Integrated multi-feed waste liquid process burner

Abstract

An integrated multi-raw material waste liquid process burner, one end of the burner body is provided with a burner head, the other end is provided with a sealing box, the ignition gun penetrates through the sealing box and extends into the inside of the burner body, and a mounting flange is arranged on the burner body; the utility model integrates the functions of ignition, preheating and process burner, directly carries out ignition heating and pressure rising by using the integrated burner in the start-up stage of the gasification furnace, and does not need to replace the burner; the organic waste liquid channel is arranged between the outer ring oxygen channel and the coal water slurry channel, so that the pre-mixed coal water slurry and the outer ring oxygen can effectively atomize and burn the organic waste liquid, the stratification and agglomeration phenomena in the mixing process of the coal water slurry and the organic waste liquid are avoided, the quality of the mixed coal water slurry is unstable, when the organic waste liquid is not needed to be treated, the organic waste liquid channel can be protected by carbon dioxide or nitrogen protection gas, and any influence on the overall operation of the burner is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal chemical combustion equipment, specifically relating to an integrated multi-raw material waste liquid process burner. Background Technology

[0002] In today's coal chemical industry system, coal gasification technology is a core pillar and a key link in achieving the clean and efficient conversion and utilization of coal. Among these, pressurized fluidized bed gasification processes using coal-water slurry as feedstock, such as the Texaco process, the Jinhua furnace process, and the Huali four-nozzle process, have demonstrated numerous significant advantages. In terms of production capacity, a single gasifier can process up to 2,000-3,000 tons of coal per day, possessing strong production intensity and effectively supporting large-scale industrial production needs. Regarding reaction efficiency, its carbon conversion rate is outstanding, exceeding 98%, greatly improving the utilization rate of coal resources. Simultaneously, these processes have a high degree of system integration, with close coordination among various stages, which is conducive to the stable operation and efficient management of the entire gasification process.

[0003] In the actual gasification process, the coal-water slurry is uniformly atomized and injected into the gasifier by the powerful impact of high-speed oxygen. Under high-temperature conditions (1300-1500℃), the coal-water slurry undergoes a vigorous gasification reaction with oxygen, ultimately producing syngas, primarily composed of carbon monoxide (CO) and hydrogen (H2). This syngas, as an important chemical feedstock, is widely used in the production of numerous chemical products such as ammonia, methanol, and dimethyl ether, playing an irreplaceable role in the modern coal chemical industry.

[0004] Although the aforementioned coal-water slurry gasification process has achieved certain successes and realized large-scale industrial application, with increasingly stringent environmental protection requirements and the continuous pursuit of energy efficiency, the current traditional coal-water slurry gasification process has exposed obvious technical bottlenecks in several key aspects, which urgently need to be addressed.

[0005] I. Challenges in Organic Waste Liquid Treatment

[0006] In the daily production processes of industries such as chemical, pharmaceutical, and printing and dyeing, an astonishing amount of high-concentration organic waste liquid is generated annually, exceeding 50 million tons. This organic waste liquid has an extremely complex composition, containing not only various organic compounds but also potentially heavy metal ions and toxic and harmful substances, making it extremely difficult to treat. Direct discharge of this waste liquid into the natural environment would undoubtedly cause severe pollution to soil, water bodies, and the atmosphere, seriously threatening ecological balance and human health. To achieve the harmless treatment of this organic waste liquid, many chemical companies have attempted to co-fire it in coal-water slurry gasification furnaces. Theoretically, the high temperature (1200-1400℃) during the gasification process can fully decompose the organic components in the waste liquid, achieving harmless treatment. However, current technologies face many insurmountable problems in practical operation. Firstly, it is difficult to achieve uniform mixing of organic waste liquid and coal-water slurry. Due to the significant differences in their physical properties (such as density and viscosity) and chemical composition, stratification and agglomeration easily occur during mixing, leading to unstable quality of the mixed coal-water slurry. This non-uniformity further causes drastic changes in the viscosity of the coal-water slurry. The originally well-flowing coal-water slurry becomes extremely unstable after being mixed with waste liquid, severely affecting the smoothness of the transportation process. Secondly, the instability of the coal-water slurry's flowability directly causes pressure fluctuations in the gasifier. When the viscosity of the coal-water slurry changes abnormally, the flow resistance within the gasifier also changes, leading to uneven pressure distribution and pressure fluctuations. These pressure fluctuations not only affect the stability of the gasification reaction but also easily damage the gasifier equipment, especially the burner. Because the burner is in a harsh environment of high temperature, high pressure, and high-speed scouring by the coal-water slurry, pressure fluctuations cause uneven stress distribution on the burner, easily leading to burner erosion, shortening its service life, and creating serious safety hazards. Thirdly, the calorific value of the organic waste liquid fluctuates significantly. Organic waste liquids from different sources and batches have significant differences in their organic composition and content, resulting in extremely unstable calorific values. When these waste liquids with large calorific value fluctuations are mixed with the coal-water slurry, the calorific value of the mixed coal-water slurry also changes drastically. During the gasification process, the stability of the calorific value of the coal-water slurry has a crucial impact on the reaction process and the quality of the syngas. Large fluctuations in calorific value make it difficult to control the temperature of the gasification reaction, which in turn affects the stability of the effective gas (CO + H2) content, reducing the quality of the syngas and production efficiency.

