Super-adiabatic pure oxygen burner

Abstract

The utility model discloses a super-adiabatic pure oxygen burner which comprises a burner shell penetrating through and fixedly connected to the wall of a hearth, the peripheral wall, located on the upper side of the wall of the hearth, of the burner shell is wrapped with refractory materials in the hearth, and an ignition rod and an annularly-arranged fuel spray pipe are arranged in the burner shell. The control module is electrically connected with the adjusting execution module, the adjusting execution module is connected with the ignition rod and the annularly-arranged fuel spray pipe through two fuel pipes, a first-stage super-adiabatic combustion reaction disc is fixed to the inner wall of the upper end of the combustor shell, a second-stage super-adiabatic combustion reaction disc is arranged above the first-stage super-adiabatic combustion reaction disc, and a second-stage super-adiabatic combustion reaction disc is arranged above the second-stage super-adiabatic combustion reaction disc. And the second-stage super-adiabatic combustion reaction disc is fixedly connected with the hearth wall through a plurality of adjustable fire-resistant supporting rods, and an oxygen inlet is formed in the lower end of the side wall of the combustor shell. According to the super-adiabatic pure oxygen burner, the performance of energy conservation and emission reduction of the burner is improved, the heat efficiency of the burner is obviously improved, and generation of CO can be restrained easily.

Description

Technical Field

[0001] The utility model relates to the field of burners, in particular to a super-insulated pure oxygen burner. Background Art

[0002] At present, most of the burners in the petrochemical industry, metallurgy, building materials and other industries still use burners that use air as a combustion aid. However, oxygen in the air only accounts for 21%, and the air is more nitrogen, which accounts for nearly 79%. During combustion, only oxygen and fuel in the air undergo oxidation reactions, and nitrogen does not participate in combustion. Moreover, nitrogen and oxygen produce NOx at high temperatures. The nitrogen oxides produced will have a negative impact on the atmospheric environment. They are the main components of PM3.5 and will take away a lot of heat when discharged. Traditional burners and combustion systems have the problem of high pollutant emissions. The thermal efficiency of the burner is low, and the NOx content in the flue gas is high, some as high as 170ppm. The general generation mechanism of NOx generated in the boiler is thermal, and high temperature and excess air coefficient affect NOx generation in a more complex way. Reducing local intense combustion and avoiding the existence of high temperature areas as much as possible are ways to reduce the generation of NOx during combustion. The low NOx burners and ultra-low NOx burners currently used can reduce the outlet NOx content to 50mg / m3, but there are also many heating furnaces with low furnace temperatures, or they are designed for external mixing combustion, resulting in outlet COe content greater than 50mg / m3, and some outlet Coe content greater than 500mg / m3. This situation will cause heat loss and waste, which is not in line with the concept of energy saving and environmental protection.

[0003] Compared with traditional burners, the theoretical oxidation amount required by pure oxygen burners is greatly reduced, so the combustion exhaust volume is also greatly reduced, and less heat is taken away, achieving the purpose of energy saving. In addition, almost no NOx is produced in the combustion products, and more than 95% is CO2. CO2 can be sealed and reused, achieving the purpose of carbon neutrality and emission reduction.

[0004] As a new type of energy-saving combustion equipment, pure oxygen burners have attracted extensive research and practice. The nitrogen oxide pollution produced by pure oxygen burners is extremely low, which can also effectively save fuel and greatly reduce the workload of flue gas treatment. The theoretical flame temperature of pure oxygen combustion is as high as 2700℃. If the shape and length of the flame combustion are not controlled, the flame will scour the furnace tubes and pipe racks or materials. Only by controlling the shape and length of the flame can it be ensured that there is no local overheating in the radiation chamber. The high-temperature flame scouring of the materials in the furnace will cause creep, high-temperature deformation and damage to the materials. Controlling the shape and length of the flame reduces the requirements for the strength and heat resistance of the materials in the radiation chamber. However, the existing pure oxygen burners have the disadvantages of high local combustion temperature, uneven combustion, unconcentrated combustion flame, short flame length, easy tempering, and short service life.

[0005] Adiabatic combustion is an idealized combustion, in which the flame formed by combustion never transfers heat to the external environment or other surrounding objects. Since there is no heat transfer or heat dissipation loss, the heat of combustion released by the fuel during adiabatic combustion can be used to heat the combustion products themselves, raising their temperature to a temperature that cannot be reached by general combustion. This is not only conducive to the complete combustion of the fuel and significantly improves the combustion efficiency, but also creates good thermodynamic conditions for the full utilization of the heat of combustion. Superadiabatic combustion refers to the use of enhanced radiation or heat storage methods during the combustion process to use the heat as much as possible to heat the materials and the fuel and oxidant upstream of the reaction area, thereby reducing the heat in the flue gas and enhancing the combustion reaction.

