Pressure-resistant ammonia decomposer

Abstract

The utility model provides a kind of pressure-resistant ammonia decomposer, it is related to ammonia decomposition field.The decomposer includes: the reaction container with air inlet and exhaust port, its inside is provided with ammonia decomposition catalyst;Wherein, the number of reaction container is multiple, and it is sequentially spaced distribution to form annular structure around the same circumferential direction;Air inlet pipeline is arranged in the inside of annular structure, one end simultaneously communicates the air inlet of multiple reaction containers, the other end is used for external ammonia gas source;Exhaust pipe, for simultaneously communicating the exhaust port of multiple reaction containers;Electric heater is arranged in the clearance of annular structure;And heat preservation structure, including heat radiation reflection layer and heat preservation cover, heat radiation reflection layer is sleeved in the outside of annular structure, heat preservation cover is simultaneously sleeved in the outside of annular structure, air inlet pipeline, exhaust pipe, electric heater and heat radiation reflection layer.The energy dissipation of the decomposer of the application is greatly reduced when heating, the heating efficiency of electric heater is significantly improved, and energy cost can be effectively controlled.

Description

Technical Field

[0001] This utility model relates to the field of ammonia decomposition technology, and more specifically, to an ammonia-resistant decomposer. Background Technology

[0002] Green ammonia is a substance produced using renewable energy sources such as solar and wind power. Currently, it is increasingly regarded as a zero-carbon green liquid fuel and a high-density hydrogen storage carrier. The applications of green ammonia are extremely wide-ranging. In thermal power generation, it can participate in the power generation process as a new type of fuel, optimizing the energy structure of power generation; in high-temperature manufacturing, it can provide stable energy support for high-temperature reactions; in transportation, it makes it possible to provide power for new energy vehicles; in hydrogen metallurgy, it helps to achieve more environmentally friendly and efficient metallurgical processes; and in green chemistry, it participates in various chemical reactions as a basic raw material, promoting the green transformation of the chemical industry.

[0003] Given the significant geographical disparities in renewable energy resources, with some regions being resource-rich while others are relatively scarce, green ammonia, with its unique properties, has become an efficient storage and transportation medium for renewable energy. It can transport the renewable energy contained within it from resource-rich areas to resource-scarce regions, achieving optimized energy allocation and rational utilization.

[0004] When green ammonia is used as a fuel or hydrogen storage carrier, catalytic decomposition is essential. Partial catalytic decomposition can produce ammonia-hydrogen blended fuel, which plays a crucial role in scenarios with specific energy requirements; while complete catalytic decomposition of green ammonia yields hydrogen, meeting the needs of various hydrogen-using scenarios. Therefore, catalytic decomposition technology occupies a key position in the practical application of green ammonia and is the core technology determining its widespread and efficient application. As one of the important devices used in green ammonia decomposition, the performance of the ammonia decomposer directly affects the efficiency and effectiveness of green ammonia decomposition.

[0005] In existing technologies, ammonia decomposers mainly consist of a reaction vessel, a heating system, a catalyst bed, and an inlet / outlet gas system. However, this heating system has significant drawbacks during operation, as a large amount of energy is lost during the heating process. This not only results in excessive energy dissipation during ammonia decomposition, leading to low heating efficiency and increased energy costs, but also significantly reduces the practicality of the entire ammonia decomposer in real-world applications due to energy waste, making it difficult to meet the demands for large-scale, high-efficiency green ammonia decomposition. Utility Model Content

[0006] The purpose of this invention is to provide an ammonia decomposer, which aims to solve the technical problems mentioned in the background art.

[0007] The embodiments of this utility model are implemented as follows: This application provides a pressure-resistant ammonia decomposer, comprising: a reaction vessel having an inlet and an outlet, the interior of which is filled with an ammonia decomposition catalyst; wherein, there are multiple reaction vessels, which are arranged in a ring structure at intervals around the same circumference; an inlet pipe disposed inside the ring structure, one end of which is connected to the inlet of multiple reaction vessels, and the other end of which is used to connect to an external ammonia source; an outlet pipe for simultaneously connecting to the outlet of multiple reaction vessels; an electric heater disposed in the gap of the ring structure; and a heat insulation structure, including a heat radiation reflective layer and a heat insulation sleeve, wherein the heat radiation reflective layer is sleeved on the outside of the ring structure, and the heat insulation sleeve is sleeved on the outside of the ring structure, the inlet pipe, the outlet pipe, the electric heater, and the heat radiation reflective layer.

