Reaction-controllable portable chemical hydrogen production device

Abstract

The utility model discloses a reaction-controllable portable chemical hydrogen production device which comprises at least one reactor and at least one carbon purifier, a hydrogen output port of the reactor is connected with a hydrogen input port of the carbon purifier through a pipeline, and a hydrogen filtering device is arranged in the hydrogen output port of the reactor; the reactor comprises an inner cavity, an outer sleeve sleeved outside the inner cavity and a heat insulation cylinder sleeved outside the outer sleeve, a phase change heat storage material is filled between the inner cavity and the outer sleeve, the height of the heat insulation cylinder can be adjusted, and the coverage range of the heat insulation cylinder outside the outer sleeve can be adjusted by adjusting the height of the heat insulation cylinder; and a feeding valve is arranged on the feeding pipeline. According to the utility model, the temperature in the inner cavity can be better adjusted through matched adjustment in the aspects of heat storage and heat dissipation, so that the chemical reaction rate of reactants in the reactor is controlled and adjusted.

Description

Technical Field

[0001] This invention belongs to the field of hydrogen production technology, specifically relating to a portable chemical hydrogen production device with controllable reaction. Background Technology

[0002] With the acceleration of industrialization, the increase in fossil fuel consumption, and its adverse environmental impact, the development of clean and renewable energy is an inevitable trend. Hydrogen, with its characteristics of being renewable, pollution-free, and having the highest mass-energy density, has become an important potential energy carrier.

[0003] In the prior art, there are various technical solutions for preparing hydrogen, such as: Chinese Patent No. CN112357880A provides a high-capacity hydrolysis hydrogen production material and its preparation method and application, as well as a hydrogen production device; Chinese Patent No. CN110313228B provides a portable chemical hydrogen production tank; Chinese Patent No. CN108137318A provides a device for generating hydrogen; Chinese Patent No. CN112897460A provides a portable hydrogen production reactor; Chinese Patent No. CN115159453B provides a method for producing hydrogen by hydrolysis of photovoltaic cutting silicon waste; and Chinese Patent No. CN116654868A provides a system and method for producing hydrogen from solid waste silicon powder.

[0004] However, existing technologies for hydrogen production still have the following problems:

[0005] 1. Lack of temperature control or lack of passive temperature control makes it difficult to match the reaction speed with the demand speed;

[0006] 2. In closed reaction systems, there is a lack of corresponding measures for stirring and feeding. When using electric systems in distributed environments, the energy and environmental dependence is high.

[0007] 3. In terms of ensuring the purity of hydrogen and maintaining a stable and continuous output, there is a high dependence on buffer equipment and a lack of simple and effective solutions. Utility Model Content

[0008] The purpose of this invention is to provide a portable chemical hydrogen production device with controllable reaction.

[0009] The objective of this utility model is achieved through the following technical solution:

[0010] A portable chemical hydrogen production device with controllable reaction is characterized by comprising at least one reactor and at least one carbon purifier, wherein the hydrogen output port of the reactor is connected to the hydrogen input port of the carbon purifier via a pipeline, and a hydrogen filtration device is provided inside the hydrogen output port of the reactor; the reactor comprises an inner cavity, an outer jacket covering the inner cavity, and a heat insulation cylinder covering the outer jacket, wherein a phase change heat storage material is filled between the inner cavity and the outer jacket, the height of the heat insulation cylinder is adjustable, and the coverage area of ​​the heat insulation cylinder on the outer jacket can be adjusted by adjusting the height of the heat insulation cylinder; a feeding pipe communicating with the interior of the inner cavity is provided on the reactor, and a feeding valve is provided on the feeding pipe.

[0011] A further technical solution of this utility model is that both the inner cavity and the outer sleeve are wavy, thereby increasing the surface area of ​​the inner wall of the inner cavity and the outer wall of the outer sleeve.

[0012] A further technical solution of this utility model is: the heat insulation cylinder is composed of two or more cylindrical heat insulation units, which can be stacked sequentially along the height direction. The height of the heat insulation cylinder can be adjusted by adjusting the number of cylindrical heat insulation units on the outside of the outer jacket.

[0013] A further technical solution of this utility model is: a gap is provided between the heat insulation cylinder and the outer jacket.