[0006] At present, the super-adiabatic combustion technology generally tends to use porous ceramic media to enhance heat storage and radiation, thereby reducing heat escape. This porous medium refers to a porous medium with many irregular pores inside and a very high specific surface area. However, this type of structure makes fluid flow more difficult, greatly increasing the difficulty of stable combustion. Innovative use of structured pore structures to replace irregular pores. The structured pores not only have good machinability, but also can shape and guide the flow of fluids. The specific surface area is larger than that of ordinary thermal storage materials, which can ensure the stability of combustion while improving performance.

[0007] In summary, a super-adiabatic pure oxygen burner has been developed, which complements the advantages and disadvantages of pure oxygen combustion technology and porous medium combustion technology, and can not only solve the problems of traditional combustion, but also make up for the shortcomings of pure oxygen combustion. Utility Model Content

[0008] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a super-insulated pure oxygen burner. In order to solve the above technical problems, the utility model provides the following technical solutions:

[0009] The utility model discloses a super-adiabatic pure oxygen burner, comprising a burner shell which penetrates through and is fixedly connected to a furnace wall, the outer peripheral wall of the burner shell located on the upper side of the furnace wall is wrapped with furnace refractory material, an ignition rod and a ring-shaped fuel nozzle are arranged in the burner shell, a control module is electrically connected to an adjustment execution module, the adjustment execution module is respectively connected to the ignition rod and the ring-shaped fuel nozzle through two fuel pipes, a first-stage super-adiabatic combustion reaction disk is fixed to the inner wall of the upper end of the burner shell, and a premixing swirl plate is arranged in the first-stage super-adiabatic combustion reaction disk, a second-stage super-adiabatic combustion reaction disk is arranged above the first-stage super-adiabatic combustion reaction disk, and the second-stage super-adiabatic combustion reaction disk is fixedly connected to the furnace wall through a plurality of adjustable refractory support rods, and an oxygen inlet is arranged at the lower end of the side wall of the burner shell.

[0010] Preferably, a plurality of the adjustable refractory support rods are arranged at equal intervals along the circumferential direction, the upper ends of the adjustable refractory support rods are fixedly connected to the second-stage superadiabatic combustion reaction disk via connecting screws, and the lower ends of the adjustable refractory support rods are fixedly connected to the furnace wall via fixing nuts.

[0011] Preferably, the first-stage super-insulation combustion reaction disk and the second-stage super-insulation combustion reaction disk are porous ceramics or entities with porous structures with silicon carbide, silicon nitride, mullite, cordierite, aluminum titanate, alumina, diatomaceous earth, zircon, and magnesite as matrix materials.

[0012] Preferably, the first-stage superadiabatic combustion reaction disk is a hollow rotating body with a pore structure on its upper part, which can guide the internal fluid to the outside of the cylinder according to a specific rule. The upper part of the first-stage superadiabatic combustion reaction disk has a taper and a Venturi tube structure.

[0013] Preferably, the second-stage superadiabatic combustion reaction disk is a cylinder with a diameter in the range of 100-800 mm and a height in the range of 20 mm-200 mm.

[0014] Preferably, when the second-stage superadiabatic combustion reaction disk is a solid structure, its cross-sectional structure is one of a straight hole structure, a tapered hole structure, a Venturi hole structure, and a stepped through hole structure.

[0015] Preferably, when the second-stage super-adiabatic combustion reaction disk is a porous ceramic, its structure is one of a high-alumina ceramic ball structure and a silicon carbide porous ceramic structure.

[0016] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0017] 1) Pure oxygen combustion technology combined with super-adiabatic combustion technology can optimize the disadvantages of high-temperature concentration in pure oxygen combustion while producing ultra-low NOx, further improving the energy-saving and emission-reduction performance of the burner.

[0018] 2) Pure oxygen combustion can inhibit the generation of NOx from the source, but it has the disadvantages of high local combustion temperature and unconcentrated combustion flame. Combined with super-adiabatic combustion technology, the local high combustion temperature will be concentrated on the super-adiabatic combustion heat storage body, and the super-adiabatic combustion heat storage body will heat the material or unburned fuel gas more evenly through radiation.

