A pre-baked anode baking kiln tail gas purification system and method

Abstract

The present invention belongs to the technical field of exhaust gas purification devices, and specifically discloses a pre-baked anode baking kiln exhaust gas purification system and method, including a spray tower device, an air intake pipe fixedly installed on one side of the spray tower device, an exhaust pipe fixedly installed on the upper and front positions of the spray tower device, an inner air guide tube provided on the inner side of the spray tower device, a plurality of fixed shafts fixedly provided between the inner air guide tube and the inner wall of the spray tower device, a fixed ring fixedly provided on the upper end of the inner air guide tube, a fixed cross fixedly provided on the inner side of the fixed ring, and a lower tube fixedly provided on the lower end of the inner air guide tube. The present invention, through the coordinated use of the whole, is controlled by two groups of hydraulic cylinders to open the size of the exhaust gas inlet opening, change the exhaust gas flow rate and direction, prolong the gas-liquid contact time, and at the same time shield the entry position.

Description

Technical Field

[0001] The invention belongs to the technical field of tail gas purification devices, and specifically discloses a tail gas purification system and method for a pre-baked anode baking kiln. Background Art

[0002] The exhaust from prebaked anode kilns contains highly toxic pollutants. Direct emission can severely harm human health and damage the ecological environment. Because prebaked anode kiln exhaust contains highly toxic benzopyrene, corrosive fluorides, and sticky tar, it must be efficiently purified through a spray tower.

[0003] For example, a paint mist treatment spray tower with the publication number CN116889788B relates to the field of spray tower technology, including a first connecting tube, the bottom end flange of the first connecting tube is connected to a second connecting tube, the bottom end flange of the second connecting tube is connected to a third connecting tube, the bottom end flange of the third connecting tube is connected to a reaction tube, and the bottom end flange of the reaction tube is connected to a collecting tube. In the actual operation of the present invention, after the exhaust gas enters the interior of the reaction tube, the initial state of the barrier circular plate of the second connecting tube is parallel to the ground, that is, the outer ring of the barrier circular plate is embedded in the inside of the groove, so that the second connecting tube and the third connecting tube are sealed and blocked. At this time, due to the continuous injection of exhaust gas, the gas concentration will gradually increase. At this time, due to the blocking effect of the barrier circular plate, the gas and liquid will fully react, thereby increasing the reaction time. At the same time, multiple adsorption balls are provided on the multiple connecting ropes at the bottom end of the barrier circular plate, and the adsorption balls can increase the adhesion of the liquid after the reaction.

[0004] In the above device, the incoming exhaust gas is treated by a spray head, and the sediment or tar and other substances after the sprayed water mist reacts with the exhaust gas fall directly, which can easily lead to the accumulation of sediment, and the air inlet and cloth strips set on the lower side are easily blocked and clogged, affecting the air intake effect. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a pre-baked anode baking kiln tail gas purification system and method.

[0006] In order to achieve the above objectives, the present invention provides a pre-baked anode baking kiln exhaust gas purification system and method, including a spray tower device, an air intake pipe is fixedly installed on one side of the spray tower device, an exhaust pipe is fixedly installed on the upper and front positions of the spray tower device, an inner air guide cylinder is provided on the inner side of the spray tower device, a plurality of groups of fixed shafts are fixedly provided between the inner air guide cylinder and the inner wall of the spray tower device, a fixing ring is fixedly provided on the upper end of the inner air guide cylinder, a fixed cross is fixedly provided on the inner side of the fixing ring, a lower cylinder is fixedly provided on the lower end of the inner air guide cylinder, hydraulic cylinders are fixedly installed on the inner walls of both sides of the lower cylinder, and fixed plates are fixedly installed on the lower sides of the two groups of hydraulic cylinder telescopic rods. The driving motor is fixedly installed at the lower end of the fixed plate, and a rotating rod is fixedly provided on the upper end of the driving motor rotating shaft, and an upper movable sleeve is sleeved on the outer side of the rotating rod, and a plurality of movable crosses are sleeved on the outer side of the rotating rod, and a sleeve shaft is fixedly provided on the outer side of the sleeve shaft; four groups of slide bars are fixedly provided on the outer side of the sleeve shaft, and protrusions are fixedly provided on the lower side of the four groups of slide bars, and a sleeve is sleeved on the outer side of the sleeve shaft, and sliding grooves are provided on the inner side of the sleeve shaft corresponding to the four groups of slide bars and protrusions. A spring is sleeved on the outer side of the sleeve shaft between the protrusion and the inner wall of the upper side of the sleeve, and a lifting ring is fixedly provided on the outer side of the movable cross, and a middle movable sleeve is sleeved on the outer side of the lifting ring.

