction, generating a large number of hydrogen bubbles, which flow out through the right outlet of the reactor to reach the air-cooled cooler, and then pass through the filtration and drying of the purifier to reach the pressure valve.

[0029] Furthermore, during the reaction, the pressure sensor can perform pressure feedback on the peristaltic pump, thereby causing the peristaltic pump to change the input rate of the acidic solution, changing the amount of contact with the sodium borohydride particles in the reactor, and thus the hydrogen production rate also changes accordingly. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of a high-storage-density hydrogen production reaction system of the present invention;

[0031] Wherein: 1 - acidic solution storage tank; 2 - peristaltic pump; 3 - pressure sensor; 4 - safety valve; 5 - reactor; 6 - nozzle; 7 - porous lightweight material filled with sodium borohydride; 8 - fan; 9 - air-cooled cooler; 10 - purifier; 11 - ion exchange resin; 12 - molecular sieve; 13 - pressure valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present invention are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0034] The present invention will be further described in detail below with reference to the drawings:

[0035] See Figure 1 , this embodiment provides a hydrogen production reaction system with high storage density. The whole set of reaction devices includes an acidic solution storage tank 1, a peristaltic pump 2, a pressure sensor 3, a safety valve 4, a reactor 5, a nozzle 6, a porous lightweight material 7 filled with sodium borohydride, a fan 8, an air-cooled cooler 9, a purifier 10 and a pressure valve 13. The fan 8 and the air-cooled cooler 9 form a cooling device.

[0036] Among them, the acidic solution storage tank 1 is connected to the peristaltic pump 2, and the peristaltic pump 2, the pressure sensor 3 and the reactor 5 are connected; the reactor 5 is connected to the safety valve 4. The reactor 5 internally contains a nozzle 6 and a porous lightweight material 7 filled with sodium borohydride. The nozzle 6 and the porous lightweight material 7 filled with sodium borohydride are respectively located at the upper and lower parts inside the reactor; the reactor 5 is also connected to the air-cooled cooler 9; a fan 8 is arranged above the air-cooled cooler 9, and the air-cooled cooler 9 is connected to the purifier 10; the purifier 10 internally contains an ion exchange resin 11 and a molecular sieve 12. The ion exchange resin 11 and the molecular sieve 12 are arranged in sequence along the material flow direction, specifically located on the left and right sides of the purifier respectively; the purifier 10 is also connected to the pressure valve 13.

[0037] A further improvement of this embodiment is that an acidic solution is used as a catalyst, which can make the reaction proceed rapidly. By adjusting the acid concentration, the precise hydrogen production rate can be controlled to meet the requirements of different scenarios.

[0038] A further improvement of this embodiment is that a safety valve 4 is arranged at one end of the reactor 5 to prevent the internal pressure of the reactor 5 from being too high during the hydrogen production process, reducing the possibility of potential safety hazards of the device.

[0039] A further improvement in this embodiment is that the acidic solution storage tank 1, the peristaltic pump 2, and the reactor 5 are connected. A pressure sensor 3 is provided between the front of the peristaltic pump 2 and the reactor 5, which can monitor the pressure inside the reactor 5 and feed it back to the peristaltic pump 2 in a timely manner, so as to facilitate the peristaltic pump 2 to control the input of the acidic solution in the acidic solution storage tank 1, improving the safety and controllability of the reactor 5.

[0040] A further improvement in this embodiment is that the upper end of the reactor 5 adopts a plurality of coaxial nozzles 6, so that the acidic solution can fully and evenly contact with the reactant sodium borohydride, improving the utilization rate of raw materials.

[0041] A further improvement in this embodiment is that the lower end of the reactor 5 is equipped with a porous lightweight material 7 filled with sodium borohydride, which is an aluminum foam polymer porous material. The porous structure enables the reactants to contact more fully and evenly, and can prevent the boric acid generated during the reaction from clogging on the surface layer, resulting in the inability to carry out subsequent reactions. In addition, the porous structure facilitates the disassembly, cleaning inside the reactor 5, and the refilling of sodium borohydride.

