Uniaxial reaction device and magnesium hydride production method
By designing forward and reverse material-turning surfaces in the single-shaft reactor, combined with pusher blades and a sealing structure, the problem of incomplete material discharge was solved, achieving full reaction and efficient discharge of materials, thus improving production efficiency and equipment stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-04-03
AI Technical Summary
Existing single-shaft reactors lack effective discharge design, resulting in the incomplete discharge of materials inside the reactor after the reaction, which affects production efficiency, increases maintenance costs, and may affect the long-term stability of the equipment.
A single-axis reaction device was designed, comprising a reactor body and a stirring shaft. The blades are equipped with forward-rotating and reverse-rotating material-turning surfaces. The forward and reverse rotation of the stirring shaft realizes the circumferential and axial movement of the material. Combined with the pusher blades and sealing structure, it ensures that the material reacts fully and is completely discharged.
It improves production efficiency, reduces maintenance costs, enhances the long-term stability of equipment, and optimizes reaction efficiency and quality by independently controlling the movement of materials.
Smart Images
Figure CN121775754A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of chemical production equipment, specifically relating to a single-axis reaction device and a method for producing magnesium hydride. Background Technology
[0002] Hydrogen energy, as a clean and efficient energy source, holds significant strategic importance in addressing the global energy crisis and environmental pollution. Developing efficient hydrogen storage technologies is crucial for reducing hydrogen costs and enabling large-scale application. Magnesium-based hydrogen storage materials can reversibly store and release hydrogen under certain temperature and pressure conditions, possessing advantages such as large hydrogen storage capacity, high energy density, safety, efficiency, convenience, high hydrogen purity, and excellent cycle life performance, making them considered one of the effective means of storing and transporting hydrogen in the future. However, their high mechanical stability (enthalpy change of hydrogen release ΔH = 75 kJ / mol) and slow dehydrogenation kinetics below 300°C limit the practical application of magnesium-based hydrogen storage materials. Whether using magnesium-based hydrogen storage materials to absorb hydrogen to produce magnesium hydride materials, or using magnesium hydride materials to produce hydrogen, it is necessary to place the magnesium-based hydrogen storage materials or magnesium hydride materials into a reactor and continuously react for a sufficient time under stable reaction conditions.
[0003] Existing single-axis reactors lack effective discharge design, and often cannot ensure the complete discharge of materials inside the reactor after the reaction is completed. This not only affects the production efficiency of the reactor, but also increases the maintenance cost of the equipment and may affect the long-term stability of the reactor. Summary of the Invention
[0004] The purpose of this application is to provide a single-axis reaction device and a continuous production system, which aims to improve the discharge design.
[0005] To achieve the above objectives, this application provides a uniaxial reaction apparatus, comprising: The reactor body has an inlet and an outlet arranged axially at intervals on its outer peripheral wall; the reactor body also has a material flow channel for containing reactants and an outlet gap higher than the material flow channel formed inside the reactor body along the axial direction, the outlet gap being used to connect the material flow channel and the outlet. A stirring shaft is coaxially mounted inside the reactor body; Multiple blades are mounted on the stirring shaft, and each blade has a forward-rotating turning surface and a reverse-rotating turning surface that are opposite to each other. When the stirring shaft rotates forward, it drives all the blades to contact the reactants in the material flow channel with the forward-rotating material-turning surface, thereby causing the reactants to move circumferentially around the stirring shaft. When the stirring shaft rotates in reverse, it drives all the blades to contact the reactants in the material flow channel with the reverse-rotating material-turning surface, thereby causing the reactants to move to the discharge port through the discharge gap.
[0006] In some embodiments, the reactants include magnesium particles; The forward-rotating material-turning surface extends radially along the stirring shaft, and the reverse-rotating material-turning surface is inclined towards the discharge port along the axial direction. The forward-rotating material-turning surface is used to drive magnesium particles to move circumferentially within the reactor body so as to generate magnesium hydride particles with the hydrogen gas introduced into the reactor body.
[0007] In some embodiments, a blade structure is formed on the forward-rotating material-turning surface.
[0008] In some embodiments, the angle between the forward-rotating turning surface and the reverse-rotating turning surface is 4° to 10°.
[0009] In some embodiments, the blades are arranged in multiple sets along the axial direction on the stirring shaft, and each set of blades includes two blades located in the same radial plane and arranged symmetrically.