[0007] In the above technical solution, preferably, four groups of scrapers are fixedly provided on the outer side of the movable cross, a receiving tray is fixedly provided at the lower end of the four groups of scrapers, several groups of discharge ports are opened on the inner side of the receiving tray, a shielding ring is fixedly provided on the upper side of the receiving tray, four groups of blades are fixedly provided on the lower end of the movable cross, two groups of fixed plates are fixedly provided on the outer sides of the upper movable sleeve and several groups of middle movable sleeves, two groups of upper ends of several groups of fixed shafts are fixedly provided with fixed columns, movable grooves are opened on the inner sides of the two groups of fixed columns corresponding to the positions of the fixed plates, spray heads are fixedly installed on the upper ends of the two groups of fixed columns, and a spray pipe is fixedly installed on one side of the spray head.

[0008] In the above technical solution, preferably, the air inlet pipe is fixedly connected to the inner air guide cylinder and the interior is communicated with each other. A certain gap is provided between the inner air guide cylinder and the inner wall of the spray tower equipment. The inner air guide cylinder is provided with a leakage port. The rotating rod passes through the interior of the lower cylinder and the inner air guide cylinder. The upper side of the rotating rod is a round block movably arranged in the upper movable sleeve.

[0009] In the above technical solution, preferably, the upper movable sleeve and the rotating rod are rotatably arranged, several groups of the movable crosses are vertically and evenly arranged, the uppermost group of the several groups of sleeve shafts is fixedly connected to the rotating rod, and the movable cross and all the sleeve shafts except the uppermost group are movably connected to the rotating rod.

[0010] In the above technical solution, preferably, the slide bar and the protrusion arranged on the outer side of the sleeve are engaged with the slide groove opened on the inner side of the sleeve, the sleeve is slidably connected to the sleeve, and the sleeve is fixedly connected to an adjacent lower group of movable crosses.

[0011] In the above technical solution, preferably, the lifting ring is correspondingly engaged in the corresponding groove on the inner side of the middle movable sleeve, and the middle movable sleeve is sleeved on the outer side of the lifting ring through the groove, and several groups of the middle movable sleeves present a conical structure.

[0012] In the above technical solution, preferably, the scraper and the receiving plate are respectively attached to the inner wall of the corresponding middle movable sleeve, the receiving plate is set at an angle, and the receiving plate is attached to the upper end of an adjacent lower group of middle movable sleeves, and several groups of the discharge ports are arranged evenly in a ring shape.

[0013] In the above technical solution, preferably, the fixing plates are respectively inserted into movable grooves provided in the fixing columns, the fixing plates and the fixing columns are slidingly arranged, and the spray pipe passes through the outside of the spray tower equipment.

