Pulverized coal temperature nuclear fusion composite glow flame burner

Abstract

The invention provides a pulverized coal temperature nuclear fusion composite glow flame burner, and relates to the field of cement production. The burner comprises: a metal elbow; the thermonuclear fusion excitation assembly comprises a metal shell, a metal electrode, an insulating connecting piece and an electrode tip; an opening is formed in the portion, located in the metal bent pipe, of the metal shell. The metal electrode is arranged in the metal shell and is connected with the metal shell through the insulating connecting piece; the metal shell is provided with a conveying pipe communicated with an inner cavity of the metal shell, a conveying channel is arranged in the metal electrode, one end of the conveying channel penetrates through the outer side wall of the first end of the metal electrode to form an air outlet, the electrode tip is arranged at the air outlet, and the electrode tip is provided with a flow guide through hole communicated with the conveying channel. The conveying channel communicates with an air supply valve set. By actively constructing the plasma field, the combustion stability in the starting stage, the low-load working condition or the kiln condition fluctuation can be remarkably improved, meanwhile, nuclear energy gain is fully utilized to achieve energy conservation and consumption reduction, and the problems of insufficient combustion and flameout are effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cement production, in particular to a coal powder thermonuclear fusion composite acetylene burner for a cement production decomposing furnace. BACKGROUND

[0002] In cement production, the formation of cement clinker needs to go through six stages: 100-150℃, the free water in the kiln raw material evaporates; 450℃, the kaolinite in clay dehydrates and releases crystal water; 600℃, the decomposition of magnesium carbonate begins (750℃, the maximum rate is reached), 800℃, the decomposition of calcium carbonate begins (900℃, the maximum rate is reached); 800-1300℃, solid phase reactions occur in turn to form CA, CF, C2S, C3A, C4AF; 1300-1450℃ and cooling to 1300℃, C2S reacts with the remaining CaO to form the key C3S; below 1300℃, the cooling process begins, which needs to be cooled quickly to prevent C2S from converting into non-hydrated γ-C2S. In production, the specific surface area of raw materials is increased by grinding to enhance high-temperature reaction efficiency, and the specific surface area of clinker is increased by grinding to speed up the hydration reaction, and the core energy-consuming equipment of the whole process is the decomposing furnace (coal powder acetylene combustion) and the rotary kiln (coal powder clear flame combustion), the coal ratio of which is 60:40, and the heat is provided by high-calorific-value anthracite coal powder combustion.

[0003] In the traditional process, the decomposing furnace is connected with the preheater and the rotary kiln, and the decomposing furnace mainly relies on the high-temperature flue gas (usually 800-1000℃) discharged from the kiln tail of the rotary kiln and the preheated raw material to bring in heat, so as to maintain an 800-900℃ high-temperature environment in the furnace to realize coal powder spontaneous combustion - this temperature is much higher than the ignition point of coal powder (400-500℃).

[0004] However, this combustion mode which relies on the temperature of the flue gas at the kiln tail and the heat brought in by the raw material is unstable and easily affected by fluctuations: during start-up, low load or kiln condition fluctuations, coal powder combustion is prone to be poor or even extinguished. SUMMARY

[0005] The present application relates to the technical field of cement production, in particular to a coal powder thermonuclear fusion composite acetylene burner for a cement production decomposing furnace.

[0006] The embodiments of the present application are implemented as follows:

[0007] The embodiment of the present application provides a coal powder warm nuclear fusion composite flame burner, which comprises a metal elbow pipe, a warm nuclear fusion excitation assembly, the warm nuclear fusion excitation assembly comprises a metal shell, a metal electrode, an insulating connecting piece and an electrode head, the metal shell has a first end located in the metal elbow pipe and a second end located outside the metal elbow pipe, and the metal shell part located in the metal elbow pipe is provided with an opening, the metal electrode is arranged in the metal shell and is connected with the metal shell in an insulating mode through the insulating connecting piece, the metal electrode has a first end close to the opening and a second end used for electrically connecting a power supply, the metal shell is provided with a conveying pipe communicating with the inner cavity of the metal shell, the metal electrode is provided with a conveying channel, one end of the conveying channel penetrates the outer side wall of the first end of the metal electrode to form an air outlet, the electrode head is arranged at the air outlet, the electrode head is provided with a flow guide through hole, and the flow guide through hole communicates with the conveying channel, and one end of the conveying channel far away from the electrode head is communicated with a gas supply valve group.

