Tail gas treatment device for tar residue recovery

Abstract

The invention relates to the technical field of tail gas treatment, and discloses a tail gas treatment device for tar residue recovery, the tail gas treatment device comprises a desulfurization tower, a circulation partition plate and a plurality of demisting plates distributed at equal intervals are fixed on the desulfurization tower, a hollow rod is rotatably connected to the circulation partition plate, and a strip-shaped plate is fixed at the lower end of the hollow rod; a plurality of spray heads which are distributed at equal intervals are fixed on the strip-shaped plate, a movable first moving bracket is arranged in the desulfurization tower, and a plurality of scraping plates which are distributed at equal intervals are fixed on the first moving bracket; under the cooperation of the lead screw and the first servo motor, the scraping plate is promoted to horizontally move along the demisting plate, the purpose of rapidly scraping scale attached to the surface of the demisting plate can be achieved, time and labor are saved, convenience and rapidness are achieved, the tail gas demisting effect is improved, the tail gas circulation efficiency can also be improved, and the tail gas treatment efficiency is improved. And when the arranged scraper blade bracket moves, scales attached to the scraper blade can be cleaned up, so that the scraper blade can be conveniently used next time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tail gas treatment, in particular to a tail gas treatment device for tar residue recovery. BACKGROUND

[0002] Tar residue is a viscous industrial solid hazardous waste produced in the coking industry, with high benzene series and ammonia nitrogen content and strong volatility. It is listed as a hazardous waste and strictly prohibited from being discharged. Through recovery and treatment, it can avoid pollution of soil, atmosphere and water caused by direct discharge or simple incineration, and reduce environmental risks caused by random disposal. The tail gas is subjected to processes such as cooling and dust removal, mist separation, tar purification and recovery, desulfurization and dust removal, and emission. The tail gas generated during the tar residue recovery process contains harmful substances such as hydrogen sulfide, which needs to be introduced into a desulfurization tower for desulfurization treatment before emission, which can effectively remove these pollutants and prevent environmental pollution caused by their emission into the atmosphere.

[0003] The desulfurization tower is provided with a spray head for spraying lime solution, which is mainly used to absorb sulfur dioxide in the tail gas. A demisting plate is also provided to remove solution droplets entrained in the tail gas to avoid secondary discharge of pollutants. The impurities in the tail gas combine with lime water droplets to easily form scale, which adheres to the surface of the demisting plate and the spray head, causing blockage of the spray head and reducing the contact area of the demisting plate with liquid droplet-containing gas, affecting the desulfurization effect. After the scale appears, the device needs to be stopped and the spray head and demisting plate need to be disassembled and cleaned, which is time-consuming and labor-intensive, has low cleaning efficiency, and affects the treatment efficiency of the tail gas. SUMMARY

[0004] The present application provides a tail gas treatment device for tar residue recovery, which has a scraper that moves horizontally along the demisting plate, which can quickly remove the scale adhering to the surface of the demisting plate, saving time and effort, being convenient and fast, improving the demisting effect of the tail gas, and improving the flow efficiency of the tail gas. The scale adhering to the scraper can be cleaned when the scraper support moves, which is beneficial for the next use of the scraper, solving the problem of stopping the device, disassembling the spray head and demisting plate, cleaning them, which is time-consuming and labor-intensive, has low cleaning efficiency, and affects the treatment efficiency of the tail gas.

[0005] The present application provides the following technical solution: a tail gas treatment device for tar residue recovery, comprising a desulfurization tower, a flow-through partition plate and a plurality of equally spaced demisting plates are fixed on the desulfurization tower, a hollow rod is rotatably connected to the flow-through partition plate, a strip-shaped plate is fixed to the lower end of the hollow rod, a plurality of equally spaced spray heads are fixed to the strip-shaped plate, a first movable support is provided in the desulfurization tower, and a plurality of equally spaced scrapers are fixed to the first movable support.