[0014] Also provided is a method for using a roasting kiln tail gas purification device, which is used to operate a pre-baked anode roasting kiln tail gas purification system and method, comprising the following steps:

[0015] S1: Two sets of hydraulic cylinders are used to control the upper movable sleeve to move upward, driving the sleeve, the lower movable cross and the middle movable sleeve to move, so that the adjacent middle movable sleeves are opened at a certain distance to form inclined openings, allowing the exhaust gas inside to be discharged;

[0016] S2: The vertical movement of the middle movable sleeve is limited by the fixed column, so that several groups of middle movable sleeves are kept in a conical state, causing the tar to fall obliquely. Then, the driving motor controls the rotation of the movable cross and the blades to discharge the exhaust gas spirally outward;

[0017] S3: Use a scraper to scrape the inner wall of each set of middle movable sleeves to reduce the tar adhering to the inner wall of the middle movable sleeve and affect the overall weight. The scraped tar is thrown out through the discharge port and the opening at an angle to reduce the impact on the interior of the middle movable sleeve.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The exhaust gas enters the interior of the inner air guide cylinder through the air intake pipe, and then two groups of hydraulic cylinders control the fixed plate and the rotating rod to move upward, and the moving rotating rod pushes the upper movable sleeve to move upward, and the uppermost group of connected sleeve shafts are driven to move upward through the lower side of the upper movable sleeve. The sleeve shaft drives the four connected groups of protrusions to squeeze the spring, and then drives the sleeve and the lower side movable cross, lifting ring and the middle movable sleeve on the outside to move, and each group of sleeve shafts and protrusions on the lower side drive the movable cross, lifting ring, and middle movable sleeve to move upward, respectively squeezing the springs inside each group of sleeves, so that each group of middle movable sleeves are opened at a certain distance from each other. By opening the openings of the two adjacent groups of middle movable sleeves, the internal exhaust gas is discharged into the interior of the spray tower equipment. The size of the exhaust gas entry opening is opened by the control of the two groups of hydraulic cylinders. After changing the exhaust gas flow rate and direction, the gas-liquid contact time is extended to improve the absorption rate.

[0020] The fixed plate and the connected upper movable sleeve and middle movable sleeve are restricted to move vertically up and down by the fixed column, so that several groups of middle movable sleeves maintain the open state of the conical structure, so that the tar after the spray head reacts to the exhaust gas spray falls and flows obliquely, while blocking the entry position. The driving motor is then used to control the rotation of the rotating rod, driving the engaged sleeve shaft, sleeve and connected movable cross to rotate, and the movable cross drives the blades to rotate, and the internal exhaust gas is spirally discharged outward. The spirally rising exhaust gas enhances turbulent mixing, promotes collision and condensation reaction with the spray liquid, and increases the reaction time of the exhaust gas on the inside.

[0021] The scraper is used to scrape the inner wall of each group of middle movable sleeves respectively to reduce the tar adhering to the inner wall of the middle movable sleeve and affect the overall weight. The scraped tar slides onto the receiving tray, and the tar will be tilted out from the opened discharge port and opening of the adjacent opened middle movable sleeve, and automatically discharged to the outside of the middle movable sleeve, reducing the impact on the interior of the middle movable sleeve and the normal air intake effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a pre-baked anode baking kiln tail gas purification system and method proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of a pre-baked anode baking kiln tail gas purification system and method proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the internal partial structure of a pre-baked anode baking kiln tail gas purification system and method proposed by the present invention;

[0025] Figure 4 The present invention proposes a pre-baked anode baking kiln tail gas purification system and method Figure 3 A schematic diagram of the amplified structure of;

[0026] Figure 5 This is a schematic diagram of a partial cross-section of the shielding component of a pre-baked anode baking kiln exhaust purification system and method proposed in the present invention;

[0027] Figure 6 This is a partial enlarged structural diagram of the shielding component of a pre-baked anode baking kiln exhaust gas purification system and method proposed by the present invention. Figure 1 ;

[0028] Figure 7 The present invention proposes a pre-baked anode baking kiln tail gas purification system and method Figure 5 Schematic diagram of the B amplified structure;

[0029] Figure 8 The present invention proposes a pre-baked anode baking kiln tail gas purification system and method Figure 6 Schematic diagram of the C amplification structure;

[0030] Figure 9 The present invention proposes a pre-baked anode baking kiln tail gas purification system and method Figure 6 Schematic diagram of D amplification structure;

[0031] Figure 10 This is a partial enlarged structural diagram of the shielding component of a pre-baked anode baking kiln exhaust gas purification system and method proposed by the present invention. Figure 2 .