[0008] Further, based on the foregoing scheme, the metal elbow pipe comprises a first straight pipe part connected with a decomposition furnace, and further comprises a second straight pipe part used for inputting wind and coal powder.

[0009] The metal shell comprises a first annular steel cylinder, one end of the first annular steel cylinder extends into the first straight pipe part and is arranged along the axis direction of the first straight pipe part, the other end penetrates to the outside of the metal elbow pipe, a second annular steel cylinder is butted at the port part of the first annular steel cylinder outside the metal elbow pipe, a protective cover is sealingly matched with the port of the second annular steel cylinder far away from the first annular steel cylinder, and the port of the first annular steel cylinder far away from the second annular steel cylinder is the opening, and the metal electrode is located in the cavity formed by the first annular steel cylinder, the second annular steel cylinder and the protective cover.

[0010] Further, based on the foregoing scheme, the outer side wall of the metal elbow pipe is provided with a straight pipe communicating with the inner cavity of the metal elbow pipe, and the straight pipe is used for inserting the first annular steel cylinder.

[0011] The second annular steel cylinder and the straight pipe are detachably connected through a flange structure.

[0012] Further, based on the foregoing scheme, the outside of the first annular steel cylinder is provided with a ceramic protection pipe.

[0013] Further, based on the foregoing scheme, the insulating connecting piece comprises an insulating seat arranged at one end of the metal electrode far away from the electrode head and an insulating protective sleeve pipe sleeved on the outer periphery of the metal electrode between the insulating seat and the electrode head.

[0014] Further, based on the preceding scheme, the insulating seat is provided with a mounting through hole for mounting the metal electrode, a visible through hole is provided on the outside of the mounting through hole of the insulating seat, and a transparent plugging piece is arranged in the visible through hole; wherein the protective cover is provided with an observation window, and the observation window is arranged opposite to the transparent plugging piece.

[0015] Further, based on the preceding scheme, the metal electrode is rotatably sleeved with a cyclone vane, and the cyclone vane is located between the communication position of the conveying pipe and the metal shell and the electrode head.

[0016] Further, based on the preceding scheme, the inner side wall of the first annular steel cylinder is provided with a stainless heat-resistant steel pipe section, and the electrode head is located in the interior of the stainless heat-resistant steel pipe section.

[0017] Further, based on the preceding scheme, the interior of the metal elbow pipe is provided with a ceramic lining pipe.

[0018] Further, based on the preceding scheme, the metal shell is provided with a pressure detection head for detecting the air pressure in the interior of the metal shell.

[0019] Compared with the prior art, the embodiments of the present application have at least the following advantages or beneficial effects:

[0020] The present application breaks through the dependence of traditional process on kiln tail gas temperature and heat brought by raw material, and guarantees the combustion condition by actively constructing plasma field, greatly improves the combustion stability during startup, low load or kiln condition fluctuation, effectively avoids the problems of poor combustion and flameout; at the same time, the composite release of nuclear energy and chemical energy significantly improves the energy utilization efficiency, and can realize the effect of energy saving and coal saving. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 isometric view of a coal powder warm nuclear fusion composite torch burner according to an embodiment of the present application;

[0023] Figure 2 isometric view of a coal powder warm nuclear fusion composite torch burner according to an embodiment of the present application;

[0024] Figure 3 isometric view of a coal powder warm nuclear fusion composite torch burner according to an embodiment of the present application;

[0025] Figure 4 is Figure 3 a partial enlarged view of the middle A;

[0026] Figure 5 is Figure 3 a partial enlarged view of the middle B;

[0027] Figure 6 is a structural schematic view of the protective cover of the embodiment of the application;

[0028] Figure 7 is an axonometric view of the insulating seat of the embodiment of the application; Figure 1 ;

[0029] Figure 8 is an axonometric view of the insulating seat of the embodiment of the application; Figure 2 ;

[0030] Figure 9 is an axonometric view of the electrode head of the embodiment of the application.