[0006] The desulfurization tower is provided with movable first abutting supports on both sides, a plurality of arc abutting blocks are fixed on the first abutting supports, a rotatable cleaning seat is arranged below the spray head, and a plurality of rotatable brush cleaning cylinders are arranged in the cleaning seat.

[0007] As an optional solution of the tail gas treatment device for tar residue recovery, the desulfurization tower is rotatably connected with a lead screw, and the desulfurization tower is fixed with a first servo motor and a first guide rod.

[0008] As an optional solution of the tail gas treatment device for tar residue recovery, the hollow rod is fixed with a first gear, the first gear is meshingly connected with a second gear, the desulfurization tower is fixed with a second servo motor, the motor shaft of the second servo motor is fixedly connected with the second gear, and the hollow rod is installed with a rotary joint.

[0009] As an optional solution of the tail gas treatment device for tar residue recovery, one side of the first movable support is provided with a scraper support, one end of the scraper support is elastically connected with the desulfurization tower through a first spring, a first abutting wedge is fixed on the scraper support, a Z-shaped rod is abuttingly arranged on the first abutting wedge, the Z-shaped rod is slidably connected on the flow-through partition plate, and a limiting ring is fixed on the Z-shaped rod.

[0010] As an optional solution of the tail gas treatment device for tar residue recovery, two third servo motors are fixed on the desulfurization tower, a bearing seat is fixed on the motor shaft of the third servo motor, a connecting shaft is rotatably connected on the bearing seat, a second sliding support is fixed on one end of the cleaning seat, one end of the connecting shaft is elastically connected with the second sliding support through a second spring, a third gear is fixed on the other end of the connecting shaft, an arc-shaped gear rack is meshingly arranged on the third gear, and the arc-shaped gear rack is fixed on the desulfurization tower.

[0011] As an optional solution of the tail gas treatment device for tar residue recovery, a rotating rod is fixed on the lower end of the brush cleaning cylinder, a fourth gear is fixed on the rotating rod, a straight gear rack is meshingly connected on the fourth gear, an abutting block is fixed on one side of the straight gear rack, a third sliding support is fixed on the cleaning seat, and the abutting block is elastically connected with the third sliding support through a third spring.

[0012] As an optional scheme of the tail gas treatment device for tar residue recovery, one side of the cleaning seat is provided with a resisting head, the resisting head is elastically connected with the desulfurization tower through a fourth spring, and an extension block is fixed to one end of the resisting head.

[0013] As an optional scheme of the tail gas treatment device for tar residue recovery, a fifth spring is connected between the first resisting support and the desulfurization tower, a flap is resisted on one side of the first resisting support, a rotating block is fixed on the desulfurization tower, the rotating block is rotationally connected with the flap, and one end of the flap is resisted by the resisting head.

[0014] As an optional scheme of the tail gas treatment device for tar residue recovery, a collecting box is arranged in the desulfurization tower, a second guide rod is fixed on the collecting box, the second guide rod is elastically connected with the desulfurization tower through a sixth spring, a second resisting wedge is fixed on one side of the collecting box, an electric push rod is fixed on the desulfurization tower, and a piston rod of the electric push rod is slidably connected with the desulfurization tower.

[0015] As an optional scheme of the tail gas treatment device for tar residue recovery, a knocking block is arranged above the collecting box, an L-shaped rod is fixed on the knocking block, and the L-shaped rod is elastically connected with the desulfurization tower through a seventh spring.

[0016] The tail gas treatment device for tar residue recovery has the following advantages:

[0017] 1. In the tail gas treatment device for tar residue recovery, the nozzles arranged on the strip-shaped plate can atomize and spray the lime solution through the water pump, so as to contact with the tail gas injected at the bottom of the desulfurization tower, absorb sulfur compounds such as sulfur dioxide, and realize the rotation of the strip-shaped plate and the nozzles through the cooperation of the hollow rod, the first gear, the second gear and the second servo motor, improve the uniformity of the lime solution spraying, ensure the full mixing of the tail gas and the solution, reduce the attachment of impurities on the nozzles, and reduce the blocking probability.