[0032] In the figure: 1. Spray tower equipment; 2. Air inlet pipe; 3. Exhaust pipe; 4. Inner air guide cylinder; 5. Fixed shaft; 6. Fixed ring; 7. Fixed cross; 8. Lower cylinder; 9. Hydraulic cylinder; 10. Fixed plate; 11. Drive motor; 12. Rotating rod; 13. Upper movable sleeve; 14. Movable cross; 15. Sleeve shaft; 16. Slide bar; 17. Bump; 18. Sleeve; 19. Slide groove; 20. Spring; 21. Lifting ring; 22. Middle movable sleeve; 23. Scraper; 24. Receiving tray; 25. Discharge port; 26. Shielding ring; 27. Blade; 28. Fixed plate; 29. ​​Fixed column; 30. Movable groove; 31. Spray head; 32. Spray pipe. DETAILED DESCRIPTION

[0033] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] like Figures 1 to 10 The exhaust gas purification system and method of a pre-baked anode baking kiln shown in the figure include a spray tower device 1, an air intake pipe 2 is fixedly installed on one side of the spray tower device 1, an exhaust pipe 3 is fixedly installed on the upper side and front side of the spray tower device 1, an inner air guide cylinder 4 is provided on the inner side of the spray tower device 1, and several groups of fixed shafts 5 are fixedly provided between the inner air guide cylinder 4 and the inner wall of the spray tower device 1, a fixing ring 6 is fixedly provided on the upper end of the inner air guide cylinder 4, a fixed cross 7 is fixedly provided on the inner side of the fixing ring 6, a lower cylinder 8 is fixedly provided on the lower end of the inner air guide cylinder 4, and hydraulic cylinders 9 are fixedly installed on the inner walls of both sides of the lower cylinder 8, a fixed plate 10 is fixedly installed on the lower side of the telescopic rod of the two groups of hydraulic cylinders 9, and a driving motor 11 is fixedly installed on the lower end of the fixed plate 10. A rotating rod 12 is fixedly provided on the upper end of the rotating shaft of the motor 11, and an upper movable sleeve 13 is sleeved on the uppermost side of the rotating rod 12. Several groups of movable crosses 14 are sleeved on the outer side of the rotating rod 12, and a sleeve shaft 15 is fixedly provided on the lower end of the movable cross 14 near the outer side of the rotating rod 12. Four groups of slide bars 16 are fixedly provided on the outer side of the sleeve shaft 15, and protrusions 17 are fixedly provided on the lower side of the four groups of slide bars 16. A sleeve 18 is sleeved on the outer side of the sleeve shaft 15, and a sliding groove 19 is provided on the inner side of the sleeve 18 corresponding to the four groups of slide bars 16 and the protrusions 17. A spring 20 is sleeved on the outer side of the sleeve shaft 15 between the protrusion 17 and the upper inner wall of the sleeve 18. A lifting ring 21 is fixed on the outer side of the movable cross 14, and a middle movable sleeve 22 is sleeved on the outer side of the lifting ring 21.