[0007] II. Burner Operation and Ignition Issues

[0008] Traditional gasifiers have a complex start-up process, requiring separate preheating burners and process burners. Before ignition, the gasifier temperature must be slowly raised to over 800°C using the preheating burners, a process that consumes significant amounts of fuel and time. Once the required temperature is reached, the process burners are switched on for feeding, initiating the gasification reaction. This method has several serious drawbacks. First, during burner replacement, the gasifier's high internal temperature causes heat loss through various pathways. Research and practical experience indicate that approximately 15-20% of the heat stored in the furnace is lost during burner replacement, resulting in substantial energy waste and prolonged start-up time. Second, manually replacing burners in this high-temperature environment poses significant safety risks to operators. Due to the extremely high internal temperature and the presence of flammable gases, even slight mishaps can lead to burns, deflagration, and other serious accidents, severely threatening the lives of operators. Furthermore, the entire furnace baking process takes 6-8 hours, during which a large amount of fuel is continuously consumed, resulting in high energy consumption and low efficiency, which greatly increases production costs. Taking the Jinhua furnace as an example, the problem of low burner ignition success rate is particularly prominent. In actual production, due to the influence of various factors, such as the stability of the ignition system, the mixing ratio of gas and air, and the burner structural design, burner ignition of the Jinhua furnace often fails. This not only further prolongs the start-up time but also increases the uncertainty and risk of the production process.

[0009] In summary, the technical bottlenecks in traditional coal-water slurry gasification processes, particularly in areas such as organic waste treatment, burner operation, and ignition, severely restrict the synergistic optimization of energy efficiency and environmental benefits. Therefore, an innovative technological solution is urgently needed to overcome these bottlenecks and achieve the sustainable development of coal-water slurry gasification. Summary of the Invention

[0010] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an integrated multi-raw material waste liquid process burner that is reasonably designed, integrates ignition preheating and process burner, and realizes dual-channel combustion of coal-water slurry and waste liquid.

[0011] The technical solution adopted to solve the above technical problems is: an integrated multi-raw material waste liquid process burner, with a burner head at one end of the burner body and a sealing box at the other end, an ignition gun extending into the burner body through the sealing box, and a large mounting flange on the burner body.

[0012] The burner body comprises: a first tee inlet end connected to the central oxygen inlet pipe; an outlet end connected to a sealing gland; and another outlet end connected to one end of the central oxygen sleeve via a first flange. The first flange is connected to a second flange fitted on the central oxygen sleeve. The second flange is connected to one outlet end of the second tee. The other outlet end of the second tee is connected to the fuel gas sleeve, and the inlet end is connected to the fuel gas inlet pipe. A third flange and a fourth flange are fitted on the fuel gas sleeve. The fourth flange is connected to one outlet end of the third tee. The other outlet end of the third tee is connected to the coal-water slurry sleeve, and the inlet end is connected to the coal-water slurry inlet pipe. A fifth flange and a sixth flange are fitted on the coal-water slurry sleeve. The sixth flange is connected to the waste liquid sleeve. Waste liquid inlet pipe is provided on the side wall. The waste liquid inlet pipe is fitted with a seventh flange and an eighth flange. The eighth flange is connected to one outlet end of the fourth tee. The other outlet end of the fourth tee is connected to the inner cooling water pipe, and the inlet end is connected to the outer epoxy inlet pipe. A cooling water outer pipe is provided around the outer circumference of the inner cooling water pipe. A cooling water ring pipe is provided between the outer cooling water pipe and the inner cooling water pipe. A cooling water inlet chamber is formed between the inner cooling water pipe and the cooling water ring pipe. The cooling water inlet pipe is connected to the cooling water inlet chamber. A cooling water outlet chamber is formed between the outer cooling water pipe and the cooling water ring pipe. The cooling water outlet pipe is connected to the cooling water outlet chamber. The ends of the central oxygen jacket, fuel gas jacket, coal-water slurry jacket, waste liquid jacket, and cooling water pipe are all connected to the burner head.

