A high efficiency burner for waste gas and waste acid treatment

Abstract

The application discloses a kind of high-efficiency combustor of waste gas and waste acid treatment, it is related to industrial waste gas recovery technical field;And the present application includes combustion bin and air inlet bin, the bottom side of the air inlet bin is connected with the air supply assembly for conveying air to combustion bin, the upper portion is equipped with the waste acid dehydration assembly used for treating water vapor in waste acid, it is also connected with the air inlet pipe for conveying waste gas to combustion bin, and circulating preheating assembly is arranged in combustion bin, for preheating air, waste gas and waste acid sent;The present application is provided with circulating preheating assembly, the heat generated by combustion in combustion bin is exchanged with waste gas, waste acid and air respectively in combustion bin by circulating preheating assembly, so that it reaches the temperature required for combustion more quickly after entering combustion bin, promotes fuel to burn more fully, thereby enhances waste gas treatment effect, reduces harmful gas emission, improves combustion efficiency, reduces fuel waste, reduces energy consumption.

Description

Technical Field

[0001] This invention relates to the field of industrial waste gas recovery technology, specifically to a high-efficiency burner for treating waste gas and waste acid. Background Technology

[0002] When sulfuric acid is used for refining petroleum products, waste gas containing sulfuric acid mist, hydrogen sulfide, and volatile organic compounds is generated. During the pickling process, sulfuric acid reacts with petroleum impurities such as sulfides, nitrides, and colloids. As the impurities in the acid solution increase and the concentration decreases, a large amount of waste sulfuric acid solution is also generated. If these waste gases and waste acids are directly discharged, they will cause serious environmental pollution. Therefore, it is necessary to atomize the waste acid and discharge it into the burner along with the waste gas. High-temperature combustion will promote the chemical reaction of the harmful substances in the acid, converting them into relatively harmless substances, thereby reducing the degree of environmental pollution.

[0003] Typically, waste acid is atomized and discharged into the combustion chamber along with exhaust gas. After being thoroughly mixed with a combustion accelerator, it is ignited and burned. However, the composition of waste acid and exhaust gas is complex, with different components such as hydrogen sulfide and volatile organic compounds having different combustion characteristics. When mixed with a combustion accelerator, it may be difficult to achieve the ideal mixing ratio and combustion conditions, resulting in incomplete combustion. This produces harmful gases such as carbon monoxide, increases the difficulty of exhaust gas treatment, and also reduces energy utilization efficiency, causing resource waste. Secondly, waste acid produces water vapor during combustion. Excessive moisture will absorb the heat generated by combustion, affecting the combustion temperature and combustion speed. To address these issues, the inventors have proposed a high-efficiency burner for treating waste gas and waste acid to solve these problems. Summary of the Invention

[0004] In order to solve the problems of improving the efficiency of waste acid and waste gas treatment and the pretreatment of moisture in waste acid, the present invention aims to provide a high-efficiency burner for waste gas and waste acid treatment.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: a high-efficiency burner for treating waste gas and waste acid, comprising a combustion chamber and an air inlet chamber, wherein an air supply assembly for supplying air to the combustion chamber is connected to one side of the bottom of the air inlet chamber, and a waste acid dehydration assembly for treating water vapor in waste acid is provided above it, and an air inlet pipe for supplying waste gas to the combustion chamber is also connected thereto. A circulating preheating assembly is provided inside the combustion chamber for preheating the supplied air, waste gas and waste acid;

