Flue gas deacidification and dust removal device

Abstract

The utility model discloses a flue gas deacidification and dust removal device, which relates to the technical field of flue gas dust removal devices and comprises a first support and a second support, the inner wall of the first support is fixedly connected with a bag type dust remover, the upper surface of the bag type dust remover is fixedly connected with a reaction box, and a desulfurization cavity and a denitration cavity are arranged in the reaction box. The lower surface of the desulfurization cavity is fixedly communicated with an air inlet pipe, the desulfurization cavity is communicated with the exhaust end of the bag type dust collector through the air inlet pipe, a communicating pipe used for communication is arranged between the desulfurization cavity and the denitration cavity, the inner side wall of the second support is fixedly connected with a centrifugal fan, the inlet end of the centrifugal fan is fixedly communicated with an exhaust pipe, and the inlet end of the exhaust pipe is communicated with the denitration cavity. The outlet end of the centrifugal fan fixedly communicates with a chimney; according to the utility model, dust is firstly removed, sulfide and nitrogen oxide are separately treated, the deacidification is thorough, the dust removal and deacidification effects are good, the filter bag backflushing can be realized, the dust removal efficiency of the filter bag is guaranteed, the ash can be automatically discharged, and meanwhile, a certain air locking function is also realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas dust removal device technical field, specifically a flue gas deacidification dust removal device. BACKGROUND

[0002] Garbage incineration is a commonly used domestic waste treatment process, and flue gas purification is the most important environmental protection measure of the garbage incineration process. The flue gas temperature at the outlet of the garbage incineration furnace can reach 1050℃, the dust carried by the flue gas can reach 20g / Nm, and it also contains sulfides and nitrogen oxides and other gases. Direct emission of such acidic pollutants and dust into the air will pollute the surrounding environment.

[0003] After searching, the Chinese patent with the publication number CN220802480U discloses a deacidification dust remover, relating to the technical field of waste gas emission equipment, which comprises a support main body and a conveying pipeline. The support main body is a hollow structure, and is provided with a smoke inlet and a smoke outlet. The bottom of the support main body is provided with a liquid discharge port, and the support main body is also provided with an annular inclined surface and an inclined slide for facilitating the sliding of liquid into the liquid discharge port. The annular inclined surface and the inclined slide are integrally formed, and the liquid discharge port is arranged at one end of the inclined slide. One end of the conveying pipeline is connected with the smoke inlet, and a water spraying or desorption spraying assembly is arranged on the conveying pipeline. The spraying assembly comprises a liquid storage tank, a liquid supply pipe and a nozzle. The nozzles are arranged on the conveying pipeline. One end of the liquid supply pipe is connected with the liquid storage tank, the input end of the nozzle is connected with the liquid supply pipe, and the output end of the nozzle is arranged in the conveying pipeline. A hydraulic pump is arranged on the liquid supply pipe near the liquid storage tank. The deacidification and dust removal of flue gas can be effectively realized by using the utility model.

[0004] The above-mentioned utility model has the following problems:

[0005] 1. The existing dust removal and deacidification effect is not very good, especially for dust smaller than 10μm, the dust absorption is not complete, the deacidification reaction is not complete, which can easily cause dust accumulation and blockage of the equipment, scaling of the water supply system, and high equipment failure rate.

[0006] Therefore, the technical personnel in the art provide a flue gas deacidification dust removal device to solve the problems in the above background technology. TECHNICAL CONTENT

[0007] The utility model aims at providing a flue gas deacidification dust removal device to solve the problems in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0009] The utility model provides a flue gas deacidification dust removal device, including first support and second support, first support inner wall fixedly connected with bag type dust collector, and bag type dust collector upper surface fixedly connected with reaction box, is provided with desulfurization chamber and denitration chamber in reaction box, and the lower surface fixed communication of desulfurization chamber has the air inlet pipe, and desulfurization chamber communicates with the exhaust end of bag type dust collector through air inlet pipe, and it is provided with the communication pipe for intercommunication between desulfurization chamber and denitration chamber, second support inner side wall fixedly connected with centrifugal fan, and the inlet end fixed communication of centrifugal fan has the exhaust pipe, and the inlet end of exhaust pipe communicates with denitration chamber, and the outlet end fixed communication of centrifugal fan has the chimney.