[0014] A further technical solution of this utility model is: the feeding pipe is inclined, and two feeding valves are provided on the feeding pipe, with a gap between the two feeding valves.

[0015] A further technical solution of this utility model is: a magnetic stirring ball is provided inside the inner cavity.

[0016] A further technical solution of this utility model is as follows: The hydrogen filtration device includes a gas guide sleeve and a filter installation assembly. The filter installation assembly is provided with multiple layers of air inlets and multiple layers of air outlets, which are alternately arranged. A first filter is provided between the air inlets and outlets of adjacent layers. The lower end of the gas guide sleeve is closed and the upper end is open. The gas guide sleeve is provided with an outer sleeve and an inner sleeve, with a space between the outer sleeve and the inner sleeve. The filter installation assembly is embedded in the inner sleeve. The outer sleeve and the inner sleeve are respectively provided with hydrogen inlet holes corresponding to the air inlets. The hydrogen inlet holes of the outer sleeve and the inner sleeve are connected by a guide tube. The inner sleeve is respectively provided with hydrogen outlet holes corresponding to the air outlets.

[0017] A further technical solution of this utility model is as follows: the filter installation assembly includes multiple support rings stacked in sequence, the first filter is sandwiched between adjacent support rings, and the air inlet and air outlet are alternately arranged on support rings of different layers.

[0018] A further technical solution of this utility model is as follows: The carbon purifier includes a flow guide cavity, the two ends of which are respectively closed by an air inlet cover plate and an air outlet cover plate. An air inlet hole and an air outlet hole are respectively provided in the middle of the air inlet cover plate and the middle of the air outlet cover plate. A partition plate is provided inside the flow guide cavity near the air outlet cover plate. An air guide hole is provided on the partition plate. A middle sleeve is provided in the middle of the flow guide cavity. One end of the middle sleeve is connected to the partition plate, and the other end is separated from the air inlet cover plate by a distance. An air inlet pipe is provided on the inner side of the air inlet cover plate corresponding to the air inlet hole. At least one second filter screen is provided inside the air inlet pipe. The air inlet pipe is inserted into the middle sleeve. There is a gap between the air inlet pipe and the middle sleeve. Carbon is filled between the outer wall of the middle sleeve and the inner wall of the flow guide cavity.

[0019] A further technical solution of this utility model is: the reactor is provided with a pressure relief pipe that communicates with the interior of the inner cavity, and the pressure relief pipe is provided with a pressure relief valve.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention fills the space between the inner cavity and outer jacket of the reactor with a phase change heat storage material, which stores the heat generated by the reaction. Simultaneously, an adjustable-height heat insulation cylinder is fitted over the outer jacket; by adjusting the height of the cylinder, its coverage area on the outer jacket can be adjusted, thereby regulating the heat dissipation rate. During use, the combined adjustment of heat storage and heat dissipation in this invention allows for better control of the internal temperature of the cavity, thus controlling and regulating the chemical reaction rate of the reactants inside the reactor. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a portable chemical hydrogen production device according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the reactor structure according to an embodiment of the present invention;

[0024] Figure 3 This is an explosion diagram of the reactor according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the hydrogen filtration device according to an embodiment of the present invention;

[0026] Figure 5 This is an exploded schematic diagram of the hydrogen filtration device according to an embodiment of the present invention;

[0027] Figure 6 This is a partial cross-sectional schematic diagram showing the location of the hydrogen filtration device according to an embodiment of the present invention;

[0028] Figure 7This is an exploded schematic diagram of the carbon purifier according to an embodiment of the present invention;

[0029] Figure 8 This is a cross-sectional schematic diagram of a carbon purifier according to an embodiment of the present invention;

[0030] Figure 9 This is a simplified structural diagram of three reactors connected in parallel according to an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the screw cap and screw edge of an embodiment of the present utility model;

[0032] Figure 11 This is a cross-sectional schematic diagram of the screw cap and the screw edge of this utility model when they are closed together.