[0036] The air inlet pipe 2 is fixedly connected to the inner air guide cylinder 4 and is internally communicated. A certain gap is provided between the inner air guide cylinder 4 and the inner wall of the spray tower equipment 1. The inner air guide cylinder 4 is provided with a leakage port. The rotating rod 12 passes through the lower cylinder 8 and the interior of the inner air guide cylinder 4. The upper side of the rotating rod 12 is a round block movably set in the upper movable sleeve 13. The upper movable sleeve 13 and the rotating rod 12 are rotatably set. Several groups of movable crosses 14 are arranged vertically and evenly. The uppermost group of several groups of sleeve shafts 15 is fixedly connected to the rotating rod 12. The movable cross The frame 14 and all except the topmost set of sleeve shafts 15 are movably connected to the rotating rod 12. The slide bar 16 and the protrusion 17 arranged on the outside of the sleeve shaft 15 are engaged with the slide groove 19 opened on the inner side of the sleeve 18. The sleeve shaft 15 is slidably connected to the sleeve 18. The sleeve 18 is fixedly connected to the adjacent lower set of movable crosses 14. The lifting ring 21 is correspondingly engaged with the corresponding groove on the inner side of the middle movable sleeve 22. The middle movable sleeve 22 is sleeved on the outside of the lifting ring 21 through the groove. Several groups of middle movable sleeves 22 have a conical structure.

[0037] The exhaust enters the interior of the inner air guide cylinder 4 through the intake pipe 2, and then the two sets of hydraulic cylinders 9 control the fixed plate 10 and the rotating rod 12 to move upward, and the moving rotating rod 12 pushes the upper movable sleeve 13 to move upward, and the lower side of the upper movable sleeve 13 drives the uppermost set of connected sleeve shafts 15 to move upward, and the sleeve shaft 15 drives the four connected sets of protrusions 17 to squeeze the spring 20, and then drives the sleeve 18 and the lower side movable cross 14, the lifting ring 21 and the middle movable sleeve 22 on the outside to move, and each set of sleeves on the lower side The shaft 15 and the protrusion 17 drive the movable cross 14, the lifting ring 21, and the middle movable sleeve 22 to move upward, respectively squeezing the spring 20 inside each group of sleeves 18, so that each group of middle movable sleeves 22 are opened at a certain distance from each other. By opening the openings of two adjacent groups of middle movable sleeves 22, the internal exhaust gas is discharged into the interior of the spray tower equipment 1. Through the control of the two groups of hydraulic cylinders 9, the size of the exhaust gas entry opening is opened, and after changing the exhaust gas flow rate and direction, the gas-liquid contact time is prolonged and the absorption rate is improved.

[0038] Four groups of scrapers 23 are fixedly provided on the outer side of the movable cross 14, and a receiving tray 24 is fixedly provided at the lower end of the four groups of scrapers 23. Several groups of discharge ports 25 are opened on the inner side of the receiving tray 24, and a shielding ring 26 is fixedly provided on the upper side of the receiving tray 24. Four groups of blades 27 are fixedly provided on the lower end of the movable cross 14, and two groups of fixed plates 28 are fixedly provided on the outer sides of the upper movable sleeve 13 and several groups of middle movable sleeves 22. Two groups of upper ends of the several groups of fixed shafts 5 are fixedly provided with fixed columns 29, and movable grooves 30 are opened on the inner sides of the two groups of fixed columns 29 corresponding to the positions of the fixed plates 28. Spray heads 31 are fixedly installed on the upper ends of the two groups of fixed columns 29, and a spray pipe 32 is fixedly installed on one side of the spray head 31.

[0039] The scraper 23 and the receiving tray 24 are respectively fitted on the inner walls of the corresponding middle movable sleeve 22. The receiving tray 24 is inclined and fits on the upper end of the adjacent lower group of middle movable sleeves 22. Several groups of discharge ports 25 are evenly arranged in a ring shape. The fixed plates 28 are respectively inserted into the movable grooves 30 opened in the fixed columns 29. The fixed plates 28 and the fixed columns 29 are slidingly arranged, and the spray pipe 32 passes through the outside of the spray tower equipment 1.