[0008] Furthermore, based on the aforementioned scheme, a reaction gas mixing chamber is also included, which is used to connect the aforementioned gas inlet pipe and the gas inlets of the multiple aforementioned reaction containers; In this embodiment, the air inlet of any of the above-mentioned reaction vessels is connected to the above-mentioned reaction gas mixing chamber through an air inlet connecting pipe.

[0009] Furthermore, based on the aforementioned scheme, it also includes an exhaust mixing chamber for connecting the exhaust pipe and the exhaust ports of the multiple reaction vessels. In this embodiment, the exhaust port of any of the above-mentioned reaction vessels is connected to the above-mentioned exhaust mixing chamber through an exhaust connecting pipe.

[0010] Furthermore, based on the aforementioned scheme, the electric heater is disposed in the gap between one of the adjacent reaction vessels.

[0011] Furthermore, based on the aforementioned scheme, the reaction vessel is equipped with a temperature sensor.

[0012] Furthermore, based on the aforementioned scheme, each of the above-mentioned reaction vessels is cylindrical, the axes of any two of the above-mentioned reaction vessels are parallel to each other, the above-mentioned air inlet pipe is located at the center of the above-mentioned annular structure and is arranged along the axial direction of the above-mentioned annular structure. The aforementioned reaction gas mixing chamber and the aforementioned outlet gas mixing chamber are respectively located at both ends of the aforementioned inlet pipe.

[0013] Furthermore, based on the aforementioned scheme, the material of the reaction vessel is selected as 316L, 15CrMoR, 12Cr2Mo1V or 310S.

[0014] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects: In the pressure-resistant ammonia decomposer designed in this application, the electric heater is placed in the gap of the annular structure. This arrangement allows the heat generated by the electric heater to act more directly and concentratedly on the reaction vessel, effectively shortening the heat transfer path and reducing heat loss during transmission. A heat radiation reflective layer, fitted outside the annular structure, uses the principle of heat radiation to reflect the heat emitted by the electric heater back to the reaction vessel, minimizing heat loss to the external environment. An insulation jacket completely encloses the annular structure, inlet pipe, exhaust pipe, electric heater, and heat radiation reflective layer, forming multiple layers of protection and further enhancing insulation performance. Through this design, energy dissipation is significantly reduced, the heating efficiency of the electric heater is significantly improved, and energy costs are effectively controlled. This comprehensively enhances the practicality of the entire ammonia decomposer in actual use, enabling it to better meet the requirements of high efficiency and energy saving for large-scale green ammonia decomposition. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view of an ammonia decomposer according to an embodiment of the present invention; Figure 2 This is a top view of an ammonia decomposer according to an embodiment of the present invention.

[0017] Icons: 1-Intake pipe, 2-Exhaust pipe, 3-Temperature sensor, 4-Insulation jacket, 5-Outlet connecting pipe, 6-Outlet mixing chamber, 7-Heat radiation reflective layer, 8-Electric heater, 9-Ammonia decomposition catalyst, 10-Reaction gas mixing chamber, 11-Outlet connecting pipe, 12-Reaction vessel. Detailed Implementation

[0018] The embodiments of this application will now be described in detail with reference to the accompanying drawings. Example