[0033] Meaning of the labels in the attached diagram:

[0034] 1-Reactor; 1.1-Cylindrical insulation unit; 1.2-Feeding valve; 1.3-Feeding pipe; 1.4-Outer jacket; 1.5-Top cover; 1.6-Pressure relief pipe; 1.7-Screw cap; 1.8-Inner cavity; 1.9-Screw edge; 1.10-End of feeding pipe near the inner cavity; 1.11-Bottom plate; 1.12-Central hole of screw cap; 1.13-Limiting protrusion; 2-First-stage carbon purifier; 2.1-Guide cavity; 2.2-Outlet cover plate; 2.3-Inlet cover plate; 2.4-Inlet pipe; 2.5-Partition plate; 2.6-Gas duct; 2.7-Gas outlet; 2.8-Carbon; 2.9-Second filter; 2.10-Middle sleeve; 2.11-Gas inlet; 3-Secondary carbon purifier; 4-Gas duct; 5-Pipe; 6-Hydrogen filter; 6.1-Outer sleeve; 6.2-Inner sleeve; 6.3-Support ring; 6.4-Gas outlet; 6.5-Flange; 6.6-Guide pipe; 6.7-Hydrogen inlet; 6.8-Hydrogen outlet; 6.9-Gas inlet; 6.10-First filter. Detailed Implementation

[0035] The present invention will be further described below with reference to embodiments.

[0036] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0038] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0039] Example:

[0040] like Figure 1 The portable chemical hydrogen production device with controllable reaction shown in this embodiment includes a reactor 1, a primary carbon purifier 2, and a secondary carbon purifier 3.

[0041] like Figure 9 As shown, in operation, multiple reactors 1 can be connected in parallel as needed. This involves connecting the hydrogen output ports of multiple reactors 1 together and then connecting them to a main output pipeline. During operation, reactants are added to reactors 1 at intervals to achieve a stable and continuous output of hydrogen. The reactants added to reactors 1 can be an aqueous suspension formed by mixing magnesium powder and water, or an aqueous suspension formed by mixing silicon powder, sodium hydroxide, and water. The process of generating hydrogen through a chemical reaction between these substances is existing technology.

[0042] The advantage of using the chemical reaction of magnesium powder and water to produce hydrogen is that magnesium has a high hydrogen-carrying capacity and its reaction product, magnesium hydroxide, can be recycled. It has great potential in distributed emergency response in the future. In the medical and health care industry, and even in the hydrogen fuel cell industry, it can be used safely and stably to output hydrogen, which is the premise and purpose of its convenience.

[0043] The advantage of using the chemical reaction of silicon powder, sodium hydroxide and water to produce hydrogen is that silicon powder can be made from some waste generated in the semiconductor and photovoltaic industries. Using silicon powder to produce hydrogen has unique convenience and ease of use in some emergency situations.

[0044] like Figure 2 and Figure 3As shown, reactor 1 is cylindrical in shape and operates vertically. In this embodiment, reactor 1 includes an inner cavity 1.8, an outer jacket 1.4, and a heat insulation cylinder. The outer jacket 1.4 is fitted over the inner cavity 1.8. In this embodiment, the inner cavity 1.8 is longer than the outer jacket 1.4. The bottom surface of the outer jacket 1.4 is not lower than the bottom surface of the inner cavity 1.8, and both the bottom surfaces of the outer jacket 1.4 and the inner cavity 1.8 are simultaneously sealed by a bottom plate 1.11. The top of the inner cavity 1.8 extends above the outer jacket 1.4. There is a gap between the inner cavity 1.8 and the outer jacket 1.4. The space between the inner cavity 1.8 and the outer jacket 1.4 is filled with phase change heat storage material. The upper port of the space between the inner cavity 1.8 and the outer jacket 1.4 is closed by a top cover 1.5. Phase change heat storage material can be added or removed by opening the top cover 1.5. The phase change heat storage material may include paraffin wax or other phase change materials, and the paraffin wax may be of a type that can withstand temperatures from 50 to 70°C. In addition, thermally conductive fillers such as graphite powder and graphene powder can be incorporated into phase change materials such as paraffin wax to adjust the material's thermal conductivity, achieving a heat transfer capacity no less than that of the materials used in the inner cavity and outer casing. For example, one phase change heat storage material has the composition of 8% graphene + 20% carbon fiber + 72% paraffin wax, and its heat storage capacity is reduced to about 50% of that of pure paraffin wax. Phase change heat storage materials can store the heat generated by chemical reactions inside the reactor. Filling different amounts of phase change heat storage materials will result in different heat storage capacities. The amount of phase change heat storage material used is determined based on the maximum number of additions and the heat released in a single reaction, and its total latent heat is less than the maximum number of additions multiplied by the heat released in a single reaction.

