Raw material dispersion type solid sodium borohydride hydrolysis hydrogen production device suitable for kilowatt-level fuel cell

Abstract

The invention discloses a raw material dispersion type solid sodium borohydride hydrolysis hydrogen production device suitable for a kilowatt-level fuel cell, and belongs to the technical field of hydrogen preparation, the raw material dispersion type solid sodium borohydride hydrolysis hydrogen production device comprises a reaction cavity used for providing a reaction environment, and solid sodium borohydride is contained in the reaction cavity; a cobalt chloride solution is contained in the liquid storage bottle, a discharging opening of the liquid storage bottle is communicated with a feeding opening of the reaction cavity through a first pipeline, and a hydrogen outlet of the reaction cavity is communicated with a gas washing inlet of the liquid storage bottle through a second pipeline; a gas inlet of the gas purification filter is communicated with a gas washing outlet of the liquid storage bottle through a third pipeline, and is used for drying, dealkalizing and purifying the hydrogen; a gas inlet of the gas storage tank is communicated with a gas outlet of the gas purification filter through a fourth pipeline and is used for storing the generated hydrogen. According to the hydrogen production device, solid sodium borohydride serves as fuel, and the reaction process of a large amount of solid sodium borohydride is stable and controllable by additionally arranging the inner container while the high energy density is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydrogen production, and particularly relates to a raw material decentralized solid sodium borohydride hydrolysis hydrogen production device suitable for a kilowatt-level fuel cell. Background Art

[0002] A proton exchange membrane fuel cell directly converts the chemical energy in fuel into electrical energy through an electrochemical reaction, and has advantages such as high energy density, high energy conversion efficiency, and environmental friendliness. It is an ideal power source for new energy vehicles, portable electronic devices, drones, and communication base stations. In order to achieve the wide application of fuel cells, it is urgent to solve the problems of high-density storage and rapid and safe supply of pure hydrogen.

[0003] At present, the supply methods of hydrogen fuel mainly include physical hydrogen storage and chemical hydrogen production. Physical hydrogen storage includes high-pressure gaseous hydrogen storage and cryogenic liquid hydrogen storage. High-pressure gaseous hydrogen storage is convenient to use and widely applied, but has a low volumetric energy density; cryogenic liquid hydrogen storage has a high energy density, but the system is complex and the cost is high. Chemical hydrogen production includes steam reforming of hydrocarbons for hydrogen production, methanol reforming for hydrogen production, electrolysis of water for hydrogen production, and hydrolysis of inorganic hydrides for hydrogen production. The steam reforming of hydrocarbons method and the methanol reforming method are widely applied in industry, but the prepared hydrogen contains a certain amount of impurities and needs to be purified before use, and the equipment is complex and difficult to miniaturize; the hydrogen produced by electrolysis of water has high purity, but the cost is high and the power consumption is large, and it cannot be widely promoted for the time being; hydrolysis of inorganic hydrides for hydrogen production, as an efficient hydrogen production method, is very suitable for a hydrolysis hydrogen production device.

[0004] Inorganic hydrides include alkali metal and alkaline earth metal hydrides, borohydrides, and aluminum hydrides. Among them, hydrolysis of sodium borohydride for hydrogen production is a hydrogen production technology that has received wide attention. Sodium borohydride has characteristics such as high energy density, low toxicity, and easy storage. Through hydrolysis or a catalyst, etc., sodium borohydride can release pure hydrogen to provide power for a fuel cell system. The advantages of sodium borohydride as a hydrogen source are: first, it can significantly improve the energy density of the device, thereby extending the endurance time of the fuel cell system; second, it can reduce the weight and volume of the device, thereby increasing the space utilization rate of the system and reducing the load; third, it can improve the safety and stability of the device in a low-temperature environment, thereby expanding the application field of the system. Therefore, borohydrides, as a new type of hydrogen storage material, are expected to bring greater development space to the hydrolysis hydrogen production system.

