A desulfurization and dust removal tower for exhaust gas purification

Abstract

The present invention discloses a desulfurization and dust removal tower for waste gas purification, which belongs to the technical field of flue gas treatment. A desulfurization and dust removal tower for waste gas purification comprises a tower body provided with an air outlet and a smoke inlet, a demister is fixedly installed on the inner top of the tower body, and also comprises: a packing layer, which is installed in the tower body and located below the demister, wherein a vertical pipe is installed in the tower body, a spray pipe is fixedly installed on the outer wall of the lower end of the vertical pipe, a nozzle is fixedly installed on the lower end of the spray pipe, and a lifting part for driving the vertical pipe to reciprocate up and down is provided in the tower body; the present invention can significantly reduce the probability of the packing layer being blocked by sulfide and dust, thereby ensuring the effect of the tower body on flue gas desulfurization and dust removal.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas treatment, and in particular to a desulfurization and dust removal tower for exhaust gas purification. Background Art

[0002] A desulfurization and dust removal tower for waste gas purification refers to a tower equipment used for desulfurization and dust removal of industrial waste gas. By arranging multiple packing layers and spraying layers in the tower body, the prepared desulfurization liquid is discharged into the tower body to make the sulfide in the industrial waste gas react with the desulfurization liquid, so that the sulfide and dust in the waste gas condense and fall, thereby realizing the desulfurization operation of the industrial waste gas, which is convenient for the discharge or continued use of the treated waste gas. The purpose of setting a packing layer in the desulfurization and dust removal tower for waste gas purification is to enable the waste gas and the desulfurization liquid to have a greater degree of contact, thereby improving the desulfurization efficiency of the waste gas.

[0003] In the prior art, the spray devices in the desulfurization and dust removal tower are mostly fixed, which will cause the liquid pressure on the packing layer to be in a balanced state. Over time, the gaps and holes in the packing layer are easily blocked by the settled dust and sulfides, making it difficult for the flue gas and desulfurization liquid to pass through the packing layer efficiently. Therefore, the packing layer needs to be cleaned and maintained regularly, which will affect the working efficiency of the desulfurization tower. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the packing layer in the desulfurization tower is easily blocked by floating dust and sulfide, and to propose a desulfurization and dust removal tower for exhaust gas purification.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A desulfurization and dust removal tower for exhaust gas purification comprises a tower body provided with an air outlet and a smoke inlet, a demister is fixedly installed on the inner top of the tower body, and also comprises: a packing layer installed in the tower body and located below the demister, wherein a vertical pipe is installed in the tower body, a spray pipe is fixedly installed on the outer wall of the lower end of the vertical pipe, a nozzle is fixedly installed on the lower end of the spray pipe, and a lifting part for driving the vertical pipe to reciprocate up and down is provided in the tower body.

[0007] In order to make the nozzle intermittently approach and move away from the packing layer, preferably, the lifting part includes a longitudinal groove arranged on the outer wall of the tower body, a lifting plate is longitudinally slidably connected in the longitudinal groove, and the vertical pipe is rotatably mounted on the lifting plate, wherein a reciprocating screw parallel to the longitudinal groove is rotatably mounted on the outer wall of the tower body, one end of the lifting plate is threadedly connected to the outer wall of the reciprocating screw, and a motor for driving the reciprocating screw to rotate is fixedly mounted on the outer wall of the tower body.

[0008] In order to facilitate the delivery of desulfurization liquid to the nozzle, preferably, a circulation pump is fixedly installed on the outer wall of the tower body, the input end of the circulation pump extends to the inner bottom of the tower body, the output end of the circulation pump is fixedly connected to a hose, and the output end of the hose is rotatably connected to the upper end of the vertical pipe.

[0009] In order to prevent smoke from being discharged from the longitudinal groove, further, the outer wall of the lifting plate is fixedly connected with a baffle closely attached to the inner wall of the tower body, and the baffle is sealed on the port of the longitudinal groove.

[0010] In order to increase the spraying area of ​​the nozzle, a device cavity is further provided in the lifting plate, and a horizontal axis is rotatably connected in the device cavity. The horizontal axis and the outer wall of the vertical tube are fixedly installed with transmission gears, and the two transmission gears are meshingly connected, wherein a driven gear is fixedly installed on the end of the horizontal axis away from the vertical tube, and a rack meshingly connected to the driven gear is fixedly installed on the outer wall of the tower body, and the rack is parallel to the reciprocating screw.