[0010] As a further scheme of the utility model: the upper surface of the reaction box is fixedly provided with two groups of feeding openings, which are respectively communicated with the desulfurization chamber and the denitration chamber, and the top end of the feeding opening is threadedly connected with a sealing cover.

[0011] As a further scheme of the utility model: the inner side walls of the desulfurization chamber and the denitration chamber are communicated with drain pipes, one end of the drain pipe extends to the outside of the reaction box, and the surface of the drain pipe is fixedly connected with a stop valve.

[0012] As a further scheme of the utility model: the surface of the first support is fixedly connected with a compressed air tank, and the outlet end of the compressed air tank is fixedly communicated with uniformly arranged blow pipes.

[0013] As a further scheme of the utility model: the outlet end of the blow pipe extends to the inlet end of the filter bag of the bag type dust collector, and the surface of the blow pipe is fixedly connected with an electromagnetic valve.

[0014] As a further scheme of the utility model: the dust discharge end of the bag type dust collector is fixedly communicated with a dust hopper, the inner side wall of the dust hopper is rotatably connected with a rotating shaft, the surface of the rotating shaft is fixedly connected with a plurality of groups of flippers, the flippers are arranged in a rice-shaped manner, and the flippers abut against the inner side wall of the outlet end of the dust hopper.

[0015] As a further scheme of the utility model: the side wall of the dust hopper is fixedly connected with a driving motor, the power output end of the driving motor is fixedly connected with a transmission rod, and one end of the transmission rod is fixedly connected with a second bevel gear.

[0016] As a further scheme of the utility model: one end of the rotating shaft is fixedly connected with a first bevel gear, and the first bevel gear is connected in meshing engagement with the second bevel gear.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The sealing cap seals the feed port to prevent foreign objects from entering the reaction chamber and ensures the airtightness of the equipment. Oxidizing and reducing agents and water can be introduced into the desulfurization chamber through the feed port. Urea, metal catalyst, and water can also be introduced into the denitrification chamber through the feed port. Flue gas enters the bag filter through the inlet, where large dust particles are filtered, achieving dust removal. The dust-removed flue gas then enters the desulfurization chamber through the inlet pipe. Flue gas, oxidizing catalyst, and water mix, causing particulate dust in the flue gas to condense and precipitate upon contact with water. Sulfides in the flue gas react with the oxidizing catalyst to form sulfates, thus removing sulfides. The desulfurized flue gas then enters the desulfurization chamber through the connecting pipe. Under the action of the metal catalyst, the flue gas and urea selectively react with nitrogen oxides (NOx) in the flue gas to generate N2 and H2O, thus completing desulfurization. The desulfurized and dust-removed flue gas is discharged through the chimney by a centrifugal fan, separating sulfides and nitrogen oxides for thorough desulfurization and good dust and acid removal effects.

[0019] 2. Flue gas enters the bag filter through the inlet. Large dust particles in the flue gas are filtered by the filter bags, and the dust adheres to the surface of the filter bags. The compressed air tank is intermittently sprayed by the solenoid valve, and the gas is introduced into the inlet end of the filter bags through the blowpipe to achieve backflushing of the filter bags, washing off the dust accumulated on the surface of the filter bags, ensuring the dust removal efficiency of the filter bags. The fallen dust is collected in the dust hopper. The drive motor drives the transmission rod to rotate, which in turn drives the second bevel gear to rotate. The second bevel gear drives the first bevel gear to rotate, which in turn drives the shaft to rotate. The shaft drives the deflector to rotate, and the deflector discharges the dust, achieving automatic dust discharge and also having a certain airlock function. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a flue gas deacidification and dust removal device.

[0021] Figure 2 This is a schematic diagram of the internal structure of the ash hopper outlet end in a flue gas deacidification and dust removal device.

[0022] Figure 3 This is a side view of the ash hopper outlet end in a flue gas desulfurization and dust removal device.

[0023] Figure 4 This is a schematic diagram of the internal structure of the reaction chamber in a flue gas deacidification and dust removal device.