[0045] In this embodiment, both the inner cavity 1.8 and the outer jacket 1.4 are wavy, which increases the surface area of ​​the inner wall of the inner cavity 1.8 and the outer wall of the outer jacket 1.4, thereby improving the heat conduction rate.

[0046] The heat insulation cylinder has a heat insulation function and can be made of plastic. The heat insulation cylinder is fitted over the outer casing. In this embodiment, the heat insulation cylinder consists of three cylindrical heat insulation units 1.1, each made of heat insulation plate. The cylindrical heat insulation units 1.1 can be stacked sequentially along the height direction. By adjusting the number of cylindrical heat insulation units 1.1 fitted over the outer casing 1.4, the height of the heat insulation cylinder can be adjusted, thereby adjusting the coverage area of ​​the heat insulation cylinder on the outer casing 1.4. The larger the coverage area, the better the heat insulation capacity for reactor 1, and the less easily the heat generated inside reactor 1 dissipates; conversely, a smaller coverage area will reduce the heat insulation capacity for reactor 1, making it easier for reactor 1 to dissipate heat. In this embodiment, a gap is provided between the heat insulation cylinder and the outer casing 1.4, allowing a certain amount of air between them. Since air is a low thermal conductivity material, this reduces heat dissipation, and restricting airflow also affects the heat dissipation effect generated by air convection.

[0047] By coordinating and adjusting heat storage and dissipation during use, the temperature inside the cavity can be better regulated, thereby controlling and regulating the chemical reaction rate of the reactants inside the cavity.

[0048] In this embodiment, the reactor 1 is equipped with a feeding pipe 1.3 that communicates with the interior of the inner cavity 1.8. The end 1.10 of the feeding pipe near the inner cavity is inclined at an angle of not less than 45°. The feeding pipe 1.3 is equipped with two feeding valves 1.2, which are spaced apart, and the capacity between the two feeding valves 1.2 is not less than 150 ml. The feeding during use can be controlled by the two feeding valves 1.2.

[0049] In this embodiment, the reactor 1 is provided with a pressure relief pipe 1.6 that communicates with the interior of the inner cavity 1.8. The pressure relief pipe 1.6 is equipped with a pressure relief valve. The pressure relief valve can better ensure the safe use of the portable chemical hydrogen production device. When the gas pressure inside the reactor 1 exceeds the set value, it will be discharged through the pressure relief valve.

[0050] The upper port of the inner cavity 1.8 of reactor 1 is fixedly provided with a swivel edge 1.9, and a screw cap 1.7 is fitted onto the swivel edge 1.9. The central hole 1.12 of the screw cap is the hydrogen outlet port of the reactor. Both the swivel edge 1.9 and the screw cap 1.7 are made of metal. The specific structure of the screw cap 1.7 fitting onto the swivel edge 1.9 is as follows: Figure 10 and Figure 11 As shown, the screw-in edge 1.9 is square with rounded corners. Four limiting protrusions 1.13 are evenly distributed on the inner side of the underside of the screw cap 1.7. The entrance formed under the screw cap 1.7 is also square, matching the shape of the screw-in edge 1.9. When closing, the screw-in edge 1.9 enters through the entrance under the screw cap 1.7. Then, rotating the screw cap 1.7 restricts the rounded corners of the screw-in edge 1.9 to the inner side of the limiting protrusions 1.13.