[0011] In order to make the packing layer shake up and down, further, the inner wall of the tower body is fixedly connected to a support seat, the packing layer is longitudinally slidably connected to the inner wall of the tower body, and the packing layer and the support seat are elastically connected by a spring, and the spray pipe is provided with a shaking part for driving the packing layer to shake up and down.

[0012] In order to automatically shake the packing layer up and down, the shaking part further includes a roller rotatably connected to the end of the spray pipe, and a plurality of circumferentially distributed protrusions are fixedly connected around the upper end of the packing layer. When the vertical pipe moves downward, the roller will press against the upper end of the packing layer.

[0013] In order to prevent the desulfurization liquid from settling at the bottom of the tower body, the lower end of the vertical pipe is further fixedly connected to an extension shaft extending to the bottom of the tower body, the upper end of the packing layer is provided with a through hole matching the extension shaft, and a stirring rod is fixedly installed on the outer wall of the lower end of the extension shaft.

[0014] In order to improve the effect of stirring the desulfurization liquid, further, the stirring rod is a tube body with a cavity inside, a nozzle connected to its cavity is fixedly installed on the outer wall of the stirring rod, and a circulation part connected to the stirring rod cavity is provided at the lower end of the extension shaft.

[0015] In order to automatically extract the desulfurization liquid at the bottom of the tower body, the circulation part further includes an elastic telescopic airbag fixedly installed at the lower end of the extension shaft, and the outer wall of the elastic telescopic airbag is fixedly connected with a suction pipe and a discharge pipe connected thereto, and a one-way valve is fixedly installed in the suction pipe and the discharge pipe, and the discharge pipe is connected to the cavity of the stirring rod.

[0016] Compared with the prior art, the present invention provides a desulfurization and dust removal tower for exhaust gas purification, which has the following beneficial effects:

[0017] 1. The desulfurization and dust removal tower for exhaust gas purification drives the nozzle to intermittently approach and move away from the upper end surface of the packing layer through the cooperation of the motor and the reciprocating screw, so that the dust and sulfide in the liquid will not adhere to the holes in the packing layer, thereby significantly reducing the probability of the packing layer being blocked by sulfide and dust, thereby ensuring the effect of the tower body on flue gas desulfurization and dust removal.

[0018] 2. The desulfurization and dust removal tower for exhaust gas purification drives the horizontal axis to reciprocate through the cooperation of the rack and the driven gear, and the vertical pipe drives the spray pipe and the nozzle to reciprocate, so that the nozzle has a wider spraying area, which can significantly improve the desulfurization and dust removal effect.

[0019] 3. When the desulfurization and dust removal tower for exhaust gas purification rolls multiple bumps in sequence through the roller, the packing layer will shake up and down under the action of the spring and the bumps, so that the dust and sulfide in the holes of the packing layer can be shaken out, so as to significantly improve the anti-blocking effect of the packing layer.

[0020] 4. The desulfurization and dust removal tower for exhaust gas purification drives the extension shaft to rotate and move up and down through the vertical pipe. The extension shaft drives the stirring rod to stir and move up and down at the inner bottom of the tower body, thereby preventing the solution at the bottom of the tower body from precipitating and affecting the spraying effect, and indirectly improving the desulfurization and dust removal effect of the tower body on the flue gas.

[0021] 5. The desulfurization and dust removal tower for exhaust gas purification uses an extension shaft that moves up and down to cause the elastic telescopic airbag to extract the liquid at the bottom of the tower body, and then spray it out from the nozzle, which can significantly improve the stirring effect of the stirring rod and make the liquid less likely to precipitate. The rotating extension shaft will also drive the elastic telescopic airbag to rotate, and the elastic telescopic airbag will drive the pipette to sweep in a circle, so as to significantly improve the suction range of the pipette and avoid dead corners that the pipette cannot absorb. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the axonometric structure of a desulfurization and dust removal tower for exhaust gas purification proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of an axonometric cutaway structure of a desulfurization and dust removal tower for exhaust gas purification proposed by the present invention;

[0024] Figure 3 This is a partial axonometric structural schematic diagram of a desulfurization and dust removal tower for exhaust gas purification proposed by the present invention;

[0025] Figure 4 This is a schematic diagram of the axonometric structure of a vertical pipe of a desulfurization and dust removal tower for exhaust gas purification proposed by the present invention;