[0005] Patent CN212315530U discloses a kW-level fuel cell sodium borohydride hydrolysis hydrogen production device, which consists of a feeding unit, a reaction unit, a heat exchange unit, a separation and purification unit, and a waste liquid discharge unit. This device uses a sodium borohydride solution as a reactant, and compared with directly using solid sodium borohydride as a reactant, the energy density of the device is reduced. When a large amount of solid sodium borohydride directly contacts and reacts with a liquid material, the generation of hydrogen gas will cause a mixture of unreacted sodium borohydride and by-products to spout in the form of foam. This phenomenon not only hinders the continuous progress of the reaction but also easily leads to a reaction out of control, and the prior art has not solved this problem. Summary of the Invention

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] A raw material decentralized solid sodium borohydride hydrolysis hydrogen production device applicable to a kW-level fuel cell, comprising:

[0008] A reaction chamber for providing a reaction environment, in which solid sodium borohydride is placed;

[0009] A liquid storage bottle containing cobalt chloride solution, the discharge port of the liquid storage bottle is connected to the feed port of the reaction chamber through a first pipeline, and the hydrogen gas outlet of the reaction chamber is connected to the gas washing inlet of the liquid storage bottle through a second pipeline;

[0010] A gas purification filter, the inlet of which is connected to the gas washing outlet of the liquid storage bottle through a third pipeline, for drying and alkali removal purification of hydrogen gas;

[0011] An air storage tank, the inlet of which is connected to the outlet of the gas purification filter through a fourth pipeline, for storing the generated hydrogen gas.

[0012] Further, the reaction chamber includes:

[0013] A reaction chamber housing, the feed port and the hydrogen gas outlet are both located at the upper end of the reaction chamber housing;

[0014] An inner tank detachably arranged in the reaction chamber housing, the inner tank is provided with a plurality of material areas for placing the solid sodium borohydride, and an infusion channel is arranged inside the inner tank, and the first pipeline extends downward and is connected to the infusion channel.

[0015] Further, a first pressure gauge, a first thermometer and a first pressure relief valve are arranged on the reaction chamber housing.

[0016] Further, a water pump and a first one-way valve are sequentially arranged on the first pipeline along the feeding direction.

[0017] Furthermore, it further includes a condenser, and the condenser includes:

[0018] A heat dissipation copper tube, the gas inlet of the heat dissipation copper tube is communicated with the air outlet of the second pipeline, and the gas outlet of the heat dissipation copper tube is communicated with the gas washing inlet of the liquid storage bottle;

[0019] A fan, the fan is arranged on one side of the heat dissipation copper tube and is used for dissipating heat from the heat dissipation copper tube.

[0020] Furthermore, a foam baffle is arranged in the gas purification filter for fixing the desiccant.

[0021] Furthermore, a second pressure gauge, a second thermometer and a second pressure relief valve are arranged on the gas storage pool.

[0022] Furthermore, it further includes a pressure stabilizing valve, the air inlet of the pressure stabilizing valve is communicated with the air outlet of the gas storage pool through a fifth pipeline, and a second one-way valve and an electronic flowmeter are arranged on the fifth pipeline.

[0023] Furthermore, it further includes a control panel, and the control panel is electrically connected to the flowmeter and the water pump.

[0024] Advantageous effects:

[0025] The hydrogen production device of the present invention uses solid sodium borohydride as fuel. While ensuring high energy density, by installing an inner tank, the reaction process of a large amount of solid sodium borohydride is made stable and controllable.

[0026] The hydrogen production device of the present invention has a high degree of automation. Through the interlock of the electronic flowmeter, the control panel and the water pump, the feeding of the raw material liquid can be automatically controlled according to the size of the gas flow. While maintaining the flow stability, hydrogen production can be carried out continuously, greatly improving the hydrogen production efficiency.

[0027] The hydrogen production rate of the hydrogen production device of the present invention is adjustable. The hydrogen production rate can be very conveniently controlled by changing the concentration of the catalyst raw material in the raw material liquid and the feeding rate of the feeding pump, and it is applicable to fuel cells with different powers from dozens of watts to thousands of watts.

