Combustor

Abstract

The present disclosure provides a combustor. The combustor (100) is provided with a shell (1), a combustion chamber (11) is formed in the shell (1), the combustor (100) is further provided with a main fuel input part (2), a combustion-supporting gas input part (3), a reducing gas input part (4) and a fuel gas input part (5) which are communicated with the combustion chamber (11), main fuel of the main fuel input part (2) comprises ammonia, and the combustion-supporting gas input part (3) comprises a reducing gas input part (4) and a fuel gas input part (5). The combustion chamber (11) is provided with an ammonia combustion area, a reduction reaction area and an ammonia capturing area which are sequentially arranged, in the ammonia combustion area, main fuel of the main fuel input part (2) and combustion-supporting gas of the combustion-supporting gas input part (3) are combusted, and in the reduction reaction area, the combustion-supporting gas of the combustion-supporting gas input part (3) and the combustion-supporting gas of the combustion-supporting gas input part (3) are combusted. Reducing gas of the reducing gas input part (4) and nitric oxide of the ammonia combustion area are subjected to reduction reaction, and in the ammonia capturing area, ammonia and combustion-supporting gas are combusted by means of the fuel gas input part (5).

Description

Technical Field

[0001] The present disclosure relates to the field of burners, and in particular to a burner and a control method. Background Art

[0002] This section is intended to provide background information relevant to understanding the various technologies described herein. As the title of this section implies, this is a discussion of related technologies that should not in any way be considered prior art. Therefore, it should be understood that any statements in this section should be read in this light, rather than as admissions of prior art.

[0003] In light of current carbon emission reduction policy requirements and the inconvenience of hydrogen transportation, ammonia, as a good hydrogen carrier, and its combustion will make a significant contribution to carbon emission reduction. In this regard, nitrogen oxide emissions are currently one of the key indicators for monitoring current burners in China's combustion emission control and regulation. Utility Model Content

[0004] The purpose of the present disclosure is to provide a burner that can reduce the generation of nitrogen oxides and the escape of ammonia while meeting the requirements of carbon emission reduction policies, thereby improving safety and environmental friendliness.

[0005] Furthermore, the present disclosure aims to solve or at least alleviate one or more problems existing in the prior art.

[0006] The present disclosure solves the above problems by providing a burner and a control method. Specifically, according to one aspect of the present disclosure, the following are provided:

[0007] A burner, wherein the burner has a shell, a combustion chamber is formed in the shell, the burner also has a main fuel input part, a combustion-supporting gas input part, a reducing gas input part and a fuel gas input part that are connected to the combustion chamber, the main fuel of the main fuel input part includes ammonia, and the combustion chamber has an ammonia combustion zone, a reduction reaction zone and an ammonia capture zone arranged in sequence, in which the main fuel of the main fuel input part and the combustion-supporting gas of the combustion-supporting gas input part are burned, in the reduction reaction zone, the reducing gas of the reducing gas input part and the nitrogen oxides of the ammonia combustion zone are reduced, and in the ammonia capture zone, ammonia and the combustion-supporting gas are burned with the aid of the fuel gas input part.

[0008] Optionally, according to an embodiment of the present disclosure, the burner includes a refractory material provided on an inner wall of the shell, and the main fuel input part passes through the refractory material into the combustion chamber.

[0009] Optionally, according to an embodiment of the present disclosure, the main fuel input part directly enters the combustion chamber from outside the shell, and the main fuel of the main fuel input part is ammonia, or a mixture of ammonia and combustible gas.

[0010] Optionally, according to one embodiment of the present disclosure, the reducing gas includes ammonia.

[0011] Optionally, according to one embodiment of the present disclosure, the burner includes a swirl structure formed by the shell, and the combustion-supporting gas of the combustion-supporting gas input part forms a swirl through the swirl structure and is guided to the ammonia combustion zone to undergo a combustion reaction with the main fuel.

[0012] Optionally, according to one embodiment of the present disclosure, the burner includes a permanent lamp, which is connected to the ammonia combustion zone to ignite or support the combustion reaction of the combustion-supporting gas and the main fuel.

[0013] Optionally, according to one embodiment of the present disclosure, the burner includes a compensation gas input portion, which is introduced into the ammonia combustion zone to support the combustion reaction of the combustion-supporting gas and the main fuel.