[0031] Figure: 1-metal elbow, 2-ceramic inner lining pipe, 3-straight pipe, 4-metal shell, 401-first annular steel cylinder, 402-second annular steel cylinder, 403-protective cover, 5-gas supply valve group, 6-conveying pipe, 7-flange structure, 8-electrode head, 9-stainless heat-resistant steel pipe section, 10-flow guiding through hole, 11-metal electrode, 12-conveying channel, 13-cyclone blade, 14-insulating protective sleeve, 15-insulating seat, 16-pressure detection head, 17-observation window, 18-visible through hole, 19-transparent plugging piece, 20-ceramic protective pipe. DETAILED DESCRIPTION

[0032] The embodiments of the application will be described in detail below with reference to the accompanying drawings.

[0033] Embodiment

[0034] Please refer to Figures 1-9The embodiment of the present application provides a pulverized coal warm nuclear fusion composite flame burner, which comprises a metal elbow pipe 1 (which can be made of steel material); a warm nuclear fusion excitation assembly, which comprises a metal shell 4, a metal electrode 11, an insulating connecting piece and an electrode head 8; the metal shell 4 has a first end located in the metal elbow pipe 1 and a second end located outside the metal elbow pipe 1, and the part of the metal shell 4 located in the metal elbow pipe 1 is provided with an opening; the metal electrode 11 is arranged in the metal shell 4 and is connected with the metal shell 4 in an insulating mode through the insulating connecting piece, the metal electrode 11 has a first end close to the opening and a second end for electrically connecting a power supply; the metal shell 4 is provided with a conveying pipe 6 communicating with the inner cavity of the metal shell 4, the metal electrode 11 is provided with a conveying channel 12, one end of the conveying channel 12 penetrates the outer side wall of the first end of the metal electrode 11 to form an air outlet, the electrode head 8 is arranged at the air outlet, the electrode head 8 is provided with a flow guide through hole 10, and the flow guide through hole 10 communicates with the conveying channel 12; one end of the conveying channel 12 away from the electrode head 8 is communicated with a gas supply valve group 5.

[0035] The working principle of the pulverized coal warm nuclear fusion composite flame burner is as follows: the metal electrode 11 is connected with a warm nuclear fusion excitation power supply with a steep drop characteristic of 1 kHz-50 kHz and 5 kV-50 kV, the two ends of the metal elbow pipe 1 are connected with a decomposition furnace and a wind pulverized coal source respectively, the gas supply valve group 5 is connected with air, water vapor, hydrogen or ammonia and other organic gases, and the conveying pipe 6 is connected with combustion-supporting air; the air in the conveying pipe 6 first makes the wind pulverized coal present in the decomposition furnace in a flame combustion mode to release chemical energy, meanwhile, the cooperation of the electrode head 8 and the metal shell 4 forms a gradually gradient divergent high-frequency alternating plasma field (from the electrode head 8 to the decomposition furnace), which excites the hydrogen isotope deuterium-tritium in the pulverized coal, air and water vapor medium to have a fusion reaction to release nuclear energy, and finally realizes the composite combustion of nuclear energy and chemical energy. The significant advantages are as follows: the dependence on the kiln tail flue gas temperature and the heat brought in by raw materials in the traditional process is broken, the plasma field is actively constructed to ensure the combustion condition, the combustion stability during startup, low load or kiln condition fluctuation is greatly improved, and the problems of poor combustion and flameout are effectively avoided; meanwhile, the composite release of nuclear energy and chemical energy significantly improves the energy utilization efficiency, and the energy-increasing and coal-saving effect can be realized.