[0028] The hydrogen produced by the hydrogen production device of the present invention has a high purity. Most of the water vapor and alkaline impurities such as NaOH and NaBO2 carried in the hydrogen can be separated through the fan, the heat exchange copper tube and gas washing. The hydrogen can be further dried and alkali-removed and purified through the gas purification filter, and the purified hydrogen can be directly supplied to the fuel cell for use.

[0029] The hydrogen production device of the present invention is safe to use. A safety valve is arranged in the device. When the system pressure reaches the upper limit, the pressure relief valve automatically opens to release the pressure, preventing the system from overpressure and causing danger. Description of the Drawings

[0030] Figure 1 This is the process schematic diagram in the present invention;

[0031] Figure 2 This is the overall structural schematic diagram of the device of the present invention;

[0032] Figure 3 This is the partial structural schematic of the device of the present invention Figure 1 ;

[0033] Figure 4 This is the partial structural schematic of the device of the present invention Figure 2 ;

[0034] Figure 5 This is the schematic diagram showing the relationship between the hydrogen production rate and time in Example 3 of the present invention;

[0035] Figure 6 This is the schematic diagram showing the relationship between the total hydrogen production amount and time in Example 3.

[0036] Among them, 1, reaction chamber; 2, first pipeline; 3, first pressure gauge; 4, first pressure relief valve; 5, hydrogen gas outlet; 6, water pump; 7, liquid storage bottle; 8, outlet of the liquid storage bottle; 9, washing gas inlet; 10, condenser; 11, gas inlet of the heat dissipation copper tube; 12, gas inlet of the heat dissipation copper tube; 13, washing gas outlet; 14, gas purification filter; 15, gas inlet of the gas purification filter; 16, gas outlet of the gas purification filter; 17, gas storage pool; 18, gas inlet of the gas storage pool; 19, second pressure relief valve; 20, second pressure gauge; 21, gas outlet of the gas storage pool; 22, electronic flowmeter; 23, pressure stabilizing valve; 24, gas inlet of the pressure stabilizing valve; 25, gas outlet of the pressure stabilizing valve; 26, control panel. Detailed implementation manners

[0037] To make the objectives, 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 accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of 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 fall within the scope of protection of the present invention.

[0038] 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 those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the 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 should not be construed as a limitation to the present invention.

[0040] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, and is 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 should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0042] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0043] In the present invention, unless otherwise clearly specified and defined, the first feature being above or below the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features between them. Moreover, the first feature being above, over and on the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being below, under and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0044] Example 1

[0045] Reference Figures 1 - 6, A hydrogen production device for decentralized hydrolysis of solid sodium borohydride suitable for kilowatt-level fuel cells, comprising:

[0046] A reaction chamber 1, which is used to provide a reaction environment, and solid sodium borohydride is placed in the reaction chamber 1;

[0047] A liquid storage bottle 7, in which cobalt chloride solution is placed. The outlet 8 of the liquid storage bottle is connected to the inlet 2 of the reaction chamber through a first pipeline. The hydrogen outlet 5 of the reaction chamber 1 is connected to the washing gas inlet 9 of the liquid storage bottle 7 through a second pipeline;

[0048] A gas purification filter 14, the inlet 15 of which is connected to the washing gas outlet 13 of the liquid storage bottle 7 through a third pipeline, and is used for drying and alkali removal purification of hydrogen;

[0049] An air storage tank 17, the inlet 18 of which is connected to the outlet 16 of the gas purification filter through a fourth pipeline, and is used for storing the generated hydrogen.

[0050] During specific implementation, all parts of this device are made of alkali-resistant corrosion materials, such as stainless steel, titanium alloy or polyolefin.

[0051] In this embodiment, the reaction chamber 1 includes:

[0052] A reaction chamber housing, the inlet and the hydrogen outlet 5 are both located at the upper end of the reaction chamber housing;

[0053] An inner tank, which is detachably arranged in the reaction chamber housing. The inner tank is provided with a plurality of material areas for placing the solid sodium borohydride. A liquid infusion channel is arranged inside the inner tank, and the first pipeline extends downward and is connected to the liquid infusion channel.