[0010] In some embodiments, the feed inlet is relatively close to the front end of the reactor body, the discharge outlet is relatively close to the rear end of the reactor body, and a first pusher blade is also installed on the stirring shaft. The first pusher blade is located between the feed inlet and the front end, and the first pusher blade can apply a force to the material toward the rear end.
[0011] In some embodiments, a second pusher blade is also installed on the stirring shaft. The second pusher blade is located between the discharge port and the rear end, and the second pusher blade is capable of applying a force toward the front end to the material.
[0012] In some embodiments, the single-axis reaction apparatus further includes a drive element and a sealing structure, the drive element extending into the reactor body and connected to the stirring shaft, and the sealing structure for sealing the drive element and the reactor body.
[0013] In some embodiments, the reactor body is fitted with a jacket.
[0014] In some embodiments, a hollow portion is formed inside the stirring shaft.
[0015] This application also provides a method for producing magnesium hydride, implemented using a single-axis reaction apparatus as described above, the method comprising: The stirring shaft is driven to rotate forward to carry out the magnesium hydride reaction; The stirring shaft is reversed to discharge the material after the reaction.
[0016] In some implementations, the reverse stroke of the stirring shaft is limited when the stirring shaft is reversed to discharge the material after the reaction.
[0017] Through the above technical solutions, the single-axis reaction device and continuous production system provided in this application have the following beneficial effects: The magnesium particles used in production enter the reactor body through the feed inlet. The stirring shaft is driven to rotate forward so that the rotating blades' turning surface comes into contact with the magnesium particles, causing the magnesium particles to move circumferentially and react fully with hydrogen to generate magnesium hydride particles. After the reaction is completed, a large amount of powder material will remain in the reactor body. The stirring shaft is driven to rotate in reverse so that the rotating blades' turning surface comes into contact with the powder material, causing the powder material to move axially towards the discharge port, thereby achieving discharge.
[0018] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description
[0019] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the uniaxial reaction device in a specific embodiment of this application; Figure 2 This is a schematic diagram of the blade structure in a specific embodiment of this application.
[0020] Explanation of reference numerals in the attached figures 100. Single-shaft reaction device; 1. Reactor body; 2. Stirring shaft; 3. Discharge baffle; 4. Blade; 41. Forward rotation turning surface; 42. Reverse rotation turning surface; 43. Blade structure; 5. Feed inlet; 6. Discharge outlet; 7. First pusher blade; 8. Second pusher blade; 9. Discharge gap; 10. Material flow channel. Detailed Implementation
[0021] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.
[0022] The terminology of the single-axis reaction apparatus 100 and the continuous production system according to this application is described below with reference to the accompanying drawings.
[0023] like Figure 1 and Figure 2 As shown, a specific embodiment of this application provides a single-axis reaction device 100, including a reactor body 1, a stirring shaft 2, and blades 4. The outer peripheral wall of the reactor body 1 is provided with an inlet 5 and an outlet 6 arranged axially at intervals. The interior of the reactor body 1 is formed with a material flow channel 10 for containing reactants and an outlet gap 9 higher than the material flow channel 10. The outlet gap 9 is used to connect the material flow channel 10 and the outlet 6. The stirring shaft 2 is coaxially installed inside the reactor body 1. Multiple blades 4 are installed on the stirring shaft 2, and each blade 4 has a forward-rotating turning surface 41 and a reverse-rotating turning surface 42 that are opposite to each other.
[0024] When the stirring shaft 2 rotates forward, the stirring shaft 2 drives all the blades 4 to contact the reactants in the material flow channel 10 with the forward rotating turning surface 41, thereby driving the reactants to move around the stirring shaft 2 in a circumferential direction; when the stirring shaft 2 rotates in reverse, the stirring shaft 2 drives all the blades 4 to contact the reactants in the material flow channel 10 with the reverse rotating turning surface 42, thereby causing the reactants to move to the discharge port 6 through the discharge gap 9.