[0006] The circulating preheating assembly includes a spiral heating tube, an air inlet preheating tube, an air inlet preheating tube, and a sulfuric acid preheating tube. The spiral heating tube is coiled inside the combustion chamber. The air inlet preheating tube, air inlet preheating tube, and sulfuric acid preheating tube are respectively installed inside the air supply assembly, the air inlet pipe, and the waste acid dehydration assembly. A fluid drive assembly for driving the flow of heat transfer oil is provided on the outside of the air supply assembly. The spiral heating tube, air inlet preheating tube, air inlet preheating tube, sulfuric acid preheating tube, and fluid drive assembly are internally interconnected to form a closed loop, and the closed loop is filled with heat transfer oil. There are two sulfuric acid preheating tubes symmetrically distributed vertically. Both sulfuric acid preheating tubes are fixedly installed at the bottom of the inner wall of the dehydration chamber. The oil inlet ends of the two sulfuric acid preheating tubes are connected to each other through a three-way pipe. The oil outlets of the two sulfuric acid preheating pipes are also connected to each other through a three-way pipe. An oil tank is fixedly installed at the end of the connecting frame away from the fluid drive component, and the bottom of the oil tank is connected to the oil inlet of the fluid drive component. The oil outlet of the fluid drive component is connected to the oil inlet of the spiral heating pipe. The oil outlet of the spiral heating pipe is connected to the oil inlet of the air inlet preheating pipe, the air inlet preheating pipe and the sulfuric acid preheating pipe through a four-way pipe. The oil outlets of the air inlet preheating pipe, the air inlet preheating pipe and the sulfuric acid preheating pipe are connected to the top of the oil tank through a four-way pipe. Several heat exchange fins arranged in a ring array are fixedly installed on the inner wall of the combustion chamber, and the spiral heating pipe is fixedly installed on the heat exchange fins. Ten guide spiral plates arranged in a ring array are fixedly installed on the inner side of the several heat exchange fins.

[0007] The air supply assembly includes a first air inlet frame, a second air inlet frame, and a guide spiral frame for guiding airflow into a spiral shape. The first air inlet frame is connected to the air inlet chamber, and the second air inlet frame is located directly above the first air inlet frame. The guide spiral frame is fixedly installed on the inner wall of the air inlet chamber. The first and second air inlet frames are respectively equipped with a first fan blade and a second fan blade for propelling airflow. A connecting frame is provided between the first and second air inlet frames, and the first and second air inlet frames are fixedly connected by the connecting frame. Both the frame and the inner wall of the second air inlet frame are fixedly equipped with bearing seats. The first driven shaft and the second driven shaft are rotatably mounted in the two bearing seats respectively. The first fan blade and the second fan blade are fixedly connected to the first driven shaft and the second driven shaft respectively. The middle of the connecting frame is equipped with a drive shaft. The first driven shaft, the second driven shaft and the drive shaft are connected to the drive shaft through a synchronous wheel transmission group. The outside of the connecting frame is fixedly equipped with a motor. The drive end of the motor is fixedly connected to the drive shaft through a coupling. The air inlet preheating pipe is fixedly installed on the inner wall of the first air inlet frame.

[0008] Preferably, the waste acid dehydration assembly includes a dehydration chamber, an acid inlet pipe, and an acid outlet pipe. The dehydration chamber is fixedly installed on the outer wall of the air inlet chamber by a fixed bracket. The acid inlet pipe and the acid outlet pipe are respectively connected to both ends of the dehydration chamber. The acid outlet pipe is inclined downward and its bottom penetrates the air inlet chamber. The end of the acid outlet pipe is provided with an atomizing nozzle for spraying the waste acid. The nozzle of the atomizing nozzle is inclined upward. The acid inlet pipe is vertically downward and its bottom end is connected to an external waste acid input pipe through a flange. The dehydration chamber is driven and fixedly provided with an air guide pipe. Several symmetrically distributed exhaust slots are opened between the air guide pipe and the dehydration chamber. The air guide pipe and the dehydration chamber are connected through the exhaust slots. The air inlet end of the air guide pipe is connected to the second air inlet frame through a ball valve. The air outlet end of the air guide pipe is connected to the external acid mist treatment equipment through a flange.

[0009] Preferably, the fluid drive assembly includes a housing and a rotating shaft. The housing is fixedly installed on the outer wall of the connecting frame near the air inlet chamber, and the drive shaft is rotatably connected to the housing. The rotating shaft is rotatably installed on the connecting frame, and the rotating shaft and the drive shaft are vertically symmetrically distributed. The outer walls of the drive shaft and the rotating shaft are respectively fixedly provided with a first push slider and a second push slider that cooperate with the housing. The outer walls of the drive shaft and the rotating shaft located outside the housing are respectively fixedly provided with a driving gear and a driven gear, and the driving gear and the driven gear are meshed together.