[0013] The burner head of this utility model comprises: two ends of a cooling water jacket connected to the ends of an outer cooling water pipe and an inner cooling water pipe respectively to form a closed cavity; a cooling water baffle is provided inside the cooling water jacket; one end of the cooling water baffle is connected to the end of a cooling water ring pipe; the end of a waste liquid nozzle is connected to the end of a waste liquid sleeve; an outer epoxy channel is formed between the outer wall of the waste liquid nozzle and the inner side of the outer wall of the cooling water jacket; the end of a coal-water slurry nozzle is connected to a coal-water slurry sleeve; a waste liquid channel is formed between the outer wall of the coal-water slurry nozzle and the inner wall of the waste liquid nozzle; the end of a fuel gas nozzle is connected to the end of a fuel gas sleeve; a coal-water slurry and fuel gas channel is formed between the inner wall of the coal-water slurry nozzle and the outer wall of the fuel gas nozzle; and the end of a central oxygen nozzle is connected to the end of a central oxygen sleeve; the center of the central oxygen nozzle is a central oxygen channel.

[0014] The fuel gas nozzle of this utility model is a conical structure that converges from left to right. A mounting hole is machined at the center of the cone apex of the conical structure. The central oxygen nozzle extends into the mounting hole and the ends of both are flush. A ring of gas outlet holes is evenly distributed on the side wall of the conical structure in a 360° phase.

[0015] In this invention, the center line of the air outlet is parallel to the center line of the burner body.

[0016] In this invention, several sets of waste liquid nozzle support blocks are provided at intervals between the cooling water jacket and the waste liquid nozzle, several sets of water-coal slurry nozzle support blocks are provided at intervals between the waste liquid nozzle and the water-coal slurry nozzle, and several sets of fuel gas nozzle support blocks are provided at intervals between the water-coal slurry nozzle and the fuel gas nozzle.

[0017] The water-coal slurry nozzle of this utility model has a tapered structure that converges from left to right. The angle between the inclined part of the inner wall of the water-coal slurry nozzle and the center line of the burner body is 15° to 20°. The cross-section of the waste liquid nozzle is a structure that converges at both ends and protrudes outward in the middle. The angle between the inclined part of the inner wall of the waste liquid nozzle and the center line of the burner body is 15° to 20°. The inclination of the outer wall of the water-coal slurry nozzle and the inner wall of the waste liquid nozzle are consistent. The angle between the inclined part of the outer wall of the waste liquid nozzle and the center line of the burner body is 22° to 32°. The inclination of the outer wall of the waste liquid nozzle and the inner side of the outer wall of the cooling water jacket are consistent.

[0018] The distance L3 between the end of the waste liquid nozzle and the end of the cooling water jacket in this invention is 2-8 mm, the distance L2 between the end of the coal-water slurry nozzle and the end of the waste liquid nozzle is 1-5 mm, and the end of the fuel gas nozzle is flush with the end of the central oxygen nozzle, with a distance L1 between the end of the coal-water slurry nozzle and the end of the fuel gas nozzle being 50-120 mm.

[0019] The sealing box of this utility model is as follows: the outer cover extends into the sealing box base and presses against the graphite packing material set inside the sealing box base, and the right end of the sealing box base is provided with an inner cover.

[0020] The sealing box of this utility model is as follows: the outer cover extends into the sealing box base and presses against the graphite packing inside the sealing box base, and the right end of the sealing box base extends into the inner cover and presses against the graphite packing inside the inner cover.

[0021] This invention has the following advantages over the prior art:

[0022] 1. This utility model integrates the functions of ignition, preheating and process burner. During the start-up stage of the gasifier, the integrated burner is used to directly ignite, heat up and pressurize without the need to replace the burner.

[0023] 2. The design of the central oxygen nozzle and fuel gas nozzle of this utility model forms a multi-hole swirling structure, which makes the ejected fuel gas swirling, allowing the ejected oxygen and fuel gas to mix better and improve the ignition success rate.

[0024] 3. In this invention, the coal-water slurry channel and the waste liquid channel are set up separately, so that the coal-water slurry premixed with fuel gas and the organic waste liquid enter the gasifier separately through the burner, preventing the organic waste liquid from mixing with the coal-water slurry and causing changes in the stability of the coal-water slurry. The organic waste liquid channel is set between the outer epoxy channel and the coal-water slurry channel, so that the premixed coal-water slurry and the outer epoxy can effectively atomize and burn the organic waste liquid, avoiding stratification and agglomeration during the mixing of coal-water slurry and organic waste liquid, which would lead to unstable quality of the mixed coal-water slurry. When the organic waste liquid does not need to be treated, the organic waste liquid channel can be protected by carbon dioxide or nitrogen, without affecting the overall operation of the burner.

[0025] 4. The burner head of this utility model adopts a jacketed water structure. The water-jacketed burner head can resist the harsh environment inside the gasifier, remove more heat from the burner head, and play a better role in protecting the burner. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0027] Figure 2 yes Figure 1 A-direction view.