[0014] Optionally, according to an embodiment of the present disclosure, the fuel gas of the fuel gas input part includes hydrogen or natural gas.

[0015] Optionally, according to an embodiment of the present disclosure, the shell is a rotating body structure, and the reducing gas input part and the fuel gas input part are respectively arranged at uniform angles on the shell.

[0016] Optionally, according to an embodiment of the present disclosure, the shell forms a first end and a second end, the output end of the main fuel input part is located at the first end, the second end forms an opening, and the gas input part is arranged obliquely toward the opening.

[0017] Optionally, according to one embodiment of the present disclosure, the combustible gas includes natural gas or hydrogen.

[0018] Optionally, according to an embodiment of the present disclosure, the compensation gas of the compensation gas input part includes air, natural gas or hydrogen.

[0019] According to another aspect of the present disclosure, a control method for the burner is provided, wherein the control method comprises the following steps:

[0020] Lighting the pilot lamp and the gas input portion;

[0021] The main fuel input portion and the combustion-supporting gas input portion respectively introduce the main fuel and the combustion-supporting gas into the combustion chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other features of the present disclosure will become apparent with reference to the accompanying drawings, in which:

[0023] Figure 1 shows a cross-sectional front view of a burner according to the present disclosure;

[0024] Figure 2 Shown based on Figure 1 Left side view of the burner;

[0025] Figure 3 A schematic diagram showing a swirl structure of a burner according to the present disclosure is shown;

[0026] Figure 4 shows a cutaway front view of another burner according to the present disclosure; and

[0027] Figure 5 A flow chart of a control method according to the present disclosure is shown. DETAILED DESCRIPTION

[0028] It is easy to understand that according to the technical solution of the present disclosure, without changing the essential spirit of the present disclosure, a person skilled in the art can propose a variety of interchangeable structural methods and implementation methods. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present disclosure and should not be regarded as the entire disclosure or as a limitation or restriction of the technical solution of the present disclosure.

[0029] The terms "up," "down," "left," "right," "front," "back," "front," "back," "top," and "bottom" mentioned or potentially mentioned in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may vary depending on their location or usage. Therefore, these or other directional terms should not be interpreted as restrictive. In addition, the terms "first," "second," "third," and similar expressions are used only for descriptive and distinguishing purposes and should not be understood to indicate or imply the relative importance of the corresponding components.

[0030] refer to Figure 1 and Figure 2 ,in, Figure 1 shows a cross-sectional front view of a burner according to the present disclosure; and Figure 2 Shown based on Figure 1 Left side view of the burner.

[0031] The burner 100 has a shell 1, in which a combustion chamber 11 is formed. The burner 100 also has a main fuel input part 2, a combustion-supporting gas input part 3, a reducing gas input part 4 and a fuel gas input part 5 that are connected to the combustion chamber 11. The main fuel of the main fuel input part 2 includes ammonia. The combustion chamber 11 has an ammonia combustion zone, a reduction reaction zone and an ammonia capture zone arranged in sequence. In the ammonia combustion zone, the main fuel of the main fuel input part 2 is burned with the combustion-supporting gas of the combustion-supporting gas input part 3. In the reduction reaction zone, the reducing gas of the reducing gas input part 4 is reduced by a reaction with the nitrogen oxides in the ammonia combustion zone. In the ammonia capture zone, ammonia and the combustion-supporting gas are burned with the aid of the fuel gas input part 5.

[0032] It should be understood that burners convert substances into heat energy through a chemical reaction called combustion, which can be used to provide a heat source or as an ignition tool. For example, in the petrochemical industry, burners can be used to heat the medium in furnace tubes. Burners are also used in industries such as steel and energy, as well as in boilers, smelting furnaces, melting furnaces, and heat treatment.

[0033] This technical solution demonstrates that using ammonia as a primary fuel, a good hydrogen carrier, significantly contributes to the country's carbon emission reduction policy and overcomes the inconvenience of hydrogen transportation. Furthermore, compared to carbon-emitting burners, ammonia as a primary fuel offers greater renewability and high energy density. For example, ammonia can be synthesized through the electrolysis of water and nitrogen. This high energy density means that ammonia is easy to store and transport, providing sufficient energy for use as a power source.