[0051] A hydrogen filter device 6 is installed inside the hydrogen output port of reactor 1, such as... Figures 4 to 6As shown, the hydrogen filtration device 6 in this embodiment includes a gas guide sleeve and a filter installation assembly. The filter installation assembly includes multiple support rings 6.3 stacked sequentially, with a first filter 6.10 clamped between adjacent support rings 6.3. The first filter 6.10 is a filter membrane with filter pores of 0.1 micrometers in size. Inlet holes 6.9 and outlet holes 6.4 are alternately arranged on different layers of support rings 6.3, i.e., multiple layers of inlet holes 6.9 and multiple layers of outlet holes 6.4 are provided. The first filter 6.10 is located between the inlet holes 6.9 and outlet holes 6.4 of different layers. Hydrogen entering through the inlet hole 6.9 will be filtered by the first filter 6.10 and then flow out through the outlet hole 6.4. The gas guide sleeve is closed at the lower end and open at the upper end. It has an outer sleeve 6.1 and an inner sleeve 6.2, with a space between them. A filter assembly is embedded inside the inner sleeve 6.2. Hydrogen inlet holes 6.7 are provided on the outer sleeve 6.1 and inner sleeve 6.2 corresponding to the inlet holes 6.9, respectively. The hydrogen inlet holes 6.7 of the outer sleeve 6.1 and inner sleeve 6.2 are connected by a guide pipe 6.6. Hydrogen outlet holes 6.8 are provided on the inner sleeve 6.2 corresponding to the outlet holes 6.4, respectively. The upper end of the outer sleeve 6.1 has a flange 6.5. The hydrogen filtration device 6 is integrally embedded in the hydrogen output port of the reactor 1. The flange 6.5 of the gas guide sleeve is supported on the top of the swivel edge 1.9. When the cap 1.7 is closed on the top of the swivel edge 1.9, the flange 6.5 of the gas guide sleeve is clamped between the cap 1.7 and the swivel edge 1.9, thus completing the fixation. Additionally, there is a gap between the outer sleeve 6.1 and the inner wall of the inner cavity 1.8. The air guide sleeve and support ring 6.3 can be made of stainless steel or plastic.

[0052] like Figure 6 As shown ( Figure 6 (The dashed line in the middle shows the flow path of hydrogen). During use, the hydrogen generated inside the inner cavity 1.8 will be guided by the guide tube 6.6, enter the filter installation assembly through the air inlet 6.9, and then flow out through the air outlet 6.4 after being filtered by the first filter 6.10 into the space between the outer sleeve 6.1 and the inner sleeve 6.2. Finally, it will flow upward from the upper end of the space between the outer sleeve 6.1 and the inner sleeve 6.2.

[0053] In this embodiment, gas guide cylinders 4 are threadedly fixed to the hydrogen output ports of reactor 1, primary carbon purifier 2, and secondary carbon purifier 3. The gas guide cylinder 4 of reactor 1 is connected to the hydrogen input port of primary carbon purifier 2 via pipe 5, and the gas guide cylinder 4 of primary carbon purifier 2 is connected to the hydrogen input port of secondary carbon purifier 3 via pipe 5. In another embodiment, the pipe connecting primary carbon purifier 2 and secondary carbon purifier 3 can be equipped with a cold source, so that hydrogen will be condensed and purified under the action of the cold source when passing through the pipe. During use, the hydrogen generated inside reactor 1 will first be filtered by hydrogen filter device 6, then purified by primary carbon purifier 2, and finally purified by secondary carbon purifier 3. If the device is pressurized, the above-mentioned pipe 5 can be a rigid metal pipe; otherwise, a plastic pipe can be used. Valves can be installed on the gas guide cylinders 4, and the entire device can achieve a closed pressure resistance of 2 to 10 atmospheres.

[0054] The first-stage carbon purifier 2 and the second-stage carbon purifier 3 have the same structural principle, except that the carbon used inside is different in pore size. The first-stage carbon purifier 2 uses carbon with a larger pore size (pore size > 50nm), while the second-stage carbon purifier 3 uses carbon with a smaller pore size (pore size < 2nm).