[0028] Figure 3 yes Figure 1 A schematic diagram of the structure of the burner head 21.

[0029] Figure 4 , 5 yes Figure 1 Schematic diagrams of two structural forms of the middle sealing box 2.

[0030] Figure 6 yes Figure 1 A schematic diagram of the structure of the fuel gas nozzle 21-5.

[0031] In the diagram: 1. Ignition gun; 2. Sealing box; 3. First tee; 4. Central oxygen inlet pipe; 5. Second tee; 6. Fuel gas inlet pipe; 7. Central oxygen sleeve; 8. Third tee; 9. Coal-water slurry inlet pipe; 10. Fuel gas sleeve; 11. Coal-water slurry sleeve; 12. Waste liquid sleeve; 13. Waste liquid inlet pipe; 14. Fourth tee; 15. Outer epoxy inlet pipe; 16. Inner cooling water pipe; 17. Outer cooling water pipe; 18. Cooling water outlet pipe; 19. Mounting flange; 20. Cooling water ring pipe; 21. Burner head; 22. Cooling water inlet pipe; 23. Eighth flange; 24. Seventh flange; 2 5. Sixth flange; 26. Fifth flange; 27. Fourth flange; 28. Third flange; 29. ​​Second flange; 30. First flange; 2-1. Outer cover; 2-2. Sealing cover base; 2-3. Inner cover; 2-4. Graphite packing; 21-1. Cooling water jacket; 21-2. Cooling water baffle; 21-3. Waste liquid nozzle; 21-4. Coal-water slurry nozzle; 21-5. Fuel gas nozzle; 21-6. Central oxygen nozzle; 21-7. Coal-water slurry nozzle support block; 21-8. Waste liquid nozzle support block; 21-9. Fuel gas nozzle support block; 21-5-1. Gas outlet; 21-5-2. Mounting hole. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but the present invention is not limited to these embodiments.

[0033] Example 1

[0034] exist Figures 1-6 This utility model relates to an integrated multi-raw material waste liquid process burner, comprising a burner body and a burner head 21. Specifically, one end of the burner body is provided with the burner head 21, and the other end is provided with a sealing box 2. The ignition gun 1 extends into the burner body through the sealing box 2. A single-layer seal or a double-layer seal is selected according to the pressure of the gasifier to ensure that the high-temperature gas in the gasifier does not leak from the sealing box. The ignition gun 1 is a high-energy ignition gun, and a pneumatic propulsion mechanism is provided at the tail end. During ignition, the pneumatic propulsion mechanism pushes the ignition gun 1 forward, the high-energy igniter discharges, and fuel gas and central oxygen are introduced simultaneously for ignition. After ignition, the propulsion mechanism retracts the ignition rod into the central oxygen channel. A mounting flange 19 is provided on the burner body, through which the device is installed on the furnace wall.

[0035] Specifically, the burner body consists of: a first tee (3), a central oxygen inlet pipe (4), a second tee (5), a fuel gas inlet pipe (6), a central oxygen sleeve (7), a third tee (8), a coal-water slurry inlet pipe (9), a fuel gas sleeve (10), a coal-water slurry sleeve (11), a waste liquid sleeve (12), a waste liquid inlet pipe (13), a fourth tee (14), an outer annular oxygen inlet pipe (15), an inner cooling water pipe (16), an outer cooling water pipe (17), a cooling water outlet pipe (18), a mounting flange (19), a cooling water ring pipe (20), a cooling water inlet pipe (22), an eighth flange (23), a seventh flange (24), a sixth flange (25), a fifth flange (26), a fourth flange (27), a third flange (28), and a second flange. 29. The first flange 30 is connected as follows: the inlet end of the first tee 3 is connected to the central oxygen inlet pipe 4, one outlet end is connected to the sealing gland 2, and the other outlet end is connected to one end of the central oxygen sleeve 7 through the first flange 30. The first flange 30 is connected to the second flange 29 fitted on the central oxygen sleeve 7. The second flange 29 is connected to one outlet end of the second tee 5. The other outlet end of the second tee 5 is connected to the fuel gas sleeve 10, and the inlet end is connected to the fuel gas inlet pipe 6. The fuel gas sleeve 10 is fitted with a third flange 28 and a fourth flange 27. The fourth flange 27 is connected to one outlet end of the third tee 8. The other outlet of the third tee 8 is connected to the coal-water slurry sleeve 11, and the inlet is connected to the coal-water slurry inlet pipe 9. The coal-water slurry sleeve 11 is fitted with a fifth flange 26 and a sixth flange 25. The sixth flange 25 is connected to the waste liquid sleeve 12. A waste liquid inlet pipe 13 is provided on the side wall of the waste liquid sleeve 12. The waste liquid inlet pipe 13 is fitted with a seventh flange 24 and an eighth flange 23. The eighth flange 23 is connected to one outlet of the fourth tee 14. The other outlet of the fourth tee 14 is connected to the inner cooling water pipe 16, and the inlet is connected to the outer epoxy inlet pipe 15. The outer circumference of the inner cooling water pipe 16 is provided with cooling... A cooling water ring pipe 20 is provided between the outer water pipe 17, the inner cooling water pipe 16, and the inner cooling water pipe 16. A cooling water inlet chamber is formed between the inner cooling water pipe 16 and the cooling water ring pipe 20. The cooling water inlet pipe 22 is connected to the cooling water inlet chamber. A cooling water outlet chamber is formed between the outer cooling water pipe 17 and the cooling water ring pipe 20. The cooling water outlet pipe 18 is connected to the cooling water outlet chamber. The ends of the central oxygen jacket 7, the fuel gas jacket 10, the coal-water slurry jacket 11, the waste liquid jacket 12, and the cooling water pipe are all connected to the burner head 21. The cooling water in the cooling water pipe circulates within the burner head 21 to cool the burner head 21.