[0042] A further improvement in this embodiment is that the reactor 5 is connected to an air-cooled cooler 9. A fan 8 is provided at the upper end of the air-cooled cooler 9. The air-cooled structure reduces the volume of the cooler, and the setting of the fan 8 also enhances the air-cooling effect.

[0043] A further improvement in this embodiment is that the acidic solution storage tank 1 adopts a double-layer anti-corrosion structure. The inner layer selects fiberglass as the anti-corrosion lining, and the outer layer is wound with carbon fiber, enhancing the anti-corrosion property and sealing performance of the storage tank.

[0044] A further improvement in this embodiment is that a pressure valve 13 is provided at the rear end of the purifier 10, and the pressure valve 13 can adjust the hydrogen release rate according to different working conditions.

[0045] A reaction method of a high storage density hydrogen production reaction system based on the above embodiment includes the following steps:

[0046] The acidic solution in the acidic solution storage tank 1 is driven by the peristaltic pump 2 and sent into the reactor 5 through a pipeline. It is sprayed through the nozzle 6 and contacts and reacts with the sodium borohydride particles filled in the porous lightweight material in the reactor 5 to generate a large amount of hydrogen. After being cooled by the air-cooled cooler 9, it enters the purifier 10. First, the acidic gas molecular impurities in the hydrogen are removed by the ion exchange resin 11, then dried by the molecular sieve 12, and finally released through the pressure valve 13.

[0047] In another embodiment, a hydrogen production reaction system with high storage density is provided, including an acidic solution storage tank 1, a peristaltic pump 2, a pressure sensor 3, a safety valve 4, a reactor 5, a nozzle 6, a porous lightweight material 7 filled with sodium borohydride, a fan 8, an air-cooled cooler 9, a purifier 10, an ion exchange resin 11, a molecular sieve 12, and a pressure valve 13.

[0048] Among them, the acidic solution storage tank 1, the peristaltic pump 2, and the reactor 5 are connected to form an input end; the pressure sensor 3 is connected to the front of the peristaltic pump 2 and the rear of the reactor 5; the reactor 5 is provided with a nozzle 6 and a porous lightweight material 7 filled with sodium borohydride inside, and the reactor 5 is also connected to the air-cooled cooler 9; a fan 8 is arranged above the air-cooled cooler 9, and the air-cooled cooler 9 is connected to the purifier 10; the purifier 10 contains an ion exchange resin 11 and a molecular sieve 12 inside, which are located on the left and right sides of the purifier respectively, and the purifier 10 is connected to the pressure valve 13.

[0049] The pressure sensor 3 is connected to the front-end control of the peristaltic pump 2 and the upper part of the reactor 5, and is used to monitor the internal pressure of the reactor 5 and adjust the flow rate of the peristaltic pump 2. Specifically, the pressure sensor 3 monitors the pressure change of the reactor 5 and transmits the signal to the peristaltic pump 2, and the peristaltic pump 2 adjusts the input amount of the acidic solution according to the signal, so as to maintain the pressure stability in the reactor 5 and ensure the safety and efficiency of the hydrogen production process.

[0050] Above the inside of the reactor 5, a plurality of nozzles 6 with the same structure are adopted and arranged in a uniform density arrangement.

[0051] A safety valve 4 is arranged on the left side of the reactor 5, reducing the potential risk of excessive pressure in the reactor 5. The right side of the reactor 5 is connected to the air-cooled cooler 9, and the air-cooled cooler 9 adopts low-density aluminum corrugated fins and a fan 8 is arranged above it.

[0052] The porous lightweight material in the porous lightweight material 7 filled with sodium borohydride uses aluminum foam polymer, which can increase the upper limit of the filling amount of sodium borohydride particles and also reduce the possibility of blockage by reaction products.

[0053] The air-cooled cooler 9 is connected to the purifier 10. The purifier 10 is filled with an ion exchange resin 11 and a molecular sieve 12 inside. The ion exchange resin 11 absorbs excess acidic gas molecules, and the molecular sieve 12 dries the generated hydrogen to improve the purity of the hydrogen.