[0054] During specific implementation, the inner tank can be directly taken out from the reaction chamber housing, which is convenient for replacing the raw materials.

[0055] In this embodiment, a first pressure gauge 3, a first thermometer and a first pressure relief valve 4 are arranged on the reaction chamber housing.

[0056] In this embodiment, a water pump 6 and a first one-way valve are arranged in sequence along the feeding direction on the first pipeline.

[0057] During specific implementation, the cobalt chloride solution raw material liquid is transported to the liquid infusion channel of the inner tank in the reaction chamber 1 through the water pump 6; a first one-way valve is arranged on the pipeline between the water pump 6 and the reaction chamber 1 to prevent fluid backflow.

[0058] During specific implementation, the water pump 6 can be a peristaltic pump, a mechanical pump, a vacuum pump or a diaphragm pump.

[0059] During specific implementation, the reaction chamber housing and the reaction chamber top cover are sealed with a flange; a first pressure gauge 3 and a first pressure relief valve 4 are provided on the reaction chamber top cover, which can display the internal pressure of the reaction chamber. When the pressure reaches the upper limit, the first pressure relief valve 4 automatically opens to release the pressure.

[0060] In this embodiment, a condenser 10 is further included. The condenser 10 includes:

[0061] A heat dissipation copper tube, the gas inlet 11 of the heat dissipation copper tube is communicated with the air outlet of the second pipeline, and the gas outlet 12 of the heat dissipation copper tube is communicated with the gas washing inlet 9 of the liquid storage bottle 7;

[0062] A fan is arranged on one side of the heat dissipation copper tube for dissipating heat from the heat dissipation copper tube.

[0063] During specific implementation, hydrogen enters the condenser 10, and the fan and heat dissipation copper tube of the condenser 10 cool the water vapor and solution droplets carried in the hydrogen into a liquid phase state. The cooled hydrogen leaves the condenser 10 with condensed water and enters the liquid storage bottle 7 from the gas washing inlet 9. After the hydrogen completes gas washing, it leaves the liquid storage bottle 7 through the gas washing outlet 13, and the condensed water is transported to the reaction chamber again by the water pump 6 as a reaction liquid.

[0064] In this embodiment, a foam baffle is arranged inside the gas purification filter 14 for fixing the desiccant.

[0065] During specific implementation, the gas inlet 15 of the gas purification filter is communicated with the gas washing outlet 13 of the liquid storage bottle. After the hydrogen leaves the liquid storage bottle 7, it enters the gas purification filter 14; the gas purification filter 14 is filled with a desiccant for further purifying the hydrogen. The upper and lower ends of the gas purification filter 14 are connected by threads and are provided with foam baffles for fixing the desiccant.

[0066] During specific implementation, the desiccant in the gas purification filter can be one or a mixture of several of molecular sieve, sponge, anhydrous calcium chloride, color-changing silica gel, cotton, activated carbon, etc.

[0067] In this embodiment, a second pressure gauge 20, a second thermometer and a second pressure relief valve 19 are provided on the gas storage tank 17.

[0068] In this embodiment, a pressure stabilizing valve 23 is further included, and the pressure stabilizing valve 23 is used to control the pressure of the hydrogen output into the fuel cell.

[0069] In this embodiment, the gas inlet 24 of the pressure stabilizing valve is communicated with the gas outlet 21 of the gas storage tank through a fifth pipeline. The gas outlet 5 of the pressure stabilizing valve is arranged on the side of the pressure stabilizing valve 23 away from the gas inlet 24 of the pressure stabilizing valve. A second one-way valve and an electronic flowmeter 22 are arranged on the fifth pipeline.

[0070] In this embodiment, it further includes a control panel 26, and the control panel 26 is electrically connected to the electronic flowmeter 22 and the water pump 6.

[0071] During specific implementation, the electronic flowmeter 22 measures the magnitude of the hydrogen flow rate in the pipeline and sends different types of signals to the program control panel 26, and the control panel 26 controls the switch of the water pump 6 according to the obtained signal type.