[0019] Please refer to Figure 1 and Figure 2This application provides a pressure-resistant ammonia decomposer, comprising: a reaction vessel 12 having an inlet and an outlet, wherein an ammonia decomposition catalyst 9 is disposed inside; wherein there are multiple reaction vessels 12, which are arranged in a ring structure at intervals around the same circumference; an inlet pipe 1 disposed inside the ring structure, one end of which is connected to the inlet of multiple reaction vessels 12, and the other end is used to connect to an external ammonia source; an outlet pipe 2, which is used to connect to the outlet of multiple reaction vessels 12; an electric heater 8 disposed in the gap of the ring structure; and a heat insulation structure, including a heat radiation reflective layer 7 and a heat insulation sleeve 4, wherein the heat radiation reflective layer 7 is sleeved on the outside of the ring structure, and the heat insulation sleeve 4 is sleeved on the outside of the ring structure, the inlet pipe 1, the outlet pipe 2, the electric heater 8, and the heat radiation reflective layer 7. The aforementioned heat radiation reflective layer 7 can typically be made of metal foil with high reflectivity (such as aluminum foil, nickel foil, etc.) or a thin film coated with a high reflectivity coating to efficiently reflect heat and reduce heat radiation loss; the insulation sleeve 4 often uses high-temperature resistant insulation materials (such as aluminum silicate cotton, rock wool, ceramic fiber, etc.) to enhance the insulation effect by blocking heat conduction and convection.

[0020] In the pressure-resistant ammonia decomposer designed in this application, the electric heater 8 is placed in the gap of the annular structure. This arrangement allows the heat generated by the electric heater 8 to act more directly and concentratedly on the reaction vessel 12, effectively shortening the heat transfer path and reducing heat loss during transmission. The heat radiation reflective layer 7, fitted outside the annular structure, uses the principle of heat radiation to reflect the heat emitted by the electric heater 8 back to the reaction vessel 12, minimizing heat loss to the external environment. The insulation sleeve 4 completely encloses the annular structure, the inlet pipe 1, the exhaust pipe 2, the electric heater 8, and the heat radiation reflective layer 7, forming multiple layers of protection and further enhancing the insulation performance. Through this design, energy dissipation is significantly reduced, the heating efficiency of the electric heater 8 is significantly improved, and energy costs are effectively controlled, thereby comprehensively improving the practicality of the entire ammonia decomposer in actual use and enabling it to better meet the requirements of high efficiency and energy saving for large-scale green ammonia decomposition.

[0021] Optionally, the aforementioned air inlet pipe 1 is arranged along the central axis of the annular structure. This arrangement ensures that the air inlet pipe 1 is precisely located at the center of the annular structure, thereby maintaining a consistent distance from the air inlet pipe 1 to each reaction vessel 12. This design allows ammonia gas to be delivered to the reaction gas mixing chamber 10 via the air inlet pipe 1 and then more evenly distributed to each reaction vessel 12, effectively ensuring the consistency of the air inlet conditions for each reaction vessel 12 and laying the foundation for the stable conduct of the ammonia decomposition reaction.

[0022] Specifically, the selection of ammonia decomposition catalyst 9 needs to be adapted to the reaction temperature, the working environment of the reaction vessel 12, and the required ammonia decomposition efficiency. Considering the structural design of this pressure-resistant ammonia decomposer (such as the electric heater 8 allowing for precise temperature control and the annular layout ensuring heating uniformity), the selectable ammonia decomposition catalyst 9 and its characteristics are as follows: Iron-based catalysts are among the most commonly used ammonia decomposition catalysts in industry. They primarily consist of iron oxides (such as Fe₂O₃ and Fe₃O₄) (with the active component being reduced α-Fe), and often include co-catalysts such as K₂O, CaO, and Al₂O₃ to enhance activity and stability. These catalysts offer advantages such as excellent high-temperature resistance, allowing them to withstand relatively high reaction temperatures (generally 300-750℃), and high mechanical strength, enabling them to withstand pressure fluctuations within the reaction vessel 12, thus exhibiting good compatibility with the pressure-resistant design of the decomposer. Furthermore, iron-based catalysts are relatively inexpensive, making them suitable for large-scale industrial applications. With a stable heat source provided by the electric heater 8, they can efficiently promote the decomposition of ammonia into hydrogen and nitrogen.

[0023] Nickel-based catalysts (especially supported nickel-based catalysts) are also commonly used. These catalysts use metallic nickel (Ni) as the active center, supported on supports such as Al₂O₃, SiO₂, and MgO. The support improves the dispersion of nickel, enhances the thermal stability of the catalyst, and prevents nickel particles from sintering and deactivating at high temperatures. The activity temperature of these catalysts is typically between 550-850℃, requiring higher energy consumption from the electric heater 8, which aligns with the energy-saving design concept of this decomposer through multiple insulation structures. Furthermore, supported nickel-based catalysts have high catalytic efficiency, enabling the complete decomposition of ammonia in a shorter time. Combined with the annular layout and uniform heating characteristics of the reaction vessel 12, this further improves the overall reaction conversion rate and product purity.