[0054] The purifier 10 is connected to the pressure valve 13. The pressure valve 13 uses high-strength composite materials to withstand extreme pressure and hydrogen corrosion, and the pressure valve 13 can adjust the pressure of the reaction system according to the hydrogen demand.

[0055] A reaction method for a high-storage-density hydrogen production reaction system provided based on the above embodiments, comprising the following steps:

[0056] The peristaltic pump 2 drives the acidic solution in the acidic solution storage tank 1 into the reactor 5, where it is sprayed through the nozzle 6 and contacts the sodium borohydride particles in the porous lightweight material 7 filled with sodium borohydride for reaction, generating a large amount of hydrogen. The hydrogen is cooled by the air-cooled cooler 9, and then filtered by the purifier 10 to remove acidic gas impurities and water vapor, and is released through the pressure valve 13; the pressure sensor 3 continuously monitors the internal pressure of the reactor 5 and adjusts the flow rate of the peristaltic pump 2.

[0057] Compared with traditional hydrogen production reactors, this reactor can achieve high-density integrated hydrogen production and storage, achieving the effects of small volume and high capacity; it can also adjust the hydrogen production rate through pressure feedback, thereby realizing the stable output of hydrogen, and has high industrial application value.

[0058] In one embodiment, referring to Figure 1 , in the high-storage-density hydrogen production reaction system of this embodiment, the acidic solution storage tank 1, the peristaltic pump 2, and the reactor 5 constitute the hydrogen production reaction part; the acidic solution storage tank 1 and the reactor 5 constitute the reactant supply part; the peristaltic pump 2 and the pressure sensor 3 constitute the pressure control part; the safety valve 4 is the safety guarantee part of the reactor 5; the reactor 5, the nozzle 6, and the porous lightweight material 7 filled with sodium borohydride constitute the reactor 5; the fan 8 and the air-cooled cooler 9 constitute the cooling part; the ion exchange resin 11 and the molecular sieve 12 constitute the purifier 10; the pressure valve 13 is the part where the device interfaces with the outside world.

[0059] The high-storage-density hydrogen production reactor is a multi-component integrated device. The inside of the reactor 5 adopts a high-density filling structure, and the inside of the purifier 10 adopts a distributed structure, which is coherently integrated with each component in sequence.

[0060] The acidic solution storage tank 1 adopts a double-layer anti-corrosion structure. The inner layer selects fiberglass as the anti-corrosion lining, and the outer layer uses carbon fiber to enhance the anti-corrosion property and sealing performance of the storage tank; the acidic solution storage tank 1 is connected to the peristaltic pump 2 through a pipeline above, the front-end control part of the peristaltic pump 2 is connected to the front end of the pressure sensor 3, and the end of the pressure sensor 3 is connected to the reactor 5; the pressure sensor 3 has a high precision of ±0.1%, can detect minute pressure fluctuations in real time, and the internal pressure situation of the reactor 5 can be timely fed back to the peristaltic pump 2. When the pressure is too high or too low, the peristaltic pump 2 can timely adjust the input rate of the acidic solution, so that the entire device operates stably and reliably.

[0061] The safety valve 4 is set on the left side of the reactor 5 and is used for emergency treatment of excessive internal pressure in the reactor 5. Inside the reactor 5, the acidic solution is mixed with a large amount of sodium borohydride particles for reaction. In a short period of time, the pressure may become excessive, leading to potential safety hazards in the reactor 5 and affecting the safety and usability of the device. The excess gas is released through the safety valve 4 to reduce the internal pressure of the reactor 5 to normal.

[0062] The inside of the reactor 5 has a high-density filling structure and is filled with aluminum foam polymer porous lightweight material. The porous material is filled with sodium borohydride particles, and the sodium borohydride particles are evenly distributed in a dispersed manner. On the one hand, it increases the contact area and capacity upper limit of the reactants. On the other hand, it also reduces the possibility of the product blocking the surface of the porous material.