[0055] like Figure 7 and Figure 8As shown, the carbon purifier in this embodiment includes a flow guiding cavity 2.1. The upper and lower ends of the flow guiding cavity 2.1 are respectively closed by an air outlet cover plate 2.2 and an air inlet cover plate 2.3. An air inlet hole 2.11 and an air outlet hole 2.7 are respectively provided in the middle of the air inlet cover plate 2.3 and the middle of the air outlet cover plate 2.2. The air inlet hole 2.11 and the air outlet hole 2.7 are the hydrogen input port and hydrogen output port of the carbon purifier. Inside the flow guide cavity 2.1, near the outlet cover plate 2.2, there is a partition 2.5. There is a gap between the partition 2.5 and the outlet cover plate 2.2. The partition 2.5 has three air guide holes 2.6. A central sleeve 2.10 is located in the middle of the flow guide cavity 2.1. The upper end of the central sleeve 2.10 is connected to the partition 2.5, and the upper end of the central sleeve 2.10 is closed. The lower end of the central sleeve 2.10 is separated from the inlet cover plate 2.3 by a distance, and the lower end of the central sleeve 2.10 is open. Inside the inlet cover plate 2.3, corresponding to the inlet hole 2.11, there is an inlet pipe 2.4. The inlet pipe 2.4 contains three layers of second filters 2.9, with filter pore diameters of 1 mm, 1 mm, and 0.5 mm, respectively. The intake pipe 2.4 is inserted into the middle sleeve 2.10, with a gap between the intake pipe 2.4 and the middle sleeve 2.10. There is also a distance between the upper end face of the intake pipe 2.4 and the inner end face of the middle sleeve 2.10. Carbon 2.8 is filled between the outer wall of the middle sleeve 2.10 and the inner wall of the guide cavity 2.1. The guide cavity 2.1, intake pipe 2.4, outlet cover 2.2, and intake cover 2.3 can be made of metal or plastic.

[0056] like Figure 8 As shown ( Figure 8 (The dashed line shows the hydrogen flow path). During use, hydrogen enters through the inlet port 2.11, then passes through the inlet pipe 2.4. The second filter 2.9 inside the inlet pipe 2.4 filters the hydrogen, which then flows out from the upper end of the inlet pipe 2.4. It then flows into the space between the outer wall of the middle sleeve 2.10 and the inner wall of the guide cavity 2.1 through the gap between the inlet pipe 2.4 and the middle sleeve 2.10. After being purified by carbon 2.8, it flows upward through the guide port 2.6 and finally out of the carbon purifier through the outlet port 2.7, completing the hydrogen purification process.

[0057] In this embodiment, the inner cavity 1.8 is equipped with a magnetic stirring ball. The inner cavity 1.8, outer shell 1.4, and heat insulation cylinder are all made of austenitic non-magnetic material. The inner cavity 1.8 and outer shell 1.4 can be austenitic stainless steel, and the heat insulation cylinder can be plastic. The function of the magnetic stirring ball is to appropriately stir the reactants inside the inner cavity. During use, the operator can hold a neodymium iron boron magnet, move it to the outer edge of the reactor, and move the neodymium iron boron magnet freely along the outer edge of the reactor. Under the magnetic action, the magnetic stirring ball inside will move continuously. The movement of the magnetic stirring ball does not need to be regular; as long as the magnetic stirring ball can move, it can appropriately stir the reactants inside. Under appropriate stirring, the reactants inside can be accelerated, thereby regulating the reaction rate. By setting up a magnetic stirring ball, the problem of how to stir the reactants inside a closed reactor is solved.

[0058] The inner wall of the 1.8-inch cavity can be coated with a PTFE layer.

[0059] The portable chemical hydrogen production device in this embodiment uses a mixture of silicon powder, sodium hydroxide powder, and water to generate hydrogen. The method of use is as follows:

[0060] 1. Assemble the portable chemical hydrogen production device according to its structure, including reactor 1 and carbon purifier. The carbon material inside the carbon purifier and the phase change heat storage material between the inner cavity 1.8 and the outer jacket 1.4 should be filled in advance, and the magnetic stirring ball should be installed inside the inner cavity in advance.

[0061] 2. Complete the connection between components according to the order of reactor 1 and carbon purifier;

[0062] 3. For the first time, open both feeding valves 1.2. First, add 150 ml of water into reaction chamber 1 through feeding pipe 1.3. Then, mix 10 g of silicon powder and 30 g of sodium hydroxide powder with 100 ml of water in a test tube (made of plastic) and shake to make a suspension. Then, add the suspension into reaction chamber 1 through feeding pipe 1.3. Next, add 50 ml of water through feeding pipe 1.3 to rinse any residual sodium hydroxide solution on feeding pipe 1.3. Then, close both feeding valves 1.2.