[0024] In addition, ruthenium-based catalysts can also be used in ammonia decomposition reactions. Ruthenium-based catalysts exhibit excellent catalytic performance and high activity at low temperatures, making them an ideal choice for ammonia decomposition. However, ruthenium is expensive, hindering large-scale industrial application. Therefore, ruthenium is generally supported on supports such as CaO, SiO2, MgO, and SiC using an impregnation method. The support serves to improve the dispersion of ruthenium, enhance the thermal stability of the catalyst, and reduce the amount of precious metal ruthenium used. The activity temperature of these catalysts is typically between 200-450℃. Supported nickel-based catalysts have high catalytic efficiency, achieving complete ammonia decomposition in a shorter time. Combined with the annular layout and uniform heating characteristics of reaction vessel 12, the overall reaction conversion rate and product purity can be further improved.

[0025] Co also exhibits good catalytic activity in the decomposition of ammonia. Generally, SiC, the supported substrate, is synthesized using the sol-gel method and carbothermal reduction method. Then, a Co / SiC catalyst is prepared via hydrothermal treatment and heat treatment. SiC has a high specific surface area, which can uniformly disperse Co nanoparticles, increasing the exposure of active sites and improving the adsorption capacity of the catalyst surface. The activity temperature of this type of catalyst is typically between 450-650℃, achieving ammonia decomposition efficiency of over 80% in a short time. Combined with the annular layout and uniform heating characteristics of the reaction vessel 12, the overall reaction conversion rate and product purity can be further improved.

[0026] All four types of catalysts mentioned above can function stably in the working environment of this pressure-resistant ammonia decomposer. Their selection can be determined comprehensively based on the temperature requirements, energy consumption control targets, and cost budget of the actual application scenario. The electric heating control precision and uniform heating design of the decomposer can provide suitable reaction conditions for different catalysts, ensuring the efficient operation of the ammonia decomposition process.

[0027] In this pressure-resistant ammonia decomposer, the air inlet is located below the exhaust port. This design, combined with the distribution of the cylindrical reaction vessel 12 and the internal ammonia decomposition catalyst 9, allows ammonia gas to enter from below and flow upward, extending the contact time with the catalyst and improving the sufficiency of ammonia decomposition. At the same time, the natural upward characteristic of the gas reduces the flow resistance, and with the premixing effect of the reaction gas mixing chamber 10, the gas can be more evenly distributed in each reaction vessel 12, ensuring the consistency of reaction conditions.

[0028] In a preferred embodiment, a reaction gas mixing chamber 10 is also included, which is used to connect the gas inlet pipe 1 and the gas inlets of the plurality of reaction containers 12. In this embodiment, the air inlet of any of the above-mentioned reaction containers 12 is connected to the above-mentioned reaction gas mixing chamber 10 through an air inlet connecting pipe 11.

[0029] In the above embodiments, the reaction gas mixing chamber 10 can ensure that the ammonia gas from the gas inlet pipe 1 is fully and evenly mixed before entering each reaction container 12, so as to ensure that the ammonia gas concentration, pressure and other parameters entering each reaction container 12 are consistent, thereby making the ammonia decomposition reaction conditions in each reaction container 12 the same, improving the stability and consistency of the decomposition reaction, and improving product quality.

[0030] In a preferred embodiment, an exhaust mixing chamber 6 is also included, which connects the exhaust pipe 2 and the exhaust ports of the plurality of reaction vessels 12. In this embodiment, the exhaust port of any of the above-mentioned reaction vessels 12 is connected to the above-mentioned gas mixing chamber 6 through the gas outlet connecting pipe 5.

[0031] In the above embodiments, the gas mixing chamber 6 can fully mix the gases produced by the decomposition of each reaction vessel 12, making the composition of the discharged gas more uniform. This facilitates the centralized processing and utilization of the decomposition products, such as in power generation and hydrogen production. Stable gas composition is more conducive to ensuring stable operation of the equipment.

