Filtering, desulfurizing and cleaning device for sulfur-containing industrial waste gas

Abstract

The utility model relates to the technical field of waste gas filtering, in particular to a sulfur-containing industrial waste gas filtering, desulfurizing and cleaning device which comprises a base plate, a middle stress plate is fixedly arranged at the left end of the upper surface of the base plate, a supporting frame is fixedly arranged at the left end of the upper surface of the middle stress plate, and a booster pump is fixedly arranged in the middle of the top of the supporting frame. The front end of the booster pump is communicated with a high-pressure connecting pipe, one end, far away from the booster pump, of the high-pressure connecting pipe penetrates through the absorption tower and is communicated with a vertical pipe, and two ends of the vertical pipe are respectively sleeved with annular spray pipes. The ammonia water tank, the booster pump, the annular spray pipe and other parts are arranged, ammonia water is used as an absorbent and sprayed into the absorption tower through the booster pump, the ammonia water is uniformly and fully contacted and reacted with rising sulfur-containing waste gas to generate chemical reaction or physical dissolution, the ammonia-process desulfurization efficiency is high and can reach about 95%, a byproduct can be used as a chemical fertilizer, and the production cost is reduced. The cost input of desulfurization cleaning is reduced, and certain economic benefits are achieved.

Description

Technical Field

[0001] This application relates to the technical field of waste gas filtration, and in particular to a sulfur-containing industrial waste gas filtration, desulfurization, and cleaning device. Background Technology

[0002] Sulfur-containing industrial waste gas refers to gaseous pollution containing sulfur compounds emitted during industrial production processes. When sulfur dioxide and sulfur trioxide in these waste gases are released into the atmosphere, they combine with water vapor to form sulfurous acid and sulfuric acid. When these acidic substances accumulate to a certain level, they fall to the ground as rainfall, forming acid rain. Acid rain acidifies water bodies, harming aquatic life and acidifying soil, leading to decreased soil fertility and affecting plant growth. Sulfur-containing waste gases such as sulfur dioxide can enter plants through their stomata, interfering with normal physiological functions, affecting photosynthesis and respiration, causing yellowing and necrotic spots on leaves, and in severe cases, death. This causes serious damage to forests, crops, and other vegetation. Sulfur dioxide, hydrogen sulfide, and other sulfur-containing gases have irritating odors; inhalation can irritate the respiratory mucosa, causing symptoms such as coughing, wheezing, and difficulty breathing. Long-term exposure to sulfur-containing waste gas environments can also increase the incidence of respiratory diseases such as chronic bronchitis and emphysema.

[0003] A search revealed Chinese Patent Publication No. CN 219580232 U, which discloses a sulfur-containing industrial waste gas filtration, desulfurization, and cleaning device. The waste gas is processed sequentially from start to finish, passing through the filtration device, desulfurization device, and cleaning device. The filtration device is connected to the desulfurization device via a pipeline, and the desulfurization device is connected to the cleaning device via a pipeline. The filtration device is fixedly connected to one side of the cleaning device. The desulfurization device is located on one side of the filtration and cleaning devices. The filtration device includes a motor I, an L-shaped brush plate, a connecting shaft, a ceramic filter tube, a connecting pipe I, a filter barrel, a housing I, an air inlet, a support plate, a dust removal hopper, and a mounting plate. This invention can treat and recover dust from the waste gas while also treating alkaline substances and salts produced by the neutralization reaction carried in the desulfurized waste gas.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: when filtering sulfur-containing industrial waste gas, the methods are limited, the desulfurization and filtration effects are not thorough enough, the discharged waste gas affects the environment, and the residues from the desulfurization process cannot be treated in a timely manner. Utility Model Content

[0005] To address the problems mentioned in the background section, this application provides a sulfur-containing industrial waste gas filtration, desulfurization, and cleaning device.

[0006] This application provides a sulfur-containing industrial waste gas filtration, desulfurization, and cleaning device, which adopts the following technical solution: it includes a base plate, a central load-bearing structure is fixedly installed at the left end of the upper surface of the base plate, a support frame is fixedly installed at the left end of the upper surface of the central load-bearing structure, a booster pump is fixedly installed at the middle position of the top of the support frame, a high-pressure connecting pipe is connected to the front end of the booster pump, the end of the high-pressure connecting pipe away from the booster pump passes through the absorption tower and is connected to a vertical pipe, both ends of the vertical pipe are respectively fitted with annular nozzles, a fixing block is fixedly fitted to the outside of the annular nozzles, the end of the fixing block away from the annular nozzles is fixedly installed on the inner wall of the absorption tower, and the bottom of the absorption tower is fixedly installed on the middle part of the upper surface of the central load-bearing structure near the left end by a support leg.