[0018] By the scraper provided on the first moving support, under the cooperation of the lead screw and the first servo motor, the scraper can be moved horizontally along the demisting plate, so that the attached scale on the surface of the demisting plate can be scraped off quickly, which is time-saving, labor-saving, convenient and fast, not only improves the effect of tail gas demisting, but also improves the tail gas flow efficiency. The scale attached to the scraper can be cleaned when the scraper support moves, which facilitates the use of the scraper next time. When the strip-shaped plate drives the nozzle to rotate, the strip-shaped plate can be in contact with the Z-shaped rod, the Z-shaped rod is in contact with the first contact wedge, so that the scraper support moves horizontally automatically, and the scale on the scraper is cleaned.

[0019] 2、In the tail gas treatment device for tar residue recovery, the brush cleaning barrel provided on the cleaning seat can be sleeved on the nozzle and rotated, so that the scale attached around the spray hole of the nozzle can be brushed off, thereby improving the effect of the nozzle on lime solution spraying. The working position of the cleaning seat can be adjusted by the third servo motor. By the cooperation of the bearing seat, the connecting shaft, the third gear and the arc-shaped rack, the opening position of the brush cleaning barrel can be automatically adjusted when the cleaning seat rotates. The opening of the brush cleaning barrel in the initial state faces downward and is located in the collecting box, so that the impurities of the brush cleaning barrel can fall into the collecting box. When the brush cleaning barrel works, the opening faces upward, so that the brush cleaning barrel can be sleeved on the nozzle for scale cleaning.

[0020] When the first moving support moves, the first contact support can be preliminarily contacted, so that the first contact support pushes the warped plate to deflect and contact the contact head, so that the contact head moves horizontally and contacts the cleaning seat, so that the brush cleaning barrel with the upward opening can be automatically sleeved on the corresponding nozzle. When the first moving support continues to move, the warped plate can be further deflected, so that the extension block fixed at the end of the contact head reciprocatingly pushes the contact block to move horizontally, so that the straight rack moves to synchronously rotate the plurality of brush cleaning barrels, so that the nozzle can be cleaned in all directions, the scale can be easily removed, the nozzle can be less blocked, and the desulfurization effect of the tail gas can be improved.

[0021] 3、In the tail gas treatment device for tar residue recovery, the electric push rod can be in contact with the second contact wedge, so as to adjust the position height of the collecting box. After the cleaning seat is reset, the collecting box can be sleeved on the brush cleaning barrel with the downward opening. On the one hand, the cleaning impurities can be collected, and on the other hand, the desulfurized tail gas with impurities can be prevented from entering the brush cleaning barrel, so as to affect the cleaning effect. The knocking block can knock the reset cleaning seat, so as to improve the impurity separation effect. When the first moving support drives the scraper to reset, the warped plate can reciprocatingly contact the L-shaped rod, so as to facilitate the knocking block to automatically knock the cleaning seat and improve the impurity separation effect. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a schematic diagram of the internal structure of the desulfurization tower of the present invention.

[0024] Figure 3 This is a schematic diagram of the demister plate structure of the present invention.

[0025] Figure 4 This is a schematic diagram of the cleaning seat structure of the present invention.

[0026] Figure 5 This is a schematic diagram of the internal structure of the cleaning seat of the present invention.

[0027] Figure 6 This is a schematic diagram of the collection box structure of the present invention.

[0028] Figure 7 for Figure 2 Enlarged view of point A in the middle.

[0029] Figure 8 for Figure 4 Enlarged view of section B in the middle.