[0034] In this technical solution, the burner is divided into an ammonia combustion zone, a reduction reaction zone, and an ammonia capture zone. Therefore, this burner can be understood as a three-stage or three-phase combustion design. Of course, there is no need to set physical or clear boundaries between these three zones in the combustion chamber. The ammonia combustion zone is the first stage of the burner, where the flame takes root. Figure 1 From a 3D perspective, the flame originates from the left end of the burner and spreads to the right and outward. Ammonia combustion releases a large amount of heat, providing a significant amount of energy. Ammonia reacts with oxygen in the combustion-supporting gas to produce water and fuel-type nitrogen oxides (NOx), such as NO and NO2. (Nitrogen oxides are produced, for example, by the reaction of nitrogen and oxygen at high temperatures, or by incomplete bonding of nitrogen atoms in ammonia molecules with oxygen.) The combustion-supporting gas can be combustion-supporting air or other oxygen-containing or oxygen-enriched gases.

[0035] Since nitrogen oxides are atmospheric pollutants and harmful to the environment, in this technical solution, a reduction reaction zone is used as the second stage of the burner to deal with nitrogen oxides. Specifically, the reducing gas in the reducing gas input part undergoes a reduction reaction with the reactants in the ammonia combustion zone (mainly nitrogen oxides), which can reduce NOx through the reduction reaction and improve safety and environmental friendliness. Exemplarily, the reducing gas includes ammonia or methane. In addition, gases that can be oxidized in the air, such as hydrogen, carbon monoxide, hydrogen sulfide or sulfur monoxide, are also reducing gases and can also be used to undergo a reduction reaction with nitrogen oxides.

[0036] In addition, the burner also has an ammonia capture zone as the third level to avoid capturing ammonia that has not been fully reacted before. The source of the ammonia is, for example, ammonia from the main fuel input or ammonia as a reducing gas. As a result, ammonia reacts with oxygen in the combustion-supporting gas in the ammonia capture zone to generate nitrogen and water, which may be accompanied by a small amount of nitrogen oxides. In this way, the escape of ammonia is reduced or eliminated, and potential ammonia pollution is eliminated. To this end, in order to support the combustion reaction of ammonia and the combustion-supporting gas, the burner is provided with a gas input in the ammonia capture zone, for example, by providing a heat source to support the combustion reaction and improve the efficiency and effect of the reaction. In addition, the specific structure of each input part mentioned in this article is not particularly restricted. For example, the input part can be constructed in the form of a nozzle or a spray gun, and the fuel input efficiency is high and controllable.

[0037] As mentioned above, the reducing gas includes ammonia. In this regard, ammonia can undergo a reduction reaction with nitrogen oxides to generate nitrogen and water, thereby effectively reducing the emission of nitrogen oxides and reducing pollution to the environment. It can also be seen that the main fuel of the main fuel input part and the reducing gas of the reducing gas input part both use ammonia, so this solution has a high utilization efficiency for ammonia, meets zero carbon emissions, and has low dependence on other raw materials. Therefore, in one embodiment, an ammonia source shared by the main fuel input part and the reducing gas input part can be provided, for example, ammonia can be supplied to the main fuel input part and the reducing gas input part as needed by means of a manifold, and the ammonia input to the main fuel input part and the reducing gas input part can also be controlled as needed by means of flow control methods such as solenoid valves.

[0038] For example, the fuel gas in the fuel gas input 5 may include hydrogen or natural gas. It should be understood that the hydrogen or natural gas itself does not participate in the combustion reaction between ammonia and the combustion-supporting gas. Instead, it serves as fuel for the fuel gas input to support combustion in the fuel gas input, thereby providing a heat source and ignition temperature for the combustion reaction. For example, hydrogen or natural gas can mix with oxygen in the air and undergo a combustion reaction, releasing a large amount of heat energy. This combustion process provides the necessary heat source and ignition temperature for the combustion reaction between ammonia and the combustion-supporting gas, creating favorable conditions for the ammonia combustion reaction.

