Atomized flame synthesis burner with uniform and adjustable temperature field

Abstract

The application discloses a temperature field uniform and adjustable atomized flame synthesis burner, and relates to the technical field of nano-powder material preparation. The temperature field uniform and adjustable atomized flame synthesis burner comprises a disc body, the disc body is internally provided with an acetylene distribution cavity, an air and water vapor distribution cavity and a methane distribution cavity; a plurality of precursor atomizers are arranged on the disc body, the upper end of each precursor atomizer is provided with an atomizing nozzle, and the atomizing nozzle is higher than the upper surface of the disc body; a plurality of flame bodies are arranged in the disc body, the plurality of flame bodies are surrounded by the plurality of precursor atomizers, and the flame bodies are in communication with the acetylene distribution cavity, the air and water vapor distribution cavity and the methane distribution cavity; and a flow regulator is arranged at the center of the disc body, and the upper end of the flow regulator is provided with a flow regulating gas outlet which is in communication with the upper surface of the disc body. The temperature field uniform and adjustable atomized flame synthesis burner has the advantages of good flame temperature field uniformity, high nano-powder synthesis quality, good temperature controllability and strong adaptability.

Description

Technical Field

[0001] This invention relates to the field of nanopowder material preparation technology, and more specifically, to an atomized flame synthesis burner with a uniform and adjustable temperature field. Background Technology

[0002] Atomized flame synthesis burners are important equipment for the preparation of nanoparticle materials. By atomizing liquid precursors and injecting the atomized gas stream into a high-temperature flame region, the precursors undergo a series of processes such as pyrolysis, nucleation, aggregation, and growth in a high-temperature environment, ultimately forming nanoparticles.

[0003] The structure and properties of the high-temperature flame region have a decisive influence on the atomized flame synthesis process. To obtain high-quality nanopowders with stable performance and uniform particle size distribution, it is necessary not only to establish a highly uniform high-temperature field, but also to have the ability to flexibly control the flame temperature distribution in both spatial and temporal dimensions. Temperature uniformity directly affects the consistency of the thermal history of the precursor and is key to controlling the uniformity of particle size distribution, crystalline phase, and morphology; while temperature adjustability allows the process to adapt to the different requirements of various material systems for reaction temperature, heating rate, and residence time, achieving precise control of the entire process from nucleation to growth.

[0004] The atomized flame synthesis burner in the related technology has poor temperature uniformity in the flame area and limited temperature regulation capability. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an atomized flame synthesis burner with a uniform and adjustable temperature field. This atomized flame synthesis combustion has the advantages of good flame temperature field uniformity, high quality of nanoparticle synthesis, good temperature controllability, and strong adaptability.

[0006] To achieve the above objectives, an embodiment of the present invention provides a uniformly adjustable atomizing flame synthesis burner, comprising: a disc body having an acetylene distribution chamber, an air-water vapor distribution chamber, and a methane distribution chamber; a plurality of precursor atomizers disposed on the disc body and spaced circumferentially therebetween, each precursor atomizer having an atomizing nozzle at its upper end, the nozzle being higher than the upper surface of the disc body; a plurality of flame bodies disposed within the disc body and communicating with the upper surface of the disc body, each precursor atomizer being surrounded by the plurality of flame bodies, the flame bodies communicating with the acetylene distribution chamber, the air-water vapor distribution chamber, and the methane distribution chamber; and a rectifier located at the center of the disc body, the rectifier having a rectified gas outlet at its upper end, the rectified gas outlet communicating with the upper surface of the disc body.

[0007] The atomized flame synthesis burner with uniform and adjustable temperature field according to embodiments of the present invention has advantages such as good uniformity of flame temperature field, high quality of nanopowder synthesis, good temperature controllability, and strong adaptability.

