Desulfurizing tower for wet desulphurization

Abstract

The utility model provides a desulfurization tower for wet desulfurization, which comprises a tower body, a dust removal plate fixedly mounted in the tower body, a spraying assembly arranged in the tower body, a gas distribution plate fixedly mounted in the tower body, a demister fixedly mounted in the tower body, and a guide plate fixedly mounted in the tower body, and a slag discharging opening is formed in the bottom of the tower body. According to the desulfurization tower for wet desulfurization, the gas-liquid contact effect is enhanced and the desulfurization efficiency is improved through the combination of the multiple layers of spraying assemblies and the gas distribution plate, the vent holes in the gas distribution plate are inclined, it is ensured that a desulfurization agent is evenly distributed in the tower, meanwhile, liquid drop entrainment in tail gas can be effectively reduced through the arranged demister, and the collection tank is arranged, so that the desulfurization efficiency is improved. According to the device, by-products such as gypsum generated in the desulfurization process can be effectively separated and recycled, the waste discharge and treatment cost is reduced, the stability and safety of the device in the long-term operation process are guaranteed, and the overall practicability is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of desulfurization equipment, and in particular to a desulfurization tower for wet desulfurization. Background Technology

[0002] With increasingly stringent environmental protection requirements, the removal of pollutants such as sulfur dioxide from industrial waste gas is of paramount importance. Wet desulfurization is one of the most widely used desulfurization technologies. As the core equipment of the wet desulfurization process, the performance of the desulfurization tower directly affects the desulfurization efficiency and operating costs. In today's industrial production, especially in industries such as power, steel, and chemicals, the combustion of fossil fuels or various chemical reactions produce a large amount of sulfur-containing flue gas. The emission of sulfur dioxide and other sulfides is one of the key factors leading to environmental problems such as acid rain and air pollution, causing serious harm to ecological balance, human health, and buildings. Therefore, a desulfurization tower for wet desulfurization is particularly needed.

[0003] However, existing desulfurization towers suffer from insufficient gas-liquid contact and low desulfurizing agent utilization. During the reaction process between the desulfurizing agent and flue gas, the gas-liquid contact is often insufficient, making it difficult to further improve desulfurization efficiency and meet increasingly stringent environmental emission standards. The lack of multi-layer spray devices reduces the gas-liquid contact effect and lowers desulfurization efficiency. Furthermore, some valuable byproducts generated during the desulfurization process, such as high-quality gypsum, cannot be fully and effectively recovered and utilized, resulting in resource waste and increasing the pressure of waste disposal. This not only reduces equipment operating efficiency and increases energy consumption but also requires frequent shutdowns for cleaning and maintenance, seriously affecting the continuity of production and increasing the company's operating costs. Utility Model Content

[0004] The purpose of this invention is to provide a wet desulfurization tower to address the problems mentioned in the background art, such as insufficient gas-liquid contact, low desulfurizing agent utilization, insufficient gas-liquid contact during the reaction process between the desulfurizing agent and flue gas, making it difficult to further improve desulfurization efficiency and meet increasingly stringent environmental emission standards. Furthermore, the lack of a multi-layer spray device reduces the gas-liquid contact effect and lowers desulfurization efficiency. Additionally, some valuable byproducts generated during the desulfurization process, such as high-quality gypsum, are not fully and effectively recovered and utilized, resulting in resource waste and increased pressure on waste disposal. This not only reduces equipment operating efficiency and increases energy consumption but also requires frequent shutdowns for cleaning and maintenance, severely impacting production continuity and increasing enterprise operating costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a desulfurization tower for wet desulfurization, comprising a tower body, an air inlet on the outer side of the tower body, an inlet / outlet liquid valve fixedly installed on the outer side of the tower body, a knob fixedly installed on the top of the inlet / outlet liquid valve, a dust removal plate fixedly installed inside the tower body, an exhaust hole on the top of the dust removal plate, a brush fixedly installed on the bottom of the dust removal plate, a spray assembly inside the tower body, a gas distribution plate fixedly installed inside the tower body, a vent hole on the top of the gas distribution plate, a demister fixedly installed inside the tower body, a guide plate fixedly installed inside the tower body, a slag discharge port at the bottom of the tower body, a collection trough at the bottom of the tower body, a handle fixedly installed on the outer side of the collection trough, and an exhaust port at the top of the tower body.