[0019] 3) The super-adiabatic combustion reaction disk has the characteristics of high thermal conductivity and high specific surface area. When the flame burns on the second-stage super-adiabatic combustion reaction disk, the second-stage super-adiabatic combustion reaction disk can absorb more heat. The heat capacity of the second-stage super-adiabatic combustion reaction disk is much larger than the heat capacity of the same volume of gas. The second-stage super-adiabatic combustion reaction disk is used to replace the free space. The heat released by combustion can be quickly conducted to the second-stage super-adiabatic combustion reaction disk, and part of the heat is stored in the second-stage super-adiabatic combustion reaction disk, and part of the heat is radiated and conducted to the adjacent solid medium. Part of the heat stored in the second-stage super-adiabatic combustion reaction disk will begin to heat the premixed gas or separated fuel and oxide downstream of the reaction zone on the lower surface of the second-stage super-adiabatic combustion reaction disk. The proportion of heat released by combustion that is carried away by flue gas is reduced, and more heat is fully used to enhance the combustion reaction, so that the thermal efficiency of the burner is significantly increased.

[0020] 4) The super-adiabatic combustion reaction disk can significantly enhance the diffusion and heat transfer process in the gas by disturbing the airflow. The heat released by the fuel efficiently enters the super-adiabatic combustion reaction disk, so the temperature peak of the reaction zone and the temperature of the products after the reaction are significantly reduced. At the same time, the high emissivity coexisting with the high thermal conductivity makes the temperature in the combustion chamber tend to be uniform, avoiding the formation of local high-temperature areas, and can significantly reduce NOx emissions. The NOx emissions of this burner are less than 20ppm.

[0021] 5) The burner adopts premixed combustion, and the reaction zone is large, the reaction time is longer, the combustion is more sufficient and complete, which is conducive to inhibiting the formation of CO.

[0022] 6) A second-stage super-adiabatic combustion reaction disk can be added to the original burner to achieve technical upgrading and transformation of the original burner, which has the advantages of low transformation cost, short shutdown and transformation time, and significant emission reduction effect after transformation.

[0023] 7) The burner has a wide power adjustment range and can achieve high-intensity combustion. Since the temperature of the second-stage super-adiabatic combustion reaction disk is higher than the combustion temperature of the mixed gas, increasing the flow rate of the mixed gas can increase the power density.

[0024] 8) Traditional boilers need enough space to accommodate free flames. This technology concentrates the combustion range to the second-stage super-adiabatic combustion reaction disk, which can reduce the size of the boiler.

[0025] 9) The super-insulating combustion reaction disk is a porous ceramic formed or made of silicon carbide, which has the advantages of high thermal conductivity, thermal shock resistance, light weight, high strength, excellent thermal shock resistance and excellent processing performance, and can withstand the thermal stress caused by frequent startup and temperature gradient.

[0026] 10) The height of the second-stage super-adiabatic combustion reaction disk from the fuel nozzle is adjustable, and the height can be freely adjusted at the construction site, or subsequently adjusted according to the aging of the burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the structure of a super-insulated pure oxygen burner of the utility model.

[0029] Figure 2 This is a side view of a super-insulated pure oxygen burner of the utility model

[0030] Figure 3 This is a side cross-sectional view of a super-insulated pure oxygen burner of the utility model.

[0031] Figure 4 A top view of the second-stage superadiabatic combustion reaction disk

[0032] Figure 5 A top view of the burner body in this system

[0033] Figure 6 Schematic diagram of fuel and combustion aid supply

[0034] Figure 7-12 Schematic diagrams of six structures of the second-stage superadiabatic combustion reaction disk.

[0035] Figure 13-15 Schematic diagrams of three structures of the cross section of the upper end of the first-stage superadiabatic combustion reaction disk.

[0036] Among them, 1. Second-stage super-adiabatic combustion reaction disk; 2. Connecting screws; 3. Adjustable refractory support rods; 4. First-stage super-adiabatic combustion reaction disk; 5. Refractory materials in the furnace; 6. Furnace wall; 7. Burner shell; 8. Premixing swirl plate; 9. Ignition rod; 10. Annularly arranged fuel nozzles; 11. Oxygen inlet; 12. Adjustment execution module; 13. Control module. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0038] Example

