Ammonia cracking reactor apparatus

Abstract

The ammonia cracking reactor device comprises a cylinder body and a reactor, the cylinder body has a containing cavity, a first inlet and a first outlet which are communicated with the containing cavity; the reactor is located in the containing cavity, and the reactor comprises a first electrode plate, a second electrode plate and a heating piece, the first electrode plate, the heating piece and the second electrode plate are sequentially connected in a first direction, the first electrode plate is connected with a positive electrode of a power supply, the second electrode plate is connected with a negative electrode of the power supply, the resistance of the heating piece is greater than the resistance of the first electrode plate and the resistance of the second electrode plate, the heating piece defines a reaction cavity, the reaction cavity has a second inlet and a second outlet, the second outlet is communicated with the containing cavity, a catalyst is attached to the heating piece, and ammonia gas can be cracked in the reaction cavity through the first inlet and the second inlet in sequence. Therefore, the ammonia cracking reactor device has the advantages of low energy consumption, uniform temperature distribution and convenience for cracking ammonia gas.

Description

Technical Field

[0001] This invention relates to the field of thermal cracking technology, and more specifically to an ammonia cracking reactor device. Background Technology

[0002] Currently available ammonia-to-hydrogen technologies can be broadly categorized into thermal cracking and electrolysis. Electrolysis is currently less mature and produces relatively small amounts of ammonia; thermal cracking is more commonly used. Among related technologies, cracking ammonia-to-hydrogen utilizes catalytic combustion, increasing the demand for catalysts and placing greater emphasis on their activity and durability. The outer shell involves catalytic combustion, while the inner shell involves ammonia cracking, requiring stringent sealing conditions and consuming significant energy. The ammonia cracking reaction zone is a straight tube filled with catalyst; however, the catalyst has a small surface area, resulting in a large device volume for producing large quantities of hydrogen. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention provide an ammonia cracking reactor device.

[0005] An ammonia cracking reactor apparatus according to an embodiment of the present invention includes:

[0006] A cylindrical body having a receiving cavity and a first inlet and a first outlet communicating with the receiving cavity;

[0007] A reactor is located within a containment cavity. The reactor includes a first electrode plate, a second electrode plate, and a heating element. The first electrode plate, the heating element, and the second electrode plate are connected sequentially in a first direction. The first electrode plate is connected to the positive terminal of a power supply, and the second electrode plate is connected to the negative terminal of a power supply. The resistance of the heating element is greater than the resistance of both the first and second electrode plates. The heating element defines a reaction cavity, which has a second inlet and a second outlet. The second outlet communicates with the containment cavity. A catalyst is attached to the heating element. Ammonia gas can be sequentially introduced into the reaction cavity through the first inlet and the second inlet for cracking.

[0008] Therefore, the ammonia cracking reactor device according to the embodiments of the present invention has the advantages of low energy consumption, uniform temperature distribution, and easy cracking of ammonia.

[0009] In some embodiments, the heating element is a plate, and the thickness direction of the heating element, the thickness direction of the first electrode plate, and the thickness direction of the second electrode plate are all the first direction;

[0010] The reaction chamber is defined between the heating element and the first electrode plate;

[0011] The reaction chamber is defined between the heating element and the second electrode plate.

[0012] In some embodiments, the reactor further includes a plurality of bipolar plates, the thickness direction of which is the first direction. The plurality of bipolar plates are located between the first plate and the second plate in the first direction. There are a plurality of heating elements, and the plurality of heating elements and the plurality of bipolar plates are arranged alternately in the first direction. The heating element is disposed between the first plate and the bipolar plate, and between the second plate and the bipolar plate. Each heating element and the bipolar plate adjacent to it in the first direction define the reaction chamber.

[0013] In some embodiments, each reaction chamber has a plurality of reaction channels, a plurality of second inlets and a plurality of second outlets, wherein the plurality of reaction channels are connected to the plurality of second inlets in a one-to-one correspondence, and the plurality of reaction channels are connected to the plurality of second outlets in a one-to-one correspondence.

[0014] In some embodiments, the area of ​​the flow cross section of the reaction channel increases in the direction away from the second inlet along the extension direction of the reaction channel.