[0006] Preferably, the inlet and outlet valves and knobs are provided in three identical sets, and the three sets of inlet and outlet valves and knobs are arranged in a ring about the vertical center line of the tower body, and the included angle between every two sets of inlet and outlet valves and knobs is 60°.

[0007] Preferably, the horizontal cross-section of the brush is annular, and the vent hole does not contact the brush.

[0008] Preferably, the spray assembly includes a spray pipe, a spray head, spray holes, a three-way connecting pipe, a connecting pipe, a slurry circulation pump, and a circulation pipe. The spray pipe is installed inside the tower body. A spray head is fixedly installed at the bottom of the spray pipe. A spray hole is opened at the bottom of the spray head. A three-way connecting pipe is connected through the outside of the spray pipe. A connecting pipe is connected through the end of the three-way connecting pipe away from the spray pipe. A slurry circulation pump is fixedly installed at the end of the connecting pipe away from the three-way connecting pipe. A circulation pipe is connected through the outside of the slurry circulation pump. The end of the circulation pipe away from the slurry circulation pump is connected through the tower body. The spray assembly is provided in three sets, and the lengths of the connecting pipes in the three sets are different.

[0009] Preferably, there are multiple identical spray pipes, and the multiple spray pipes are connected to the three-head connecting pipe. There are multiple identical spray heads, and the multiple spray heads are equidistantly distributed at the bottom of the spray head. The bottom of the spray head is evenly provided with multiple spray holes.

[0010] Preferably, the gas distribution plate is provided in two identical sets, and each set of the gas distribution plate is located between the two sets of spray components, and the vertical cross-section of the vent hole is inclined.

[0011] Preferably, the dust removal plate is located below the spray assembly, the demister is located above the spray assembly, and the guide plate has a 45° inclined structure.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: This wet desulfurization tower, through the combination of multi-layer spray components and a gas distribution plate, greatly enhances the gas-liquid contact effect, improves desulfurization efficiency, and the inclined vent holes on the gas distribution plate ensure uniform distribution of the desulfurizing agent within the tower, avoiding localized excessively high or low concentrations. This guarantees the stability and efficiency of the entire desulfurization process, further improving the overall desulfurization reaction effect. It also increases the contact area and contact time between the desulfurizing agent and the sulfur-containing flue gas. During the spraying process, the desulfurizing agent can fully react chemically with sulfur dioxide and other sulfides in the flue gas, making... The desulfurization efficiency is significantly improved, effectively reducing the sulfur content in flue gas to meet stricter environmental emission standards and reducing air pollution. The installed demister effectively reduces liquid droplet entrainment in the exhaust gas, and the collection tank effectively separates and recovers byproducts such as gypsum generated during the desulfurization process. The recovered gypsum can be further processed and utilized in building materials and other fields, achieving resource recycling, improving the overall efficiency of the wet desulfurization process, reducing waste emissions and treatment costs, ensuring the stability and safety of the equipment during long-term operation, and enhancing its overall practicality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0015] Figure 3 This is a schematic diagram of the bottom structure of the tower body of this utility model;

[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the tower body of this utility model;

[0017] Figure 5 This is a schematic diagram of the internal structure of the tower body of this utility model;

[0018] Figure 6 This is a schematic diagram of the disassembled structure of the spray assembly of this utility model;

[0019] Figure 7 This is a schematic cross-sectional view of the gas distribution plate of this utility model.

[0020] Figure 8 This is a schematic diagram of the dust removal plate structure of this utility model.