[0026] Figure 5This is a schematic diagram of the axonometric structure of a lifting plate of a desulfurization and dust removal tower for exhaust gas purification proposed by the present invention;

[0027] Figure 6 This is a schematic diagram of the cross-sectional structure of a lifting plate of a desulfurization and dust removal tower for exhaust gas purification proposed by the present invention;

[0028] Figure 7 This is a schematic diagram of the axonometric structure of a packing layer of a desulfurization and dust removal tower for exhaust gas purification proposed by the present invention;

[0029] Figure 8 This is a schematic diagram of the extended axonometric structure of a desulfurization and dust removal tower for exhaust gas purification proposed by the present invention.

[0030] In the figure: 1. tower body; 2. air outlet; 3. smoke inlet; 4. packing layer; 5. demister; 6. spray pipe; 7. vertical pipe; 8. nozzle; 9. circulation pump; 10. hose; 11. lifting plate; 12. longitudinal groove; 13. reciprocating screw; 14. motor; 15. baffle; 16. device cavity; 17. horizontal axis; 18. transmission gear; 19. driven gear; 20. rack; 21. support seat; 22. spring; 23. bump; 24. roller; 25. extension shaft; 26. stirring rod; 27. elastic telescopic airbag; 28. suction tube; 29. ​​nozzle; 30. perforation. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Embodiment 1:

[0034] Reference Figure 1-Figure 8A desulfurization and dust removal tower for exhaust gas purification comprises a tower body 1 provided with an air outlet 2 and a smoke inlet 3, a demister 5 for reducing mist is fixedly installed on the inner top of the tower body 1, a desulfurization liquid is injected into the inner bottom of the tower body 1, and further comprises: a packing layer 4 for increasing the contact time and area between the flue gas and the desulfurization liquid, which is installed in the tower body 1 and is located below the demister 5, wherein a vertical pipe 7 is installed in the tower body 1, a spray pipe 6 is fixedly installed on the outer wall of the lower end of the vertical pipe 7, a nozzle 8 for spraying desulfurization liquid is fixedly installed at the lower end of the spray pipe 6, and a lifting part for driving the vertical pipe 7 to reciprocate up and down is provided in the tower body 1.

[0035] Specifically, when in use, the flue gas can enter the tower body 1 from the smoke inlet 3, and then pass through the packing layer 4 and the demister 5 in sequence, and finally the purified flue gas will be discharged from the tower body 1 from the gas outlet 2. During this period, the spray pipe 6 will spray the desulfurization liquid to the packing layer 4 through the nozzle 8, so that after the flue gas passes through the packing layer 4, it will react with the desulfurization liquid sprayed from the nozzle 8, so as to separate part of the dust and sulfide in the flue gas into the desulfurization liquid, so as to complete the desulfurization and dust removal work of the flue gas;

[0036] During desulfurization and dust removal, the vertical pipe 7 and the spray pipe 6 at the lower end are driven up and down by the lifting part, and the spray pipe 6 will drive the nozzle 8 to intermittently approach and move away from the upper end surface of the packing layer 4. When the nozzle 8 is close to the upper end surface of the packing layer 4, the upper end surface of the packing layer 4 will be subjected to a large liquid impact force. When the nozzle 8 is away from the upper end surface of the packing layer 4, the upper end surface of the packing layer 4 will be subjected to a small liquid impact force. Therefore, the nozzle 8 moving up and down reciprocatingly will cause the upper end surface of the packing layer 4 to be subjected to liquid impact forces of varying sizes. Therefore, the dust and sulfide in the liquid will not adhere to the holes in the packing layer 4, thereby significantly reducing the probability of the packing layer 4 being blocked by sulfide and dust, thereby ensuring the effect of the tower body 1 on flue gas desulfurization and dust removal.

[0037] A circulation pump 9 is fixedly installed on the outer wall of the tower body 1 , the input end of the circulation pump 9 extends to the inner bottom of the tower body 1 , the output end of the circulation pump 9 is fixedly connected to a hose 10 , and the output end of the hose 10 is rotatably connected to the upper end of the vertical pipe 7 .

[0038] During desulfurization and dust removal, the circulation pump 9 is started, the circulation pump 9 will extract the desulfurization liquid at the bottom of the tower body 1 and transport it to the vertical pipe 7 through the hose 10. The vertical pipe 7 will transport the desulfurization liquid to the spray pipe 6. The spray pipe 6 will spray the desulfurization liquid to the packing layer 4 through the nozzle 8 to complete the desulfurization and dust removal of the flue gas.