[0008] In addition, the atomized flame synthesis burner with a uniformly adjustable temperature field according to the above embodiments of the present invention may also have the following additional technical features:

[0009] According to one embodiment of the present invention, the flame body includes: a flow-stabilizing cone, which is connected to the upper surface of the disk and has an inner diameter that gradually decreases from top to bottom; the inner circumferential surface of the flow-stabilizing cone is provided with a plurality of tapered jet holes spaced apart along the circumference of the flow-stabilizing cone; the axial direction of the tapered jet holes is perpendicular to the inner circumferential surface of the flow-stabilizing cone; and the tapered jet holes communicate with the acetylene distribution chamber; a flow guide tube, the upper end of which is connected to the lower end of the flow-stabilizing cone and is coaxially arranged with the flow-stabilizing cone; the lower end of which extends into the air-water vapor distribution chamber and is connected to the acetylene distribution chamber. The air-water vapor distribution chamber is connected, and the lower end of the guide tube is lower than the upper surface of the air-water vapor distribution chamber; the central injection pipe has a closed cone shape at its upper end and is connected to the methane distribution chamber at its lower end. The lower end of the central injection pipe is flush with the upper surface of the methane distribution chamber. The central injection pipe is located radially inside the guide tube and is coaxially arranged with the guide tube. The circumferential surface of the central injection pipe is provided with a plurality of radial jet holes spaced apart along the circumference and axial direction of the central injection pipe. All radial jet holes are higher than the lower end of the guide tube.

[0010] According to one embodiment of the present invention, the rectifying fluid includes: an outlet portion, wherein the rectifying gas outlet is disposed on the outlet portion; a rectifying gas cavity, wherein the upper end of the rectifying gas cavity is connected to the outlet portion; a transition cone, wherein the upper end of the transition cone is connected to the rectifying gas cavity, and the inner diameter of the transition cone gradually decreases from top to bottom; and a rectifying gas inlet pipe, wherein the upper end of the rectifying gas inlet pipe is connected to the lower end of the transition cone.

[0011] According to one embodiment of the present invention, the disk body has a square cross-section in the horizontal plane.

[0012] According to one embodiment of the present invention, the rectified gas outlet is cross-shaped and is arranged along the diagonal of the upper surface of the disc.

[0013] According to one embodiment of the present invention, a plurality of flame bodies, a plurality of precursor atomizers and the rectifier are arranged in an array at equal intervals on the disc body.

[0014] According to one embodiment of the present invention, the plurality of flame bodies include an inner ring flame body and an outer ring flame body, the inner ring flame bodies are spaced apart around the rectifier, the outer ring flame bodies are spaced apart along the edge of the disc, and the precursor atomizer is disposed between the inner ring flame bodies and the outer ring flame bodies.

[0015] According to one embodiment of the present invention, there are 20 flame bodies and 4 precursor atomizers. The 20 flame bodies, 4 precursor atomizers, and the rectifier are arranged in a 5x5 equally spaced array on the disc. The flame bodies include 4 inner ring flame bodies and 16 outer ring flame bodies. The 4 inner ring flame bodies are spaced around the rectifier, and the 16 outer ring flame bodies are spaced along the edge of the disc. There are 4 precursor atomizers, which are respectively located on the diagonal of the upper surface of the disc.

[0016] According to one embodiment of the present invention, the air-water vapor distribution chamber is located below the acetylene distribution chamber, the methane distribution chamber is located below the air-water vapor distribution chamber, and the lower surface of the disc body is provided with an acetylene inlet pipe, an air-water vapor inlet pipe and a methane inlet pipe. The acetylene inlet pipe passes through the methane distribution chamber and communicates with the air-water vapor distribution chamber. The air-water vapor inlet pipe passes through the methane distribution chamber and communicates with the air-water vapor distribution chamber. The methane inlet pipe communicates with the methane distribution chamber. The lower ends of the rectifier and the precursor atomizer extend out of the lower surface of the disc body.

[0017] According to one embodiment of the present invention, the height of the atomizing nozzle from the upper surface of the disc is 0.5-1.5 times the distance between two adjacent flame bodies.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the structure of an atomized flame synthesis burner with a uniform and adjustable temperature field according to an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of an atomized flame synthesis burner with a uniform and adjustable temperature field according to an embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of an atomized flame synthesis burner with a uniform and adjustable temperature field according to an embodiment of the present invention.

[0023] Figure 4 This is a cross-sectional view of an atomized flame synthesis burner with a uniformly adjustable temperature field according to an embodiment of the present invention.

[0024] Figure 5 This is a cross-sectional view of an atomized flame synthesis burner with a uniformly adjustable temperature field according to an embodiment of the present invention.

[0025] Figure 6 This is a partial cross-sectional view of an atomized flame synthesis burner with a uniformly adjustable temperature field according to an embodiment of the present invention.

[0026] Figure 7 This is a partial structural schematic diagram of an atomized flame synthesis burner with a uniformly adjustable temperature field according to an embodiment of the present invention.