[0010] Preferably, the combustion chamber has a flame chamber at the bottom, and the combustion chamber and the air inlet chamber are connected through the flame chamber. Two symmetrically distributed spray guns are provided on both sides of the inner wall of the flame chamber, and a top cover is connected to the flange at the top of the combustion chamber.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. By setting up a circulating preheating component, the heat generated by combustion in the combustion chamber is effectively exchanged with the exhaust gas, waste acid and air discharged into the combustion chamber through the circulating preheating component, so that they reach the required combustion temperature more quickly after entering the combustion chamber, promote more complete combustion of fuel, thereby enhancing the exhaust gas treatment effect, reducing harmful gas emissions, improving combustion efficiency, reducing fuel waste and reducing energy consumption;

[0013] 2. This invention sets up a waste acid dehydration component and an air supply component. During the preheating process, the water in the waste acid evaporates. At the same time, the air supply component continuously supplies air into the air duct, which reduces the pressure inside the air duct. This forces the evaporated water vapor to be drawn into the air duct and discharged under the action of the pressure difference. Through the coordinated work of the waste acid dehydration component and the air supply component, the water content in the waste acid is reduced, thereby improving the combustion efficiency and speed.

[0014] 3. By setting up an air supply component, the present invention continuously inputs air into the air inlet chamber. As the air in the air inlet chamber rises in a straight line, it enters the guide spiral frame. Under the action of the spiral channel structure of the guide spiral frame, the straight airflow is changed into a spiral rising airflow. The spiral rising airflow increases the residence time and path of the mixed gas in the air inlet chamber and the combustion chamber, which promotes better mixing and combustion of exhaust gas, waste acid and air, and provides high overall combustion efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall side profile of the present invention;

[0018] Figure 3 This is a schematic diagram of the overall circulation structure of the circulating preheating component in this invention;

[0019] Figure 4 This is a schematic diagram of the side cross-section structure of the air supply component in this invention;

[0020] Figure 5 This is a schematic diagram of the side cross-section structure of the waste acid dehydration component in this invention;

[0021] Figure 6 This is a schematic diagram of the explosion structure of the combustion chamber, air intake chamber, and flame chamber in this invention;

[0022] Figure 7 This is a schematic diagram of the side-section structure of the combustion chamber in this invention;

[0023] Figure 8 This is a schematic diagram of the structure of the heat exchange fins, the flow guiding spiral plate, and the spiral heating tube in this invention;

[0024] Figure 9 This is a schematic diagram of the flow-guiding spiral frame in this invention;

[0025] Figure 10 for Figure 2 Enlarged structural diagram at point A;

[0026] Figure 11 for Figure 3 Enlarged structural diagram at point B;

[0027] Figure 12 for Figure 4 Enlarged schematic diagram of the structure at point C;

[0028] Figure 13 for Figure 6 Enlarged schematic diagram of the structure at point D.

[0029] In the diagram: 1. Combustion chamber; 2. Air inlet chamber; 3. Air supply assembly; 301. No. 1 air inlet frame; 302. No. 2 air inlet frame; 303. No. 1 driven shaft; 304. No. 2 driven shaft; 305. No. 1 fan blade; 306. No. 2 fan blade; 307. Connecting frame; 308. Motor; 309. Drive shaft; 310. Guide spiral frame; 4. Waste acid dehydration assembly; 401. Dehydration chamber; 402. Acid inlet pipe; 403. Acid outlet pipe; 404. Air duct; 405. Exhaust trough; 406. Atomizing spray. 5. Head; 6. Air inlet pipe; 7. Circulating preheating assembly; 8. Spiral heating tube; 9. Air inlet preheating tube; 10. Air inlet preheating tube; 11. Sulfuric acid preheating tube; 12. Fluid drive assembly; 13. Outer shell; 14. Rotating shaft; 15. Push slider; 16. Push slider; 17. Driven gear; 18. Driven gear; 19. Oil tank; 20. Heat exchange fins; 21. Guide spiral plate; 22. Flame chamber; 33. Flame gun; 44. Top cover. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example: Figure 1-13 As shown, the present invention provides a technical solution: a high-efficiency burner for treating waste gas and waste acid, including a combustion chamber 1 and an air inlet chamber 2. An air supply assembly 3 for supplying air to the combustion chamber 1 is connected to one side of the bottom of the air inlet chamber 2. A waste acid dehydration assembly 4 for treating water vapor in waste acid is provided above it. An air inlet pipe 5 for supplying waste gas to the combustion chamber 1 is also connected. A circulating preheating assembly 6 is provided inside the combustion chamber 1 for preheating the supplied air, waste gas and waste acid.