[0025] The uniaxial reactor 100 in a specific embodiment of this application can be used to absorb hydrogen from magnesium-based hydrogen storage materials to produce magnesium hydride particles. The reactants include magnesium particles and hydrogen gas. The magnesium particles and hydrogen gas enter the reactor body 1 through the feed port 5 and react under the stirring of the blades 4. Specifically, by driving the stirring shaft 2 to rotate forward, the forward-rotating turning surface 41 of the blades 4 comes into contact with the magnesium particles, thereby causing the magnesium particles to move circumferentially and react fully with the hydrogen gas to generate magnesium hydride particles. After the reaction is completed, by driving the stirring shaft 2 to rotate in reverse, the reverse-rotating turning surface 42 of the blades 4 comes into contact with the powder material, thereby causing the powder material to move axially towards the discharge port 6 to achieve discharge. If the material is not completely discharged after the reaction is completed, it will not only affect the production efficiency, but also increase the maintenance cost of the uniaxial reactor 100, and may affect the long-term stability of the uniaxial reactor 100. In this application, the discharge design of the uniaxial reactor 100 is improved by setting the blades 4, thereby avoiding the above-mentioned problems.
[0026] Specifically, the forward-rotating turning surface 41 extends radially along the stirring shaft 2, while the reverse-rotating turning surface 42 is inclined axially towards the discharge port 6. The forward-rotating turning surface 41 is used to drive the magnesium particles to move circumferentially within the reactor body 1 to generate magnesium hydride particles with the hydrogen gas introduced into the reactor body 1. When the forward-rotating turning surface 41 comes into contact with the reactants, it does not exert an axial force on the reactants; that is, the forward-rotating turning surface 41 does not push the reactants to move axially during rotation, but only serves to turn the materials. In other words, the stirring shaft 2 can drive the blades 4 to continuously agitate the materials within the reactor body 1 at a high speed without being limited by the reaction time. Therefore, it can improve the turning effect of the blades 4 on the reactants, thereby improving the mixing effect of the reactants in the production process and thus increasing production efficiency.
[0027] The reversible turning surface 42 is inclined axially toward the discharge port 6. In other words, when the reversible turning surface 42 comes into contact with the reactant, it exerts an axial force on the reactant toward the discharge port 6. That is, during the rotation of the reversible turning surface 42, it pushes the reactant toward the discharge port 6, thus playing a pushing role. When production is paused or completed, if it is necessary to drain the material from the reactor body 1, this is achieved by the reversible turning surface 42 pushing the material from the reactor body 1, thereby improving the practicality of the single-axis reactor 100.
[0028] Furthermore, a blade structure 43 is formed on the forward-rotating material-turning surface 41. During rotation, the blade structure 43 breaks up the material inside the reactor body 1 to prevent the reaction material from clumping together and affecting the bonding between the reaction materials, thereby improving production efficiency.
[0029] Furthermore, the angle between the forward-rotating turning surface 41 and the reverse-rotating turning surface 42 is 4°~10°.
[0030] It should be noted that, in the specific embodiments of this application, "axial" refers to the direction of the center line of the stirring shaft, "forward rotation" refers to the stirring shaft 2 rotating in the forward direction, and "reverse rotation" refers to the stirring shaft 2 rotating in the reverse direction. The specific directions of the forward and reverse rotation are shown in the accompanying drawings of the specification.
[0031] In some embodiments, multiple sets of blades 4 are arranged axially on the stirring shaft 2, and each set of blades 4 includes two blades 4 located in the same radial plane and arranged symmetrically, so as to improve the material turning effect of the blades 4.
[0032] Those skilled in the art will understand that this application is not limited to the number and arrangement of the blades 4 described above. Other numbers and arrangements of blades 4 are also possible. For example, each group of blades 4 may include four blades 4, and the included angle between two adjacent blades 4 in the same group of blades 4 is 90°. Other numbers and arrangements of blades 4 that can be implemented should also be within the scope of protection of this application.
[0033] In some embodiments, the feed inlet 5 is relatively close to the front end of the reactor body 1, and the discharge outlet 6 is relatively close to the rear end of the reactor body 1. A first pusher blade 7 is also installed on the stirring shaft 2, located between the feed inlet 5 and the front end, and the first pusher blade 7 can apply a force to the material towards the rear end. A second pusher blade 8 is also installed on the stirring shaft 2, located between the discharge outlet 6 and the rear end, and the second pusher blade 8 can apply a force to the material towards the front end.
[0034] Magnesium particles, after entering the discharge port 6, may drift and fall between the front end of the reactor body 1 and the feed port 5. By providing the first pusher blade 7, the magnesium particles can be pushed towards the blade 4, allowing them to be fully reacted due to the turning action of the blade 4, thereby improving reaction efficiency and the practicality and reliability of the single-axis reactor 100. Magnesium hydride particles may drift and fall between the discharge port 6 and the rear end. By providing the second pusher blade 8, the magnesium hydride particles can be pushed towards the discharge port 6, allowing them to flow smoothly out of the discharge port 6, thus improving the practicality and reliability of the single-axis reactor 100.