[0027] Figure 8 This is a partial cross-sectional view of an atomized flame synthesis burner with a uniformly adjustable temperature field according to an embodiment of the present invention.

[0028] Figure 9 This is a partial cross-sectional view of an atomized flame synthesis burner with a uniformly adjustable temperature field according to an embodiment of the present invention.

[0029] Figure 10 This is a cross-sectional view of an atomized flame synthesis burner with a uniformly adjustable temperature field according to an embodiment of the present invention.

[0030] Figure 11 This is a cross-sectional view of an atomized flame synthesis burner with a uniformly adjustable temperature field according to an embodiment of the present invention.

[0031] Figure 12 This is a schematic diagram of the structure of multiple atomized flame synthesis burners with uniformly adjustable temperature fields combined together according to an embodiment of the present invention.

[0032] Figure reference numerals: 1. Uniform and adjustable temperature field atomizing flame synthesis burner; 10. Disc body; 11. Acetylene distribution chamber; 12. Air and water vapor distribution chamber; 13. Methane distribution chamber; 14. Acetylene inlet pipe; 15. Air and water vapor inlet pipe; 16. Methane inlet pipe; 20. Precursor atomizer; 21. Atomizing nozzle; 30. Flame body; 31. Flow stabilizing cone; 32. Guide tube; 33. Central injection pipe; 34. Conical jet orifice; 35. Radial jet orifice; 40. Rectifier; 41. Rectifier outlet; 42. Rectifier cavity; 43. Transition cone; 44. Rectifier inlet pipe. Detailed Implementation

[0033] This application is based on the findings and understanding of the following facts and issues:

[0034] The atomized flame synthesis burner in the related technology has poor temperature uniformity in the flame area and limited temperature regulation capability.

[0035] Furthermore, the atomized flame synthesis burner in the relevant technology is only suitable for small-batch production and cannot meet the ever-increasing production demands.

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] 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," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] The following description, with reference to the accompanying drawings, describes a uniformly adjustable atomized flame synthesizer 1 according to an embodiment of the present invention.

[0040] like Figures 1-12 As shown, the atomizing flame synthesis burner 1 with uniform and adjustable temperature field according to an embodiment of the present invention includes a disc body 10, a plurality of precursor atomizers 20, a plurality of flame bodies 30 and a rectifier 40.

[0041] The disc body 10 has an acetylene distribution chamber 11, an air-water vapor distribution chamber 12, and a methane distribution chamber 13. Multiple precursor atomizers 20 are disposed on the disc body 10 and spaced circumferentially. Each precursor atomizer 20 has an atomizing nozzle 21 at its upper end (indicated by the arrows in the figure, pointing vertically), and the atomizing nozzle 21 is higher than the upper surface of the disc body 10. A flame body 30 is disposed within the disc body 10 and communicates with its upper surface. Multiple flame bodies 30 surround each precursor atomizer 20, and the flame bodies 30 communicate with the acetylene distribution chamber 11, the air-water vapor distribution chamber 12, and the methane distribution chamber 13. A rectifier 40 is located at the center of the disc body 10, and its upper end has a rectifier gas outlet 41, which communicates with the upper surface of the disc body 10.

[0042] Specifically, the acetylene distribution chamber 11 is connected to an acetylene gas source, the air-water vapor distribution chamber 12 is connected to an air-water vapor source, and the methane distribution chamber 13 is connected to a methane gas source. The precursor atomizer 20 is connected to a precursor source. The rectifier 40 is connected to a rectifier gas source.

[0043] The rectified air source can be an air source.

[0044] airflow direction as Figure 9 As shown by the arrows, acetylene gas from the acetylene gas source is distributed to multiple flame bodies 30 through the acetylene distribution chamber 11, air and water vapor from the air and water vapor source are distributed to multiple flame bodies 30 through the air and water vapor distribution chamber 12, and methane from the methane gas source is distributed to multiple flame bodies 30 through the methane distribution chamber 13.

[0045] The rectified gas flows in through the rectifier 40 and is then ejected at high speed from the rectified gas outlet 41. Acetylene gas, after being stabilized and distributed in the acetylene distribution chamber 11, is ejected at high speed through the flame body 30. The mixed air and water vapor flow, after being stabilized and distributed in the air and water vapor distribution chamber 12, flows out at high speed from the flame body 30. Methane gas, after being stabilized and distributed in the methane distribution chamber 13, is ejected from the flame body 30. At the flame body 30, the mixed air, methane, and water vapor flow further mixes with the high-speed ejected acetylene jet, undergoing a comprehensive combustion reaction to form multiple clusters of micro-element flames, thereby constructing a uniform temperature field.