[0030] In the diagram: 1. Desulfurization tower; 2. Flow baffle; 3. Hollow rod; 4. Strip plate; 5. Nozzle; 6. Demisting plate; 7. First moving support; 8. Scraper; 9. First contact support; 10. Arc-shaped contact block; 11. Cleaning seat; 12. Brush cleaning cylinder; 13. Lead screw; 14. First servo motor; 15. First guide rod; 16. First gear; 17. Second gear; 18. Second servo motor; 19. Rotary joint; 20. Scraper support; 21. First spring; 22. First contact wedge; 23. Z-shaped rod; 24. Limiting ring; 25. Third servo motor; 26. 27. Bearing housing; 28. Connecting shaft; 29. ​​Second sliding bracket; 30. Second spring; 31. Third gear; 32. Arc rack; 33. Rotating rod; 34. Fourth gear; 35. Straight rack; 36. Abutting block; 37. Third sliding bracket; 38. Third spring; 39. Abutting head; 40. Fourth spring; 41. Extension block; 42. Fifth spring; 43. Rocker; 44. Rotating block; 45. Collection box; 46. Second guide rod; 47. Sixth spring; 48. Second abutting wedge; 49. Electric push rod; 50. Striking block; 51. L-shaped rod; 52. Seventh spring. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1, please refer to Figures 1 to 8 A tail gas treatment device for tar residue recovery includes a desulfurization tower 1, a flow baffle 2 and several equidistant demisters 6 fixed on the desulfurization tower 1, a hollow rod 3 rotatably connected to the flow baffle 2, a strip plate 4 fixed to the lower end of the hollow rod 3, several equidistant nozzles 5 fixed on the strip plate 4, and a movable first moving support 7 provided inside the desulfurization tower 1, several equidistant scrapers 8 fixed on the first moving support 7.

[0033] Both sides of the desulfurization tower 1 are provided with movable first contact brackets 9. Several arc-shaped contact blocks 10 are fixed on the first contact brackets 9. A rotatable cleaning seat 11 is provided below the nozzle 5. Several rotatable brush cleaning cylinders 12 are provided inside the cleaning seat 11.

[0034] A lead screw 13 is rotatably connected to the desulfurization tower 1, and a first servo motor 14 and a first guide rod 15 are fixed on the desulfurization tower 1. The motor shaft of the first servo motor 14 is fixedly connected to one end of the lead screw 13, and the lead screw 13 is threadedly connected to the first movable support 7, and the first guide rod 15 is slidably connected to the first movable support 7.

[0035] A first gear 16 is fixed on the hollow rod 3, and a second gear 17 is meshed with the first gear 16. A second servo motor 18 is fixed on the desulfurization tower 1, and the motor shaft of the second servo motor 18 is fixedly connected to the second gear 17. A rotary joint 19 is installed on the hollow rod 3.

[0036] A scraper bracket 20 is provided on one side of the first movable support 7. One end of the scraper bracket 20 is elastically connected to the desulfurization tower 1 through a first spring 21. A first abutting wedge 22 is fixed on the scraper bracket 20. A Z-shaped rod 23 abuts on the first abutting wedge 22. The Z-shaped rod 23 is slidably connected to the flow partition 2. A limit ring 24 is fixed on the Z-shaped rod 23.

[0037] refer to Figures 1 to 8 The tar-purified exhaust gas is introduced into the desulfurization tower 1. Simultaneously, through the cooperation of water pump, pipeline and rotary joint 19, the nozzle 5 atomizes and sprays lime solution to absorb sulfur dioxide and other sulfide substances in the exhaust gas. The second servo motor 18 is started. The second gear 17 on the motor shaft of the second servo motor 18 drives the first gear 16 on the hollow rod 3 to rotate, so that the strip plate 4 drives several nozzles 5 to rotate and spray, improve the uniformity of lime solution spraying, ensure that the exhaust gas and solution are fully mixed, and reduce the adhesion of impurities on the nozzles 5, reducing the probability of clogging.

[0038] Then, the desulfurized exhaust gas passes through the flow baffle 2 and comes into contact with several equidistantly distributed demisters 6. The demisters 6 separate the liquid and gas containing pollutants, thereby improving the quality of exhaust gas emissions. When scale appears on the surface of the demisters 6, the first servo motor 14 is activated. The first servo motor 14 drives the lead screw 13 to rotate. The rotation of the lead screw 13 drives the first moving bracket 7 to move horizontally along the first guide rod 15, so that several scrapers 8 on the first moving bracket 7 can move in the gap between two adjacent demisters 6, thereby achieving the purpose of scraping off the scale on the surface of the demisters 6, improving the demisting effect of the exhaust gas, and the exhaust gas flow efficiency.