[0039] To this end, it is feasible that the gas input section adopts a premixing structure. A premixing structure can be understood as premixing the gas burned by the gas input section itself. This structure can support the gas input section's own combustion without the need for other energy sources and is therefore unaffected by interference from the burner's combustion-supporting gas. Exemplarily, the premixing structure includes a mixer for premixing the gas (such as natural gas or hydrogen) with air. Specifically, a Venturi nozzle can be used to draw in the gas using the vacuum created by the intake air flow rate to achieve uniform mixing.

[0040] Combine Figure 3 , which shows a schematic diagram of a swirl structure of a burner according to the present disclosure.

[0041] The burner 100 includes a swirl structure 6 formed by the housing 1 . The combustion-supporting gas in the combustion-supporting gas input portion 3 forms a swirl through the swirl structure 6 and is guided to the ammonia combustion zone to undergo a combustion reaction with the main fuel.

[0042] The swirl structure can also be called a swirl sheet. The combustion-supporting gas flowing through it forms a swirl or a rotating airflow, which can be fully mixed with the main fuel in the ammonia combustion zone, thereby improving the combustion efficiency of ammonia. Specifically, the swirl structure can cause the airflow to produce a rotational motion by changing the flow path and direction of the airflow. This rotational motion helps to increase the turbulence of the airflow, thereby enhancing the mixing effect between the combustion-supporting gas and the main fuel. When the combustion-supporting gas is guided to the ammonia combustion zone in the form of a swirl, its contact area and contact time with the main fuel (including ammonia) will increase, which helps to burn more fully and evenly, thereby improving combustion efficiency. Thus, the swirl structure can overcome the problems of low combustion velocity and unstable combustion of ammonia combustion.

[0043] The specific implementation of the swirl structure is not specifically limited herein. For example, by providing the swirl structure with guide vanes, channels, or other shapes, a swirling effect can be generated as the airflow passes through it. It is also understood that to facilitate mixing of the swirl flow with the main fuel, the output end of the main fuel input portion can be located adjacent to the output end of the swirl structure.

[0044] The burner 100 further includes a pilot lamp 8 , which is connected to the ammonia combustion zone to ignite or support the combustion reaction between the combustion-supporting gas and the main fuel.

[0045] It should be understood that the ever-burning lamp can be understood as a component used to maintain continuous ignition through a continuously lit flame. It is an auxiliary fire source that can ensure the stable combustion of the main flame of the burner, that is, it can be used to ignite and support the combustion reaction of the combustion-supporting gas and the main fuel to ensure the safety of the ammonia combustion process. In addition, the ever-burning lamp also has a preheating function, which will be introduced later. For example, the combustion reaction of the ever-burning lamp itself can be achieved by mixing and igniting a combustible gas (such as coal gas, natural gas, etc.) with oxygen. The characteristics of the ever-burning lamp include low energy consumption, long life and easy maintenance. To this end, the output end of the ever-burning lamp can be set to the output end adjacent to the main fuel input part or the flame root, so as to enhance the ignition and maintenance effect of the combustion reaction of the main fuel.

[0046] The burner 100 of some embodiments of the present disclosure further includes a compensation gas input portion 9 , which is introduced into the ammonia combustion zone to support the combustion reaction of the combustion-supporting gas and the main fuel.

[0047] This technical solution is to compensate the combustion reaction in the ammonia combustion zone on demand. As mentioned above, the combustion reaction in the ammonia combustion zone involves the main fuel and the combustion-supporting gas. Since incomplete reaction of ammonia and the combustion-supporting gas may produce nitrogen oxides, the compensating gas can be air, which can further mix with the incompletely reacted ammonia and the combustion-supporting gas to promote the reaction between them, thereby making the combustion more complete. It can be seen that by introducing compensating air, the degree of mixing of ammonia and the combustion-supporting gas can be improved, the contact area and reaction time between them can be increased, and the temperature and pressure of the ammonia combustion zone can be adjusted to optimize the combustion conditions, thereby effectively reducing the generation of nitrogen oxides, improving combustion efficiency, and reducing pollution to the environment. In this regard, in the design of the ammonia combustion zone and the operation of the burner, it is possible to consider reasonably controlling the introduction of compensating air, such as its introduction time, introduction amount, introduction speed and other parameters. To this end, the output end of the compensating gas input part can be set to the output end adjacent to the main fuel input part or the flame root. It can also be understood that the compensating gas input part in the figure is presented in the form of an opening, and the corresponding spray gun or nozzle can be extended into the opening to realize the supply of the corresponding gas, or the compensating gas input part itself is constructed as a spray gun or nozzle of the corresponding gas.