[0032] In a preferred embodiment, the electric heater 8 is disposed in the gap between one of the adjacent reaction vessels 12.

[0033] In the above embodiments, there are multiple electric heaters 8, which are distributed in the gaps between different adjacent reaction vessels 12. This arrangement allows each reaction vessel 12 to be heated nearby, shortens the heating path, and enables heat to be transferred to the reaction vessel 12 more quickly and efficiently. This avoids heat loss during long-distance transmission, greatly improves heating efficiency, and ensures that the ammonia decomposition reaction can be carried out under more suitable temperature conditions, thereby improving the efficiency and quality of the entire ammonia decomposition process.

[0034] The aforementioned electric heater 8 can be a tubular electric heater, with its outer shell made of high-temperature resistant metal material (such as 310S stainless steel) and its internal heating wire made of nickel-chromium alloy. It can be directly inserted into the gap between adjacent reaction vessels and efficiently transfer heat through thermal conduction. For example, the tubular heater model SRY2-220 / 3 has a single unit power of 3kW and its length is adapted to the gap size of the reaction vessels. Multiple units can be installed in each gap to precisely heat each reaction vessel. Alternatively, a finned electric heater can be selected, with heat dissipation fins added to the outside of the metal tube to increase the heat exchange area. For example, a model with customized fin spacing adapted to the outer wall of the reaction vessel can rapidly raise the temperature in the gap through thermal radiation and convection to meet the temperature requirements of the ammonia decomposition catalyst.

[0035] In a preferred embodiment, the reaction vessel 12 is equipped with a temperature sensor 3.

[0036] In the above embodiment, the temperature sensor 3 can monitor the temperature inside the reaction vessel 12 in real time, providing operators with accurate temperature data. Through this data, operators can promptly grasp the temperature status of the ammonia decomposition reaction inside the reaction vessel 12. If abnormal temperature fluctuations occur, measures can be quickly taken to adjust the temperature, such as adjusting the power of the electric heater 8, to ensure the reaction always proceeds within a suitable temperature range. This not only helps improve the stability and efficiency of the ammonia decomposition reaction but also prevents problems such as catalyst deactivation and reduced reaction rate due to excessively high or low temperatures, ensuring the smooth progress of the entire ammonia decomposition process and improving product quality and production efficiency.

[0037] Optionally, an opening is provided on the top of the reaction vessel 12, and the temperature sensor 3 is detachably installed in the opening. The temperature sensor 3 can be a model suitable for high-temperature environments and flexible in installation, such as a type K thermocouple (e.g., WRN-131, measuring range 0-1200℃, with high-temperature resistance and a probe-type design for easy detachment and installation) or a Pt100 resistance temperature detector (e.g., WZP-131, measuring range -200-600℃, with high accuracy and suitable for the pressure resistance conditions of the reaction vessel 12). These models can meet the requirements for real-time and stable monitoring of the temperature inside the reaction vessel 12.

[0038] In a preferred embodiment, each of the above-mentioned reaction vessels 12 is cylindrical, the axes of any two of the above-mentioned reaction vessels 12 are parallel to each other, and the above-mentioned air inlet pipe 1 is located at the center of the above-mentioned annular structure and is arranged along the axial direction of the above-mentioned annular structure. The aforementioned reaction gas mixing chamber 10 and the aforementioned outlet gas mixing chamber 6 are respectively located at both ends of the aforementioned inlet pipe 1.

[0039] In the above embodiments, the cylindrical reaction vessel 12 has a relatively simple manufacturing process and low cost, and its internal space facilitates gas flow and reaction. The inlet pipe 1 is located at the center of the annular structure, allowing ammonia gas to diffuse more evenly to each reaction vessel 12, ensuring consistent reaction initiation conditions within each vessel 12, and improving reaction consistency and stability. Furthermore, the reaction gas mixing chamber 10 and the outlet gas mixing chamber 6 are respectively located at both ends of the inlet pipe 1, making the entry path of ammonia gas and the exit path of decomposition products clear, facilitating gas flow and management, reducing pipe crossings and confusion, and improving the overall system's operating efficiency and maintainability.