[0036] In this embodiment, the burner head is composed of a cooling water jacket 21-1, a cooling water baffle 21-2, a waste liquid nozzle 21-3, a coal-water slurry nozzle 21-4, a fuel gas nozzle 21-5, a central oxygen nozzle 21-6, a coal-water slurry nozzle support block 21-7, a waste liquid nozzle support block 21-8, and a fuel gas nozzle support block 21-9. The cooling water jacket 21-1 has a U-shaped structure, with both ends connected to the ends of the outer cooling water pipe 17 and the inner cooling water pipe 16, respectively, forming a closed cavity. A cooling water baffle 21-2 is installed inside the cooling water jacket 21-1, with one end of the baffle 21-2 connected to the cooling water ring pipe 20. The ends are connected, and the bottom of the cooling water baffle 21-2 is a certain distance from the bottom of the cooling water jacket 21-1, so that the cooling water can pass through it. The end of the waste liquid nozzle 21-3 is connected to the end of the waste liquid sleeve 12. An outer epoxy channel is formed between the outer wall of the waste liquid nozzle 21-3 and the inner side of the outer wall of the cooling water jacket 21-1. The outer epoxy oxygen inlet channel is connected to the outer epoxy oxygen inlet cavity. The size of this design value is related to the outlet flow rate and the flow field and temperature field distribution in the entire gasifier. The smaller the outlet flow rate, the larger the gap, and the larger the outlet flow rate, the smaller the gap. According to different oxygen flow rates, the water-coal slurry combustion effect is best when the outlet flow rate is controlled between 110-150m / s. The end of the coal-water slurry nozzle 21-4 is connected to the coal-water slurry sleeve 11. A waste liquid channel is formed between the outer wall of the coal-water slurry nozzle 21-4 and the inner wall of the waste liquid nozzle 21-3. The waste liquid channel is connected to the waste liquid inlet chamber. The end of the fuel gas nozzle 21-5 is connected to the end of the fuel gas sleeve 10. A coal-water slurry and fuel gas channel is formed between the inner wall of the coal-water slurry nozzle 21-4 and the outer wall of the fuel gas nozzle 21-5. The coal-water slurry channel and the waste liquid channel of this device are set separately, so that the coal-water slurry premixed with fuel gas and the organic waste liquid enter the gasifier separately through the burner, preventing the organic waste liquid from mixing with the coal-water slurry and causing changes in the stability of the coal-water slurry. The organic waste liquid channel is set between the outer epoxy channel and the coal-water slurry channel, so that the premixed coal-water slurry and the outer epoxy can effectively atomize and burn the organic waste liquid. When the organic waste liquid does not need to be treated, the organic waste liquid channel can be protected by carbon dioxide or nitrogen, which will not affect the overall operation of the burner. The end of the central oxygen nozzle 21-6 is connected to the end of the central oxygen sleeve 7. The central oxygen nozzle 21-6 is a conical structure that converges towards the fire end. The opening at the top of the conical structure serves as the central oxygen channel. The outlet of the central oxygen nozzle 21-6 is designed with a gradually narrowing opening to accelerate the central oxygen. Furthermore, to ensure the connection stability of the burner head, several sets of waste liquid nozzle support blocks 21-8 are spaced between the cooling water jacket 21-1 and the waste liquid nozzle 21-3, several sets of water-coal slurry nozzle support blocks 21-7 are spaced between the waste liquid nozzle 21-3 and the water-coal slurry nozzle 21-4, and several sets of fuel gas nozzle support blocks 21-9 are spaced between the water-coal slurry nozzle 21-4 and the fuel gas nozzle 21-5.