[0040] The fixing plate 28 and the connected upper movable sleeve 13 and the middle movable sleeve 22 are restricted to move vertically up and down by the fixing column 29, so that the plurality of middle movable sleeves 22 maintain the open state of the conical structure, so that the tar after the exhaust gas spray reaction by the spray head 31 falls and flows obliquely, while blocking the entry position. Then, the driving motor 11 controls the rotation of the rotating rod 12, driving the engaged sleeve shaft 15, sleeve 18 and the connected movable cross 14 to rotate, and the movable cross 14 drives the blades 27 to rotate, and the internal exhaust gas is discharged spirally outward. The spirally rising exhaust gas enhances turbulent mixing, promotes collision and condensation reaction with the spray liquid, and increases the reaction time of the exhaust gas on the inside; in addition, the scraper 23 is used to scrape the inner wall of each group of middle movable sleeves 22 respectively to reduce the tar adhering to the inner wall of the middle movable sleeve 22, which affects the overall weight. The scraped tar slides onto the receiving tray 24, and the tar will be tilted out from the opened discharge port 25 and the opening of the adjacent opened middle movable sleeve 22, and automatically discharged to the outside of the middle movable sleeve 22, reducing the impact on the interior of the middle movable sleeve 22 and the normal air intake effect.

[0041] Also provided is a method for using a roasting kiln tail gas purification device, which is used to operate a pre-baked anode roasting kiln tail gas purification system and method, comprising the following steps:

[0042] S1: The upper movable sleeve 13 is controlled to move upward by two sets of hydraulic cylinders 9, driving the sleeve 18, the lower movable cross 14 and the middle movable sleeve 22 to move, so that the adjacent middle movable sleeves 22 are opened at a certain distance to discharge the exhaust gas inside.

[0043] S2: The fixed column 29 limits the vertical movement of the middle movable sleeve 22, so that several groups of middle movable sleeves 22 maintain a conical state, causing the tar to fall obliquely. Then, the driving motor 11 controls the rotation of the movable cross 14 and the blades 27 to discharge the exhaust gas spirally outward;

[0044] S3: scraping the inner wall of each group of middle movable sleeves 22 by the scraper 23 to reduce the tar adhering to the inner wall of the middle movable sleeve 22 and affecting the overall weight; the scraped tar is thrown out through the discharge port 25 and the opening tilted to reduce the impact on the interior of the middle movable sleeve 22.

[0045] Working principle: First, connect the intake pipe 2, exhaust pipe 3, and spray pipe 32 to the corresponding equipment respectively. When in use, the exhaust enters the inner air guide cylinder 4 through the intake pipe 2, and then the two groups of hydraulic cylinders 9 control the fixed plate 10 and the rotating rod 12 to move upward, and the moving rotating rod 12 pushes the upper movable sleeve 13 to move upward, and the lower side of the upper movable sleeve 13 drives the uppermost set of connected sleeve shafts 15 to move upward, and the sleeve shaft 15 drives the four connected groups of protrusions 17 to squeeze the spring 20, and then drives the sleeve 18 and the lower side movable cross 14 and lifting ring 2 1 and the middle movable sleeve 22 sleeved on the outside move, and each set of sleeve shafts 15 and protrusions 17 on the lower side drive the movable cross 14, the lifting ring 21, and the middle movable sleeve 22 to move upward, respectively squeezing the springs 20 inside each set of sleeves 18, so that each set of middle movable sleeves 22 are pulled apart from each other by a certain distance. By opening the openings of the two adjacent sets of middle movable sleeves 22, the internal exhaust gas is discharged into the interior of the spray tower equipment 1. Through the control of the two sets of hydraulic cylinders 9, the size of the exhaust gas inlet opening is opened, and after changing the exhaust gas flow rate and direction, the gas-liquid contact time is prolonged, and the exhaust gas is lifted. Absorption rate; and the fixed plate 28 is restricted by the fixed column 29 and the upper movable sleeve 13 and the middle movable sleeve 22 are moved vertically up and down, so that several groups of middle movable sleeves 22 maintain the open state of the conical structure, so that the tar after the exhaust gas spray reaction of the spray head 31 falls and flows obliquely, while blocking the entry position, and then the driving motor 11 controls the rotation of the rotating rod 12 to drive the sleeve shaft 15, the sleeve 18 and the connected movable cross 14 to rotate, and the movable cross 14 drives the blade 27 to rotate, and the internal exhaust spiral is discharged outward. The spiral rising exhaust gas enhances turbulent mixing, promotes the collision and condensation reaction with the spray liquid, and increases the reaction time of the exhaust gas on the inside; in addition, the scraper 23 is used to scrape the inner wall of each group of middle movable sleeves 22 respectively to reduce the tar adhering to the inner wall of the middle movable sleeve 22 and affect the overall weight. The scraped tar slides onto the receiving tray 24, and the tar will be tilted out from the opening of the adjacent opened middle movable sleeve 22 from the opened discharge port 25 and the opening, and automatically discharged to the outside of the middle movable sleeve 22, reducing the impact on the interior of the middle movable sleeve 22 and the normal air intake effect.