[0063] 4. The second time, mix 10 grams of fixed-packaged silica powder and 100 ml of water in a test tube (made of plastic) and shake to make a suspension. Then add it through the feeding pipe 1.3. The addition method is as follows: first open the feeding valve 1.2 near the inlet of the feeding pipe 1.3, close the feeding valve 1.2 away from the inlet of the feeding pipe 1.3, add the suspension, then open the feeding valve 1.2 away from the inlet of the feeding pipe 1.3, the suspension will enter the reactor 1, and finally close the feeding valve 1.2 near the inlet of the feeding pipe 1.3.

[0064] 5. Mix 30 grams of sodium hydroxide powder and 100 ml of water in a test tube (made of plastic) and shake to make a suspension. Then add it to reactor 1 again through step 4.

[0065] 6. Add water to reactor 1 in the manner described in step 4. The amount to be added is calculated according to Table 1 below. It is the amount of water required for the second time minus the amount of water already added in steps 4 and 5, i.e., 450-100-100=250.

[0066] Table 1

[0067]

[0068] 7. Repeat steps 5 to 7 according to the usage in Table 1 to complete the remaining third to sixth supplements.

[0069] The silicon powder used above can be vacuum-packed or gas-filled, and individually packaged in 10-gram packets. Sodium hydroxide powder is also packaged in sealed containers, individually packaged in 30-gram packets.

[0070] For a more stable and continuous supply of hydrogen during operation, two reactors (1) can be used in parallel. The pre-calculated masses of silicon, sodium hydroxide, and water can be added to different reactors (1) at equal intervals according to the order of addition. To obtain a more stable and larger quantity of hydrogen, more reactors (1) can be used in parallel, maintaining equal intervals between them, with the added materials added to the reactors (1) according to the pre-calculated masses of silicon, sodium hydroxide, and water. The mixed waste liquid generated after the reaction can be collected and further treated for sodium silicate extraction.

[0071] The portable chemical hydrogen production device in this embodiment uses a mixture of magnesium powder and water to generate hydrogen. The method of use is as follows:

[0072] 1. Assemble the portable chemical hydrogen production device according to its structure, including reactor 1 and carbon purifier. The carbon material inside the carbon purifier and the phase change heat storage material between the inner cavity 1.8 and the outer jacket 1.4 are filled in advance. The magnetic stirring ball is installed inside the inner cavity 1.8 in advance.

[0073] 2. Complete the connection between components according to the order of reactor 1 and carbon purifier;

[0074] 3. First, after opening the magnesium powder bag, dissolve it in 70 ml of anhydrous ethanol to form a suspension. Then, add it through the feeding pipe 1.3. The addition method is as follows: first, open the feeding valve 1.2 near the inlet of the feeding pipe 1.3, close the feeding valve 1.2 away from the inlet of the feeding pipe 1.3, add the suspension, then open the feeding valve 1.2 away from the inlet of the feeding pipe 1.3, and the suspension will enter reactor 1. Finally, close the feeding valve 1.2 near the inlet of the feeding pipe 1.3; hydrogen gas will then be generated.

[0075] 4. Add 100 grams of water through the feeding pipe using the method shown in step 3. The water can be warm water heated to 60°C.

[0076] 5. After a 20-minute interval (at a fixed time), add the mixture of magnesium powder and anhydrous ethanol into the feed pipe 1.3 using the method shown in step 3.

[0077] 6. Add 100 grams of water through the feeding pipe 1.3 using the method shown in step 3. The water can be warm water heated to 60°C.

[0078] 7. Repeat steps 5 and 6 for a total of 8 times. When the solution is almost full in reactor 1, stop adding more solution.

[0079] The additional quantities added in the above operations will be shown in Table 2 below.

[0080]

[0081] The magnesium powder used above can be packaged using inert gas or vacuum packaging.

[0082] During operation, for a more stable and continuous supply of hydrogen, two reactors (1) can be used in parallel. Magnesium and water, added at equal intervals according to the order of addition, can be added to different reactors (1) according to pre-calculated quantities. For an even more stable and larger quantity of hydrogen, more reactors (1) can be used in parallel, maintaining equal time intervals, with magnesium and water added according to the pre-calculated order of addition. The mixed waste liquid from the reaction can be collected and further treated for sodium hydroxide extraction.