[0015] In some embodiments, the heating element is an annular plate, and the axial direction of the heating element is the first direction;

[0016] The reaction chamber is an annular cavity, with the second inlet located inside the reaction chamber and the second outlet located outside the reaction chamber.

[0017] The reactor has an air inlet chamber in the middle, and the air inlet chamber is located inside the reaction chamber;

[0018] The cylinder is provided with an air inlet pipe, which extends into the receiving cavity from the first inlet. The outlet of the air inlet pipe is connected to the air inlet cavity. The outlet of the air inlet pipe, the air inlet cavity, and each of the second inlets are connected in sequence.

[0019] The reaction chamber is provided with a plurality of partition plates spaced apart along the circumference, and the plurality of partition plates divide the reaction chamber into a plurality of reaction channels spaced apart along the circumference;

[0020] The circumferential dimension of the reaction channel increases in the direction away from the second inlet.

[0021] In some embodiments, each of the reaction channels is provided with a plurality of turbulence sections, each turbulence section including at least one turbulence element, the plurality of turbulence sections being arranged sequentially in the extension direction of the reaction channel, and the number of turbulence elements of the turbulence sections increasing in the extension direction of the reaction channel away from the second inlet.

[0022] In some embodiments, the heating element is a porous medium in which a catalyst is attached.

[0023] In some embodiments, each of the reaction channels is provided with a baffle adjacent to the second outlet, the baffles separating the reaction channels, and there is at least one baffle.

[0024] In some embodiments, the reactor includes a first end plate, a second end plate, a first insulating plate, and a second insulating plate, all with their thickness directions aligned in the first direction. The first end plate, the first insulating plate, the first electrode plate, the heating element, the second electrode plate, and the second end plate are sequentially connected by a connector. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of an ammonia cracking reactor device according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the cylinder according to an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of a reactor according to an embodiment of the present invention.

[0028] Figure 4 This is a front view of the reactor according to an embodiment of the present invention.

[0029] Figure 5 This is a partially enlarged view of the reactor according to an embodiment of the present invention.

[0030] Figure 6 This is a schematic diagram of a bipolar plate according to an embodiment of the present invention.

[0031] Figure 7 This is a partial schematic diagram of the second electrode plate according to an embodiment of the present invention.

[0032] Figure 8 This is a partial perspective view of the second electrode plate according to an embodiment of the present invention.

[0033] Figure label:

[0034] Cylinder 1, receiving cavity 11, first inlet 12, first outlet 13, air inlet pipe 14, air inlet chamber 15;

[0035] Reactor 2, first electrode plate 21, second electrode plate 22, heating element 23, reaction chamber 24, second inlet 241, second outlet 242, bipolar plate 25, reaction channel 26, partition plate 27, flow turbulence element 28, baffle 29.

[0036] First end plate 31, second end plate 32, first insulating plate 33, second insulating plate 34, connector 35. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] The ammonia cracking reactor apparatus of an embodiment of the present invention is described below with reference to the accompanying drawings. Figures 1 to 8 As shown, the ammonia cracking reactor apparatus according to an embodiment of the present invention includes a cylinder 1 and a reactor 2.

[0039] The cylinder 1 has a receiving cavity 11 and a first inlet 12 and a first outlet 13 communicating with the receiving cavity 11. For example, the sleeve 1 is an insulating sleeve, and the reactor 2 is located inside the receiving cavity 11, thereby increasing safety.

[0040] Reactor 2 includes a first electrode plate 21, a second electrode plate 22, and a heating element 23. The first electrode plate 21, heating element 23, and second electrode plate 22 are connected sequentially in a first direction. The first electrode plate 21 is connected to the positive terminal of the power supply, and the second electrode plate 22 is connected to the negative terminal. The resistance of the heating element 23 is greater than the resistance of the first electrode plate 21 and the resistance of the second electrode plate 22. Therefore, a voltage can be applied to the first electrode plate 21 and the second electrode plate 22, and the heating element 23 becomes conductive. As the current flows sequentially through the first electrode plate 21, the heating element 23, and the second electrode plate 22, electrical energy is converted into heat energy (Joule heating). Due to the higher resistance of the heating element 23, a greater amount of electrical energy is converted into heat energy (Joule heating) on ​​the heating element 23.