[0039] Embodiment 2:

[0040] Reference Figure 2 , Figure 3 , Figure 5 as well as Figure 6, which is basically the same as the first embodiment, and further discloses a specific implementation scheme of the lifting part.

[0041] The lifting part in the desulfurization and dust removal tower for exhaust gas purification includes a longitudinal groove 12 arranged on the outer wall of the tower body 1, and a lifting plate 11 is longitudinally slidably connected in the longitudinal groove 12. The vertical pipe 7 is rotatably installed on the lifting plate 11, wherein a reciprocating screw 13 parallel to the longitudinal groove 12 is rotatably installed on the outer wall of the tower body 1, one end of the lifting plate 11 is threadedly connected to the outer wall of the reciprocating screw 13, and a motor 14 for driving the reciprocating screw 13 to rotate is fixedly installed on the outer wall of the tower body 1.

[0042] Specifically, during the desulfurization and dust removal period, the motor 14 is started, and the motor 14 will drive the reciprocating screw 13 to rotate, and the reciprocating screw 13 will drive the lifting plate 11 to slide back and forth up and down, and the lifting plate 11 will drive the vertical pipe 7 and the spray pipe 6 at the lower end to move up and down, and the spray pipe 6 will drive the nozzle 8 to intermittently approach and move away from the upper end surface of the packing layer 4. When the nozzle 8 is close to the upper end surface of the packing layer 4, the upper end surface of the packing layer 4 will be subjected to a large liquid impact force, and when the nozzle 8 is away from the upper end surface of the packing layer 4, the upper end surface of the packing layer 4 will be subjected to a small liquid impact force. Therefore, the nozzle 8 that reciprocates up and down will cause the upper end surface of the packing layer 4 to be subjected to liquid impact forces of varying sizes, so that the dust and sulfide in the liquid will not adhere to the pores of the packing layer 4, thereby significantly reducing the probability of the packing layer 4 being blocked by sulfide and dust, thereby ensuring the effect of the tower body 1 on flue gas desulfurization and dust removal.

[0043] The outer wall of the lifting plate 11 is fixedly connected with a baffle 15 which is tightly attached to the inner wall of the tower body 1, and the baffle 15 blocks the end of the longitudinal groove 12; when the lifting plate 11 moves up and down, the lifting plate 11 will drive the baffle 15 to slide up and down on the inner wall of the tower body 1, and always block the longitudinal groove 12, thereby preventing the smoke in the tower body 1 from being discharged from the longitudinal groove 12.

[0044] Embodiment three:

[0045] Reference Figure 2-Figure 6 , which is basically the same as the second embodiment, and further, a specific implementation scheme for raising the spraying area of ​​the nozzle 8 is specifically added.

[0046] A device cavity 16 is provided in the lifting plate 11, and a transverse shaft 17 is rotatably connected in the device cavity 16. Transmission gears 18 are fixedly installed on the transverse shaft 17 and the outer wall of the vertical tube 7. The two transmission gears 18 are meshingly connected. A driven gear 19 is fixedly installed on the end of the transverse shaft 17 away from the vertical tube 7, and a rack 20 meshingly connected to the driven gear 19 is fixedly installed on the outer wall of the tower body 1, and the rack 20 is parallel to the reciprocating screw 13.

[0047] Specifically, when the lifting plate 11 is lifted and lowered, the lifting plate 11 will drive the horizontal shaft 17 and the driven gear 19 to move up and down synchronously, and the driven gear 19 will roll back and forth on the rack 20, and drive the horizontal shaft 17 to rotate back and forth, and the horizontal shaft 17 will drive the vertical pipe 7 to rotate back and forth through two mutually meshing transmission gears 18, and the vertical pipe 7 will drive the spray pipe 6 and the nozzle 8 to rotate back and forth, so that the nozzle 8 can have a wider spraying area, so as to significantly improve the desulfurization and dust removal effect.

[0048] In practice, the outer wall of the lifting plate 11 is provided with a slot to facilitate the driven gear 19 to extend out of the device cavity 16 and engage with the rack 20 .

[0049] Embodiment 4:

[0050] Reference Figure 2-Figure 7 , which is basically the same as the third embodiment, and further, a specific implementation scheme of making the packing layer 4 shake up and down is specifically added.