[0036] Optionally, the wind pulverized coal concentration in the metal elbow pipe 1 is 0.8-8 kg (pulverized coal) / kg (air) (that is, 0.8 kg-8 kg of pulverized coal is suspended and conveyed per kg of air), the pulverized coal input amount is 2-10 tons / hour, and the air input amount of the conveying pipe 6 is 10-60 cubic meters / hour. The pulverized coal in the decomposition furnace nozzle connected with the metal elbow pipe 1 can be excited to have a deuterium-tritium fusion reaction to release nuclear energy in the plasma field. Then the wind pulverized coal enters the decomposition furnace to have flame combustion.

[0037] The one end of the flow guide through hole 10 communicates with the conveying channel 12, and the other end penetrates through the side of the electrode head 8 away from the metal electrode 11. The number of the flow guide through holes 10 is multiple, and they are uniformly arranged along the circumferential direction of the electrode head 8. The outer ring surface of the electrode head 8 is partially protruded to form multiple discharge parts, and the multiple discharge parts are uniformly distributed along the circumferential direction of the electrode head 8. The side of the electrode head 8 away from the metal electrode 11 is uniformly arranged with multiple flow guide through holes 10 along the circumference, which can make the medium gas (air, water vapor, etc.) in the conveying channel 12 uniformly sprayed along the circumference and fully mixed with the flowing wind coal; at the same time, the multiple discharge parts of the outer ring surface of the electrode head 8 are uniformly distributed along the circumference, the local electric field strength is strengthened by the discharge effect of the sharp end of the protruding structure, the mixed medium is more easily ionized, and a uniform and wide coverage high-frequency alternating plasma field is formed between the electrode head 8 and the ground electrode, thereby efficiently exciting the synergistic reaction of hydrogen isotope warm nuclear fusion and coal flame combustion. The advantage is that the uniform arrangement of the flow guide through hole 10 ensures the uniformity of the mixing of the medium gas and the wind coal, avoiding local reaction imbalance; the uniform distribution of the discharge parts along the circumference enhances the consistency of the electric field strength, improves the stability and coverage efficiency of the plasma field, promotes the full release of nuclear energy and chemical energy, optimizes the energy distribution of the electrode head 8, prolongs its service life, and further ensures the efficient and stable operation of the combustion system.

[0038] It is worth noting that the chemical energy and nuclear energy combined combustion technology, as an extremely innovative energy utilization technology, ingeniously combines the processes of traditional chemical fuel combustion releasing chemical energy and nuclear reaction releasing nuclear energy, striving to create a more efficient, cleaner and more stable energy supply mode. In this technology system, the high-frequency high-voltage electric field provides the energy to initialize the chemical fuel combustion ignition, and also creates a specific reaction environment, so that the high-energy particles deuterium-tritium in the fuel release nuclear energy at the same time as chemical energy. At the same time, the energy released by nuclear energy can further improve the combustion efficiency of chemical fuel, thereby effectively reducing the consumption of chemical fuel and the emission of pollutants. Through the combined use of chemical energy and nuclear energy, the inherent limitations of single energy utilization are successfully broken through. The chemical energy and nuclear energy combined combustion technology belongs to the public knowledge, which has been disclosed in the book "Controllable Temperature Nuclear Fusion Photocuclear Reaction Combined Combustion Theory and Practice" ISBN 978-7-5646-5429-0. The book was co-written by Ding Enzhen, Liu Angang, etc. and published by China University of Mining and Technology Press in June 2022.

