Circulating absorption treatment device for sulfur dioxide tail gas
The circulating desulfurization, filter cleaning, and secondary filtration structure of the sulfur dioxide tail gas recycling and absorption treatment device solves the environmental hazards of sulfur dioxide tail gas and achieves a highly efficient tail gas purification effect.
Patent Information
- Application Number
- CN202423054513.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-11
AI Technical Summary
The emission of sulfur dioxide exhaust gas can harm the environment and requires effective purification to reduce its harm to human health and the environment.
A sulfur dioxide tail gas circulation absorption and treatment device is adopted, which includes components such as desulfurization box, filter box, spray head, fan, dust filter, activated carbon layer and UV lamp. Through multiple steps of circulation desulfurization, filter cleaning and secondary filtration, the sulfur dioxide tail gas is purified.
It achieves the functions of cyclic desulfurization, filter cleaning and secondary filtration, effectively removing sulfur dioxide, generating non-toxic elemental sulfur, and purifying exhaust gas.
Smart Images
Figure CN223530202U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sulfur dioxide treatment technology, specifically to a sulfur dioxide tail gas recycling absorption treatment device. Background Technology
[0002] Sulfur dioxide exhaust gas typically refers to waste gas emitted from industrial production, chemical industry, transportation, and other fields. It contains a relatively high amount of sulfur dioxide, which is a toxic gas. When its emissions reach a certain level, it can harm human health and the environment. When sulfur dioxide exhaust gas is released into the air, it can form acid rain, which can damage plants, soil, and groundwater.
[0003] To reduce the environmental harm caused by sulfur dioxide emissions, the sulfur dioxide-containing exhaust gas needs to be treated before emission, including dust removal and desulfurization, to purify the gas. Therefore, we propose a sulfur dioxide exhaust gas recycling and absorption treatment device to address the aforementioned problems. Utility Model Content
[0004] The purpose of this invention is to provide a sulfur dioxide tail gas recycling and absorption treatment device to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a sulfur dioxide tail gas circulation absorption and treatment device, comprising a desulfurization box and a filter box. An air inlet is provided at the top of the desulfurization box. A liquid delivery pipe is connected to the left side of the desulfurization box, and a spray head is installed at the bottom of the liquid delivery pipe. A water collection tank is installed at the bottom of the interior of the desulfurization box. A liquid storage tank is installed at the front end of the desulfurization box, and a liquid pump is installed at the front end of the liquid storage tank. A circulation pipe is connected to the right side of the desulfurization box, and a regulating valve and a fan are installed inside the circulation pipe. A circulation chamber is provided inside the filter box, and a circulation port is installed at the top of the circulation chamber.
[0006] As a further technical solution of this utility model, the circulation pipe is inserted into the top of the filter box and connected to the circulation port at the top of the circulation chamber inside the desulfurization box. The fan is installed inside the circulation pipe, and the circulation chamber is connected to the desulfurization box through the circulation pipe.
[0007] As a further technical solution of this utility model, the spray head is installed at the bottom end of the infusion pipe inserted into the desulfurization tank, the storage tank is connected to the desulfurization tank through a pump and an infusion pipe, and the water collection tank is installed at the bottom end of the desulfurization tank.
[0008] As a further technical solution of this utility model, a dust filter screen is installed on the left side inside the filter box, a cleaning brush is in contact with the right side of the dust filter screen, sliding screws are inserted at the front and rear ends of the cleaning brush, a rotating motor is installed on the top left side of the filter box, and a dust removal guide plate is provided at the bottom left side of the filter box.
[0009] As a further technical solution of this utility model, the rotating motor is installed at the top of the filter box and connected to the sliding screw inside the filter box for rotation. The sliding screw passes through the inside of the cleaning brush. The rotation of the sliding screw drives the cleaning brush to slide outside the sliding screw. The sliding screw drives the cleaning brush to move up and down and contact the right side of the dust filter.