[0007] A conveying pipe is connected to one side of the absorption tower near the bottom. An oxidation box is connected to the other end of the conveying pipe away from the absorption tower. A motor is fixedly installed on the top of the oxidation box. A first spur gear is fixedly sleeved on the output shaft of the motor. A second spur gear is set up by meshing the teeth on one side of the outer circumference of the first spur gear. A feed pipe is fixedly inserted into the middle of the second spur gear. A spray box is fixedly installed at the bottom of the feed pipe through the top of the oxidation box.

[0008] Optionally, a liquid pipe is fixedly installed on the top of the booster pump, with the end of the liquid pipe away from the booster pump located on the top of the ammonia tank. The bottom of the ammonia tank is fixedly installed on the left end of the upper surface of the middle load-bearing plate. There are two ammonia tanks, and the tops of the two ammonia tanks are connected to the top of the booster pump through two identical liquid pipes.

[0009] Optionally, an air inlet pipe is fixedly connected near the bottom of the absorption tower, and a thin tube with a smaller diameter is provided at the end of the air inlet pipe away from the absorption tower. An air outlet pipe is fixedly provided near the top of the absorption tower, and the bottom of the absorption tower is set as a cone.

[0010] Optionally, the oxidation chamber is fixedly inserted into the middle of the middle load-bearing plate near the right end, and a discharge port is fixedly provided on the outer side of the bottom of the oxidation chamber. The bottom of the oxidation chamber is fixedly connected to the upper surface of the base plate.

[0011] Optionally, spray holes are fixedly provided near the bottom of the spray box, and the spray holes are evenly distributed on the outer circumference of the spray box. The diameter of the spray box is smaller than the width of the inner wall of the oxidation chamber.

[0012] Optionally, two limiting rings are snapped into the middle of the feed pipe. The limiting rings are located on the inner and outer sides of the top of the oxidation chamber. A funnel is fixedly installed at the top of the feed pipe, and the funnel is connected to the feed pipe.

[0013] Optionally, the number of annular nozzles is three, the three annular nozzles are connected by a vertical pipe, the three annular nozzles are evenly arranged inside the absorption tower by a fixing block, and each of the three annular nozzles is provided with a spray head in its inner ring.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. This utility model, by setting up components such as an ammonia tank, a booster pump, and a circular spray pipe, uses ammonia as an absorbent. The booster pump sprays ammonia into the interior of the absorption tower, where the ammonia comes into full and uniform contact with the rising sulfur-containing waste gas, resulting in a chemical reaction or physical dissolution. The ammonia desulfurization method has a high efficiency, reaching about 95%, and the by-products can be used as fertilizer, reducing the cost of desulfurization cleaning and achieving certain economic benefits.

[0016] 2. This utility model, by setting up components such as a conveying pipe, an oxidation box, and a spray box, allows the spray box to rotate inside the oxidation box under the action of the upper feeding pipe, evenly spreading the catalyst inside the feeding pipe into the oxidation box. This achieves the oxidation of ammonium sulfite and ammonium bisulfite generated from industrial waste gas after ammonia water treatment, thereby obtaining byproducts such as ammonium sulfate. The byproducts can be collected for convenient subsequent utilization. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure in the embodiments of this application;

[0018] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the absorption tower in the embodiments of this application;

[0019] Figure 3 This is a three-dimensional structural diagram of the annular nozzle in an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the oxidation chamber in an embodiment of this application.

[0021] Reference numerals: 1. Base plate; 2. Central load-bearing plate; 3. Oxidation tank; 4. Motor; 5. Feed pipe; 6. First spur gear; 7. Funnel; 8. Absorption tower; 9. Second spur gear; 10. Conveying pipe; 11. Air inlet pipe; 12. Liquid pipe; 13. Ammonia tank; 14. Booster pump; 15. Support frame; 16. Spray box; 17. Vertical pipe; 18. Circular spray pipe; 19. Fixing block; 20. High-pressure connecting pipe. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] This application discloses a sulfur-containing industrial waste gas filtration, desulfurization, and cleaning device. For example... Figure 1As shown, the system includes a base plate 1. A central load-bearing plate 2 is fixedly installed on the left end of the upper surface of the base plate 1. A support frame 15 is fixedly installed on the left end of the upper surface of the central load-bearing plate 2. A booster pump 14 is fixedly installed at the middle position of the top of the support frame 15. A liquid pipe 12 is fixedly installed on the top of the booster pump 14. The end of the liquid pipe 12 away from the booster pump 14 is located on the top of the ammonia tank 13. The bottom of the ammonia tank 13 is fixedly installed on the left end of the upper surface of the central load-bearing plate 2. There are two ammonia tanks 13. The tops of the two ammonia tanks 13 are connected to the top of the booster pump 14 through two identical liquid pipes 12. The booster pump 14 draws out the ammonia water inside the ammonia tank 13 through the liquid pipe 12 and then sprays the ammonia water into the interior of the absorption tower 8 in the form of droplets to fully contact and react with the rising sulfur-containing waste gas.