[0039] As a relatively preferred embodiment, the metal elbow pipe 1 includes a first straight pipe part connected to the decomposition furnace, and a second straight pipe part for inputting wind coal;

[0040] The metal shell 4 comprises: a first annular steel cylinder 401, which extends into the first straight pipe section and is arranged along the axis of the first straight pipe section, and the other end penetrates to the outside of the metal elbow 1; a second annular steel cylinder 402, which is connected to the port of the first annular steel cylinder 401 outside the metal elbow 1; a protective cover 403, which is sealingly matched with the port of the second annular steel cylinder 402 away from the first annular steel cylinder 401; the port of the first annular steel cylinder 401 away from the second annular steel cylinder 402 is the opening, and the metal electrode 11 is located inside the cavity surrounded by the first annular steel cylinder 401, the second annular steel cylinder 402 and the protective cover 403.

[0041] In the above embodiment, the second straight pipe section of the metal elbow 1 inputs the wind coal powder, and the first straight pipe section is connected to the decomposition furnace, and the wind coal powder flows to the decomposition furnace along the axis of the first straight pipe section; the metal electrode 11 is connected to a warm nuclear fusion excitation power supply with a steep drop characteristic of 1 kHz-50 kHz and 5 kV-50 kV, and forms a high-frequency high-voltage electric field with the first annular steel cylinder 401 (as a grounding electrode) extending into the first straight pipe section, and the opening of the first annular steel cylinder 401 faces the wind coal powder flow path, and cooperates with the sealing cavity surrounded by the second annular steel cylinder 402 and the protective cover 403 to ionize the medium gas (air, water vapor, etc.) in the electric field, forming a divergent high-frequency alternating plasma field extending along the axis of the first straight pipe section; when the wind coal powder flows through the field, the hydrogen isotopes in the wind coal powder are adsorbed due to static electricity, and the hydrogen isotopes are excited by the electric field to release nuclear energy, and the coal powder releases chemical energy in the flame combustion, realizing composite combustion. The advantages are: the first annular steel cylinder 401 is arranged along the axis of the first straight pipe section, which ensures that the plasma field is accurately matched with the flow direction of the wind coal powder, and improves the energy conversion efficiency; the segmented design of the metal shell 4 facilitates installation and maintenance, and the sealing cooperation of the protective cover 403 can effectively protect the internal components from being worn by the coal powder; the opening directly acts on the wind coal powder entering the decomposition furnace, which strengthens the synergistic release effect of nuclear energy and chemical energy, further enhances the combustion stability, and helps to achieve the goal of increasing energy and saving coal.

[0042] As a more preferred embodiment, the outer side wall of the metal elbow 1 is provided with a straight pipe 3 communicating with the inner cavity thereof, and the first annular steel cylinder 401 is inserted into the straight pipe 3.

[0043] The second annular steel cylinder 402 and the straight pipe 3 are detachably connected through a flange structure 7.

[0044] In the above embodiment, the straight pipe 3 of the outer side wall of the metal elbow pipe 1 communicates with the inner cavity thereof, and the first annular steel cylinder 401 is inserted into the straight pipe 3, so that the opening of the first annular steel cylinder 401 is accurately located in the wind-pulverized coal flow path in the inner cavity of the metal elbow pipe 1; the second annular steel cylinder 402 is detachably connected with the straight pipe 3 through the flange structure 7, which not only fixes the position of the first annular steel cylinder 401, but also forms a sealed space to ensure the stable generation of the high-frequency high-voltage electric field between the metal electrode 11 and the first annular steel cylinder 401. The advantages are that the detachable connection of the flange facilitates the installation, maintenance and replacement of the first annular steel cylinder 401, the metal electrode 11 and other components, which is suitable for the on-site reforming needs of the decomposition furnace; the straight pipe 3 provides stable support for the first annular steel cylinder 401, ensures the accurate action of the opening and the wind-pulverized coal flow, enhances the contact efficiency of the plasma field and the wind-pulverized coal, improves the synergistic release effect of nuclear energy and chemical energy, further ensures the stability of combustion, and helps to increase energy and save coal.

[0045] As a preferred embodiment, the first annular steel cylinder 401 is externally sleeved with a ceramic protective pipe.