[0039] When the first movable support 7 is reset, the nozzle 5 rotates and sprays lime solution, which can make the strip plate 4 and the Z-shaped rod 23 come into contact, causing the Z-shaped rod 23 to slide on the flow partition 2 and come into contact with the first contact wedge 22, so that the scraper support 20 can move horizontally on the desulfurization tower 1. The first spring 21 stores force, which can realize the purpose of automatic cleaning of the scraper 8 that scrapes off the scale by the scraper support 20, so that the scraper 8 can be used again.

[0040] In order to prevent the lead screw 13 from malfunctioning in harsh environments, a protective cover is installed on the desulfurization tower 1. The protective cover is fitted over the lead screw 13 and the connection between the lead screw 13 and the first movable support 7. Furthermore, a bellows-style telescopic protective cover is installed between the two sides of the upper end of the first movable support 7 and the two ends of the protective cover. This can prevent exhaust gas from entering the protective cover and contacting the lead screw 13, thereby improving the service life of the lead screw 13.

[0041] Example 2 is an improvement upon Example 1. For details, please refer to [link / reference]. Figures 1 to 8 Two third servo motors 25 are fixed on the desulfurization tower 1. A bearing seat 26 is fixed on the motor shaft of the third servo motor 25. A connecting shaft 27 is rotatably connected to the bearing seat 26. A second sliding bracket 28 is fixed to one end of the cleaning seat 11. One end of the connecting shaft 27 is elastically connected to the second sliding bracket 28 through a second spring 29. A third gear 30 is fixed to the other end of the connecting shaft 27. An arc-shaped rack 31 meshes on the third gear 30. The arc-shaped rack 31 is fixed on the desulfurization tower 1.

[0042] A rotating rod 32 is fixed to the lower end of the brush cleaning cylinder 12. A fourth gear 33 is fixed on the rotating rod 32. A rack 34 is meshed on the fourth gear 33. An abutment block 35 is fixed on one side of the rack 34. A third sliding bracket 36 is fixed on the cleaning seat 11. The abutment block 35 is elastically connected to the third sliding bracket 36 through a third spring 37.

[0043] A contact head 38 is provided on one side of the cleaning seat 11. The contact head 38 is elastically connected to the desulfurization tower 1 through a fourth spring 39, and an extension block 40 is fixed to one end of the contact head 38.

[0044] A fifth spring 41 is connected between the first contact support 9 and the desulfurization tower 1, and a rocker plate 42 is abutted on one side of the first contact support 9. A rotating block 43 is fixed on the desulfurization tower 1. The rotating block 43 is rotatably connected to the rocker plate 42, and one end of the rocker plate 42 abuts against the contact head 38.

[0045] refer to Figures 1 to 8 When cleaning the demisting plate 6, the nozzle 5 also needs to be cleaned. Two third servo motors 25 are started. The cleaning seat 11 is initially located on one side of the desulfurization tower 1, and the opening of the brush cleaning cylinder 12 is facing downward. When the motor shaft of the third servo motor 25 drives the bearing seat 26 to rotate horizontally, the connecting shaft 27 drives the cleaning seat 11 to deflect to the working position. At the same time, the third gear 30 fixed at the other end of the connecting shaft 27 meshes with the arc rack 31, so that the connecting shaft 27 deflects and rotates, causing the brush cleaning cylinder 12 with the opening facing downward to deflect to the working position, so that its opening automatically faces upward. Then the corresponding nozzle 5 rotates to directly above the brush cleaning cylinder 12.