[0024] In the diagram: 1. First support; 2. Bag filter; 3. Compressed air tank; 4. Pulse jet pipe; 5. Solenoid valve; 6. Ash hopper; 7. Rotary shaft; 8. Paddle; 9. First bevel gear; 10. Drive motor; 11. Transmission rod; 12. Second bevel gear; 13. Reaction chamber; 14. Desulfurization chamber; 15. Denitrification chamber; 16. Connecting pipe; 17. Air inlet pipe; 18. Drain pipe; 19. Shut-off valve; 20. Feed port; 21. Sealing cover; 22. Second support; 23. Centrifugal fan; 24. Exhaust pipe; 25. Chimney. Detailed Implementation

[0025] 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. Example 1

[0026] Reference Figures 1-4This embodiment provides a flue gas desulfurization and dust removal device, including a first support 1 and a second support 22. A bag filter 2 is fixedly connected to the inner wall of the first support 1. A reaction chamber 13 is fixedly connected to the upper surface of the bag filter 2. The reaction chamber 13 is provided with a desulfurization chamber 14 and a denitrification chamber 15. An air inlet pipe 17 is fixedly connected to the lower surface of the desulfurization chamber 14. The desulfurization chamber 14 is connected to the exhaust end of the bag filter 2 through the air inlet pipe 17. A connecting pipe 16 is provided between the desulfurization chamber 14 and the denitrification chamber 15 for communication. A centrifugal fan 23 is fixedly connected to the inner side wall of the second support 22. An exhaust pipe 24 is fixedly connected to the inlet end of the centrifugal fan 23. The inlet end of the exhaust pipe 24 is connected to the denitrification chamber 15. A chimney 25 is fixedly connected to the outlet end of the centrifugal fan 23. Two sets of feeding ports 20 are fixedly opened on the upper surface of the reaction chamber 13. The two sets of feeding ports 20 are respectively connected to the desulfurization chamber 14 and the denitrification chamber 15. A sealing cap 21 is threadedly connected to the top of the feeding port 20. Both the desulfurization chamber 14 and the denitrification chamber 15 have drain pipes 18 connected to their inner walls, with one end of the drain pipe 18 extending outside the reaction chamber 13. A shut-off valve 19 is fixedly connected to the surface of the drain pipe 18. The sealing cover 21 seals the feed port 20 to prevent foreign objects from entering the reaction chamber 13 and to ensure the airtightness of the equipment. Oxidizing and reducing agents and water can be introduced into the desulfurization chamber 14 through the feed port 20, and urea, metal catalyst, and water can be introduced into the denitrification chamber 15 through the feed port 20. Flue gas enters the bag filter through the inlet, where large dust particles are filtered by the filter bags, achieving dust removal. The dust-removed flue gas then enters the desulfurization chamber 14 through the inlet pipe 17. The flue gas, oxidation catalyst, and water are mixed, and the dust particles in the flue gas condense and precipitate upon contact with water. The sulfides in the flue gas react with the oxidation catalyst to form sulfates, thereby removing the sulfides. The desulfurized flue gas then enters the desulfurization chamber 14 through the connecting pipe 16. Under the action of the metal catalyst, the flue gas and urea selectively react with the nitrogen oxides (NOx) in the flue gas to generate N2 and H2O, thus completing the desulfurization. The flue gas after acid removal and dust removal is discharged through the chimney 25 under the action of the centrifugal fan 23, separating the treatment of sulfides and nitrogen oxides, resulting in thorough acid removal and good dust removal and acid removal effects. Example 2