[0010] As a further technical solution of this utility model, a support base is installed at the bottom of the filter box, an exhaust port is provided on the right side of the filter box, an exhaust pipe is connected to the right side of the exhaust port, and an exhaust fan is connected to the front end of the exhaust pipe.
[0011] As a further technical solution of this utility model, the filter box is provided with a filter chamber inside, the filter chamber is filled with an activated carbon layer and a solid desulfurization layer, and a catalytic chamber is provided on the right side inside the filter box, and a UV lamp is installed inside the catalytic chamber.
[0012] As a further technical solution of this utility model, the UV lamp is installed inside the catalytic chamber set inside the filter box, and the activated carbon layer and the solid desulfurization layer are sequentially installed inside the filter chamber set inside the filter box. The filter chamber and the catalytic chamber are connected in the filter box.
[0013] Compared with the prior art, the beneficial effects of this utility model are: this sulfur dioxide tail gas circulation absorption and treatment device not only realizes the circulation desulfurization function and the filter cleaning function, but also realizes the secondary filtration function;
[0014] (1) By setting up a circulating desulfurization structure, the present invention is beneficial as follows: the tail gas containing sulfur dioxide enters the interior of the desulfurization box through the air inlet, and then the lime slurry inside the storage tank is transported to the interior of the desulfurization box through the liquid delivery pipe by the liquid pump. The lime slurry is sprayed out by the spray head at the bottom of the liquid delivery pipe and comes into contact with the tail gas inside the desulfurization box to desulfurize the tail gas. The desulfurization products are a mixture of CaSO4, CaSO3, unreacted CaO and fly ash. Part of it will enter the water collection tank inside the desulfurization box, and part of it will come into contact with the dust filter screen as the tail gas flows. The tail gas that enters the circulating chamber is then desulfurized by starting the fan and regulating valve inside the circulating pipe and then entering the circulating pipe through the circulating port. The tail gas then comes into contact with the lime slurry sprayed by the spray head inside the desulfurization box to circulate and desulfurize, thereby realizing the circulating desulfurization function.
[0015] (2) By setting up a filter cleaning structure, the present invention is beneficial in that: when in use, the fly ash and mixture in the exhaust gas will come into contact with the dust filter inside the filter box with the air flow, and adhere to the left side of the dust filter, affecting the subsequent smoke and dust filtration and exhaust gas purification and conveying. When in use, the rotating motor is started to drive the sliding screw inside the filter box to rotate, and the cleaning brush moves up and down outside the sliding screw to clean the dust filter, so that the dust on the dust filter is swept into the bottom of the filter box. Then, by opening the dust removal guide plate at the bottom left side of the filter box, the dust and other dust are cleaned and swept, thereby realizing the filter cleaning function.
[0016] (3) By setting a secondary filtration structure, the present invention is beneficial in that: after circulating desulfurization, after closing the regulating valve inside the circulating pipe, the desulfurized tail gas enters the filter chamber and undergoes secondary desulfurization and impurity adsorption with the solid desulfurization layer and activated carbon layer inside the filter chamber. The filter chamber can be a solid flue gas desulfurizing agent. The tail gas then enters the catalytic chamber through the filter chamber and comes into contact with the UV lamp, allowing the sulfur compounds to decompose. The generated elemental sulfur is non-toxic and is discharged from the exhaust port, thus realizing the secondary filtration function. Attached Figure Description
[0017] Figure 1 This is a front view structural diagram of the present utility model;
[0018] Figure 2 This is a schematic diagram of the rear cross-sectional structure of this utility model;
[0019] Figure 3 This is a partial cross-sectional structural diagram of the desulfurization box and filter box of this utility model;
[0020] Figure 4 This is an enlarged cross-sectional schematic diagram of the filter box and dust filter screen of this utility model.