[0046] When the first moving bracket 7 moves horizontally, it comes into contact with the first abutting bracket 9, causing the first abutting bracket 9 to slide on the desulfurization tower 1 and push the rocker arm 42 to deflect on the rotating block 43. The fifth spring 41 stores force, causing the lower end of the rocker arm 42 to contact the abutting head 38. The abutting head 38 slides on the desulfurization tower 1 and comes into contact with the cleaning seat 11. The fourth spring 39 stores force, causing the second sliding bracket 28 on the cleaning seat 11 to move vertically upward at one end of the connecting shaft 27, so that the brush cleaning cylinder 12 can automatically fit onto the corresponding nozzle 5. When the first moving bracket 7 continues to move, it can achieve contact with the first moving bracket 5. The purpose of intermittent contact of several arc-shaped contact blocks 10 on the contact bracket 9 is to allow the rocker plate 42 to continue to deflect and push the contact head 38 to move again. This causes the extension block 40 fixed at the end of the contact head 38 to push the contact block 35 to reciprocate on the third sliding bracket 36. The third spring 37 continuously stores and releases its elasticity, causing the rack 34 to drive the fourth gear 33 to rotate continuously. This causes the brush cleaning cylinder 12 on the rotating rod 32 to rotate synchronously, which can achieve the purpose of cleaning the nozzle 5 in all aspects, so as to remove scale, reduce the clogging of the nozzle 5, and improve the desulfurization treatment effect of the exhaust gas.

[0047] Example 3 is an improvement upon Example 2. For details, please refer to [link / reference]. Figures 1 to 8 The desulfurization tower 1 is equipped with a collection box 44, and a second guide rod 45 is fixed on the collection box 44. The second guide rod 45 is elastically connected to the desulfurization tower 1 through a sixth spring 46. A second abutting wedge block 47 is fixed on one side of the collection box 44. An electric push rod 48 is fixed on the desulfurization tower 1, and the piston rod of the electric push rod 48 is slidably connected to the desulfurization tower 1.

[0048] A striking block 49 is provided above the collection box 44, and an L-shaped rod 50 is fixed on the striking block 49. The L-shaped rod 50 is elastically connected to the desulfurization tower 1 through a seventh spring 51.

[0049] refer to Figures 1 to 6 When the first movable support 7 abuts against one side of the desulfurization tower 1, it releases contact with the arc-shaped contact block 10. At this time, the motor shaft of the third servo motor 25 rotates, thereby driving the cleaning seat 11 to reset. At the same time, the electric push rod 48 is activated, causing the piston rod of the electric push rod 48 to abut against the second contact wedge 47, so that the second guide rod 45 slides downward on the desulfurization tower 1. The sixth spring 46 stores force, causing the collection box 44 to move down, avoiding obstruction to the cleaning seat 11. When the cleaning seat 11 is reset, the opening of the brush cleaning cylinder 12 faces downward, and the piston rod of the electric push rod 48 retracts, so that the collection box 44 can be fitted onto the cleaning seat 11. On the one hand, it can collect cleaning impurities, and on the other hand, it prevents the desulfurization tail gas from carrying impurities into the brush cleaning cylinder 12, affecting the cleaning effect.

[0050] When the first movable support 7 is reset, it continues to contact several arc-shaped contact blocks 10, which can achieve the purpose of intermittent contact between the rocker plate 42 and the L-shaped rod 50, causing the L-shaped rod 50 to slide back and forth on the desulfurization tower 1. The seventh spring 51 continuously stores and releases its elasticity, so as to drive the over-tapping block 49 to automatically tap the cleaning seat 11, thereby improving the effect of impurity removal.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A tail gas treatment device for tar residue recovery, comprising a desulfurization tower (1), characterized in that: The desulfurization tower (1) is fixed with a flow baffle (2) and several equidistant demisters (6). A hollow rod (3) is rotatably connected to the flow baffle (2). A strip plate (4) is fixed to the lower end of the hollow rod (3). Several equidistant nozzles (5) are fixed to the strip plate (4). The desulfurization tower (1) is provided with a movable first moving support (7). Several equidistant scrapers (8) are fixed to the first moving support (7). The desulfurization tower (1) is provided with movable first contact brackets (9) on both sides. Several arc-shaped contact blocks (10) are fixed on the first contact brackets (9). A rotatable cleaning seat (11) is provided below the nozzle (5). Several rotatable brush cleaning cylinders (12) are provided in the cleaning seat (11).