[0051] The inner wall of the tower body 1 is fixedly connected to a support seat 21, the packing layer 4 is longitudinally slidably connected to the inner wall of the tower body 1, and the packing layer 4 is elastically connected to the support seat 21 by a spring 22. The spray pipe 6 is provided with a shaking part for driving the packing layer 4 to shake up and down; the shaking part includes a roller 24 rotatably connected to the end of the spray pipe 6, and a plurality of circumferentially distributed protrusions 23 are fixedly connected around the upper end of the packing layer 4. The number of the protrusions 23 is 6-18, and the preferred number in this application is 10. When the vertical pipe 7 moves downward, the roller 24 will press against the upper end of the packing layer 4.

[0052] Specifically, when the spray pipe 6 moves downward, the spray pipe 6 will drive the roller 24 to press on the upper end surface of the packing layer 4. When the spray pipe 6 rotates with the vertical pipe 7, the spray pipe 6 will drive the roller 24 to roll on the upper end surface of the packing layer 4. When the roller 24 rolls onto the protrusion 23, the protrusion 23 will drive the packing layer 4 to press downward. When the roller 24 passes over the protrusion 23, the spring 22 will drive the packing layer 4 to lift and reset. Therefore, when the roller 24 rolls on multiple protrusions 23 in turn, the packing layer 4 will shake up and down under the action of the spring 22 and the protrusion 23, so that the dust and sulfide in the holes of the packing layer 4 can be shaken out, so as to significantly improve the anti-blocking effect of the packing layer 4, and the shaking packing layer 4 will give a reaction force to the spray pipe 6 and the nozzle 8, and the nozzle 8 and the nozzle 8 will vibrate, and the nozzle 8 is not easily blocked by the dust and sulfide in the liquid.

[0053] Embodiment five:

[0054] Reference Figure 2-Figure 4 as well as Figure 8 , which is basically the same as Example 4, and further discloses a specific implementation plan for adding stirring of the desulfurization liquid.

[0055] The lower end of the vertical pipe 7 is fixedly connected with an extension shaft 25 extending to the bottom of the tower body 1. The upper end of the packing layer 4 is provided with a through hole 30 cooperating with the extension shaft 25. The extension shaft 25 passes through the through hole 30. The outer wall of the lower end of the extension shaft 25 is fixedly installed with a stirring rod 26.

[0056] Specifically, when the vertical pipe 7 rotates and moves up and down, the vertical pipe 7 will also drive the extension shaft 25 to rotate and move up and down, and the extension shaft 25 will drive the stirring rod 26 to stir and move up and down at the inner bottom of the tower body 1, thereby preventing the solution at the bottom of the tower body 1 from precipitating and affecting the spraying effect, and indirectly improving the desulfurization and dust removal effect of the tower body 1 on the flue gas.

[0057] The above-mentioned stirring rod 26 is a tube body with a cavity inside. A nozzle 29 connected to its cavity is fixedly installed on the outer wall of the stirring rod 26. A circulation part connected to the cavity of the stirring rod 26 is provided at the lower end of the extension shaft 25. The circulation part includes an elastic telescopic airbag 27 fixedly installed at the lower end of the extension shaft 25. The outer wall of the elastic telescopic airbag 27 is fixedly connected with a suction tube 28 and a discharge tube connected to it. Both the suction tube 28 and the discharge tube are fixedly installed with a one-way valve, and the discharge tube is connected to the cavity of the stirring rod 26.

[0058] Specifically, when the extension shaft 25 moves downward, the extension shaft 25 will squeeze the elastic telescopic airbag 27, and the elastic telescopic airbag 27 will transport liquid to the cavity of the stirring rod 26 through the discharge pipe, and the stirring rod 26 will spray liquid through the nozzle 29 on the outer wall. When the extension shaft 25 moves upward, the elastic telescopic airbag 27 will elastically reset and absorb the liquid at the bottom of the tower body 1 through the suction pipe 28. Therefore, the extension shaft 25 moving up and down will cause the elastic telescopic airbag 27 to extract the liquid at the bottom of the tower body 1 and then spray it from the nozzle 29, which can significantly improve the stirring effect of the stirring rod 26 and make the liquid less likely to precipitate. In addition, the rotating extension shaft 25 will also drive the elastic telescopic airbag 27 to rotate, and the elastic telescopic airbag 27 will drive the suction pipe 28 to sweep in a circle, so as to significantly improve the suction range of the suction pipe 28 and avoid dead corners that the suction pipe 28 cannot absorb.