[0046] The spray tower equipment 1, air intake pipe 2, exhaust pipe 3, hydraulic cylinder 9, and drive motor 11 components in the present invention are common knowledge of structural components in the prior art field. Their structure, mutual connection method and usage method are already well-known technologies, and the device uses the existing sensor technology field for tensile testing. The model is selected according to actual use, so it will not be explained in detail.

[0047] In the present invention, the terms "installed," "connected," "connected," and "fixed" should be understood broadly. For example, "connected" can mean fixed, detachable, or integral; it can mean directly connected or indirectly connected through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] Throughout this specification, the use of terms such as "one embodiment," "some embodiments," or "specific embodiments" means that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0049] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-baked anode baking kiln tail gas purification system, comprising a spray tower device (1), characterized in that: An air inlet pipe (2) is fixedly installed on one side of the spray tower device (1), an exhaust pipe (3) is fixedly installed on the upper side and the front side of the spray tower device (1), an inner air guide cylinder (4) is provided on the inner side of the spray tower device (1), a plurality of fixed shafts (5) are fixedly provided between the inner air guide cylinder (4) and the inner wall of the spray tower device (1), a fixed ring (6) is fixedly provided on the upper end of the inner air guide cylinder (4), a fixed cross (7) is fixedly provided on the inner side of the fixed ring (6), a lower cylinder (8) is fixedly provided on the lower end of the inner air guide cylinder (4), hydraulic cylinders (9) are fixedly installed on the inner walls of both sides of the lower cylinder (8), fixed plates (10) are fixedly installed on the lower sides of the telescopic rods of the two groups of hydraulic cylinders (9), a driving motor (11) is fixedly provided on the lower end of the fixed plate (10), and a rotating rod (1) is fixedly provided on the upper end of the rotating shaft of the driving motor (11). 2), the uppermost side of the rotating rod (12) is covered with an upper movable sleeve (13), the outer side of the rotating rod (12) is covered with several groups of movable crosses (14), the lower end of the movable cross (14) is fixedly provided with a sleeve shaft (15) near the outer side of the rotating rod (12), the outer side of the sleeve shaft (15) is fixedly provided with four groups of slide bars (16), the lower side positions of the four groups of slide bars (16) are fixedly provided with a protrusion (17), the outer side of the sleeve shaft (15) is covered with a sleeve (18), the inner side of the sleeve (18) is provided with a sliding groove (19) corresponding to the four groups of slide bars (16) and the protrusion (17), the outer side of the sleeve shaft (15) is provided with a spring (20) between the protrusion (17) and the upper inner wall of the sleeve (18), the outer side of the movable cross (14) is fixedly provided with a lifting ring (21), and the outer side of the lifting ring (21) is covered with a middle movable sleeve (22); Four groups of scrapers (23) are fixedly provided on the outer side of the movable cross (14), a receiving tray (24) is fixedly provided at the lower end of the four groups of scrapers (23), a plurality of groups of discharge ports (25) are opened on the inner side of the receiving tray (24), and a shielding ring (26) is fixedly provided on the upper side of the receiving tray (24); The rotating rod (12) passes through the lower cylinder (8) and the inner air guide cylinder (4), and the upper side of the rotating rod (12) is a round block movably arranged in the upper movable sleeve (13); The upper movable sleeve (13) and the rotating rod (12) are rotatably arranged, a plurality of groups of movable crosses (14) are vertically and evenly arranged, the uppermost group of the plurality of sleeve shafts (15) is fixedly connected to the rotating rod (12), and the movable crosses (14) and all the sleeve shafts (15) except the uppermost group are movably connected to the rotating rod (12); The sliding strip (16) and the protrusion (17) provided on the outer side of the sleeve (15) are engaged with the sliding groove (19) provided on the inner side of the sleeve (18); the sleeve (15) is slidably connected to the sleeve (18); and the sleeve (18) is fixedly connected to an adjacent lower side group of movable crosses (14); The lifting ring (21) is correspondingly engaged in the corresponding groove on the inner side of the middle movable sleeve (22), and the middle movable sleeve (22) is sleeved on the outer side of the lifting ring (21) through the groove, and several groups of the middle movable sleeves (22) present a conical structure; The scraper (23) and the receiving tray (24) are respectively attached to the inner wall of the corresponding middle movable sleeve (22), the receiving tray (24) is inclined, and the receiving tray (24) is attached to the upper end of the adjacent lower group of middle movable sleeves (22), and the plurality of groups of discharge ports (25) are evenly arranged in a ring shape.