[0021] In the diagram: 1. Tower body; 2. Air inlet; 3. Liquid inlet / outlet valve; 4. Knob; 5. Dust collector plate; 6. Exhaust vent; 7. Brush; 8. Spray assembly; 801. Spray pipe; 802. Spray head; 803. Spray hole; 804. Three-way connecting pipe; 805. Connecting pipe; 806. Slurry circulation pump; 807. Circulation pipe; 9. Gas distribution plate; 10. Vent hole; 11. Demister; 12. Guide plate; 13. Slag discharge port; 14. Collection tank; 15. Handle; 16. Exhaust vent. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-8 This utility model provides a technical solution: a desulfurization tower for wet desulfurization, including a tower body 1, an air inlet 2 on the outer side of the tower body 1, an inlet / outlet valve 3 fixedly installed on the outer side of the tower body 1, a knob 4 fixedly installed on the top of the inlet / outlet valve 3, a dust removal plate 5 fixedly installed inside the tower body 1, an exhaust hole 6 on the top of the dust removal plate 5, a brush 7 fixedly installed on the bottom of the dust removal plate 5, a spray assembly 8 inside the tower body 1, a gas distribution plate 9 fixedly installed inside the tower body 1, a vent hole 10 on the top of the gas distribution plate 9, a demister 11 fixedly installed inside the tower body 1, a guide plate 12 fixedly installed inside the tower body 1, a slag discharge port 13 at the bottom of the tower body 1, a collection trough 14 at the bottom of the tower body 1, a handle 15 fixedly installed on the outer side of the collection trough 14, and an exhaust port 16 at the top of the tower body 1.

[0024] Furthermore, the inlet and outlet valves 3 and knobs 4 are provided in three identical sets. The three sets of inlet and outlet valves 3 and knobs 4 are arranged in a ring about the vertical center line of the tower body 1, and the included angle between every two sets of inlet and outlet valves 3 and knobs 4 is 60°. By setting three identical sets of inlet and outlet valves 3 and knobs 4, the inlet and outlet of slurry in the slurry tank are accelerated, the working process is accelerated, and the slurry in the slurry tank can be quickly replaced, saving working time and improving working efficiency.

[0025] Furthermore, the horizontal cross-section of the brush 7 is annular, and the vent 6 does not contact the brush 7. By setting the horizontal cross-section of the brush 7 to be annular, the brush 7 can be better fixed to the bottom of the dust removal plate 5, while the vent 6 will not come into contact with it, thus avoiding the problem of the vent being easily blocked by liquid.

[0026] Furthermore, the spray assembly 8 includes a spray pipe 801, a spray head 802, a spray hole 803, a three-way connecting pipe 804, a connecting pipe 805, a slurry circulation pump 806, and a circulation pipe 807. The spray pipe 801 is installed inside the tower body 1. A spray head 802 is fixedly installed at the bottom of the spray pipe 801. A spray hole 803 is opened at the bottom of the spray head 802. A three-way connecting pipe 804 is connected through the outside of the spray pipe 801. A connecting pipe 805 is connected through the end of the three-way connecting pipe 804 away from the spray pipe 801. A slurry circulation pump 806 is fixedly installed at the end of the connecting pipe 805 away from the three-way connecting pipe 804. The slurry circulates... A circulation pipe 807 is connected to the outside of the ring pump 806. The end of the circulation pipe 807 away from the slurry circulation pump 806 is connected to the tower body 1. Three sets of spray components 8 are provided, and the lengths of the three sets of connecting pipes 805 are not the same. By setting up the spray components 8, the gas-liquid contact effect is enhanced, the desulfurization efficiency is improved, and the contact area and contact time between the desulfurizing agent and the sulfur-containing flue gas are increased. During the spraying process, the desulfurizing agent can fully react with sulfur dioxide and other sulfides in the flue gas, which significantly improves the desulfurization efficiency and can effectively reduce the sulfur content in the flue gas, so that it meets the stricter environmental emission standards and reduces pollution to the atmospheric environment.

[0027] Furthermore, multiple identical spray pipes 801 are provided, and these multiple spray pipes 801 are connected to the three-way connecting pipe 804. Multiple identical spray heads 802 are provided, and the multiple spray heads 802 are equidistantly distributed at the bottom of the spray head 802. Multiple spray holes 803 are evenly opened at the bottom of the spray head 802. By setting multiple spray pipes 801, the gas-liquid contact effect is greatly enhanced, and the desulfurization efficiency is improved. During the spraying process, the desulfurizing agent can fully react chemically with sulfur dioxide and other sulfides in the flue gas, which significantly improves the desulfurization efficiency and can effectively reduce the sulfur content in the flue gas, so that it meets more stringent environmental emission standards and reduces pollution to the atmospheric environment.