[0039] like Figures 1 to 15As shown, a super-adiabatic pure oxygen burner comprises a burner shell 7 penetrating through and fixedly connected to a furnace wall 6, the burner shell 7 is located on the outer peripheral wall on the upper side of the furnace wall 6 and is wrapped with a furnace refractory material 5, an ignition rod 9 and a ring-arranged fuel nozzle 10 are arranged in the burner shell 7, a control module 13 is electrically connected to an adjustment execution module 12, and the adjustment execution module 12 is respectively connected to the ignition rod 9 and the ring-arranged fuel nozzle 10 through two fuel pipes, a first-stage super-adiabatic combustion reaction disk 4 is fixed to the inner wall of the upper end of the burner shell 7, and a premixing swirl plate 8 is arranged in the first-stage super-adiabatic combustion reaction disk 4, a second-stage super-adiabatic combustion reaction disk 1 is arranged above the first-stage super-adiabatic combustion reaction disk 4, and the second-stage super-adiabatic combustion reaction disk 1 is fixedly connected to the furnace wall 6 through a plurality of adjustable refractory support rods 3, and an oxygen inlet 11 is arranged at the lower end of the side wall of the burner shell 7.

[0040] During use of the technical solution, fuel and high-concentration oxygen enter the regulation execution module, in which the pressure and flow of the two gases are monitored and dynamically adjusted according to preset values, and in which adjustment and emergency cut-off can be performed.

[0041] The fuel passes through the fuel configuration module, and after being pressure- and flow-regulated, enters the ignition rod 9 and the annularly arranged fuel nozzle 10, and the oxidant enters the central cavity of the burner.

[0042] In the central cavity of the burner, oxygen passes through the premixing swirl plate 8, transforms from laminar flow to turbulent flow, and mixes with the fuel gas; the mixed gas reaches the first-stage superadiabatic combustion reaction disk 4 of the burner, where it will be enhanced by the upper cone and pore structure and pass through the outlet, and finally below the second-stage superadiabatic combustion reaction disk 1, where it will be heated and start the combustion reaction.

[0043] When the burner is cold-started, the temperature of the second-stage superadiabatic combustion reaction disk is low, and the temperature of the gas preheated by the second-stage superadiabatic combustion reaction disk 1 is also low, and the superadiabatic combustion reaction cannot start. Therefore, when the burner is cold-started, the ignition rod 9 will ignite and continue to ignite for a period of time; at the initial stage of ignition, the burner will burn in a free diffusion flame mode, continuously heating the second-stage superadiabatic combustion reaction disk 1, and the ignition rod 9 will continue to burn.

[0044] When the preset time comes, the fuel configuration module will cut off the fuel supply in the ignition rod 9 and open the flow of the annularly arranged fuel nozzle 10. When the flame front propagation speed is less than the fuel outlet speed, the flame will rise and move to the second-stage superadiabatic combustion reaction disk 1 and start a stable reaction.

[0045] During combustion, the flame will form a "combustion surface" composed of multiple small flames above the second-stage super-adiabatic combustion reaction disk 1.

[0046] The "combustion surface" makes the combustion reaction no longer concentrated in a limited volume, but the reaction is more uniform, the temperature will also be more uniform, and NOx emissions will be reduced.

[0047] During cold start-up, the NOx emission of the flue gas at the outlet is around 100ppm. After the superadiabatic combustion reaction begins, the NOx emission of the flue gas at the outlet will drop to below 40ppm for stable combustion.

[0048] The principle and advantages of this utility model: The installation and debugging method of this super-insulation pure oxygen burner has the following steps:

[0049] The burner is installed as follows: the burner shell 7 is fixedly connected to the furnace wall 6, the second-stage super-adiabatic combustion reaction disk 1 is connected to the adjustable refractory support rod 3, and the lower end of the adjustable refractory support rod 3 is connected to the furnace wall 6 with a fixing nut. After the second-stage super-adiabatic combustion reaction disk 1 is adjusted to a preset height, the second-stage super-adiabatic combustion reaction disk 1 and the adjustable refractory support rod 3 are fastened with connecting screws 2, and finally the fixing nuts are tightened to complete the main body installation. A section of thread prefabricated at the bottom of the adjustable refractory support rod 3 is used as an adjustment margin to adjust the height of the second-stage super-adiabatic burner reaction disk 1 relative to the furnace wall 6.

[0050] After the main body is assembled, each pipeline supplies gas according to the predetermined calculation requirements, and preparations for shutdown and backfire prevention are made at any time during the test; first, ignite the ignition rod 9, burn for a certain period of time, wait for the temperature of the superadiabatic combustion reaction disk to rise, and then start the fuel delivery of the annularly arranged fuel nozzle 10; wait for the main flame to stabilize, close the ignition rod 9 fuel supply, the temperature of the superadiabatic combustion reaction disk continues to rise, and finally achieve stable superadiabatic combustion reaction combustion.