[0041] Heating element 23 defines a reaction chamber 24, which has a second inlet 241 and a second outlet 242. The second outlet 242 is connected to the receiving chamber 11. A catalyst is attached to the heating element 23. Ammonia gas can be introduced into the reaction chamber 24 for cracking through the first inlet 12 and the second inlet 241 in sequence. The gas after the reaction can enter the receiving chamber 11 through the second outlet 242 and then be discharged from the first outlet 13.

[0042] The heat generated by the current passing through the first electrode 21, heating element 23, and second electrode 22 can heat the temperature inside the reaction chamber 24. The heating element 23 is coated with a catalyst, meaning a catalyst can be present inside the reaction chamber 24. When ammonia enters the reaction chamber 24, it is heated to the reaction temperature and undergoes a cracking reaction on the catalyst surface under the action of the catalyst, producing hydrogen and nitrogen. Furthermore, the relatively uniform resistance distribution of the heating element 23, the first electrode 21, and the second electrode 22 improves the uniformity of the temperature field distribution throughout the reaction chamber 24, further facilitating the cracking of ammonia. The heating element 23 directly defines the reaction chamber 24, reducing the energy transfer process and directly cracking the ammonia, thus reducing energy consumption.

[0043] Therefore, the ammonia cracking reactor device according to the embodiments of the present invention has the advantages of low energy consumption, uniform temperature distribution, and easy cracking of ammonia.

[0044] In some embodiments, the heating element 23 is a (conductive) porous medium with a catalyst attached therein. This facilitates the attachment of the catalyst within the heating element 23, allowing ammonia gas from the reaction chamber 24 to enter the porous medium, further enhancing ammonia cracking. For example, the porous medium includes at least one of carbon paper and carbon felt, with the ammonia cracking catalyst attached to it.

[0045] like Figure 1 , Figure 4 and Figure 5 As shown, in some embodiments, the heating element 23 is a plate, and the thickness directions of the heating element 23, the first electrode plate 21, and the second electrode plate 22 are all in a first direction. This first direction can be a vertical direction, as indicated by the arrows in the figure. For example, the thickness directions of the heating element 23, the first electrode plate 21, and the second electrode plate 22 are all vertical, and the first electrode plate 21, the heating element 23, and the second electrode plate 22 are connected sequentially from top to bottom.

[0046] A reaction chamber 24 is defined between the heating element 23 and the first electrode plate 21. A reaction chamber 24 is also defined between the heating element 23 and the second electrode plate 22. That is, there can be multiple reaction chambers 24. For example, a reaction chamber 24 is defined between the upper surface of the heating element 23 and the lower surface of the first electrode plate 21. A reaction chamber 24 is defined between the lower surface of the heating element 23 and the upper surface of the second electrode plate 22.

[0047] like Figure 1 , Figure 4 and Figure 5 As shown, the reactor 2 also includes multiple bipolar plates 25, the thickness direction of which is the first direction, and the multiple bipolar plates 25 are located between the first electrode plate 21 and the second electrode plate 22 in the first direction.

[0048] There are multiple heating elements 23, and multiple heating elements 23 and multiple bipolar plates 25 are arranged alternately in the first direction. A heating element 23 is provided between the first electrode plate 21 and the bipolar plate 25 (the one closest to the first electrode plate 21 among the multiple bipolar plates 25 in the first direction), and a heating element 23 is provided between the second electrode plate 22 and the bipolar plate 25 (the one closest to the second electrode plate 22 among the multiple bipolar plates 25 in the first direction).

[0049] Each heating element 23 and its adjacent bipolar plate 25 in a first direction define a reaction chamber 24, with the first electrode 21 and the second electrode 22 defining a reaction chamber 24 with the corresponding heating element 23.