[0063] The nozzle 6 is set above the inside of the reactor 5. It adopts multiple nozzles with the same structure and is evenly arranged above the inside. The acidic solution is evenly sprayed into the reactor 5 through the nozzles and is evenly mixed with the sodium borohydride particles filled in the porous lightweight material, enabling the reaction to proceed fully.

[0064] The fan 8 and the air-cooled cooler 9 are set behind the reactor 5 and jointly cool the gas after the reaction. The fan 8 can adjust the cooling degree of the air-cooled cooler 9 by changing the rotation speed according to the high or low temperature of the gas. The air-cooled cooler 9 uses low-density aluminum corrugated fins to optimize the air flow disturbance and enhance the heat transfer, further improving the cooling performance.

[0065] The purifier 10 is set behind the cooling part. On the left side inside the purifier 10, ion exchange resin 11 is filled, and on the right side, molecular sieve 12 is filled. Specifically, the ion exchange resin 11 is used to treat the acidic gas molecules carried out by the hydrogen to remove some impurities, and the molecular sieve 12 is used for further filtration and drying the gas using its drying function to obtain dry and pure hydrogen.

[0066] The pressure valve 13 is set behind the purifier 10 and uses high-strength composite materials to withstand extreme pressure and also avoid the occurrence of hydrogen embrittlement. The surface of the material is treated by nitriding and plating, which can reduce the risk of hydrogen corrosion and penetration during use. The filtered hydrogen reaches the pressure valve 13 through the channel, and it can appropriately adjust the release rate of hydrogen according to the operating conditions of the device.

[0067] In this embodiment, the peristaltic pump 2 drives the acidic solution to enter the reactor 5 from the acidic solution storage tank 1 through the channel, and then sprays it out through a plurality of nozzles 6 arranged with uniform density. The acidic solution contacts the sodium borohydride particles in the porous material filled in the reactor 5. The high-density filling of sodium borohydride particles and the increase in the solid-liquid contact area accelerate the hydrogen production reaction, generating a large number of hydrogen bubbles, which flow out through the right outlet of the reactor 5 to reach the air-cooled cooler 9, and then pass through the filtration and drying of the purifier 10 to reach the pressure valve 13.

[0068] The hydrogen production method based on the above high-storage-density hydrogen production reaction system is as follows:

[0069] The acidic solution storage tank 1 and the reactor 5 are the input parts of the reactants. The acidic solution is driven by the peristaltic pump 2 to enter the reactor 5 through the pipeline, and is evenly sprayed out through the nozzles 6, and contacts and reacts with the sodium borohydride particles filled in the porous lightweight material inside the reactor 5.

[0070] The safety valve 4 is used to handle extreme situations in the reactor 5. When the reaction proceeds violently, resulting in a sharp increase in pressure, the whole device will have an unstable reaction and there will be potential safety hazards; at this time, the safety valve 4 automatically opens to let the excess gas escape, reducing the internal pressure to the normal standard so that the device can operate stably.

[0071] The porous lightweight material 7 filled with sodium borohydride is used to improve the dispersion degree and capacity upper limit of the reactants, and can also prevent the product from blocking the surface layer of the material, thus causing the reaction to not proceed normally subsequently.

[0072] The fan 8 and the air-cooled cooler 9 jointly cool the generated gas, reduce the gas temperature, reduce the gas volume, and increase the pipeline throughput.

[0073] The purifier 10 is filled with an ion exchange resin 11 and a molecular sieve 12, which perform secondary filtration on the gas to remove acidic gas molecule impurities and water molecules in the gas, thereby obtaining dry and pure hydrogen.

[0074] The pressure valve 13 is the end where the gas arrives, and can adjust the hydrogen release rate according to different operating conditions of the device.