[0021] In the diagram: 1. Infusion pipe; 2. Air inlet; 3. Desulfurization box; 4. Storage tank; 5. Pump; 6. Circulation pipe; 7. Regulating valve; 8. Filter box; 9. Support base; 10. Exhaust port; 11. Exhaust fan; 12. Discharge pipe; 13. Catalytic chamber; 14. UV lamp; 15. Activated carbon layer; 16. Solid desulfurization layer; 17. Filter chamber; 18. Circulation chamber; 19. Circulation port; 20. Dust filter; 21. Fan; 22. Spray head; 23. Water collection tank; 24. Rotary motor; 25. Cleaning brush; 26. Sliding screw; 27. Dust removal guide plate. 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 1-4 An embodiment of this utility model provides a sulfur dioxide tail gas circulation absorption and treatment device, including a desulfurization box 3 and a filter box 8. The top of the desulfurization box 3 is provided with an air inlet 2. The left side of the desulfurization box 3 is connected to a liquid delivery pipe 1. A spray head 22 is installed at the bottom of the liquid delivery pipe 1. A water collection tank 23 is installed at the bottom of the inside of the desulfurization box 3. A liquid storage tank 4 is installed at the front of the desulfurization box 3. A liquid pump 5 is installed at the front of the liquid storage tank 4. A circulation pipe 6 is connected to the right side of the desulfurization box 3. A regulating valve 7 is installed inside the circulation pipe 6. A fan 21 is installed inside the circulation pipe 6. A circulation chamber 18 is provided inside the filter box 8. A circulation port 19 is installed at the top of the circulation chamber 18.
[0024] The circulation pipe 6 is inserted into the top of the filter box 8 and connected to the circulation port 19 at the top of the circulation chamber 18 inside the desulfurization box 3. The fan 21 is installed inside the circulation pipe 6. The circulation chamber 18 is connected to the desulfurization box 3 through the circulation pipe 6. The spray head 22 is installed at the bottom of the liquid delivery pipe 1 inserted into the desulfurization box 3. The liquid storage tank 4 is connected to the desulfurization box 3 through the liquid pump 5 and the liquid delivery pipe 1. The water collection tank 23 is installed at the bottom of the desulfurization box 3.
[0025] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, by setting up a circulating desulfurization structure, the tail gas containing sulfur dioxide enters the desulfurization tank 3 through the air inlet 2. Then, the lime slurry inside the storage tank 4 is transported to the desulfurization tank 3 by the liquid pump 5 through the liquid delivery pipe 1. The lime slurry is sprayed out by the spray head 22 at the bottom of the liquid delivery pipe 1 and comes into contact with the tail gas inside the desulfurization tank 3 to desulfurize the tail gas. The desulfurization products are a mixture of CaSO4, CaSO3, unreacted CaO and fly ash. Part of the product goes into the water collection tank 23 inside the desulfurization tank 3, and part of the product comes into contact with the dust filter screen 20 as the tail gas flows. The tail gas that enters the circulation chamber 18 is then circulated by activating the fan 21 and regulating valve 7 inside the circulation pipe 6, and then circulated into the circulation pipe 6 through the circulation port 19. The tail gas then comes into contact with the lime slurry sprayed by the spray head 22 inside the desulfurization tank 3 for circulating desulfurization, thus realizing the circulating desulfurization function.
[0026] A dust filter 20 is installed on the left side inside the filter box 8. A cleaning brush 25 is in contact with the right side of the dust filter 20. Sliding screws 26 are inserted at the front and rear ends of the cleaning brush 25. A rotating motor 24 is installed on the top left side of the filter box 8. A dust removal guide plate 27 is provided at the bottom left side of the filter box 8.
[0027] The rotating motor 24 is installed at the top of the filter box 8 and is connected to the sliding screw 26 inside the filter box 8. The sliding screw 26 passes through the inside of the cleaning brush 25. The rotation of the sliding screw 26 causes the cleaning brush 25 to slide outside the sliding screw 26. The sliding screw 26 causes the cleaning brush 25 to move up and down and contact the right side of the dust filter 20.