[0046] like Figure 10 As shown, the precursor is atomized by the precursor atomizer 20 and then sprayed out through the atomizing nozzle 21. In the high-temperature environment of the micro-flame, it undergoes a series of processes such as pyrolysis, nucleation, aggregation and growth to finally form nanoparticles.

[0047] like Figure 11As shown, the rectified gas ejected from the rectified gas outlet 41 is beneficial for drawing in the surrounding micro-flames, causing the surrounding micro-flames to have a converging effect. When the flow rate of the rectified gas 40 is increased, thereby increasing the jet velocity ejected from the rectified gas outlet 41, the converging and rectifying effect on the surrounding flames will be enhanced. When the flow rate of the rectified gas 40 is decreased, thereby decreasing the jet velocity ejected from the rectified gas outlet 41, the converging and rectifying effect on the surrounding flames will be weakened.

[0048] When a high-temperature field needs to be constructed, the flow rate of acetylene gas is increased while the flow rate of methane gas is decreased, and the vapor flow is shut off. When a medium-temperature field needs to be constructed, the acetylene gas flow is shut off while the flow rate of methane gas is increased, and the vapor flow is shut off. When a low-temperature field needs to be constructed, the acetylene gas flow is shut off while the flow rate of methane gas is increased, and the vapor flow is turned on. In this way, flame temperatures in the range of 800°C to 2000°C can be constructed to meet the synthesis requirements of different types of nanopowder materials.

[0049] According to an embodiment of the present invention, the atomized flame synthesis burner 1 with a uniform and adjustable temperature field is provided by setting multiple precursor atomizers 20 and multiple flame bodies 30. The multiple precursor atomizers 20 are arranged on the disc body 10 and spaced apart along the circumference of the disc body 10. Each precursor atomizer 20 is surrounded by multiple flame bodies 30. This allows multiple flame bodies 30 to surround each precursor atomizer 20, forming a uniform flame temperature field around each precursor atomizer 20. This can improve the temperature uniformity of the high-temperature environment after the precursor is ejected, thereby improving the thermal history consistency of the precursor, improving the uniformity of particle size, crystalline phase and morphology of the nanopowder material, and improving the synthesis quality of the nanopowder.

[0050] Furthermore, by making the atomizing nozzle 21 higher than the upper surface of the disc 10, the distance between the atomizing nozzle 21 and the root of the micro-flame of the flame body 30 can be increased, reducing the problem of poor temperature uniformity of the temperature field of the atomized jet caused by the temperature difference at the root of the micro-flame. This further facilitates the formation of a relatively uniform temperature field around the atomized jet of the precursor atomizer 20, further improving the temperature uniformity of the high-temperature environment after the precursor is ejected, and further improving the synthesis quality of nanopowders.

[0051] Furthermore, by setting up a rectifier 40, the rectified gas ejected from the rectified gas outlet 41 is conducive to entraining the surrounding micro-flames, causing the surrounding micro-flames to produce a gathering effect. The gathering and rectification effect on the surrounding flames can be adjusted by adjusting the gas flow rate of the rectifier 40, thereby further facilitating the construction of a uniform flame temperature field and further improving the synthesis quality of nanopowders.

[0052] Furthermore, by setting an acetylene distribution chamber 11, an air-water vapor distribution chamber 12, and a methane distribution chamber 13 within the disk body 10, and connecting the flame body 30 to the acetylene distribution chamber 11, the air-water vapor distribution chamber 12, and the methane distribution chamber 13 respectively, the temperature of the overall temperature field can be flexibly controlled by adjusting the distribution of different airflow rates among acetylene gas, methane gas, and water vapor. The temperature controllability is good, which can meet the synthesis requirements of different types of nanopowder materials.

[0053] Therefore, the atomized flame synthesis burner 1 with uniform and adjustable temperature field according to the embodiments of the present invention has the advantages of good flame temperature field uniformity, high quality of nanopowder synthesis, good temperature controllability, and strong adaptability.

[0054] The following description, with reference to the accompanying drawings, describes a specific embodiment of an atomized flame synthesis burner 1 with a uniformly adjustable temperature field according to the present invention.