[0050] Specifically, the plates (bipolar plate 25, first plate 21, and second plate 22) are plates with low resistance, facilitating current flow. Multiple heating elements 23 and multiple bipolar plates 25 are provided, ensuring that each heating element 23 has a plate (one of the bipolar plate 25, first plate 21, and second plate 22) on both sides in the first direction, thus facilitating current flow through each heating element 23 and heat generation. Each heating element 23 and its connected (abutting) plate (one of the bipolar plate 25, first plate 21, and second plate 22) defines a reaction chamber 24. Multiple plates and multiple heating elements 23 define reaction chambers 24 spaced apart sequentially in the first direction, increasing the number of reaction chambers 24 and thus improving the ammonia cracking efficiency. This also increases the specific surface area of ​​the catalyst and reduces the volume of the reactor 2. Direct heating using the heater 23 (Joule heating) results in high overall heating efficiency and a uniform temperature field, enabling a small-volume, high-efficiency cracking reaction.

[0051] For example, there are multiple heating elements 23, and multiple heating elements 23 and multiple bipolar plates 25 are arranged alternately in the vertical direction. A heating element 23 is provided between the first electrode plate 21 and the uppermost bipolar plate 25, and a heating element 23 is provided between the second electrode plate 22 and the lowermost bipolar plate 25. Each heating element 23 and the bipolar plate 25 adjacent to it in the first direction define a reaction chamber 24, and multiple reaction chambers 24 are arranged at intervals in the vertical direction.

[0052] like Figures 6 to 8 As shown, each reaction chamber 24 has multiple reaction channels 26, multiple second inlets 241, and multiple second outlets 242. Each reaction channel 26 is connected to one of the multiple second inlets 241, and each reaction channel 26 is connected to one of the multiple second outlets 242. This allows ammonia gas to enter the multiple reaction channels 26 through the multiple second inlets 241, resulting in a more uniform distribution of ammonia gas within the reaction chamber 24 and further improving the cracking efficiency.

[0053] like Figures 6 to 8As shown, in some embodiments, the cross-sectional area of ​​the reaction channel 26 increases in the direction away from the second inlet 241 along the extension direction of the reaction channel 26. That is, the shape of the reaction channel 26 is diffuse in the direction away from the second inlet 241 along the extension direction of the reaction channel 26. The chemical reaction formula for ammonia cracking is 2NH3=3H2+N2, resulting in an increase in gas volume after cracking. This allows for a small initial space and high gas velocity when ammonia gas first enters the reaction channel 26 from the second inlet 241, followed by a large space and low gas velocity at the end of the reaction channel 26 (the end adjacent to the second outlet 242), which is suitable for the characteristic that the reaction proceeds in the direction of increasing entropy after ammonia cracking.

[0054] like Figures 1 to 5 As shown, in some embodiments, the heating element 23 is an annular plate, and the axial direction of the heating element 23 is a first direction. The reaction chamber 24 is an annular cavity, with the second inlet 241 located inside the reaction chamber 24 and the second outlet 242 located outside the reaction chamber 24. For example, the reaction chamber 24 is annular, and the axial direction of the heating element 23 (reaction chamber 24) is vertical.

[0055] The reactor 2 has an inlet chamber 15 in its middle, located inside the reaction chamber 24. An inlet pipe 14 is provided on the cylinder 1, extending from the first inlet 12 into the receiving cavity 11. The outlet of the inlet pipe 14 is connected to the inlet chamber 15, and the outlet of the inlet pipe 14, the inlet chamber 15, and each second inlet 241 are sequentially connected. Thus, the inlet pipe 14 can introduce ammonia gas into the second inlets 241 of multiple reaction chambers 24 through the inlet 15. For example, the cylinder 1 is a cylindrical cylinder, the receiving cavity 11 is a cylinder extending vertically, the inlet pipe 14 is located at the center of the cylinder 1, and the inlet chamber 15 is located at the center of the reaction chamber 24.

[0056] like Figure 6 As shown, in some embodiments, the reaction chamber 24 is provided with a plurality of circumferentially spaced partition plates 27, which divide the reaction chamber 24 into a plurality of circumferentially spaced reaction channels 26. The annular reaction chamber 24 is divided into a plurality of reaction channels 26 in the circumferential direction, and the second inlet 241 of each reaction channel 26 is located inside the reaction chamber 24, thereby facilitating the entry of ammonia gas into the reaction channel 26.