[0028] Specifically, such as Figure 1 and Figure 4 As shown, by setting up a filter cleaning structure, during use, fly ash and mixtures in the exhaust gas will come into contact with the dust filter 20 inside the filter box 8 as the air flows, adhering to the left side of the dust filter 20 and affecting subsequent smoke filtration and exhaust gas purification and conveying. During use, by starting the rotating motor 24, the rotating motor 24 drives the sliding screw 26 inside the filter box 8 to rotate, allowing the cleaning brush 25 to move up and down outside the sliding screw 26 to clean the dust filter 20, allowing the dust on the dust filter 20 to be swept into the bottom of the filter box 8. Then, by opening the dust removal guide plate 27 at the bottom left side of the filter box 8, the dust and other debris are cleaned, thus realizing the filter cleaning function.
[0029] The filter box 8 has a filter chamber 17 inside, which is filled with an activated carbon layer 15 and a solid desulfurization layer 16. The filter box 8 has a catalytic chamber 13 on the right side inside, and a UV lamp 14 is installed inside the catalytic chamber 13.
[0030] UV lamp 14 is installed inside the catalytic chamber 13 inside the filter box 8. Activated carbon layer 15 and solid desulfurization layer 16 are sequentially installed inside the filter chamber 17 inside the filter box 8. Filter chamber 17 and catalytic chamber 13 are connected in the filter box 8.
[0031] Specifically, such as Figure 1 and Figure 2 As shown, by setting a secondary filtration structure, after circulating desulfurization, the regulating valve 7 inside the circulation pipe 6 is closed, allowing the desulfurized tail gas to enter the filter chamber 17 and undergo secondary desulfurization and impurity adsorption with the solid desulfurization layer 16 and activated carbon layer 15 inside the filter chamber 17. The filter chamber 17 can be a solid flue gas desulfurizing agent. Afterward, the tail gas enters the catalytic chamber 13 through the filter chamber 17 and comes into contact with the UV lamp 14, allowing the sulfur compounds to decompose. The generated elemental sulfur is non-toxic and is discharged from the exhaust port 10, thus realizing the secondary filtration function.
[0032] Working Principle: In this invention, exhaust gas containing sulfur dioxide enters the desulfurization tank 3 through inlet 2. Then, a pump 5 pumps lime slurry from storage tank 4 into the desulfurization tank 3 via delivery pipe 1. The slurry is sprayed from nozzles 22 at the bottom of delivery pipe 1, contacting the exhaust gas inside the desulfurization tank 3 to desulfurize it. The desulfurization products are a mixture of CaSO4, CaSO3, unreacted CaO, and fly ash. Part of this mixture goes into the water collection tank 23 inside the desulfurization tank 3, while the rest flows through the dust filter 20 and is filtered. After entering the circulation chamber 18, the exhaust gas is circulated through the circulation port 19 into the circulation pipe 6 by activating the fan 21 and regulating valve 7 inside the circulation pipe 6. The exhaust gas then circulates and contacts the lime slurry sprayed from the nozzles 22 inside the desulfurization tank 3 for desulfurization. Finally, the regulating valve 7 inside the circulation pipe 6 is closed. Afterwards, the desulfurized exhaust gas enters the filter chamber 17 and undergoes secondary desulfurization and impurity adsorption with the solid desulfurization layer 16 and activated carbon layer 15 inside the filter chamber 17. The filter chamber 17 can be a solid flue gas desulfurizing agent. The exhaust gas then enters the catalytic chamber 13 after passing through the filter chamber 17 and comes into contact with the UV lamp 14, causing the sulfur compounds to decompose. The generated elemental sulfur is non-toxic. Then, the exhaust pipe 12 is activated to draw the purified exhaust gas discharged from the exhaust port 10 inside the filter box 8 into the exhaust fan 11 and then discharge it. The dust removal guide plate 27 at the bottom left side of the filter box 8 is opened. The rotating motor 24 is activated to drive the sliding screw 26 inside the filter box 8 to rotate, allowing the cleaning brush 25 to move up and down outside the sliding screw 26 to clean the dust filter screen 20. The dust on the dust filter screen 20 is swept into the bottom of the filter box 8 and discharged through the groove at the bottom of the filter box 8.