2. The tail gas purification system for a prebaked anode baking kiln according to claim 1, characterized in that: Four groups of blades (27) are fixedly provided at the lower end of the movable cross (14), two groups of fixed plates (28) are fixedly provided on the outer sides of the upper movable sleeve (13) and several groups of middle movable sleeves (22), two groups of fixed shafts (5) are fixedly provided with fixed columns (29) at the upper ends, movable grooves (30) are provided at positions corresponding to the fixed plates (28) on the inner sides of the two groups of fixed columns (29), spray heads (31) are fixedly installed on the upper ends of the two groups of fixed columns (29), and a spray pipe (32) is fixedly installed on one side of the spray head (31).

3. The tail gas purification system for a prebaked anode baking kiln according to claim 1, characterized in that: The air inlet pipe (2) is fixedly connected to the inner air guide cylinder (4) and is in internal communication with each other. A certain gap is provided between the inner air guide cylinder (4) and the inner wall of the spray tower equipment (1). The inner air guide cylinder (4) is provided with a material leakage port.

4. The tail gas purification system for a prebaked anode baking kiln according to claim 2, characterized in that: The fixed plates (28) are respectively inserted into the movable grooves (30) provided in the fixed columns (29), the fixed plates (28) and the fixed columns (29) are slidably arranged, and the spray pipe (32) passes through the outside of the spray tower equipment (1).

5. A method for using a baking kiln tail gas purification device, used to operate a pre-baked anode baking kiln tail gas purification system according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: The upper movable sleeve (13) is controlled to move upward by two sets of hydraulic cylinders (9), driving the sleeve (18) and the lower movable cross (14) and the middle movable sleeve (22) to move, so that the adjacent middle movable sleeves (22) are opened at a certain distance to discharge the exhaust gas inside; S2: The middle movable sleeve (22) is restricted from vertical movement by a fixed column (29), so that several groups of middle movable sleeves (22) are kept in a conical state, so that the tar falls obliquely, and then the movable cross (14) and the blade (27) are controlled to rotate by a driving motor (11), so that the exhaust gas inside is discharged spirally outward; S3: scraping the inner wall of each group of middle movable sleeves (22) by a scraper (23) to reduce the tar adhering to the inner wall of the middle movable sleeve (22) and affecting the overall weight; the scraped tar is thrown out through the discharge port (25) and the opening tilted to reduce the impact on the interior of the middle movable sleeve (22).

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