[0046] In the above embodiment, the ceramic material has excellent wear resistance and high temperature resistance, which can effectively resist the erosion and wear in the wind-pulverized coal conveying process and the high temperature environment in the decomposition furnace, protect the first annular steel cylinder 401 from damage and prolong its service life; at the same time, the insulation property of the ceramic can reduce the energy loss of the electric field, ensure the stable formation of the high-frequency high-voltage electric field between the first annular steel cylinder 401 as the grounding electrode and the metal electrode 11, and ensure the continuous and effective plasma field.

[0047] As a preferred embodiment, the insulating connecting piece includes: an insulating seat 15 arranged at one end of the metal electrode 11 away from the electrode head 8; and an insulating protective sleeve 14 sleeved on the outer periphery of the metal electrode 11 between the insulating seat 15 and the electrode head 8.

[0048] In the above embodiment, the insulating seat 15 is arranged at one end of the metal electrode 11 away from the electrode head 8, and the insulating protective sleeve 14 is sleeved on the outer periphery of the metal electrode 11 between the insulating seat 15 and the electrode head 8, and through the cooperative action of the two, the reliable insulation of the metal electrode 11 and the metal shell 4 is realized, and the leakage or short circuit of the high-frequency high-voltage current is avoided. The advantages are that the area that may be contacted by the metal electrode 11 and the shell is completely covered, the insulation performance between the electrode and the shell is stable, a reliable guarantee is provided for the generation of the high-frequency high-voltage electric field; at the same time, the insulating material can protect the metal electrode 11 from corrosion and wear by the medium gas and the coal powder, and improve the overall stability and service life of the equipment.

[0049] As a preferred embodiment, the insulating seat 15 is provided with a mounting through hole for mounting the metal electrode 11, and the insulating seat 15 outside the mounting through hole is provided with a visible through hole 18, and the visible through hole 18 is provided with a transparent plugging piece 19; wherein the protective cover 403 is provided with an observation window 17, and the observation window 17 is arranged opposite to the transparent plugging piece 19.

[0050] In the above embodiment, through the opposite arrangement of the visible through hole 18 (provided with a transparent plugging piece 19) on the insulating seat 15 and the observation window 17 of the protective cover 403, a visual channel is formed, which can directly observe the inside without disassembling the equipment, and the state (such as form, stability, etc.) of the high-frequency alternating plasma field near the metal electrode 11 and the electrode head 8 can be monitored in real time, which provides an intuitive basis for timely judging whether the combustion reaction is normal; at the same time, the transparent plugging piece 19 can not only ensure the observation clarity, but also effectively seal the through hole to prevent the leakage of internal medium gas (air, water vapor, etc.) and the invasion of external coal powder and dust, thereby ensuring the sealing of the insulating seat 15 and the cleanliness of the internal components, and maintaining the stability of the insulation performance; in addition, this design simplifies the monitoring process of the combustion core area, reduces the number of shutdown inspections, improves the continuity of equipment operation and maintenance efficiency, and helps to optimize the operation parameters through real-time observation, thereby further ensuring the efficiency and stability of the composite combustion.

[0051] As a preferred embodiment, the metal electrode 11 is rotatably sleeved with a cyclone vane 13, and the cyclone vane 13 is located between the communication position of the conveying pipe 6 and the metal shell 4 and the electrode head 8.

[0052] In the above embodiment, the cyclone vane 13 on the metal electrode 11 is located between the communication position of the conveying pipe 6 (which introduces the combustion-supporting air) and the metal shell 4 and the electrode head 8, when the combustion-supporting air sent by the conveying pipe 6, the wind coal powder in the metal shell 4 and other medium (such as organic gas) flow through this position, the cyclone vane 13 rotates under the push of the medium, so that the mixed medium forms a strong cyclone, and the components are mixed and then flow to the electrode head 8 and the plasma field area.