[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A sulfur dioxide tail gas recirculation absorption and treatment device, comprising a desulfurization box (3) and a filter box (8), characterized in that: The desulfurization box (3) is provided with an air inlet (2) at the top. A liquid delivery pipe (1) is connected to the left side of the desulfurization box (3). A spray head (22) is installed at the bottom of the liquid delivery pipe (1). A water collection tank (23) is installed at the bottom inside the desulfurization box (3). A liquid storage tank (4) is installed at the front end of the desulfurization box (3). A liquid pump (5) is installed at the front end of the liquid storage tank (4). A circulation pipe (6) is connected to the right side of the desulfurization box (3). A regulating valve (7) is installed inside the circulation pipe (6). A fan (21) is installed inside the circulation pipe (6). A circulation chamber (18) is provided inside the filter box (8). A circulation port (19) is installed at the top of the circulation chamber (18).
2. The sulfur dioxide tail gas recycling absorption and treatment device according to claim 1, characterized in that: The circulation pipe (6) is inserted into the top of the filter box (8) and communicates with the circulation port (19) at the top of the circulation chamber (18) inside the desulfurization box (3). The fan (21) is installed inside the circulation pipe (6). The circulation chamber (18) is connected to the desulfurization box (3) through the circulation pipe (6).
3. The sulfur dioxide tail gas recycling absorption and treatment device according to claim 1, characterized in that: The spray head (22) is installed at the bottom of the infusion pipe (1) inserted into the desulfurization tank (3). The storage tank (4) is connected to the desulfurization tank (3) through the pump (5) and the infusion pipe (1). The water collection tank (23) is installed at the bottom of the desulfurization tank (3).
4. The sulfur dioxide tail gas recycling absorption and treatment device according to claim 1, characterized in that: A dust filter screen (20) is installed on the left side inside the filter box (8). A cleaning brush (25) is in contact with the right side of the dust filter screen (20). A sliding screw (26) is inserted at the front and rear ends of the cleaning brush (25). A rotating motor (24) is installed on the left side of the top of the filter box (8). A dust removal guide plate (27) is provided at the bottom left side of the filter box (8).
5. The sulfur dioxide tail gas recycling absorption and treatment device according to claim 4, characterized in that: The rotating motor (24) is installed at the top of the filter box (8) and connected to the sliding screw (26) inside the filter box (8) for rotation. The sliding screw (26) passes through the interior of the cleaning brush (25). The rotation of the sliding screw (26) drives the cleaning brush (25) to slide outside the sliding screw (26). The sliding screw (26) drives the cleaning brush (25) to move up and down and contact the right side of the dust filter (20).
6. The sulfur dioxide tail gas recycling absorption and treatment device according to claim 1, characterized in that: The bottom of the filter box (8) is equipped with a support base (9), and an exhaust port (10) is provided on the right side of the filter box (8). An exhaust pipe (12) is connected to the right side of the exhaust port (10), and an exhaust fan (11) is connected to the front end of the exhaust pipe (12).
7. The sulfur dioxide tail gas recycling absorption and treatment device according to claim 6, characterized in that: The filter box (8) is provided with a filter chamber (17) inside, and the filter chamber (17) is filled with an activated carbon layer (15) and a solid desulfurization layer (16). The filter box (8) is provided with a catalyst chamber (13) on the right side inside, and a UV lamp (14) is installed inside the catalyst chamber (13).
8. The sulfur dioxide tail gas recycling absorption and treatment device according to claim 7, characterized in that: The UV lamp (14) is installed inside the catalytic chamber (13) inside the filter box (8). The activated carbon layer (15) and the solid desulfurization layer (16) are installed in sequence inside the filter chamber (17) inside the filter box (8). The filter chamber (17) and the catalytic chamber (13) are connected in the filter box (8).