[0037] The flow area of ​​the central oxygen inlet, the coal-water slurry inlet, the external epoxy oxygen inlet, and the waste liquid channel in this invention must all meet the flow requirements of their respective media. Under the condition that the supply pressure allows, efforts should be made to achieve good mixing and atomization effects. Therefore, the proportion of central oxygen inlet is limited, generally 10% to 20% of the total oxygen, with the remainder used for external epoxy oxygen inlet. The central oxygen inlet cannot be too small, otherwise it will not achieve the premixing and acceleration effect on the coal-water slurry, and the flame will be shorter, which will affect the burner's service life after prolonged operation. The central oxygen inlet cannot be too large either. On the one hand, excessive oxygen inlet will increase the flow velocity of the mixture in the premixing chamber too much, causing increased wear at the outlet of the central oxygen inlet nozzle 21-6, reducing the continuous service life of the burner. On the other hand, when the central oxygen inlet increases, the axial velocity component of the material at the burner outlet will inevitably increase, while the radial velocity component will decrease. As a result, the flame at the entire burner outlet becomes thin and long, unable to match the internal profile of the gasifier. This results in a shorter residence time for larger diameter coal particles in the gasifier, an increase in the carbon content in the slag, and a decrease in gasification efficiency. Furthermore, it will cause severe erosion at the slag outlet of the gasifier.

[0038] Example 2

[0039] In the above embodiment 1, the fuel gas nozzle 21-5 is a conical structure that converges from left to right. A mounting hole 21-5-2 is machined at the center of the cone apex of the conical structure. The central oxygen nozzle 21-6 extends into the mounting hole 21-5-2 and the ends of both are flush. The flush setting makes the premixing effect of the central oxygen with the coal-water slurry better. A ring of air outlet holes 21-5-1 is evenly distributed on the side wall of the conical structure in a 360° phase. The center line of the air outlet holes 21-5-1 is parallel to the center line of the burner body, forming a porous swirling structure, which makes the injected fuel gas swirling, so that the injected oxygen and fuel gas can be better mixed, improving the ignition success rate. The coal-water slurry nozzle 21-4 has a tapered structure that converges from left to right. The outlet of the coal-water slurry nozzle 21-4 is designed with a gradually narrowing opening to ensure that the coal-water slurry entering the premixing chamber has a certain velocity. The angle between the inclined part of the inner wall of the coal-water slurry nozzle 21-4 and the center line of the burner body is 18°. The tapered structure formed by this angle can provide a higher oxygen flow rate, so that the coal-water slurry mixture can be "dispersed" by the high-speed oxygen flow after being sprayed out of the burner, forming fine droplets and achieving good atomization, so as to achieve a good gasification effect in the gasifier. The distance L1 from the coal-water slurry nozzle 21-4 to the central oxygen nozzle 21-6 is 80mm. This distance provides a premixing chamber for the premixing of central oxygen and coal-water slurry. The waste liquid nozzle 21-3 has a cross-section that converges at both ends and protrudes outward in the middle. The angle between the inclined portion of the inner wall of the waste liquid nozzle 21-3 and the centerline of the burner body is 18°. The inclination of the outer wall of the coal-water slurry nozzle 21-4 is consistent with that of the inner wall of the waste liquid nozzle 21-3, forming a uniform annular gap inside the channel of the waste liquid nozzle 21-3, which accelerates the waste liquid uniformly before it is ejected. The distance L2 between the end of the coal-water slurry nozzle 21-4 and the end of the waste liquid nozzle 21-3 is 3mm, which allows the premixed coal-water slurry to effectively carry the waste liquid and atomize it for ejection. The angle between the inclined portion of the outer wall of the waste liquid nozzle 21-3 and the centerline of the burner body is 27°. The conical structure formed by this angle can match the gasifier, preventing scouring of the gasifier cylinder and the slag outlet. The inclination of the outer wall of the waste liquid nozzle 21-3 and the inner side of the outer wall of the cooling water jacket 21-1 are consistent, forming a uniform annular gap inside the outer epoxy channel. This allows for uniform acceleration before the outer epoxy is sprayed out. The distance L3 between the end of the waste liquid nozzle 21-3 and the end of the cooling water jacket 21-1 is 5mm, ensuring that the waste liquid can be effectively encapsulated, sheared, and atomized by the outer epoxy and premixed coal-water slurry. The remaining components and their connections are the same as in Example 1.