[0032] The circulating preheating component 6 includes a spiral heating tube 601, an air inlet preheating tube 602, an air inlet preheating tube 603, and a sulfuric acid preheating tube 604. The spiral heating tube 601 is coiled inside the combustion chamber 1. The air inlet preheating tube 602, the air inlet preheating tube 603, and the sulfuric acid preheating tube 604 are respectively installed in the air supply component 3, the air inlet pipe 5, and the waste acid dehydration component 4. The air supply component 3 is provided with a fluid drive component 605 for driving the flow of heat transfer oil. The spiral heating tube 601, the air inlet preheating tube 602, the air inlet preheating tube 603, the sulfuric acid preheating tube 604, and the fluid drive component 605 are interconnected and form a closed loop, and the closed loop is filled with heat transfer oil.

[0033] The air supply assembly 3 includes a first air inlet frame 301, a second air inlet frame 302, and a guide spiral frame 310 for guiding airflow to form a spiral flow. The first air inlet frame 301 is connected to the air inlet chamber 2. The second air inlet frame 302 is located directly above the first air inlet frame 301. The guide spiral frame 310 is fixedly installed on the inner wall of the air inlet chamber 2. The first air inlet frame 301 and the second air inlet frame 302 are respectively provided with a first fan blade 305 and a second fan blade 306 for promoting airflow. The air inlet preheating pipe 602 is fixedly installed on the inner wall of the first air inlet frame 301.

[0034] By adopting the above technical solution, the heat generated in the combustion chamber 1 is circulated to preheat the exhaust gas, waste acid and input air respectively, so that they can reach the required combustion temperature more quickly after entering the combustion chamber 1, promote more complete combustion of fuel, improve combustion efficiency, reduce fuel waste and reduce energy consumption.

[0035] The waste acid dehydration assembly 4 includes a dehydration chamber 401, an acid inlet pipe 402, and an acid outlet pipe 403. The dehydration chamber 401 is fixedly installed on the outer wall of the air inlet chamber 2 by a fixed bracket. The acid inlet pipe 402 and the acid outlet pipe 403 are respectively connected to both ends of the dehydration chamber 401. The acid outlet pipe 403 is inclined downward, which is conducive to the natural flow of the dehydrated waste acid by gravity. The bottom of the acid outlet pipe 403 passes through the air inlet chamber 2. The end of the acid outlet pipe 403 is provided with an atomizing nozzle 406 for atomizing and spraying the waste acid. The nozzle of the atomizing nozzle 406 is inclined upward. The acid inlet pipe 402 is vertically downward. The bottom end of the acid inlet pipe 402 is connected to an external waste acid input pipe through a flange.

[0036] By adopting the above technical solution, the waste acid enters the dehydration chamber 401 and flows along the inclined downward-facing acid discharge pipe 403 to the atomizing nozzle 406, where it is atomized and sprayed out. This increases the contact area between the waste acid and the air, which is beneficial for more complete combustion treatment in the combustion chamber 1.

[0037] A connecting frame 307 is provided between the first air inlet frame 301 and the second air inlet frame 302, and the first air inlet frame 301 and the second air inlet frame 302 are fixedly connected by the connecting frame 307. The inner walls of the first air inlet frame 301 and the second air inlet frame 302 are both fixedly provided with bearing seats. The first driven shaft 303 and the second driven shaft 304 are rotatably provided in the two bearing seats, and the first fan blade 305 and the second fan blade 306 are fixedly connected to the first driven shaft 303 and the second driven shaft 304, respectively. A drive shaft 309 is rotatably provided in the middle of the connecting frame 307, and the first driven shaft 303, the second driven shaft 304 and the drive shaft 309 are connected by a synchronous pulley transmission group.