[0051] In pure oxygen combustion, the N2 content in the oxidant is close to 0, which can inhibit the generation of NOx from the source, but there are disadvantages such as high local combustion temperature and unconcentrated combustion flame. Combined with super-adiabatic combustion technology, the local high combustion temperature will be concentrated on the super-adiabatic combustion heat storage body, and the super-adiabatic combustion heat storage body will heat the material or unburned fuel gas more evenly through radiation.

[0052] Pure oxygen combustion technology combined with super-adiabatic combustion technology can optimize the disadvantages of high-temperature concentration in pure oxygen combustion while producing ultra-low NOx.

[0053] The burner uses high-concentration oxygen as a combustion aid and is configured so that the combustion aid can be mixed with flue gas. It uses a cylindrical heat storage body with a large specific surface area - the second-stage super-adiabatic combustion reaction disk, and utilizes its characteristics of many pores and high thermal conductivity so that when the flame burns on the first-stage super-adiabatic combustion reaction disk 4, the second-stage super-adiabatic combustion reaction disk 1 can absorb heat. This part of heat is used to heat the premixed gas or separated fuel and oxide downstream of the second-stage super-adiabatic combustion reaction 1. When external heat loss is ignored, the flame temperature can exceed the adiabatic flame temperature corresponding to the unpreheated mixed gas. Storing heat in the second-stage super-adiabatic combustion reaction disk 1 will allow more heat to be used to enhance the combustion reaction, which will significantly increase the thermal efficiency of the burner.

[0054] The flame is concentrated near the second-stage super-adiabatic combustion reaction disk 1, which can disperse the high-temperature area, reduce the maximum temperature of pure oxygen combustion, and transfer the temperature to the material through radiation through the high specific surface area, thereby achieving the maximum utilization efficiency of the fuel calorific value. The burner can save fuel and thus has the characteristics of energy saving.

[0055] The first-stage super-adiabatic combustion reaction disk 4 can appropriately disturb the airflow through the pore structure, so that the heat released by the fuel can efficiently enter the second-stage super-adiabatic combustion reaction disk 1. Therefore, the temperature peak of the reaction zone and the temperature of the products after the reaction will be significantly reduced. In addition, by using pure oxygen combustion technology, there is very little N2 in the combustion aid, and thermal and rapid NOx will be suppressed, which can significantly reduce NOx emissions and achieve the design goals of environmental protection and emission reduction.

[0056] The combustion reaction of this burner is concentrated around the second-stage super-adiabatic combustion reaction disk 1. Different from the long straight flame of the traditional burner, the combustion reaction area of ​​this burner is small. When oxygen passes through the swirl plate in the burner cavity, the laminar flow in this area will be transformed into turbulent flow. In this fluid transition zone, the two gases will be fully premixed. The oxidant uses high-concentration oxygen and can be configured as a mixed gas of flue gas and oxygen in a certain proportion, which is different from the air used in ordinary burners.

[0057] The ignition rod 9 can monitor the flame and re-ignite the flame when it goes out, thus enhancing the combustion effect at the beginning of combustion and when the combustion is unstable.

[0058] The height of the second-stage super-adiabatic combustion reaction disk 1 from the burner body can be adjusted. By adjusting the height of the second-stage super-adiabatic combustion reaction disk 1, the optimal combustion height is found, the flame disk temperature is maintained at 1200-1300 degrees, and the generation of nitrogen oxides is suppressed.

[0059] The first-stage super-insulation combustion reaction disk 4 and the second-stage super-insulation combustion reaction disk 1 are porous ceramics or entities with porous structures with silicon carbide, silicon nitride, mullite, cordierite, aluminum titanate, alumina, diatomaceous earth, zircon, magnesite, etc. as matrix materials, and have excellent thermal conductivity, light weight, thermal shock resistance, and high temperature resistance.

[0060] The second-stage super-adiabatic combustion reaction disk has a cylinder with a relatively high specific surface area. The diameter of the cylinder is in the range of 100-800mm and the height is in the range of 20mm-200mm. The relatively high specific surface area can be provided by the porosity of the porous medium or by the material being machined to form a structure penetrating the upper and lower surfaces. The cylinder can be machined to form a through hole, a tapered hole or a stepped hole in the axial direction.