[0035] Specifically, the first pusher blade 7 and the second pusher blade 8 are both helical blades with opposite rotation directions. The rotation of the stirring shaft 2 drives the first pusher blade 7 and the second pusher blade 8 to apply opposite forces along the axial direction.
[0036] In some embodiments, the single-axis reaction device 100 further includes a drive element and a sealing structure, the drive element extending into the reactor body 1 and connected to the stirring shaft 2, and the sealing structure for sealing the drive element and the reactor body 1.
[0037] Specifically, the drive unit consists of a drive motor and a reducer connected in series. The reducer is connected to the stirring shaft 2. The sealing structure uses a magnetic coupler to seal the gap between the reducer and the reactor body 1, thereby achieving a seal on the reactor body 1. The inner magnet of the magnetic coupler is connected to the stirring shaft 2, and the outer magnet of the magnetic coupler is connected to the output shaft of the reducer. The output shaft of the reducer is connected via a coupling to achieve synchronous torque transmission.
[0038] As will be understood by those skilled in the art, the structures of the drive motor, reducer and magnetic coupler are well known to those skilled in the art and are not part of the core improvement of this application, and therefore will not be described in detail here.
[0039] In some embodiments, the reactor body 1 is fitted with a jacket, and a heat exchange medium is introduced into the jacket. The temperature inside the reactor body 1 is adjusted by regulating the temperature of the heat exchange medium so that the temperature inside the reactor body 1 reaches the temperature required for production, thereby improving the practicality of the single-axis reactor 100.
[0040] Furthermore, the axial length of the jacket is greater than or equal to the axial distance between the inlet 5 and the outlet 6 on the reactor body 1, so as to homogenize the temperature of the entire reactor body 1 and improve the reliability of the single-axis reactor 100. In addition, during reaction stages requiring heat dissipation, excess reaction heat can be absorbed and displaced by the heat exchange medium, thereby lowering the temperature inside the reactor body 1. The higher-temperature heat exchange medium flows out to the outside of the jacket for cooling, and the cooled heat exchange medium then flows back into the jacket.
[0041] In some embodiments, a hollow section is formed inside the stirring shaft 2, and a heat exchange medium is introduced into the hollow section. The temperature inside the reactor body 1 is adjusted by adjusting the temperature of the heat exchange medium so that the temperature inside the reactor body 1 reaches the temperature required for production, thereby improving the practicality of the single-shaft reactor 100.
[0042] Furthermore, the axial length of the hollow section is greater than or equal to the axial distance between the inlet 5 and outlet 6 on the reactor body 1, so as to homogenize the temperature of the entire reactor body 1 and improve the reliability of the single-axis reactor 100. In addition, during reaction stages requiring heat dissipation, excess reaction heat can be absorbed and displaced by the heat exchange medium to achieve a temperature drop within the reactor body 1. The higher-temperature heat exchange medium flows out of the hollow section for cooling, and the cooled heat exchange medium then flows back into the hollow section.
[0043] It should be noted that the gaseous materials required for production can enter the reactor body 1 either through the feed port 5 on the reactor body 1 or through the gas distributor.
[0044] In some embodiments, the single-axis reaction device 100 further includes a discharge baffle 3, which is disposed at the bottom of the inner wall of the reactor body 1 and located between the blade 4 and the discharge port 6. A discharge gap 9 is formed between the discharge baffle 3 and the stirring shaft 2. A material flow channel 10 is formed between the discharge baffle 3, the first pusher blade 7 and the inner wall of the reactor body 1. The material flow channel 10 extends axially and communicates with the discharge gap 9. The first pusher blade 7 is used to guide magnesium particles that enter the reactor body 1 from the feed port 5 into the material flow channel 10. The blade 4 is used to drive the magnesium particles to move circumferentially within the reactor body 1 so that the magnesium particles react with the hydrogen gas introduced into the reactor body 1 to generate magnesium hydride particles.
[0045] Specifically, the bottom of the inner wall of the reactor body 1, the side wall of the discharge baffle 3 facing the inlet 5, and the side wall of the first pusher blade 7 facing the outlet 6 together form the material flow channel 10. Furthermore, the highest point of the material flow channel 10 is lower than the upper surface of the discharge baffle 3, the lowest point of the discharge chamber is higher than the upper surface of the discharge baffle 3, and the highest point of the discharge port 6 is lower than the lowest point of the material flow channel 10.