[0038] By adopting the above technical solution, the No. 1 air inlet frame 301 and the No. 2 air inlet frame 302 can continuously and stably output air.

[0039] The fluid drive assembly 605 includes a housing 6501 and a rotating shaft 6502. The housing 6501 is fixedly installed on the outer wall of the connecting frame 307 near the air inlet chamber 2, and the drive shaft 309 is rotatably connected to the housing 6501. The rotating shaft 6502 is rotatably installed on the connecting frame 307, and the rotating shaft 6502 and the drive shaft 309 are vertically symmetrically distributed. The outer walls of the drive shaft 309 and the rotating shaft 6502 are respectively fixed with a first push slider 6503 and a second push slider 6504 that cooperate with the housing 6501. The drive shaft 309 and the rotating shaft 6502 located outside the housing 6501 are respectively fixed with a driving gear 6505 and a driven gear 6506, and the driving gear 6505 and the driven gear 6506 are meshed together.

[0040] By adopting the above technical solution, the first push slider 6503 and the second push slider 6504 cooperate in an orderly manner to press the heat transfer oil, forcing the heat transfer oil in the closed circulation loop to flow continuously and stably.

[0041] The dehydration chamber 401 is equipped with a fixed air guide pipe 404, and several symmetrically distributed exhaust slots 405 are provided between the air guide pipe 404 and the dehydration chamber 401. The air guide pipe 404 and the dehydration chamber 401 are connected through the exhaust slots 405. The air inlet end of the air guide pipe 404 is connected through the second air inlet frame 302 through a ball valve, and the air outlet end of the air guide pipe 404 is connected through the external acid mist treatment equipment through a flange.

[0042] By adopting the above technical solution, the second air inlet frame 302 continuously inputs air into the air duct 404, which forces the internal pressure of the air duct 404 to decrease, so that the water vapor in the dehydration chamber 401 can be smoothly drawn into the air duct 404 through the exhaust groove 405 and discharged with the flowing air.

[0043] Two sulfuric acid preheating pipes 604 are provided, which are symmetrically distributed vertically. Both sulfuric acid preheating pipes 604 are fixedly installed at the bottom of the inner wall of the dehydration chamber 401. The oil inlet ends of the two sulfuric acid preheating pipes 604 are connected to each other through a three-way pipe, and the oil outlet ends of the two sulfuric acid preheating pipes 604 are also connected to each other through a three-way pipe.

[0044] By adopting the above technical solution, the heat transfer oil exchanges heat with the waste acid in the dehydration chamber 401, which raises the temperature of the waste acid, promotes the evaporation of water inside the waste acid, reduces the water content inside the waste acid, and preheats the waste acid.

[0045] An oil tank 606 is fixedly installed at the end of the connecting frame 307 away from the fluid drive assembly 605. The bottom of the oil tank 606 is connected to the oil inlet of the fluid drive assembly 605. The oil outlet of the fluid drive assembly 605 is connected to the oil inlet of the spiral heating tube 601. The oil outlet of the spiral heating tube 601 is connected to the oil inlets of the air inlet preheating tube 602, the air inlet preheating tube 603, and the sulfuric acid preheating tube 604 through a four-way pipe. The oil outlets of the air inlet preheating tube 602, the air inlet preheating tube 603, and the sulfuric acid preheating tube 604 are connected to the top of the oil tank 606 through a four-way pipe.

[0046] By adopting the above technical solution, the heat transfer oil can flow continuously and stably in a closed loop formed by the oil tank 606, the fluid drive component 605, the spiral heating tube 601, the air inlet preheating tube 602, the air inlet preheating tube 603, and the sulfuric acid preheating tube 604.

[0047] The inner wall of the combustion chamber 1 is fixedly provided with several heat exchange fins 607 arranged in an annular array, and the spiral heating tube 601 is fixedly installed on the heat exchange fins 607. Ten flow guiding spiral plates 608 arranged in an annular array are fixedly provided on the inner side of the several heat exchange fins 607.