[0048] In some other embodiments, the compensating gas of the compensating gas input portion 9 may also include natural gas or hydrogen. This is to support the combustion reaction of the main fuel and the combustion-supporting gas. It should be understood that natural gas and hydrogen are both high-quality combustible gases, both of which have high calorific value and good combustion performance. When this type of gas is input as compensating gas, it can be fully mixed with the main fuel ammonia and the combustion-supporting gas to provide additional combustible material, thereby enhancing the intensity and stability of the combustion reaction, optimizing the combustion conditions, and improving combustion efficiency. In particular, these gases can release more heat energy during the combustion process, promote the complete combustion of the main fuel ammonia, and reduce harmful substances produced by incomplete combustion, such as nitrogen oxides.

[0049] Thus, the design of the makeup gas input portion 9 of the burner disclosed herein takes into account the possibility of inputting a variety of combustible gases to adapt to different combustion requirements and operating conditions. This design makes the burner more flexible and efficient during operation, and can better meet the needs of practical applications.

[0050] exist Figure 1 It can also be seen that the burner 100 includes a refractory material 7 arranged on the inner wall of the shell 1 , and the main fuel input part 2 flows into the combustion chamber 11 through the refractory material 7 .

[0051] It should be understood that refractory materials can be used to: withstand high temperatures, ensuring stable burner operation at high temperatures; provide thermal insulation, effectively reducing heat transfer, improving burner efficiency, and reducing energy waste; resist chemical erosion and corrosion in high-temperature and corrosive environments, protecting the burner from damage; and their hardness and stability support and protect the burner structure, preventing deformation and damage due to thermal expansion and contraction. Refractory materials can be refractory bricks.

[0052] This technical solution utilizes the heat generated by the refractory during burner operation, transferring this heat to the main fuel input, thereby heating the main fuel and creating a preheating effect. This preheating effect helps ignite ammonia during the combustion reaction. Given ammonia's slow combustion rate, raising the temperature of the main fuel effectively enhances its stable combustion. Furthermore, this technical solution fully utilizes the heat of the refractory itself, improving resource utilization without increasing the burden on the burner.

[0053] In this case, pure ammonia can be used as the primary fuel due to its superior combustion performance. The benefits of pure ammonia as the primary fuel lie in its environmentally friendly nature and efficient combustion. Using pure ammonia as the primary fuel significantly reduces pollutant emissions during combustion, contributing to environmental protection.

[0054] In addition, this preheating method can also be used in conjunction with a pilot light or a gas input. For example, during the startup phase, the pilot light and / or the gas input can be pre-ignited to preheat not only the combustion chamber but also the refractory material and, consequently, the main fuel, thereby enhancing the aforementioned technical effects.

[0055] Therefore, in order to achieve a better preheating effect, the section of the main fuel input part in the refractory material can be designed to be longer, for example, by increasing the contact time or area by adding a curved section. At the same time, the flow resistance that may be caused by this should also be considered to achieve a balance between fuel input efficiency and preheating effect.

[0056] refer to Figure 4 , which shows a cross-sectional front view of another burner according to the present disclosure.

[0057] Figure 4 The burner shown is Figure 1 The main difference between the burners shown is Figure 4 The design of the main fuel input of the burner, or the way the main fuel input is introduced into the combustion chamber.

[0058] Specifically, the main fuel input part 2 directly flows into the combustion chamber 11 from outside the housing 1 , and the main fuel of the main fuel input part 2 is ammonia or a mixture of ammonia and combustible gas.

[0059] The "direct" introduction here can be understood as the main fuel input part extending directly into the combustion chamber from the outside of the shell without preheating, for example, without passing through refractory materials. Therefore, in this design scheme, the structure of the main fuel input part can be constructed relatively simply, for example, it can be designed as a straight tube shape, and the resistance to fuel input is low. To this end, in order to ensure that the ammonia in this case is burned as fully as possible, it is also defined in the present technical solution that the main fuel of the main fuel input part can be ammonia, and here, it can be additionally considered to promote the ignition of ammonia by increasing the combustion-supporting gas. In some other embodiments, the main fuel of the main fuel input part is a mixture of ammonia and combustible gas, which can also promote the ignition of ammonia in this way. Combustible gases generally include oxygen, hydrogen, methane, and ethane.