[0028] Furthermore, two identical sets of gas distribution plates 9 are provided, with each set of gas distribution plates 9 located between two sets of spray components 8. The vertical cross-section of the vent 10 is inclined. By setting two sets of gas distribution plates 9 and the vertical cross-section of the vent 10 is inclined, the desulfurizing agent is ensured to be evenly distributed in the tower, avoiding situations where the local concentration is too high or too low. This ensures the stability and efficiency of the entire desulfurization process, further improves the overall effect of the desulfurization reaction, and increases the contact area and contact time between the desulfurizing agent and the sulfur-containing flue gas.

[0029] Furthermore, the dust removal plate 5 is located below the spray assembly 8, the demister 11 is located above the spray assembly 8, and the guide plate 12 has a 45° inclined structure. By setting the dust removal plate 5, dust in the flue gas can be effectively removed. At the same time, the non-contact brushes avoid the problem of the air holes being easily blocked by liquid, so that the upward movement of the flue gas is not affected. The demister 11 can effectively reduce the entrainment of liquid droplets in the exhaust gas.

[0030] Working Principle: Before operation, staff first inspect the internal and external environment of the entire device to ensure a good environment inside and outside the tower body 1, thus guaranteeing the health and safety of the staff. Dust-laden gas first enters the tower body 1 through the air inlet 2. At this point, the gas flow rate is relatively fast and unevenly distributed. When the gas encounters the dust removal plate 5, due to the blocking and filtering effect of the dust removal plate 5, larger dust particles are adsorbed onto the surface of the dust removal plate 5 due to inertial collision, achieving preliminary coarse purification of the gas and reducing the load on subsequent processing. Then, the staff starts the three sets of slurry circulation pumps 806 to begin operation. The gas, after preliminary dust removal, continues to rise and reaches the gas distribution plate 9. The vents 10 on the gas distribution plate 9 evenly disperse the gas. Meanwhile, the inclined structure of the vent 10 ensures that the desulfurizing agent is evenly distributed within the tower, avoiding local concentrations that are too high or too low. This guarantees the stability and efficiency of the entire desulfurization process, further improving the overall effect of the desulfurization reaction. It also increases the contact area and contact time between the desulfurizing agent and the sulfur-containing flue gas, allowing the gas to enter the subsequent treatment area with a relatively stable flow rate and uniform distribution. This ensures that the gas can fully and evenly contact the slurry sprayed from the spray assembly 8. The slurry is then transported to the spray pipe 801 via the circulation pipe 807 through the slurry circulation pump 806. Under pressure, the slurry is sprayed out in a mist from the spray holes 803 of the spray heads 802 at the bottom of the spray pipe 801. Numerous spray heads 802 interact with the evenly distributed gas... The interweaving of the spray pipes creates a large gas-liquid contact area. Simultaneously, because the three sets of spray pipes 801 are divided into three layers, and each set of spray pipes 801 is separated by a gas distribution plate 9, the dust particles in the gas collide and agglomerate with the effective components in the spray slurry, undergoing physicochemical reactions. The dust is captured by the slurry and gradually falls to the collection tank 14 under gravity, separating and recovering byproducts such as gypsum generated during the desulfurization process. The recovered gypsum can be further processed and utilized in building materials and other fields, achieving resource recycling, improving the overall efficiency of the entire wet desulfurization process, reducing waste emissions and treatment costs, and preventing the purified gas from carrying excessive liquid droplets. A demister 11 is installed along the gas rising path to prevent excessive liquid droplets from being discharged. Utilizing its unique structure and materials, the gas droplets are intercepted, collected, and returned to the tower as they pass through, ensuring that the discharged gas is as dry and pure as possible. Finally, it is discharged into the atmosphere through exhaust port 16. The inlet and outlet valves 3 facilitate operators in replenishing, replacing, or discharging treated waste residue from the tower's slurry. Knob 4 allows adjustment and control of slurry operating parameters to adapt to purification needs under different operating conditions. The collection tank 14 temporarily stores dust-laden slurry; when it accumulates to a certain level, the waste residue can be discharged through the slag discharge port 13 for further processing. The entire process forms a complete and efficient gas purification cycle. Operation is simple and convenient. At this point, the operator stops the slurry circulation pump 806, completing the entire operation process.Finally, the staff conducted a final inspection and cleaning of the entire equipment to ensure that the desulfurization tower was always in optimal operating condition, reducing the risk of human error and guaranteeing the stable and reliable operation of the entire desulfurization system.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A desulfurization tower for wet desulfurization, comprising a tower body (1), characterized in that: An air inlet (2) is provided on the outer side of the tower body (1). An inlet / outlet valve (3) is fixedly installed on the outer side of the tower body (1). A knob (4) is fixedly installed on the top of the inlet / outlet valve (3). A dust removal plate (5) is fixedly installed inside the tower body (1). An exhaust hole (6) is provided on the top of the dust removal plate (5). A brush (7) is fixedly installed on the bottom of the dust removal plate (5). A spray assembly (8) is provided inside the tower body (1). A spray assembly (8) is fixedly installed inside the tower body (1). There is a gas distribution plate (9), the top of the gas distribution plate (9) is provided with a ventilation hole (10), a demister (11) is fixedly installed inside the tower body (1), a guide plate (12) is fixedly installed inside the tower body (1), a slag discharge port (13) is provided at the bottom of the tower body (1), a collection trough (14) is provided at the bottom of the tower body (1), a handle (15) is fixedly installed on the outside of the collection trough (14), and an exhaust port (16) is provided at the top of the tower body (1).