[0048] By adopting the above technical solution, the heat exchange fins 607 can increase the heat exchange area, efficiently absorb the heat of the flame, and conduct the heat to the spiral heating tube 601 fixedly installed on it, thereby rapidly increasing the temperature of the heat transfer oil inside the spiral heating tube 601.

[0049] The combustion chamber 1 is equipped with a flame chamber 7 at the bottom, and the combustion chamber 1 and the air inlet chamber 2 are connected through the flame chamber 7. Two symmetrically distributed spray guns 8 are provided on both sides of the inner wall of the flame chamber 7, and the top flange of the combustion chamber 1 is connected to a top cover 9.

[0050] By adopting the above technical solution, the gas mixed with waste gas and atomized waste acid is ignited by the spray gun 8.

[0051] A motor 308 is fixedly mounted on the outside of the connecting frame 307, and the driving end of the motor 308 is fixedly connected to the drive shaft 309 through a coupling.

[0052] By adopting the above technical solution, the motor 308 drives the drive shaft 309 to rotate continuously.

[0053] Working principle: Combining Figure 2 , Figure 3 As shown, when the equipment starts running, the spray gun 8 inside the flame chamber 7 is first ignited, and at the same time the motor 308 is controlled to open the ball valve. The motor 308 drives the first driven shaft 303 and the second driven shaft 304 to rotate through the drive shaft 309 and the synchronous wheel transmission group, respectively. In turn, the first driven shaft 303 and the second driven shaft 304 drive the first fan blade 305 and the second fan blade 306 to rotate, respectively. The first fan blade 305 stably delivers air to the air inlet chamber 2, and the second fan blade 306 rotates to guide the air duct 404 to stably deliver air.

[0054] The spray gun 8 sprays out flames, and the heat generated is transferred to the heat exchange fins 607. The heat exchange fins 607 have a large surface area, which can efficiently absorb the heat of the flames and conduct the heat to the spiral heating tube 601 fixedly installed on it, thereby raising the temperature of the heat transfer oil inside the spiral heating tube 601.

[0055] During rotation, drive shaft 309 drives rotating shaft 6502 to rotate in the opposite direction via drive gear 6505 and driven gear 6506. Drive gear 6505 and driven gear 6506 are of the same specification. Drive shaft 309 and rotating shaft 6502 respectively drive first push slider 6503 and second push slider 6504 to move relative to each other. Through the orderly cooperation of first push slider 6503 and second push slider 6504, the heat transfer oil is pressed, forcing the heat transfer oil in oil tank 606 to be compressed. Oil is continuously supplied to the spiral heating tube 601. After the heat transfer oil in the spiral heating tube 601 is heated, it is introduced from the oil inlet end of the air inlet preheating tube 602, the air inlet preheating tube 603 and the sulfuric acid preheating tube 604 respectively. During the flow of the heat transfer oil in each preheating tube, it exchanges heat with the air, waste gas and waste acid outside the tube to preheat them. After the heat exchange is completed, the heat transfer oil is discharged from the oil outlet end of each preheating tube, and after merging, it flows back to the oil tank 606, thus completing the entire heat transfer oil circulation process.

[0056] After the oil temperature rises to the set temperature, exhaust gas is introduced into the air inlet chamber 2 through the air inlet pipe 5, and waste acid is introduced into the acid inlet pipe 402 at the same time. The waste acid enters the dehydration chamber 401 along the acid inlet pipe 402 and comes into full contact with the outer wall of the sulfuric acid preheating pipe 604 for heat exchange, which promotes the evaporation and rise of the water inside the waste acid. As the second air inlet frame 302 continuously supplies air into the air duct 404, the air in the air duct 404 flows rapidly. The rapid air flow reduces the pressure inside the air duct 404. The pressure difference forces the water vapor evaporated from the waste acid to be drawn into the air duct 404 from the exhaust trough 405 and discharged along the flowing air to the external acid mist treatment equipment for treatment. The waste acid after preliminary dehydration is transported from the acid discharge pipe 403 to the atomizing nozzle 406 for atomization and spraying.