[0060] For example, the combustible gas is natural gas or hydrogen. As previously mentioned, both natural gas and hydrogen are high-quality combustible gases with high calorific value, which can increase the overall calorific value of the mixed fuel, thereby improving combustion efficiency. Natural gas or hydrogen combustion produces fewer pollutants, and mixing with ammonia helps reduce overall pollution emissions, making the combustion process more environmentally friendly. Furthermore, natural gas or hydrogen has stable combustion properties, and mixing with ammonia can enhance combustion stability and make the combustion process more controllable.

[0061] Combine Figure 2 In some embodiments of the present disclosure, the shell 1 is a rotating structure, such as a cylindrical or barrel structure, and the reducing gas input part 4 and the fuel gas input part 5 are arranged at uniform angles, for example, wrapped around the shell 1.

[0062] This technical solution can achieve uniform mixing and efficient combustion, release more heat energy, and improve combustion efficiency. This design also helps to form a stable flame, reduce fluctuations and flameouts during the combustion process, and improve the operating stability of the burner. The present disclosure does not impose any special restrictions on the specific number and angular spacing of the reducing gas input part and the fuel gas input part. Those skilled in the art can flexibly choose according to the requirements of the burner performance, cost, etc. As an example only, a burner is provided with 3 fuel gas input parts, which are evenly distributed at 90 degrees to each other, and 4 reducing gas input parts are provided, which are evenly distributed at 90 degrees to each other, and the fuel gas input parts and the reducing gas input parts are arranged alternately, and a combustion-supporting gas input part and a long-lasting lamp are provided at the top. In this way, while achieving the above-mentioned technical effects, space utilization can be optimized, making the burner structure more compact, so that the burner can achieve higher combustion efficiency in a limited space.

[0063] As for the arrangement of the gas input part, it is also exemplary that the shell 1 forms a first end and a second end, the output end of the main fuel input part 2 is located at the first end, the second end forms an opening 12, and the gas input part 5 is arranged obliquely toward the opening 12.

[0064] It can be seen that the first end (e.g., the left end) of the burner is the end where the flame takes root, and the second end (e.g., the right end) of the burner is the end where the flame spreads and outputs heat outward. To this end, the gas input is tilted outward and has an extension component along the rightward flame diffusion direction, thereby better achieving the effect of "catching" ammonia and preventing it from escaping, wherein the ammonia can come from the ammonia of the main fuel and / or the ammonia of the reducing gas input. In other embodiments, for example, considering layout space and other reasons, Figure 1 From a different perspective, the gas input portion can also be arranged vertically or tilted to the left.

[0065] In some embodiments of the present disclosure, the burner further includes a flame detection device 10, which is introduced into the combustion chamber. It will be appreciated that the purpose of providing the flame detection device is to observe the flame. To this end, the flame detection device can be further positioned adjacent to the output end of the main fuel input or the flame rooting point, or even away from the flame spread (i.e., to the left of the flame rooting point) to better observe the flame.

[0066] Exemplarily, a fire detection device includes a probe module, a processing module, and a cooling module. The probe module, for example, includes a photosensor that captures the radiant energy and image of the flame and converts it into an electrical signal. The processing module processes the output signals from the probe module and displays the flame analysis results. The cooling module is designed to account for the typically high temperature of the combustion chamber and provides cooling (e.g., air cooling) to the probe module to ensure long-term stable operation.

[0067] The flame detection device allows intuitive observation of key parameters such as flame shape, color, brightness, and combustion stability, thereby determining whether the combustion process is normal. This is crucial for ensuring safe burner operation and promptly identifying and addressing potential combustion issues. Furthermore, the flame detection device can be integrated with the control system to automatically adjust and optimize the combustion process, further improving combustion efficiency and safety.

[0068] refer to Figure 5 , which shows a flow chart of a control method according to the present disclosure.