[0027] Reference Figures 1-3This embodiment is based on the previous embodiment, but differs in that a compressed air tank 3 is fixedly connected to the surface of the first support 1. A uniformly arranged blowpipe 4 is fixedly connected to the outlet end of the compressed air tank 3. The outlet end of the blowpipe 4 extends to the filter bag inlet end of the bag filter 2. A solenoid valve 5 is fixedly connected to the surface of the blowpipe 4. A dust hopper 6 is fixedly connected to the dust discharge end of the bag filter 2. A rotating shaft 7 is rotatably connected to the inner wall of the dust hopper 6. Multiple sets of levers 8 are fixedly connected to the surface of the rotating shaft 7. The levers 8 are arranged in a star pattern and abut against the inner wall of the outlet end of the dust hopper 6. A drive motor 10 is fixedly connected to the side wall of the dust hopper 6. A transmission rod 11 is fixedly connected to the power output end of the drive motor 10. A second bevel gear 12 is fixedly connected to one end of the transmission rod 11. A first bevel gear 9 is fixedly connected to one end of the rotating shaft 7. The first bevel gear 9 and the second bevel gear 12 are meshed and connected. Flue gas enters the bag filter through the inlet. Large dust particles in the flue gas are filtered by the filter bags. The dust adheres to the surface of the filter bags. The compressed air tank 3 is intermittently sprayed by the solenoid valve 5. The gas is introduced into the inlet end of the filter bag through the blowpipe 4 to achieve backflushing of the filter bags and wash off the dust accumulated on the surface of the filter bags, ensuring the dust removal efficiency of the filter bags. The fallen dust is collected by the dust hopper 6. The drive motor 10 drives the transmission rod 11 to rotate. The rotation of the transmission rod 11 drives the second bevel gear 12 to rotate. The rotation of the second bevel gear 12 drives the first bevel gear 9 to rotate. The rotation of the first bevel gear 9 drives the rotating shaft 7 to rotate. The rotation of the rotating shaft 7 drives the paddle 8 to rotate. The rotation of the paddle 8 dumps the dust, realizing automatic dust discharge. It also has a certain airlock function.

[0028] 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.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flue gas desulfurization and dust removal device, characterized in that, The first support (1) and the second support (22) are included. A bag filter (2) is fixedly connected to the inner wall of the first support (1). A reaction chamber (13) is fixedly connected to the upper surface of the bag filter (2). A desulfurization chamber (14) and a denitrification chamber (15) are provided inside the reaction chamber (13). An air inlet pipe (17) is fixedly connected to the lower surface of the desulfurization chamber (14). The desulfurization chamber (14) is connected to the exhaust end of the bag filter (2) through the air inlet pipe (17). A connecting pipe (16) is provided between the desulfurization chamber (14) and the denitrification chamber (15). A centrifugal fan (23) is fixedly connected to the inner side wall of the second support (22). An exhaust pipe (24) is fixedly connected to the inlet end of the centrifugal fan (23). The inlet end of the exhaust pipe (24) is connected to the denitrification chamber (15). A chimney (25) is fixedly connected to the outlet end of the centrifugal fan (23).

2. The flue gas desulfurization and dust removal device according to claim 1, characterized in that, The upper surface of the reaction chamber (13) is fixedly provided with two sets of feeding ports (20), which are connected to the desulfurization chamber (14) and the denitrification chamber (15) respectively. The top of the feeding port (20) is threaded with a sealing cap (21).

3. The flue gas desulfurization and dust removal device according to claim 1, characterized in that, The inner walls of the desulfurization chamber (14) and the denitrification chamber (15) are connected to a drain pipe (18), and one end of the drain pipe (18) extends to the outside of the reaction tank (13). A shut-off valve (19) is fixedly connected to the surface of the drain pipe (18).

4. The flue gas desulfurization and dust removal device according to claim 1, characterized in that, The first bracket (1) is fixedly connected to a compressed air tank (3), and the outlet end of the compressed air tank (3) is fixedly connected to a uniformly arranged blow pipe (4).

5. The flue gas desulfurization and dust removal device according to claim 4, characterized in that, The outlet end of the blowpipe (4) extends to the filter bag inlet end of the bag filter (2), and a solenoid valve (5) is fixedly connected to the surface of the blowpipe (4).

6. The flue gas desulfurization and dust removal device according to claim 1, characterized in that, The dust collector (2) is fixedly connected to the dust discharge end of the dust collector (6). The inner wall of the dust collector (6) is rotatably connected to the rotating shaft (7). Multiple sets of paddles (8) are fixedly connected to the surface of the rotating shaft (7). The paddles (8) are arranged in a star shape and abut against the inner wall of the outlet end of the dust collector (6).

7. The flue gas desulfurization and dust removal device according to claim 6, characterized in that, A drive motor (10) is fixedly connected to the side wall of the ash hopper (6), and a transmission rod (11) is fixedly connected to the power output end of the drive motor (10). A second bevel gear (12) is fixedly connected to one end of the transmission rod (11).

8. The flue gas desulfurization and dust removal device according to claim 6, characterized in that, One end of the rotating shaft (7) is fixedly connected to a first bevel gear (9), and the first bevel gear (9) meshes with a second bevel gear (12).

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