[0040] Example 3

[0041] In the above embodiment 2, the angle between the inclined inner wall of the coal-water slurry nozzle 21-4 and the center line of the burner body is 15°. The distance L1 from the extension of the coal-water slurry nozzle 21-4 relative to the central oxygen nozzle 21-6 is 50mm. The angle between the inclined inner wall of the waste liquid nozzle 21-3 and the center line of the burner body is 15°. The distance L2 between the end of the coal-water slurry nozzle 21-4 and the end of the waste liquid nozzle 21-3 is 1mm. The angle between the inclined outer wall of the waste liquid nozzle 21-3 and the center line of the burner body is 22°. The distance L3 between the end of the waste liquid nozzle 21-3 and the end of the cooling water jacket 21-1 is 2mm. All other components and their connection relationships are the same as in embodiment 2.

[0042] Example 4

[0043] In the above embodiment 2, the angle between the inclined inner wall of the coal-water slurry nozzle 21-4 and the center line of the burner body is 20°. The distance L1 from the extension of the coal-water slurry nozzle 21-4 relative to the central oxygen nozzle 21-6 is 120mm. The angle between the inclined inner wall of the waste liquid nozzle 21-3 and the center line of the burner body is 20°. The distance L2 between the end of the coal-water slurry nozzle 21-4 and the end of the waste liquid nozzle 21-3 is 5mm. The angle between the inclined outer wall of the waste liquid nozzle 21-3 and the center line of the burner body is 32°. The distance L3 between the end of the waste liquid nozzle 21-3 and the end of the cooling water jacket 21-1 is 8mm. All other components and their connection relationships are the same as in embodiment 2.

[0044] Example 5

[0045] In the above embodiment 1, the sealing box 2 is composed of an outer cover 2-1, a sealing box base 2-2, an inner cover 2-3, and a graphite packing 2-4. The outer cover 2-1 extends into the sealing box base 2-2 and presses against the graphite packing 2-4 located inside the sealing box base 2-2. The inner cover 2-3 is located at the right end of the sealing box base 2-2. The remaining components and their connections are the same as in embodiment 1.

[0046] Example 6

[0047] In Embodiment 1 above, the sealing box 2 of this embodiment is composed of an outer cover 2-1, a sealing box base 2-2, an inner cover 2-3, and a graphite packing 2-4 connected together. The outer cover 2-1 extends into the sealing box base 2-2 and presses against the graphite packing 2-4 disposed within the sealing box base 2-2. The right end of the sealing box base 2-2 extends into the inner cover 2-3 and presses against the graphite packing 2-4 disposed within the inner cover 2-3. The remaining components and their connection relationships are the same as in Embodiment 1.

Claims

1. An integrated multi-raw material waste liquid process burner, characterized in that: One end of the burner body is provided with a burner head (21) and the other end is provided with a sealing box (2). The ignition gun (1) passes through the sealing box (2) and extends into the burner body. The burner body is provided with a large mounting flange (19). The burner body is as follows: the inlet end of the first tee (3) is connected to the central oxygen inlet pipe (4), one outlet end is connected to the sealing box (2), and the other outlet end is connected to one end of the central oxygen sleeve (7) through the first flange (30). The first flange (30) is connected to the second flange (29) fitted on the central oxygen sleeve (7). The second flange (29) is connected to one outlet end of the second tee (5). The other outlet end of the second tee (5) is connected to the fuel gas sleeve (10), and the inlet end is connected to the fuel gas... The inlet pipe (6) is connected, and the fuel gas casing (10) is fitted with a third flange (28) and a fourth flange (27). The fourth flange (27) is connected to one outlet end of the third tee (8). The other outlet end of the third tee (8) is connected to the coal-water slurry casing (11), and the inlet end is connected to the coal-water slurry inlet pipe (9). The coal-water slurry casing (11) is fitted with a fifth flange (26) and a sixth flange (25). The sixth flange (25) is connected to the waste liquid casing (12). The waste liquid casing (12) side A waste liquid inlet pipe (13) is installed on the wall. A seventh flange (24) and an eighth flange (23) are fitted on the waste liquid inlet pipe (13). The eighth flange (23) is connected to one outlet end of the fourth tee (14). The other outlet end of the fourth tee (14) is connected to the inner cooling water pipe (16), and the inlet end is connected to the outer epoxy inlet pipe (15). A cooling water outer pipe (17) is installed circumferentially around the inner cooling water pipe (16). A cooling water outer pipe (17) is installed between the cooling water outer pipe (17) and the cooling water inner pipe (16). The cooling water ring pipe (20) and the cooling water inner pipe (16) form a cooling water inlet chamber. The cooling water inlet pipe (22) is connected to the cooling water inlet chamber. The cooling water outer pipe (17) and the cooling water ring pipe (20) form a cooling water outlet chamber. The cooling water outlet pipe (18) is connected to the cooling water outlet chamber. The ends of the central oxygen jacket (7), fuel gas jacket (10), coal-water slurry jacket (11), waste liquid jacket (12), and cooling water pipe are all connected to the burner head (21).