[0053] The advantages are that: the cyclone effect significantly improves the mixing uniformity of the combustion-supporting air, the wind coal powder and the medium gas, avoids the influence of local concentration imbalance on the combustion efficiency; at the same time, the cyclone prolongs the residence time of the mixed medium in the plasma field, increases the contact area and action strength with the high-frequency alternating plasma field, more efficiently excites the hydrogen isotope warm nuclear fusion and the coal powder flame combustion, and strengthens the coordinated release of nuclear energy and chemical energy; in addition, the cyclone can reduce the deposition and blockage of coal powder in the pipeline, and the rotatable characteristic of the vane adapts to different medium flow, enhances the adaptability to working condition fluctuations, and further ensures the stability of the combustion and the energy-increasing and coal-saving effect.

[0054] As a preferred embodiment, the inner side wall of the first annular steel cylinder 401 is provided with a stainless heat-resistant steel pipe section 9, and the electrode head 8 is located inside the stainless heat-resistant steel pipe section 9.

[0055] In the above embodiment, the stainless heat-resistant steel pipe section 9 itself has excellent electrical conductivity, high-temperature resistance and corrosion resistance, is suitable for the harsh environment of high temperature (800-900℃) in the decomposition furnace and coal powder scouring and combustion corrosion, can long-term and stably bear the grounding function, and avoids the attenuation of the electrical conductivity of the traditional grounding electrode due to high-temperature oxidation or wear.

[0056] As a preferred embodiment, the metal elbow pipe 1 is internally provided with a ceramic lining pipe 2.

[0057] In the above embodiment, the metal elbow pipe 1 is internally provided with the ceramic lining pipe 2, which can resist wind and coal powder scouring by virtue of the excellent wear resistance of the ceramic, protect the metal elbow pipe 1 and prolong the service life thereof.

[0058] As a preferred embodiment, the metal shell 4 is provided with a pressure detection head 16 for detecting the air pressure inside the metal shell 4.

[0059] In the above embodiment, the metal shell 4 is provided with the pressure detection head 16, which can monitor the internal air pressure in real time, facilitate the timely discovery of abnormalities to ensure the safe operation of the equipment and the stable conveying of the medium.

[0060] In addition, unless otherwise specified or limited, in the embodiments of the present application, if the terms “mounting”, “connecting” appear, they should be understood in a broad sense. For example, “connecting” can be detachable connection or non-detachable connection; can be direct connection or indirect connection through an intermediate medium. If the terms “upper”, “lower”, “left”, “right”, “inner”, “outer”, “side” and other directional terms appear, they are only the direction of the drawing or the direction in which the product is usually placed, and are only for the purpose of clearly describing the present application, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as a limitation on the present application. The terms “first”, “second” and the like are only used for distinction and cannot be understood as indicating or implying relative importance; “a plurality of” means at least two. In the embodiments of the present application, the relative positional relationship limitations such as parallel, perpendicular, aligned and the like are relative to the current process level, and are not strictly limited, and a small amount of deviation is allowed, such as approximately parallel, approximately perpendicular, approximately aligned and the like. For example, A is parallel to B, which means that A and B are parallel or approximately parallel, and the included angle between A and B can be between 0 degrees and 10 degrees.

[0061] The above are only some of the embodiments and implementation methods of the present application. The scope of protection of the present application is not limited to these. In the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Any combination of features in different embodiments is also within the scope of protection of the present application. Any changes or replacements that can be easily thought of by any technician familiar with the field within the technical scope disclosed in the present application should be covered by the scope of protection of the present application.