[0055] In some specific embodiments of the present invention, such as Figures 1-12 As shown, the atomizing flame synthesis burner 1 with uniform and adjustable temperature field according to an embodiment of the present invention includes a disc body 10, a plurality of precursor atomizers 20, a plurality of flame bodies 30 and a rectifier 40.

[0056] Specifically, such as Figures 6-9As shown, the flame body 30 includes a flow-stabilizing cone 31, a guide tube 32, and a central injection pipe 33. The flow-stabilizing cone 31 is connected to the upper surface of the disk body 10 and its inner diameter gradually decreases from top to bottom. The inner circumferential surface of the flow-stabilizing cone 31 is provided with a plurality of tapered jet holes 34 spaced apart along the circumference of the flow-stabilizing cone 31. The axial direction of the tapered jet holes 34 is perpendicular to the inner circumferential surface of the flow-stabilizing cone 31, and the tapered jet holes 34 are connected to the acetylene distribution chamber 11. The upper end of the guide tube 32 is connected to the lower end of the flow-stabilizing cone 31 and is coaxially arranged with the flow-stabilizing cone 31. The lower end of the guide tube 32 extends into the air-water vapor distribution chamber 12 and is connected to the air-water vapor distribution chamber 12. The lower end of the guide tube 32 is lower than the upper surface of the air-water vapor distribution chamber 12. The upper end of the central injection pipe 33 is a closed cone, and its lower end is connected to the methane distribution chamber 13. The lower end of the central injection pipe 33 is flush with the upper surface of the methane distribution chamber 13. The central injection pipe 33 is located radially inside the guide tube 32 and is coaxially arranged with the guide tube 32. The circumferential surface of the central injection pipe 33 is provided with multiple radial jet holes 35 spaced along the circumference and axial direction of the central injection pipe 33. All radial jet holes 35 are higher than the lower end of the guide tube 32. Specifically, the inner diameter of the conical jet holes 34 is 0.5 mm to 1.5 mm and there are 12 to 20 of them. Acetylene gas in the acetylene distribution chamber 11 is ejected at high speed through multiple conical jet holes 34 and converges at the upper center of the flame body 30, which can promote rapid mixing with the downstream gas flow. The mixed air and water vapor gas flow in the air-water vapor distribution chamber 12 flows in through the annular channel outside the central injection pipe 33 inside the guide tube 32 and flows out at high speed from bottom to top. Methane gas from the methane distribution chamber 13 is ejected through the central injection pipe 33 along the radial jet orifice 35 and rapidly mixed with the airflow flowing from bottom to top inside the guide tube 32. Finally, at the flow stabilizing cone 31, the mixed gas flow of methane, air, and water vapor further mixes with the high-speed ejected acetylene jet to undergo an overall combustion reaction, forming multiple clusters of micro-element flames, thus facilitating the construction of a uniform temperature field.

[0057] More specifically, such as Figure 4 As shown, the rectifying gas 40 includes an outlet, a rectifying gas cavity 42, a transition cone 43, and a rectifying gas inlet pipe 44. A rectifying gas outlet 41 is located on the outlet. The upper end of the rectifying gas cavity 42 is connected to the outlet. The upper end of the transition cone 43 is connected to the rectifying gas cavity 42, and the inner diameter of the transition cone 43 gradually decreases from top to bottom. The upper end of the rectifying gas inlet pipe 44 is connected to the lower end of the transition cone 43. Specifically, the rectifying gas flows in through the rectifying gas inlet pipe 44, flows sequentially through the transition cone 43 and the rectifying gas cavity 42, and is then ejected at high speed from the rectifying gas outlet 41. This improves the stability and uniformity of the airflow ejected from the rectifying gas outlet 41, preventing changes in the airflow rate from altering the uniformity of the flame temperature field.

[0058] Advantageously, such as Figure 1 and Figure 12As shown, the cross-section of the disk 10 in the horizontal plane is square. This facilitates the combination of multiple atomizing flame synthesis burners 1 with uniformly adjustable temperature fields, and the distribution conditions of the flame field after combination do not change significantly, which helps to improve the temperature uniformity of the combined flame field. This makes it easier to use multiple atomizing flame synthesis burners 1 with uniformly adjustable temperature fields for atomizing flame synthesis at the same time, thereby improving the synthesis efficiency of nanopowders and increasing the yield of nanopowders.