2. The integrated multi-raw material waste liquid process burner according to claim 1, characterized in that... The burner head is as follows: the two ends of the cooling water jacket (21-1) are respectively connected to the ends of the cooling water outer pipe (17) and the cooling water inner pipe (16) to form a closed cavity. A cooling water baffle (21-2) is provided inside the cooling water jacket (21-1). One end of the cooling water baffle (21-2) is connected to the end of the cooling water ring pipe (20). The end of the waste liquid nozzle (21-3) is connected to the end of the waste liquid sleeve (12). An outer epoxy channel is formed between the outer wall of the waste liquid nozzle (21-3) and the inner side of the outer wall of the cooling water jacket (21-1). The end of the coal-water slurry nozzle (21-4) is connected to the coal-water slurry sleeve (11). A waste liquid channel is formed between the outer wall of the coal-water slurry nozzle (21-4) and the inner wall of the waste liquid nozzle (21-3). The end of the fuel gas nozzle (21-5) is connected to the end of the fuel gas sleeve (10). A coal-water slurry and fuel gas channel is formed between the inner wall of the coal-water slurry nozzle (21-4) and the outer wall of the fuel gas nozzle (21-5). The end of the central oxygen nozzle (21-6) is connected to the end of the central oxygen sleeve (7). The center of the central oxygen nozzle (21-6) is the central oxygen channel.

3. The integrated multi-raw material waste liquid process burner according to claim 2, characterized in that: The fuel gas nozzle (21-5) is a conical structure that converges from left to right. A mounting hole (21-5-2) is machined at the center of the cone top. The central oxygen nozzle (21-6) extends into the mounting hole (21-5-2) and the ends of both are flush. A ring of gas outlet holes (21-5-1) is evenly distributed on the side wall of the conical structure in a 360° phase.

4. The integrated multi-raw material waste liquid process burner according to claim 3, characterized in that: The centerline of the air outlet (21-5-1) is parallel to the centerline of the burner body.

5. The integrated multi-raw material waste liquid process burner according to claim 2, characterized in that: Several sets of waste liquid nozzle support blocks (21-8) are provided at intervals between the cooling water jacket (21-1) and the waste liquid nozzle (21-3), several sets of water-coal slurry nozzle support blocks (21-7) are provided at intervals between the waste liquid nozzle (21-3) and the water-coal slurry nozzle (21-4), and several sets of fuel gas nozzle support blocks (21-9) are provided at intervals between the water-coal slurry nozzle (21-4) and the fuel gas nozzle (21-5).

6. The integrated multi-raw material waste liquid process burner according to claim 2, characterized in that: The coal-water slurry nozzle (21-4) is a conical structure that converges from left to right. The angle between the inclined part of the inner wall of the coal-water slurry nozzle (21-4) and the center line of the burner body is 15° to 20°. The cross-section of the waste liquid nozzle (21-3) is a structure that converges at both ends and protrudes outward in the middle. The angle between the inclined part of the inner wall of the waste liquid nozzle (21-3) and the center line of the burner body is 15° to 20°. The inclination of the outer wall of the coal-water slurry nozzle (21-4) and the inner wall of the waste liquid nozzle (21-3) are consistent. The angle between the inclined part of the outer wall of the waste liquid nozzle (21-3) and the center line of the burner body is 22° to 32°. The inclination of the outer wall of the waste liquid nozzle (21-3) and the inner side of the outer wall of the cooling water jacket (21-1) are consistent.

7. The integrated multi-raw material waste liquid process burner according to claim 2, characterized in that: The distance L3 between the end of the waste liquid nozzle (21-3) and the end of the cooling water jacket (21-1) is 2-8 mm. The distance L2 between the end of the coal-water slurry nozzle (21-4) and the end of the waste liquid nozzle (21-3) is 1-5 mm. The end of the fuel gas nozzle (21-5) is flush with the end of the central oxygen nozzle (21-6), and the distance L1 between the end of the coal-water slurry nozzle (21-4) and the end of the fuel gas nozzle (21-5) is 50-120 mm.

8. The integrated multi-raw material waste liquid process burner according to claim 1, characterized in that... The sealing box (2) is as follows: the outer cover (2-1) extends into the sealing box base (2-2) and presses against the graphite packing (2-4) set inside the sealing box base (2-2); the right end of the sealing box base (2-2) is provided with an inner cover (2-3).

9. The integrated multi-raw material waste liquid process burner according to claim 1, characterized in that... The sealing box (2) is as follows: the outer cover (2-1) extends into the sealing box base (2-2) and presses against the graphite packing (2-4) set inside the sealing box base (2-2); the right end of the sealing box base (2-2) extends into the inner cover (2-3) and presses against the graphite packing (2-4) set inside the inner cover (2-3).

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