Claims

1. A pulverized coal thermonuclear fusion composite glow flame burner, characterized in that: include: Metal elbow (1); A warm nuclear fusion excitation assembly comprising a metal shell (4), a metal electrode (11), an insulating connector and an electrode head (8); The metal shell (4) has a first end located inside the metal elbow (1) and a second end located outside the metal elbow (1), and the portion of the metal shell (4) located inside the metal elbow (1) is provided with an opening; The metal electrode (11) is arranged inside the metal shell (4) and is insulated and connected to the metal shell (4) through the insulating connector, and the metal electrode (11) has a first end close to the opening and a second end for electrically connecting to a power source; The metal shell (4) is provided with a delivery pipe (6) communicating with its inner cavity, the metal electrode (11) is provided with a delivery channel (12), and one end of the delivery channel (12) penetrates the outer wall of the first end of the metal electrode (11) to form an air outlet, the electrode head (8) is arranged at the air outlet, and the electrode head (8) is provided with a guide hole (10), and the guide hole (10) is connected to the delivery channel (12); One end of the delivery channel (12) away from the electrode head (8) is connected to a gas supply valve group (5).

2. A pulverized coal thermonuclear fusion composite glow flame burner according to claim 1, characterized in that: The metal elbow (1) comprises a first straight pipe portion connected to the decomposition furnace, and also comprises a second straight pipe portion for inputting air and pulverized coal; Wherein, the metal shell (4) comprises: A first annular steel cylinder (401), one end of which extends into the first straight pipe portion and is arranged along the axial direction of the first straight pipe portion, and the other end of which penetrates the outside of the metal elbow (1); a second annular steel cylinder (402) butted against the end portion of the first annular steel cylinder (401) outside the metal elbow (1); a protective cover (403) which is in sealing engagement with a port of the second annular steel cylinder (402) away from the first annular steel cylinder (401); The port of the first annular steel cylinder (401) away from the second annular steel cylinder (402) is the opening, and the metal electrode (11) is located inside a cavity surrounded by the first annular steel cylinder (401), the second annular steel cylinder (402) and the protective cover (403).

3. The pulverized coal thermonuclear fusion composite glow flame burner according to claim 2, characterized in that: The outer wall of the metal curved pipe (1) is provided with a straight pipe (3) communicating with its inner cavity, and the straight pipe (3) is used for inserting the first annular steel cylinder (401); The second annular steel cylinder (402) is detachably connected to the straight pipe (3) via a flange structure (7).

4. The pulverized coal thermonuclear fusion composite glow flame burner according to claim 2, characterized in that: The first annular steel cylinder (401) is sheathed with a ceramic protection tube (20).

5. The pulverized coal thermonuclear fusion composite glow flame burner according to claim 2, characterized in that: The insulating connector comprises: an insulating seat (15) disposed at an end of the metal electrode (11) away from the electrode head (8); An insulating protective sleeve (14) is sleeved on the outer periphery of the metal electrode (11) between the insulating seat (15) and the electrode head (8).

6. The pulverized coal thermonuclear fusion composite glow flame burner according to claim 5, characterized in that: The insulating seat (15) is provided with a mounting through hole for mounting the metal electrode (11); a visible through hole (18) is provided on the insulating seat (15) outside the mounting through hole; and a transparent blocking member (19) is provided in the visible through hole (18); The protective cover (403) is provided with an observation window (17), and the observation window (17) is arranged opposite to the transparent blocking member (19).

7. The pulverized coal thermonuclear fusion composite glow flame burner according to claim 1, characterized in that: The metal electrode (11) is rotatably covered with a swirl blade (13), and the swirl blade (13) is located between the connection point between the delivery pipe (6) and the metal shell (4) and the electrode head (8).

8. The pulverized coal thermonuclear fusion composite glow flame burner according to claim 2, characterized in that: The inner side wall of the first annular steel cylinder (401) is provided with a stainless heat-resistant steel pipe section (9), and the electrode head (8) is located inside the stainless heat-resistant steel pipe section (9).

9. The pulverized coal thermonuclear fusion composite glow flame burner according to claim 1, characterized in that: A ceramic lining tube (2) is provided inside the metal elbow (1).

10. The pulverized coal thermonuclear fusion composite glow flame burner according to claim 1, characterized in that: The metal shell (4) is provided with a pressure detection head (16) for detecting the air pressure inside the metal shell (4).

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