[0057] The circumferential dimension of the reaction channel 26 (reaction chamber 24) increases in the direction away from the second inlet 241, that is, the circumferential dimension of the reaction channel 26 increases outward so that the end space of the reaction channel 26 is large.

[0058] like Figures 6 to 8As shown, each reaction channel 26 is provided with a plurality of flow-disrupting sections, each of which includes at least one flow-disrupting element 28. The plurality of flow-disrupting sections are arranged sequentially in the extending direction of the reaction channel 26, and the number of flow-disrupting elements 28 in the flow-disrupting sections increases in the extending direction of the reaction channel 26 away from the second inlet 241.

[0059] Specifically, the flow-dispersing element 28 is disposed on one of the electrode plates (one of the bipolar plate 25, the first electrode plate 21, and the second electrode plate 22) and the heating element 23, and abuts against the other of the electrode plates and the heating element 23 to provide support. Furthermore, the flow-dispersing element 28 can turbulentize the ammonia gas, thereby facilitating the diffusion of ammonia gas within the heating element 23 (porous medium).

[0060] For example, the baffle 28 is a strip-shaped plate that extends radially along the reaction chamber 24 (generally). Each reaction channel 26 is provided with three internal baffles. The first baffle adjacent to the second inlet 241 includes one baffle 28, the third baffle adjacent to the second outlet 242 includes three baffles 28, and the second baffle located between the first baffle and the third baffle includes two baffles 28.

[0061] like Figure 7 and Figure 8 As shown, in some embodiments, each reaction channel 26 is provided with a baffle 29 adjacent to the second outlet 242, which isolates the reaction channel 26, and there is at least one baffle 29. Specifically, the baffle 29 abuts against the heating element 23 (porous medium). Because the reaction channel 26 is cut off, unreacted ammonia and cracked gas need to be forced to flow out of the reactor 2 through the porous medium (heating element 23), thereby ensuring the ammonia cracking reaction is complete. The baffle 29 is arranged in the outer ring (adjacent to the second outlet 242), where the airflow velocity is relatively low. Forcing the gas to pass through the heating element 23 here allows the gas velocity to be maintained at a low speed when passing through the heating element 23, and the reaction space velocity can be controlled within the space velocity range required by the catalyst, thereby making the ammonia cracking reaction more complete. The reaction space velocity refers to the amount of gas processed per unit time and per unit volume of catalyst under specified conditions. For example, the separator 27, the turbulence element 28, the baffle 29, and the electrode (one of the bipolar plate 25, the first electrode 21, and the second electrode 22) are integrally formed.

[0062] like Figure 6 As shown, in some embodiments, an annular baffle 29 is provided on the electrode plate (one of the bipolar plate 25, the first electrode plate 21, and the second electrode plate 22) located outside the reaction channel 26, and the annular baffle 29 abuts against the corresponding heating element 23 (porous medium).

[0063] like Figure 1 and Figure 4As shown, in some embodiments, the reactor 2 includes a first end plate 31, a second end plate 32, a first insulating plate 33, and a second insulating plate 34, all with their thickness directions aligned in a first direction. The first end plate 31, the first insulating plate 33, the first electrode plate 21, the heating element 23, the second electrode plate 22, and the second end plate 32 are sequentially connected by a connector 35. Specifically, the first end plate 31 and the second end plate 32 are annular. The reactor 2 has connecting holes that penetrate the first end plate 31, the second end plate 32, the first insulating plate 33, the second insulating plate 34, the heating element 23, and the electrode plates (bipolar plate 25, first electrode plate 21, and second electrode plate 22) along the first direction. The connector 35 passes through the connecting holes, integrating the first end plate 31, the second end plate 32, the first insulating plate 33, the second insulating plate 34, the heating element 23, and the electrode plates together. For example, there are four connecting holes, spaced apart circumferentially. The connector 35 is a set of four locking bolts, which are distributed in four connecting holes. The studs of the locking bolt sets are provided with insulating sleeves on their periphery.