[0059] More advantageously, such as Figure 1 As shown, the rectified gas outlet 41 is cross-shaped and arranged along the diagonal of the upper surface of the disk 10. This facilitates increasing the jet surface area of ​​the rectified gas outlet 41, making the rectified gas ejected from the rectified gas outlet 41 more effective in entraining the surrounding micro-element flames, thus creating a converging effect on the surrounding micro-element flames.

[0060] Furthermore, such as Figure 1 As shown, multiple flame bodies 30, multiple precursor atomizers 20, and rectifiers 40 are arranged in an array at equal intervals on the disc. This ensures that the distances between adjacent flame bodies 30, between flame bodies 30 and precursor atomizers 20, and between flame bodies 30 and rectifiers 40 are all equal, which can further facilitate the improvement of the uniformity of the flame temperature field.

[0061] Furthermore, such as Figure 1 As shown, the plurality of flame bodies 30 include an inner ring flame body and an outer ring flame body. The inner ring flame bodies are spaced apart around the fluid rectifier 40, and the outer ring flame bodies are spaced apart along the edge of the disc 10. The precursor atomizer 20 is located between the inner ring flame bodies and the outer ring flame bodies. This facilitates the arrangement of the flame bodies 30 around the precursor atomizer 20 and around the fluid rectifier 40, thereby further improving the uniformity of the flame temperature field.

[0062] In some embodiments, such as Figure 1 As shown, there are 20 flame bodies 30 and 4 precursor atomizers 20. The 20 flame bodies 30, 4 precursor atomizers 20, and rectifiers 40 are arranged in a 5x5 equally spaced array on the disc 10. The flame bodies 30 include 4 inner ring flame bodies and 16 outer ring flame bodies. The 4 inner ring flame bodies are spaced around the rectifiers 40, and the 16 outer ring flame bodies are spaced along the edge of the disc 10. There are 4 precursor atomizers 20, which are respectively located on the diagonal lines of the upper surface of the disc 10. This arrangement facilitates equal distances between adjacent flame bodies 30, between flame bodies 30 and precursor atomizers 20, and between flame bodies 30 and rectifiers 40. It also facilitates the arrangement of flame bodies 30 around precursor atomizers 20 and rectifiers 40, further improving the uniformity of the flame temperature field.

[0063] Figure 1 and Figure 4 Atomizing flame synthesizer 1 with a uniformly adjustable temperature field is shown according to some examples of the present invention. For example... Figure 1 and Figure 4 As shown, the air-water vapor distribution chamber 12 is located below the acetylene distribution chamber 11, and the methane distribution chamber 13 is located below the air-water vapor distribution chamber 12. The lower surface of the disc body 10 is provided with an acetylene inlet pipe 14, an air-water vapor inlet pipe 15, and a methane inlet pipe 16. The acetylene inlet pipe 14 passes through the methane distribution chamber 13 and the air-water vapor distribution chamber 12, communicating with the acetylene distribution chamber 11. The air-water vapor inlet pipe 15 passes through the methane distribution chamber 13 and communicates with the air-water vapor distribution chamber 12. The methane inlet pipe 16 communicates with the methane distribution chamber 13. The lower ends of the rectifying fluid 40 and the precursor atomizer 20 extend beyond the lower surface of the disc body 10. This facilitates the communication of the acetylene distribution chamber 11, the air-water vapor distribution chamber 12, and the methane distribution chamber 13 with their respective gas sources, and also facilitates the assembly of the disc bodies 10.

[0064] Optionally, the height of the atomizing nozzle 21 from the upper surface of the disc 10 is 0.5-1.5 times the distance between two adjacent flame bodies 30. This helps to ensure that the atomizing nozzle 21 has a suitable distance from the flame root of the flame body 30, thereby ensuring that the atomized precursor sprayed by the atomizing nozzle 21 is in a uniform temperature field.

[0065] Other configurations and operations of the atomizing flame synthesis burner 1 with uniform and adjustable temperature field according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example 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.