[0072] Embodiment 2

[0073] This embodiment provides a usage method of a raw material decentralized solid sodium borohydride hydrolysis hydrogen production device applicable to a kilowatt-level fuel cell, and adopts the hydrogen production device in Embodiment 1.

[0074] The usage method includes the following steps:

[0075] Step S10: Before hydrogen production, first add the required amount of reaction liquid to the liquid storage bottle 7 from the outside, and then evenly supplement solid sodium borohydride to the material area of the inner tank. After each material area is filled with solid sodium borohydride, put the inner tank into the reaction chamber 1 and tighten the flange;

[0076] Step S20: When the device is producing hydrogen, turn on the fan of the condenser 10. After the fan works, start to cool the hydrogen in the heat dissipation copper pipe; after setting the flow rate of the water pump 6, start it. The water pump 6 transports the reaction liquid in the liquid storage bottle 7 to the infusion channel of the inner tank in the reaction chamber 1, and the reaction liquid flows down along the infusion channel. After the reaction liquid contacts the solid sodium borohydride, the reaction starts to produce hydrogen. The inner tank can control the contact area of the reactants to make the reactants react evenly;

[0077] Step S30: The hydrogen generated by the reaction enters the condenser 10 through the hydrogen outlet 5. The water vapor and solution droplets carried in the hydrogen are cooled to the liquid phase state. The cooled hydrogen enters the liquid storage bottle 7 with the condensed water, and the hydrogen completes gas washing. The condensed water is transported to the reaction chamber again as the reaction liquid by the water pump; the hydrogen after gas washing is dried through the gas purification filter 14, and then transported to the gas storage tank 17 and supplied to the fuel cell after reaching the set pressure;

[0078] Step S40: A first pressure gauge and a first pressure relief valve are provided at the top of the reaction chamber 1; a second pressure gauge and a second pressure relief valve are provided at the top of the gas storage tank 17. When the pressure gauge detects that the pressure in the system reaches the upper limit, the pressure relief valve automatically opens to release the pressure to prevent the system from overpressure and causing danger.

[0079] Embodiment 3

[0080] In order to better detect the effect of this device, in this embodiment, 215 g of solid sodium borohydride and 1500 ml of 5 wt% cobalt chloride solution are used as raw materials, the desiccant is silica gel that changes color, and the flow rate of the peristaltic pump is set to 29.63 ml / min.

[0081] Tests found that the average hydrogen production rate of the device during the stable operation stage of the device is 17.16 L / min, and the duration is 32 min. The total test time is 42.5 min, the total hydrogen production volume is 547.78 L, and the conversion rate of NaBH4 is 91.93%.

[0082] Example 4

[0083] Using 100 g of solid sodium borohydride and 1500 ml of 5 wt% cobalt sulfate solution as raw materials, the desiccant is molecular sieve, and the flow rate of the mechanical pump is set to 20.78 ml / min.

[0084] Tests found that the average hydrogen production rate of the device during the stable operation stage of the device is 10.92 L / min, the duration is 20 min, the total hydrogen production volume is 214.30 L, and the conversion rate of NaBH4 is 90.48%.

[0085] Example 5

[0086] Using 200 g of solid sodium borohydride and 1500 ml of 5 wt% cobalt chloride solution as raw materials, the desiccant is anhydrous calcium chloride, and the flow rate of the vacuum pump is set to 25.66 ml / min.

[0087] Tests found that the average hydrogen production rate of the device during the stable operation stage of the device is 13.36 L / min, the duration is 30 min, the total hydrogen production volume is 394.96 L, and the conversion rate of NaBH4 is 83.38%.

[0088] Example 6

[0089] Using 200 g of solid sodium borohydride and 1500 ml of 5 wt% cobalt chloride solution as raw materials, the desiccant is sponge, and the flow rate of the diaphragm pump is set to 32.57 ml / min.

[0090] Tests found that the average hydrogen production rate of the device during the stable operation stage of the device is 19.01 L / min, the duration is 20 min, the total hydrogen production volume is 380.45 L, and the conversion rate of NaBH4 is 80.31%.