[0040] As a preferred embodiment, the reaction vessel 12 is made of 316L, 15CrMoR, 12Cr2Mo1V or 310S.

[0041] In the above embodiments, 316L is a low-carbon austenitic stainless steel with excellent corrosion resistance, especially in chloride-containing environments, effectively resisting the corrosive substances that may be generated during ammonia decomposition and extending the service life of the reaction vessel 12. 15CrMoR is a pearlitic heat-resistant steel with good creep strength and oxidation resistance at high temperatures, capable of withstanding the high-temperature conditions required for ammonia decomposition, ensuring stable operation of the reaction vessel 12 under high-temperature conditions. 12Cr2Mo1V is also a heat-resistant steel with excellent high-temperature performance and good structural stability, maintaining structural strength under complex temperature changes and meeting the requirements of temperature fluctuations during ammonia decomposition. 310S is an austenitic chromium-nickel stainless steel with extremely high temperature resistance and oxidation resistance, adapting to the high-temperature environment of ammonia decomposition, preventing oxidation damage to the reaction vessel 12 at high temperatures, ensuring equipment reliability and safety, and reducing maintenance costs.

[0042] Furthermore, unless otherwise explicitly specified or limited, the terms "installation" and "connection" in this application embodiment should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "upper," "lower," "left," "right," "inner," "outer," and "side," etc., are merely for reference to the direction in the accompanying drawings or the usual placement of the product during use. They are only for clearly describing this application and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application. The terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance; "multiple" refers to at least two. In this application embodiment, the limitations on relative positional relationships such as parallel, perpendicular, and aligned are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallel, perpendicular, and aligned are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.

[0043] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A pressure-resistant ammonia decomposer, characterized in that, include: The reaction vessel (12) is equipped with an air inlet and an exhaust outlet, and its interior is filled with an ammonia decomposition catalyst (9). The reaction vessels (12) are multiple in number and are arranged in a ring structure at intervals around the same circumference. The air inlet pipe (1) located inside the annular structure has one end connected to the air inlets of multiple reaction vessels (12) and the other end connected to an external ammonia source. Exhaust pipe (2) is used to simultaneously connect the exhaust ports of multiple reaction vessels (12); An electric heater (8) is disposed in the gap of the annular structure; as well as The thermal insulation structure includes a heat radiation reflective layer (7) and a thermal insulation sleeve (4). The heat radiation reflective layer (7) is sleeved on the outside of the annular structure, and the thermal insulation sleeve (4) is sleeved on the outside of the annular structure, the air inlet pipe (1), the exhaust pipe (2), the electric heater (8), and the heat radiation reflective layer (7).

2. The pressure-resistant ammonia decomposer according to claim 1, characterized in that, It also includes a reaction gas mixing chamber (10) for connecting the gas inlet pipe (1) and the gas inlets of the plurality of reaction vessels (12); The air inlet of any of the reaction containers (12) is connected to the reaction gas mixing chamber (10) through an air inlet connecting pipe (11).

3. The pressure-resistant ammonia decomposer according to claim 2, characterized in that, It also includes an exhaust mixing chamber (6) for connecting the exhaust pipe (2) and the exhaust ports of the plurality of reaction vessels (12); The exhaust port of any of the reaction vessels (12) is connected to the gas mixing chamber (6) through the gas connecting pipe (5).

4. The pressure-resistant ammonia decomposer according to claim 1, characterized in that, The electric heater (8) is disposed in the gap between one of the adjacent reaction vessels (12).

5. A pressure-resistant ammonia decomposer according to claim 1, characterized in that, The reaction vessel (12) is equipped with a temperature sensor (3).

6. A pressure-resistant ammonia decomposer according to claim 3, characterized in that, Each of the reaction vessels (12) is cylindrical, and the axes of any two reaction vessels (12) are parallel to each other. The air inlet pipe (1) is located at the center of the annular structure and is arranged along the axial direction of the annular structure. The reaction gas mixing chamber (10) and the outlet gas mixing chamber (6) are respectively located at both ends of the inlet pipe (1).

7. A pressure-resistant ammonia decomposer according to claim 6, characterized in that, The reaction vessel (12) is made of 316L, 15CrMoR, 12Cr2Mo1V or 310S.

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