[0057] As the air enters the air inlet chamber 2, it rises and enters the guide spiral frame 310. The guide spiral frame 310 has a spiral channel structure. When the air flows through the spiral channel, the channel wall exerts a lateral force on the air, forcing the air to change its original vertical upward direction, thus forming a spiral upward airflow. This promotes better mixing of exhaust gas, air, and atomized waste acid, improving the mixing uniformity and facilitating a more complete combustion reaction in the combustion chamber 1. After the mixed gas enters the combustion chamber 7 and is ignited, it is fully combusted in the combustion chamber 1. After entering the combustion chamber 1, the spiral airflow continues to rise spirally under the action of the guide spiral plate 608, increasing the path and residence time in the combustion chamber 1, improving heat exchange efficiency, and further enhancing the energy utilization efficiency and treatment effect of the entire high-efficiency burner for exhaust gas and waste acid treatment.

[0058] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A high-efficiency burner for treating waste gas and waste acid, comprising a combustion chamber (1) and an air inlet chamber (2), characterized in that: The bottom side of the air inlet chamber (2) is connected to an air supply assembly (3) that supplies air to the combustion chamber (1). Above it is a waste acid dehydration assembly (4) used for treating water vapor in waste acid. It is also connected to an air inlet pipe (5) for supplying waste gas to the combustion chamber (1). The combustion chamber (1) is equipped with a circulating preheating assembly (6) for preheating the supplied air, waste gas and waste acid. The circulating preheating component (6) includes a spiral heating tube (601), an air inlet preheating tube (602), an air inlet preheating tube (603), and a sulfuric acid preheating tube (604). The spiral heating tube (601) is coiled inside the combustion chamber (1). The air inlet preheating tube (602), the air inlet preheating tube (603), and the sulfuric acid preheating tube (604) are respectively installed in the air supply component (3), the air inlet pipe (5), and the waste acid dehydration component (4). The air supply component (3) is provided with a fluid drive component (605) for driving the flow of heat transfer oil. The spiral heating tube (601), the air inlet preheating tube (602), the air inlet preheating tube (603), the sulfuric acid preheating tube (604), and the fluid drive component (605) are interconnected and form a closed loop. The closed loop is filled with heat transfer oil. The air supply assembly (3) includes a first air inlet frame (301), a second air inlet frame (302), and a guide spiral frame (310) for guiding airflow to form a spiral flow. The first air inlet frame (301) is connected to the air inlet chamber (2), the second air inlet frame (302) is located directly above the first air inlet frame (301), and the guide spiral frame (310) is fixedly installed on the inner wall of the air inlet chamber (2). The first air inlet frame (301) and the second air inlet frame (302) are respectively provided with a first fan blade (305) and a second fan blade (306) for promoting airflow. The waste acid dehydration assembly (4) includes a dehydration chamber (401), an acid inlet pipe (402), and an acid outlet pipe (403). The dehydration chamber (401) is fixedly installed on the outer wall of the air inlet chamber (2) by a fixed bracket. The acid inlet pipe (402) and the acid outlet pipe (403) are respectively connected to both ends of the dehydration chamber (401). The acid outlet pipe (403) is inclined downward and the bottom of the acid outlet pipe (403) penetrates the air inlet chamber (2). The end of the acid outlet pipe (403) is provided with an atomizing nozzle (406) for atomizing and spraying the waste acid. The nozzle of the atomizing nozzle (406) is inclined upward. The acid inlet pipe (402) is vertically downward and the bottom end of the acid inlet pipe (402) is connected to an external waste acid input pipe through a flange. A connecting frame (307) is provided between the first air inlet frame (301) and the second air inlet frame (302), and the first air inlet frame (301) and the second air inlet frame (302) are fixedly connected by the connecting frame (307). A bearing seat is fixedly provided on the inner wall of both the first air inlet frame (301) and the second air inlet frame (302). A first driven shaft (303) and a second driven shaft (304) are rotatably mounted in the two bearing seats, respectively. The first fan blade... (305) and the second fan blade (306) are fixedly connected to the first driven shaft (303) and the second driven shaft (304) respectively. The connecting frame (307) is provided with a drive shaft (309) in the middle. The first driven shaft (303), the second driven shaft (304) and the drive shaft (309) are connected by a synchronous wheel transmission group. The air inlet preheating pipe (602) is fixedly installed on the inner wall of the first air inlet frame (301).