[0046] Furthermore, the discharge baffle 3 is located axially between the material flow channel 10 and the discharge port 6, and the discharge gap 9 corresponds longitudinally to the discharge baffle 3.
[0047] Furthermore, the first pusher blade 7, the feed inlet 5, the material flow channel 10, the discharge gap 9, and the discharge outlet 6 are arranged sequentially along the axial direction, and are all located between the first pusher blade 7 and the second pusher blade 8 along the axial direction; the first pusher blade 7 and the second pusher blade 8 are used to drive the reactant material to move towards the discharge outlet 6.
[0048] The first pusher blade 7 guides magnesium particles into the material flow channel 10. Due to the obstruction of the discharge baffle 3, the magnesium particles entering the material flow channel 10 and the magnesium hydride particles produced by the reaction will not flow directly out of the discharge port 6, but will continue to accumulate in the material flow channel 10. At this time, the volume of material in the material flow channel 10 is the storage volume. Only when the volume of material in the material flow channel 10 exceeds the maximum capacity of the material flow channel 10 will material flow out through the discharge gap 9 and from the discharge port 6. The volume of material flowing out from the discharge port 6 is the discharge volume. In other words, when the storage volume is equal to the maximum capacity, the discharge volume is zero. At this time, if magnesium particles are added from the feed port 5, the storage volume will be greater than the maximum capacity. The volume of material added from the feed port 5 is the feed volume. It can be seen that when the storage volume is equal to the maximum capacity, the feed volume is equal to the discharge volume. Therefore, by controlling the feed volume, the discharge volume can be controlled to achieve quantitative control in the magnesium hydride material production process, thereby achieving decoupled control of the movement mode of magnesium particles in the reactor body 1.
[0049] Furthermore, the decoupled control of the movement of magnesium particles within the reactor body 1, i.e., the circumferential and axial movements, can be separately regulated. Specifically, on the one hand, the blades 4 drive the magnesium particles to move circumferentially, thereby increasing the contact frequency between the magnesium particles and hydrogen and improving the binding efficiency of the reaction process; on the other hand, the material flow channel 10 formed by the first pusher blade 7, the inner wall of the reactor body 1, and the discharge baffle 3 enables quantitative and orderly axial material transport, thus allowing independent control of the residence time of reactants in the reaction chamber. It is evident that by separately regulating the circumferential and axial movements of the material within the reactor body 1, the reaction rate and product purity can be independently optimized, avoiding the problem of incompatibility between efficiency and purity caused by the coupling of stirring and conveying in traditional spiral pusher structures. This achieves a dual improvement in reaction efficiency and reaction quality, significantly enhancing the controllability and stability of the production process.
[0050] It should be noted that the maximum capacity of the material flow channel 10 is determined by the height of the discharge baffle 3. Therefore, the reaction time can be adjusted by controlling the feed rate and by adjusting the height of the discharge baffle 3. As for the height adjustment method of the discharge baffle 3, telescopic adjustment or replacement of discharge baffles 3 with different heights can be selected, which will not be elaborated here.
[0051] Furthermore, due to the presence of the discharge baffle 3, magnesium hydride particles that cannot be discharged accumulate between the discharge baffle 3, the first pusher blade 7, and the bottom of the reactor inner wall. In this application, after the reaction is completed, the reverse stirring shaft 2 drives the reverse turning part to rotate, thereby pushing the magnesium hydride particles toward the discharge baffle 3 and smoothly entering the discharge port 6 and being discharged from the reactor body 1.
[0052] A specific embodiment of this application also provides a method for producing magnesium hydride, implemented using the uniaxial reactor 100 described above. Since the magnesium hydride production method employs all embodiments of the uniaxial reactor 100 described above, it possesses all the beneficial effects of the uniaxial reactor 100.
[0053] Specifically, magnesium hydride production methods include: Step S1: Drive the stirring shaft 2 to rotate forward to carry out the magnesium hydride reaction; Step S2: Drive the stirring shaft 2 to reverse so as to discharge the material after the reaction.
[0054] Step S1 includes: Step S11: Decouple the helical motion of magnesium particles during the reaction within reactor body 1 into circumferential and axial motion; Step S12: Drive the stirring shaft 2 to rotate forward, and control the rotation speed of the blades 4 driven by the stirring shaft 2 to adjust the speed of the magnesium particles in circumferential motion and adapt to the preset production purity of the magnesium hydride particles. Step S13: By controlling the number of magnesium particles fed into the feed inlet every 5 units of time, the speed of the magnesium particles moving in the axial direction is adjusted and adapted to the preset production speed of magnesium hydride particles.