[0024] Please see Figure 2 A high-pressure connecting pipe 20 is connected to the front end of the booster pump 14. The end of the high-pressure connecting pipe 20 away from the pressure pump passes through the absorption tower 8 and is connected to a vertical pipe 17. Circular nozzles 18 are respectively sleeved at both ends of the vertical pipe 17. There are three circular nozzles 18, which are connected through the vertical pipe 17. The three circular nozzles 18 are evenly arranged inside the absorption tower 8 by fixing blocks 19. Spray heads are provided on the inner ring of each of the three circular nozzles 18. The even arrangement of three identical circular nozzles 18 inside the absorption tower 8 facilitates the uniform spraying of ammonia water into the interior of the absorption tower 8, allowing the ammonia water to fully contact the rising gas.

[0025] Please see Figure 2 and Figure 3 A fixing block 19 is fixedly sleeved on the outer side of the annular nozzle 18. The end of the fixing block 19 away from the annular nozzle 18 is fixedly set on the inner wall of the absorption tower 8. An air inlet pipe 11 is fixedly inserted near the bottom of the absorption tower 8. A thin tube with a smaller diameter is set at the end of the air inlet pipe 11 away from the absorption tower 8. An air outlet pipe is fixedly set near the top of the absorption tower 8. The bottom of the absorption tower 8 is set as a cone shape, with the air inlet pipe 11 set at the bottom. During the process of gas rising, it fully contacts the sprayed ammonia water to improve the desulfurization efficiency. The bottom of the absorption tower 8 is fixedly set on the middle part of the upper surface of the middle stress plate 2 near the left end by the support leg.

[0026] Please see Figure 2The absorption tower 8 is connected to a conveying pipe 10 near the bottom. The end of the conveying pipe 10 away from the absorption tower 8 is connected to an oxidation box 3. The middle part of the oxidation box 3 is fixedly inserted into the middle part of the middle support plate 2 near the right end. The bottom of the oxidation box 3 is fixedly provided with a discharge port. The bottom of the oxidation box 3 is fixedly connected to the upper surface of the base plate 1. The oxidation box 3 is effectively fixed by the base plate 1 and the middle support plate 2 to ensure that the by-products such as ammonium sulfate inside the oxidation box 3 have a certain stability during the oxidation process. The bottom of the oxidation box 3 is fixedly provided with a discharge port to facilitate the collection of by-products.

[0027] Please see Figure 2 and Figure 4 A motor 4 is fixedly installed on the top of the oxidation chamber 3. A first spur gear 6 is fixedly sleeved on the output shaft of the motor 4. A second spur gear 9 is meshed with the first spur gear 6 through teeth on one side of its outer circumference. A feed pipe 5 is fixedly inserted into the middle of the second spur gear 9. Two limiting rings are snapped into the middle of the feed pipe 5 to restrict its position and prevent it from falling downwards during rotation. The limiting rings are located on the inner and outer sides of the top of the oxidation chamber 3. A funnel 7 is fixedly installed on the top of the feed pipe 5. The hopper 7 is connected to the feed pipe 5. The hopper 7 is designed to facilitate the addition of catalyst. The bottom of the feed pipe 5 passes through the top of the oxidation tank 3 and is fixedly installed with a spray box 16. The spray box 16 is fixedly installed with spray holes near the bottom. The spray holes are evenly distributed on the outer circumference of the spray box 16. The diameter of the spray box 16 is smaller than the width of the inner wall of the oxidation tank 3. The spray box 16 rotates with the feed pipe 5 above. Under the action of centrifugal force, the spray box 16 sprays the catalyst evenly into the interior of the oxidation tank 3 through the spray holes at the edge.