[0059] The desulfurization and dust removal tower for exhaust gas purification, when in use, the flue gas can enter the tower body 1 from the smoke inlet 3, and then pass through the packing layer 4 and the demister 5 in sequence, and finally the purified flue gas will be discharged from the tower body 1 from the gas outlet 2. During this period, the circulating pump 9 will extract the desulfurization liquid at the bottom of the tower body 1, and transport it to the vertical pipe 7 through the hose 10, the vertical pipe 7 will transport the desulfurization liquid to the spray pipe 6, the spray pipe 6 will spray the desulfurization liquid to the packing layer 4 through the nozzle 8, so after the flue gas passes through the packing layer 4, it will react with the desulfurization liquid sprayed from the nozzle 8, so as to separate part of the dust and sulfide in the flue gas into the desulfurization liquid, so as to complete the desulfurization and dust removal work of the flue gas.

[0060] During desulfurization and dust removal, the motor 14 is started, and the motor 14 will drive the reciprocating screw 13 to rotate, and the reciprocating screw 13 will drive the lifting plate 11 to slide back and forth up and down, and the lifting plate 11 will drive the vertical pipe 7 and the spray pipe 6 at the lower end to move up and down, and the spray pipe 6 will drive the nozzle 8 to intermittently approach and move away from the upper end surface of the packing layer 4. When the nozzle 8 is close to the upper end surface of the packing layer 4, the upper end surface of the packing layer 4 will be subjected to a large liquid impact force, and when the nozzle 8 is away from the upper end surface of the packing layer 4, the upper end surface of the packing layer 4 will be subjected to a small liquid impact force. Therefore, the nozzle 8 moving up and down reciprocatingly will cause the upper end surface of the packing layer 4 to be subjected to liquid impact forces of varying sizes, so that the dust and sulfide in the liquid will not adhere to the holes in the packing layer 4, thereby significantly reducing the probability of the packing layer 4 being blocked by sulfide and dust, thereby ensuring the effect of the tower body 1 on flue gas desulfurization and dust removal.

[0061] When the lifting plate 11 is lifted and lowered, the lifting plate 11 will drive the horizontal shaft 17 and the driven gear 19 to move up and down synchronously, the driven gear 19 will roll back and forth on the rack 20, and drive the horizontal shaft 17 to rotate back and forth, the horizontal shaft 17 will drive the vertical pipe 7 to rotate back and forth through two mutually meshing transmission gears 18, and the vertical pipe 7 will drive the spray pipe 6 and the nozzle 8 to rotate back and forth, so that the nozzle 8 can have a wider spraying area, so as to significantly improve the desulfurization and dust removal effect.

[0062] When the spray pipe 6 moves downward, the spray pipe 6 will drive the roller 24 to press on the upper end surface of the packing layer 4. When the spray pipe 6 rotates with the vertical pipe 7, the spray pipe 6 will drive the roller 24 to roll on the upper end surface of the packing layer 4. When the roller 24 rolls onto the protrusion 23, the protrusion 23 will drive the packing layer 4 to press downward. When the roller 24 passes over the protrusion 23, the spring 22 will drive the packing layer 4 to lift and reset. Therefore, when the roller 24 rolls on multiple protrusions 23 in turn, the packing layer 4 will shake up and down under the action of the spring 22 and the protrusion 23, so that the dust and sulfide in the holes of the packing layer 4 can be shaken out, so as to significantly improve the anti-blocking effect of the packing layer 4, and the shaking packing layer 4 will give a reaction force to the spray pipe 6 and the nozzle 8, and the nozzle 8 and the nozzle 8 will vibrate, and the nozzle 8 is not easily blocked by the dust and sulfide in the liquid.

[0063] When the vertical pipe 7 rotates and moves up and down, the vertical pipe 7 will also drive the extension shaft 25 to rotate and move up and down, and the extension shaft 25 will drive the stirring rod 26 to stir and move up and down at the inner bottom of the tower body 1, thereby preventing the solution at the bottom of the tower body 1 from precipitating and affecting the spraying effect, and indirectly improving the desulfurization and dust removal effect of the tower body 1 on the flue gas.