[0055] It should be noted that during step S2, there is a possibility that the material may be excessively pushed to the rear end of the reactor shell, thereby affecting the effective discharge of magnesium hydride particles and causing drawbacks during reversal. Therefore, when driving the stirring shaft 2 to reverse for post-reaction discharge, the reversal stroke of the stirring shaft 2 is limited to avoid the above-mentioned problems, thereby improving the reliability of the magnesium hydride production method.
[0056] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0059] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A uniaxial reaction apparatus, characterized in that, include: The reactor body (1) has an inlet (5) and an outlet (6) arranged axially on its outer peripheral wall. The reactor body (1) has a material flow channel (10) for containing the reactants and an outlet gap (9) higher than the material flow channel (10) inside the reactor body (1). The outlet gap (9) is used to connect the material flow channel (10) and the outlet (6). A stirring shaft (2) is coaxially installed inside the reactor body (1); Multiple blades (4) are installed on the stirring shaft (2), and each blade (4) has a forward-rotating turning surface (41) and a reverse-rotating turning surface (42) that are opposite to each other. When the stirring shaft (2) rotates forward, the stirring shaft (2) drives all the blades (4) to contact the reactant material in the material flow channel (10) with the forward rotating material turning surface (41), thereby driving the reactant material to move around the stirring shaft (2) in a circumferential direction; when the stirring shaft (2) rotates in reverse, the stirring shaft (2) drives all the blades (4) to contact the reactant material in the material flow channel (10) with the reverse rotating material turning surface (42), thereby causing the reactant material to move to the discharge port (6) through the discharge gap (9).
2. The uniaxial reaction apparatus according to claim 1, characterized in that, The reactants include magnesium particles; The forward-rotating material-turning surface (41) extends radially along the stirring shaft (2), and the reverse-rotating material-turning surface (42) is inclined along the axial direction toward the discharge port (6). The forward-rotating material-turning surface (41) is used to drive magnesium particles to move circumferentially within the reactor body (1) to generate magnesium hydride particles with the hydrogen gas introduced into the reactor body (1).
3. The uniaxial reaction apparatus according to claim 1, characterized in that, A blade structure (43) is formed on the forward-rotating material-turning surface (41).
4. The uniaxial reaction apparatus according to claim 1, characterized in that, The included angle between the forward-rotating turning surface (41) and the reverse-rotating turning surface (42) is 4°~10°.
5. The uniaxial reaction apparatus according to claim 1, characterized in that, The blades (4) are arranged in multiple sets along the axial direction on the stirring shaft (2), and each set of blades (4) includes two blades (4) located in the same radial plane and arranged symmetrically.
6. The uniaxial reaction apparatus according to claim 1, characterized in that, The feed inlet (5) is relatively close to the front end of the reactor body (1), and the discharge port (6) is relatively close to the rear end of the reactor body (1). A first pusher blade (7) is also installed on the stirring shaft (2). The first pusher blade (7) is located between the feed inlet (5) and the front end. The first pusher blade (7) can apply a force to the material toward the rear end.
7. The uniaxial reaction apparatus according to claim 6, characterized in that, The stirring shaft (2) is also equipped with a second pusher blade (8), which is located between the discharge port (6) and the rear end. The second pusher blade (8) can apply a force to the material toward the front end.
8. The uniaxial reaction apparatus according to claim 1, characterized in that, The single-axis reaction device (100) also includes a drive element and a sealing structure. The drive element extends into the reactor body (1) and is connected to the stirring shaft (2). The sealing structure is used to seal the drive element and the reactor body (1). And / or, the reactor body (1) is fitted with a jacket; And / or, a hollow portion is formed inside the stirring shaft (2).
9. A method for producing magnesium hydride, characterized in that, The magnesium hydride production method is carried out using a uniaxial reactor (100) according to any one of claims 1 to 8, and includes the following steps: Drive the stirring shaft (2) to rotate forward to carry out the magnesium hydride reaction; Drive the stirring shaft (2) to reverse so as to discharge the material after the reaction.
10. The method for producing magnesium hydride according to claim 9, characterized in that, When the stirring shaft (2) is reversed to discharge the material after the reaction, the reverse stroke of the stirring shaft (2) is limited.