[0069] Another aspect of the present disclosure relates to a control method for the above-mentioned burner 100, wherein the control method includes the following steps: S1: igniting the eternal lamp 8 and the gas input part 5; S2: the main fuel input part 2 and the combustion-supporting gas input part 3 respectively introduce the main fuel and the combustion-supporting gas into the combustion chamber 11.

[0070] It can be seen that the control method ignites the eternal lamp and the gas input part, which can play a preheating effect, preheating the combustion chamber and refractory materials, and can also preheat such as Figure 1 The main fuel in the burner's main fuel input facilitates the subsequent ammonia ignition and is also used to ignite the subsequent combustion reaction between the main fuel and the combustion-supporting gas, improving the stability of ammonia combustion and effectively eliminating ammonia slip that may occur during ignition. The combustion reaction between the main fuel and the combustion-supporting gas then proceeds to enter operational mode. This combustion reaction, due to the preheating effect, proceeds more efficiently and fully, allowing ammonia and oxygen to react as completely as possible, reducing the formation of nitrogen oxides.

[0071] It should be understood that all the above preferred embodiments are illustrative rather than restrictive, and that various modifications or variations made by those skilled in the art to the above-described specific embodiments under the concept of the present disclosure should be within the legal protection scope of the present disclosure.

Claims

1. A burner (100), characterized in that: The burner (100) has a shell (1), a combustion chamber (11) is formed in the shell (1), and the burner (100) also has a main fuel input part (2), a combustion-supporting gas input part (3), a reducing gas input part (4) and a fuel gas input part (5) that are connected to the combustion chamber (11), the main fuel of the main fuel input part (2) includes ammonia, and the combustion chamber (11) has an ammonia combustion zone, a reduction reaction zone and an ammonia capture zone arranged in sequence. In the ammonia combustion zone, the main fuel of the main fuel input part (2) and the combustion-supporting gas of the combustion-supporting gas input part (3) are burned, in the reduction reaction zone, the reducing gas of the reducing gas input part (4) and the nitrogen oxides in the ammonia combustion zone are reduced, and in the ammonia capture zone, ammonia and the combustion-supporting gas are burned with the help of the fuel gas input part (5).

2. The burner (100) according to claim 1, characterized in that The burner (100) comprises a refractory material (7) arranged on the inner wall of the shell (1), and the main fuel input part (2) passes through the refractory material (7) and enters the combustion chamber (11).

3. The burner (100) according to claim 1, characterized in that The main fuel input part (2) directly leads into the combustion chamber (11) from outside the shell (1), and the main fuel of the main fuel input part (2) is ammonia or a mixture of ammonia and combustible gas.

4. The burner (100) according to any one of claims 1 to 3, characterized in that The reducing gas includes ammonia.

5. The burner (100) according to any one of claims 1 to 3, characterized in that The burner (100) includes a swirl structure (6) formed by the shell (1), and the combustion-supporting gas of the combustion-supporting gas input part (3) forms a swirl through the swirl structure (6) and is guided to the ammonia combustion zone to perform a combustion reaction with the main fuel.

6. The burner (100) according to any one of claims 1 to 3, characterized in that The burner (100) includes a permanent lamp (8), which is connected to the ammonia combustion zone and is used to ignite or support the combustion reaction between the combustion-supporting gas and the main fuel.

7. The burner (100) according to any one of claims 1 to 3, characterized in that The burner (100) comprises a compensation gas input portion (9), which is introduced into the ammonia combustion zone and is used to support the combustion reaction of the combustion-supporting gas and the main fuel.

8. The burner (100) according to any one of claims 1 to 3, characterized in that The fuel gas of the fuel gas input part (5) includes hydrogen or natural gas.

9. The burner (100) according to any one of claims 1 to 3, characterized in that The shell (1) is a rotating body structure, and the reducing gas input part (4) and the fuel gas input part (5) are respectively arranged on the shell (1) at uniform angles.

10. The burner (100) according to any one of claims 1 to 3, characterized in that The housing (1) forms a first end and a second end, the output end of the main fuel input part (2) is located at the first end, the second end forms an opening (12), and the gas input part (5) is arranged obliquely toward the opening (12).

11. The burner (100) according to claim 3, characterized in that The combustible gas includes natural gas or hydrogen.

12. The burner (100) according to claim 7, characterized in that The compensation gas of the compensation gas input part (9) includes air, natural gas or hydrogen.

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