[0064] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A desulfurization and dust removal tower for exhaust gas purification, comprising a tower body (1) provided with an air outlet (2) and a smoke inlet (3), a demister (5) being fixedly mounted on the inner top of the tower body (1), characterized in that: Also includes: A packing layer (4) is installed in the tower body (1) and is located below the demister (5). A vertical pipe (7) is installed in the tower body (1), a spray pipe (6) is fixedly installed on the outer wall of the lower end of the vertical pipe (7), a spray head (8) is fixedly installed on the lower end of the spray pipe (6), and a lifting part for driving the vertical pipe (7) to reciprocate up and down is provided in the tower body (1); The lifting part comprises a longitudinal groove (12) arranged on the outer wall of the tower body (1), a lifting plate (11) is longitudinally slidably connected in the longitudinal groove (12), and the vertical pipe (7) is rotatably mounted on the lifting plate (11). A reciprocating screw (13) parallel to the longitudinal groove (12) is rotatably mounted on the outer wall of the tower body (1), one end of the lifting plate (11) is threadedly connected to the outer wall of the reciprocating screw (13), and a motor (14) for driving the reciprocating screw (13) to rotate is fixedly mounted on the outer wall of the tower body (1); The outer wall of the lifting plate (11) is fixedly connected to a baffle (15) which is in close contact with the inner wall of the tower body (1), and the baffle (15) is sealed on the end of the longitudinal groove (12); The lifting plate (11) is provided with a device cavity (16), a horizontal shaft (17) is rotatably connected to the device cavity (16), and a transmission gear (18) is fixedly mounted on the outer wall of the horizontal shaft (17) and the vertical pipe (7), and the two transmission gears (18) are meshingly connected. A driven gear (19) is fixedly mounted on one end of the horizontal axis (17) away from the vertical tube (7), and a rack (20) meshingly connected to the driven gear (19) is fixedly mounted on the outer wall of the tower body (1), and the rack (20) is parallel to the reciprocating screw (13); The inner wall of the tower body (1) is fixedly connected to a support seat (21), the packing layer (4) is longitudinally slidably connected to the inner wall of the tower body (1), and the packing layer (4) and the support seat (21) are elastically connected via a spring (22), and the spray pipe (6) is provided with a shaking portion for driving the packing layer (4) to shake up and down; The shaking part comprises a roller (24) rotatably connected to the end of the spray pipe (6); a plurality of circumferentially distributed protrusions (23) are fixedly connected to the upper end of the packing layer (4); when the vertical pipe (7) moves downward, the roller (24) will press against the upper end of the packing layer (4); When the plurality of protrusions (23) are rolled in sequence by the roller (24), the packing layer (4) will vibrate up and down under the action of the spring (22) and the protrusions (23).

2. A desulfurization and dust removal tower for exhaust gas purification according to claim 1, characterized in that: A circulation pump (9) is fixedly mounted on the outer wall of the tower body (1), the input end of the circulation pump (9) extends to the inner bottom of the tower body (1), the output end of the circulation pump (9) is fixedly connected to a hose (10), and the output end of the hose (10) is rotatably connected to the upper end of the vertical pipe (7).

3. A desulfurization and dust removal tower for exhaust gas purification according to claim 1, characterized in that: The lower end of the vertical pipe (7) is fixedly connected to an extension shaft (25) extending to the inner bottom of the tower body (1), the upper end of the packing layer (4) is provided with a through hole (30) matching the extension shaft (25), and the lower end outer wall of the extension shaft (25) is fixedly mounted with a stirring rod (26).

4. A desulfurization and dust removal tower for exhaust gas purification according to claim 3, characterized in that: The stirring rod (26) is a tube having a cavity inside. A nozzle (29) communicating with the cavity is fixedly mounted on the outer wall of the stirring rod (26). The lower end of the extension shaft (25) is provided with a circulation part communicating with the cavity of the stirring rod (26).

5. A desulfurization and dust removal tower for exhaust gas purification according to claim 4, characterized in that: The circulation section comprises an elastic telescopic airbag (27) fixedly mounted on the lower end of the extension shaft (25); an outer wall of the elastic telescopic airbag (27) is fixedly connected to a liquid suction pipe (28) and a liquid discharge pipe which are in communication therewith; a one-way valve is fixedly mounted in each of the liquid suction pipe (28) and the liquid discharge pipe; and the liquid discharge pipe is in communication with the cavity of the stirring rod (26).

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