[0083] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. A portable chemical hydrogen production device with controllable reaction, characterized in that: The device includes at least one reactor and at least one carbon purifier. The hydrogen output port of the reactor is connected to the hydrogen input port of the carbon purifier via a pipeline. A hydrogen filter is provided inside the hydrogen output port of the reactor. The reactor includes an inner cavity, an outer jacket covering the inner cavity, and a heat insulation cylinder covering the outer jacket. The space between the inner cavity and the outer jacket is filled with a phase change heat storage material. The height of the heat insulation cylinder is adjustable, and the coverage area of ​​the heat insulation cylinder outside the outer jacket can be adjusted by adjusting the height of the heat insulation cylinder. The reactor is provided with a feeding pipe communicating with the interior of the inner cavity, and a feeding valve is provided on the feeding pipe.

2. The portable chemical hydrogen production device with controllable reaction according to claim 1, characterized in that: Both the inner cavity and the outer sleeve are wavy, thereby increasing the surface area of ​​the inner wall of the inner cavity and the outer wall of the outer sleeve.

3. The portable chemical hydrogen production device with controllable reaction according to claim 1, characterized in that: The heat insulation cylinder is composed of two or more cylindrical heat insulation units, which can be stacked sequentially along the height direction. The height of the heat insulation cylinder can be adjusted by adjusting the number of cylindrical heat insulation units fitted on the outside of the outer jacket.

4. The portable chemical hydrogen production device with controllable reaction according to claim 1, characterized in that: There is a gap between the heat insulation cylinder and the outer jacket.

5. The portable chemical hydrogen production device with controllable reaction according to claim 1, characterized in that: The feeding pipe is inclined, and two feeding valves are provided on the feeding pipe, with a gap between the two feeding valves.

6. The portable chemical hydrogen production device with controllable reaction according to claim 1, characterized in that: The interior of the cavity is equipped with a magnetic stirring ball.

7. The portable chemical hydrogen production device with controllable reaction according to claim 1, characterized in that: The hydrogen filtration device includes a gas guide sleeve and a filter installation assembly. The filter installation assembly has multiple layers of air inlets and multiple layers of air outlets, which are alternately arranged. A first filter is provided between the air inlets and outlets of adjacent layers. The lower end of the gas guide sleeve is closed and the upper end is open. The gas guide sleeve has an outer sleeve and an inner sleeve, with a space between the outer sleeve and the inner sleeve. The filter installation assembly is embedded in the inner sleeve. The outer sleeve and the inner sleeve have hydrogen inlet holes corresponding to the air inlets, and the hydrogen inlet holes of the outer sleeve and the inner sleeve are connected by a guide tube. The inner sleeve has hydrogen outlet holes corresponding to the air outlets.

8. The portable chemical hydrogen production device with controllable reaction according to claim 7, characterized in that: The filter installation assembly includes a plurality of support rings stacked in sequence, with the first filter sandwiched between adjacent support rings, and the air inlet and air outlet alternately arranged on the support rings of different layers.

9. The portable chemical hydrogen production device with controllable reaction according to claim 1, characterized in that: The carbon purifier includes a flow guide cavity, the two ends of which are respectively sealed by an air inlet cover and an air outlet cover. An air inlet hole and an air outlet hole are respectively provided in the middle of the air inlet cover and the middle of the air outlet cover. A partition is provided inside the flow guide cavity near the air outlet cover, and the partition has air guide holes. A central sleeve is provided in the middle of the flow guide cavity, one end of which is connected to the partition, and the other end is spaced apart from the air inlet cover. An air inlet pipe is provided on the inner side of the air inlet cover corresponding to the air inlet hole. At least one second filter screen is provided inside the air inlet pipe. The air inlet pipe is inserted into the central sleeve, and there is a gap between the air inlet pipe and the central sleeve. Carbon is filled between the outer wall of the central sleeve and the inner wall of the flow guide cavity.

10. The portable chemical hydrogen production device with controllable reaction according to claim 1, characterized in that: The reactor is provided with a pressure relief pipe that communicates with the interior of the inner cavity, and the pressure relief pipe is provided with a pressure relief valve.

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