[0075] The pressure valve 13 in this embodiment can adjust the hydrogen release rate according to different operating conditions of the device. The pressure sensor 3 can monitor the real-time pressure inside the reactor. During the reaction, the peristaltic pump 2 can be controlled according to the pressure condition, thereby changing the input rate of the acidic solution, changing the amount of contact with the sodium borohydride particles in the reactor 5, and thus the hydrogen production rate also changes. The high-density storage and controllable design advantages of the entire hydrogen production reactor equipment have extremely high scientific research and application value.

[0076] Based on the above description, those skilled in the art should have a clear understanding of the high storage density hydrogen production reactor.

[0077] It should be noted that although an acidic solution and sodium borohydride particles are used to produce hydrogen in this embodiment, the present invention is not limited thereto. For example, the acidic solution used may include hydrochloric acid but is not limited to nitric acid, sulfuric acid, etc., and the molecular sieve can be replaced by other desiccants such as activated carbon, zeolite, etc.

[0078] The above content is only to illustrate 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 according to the technical idea proposed by the present invention fall within the protection scope of the claims of the present invention.

Claims

1. A hydrogen production reaction system with high storage density, characterized in that, It includes a reactor (5). A number of nozzles (6) are provided at the top of the reactor (5), and a porous lightweight material (7) filled with sodium borohydride is placed at the bottom; the nozzles (6) of the reactor (5) are connected to an acidic solution storage tank (1), and a peristaltic pump (2) is provided between the acidic solution storage tank (1) and the reactor (5); the outlet end of the reactor (5) is sequentially connected to a cooling device, a purifier (10) and a pressure valve (13).

2. The high-storage-density hydrogen production reaction system according to claim 1, characterized in that, A pressure sensor (3) is provided between the front of the peristaltic pump (2) and the reactor (5).

3. The high-storage-density hydrogen production reaction system according to claim 1, wherein The cooling device includes an air-cooled cooler (9) and a fan (8) located above the air-cooled cooler (9).

4. The high-storage-density hydrogen production reaction system according to claim 3, wherein The air-cooled cooler (9) uses aluminum corrugated fins.

5. The high storage density hydrogen production reaction system according to claim 1, wherein, Inside the purifier (10), an ion exchange resin (11) and a molecular sieve (12) are sequentially arranged along the material flow direction; the ion exchange resin (11) is used to absorb excess acidic gas molecules, and the molecular sieve (12) is used to dry the generated hydrogen and improve the purity of hydrogen.

6. The high-storage-density hydrogen production reaction system according to claim 1, characterized in that, The porous lightweight material (7) filled with sodium borohydride is an aluminum foam polymer; the sodium borohydride in the porous lightweight material (7) filled with sodium borohydride is filled in the pores of the aluminum foam polymer in granular form.

7. The high storage density hydrogen production reaction system according to claim 1, characterized in that, A safety valve (4) is provided on one side of the reactor (5).

8. The high storage density hydrogen production reaction system according to claim 1, characterized in that The several nozzles (6) are uniformly arranged coaxially at the top of the reactor (5); the acidic solution storage tank (1) adopts a double-layer anti-corrosion structure, with a fiberglass reinforced plastic as the anti-corrosion inner lining for the inner layer and carbon fiber winding for the outer layer.

9. A hydrogen production reaction method with high storage density, characterized in that, Based on the high storage density hydrogen production reaction system according to any one of claims 1 to 8, it includes the following steps: The peristaltic pump (2) drives the acidic solution in the acidic solution storage tank (1) into the reactor (5), and sprays through the nozzles (6) to contact and react with the sodium borohydride particles in the porous lightweight material (7) filled with sodium borohydride to generate hydrogen, which is cooled by the cooling device, and then filtered by the purifier (10) to remove acidic gas impurities and water vapor, and is released through the pressure valve (13).

10. The high-storage-density hydrogen production reaction method according to claim 9, characterized in that, A pressure sensor (3) is provided between the front of the peristaltic pump (2) and the reactor (5) in the high storage density hydrogen production reaction system; The pressure sensor (3) continuously monitors the internal pressure of the reactor (5) during the hydrogen production reaction and adjusts the flow rate of the peristaltic pump (2).

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