[0064] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0065] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In this invention, unless otherwise explicitly 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 them; 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0067] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0068] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. 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.

[0069] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An ammonia cracking reactor device, characterized in that, include: A cylindrical body having a receiving cavity and a first inlet and a first outlet communicating with the receiving cavity; A reactor is located within a containment cavity. The reactor includes a first electrode plate, a second electrode plate, and a heating element. The first electrode plate, the heating element, and the second electrode plate are connected sequentially in a first direction. The first electrode plate is connected to the positive terminal of a power supply, and the second electrode plate is connected to the negative terminal of a power supply. The resistance of the heating element is greater than the resistance of both the first and second electrode plates. The heating element defines a reaction cavity, which has a second inlet and a second outlet. The second outlet communicates with the containment cavity. A catalyst is attached to the heating element. Ammonia gas can be sequentially introduced into the reaction cavity through the first inlet and the second inlet for cracking. The heating element is a plate, and the thickness direction of the heating element, the thickness direction of the first electrode plate, and the thickness direction of the second electrode plate are all the first direction. The reaction chamber is defined between the heating element and the first electrode plate; The reaction chamber is defined between the heating element and the second electrode plate; The reactor further includes multiple bipolar plates, the thickness direction of which is the first direction. The multiple bipolar plates are located between the first plate and the second plate in the first direction. There are multiple heating elements, and the multiple heating elements and the multiple bipolar plates are arranged alternately in the first direction. The heating element is located between the first plate and the bipolar plate, and between the second plate and the bipolar plate. Each heating element and the bipolar plate adjacent to it in the first direction define the reaction chamber. The heating element is a conductive porous medium, and a catalyst is attached to the porous medium.

2. The ammonia cracking reactor apparatus according to claim 1, characterized in that, Each of the reaction chambers has multiple reaction channels, multiple second inlets, and multiple second outlets. The multiple reaction channels are connected to the multiple second inlets in a one-to-one correspondence, and the multiple reaction channels are connected to the multiple second outlets in a one-to-one correspondence.

3. The ammonia cracking reactor apparatus according to claim 2, characterized in that, The area of ​​the flow cross section of the reaction channel increases in the direction away from the second inlet along the extension direction of the reaction channel.

4. The ammonia cracking reactor apparatus according to claim 3, characterized in that, The heating element is an annular plate, and the axial direction of the heating element is the first direction; The reaction chamber is an annular cavity, with the second inlet located inside the reaction chamber and the second outlet located outside the reaction chamber. The reactor has an air inlet chamber in the middle, and the air inlet chamber is located inside the reaction chamber; The cylinder is provided with an air inlet pipe, which extends into the receiving cavity from the first inlet. The outlet of the air inlet pipe is connected to the air inlet cavity. The outlet of the air inlet pipe, the air inlet cavity, and each of the second inlets are connected in sequence. The reaction chamber is provided with a plurality of partition plates spaced apart along the circumference, and the plurality of partition plates divide the reaction chamber into a plurality of reaction channels spaced apart along the circumference; The circumferential dimension of the reaction channel increases in the direction away from the second inlet.

5. The ammonia cracking reactor apparatus according to claim 3, characterized in that, Each of the reaction channels is provided with a plurality of flow-disrupting sections, each flow-disrupting section including at least one flow-disrupting element. The plurality of flow-disrupting sections are arranged sequentially in the extension direction of the reaction channel, and the number of flow-disrupting elements of the flow-disrupting sections increases in the extension direction of the reaction channel away from the second inlet.

6. The ammonia cracking reactor apparatus according to claim 3, characterized in that, Each of the reaction channels is provided with a baffle adjacent to the second outlet, the baffles separating the reaction channels, and there is at least one baffle.

7. The ammonia cracking reactor apparatus according to claim 1, characterized in that, The reactor includes a first end plate, a second end plate, a first insulating plate, and a second insulating plate, all with their thickness directions aligned with the first direction. The first end plate, the first insulating plate, the first electrode plate, the heating element, the second electrode plate, and the second end plate are sequentially connected by a connector.

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