[0091] It can be seen that the device in this embodiment solves the technical problems of uncontrollable reaction, low hydrogen production rate and insufficient purification of hydrogen during the hydrogen production of the current solid sodium borohydride hydrolysis hydrogen production device, realizes continuous hydrogen production, and has a high reaction conversion rate; the prepared hydrogen is fully purified and can be directly supplied to the fuel cell for use.

[0092] As mentioned above, the above are only the preferred embodiments of the present invention, and do not impose any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A raw material dispersed solid sodium borohydride hydrolysis hydrogen production device suitable for kilowatt-class fuel cells, characterized in that: include: A reaction chamber, the reaction chamber is used to provide a reaction environment, and solid sodium borohydride is contained in the reaction chamber; A liquid storage bottle, wherein the liquid storage bottle contains a cobalt chloride solution, the discharge port of the liquid storage bottle is connected to the feed port of the reaction chamber through a first pipeline, and the hydrogen outlet of the reaction chamber is connected to the gas washing inlet of the liquid storage bottle through a second pipeline; A gas purification filter, the air inlet of the gas purification filter is connected to the gas washing outlet of the liquid storage bottle through a third pipeline, and is used for drying and de-alkali purification of hydrogen; A gas storage tank, wherein the gas inlet of the gas storage tank is connected to the gas outlet of the gas purification filter through a fourth pipeline, and is used for storing the generated hydrogen.

2. A raw material dispersed solid sodium borohydride hydrolysis hydrogen production device suitable for kilowatt-class fuel cells according to claim 1, characterized in that: The reaction chamber comprises: A reaction chamber shell, wherein the feed inlet and the hydrogen outlet are both located at the upper end of the reaction chamber shell; The inner liner is detachably disposed in the reaction chamber shell, the inner liner is provided with a plurality of material areas for containing the solid sodium borohydride, an infusion channel is provided inside the inner liner, and the first pipeline extends downward and is connected to the infusion channel.

3. A raw material dispersed solid sodium borohydride hydrolysis hydrogen production device suitable for kilowatt-class fuel cells according to claim 2, characterized in that: The reaction chamber shell is provided with a No. 1 pressure gauge, a No. 1 temperature gauge and a No. 1 pressure relief valve.

4. A raw material dispersed solid sodium borohydride hydrolysis hydrogen production device suitable for kilowatt-class fuel cells according to claim 1, characterized in that: A water pump and a first one-way valve are sequentially arranged along the first pipeline in the feeding direction.

5. The raw material dispersed solid sodium borohydride hydrolysis hydrogen production device suitable for kilowatt-class fuel cells according to claim 1, characterized in that: Also included is a condenser, the condenser comprising: A heat dissipation copper tube, wherein the gas inlet of the heat dissipation copper tube is connected to the gas outlet of the second pipeline, and the gas outlet of the heat dissipation copper tube is connected to the gas washing inlet of the liquid storage bottle; A fan is arranged on one side of the heat dissipation copper tube and is used to dissipate heat from the heat dissipation copper tube.

6. A raw material dispersed solid sodium borohydride hydrolysis hydrogen production device suitable for kilowatt-class fuel cells according to claim 1, characterized in that: A foam baffle is arranged inside the gas purification filter to fix the desiccant.

7. A raw material dispersed solid sodium borohydride hydrolysis hydrogen production device suitable for kilowatt-class fuel cells according to claim 1, characterized in that: The gas storage tank is provided with a No. 2 pressure gauge, a No. 2 temperature gauge and a No. 2 pressure relief valve.

8. A raw material dispersed solid sodium borohydride hydrolysis hydrogen production device suitable for kilowatt-class fuel cells according to claim 4, characterized in that: It also includes a pressure-stabilizing valve, the air inlet of the pressure-stabilizing valve is connected to the air outlet of the air storage tank through a fifth pipeline, and a second one-way valve and an electronic flow meter are arranged on the fifth pipeline.

9. A raw material dispersed solid sodium borohydride hydrolysis hydrogen production device suitable for kilowatt-class fuel cells according to claim 8, characterized in that: It also includes a control panel, which is electrically connected to the flow meter and the water pump.

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