[0028] The implementation principle of the sulfur-containing industrial waste gas filtration, desulfurization, and cleaning device in this application embodiment is as follows: During use, the inlet pipe 11 is connected to the industrial gas emission pipe, allowing the industrial waste gas to enter the absorption tower 8. Using ammonia water as the absorbent, the booster pump 14 is started to transport the ammonia water from the ammonia water tank 13 to the interior of the annular spray nozzle 18 via the high-pressure connecting pipe 20. The annular spray nozzle 18 sprays the ammonia water evenly into the interior of the absorption tower 8 through the inner ring spray head, achieving full contact and reaction with the rising sulfur-containing waste gas. Ammonia-based desulfurization has a high desulfurization efficiency, reaching approximately 95%. The gas after sulfurization is completed is discharged through the exhaust pipe at the top. The ammonia water and... The sulfur oxidation reaction produces ammonium sulfite and ammonium bisulfite. The generated ammonium sulfite and ammonium bisulfite flow into the oxidation tank 3 through the conveying pipe 10. The catalyst is poured into the funnel 7, and the feed pipe 5 enters the bottom spray box 16. The motor 4 is started, and through the cooperation of spur gears, the feed pipe 5 and the bottom spray box 16 rotate. Under the action of centrifugal force, the spray box 16 evenly sprinkles the catalyst into the oxidation tank 3, so that the ammonium sulfite and ammonium bisulfite inside can undergo oxidation. After oxidation, ammonium sulfate and other by-products are obtained. The by-products can be used as fertilizer, which has certain economic benefits.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A filter desulfurization cleaning device for industrial waste gas containing sulfur, comprising a base plate (1), characterized in that: The left end of the upper surface of the base plate (1) is fixedly provided with a middle stress, the left end of the upper surface of the middle stress plate (2) is fixedly provided with a support frame (15), the middle position of the top of the support frame (15) is fixedly provided with a booster pump (14), the front end of the booster pump (14) is communicated with a high-pressure connecting pipe (20), the end of the high-pressure connecting pipe (20) away from the booster pump is communicated with a vertical pipe (17) penetrating through the absorption tower (8), the two ends of the vertical pipe (17) are respectively sleeved with a circular ring nozzle (18), the outer side of the circular ring nozzle (18) is fixedly sleeved with a fixed block (19), the end of the fixed block (19) away from the circular ring nozzle (18) is fixedly arranged on the inner wall of the absorption tower (8), and the bottom of the absorption tower (8) is fixedly arranged on the upper surface of the middle stress plate (2) near the left end. The side of the absorption tower (8) near the bottom is communicated with a conveying pipe (10), the end of the conveying pipe (10) away from the absorption tower (8) is communicated with an oxidation box (3), the top of the oxidation box (3) is fixedly provided with a motor (4), the output shaft of the top of the motor (4) is fixedly sleeved with a first spur gear (6), the first spur gear (6) is meshed with a second spur gear (9) through the teeth on one side of the outer circumference, the middle of the second spur gear (9) is fixedly inserted with a feeding pipe (5), and the bottom of the feeding pipe (5) is fixedly provided with a spraying box (16) penetrating through the top of the oxidation box (3).

2. A sulfur-containing industrial waste gas filtration desulfurization cleaning device according to claim 1, characterized in that: The top of the booster pump (14) is fixedly provided with a liquid pipe (12), the end of the liquid pipe (12) away from the booster pump (14) is arranged on the top of an ammonia water tank (13), the bottom of the ammonia water tank (13) is fixedly arranged on the left end of the upper surface of the middle stress plate (2), the number of the ammonia water tank (13) is two, and the top of the two ammonia water tanks (13) is communicated with the top of the booster pump (14) through two same liquid pipes (12).

3. The filter desulfurization cleaning device for industrial waste gas containing sulfur according to claim 1, characterized in that: The middle of the oxidation box (3) is fixedly inserted into the middle of the middle stress plate (2) near the right end, the outer side of the bottom of the oxidation box (3) is fixedly provided with a discharge port, and the bottom of the oxidation box (3) is fixedly connected with the upper surface of the base plate (1).

4. The filter desulfurization cleaning device for industrial waste gas containing sulfur according to claim 1, characterized in that: The spraying box (16) is fixedly provided with spraying holes near the bottom position, the spraying holes are uniformly distributed on the outer circumference of the spraying box (16), and the diameter of the spraying box (16) is smaller than the width of the inner wall of the oxidation box (3).

5. The sulphur-containing industrial waste gas filtering desulphurization cleaning device according to claim 1, characterized in that: The middle of the feeding pipe (5) is clamped with two limiting rings, the limiting rings are located on the inner and outer sides of the top of the oxidation box (3), the top of the feeding pipe (5) is fixedly provided with a hopper (7), and the hopper (7) is communicated with the feeding pipe (5).

6. The sulphur-containing industrial waste gas filtering desulphurization cleaning device according to claim 1, characterized in that: ​ 7. The filter desulfurization cleaning device for industrial waste gas containing sulfur according to claim 1, characterized in that: The number of the circular ring nozzles (18) is three, the three circular ring nozzles (18) are communicated through the vertical pipes (17), the three circular ring nozzles (18) are evenly arranged in the interior of the absorption tower (8) through the fixing blocks (19), and the inner rings of the three circular ring nozzles (18) are all provided with spray heads.

Images