2. The desulfurization tower for wet desulfurization according to claim 1, characterized in that: The inlet and outlet valves (3) and knobs (4) are provided in three identical sets. The three sets of inlet and outlet valves (3) and knobs (4) are arranged in a ring about the vertical center line of the tower body (1), and the included angle between each two sets of inlet and outlet valves (3) and knobs (4) is 60°.

3. The desulfurization tower for wet desulfurization according to claim 1, characterized in that: The horizontal cross-section of the brush (7) is annular, and the vent (6) does not contact the brush (7).

4. The desulfurization tower for wet desulfurization according to claim 1, characterized in that: The spray assembly (8) includes a spray pipe (801), a spray head (802), a spray hole (803), a three-way connecting pipe (804), a connecting pipe (805), a slurry circulation pump (806), and a circulation pipe (807). The spray pipe (801) is installed inside the tower body (1). The spray head (802) is fixedly installed at the bottom of the spray pipe (801). The spray hole (803) is opened at the bottom of the spray head (802). The three-way connecting pipe (804) is connected through the outside of the spray pipe (801). The end of the three-head connecting pipe (804) away from the spray pipe (801) is connected to a connecting pipe (805). The end of the connecting pipe (805) away from the three-head connecting pipe (804) is fixedly installed with a slurry circulation pump (806). The outside of the slurry circulation pump (806) is connected to a circulation pipe (807). The end of the circulation pipe (807) away from the slurry circulation pump (806) is connected to the tower body (1). The spray assembly (8) is provided with three sets, and the lengths of the three sets of connecting pipes (805) are not the same.

5. The desulfurization tower for wet desulfurization according to claim 4, characterized in that: The spray pipes (801) are provided in multiple identical manner, and the multiple spray pipes (801) are connected to the three-head connecting pipe (804). The spray heads (802) are provided in multiple identical manner, and the multiple spray heads (802) are located at equal intervals at the bottom of the spray head (802). The bottom of the spray head (802) is uniformly provided with multiple spray holes (803).

6. The desulfurization tower for wet desulfurization according to claim 1, characterized in that: The gas distribution plate (9) is provided in two identical sets, and each set of the gas distribution plate (9) is located between two sets of spray components (8), and the vertical cross-section of the vent (10) is inclined.

7. The desulfurization tower for wet desulfurization according to claim 1, characterized in that: The dust removal plate (5) is located below the spray assembly (8), the demister (11) is located above the spray assembly (8), and the guide plate (12) has a 45° inclined structure.

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