[0067] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A uniformly adjustable temperature field atomizing flame synthesis burner, characterized in that, include: The disc body has an acetylene distribution chamber, an air-water vapor distribution chamber, and a methane distribution chamber. Multiple precursor atomizers are provided on the disc body and spaced apart circumferentially along the disc body. The upper end of each precursor atomizer is provided with an atomizing nozzle, which is higher than the upper surface of the disc body. Multiple flame bodies are disposed within the disc body and communicate with the upper surface of the disc body. Each precursor atomizer is surrounded by multiple flame bodies. The flame bodies are communicated with the acetylene distribution chamber, the air-water vapor distribution chamber, and the methane distribution chamber. A rectifying fluid is located at the center of the disk body, and a rectifying gas outlet is provided at the upper end of the rectifying fluid. The rectifying gas outlet is connected to the upper surface of the disk body. The flame body includes: a flow-stabilizing cone, which is connected to the upper surface of the disk body and has an inner diameter that gradually decreases from top to bottom. The inner circumferential surface of the flow-stabilizing cone has a plurality of tapered jet holes spaced apart along the circumference of the flow-stabilizing cone. The axial direction of the tapered jet holes is perpendicular to the inner circumferential surface of the flow-stabilizing cone, and the tapered jet holes are connected to the acetylene distribution chamber; a guide tube, the upper end of which is connected to the lower end of the flow-stabilizing cone and is coaxially arranged with the flow-stabilizing cone. The lower end of the guide tube extends into the air-water vapor distribution chamber and is connected to the air-water vapor distribution chamber. The lower end of the guide tube is lower than the upper surface of the air-water vapor distribution chamber; and a center jet. The central injection pipe has a closed conical upper end and its lower end connected to the methane distribution chamber. The lower end of the central injection pipe is flush with the upper surface of the methane distribution chamber. The central injection pipe is located radially inside the guide tube and is coaxially arranged with the guide tube. The circumferential surface of the central injection pipe is provided with a plurality of radial jet holes spaced apart along the circumference and axial direction of the central injection pipe. The radial jet holes are all higher than the lower end of the guide tube. The rectifying fluid includes: an outlet section, on which the rectifying gas outlet is located; a rectifying gas chamber, the upper end of which is connected to the outlet section; a transition cone, the upper end of which is connected to the rectifying gas chamber, the inner diameter of which gradually decreases from top to bottom; and a rectifying gas inlet pipe, the upper end of which is connected to the lower end of the transition cone.

2. The atomized flame synthesis burner with uniform and adjustable temperature field according to claim 1, characterized in that, The disk body has a square cross-section in the horizontal plane.

3. The atomizing flame synthesis burner with uniform and adjustable temperature field according to claim 2, characterized in that, The rectified gas outlet is cross-shaped and is located along the diagonal of the upper surface of the disc.

4. The atomizing flame synthesis burner with uniform and adjustable temperature field according to claim 1, characterized in that, Multiple flame bodies, multiple precursor atomizers, and the rectifier are arranged in an array at equal intervals on the disc.

5. The atomized flame synthesis burner with uniform and adjustable temperature field according to claim 1, characterized in that, The plurality of flame bodies include an inner ring flame body and an outer ring flame body. The inner ring flame bodies are spaced apart around the rectifier, and the outer ring flame bodies are spaced apart along the edge of the disc. The precursor atomizer is located between the inner ring flame bodies and the outer ring flame bodies.

6. The atomizing flame synthesis burner with uniform and adjustable temperature field according to claim 1, characterized in that, There are 20 flame bodies and 4 precursor atomizers. The 20 flame bodies, 4 precursor atomizers, and the rectifier are arranged in a 5x5 equally spaced array on the disc. The flame bodies include 4 inner ring flame bodies and 16 outer ring flame bodies. The 4 inner ring flame bodies are arranged at intervals around the rectifier, and the 16 outer ring flame bodies are arranged at intervals along the edge of the disc. There are 4 precursor atomizers, which are respectively located on the diagonal of the upper surface of the disc.

7. The atomizing flame synthesis burner with uniform and adjustable temperature field according to claim 1, characterized in that, The air-water vapor distribution chamber is located below the acetylene distribution chamber, and the methane distribution chamber is located below the air-water vapor distribution chamber. The lower surface of the disc is provided with an acetylene inlet pipe, an air-water vapor inlet pipe, and a methane inlet pipe. The acetylene inlet pipe passes through the methane distribution chamber and communicates with the air-water vapor distribution chamber. The air-water vapor inlet pipe passes through the methane distribution chamber and communicates with the air-water vapor distribution chamber. The methane inlet pipe communicates with the methane distribution chamber. The lower ends of the rectifier and the precursor atomizer extend out of the lower surface of the disc.

8. The atomizing flame synthesis burner with uniform and adjustable temperature field according to claim 1, characterized in that, The height of the atomizing nozzle from the upper surface of the disc is 0.5-1.5 times the distance between two adjacent flame bodies.

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