2. The high-efficiency burner for treating waste gas and waste acid as described in claim 1, characterized in that, The fluid drive assembly (605) includes a housing (6501) and a rotating shaft (6502). The housing (6501) is fixedly installed on the outer wall of the connecting frame (307) near the air inlet chamber (2), and the drive shaft (309) is rotatably connected to the housing (6501). The rotating shaft (6502) is rotatably installed on the connecting frame (307), and the rotating shaft (6502) and the drive shaft (309) are vertically symmetrically distributed. The outer walls of the drive shaft (309) and the rotating shaft (6502) are respectively fixed with a first push slider (6503) and a second push slider (6504) that cooperate with the housing (6501). The drive shaft (309) and the rotating shaft (6502) located outside the housing (6501) are respectively fixed with a drive gear (6505) and a driven gear (6506), and the drive gear (6505) and the driven gear (6506) are meshed.

3. The high-efficiency burner for treating waste gas and waste acid as described in claim 1, characterized in that, The dehydration chamber (401) is equipped with a fixed air guide pipe (404), and several symmetrically distributed exhaust slots (405) are provided between the air guide pipe (404) and the dehydration chamber (401). The air guide pipe (404) and the dehydration chamber (401) are connected through the exhaust slots (405). The air inlet end of the air guide pipe (404) is connected through the second air inlet frame (302) through a ball valve. The air outlet end of the air guide pipe (404) is connected through the external acid mist treatment equipment through a flange.

4. The high-efficiency burner for treating waste gas and waste acid as described in claim 1, characterized in that, The sulfuric acid preheating pipe (604) is provided in two symmetrically distributed vertically. Both sulfuric acid preheating pipes (604) are fixedly installed at the bottom of the inner wall of the dehydration chamber (401). The oil inlet ends of the two sulfuric acid preheating pipes (604) are connected to each other through a three-way pipe, and the oil outlet ends of the two sulfuric acid preheating pipes (604) are also connected to each other through a three-way pipe.

5. The high-efficiency burner for treating waste gas and waste acid as described in claim 1, characterized in that, An oil tank (606) is fixedly provided at the end of the connecting frame (307) away from the fluid drive assembly (605), and the bottom of the oil tank (606) is connected to the oil inlet of the fluid drive assembly (605). The oil outlet of the fluid drive assembly (605) is connected to the oil inlet of the spiral heating tube (601). The oil outlet of the spiral heating tube (601) is connected to the oil inlet of the air preheating tube (602), the air preheating tube (603), and the sulfuric acid preheating tube (604) through a four-way pipe. The oil outlets of the air preheating tube (602), the air preheating tube (603), and the sulfuric acid preheating tube (604) are connected to the top of the oil tank (606) through a four-way pipe.

6. The high-efficiency burner for treating waste gas and waste acid as described in claim 1, characterized in that, The combustion chamber (1) has several heat exchange fins (607) arranged in a ring array fixed on its inner wall, and a spiral heating tube (601) is fixedly installed on the heat exchange fins (607). Ten flow guide spiral plates (608) arranged in a ring array are fixedly installed on the inner side of the several heat exchange fins (607).

7. The high-efficiency burner for treating waste gas and waste acid as described in claim 1, characterized in that, The combustion chamber (1) is provided with a flame chamber (7) at the bottom, and the combustion chamber (1) and the air inlet chamber (2) are connected through the flame chamber (7). Two symmetrically distributed spray guns (8) are provided on both sides of the inner wall of the flame chamber (7), and the top flange of the combustion chamber (1) is connected to a top cover (9).

8. The high-efficiency burner for treating waste gas and waste acid as described in claim 1, characterized in that, A motor (308) is fixedly mounted on the outside of the connecting frame (307), and the driving end of the motor (308) is fixedly connected to the driving shaft (309) through a coupling.

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