[0061] The first-stage superadiabatic combustion reaction disk 4 is a hollow rotating body with a certain pore structure at the upper part, which can guide the internal fluid to the outside of the cylinder according to a specific rule. There is a certain taper at the upper part of the first-stage superadiabatic combustion reaction disk 4, which has a Venturi tube structure, which can increase the outlet pressure and avoid flashback of the premixed burner.

[0062] The first-stage superadiabatic combustion reaction disk 4 and the second-stage superadiabatic combustion reaction disk 1 can both absorb heat quickly and heat the surrounding gas through radiation.

[0063] The main fuel, ignition rod fuel and oxide of this burner are all regulated by the regulation execution module 12 and the control module 13 to adjust the pressure and flow of the fuel.

[0064] The burner can increase the thermal efficiency of the burner to more than 99% and effectively reduce the energy overflowed from the flue gas through the regulating effect of the first-stage super-adiabatic combustion reaction disk 4 and the second-stage super-adiabatic combustion reaction disk 1 on combustion, and has the characteristics of high efficiency and energy saving.

[0065] The COe content of the flue gas at the burner outlet can be significantly reduced to 0-5ppm, and the NOx content can be significantly reduced to 0-10ppm, making the emissions cleaner.

[0066] In the present application, superadiabatic combustion refers to the use of enhanced radiation or heat storage methods during the combustion process to maximize the use of heat for heating materials and for heating the fuel and oxidant upstream of the reaction area, thereby reducing the heat in the flue gas and enhancing the combustion reaction.

[0067] COe refers to CO and unburned combustibles, such as CH4, H2 and other components. This indicator is one of the conditions for evaluating complete combustion.

[0068] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A super-insulated pure oxygen burner, comprising a burner shell (7) penetrating through and fixedly connected to a furnace wall (6), wherein the outer peripheral wall of the burner shell (7) located on the upper side of the furnace wall (6) is wrapped with a furnace refractory material (5), an ignition rod (9) and an annularly arranged fuel nozzle (10) are arranged in the burner shell (7), a control module (13) is electrically connected to an adjustment execution module (12), and the adjustment execution module (12) is respectively connected to the ignition rod (9) and the annularly arranged fuel nozzle (10) through two fuel pipes, characterized in that: A first-stage super-adiabatic combustion reaction disk (4) is fixed to the inner wall of the upper end of the burner shell (7), and a premixing swirl plate (8) is arranged inside the first-stage super-adiabatic combustion reaction disk (4); a second-stage super-adiabatic combustion reaction disk (1) is arranged above the first-stage super-adiabatic combustion reaction disk (4), and the second-stage super-adiabatic combustion reaction disk (1) is fixedly connected to the furnace wall (6) via a plurality of adjustable refractory support rods (3); and an oxygen inlet (11) is arranged at the lower end of the side wall of the burner shell (7).

2. The super-insulation pure oxygen burner according to claim 1, characterized in that: A plurality of the adjustable refractory support rods (3) are arranged at equal intervals along a circumferential direction, the upper ends of the adjustable refractory support rods (3) are fixedly connected to the second-stage super-adiabatic combustion reaction disk (1) via connecting screws (2), and the lower ends of the adjustable refractory support rods (3) are fixedly connected to the furnace wall (6) via fixing nuts.

3. The super-insulation pure oxygen burner according to claim 1, characterized in that: The first-stage super-adiabatic combustion reaction disk (4) and the second-stage super-adiabatic combustion reaction disk (1) are porous ceramics or entities with a porous structure.

4. The super-insulation pure oxygen burner according to claim 3, characterized in that: The first-stage superadiabatic combustion reaction disk (4) is a hollow rotating body, and has a pore structure at its upper portion, which can guide the internal fluid to the outside of the cylinder. The first-stage superadiabatic combustion reaction disk (4) has a taper at its upper portion, and has a Venturi tube structure.

5. The super-insulation pure oxygen burner according to claim 3, characterized in that: The second-stage superadiabatic combustion reaction disk (1) is a cylinder having a diameter in the range of 100-800 mm and a height in the range of 20 mm-200 mm.

6. The super-insulation pure oxygen burner according to claim 5, characterized in that: When the second-stage superadiabatic combustion reaction disk (1) is a solid structure, its cross-sectional structure is one of a straight hole structure, a tapered hole structure, a Venturi hole structure, and a stepped through hole structure.

7. The super-insulation pure oxygen burner according to claim 5, characterized in that: When the second-stage super-adiabatic combustion reaction disk (1) is a porous ceramic, its structure is one of a high-alumina ceramic ball structure and a silicon carbide porous ceramic structure.

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