2. The tail gas treatment device for tar residue recovery according to claim 1, characterized in that: A lead screw (13) is rotatably connected to the desulfurization tower (1), and a first servo motor (14) and a first guide rod (15) are fixed on the desulfurization tower (1). The motor shaft of the first servo motor (14) is fixedly connected to one end of the lead screw (13), and the lead screw (13) is threadedly connected to the first movable support (7), and the first guide rod (15) is slidably connected to the first movable support (7).

3. The tail gas treatment device for tar residue recovery according to claim 1, characterized in that: A first gear (16) is fixed on the hollow rod (3), and a second gear (17) is meshed with the first gear (16). A second servo motor (18) is fixed on the desulfurization tower (1), and the motor shaft of the second servo motor (18) is fixedly connected to the second gear (17). A rotary joint (19) is installed on the hollow rod (3).

4. The tail gas treatment device for tar residue recovery according to claim 1, characterized in that: A scraper bracket (20) is provided on one side of the first movable bracket (7). One end of the scraper bracket (20) is elastically connected to the desulfurization tower (1) through a first spring (21). A first abutting wedge (22) is fixed on the scraper bracket (20). A Z-shaped rod (23) abuts on the first abutting wedge (22). The Z-shaped rod (23) is slidably connected to the flow partition (2). A limit ring (24) is fixed on the Z-shaped rod (23).

5. The tail gas treatment device for tar residue recovery according to claim 1, characterized in that: Two third servo motors (25) are fixed on the desulfurization tower (1). A bearing seat (26) is fixed on the motor shaft of the third servo motor (25). A connecting shaft (27) is rotatably connected to the bearing seat (26). A second sliding bracket (28) is fixed at one end of the cleaning seat (11). One end of the connecting shaft (27) is elastically connected to the second sliding bracket (28) through a second spring (29). A third gear (30) is fixed at the other end of the connecting shaft (27). An arc-shaped rack (31) meshes on the third gear (30). The arc-shaped rack (31) is fixed on the desulfurization tower (1).

6. The tail gas treatment device for tar residue recovery according to claim 1, characterized in that: The lower end of the brush cleaning cylinder (12) is fixed with a rotating rod (32), a fourth gear (33) is fixed on the rotating rod (32), a rack (34) is meshed on the fourth gear (33), an abutment block (35) is fixed on one side of the rack (34), a third sliding bracket (36) is fixed on the cleaning seat (11), and the abutment block (35) is elastically connected to the third sliding bracket (36) through a third spring (37).

7. The tail gas treatment device for tar residue recovery according to claim 1, characterized in that: The cleaning seat (11) is provided with an abutment (38) on one side. The abutment (38) is elastically connected to the desulfurization tower (1) through a fourth spring (39), and an extension block (40) is fixed at one end of the abutment (38).

8. The tail gas treatment device for tar residue recovery according to claim 7, characterized in that: A fifth spring (41) is connected between the first contact support (9) and the desulfurization tower (1), and a rocker plate (42) is abutted on one side of the first contact support (9). A rotating block (43) is fixed on the desulfurization tower (1). The rotating block (43) is rotatably connected to the rocker plate (42), and one end of the rocker plate (42) abuts against the contact head (38).

9. The tail gas treatment device for tar residue recovery according to claim 7, characterized in that: The desulfurization tower (1) is provided with a collection box (44), and a second guide rod (45) is fixed on the collection box (44). The second guide rod (45) is elastically connected to the desulfurization tower (1) through a sixth spring (46). A second abutting wedge (47) is fixed on one side of the collection box (44). An electric push rod (48) is fixed on the desulfurization tower (1), and the piston rod of the electric push rod (48) is slidably connected to the desulfurization tower (1).

10. The tail gas treatment device for tar residue recovery according to claim 9, characterized in that: A striking block (49) is provided above the collection box (44), and an L-shaped rod (50) is fixed on the striking block (49). The L-shaped rod (50) is elastically connected to the desulfurization tower (1) through a seventh spring (51).

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