Tail gas purification equipment of high-tower compound fertilizer prilling tower

Abstract

The invention discloses tail gas purification equipment for a high-tower compound fertilizer prilling tower, which comprises a purification cylinder and a support frame, the purification cylinder is arranged in the support frame and is fixedly connected with the inner wall of the support frame, one side of the bottom of the purification cylinder is communicated with a treatment pipe, the top of the purification cylinder is communicated with an exhaust pipe, and the tail gas purification equipment further comprises a filtering device, the filtering device is arranged in the purification cylinder and fixedly connected with the inner wall of the purification cylinder, the filtering device is provided with a net-shaped filtering structure, and the filtering device is used for filtering tail gas entering the purification cylinder through the treatment pipe; the absorption device is arranged at the part, located above the filtering device, in the purification barrel, and the absorption device is fixedly connected with the inner wall of the purification barrel. The tail gas purification equipment of the high-tower compound fertilizer prilling tower is better in tail gas treatment effect, and pollution caused by the fact that tail gas is discharged into the external environment is conveniently reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tail gas purification of a compound fertilizer granulation tower, in particular to tail gas purification equipment of a high-tower compound fertilizer granulation tower. Background Art

[0002] my country's compound (mixed) fertilizer industry has made great progress in recent years, playing a key role in modern agricultural production and my country's food security. As a new process for the production of compound (mixed) fertilizers, the high-tower granulation compound fertilizer process has developed rapidly in recent years. The products are well received by the market, and this development momentum is still continuing. According to incomplete statistics, there are more than 200 compound fertilizer granulation towers that have been built and operated nationwide, with a total production capacity of more than 40 million tons / year, and the number is increasing at a rate of dozens per year. The exhaust gas emitted by the compound fertilizer granulation tower during the production and processing contains a certain concentration of dust and ammonia.

[0003] At present, the exhaust gas from high towers is usually directly filtered through a filter before being discharged. The treatment is simple and can only treat larger particles of dust. The treatment effect is poor, causing the discharged gas to easily damage the environment. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an exhaust gas purification device for a high-tower compound fertilizer granulation tower, comprising a purification cylinder and a support frame, wherein the purification cylinder is arranged inside the support frame and fixedly connected to the inner wall of the support frame, a treatment pipe is connected to one side of the bottom of the purification cylinder, and an exhaust pipe is connected to the top of the purification cylinder, and further comprising A filter device, which is arranged inside the purification cylinder and fixedly connected to the inner wall of the purification cylinder, and has a mesh filter structure, and is used to filter the exhaust gas entering the purification cylinder through the treatment pipe; An absorption device, which is arranged in a portion of the purification cylinder above the filter device, and is fixedly connected to the inner wall of the purification cylinder, and is used to absorb small particles in the exhaust gas after being filtered by the filter device; The purification device is arranged in the part inside the purification cylinder above the absorption device. The purification device is fixedly connected to the inner wall of the purification cylinder. The purification device is used to purify the exhaust gas after being adsorbed by the absorption device, so that the exhaust gas treatment effect is better and it is convenient to reduce the pollution caused by the exhaust gas being discharged into the external environment.

[0005] Preferably, the filter device includes a filter plate, the inner wall of the filter plate is fixedly connected to a filter screen, the bottom of the filter plate is connected to a conical air inlet, the bottom of the inner wall of the conical air inlet is fixedly connected to a drive motor via a bracket, the drive shaft of the drive motor is fixedly connected to an arc-shaped cleaning brush, and the bottom of the filter plate is fixedly connected to a heat conducting plate, so that the surface of the filter screen can be kept unobstructed at all times, and the filtering efficiency of the filter screen is guaranteed without manual cleaning. At the same time, it is convenient to collect the cleaned dust particles, and the exhaust gas entering the purification cylinder can be cooled to avoid the high exhaust gas temperature affecting subsequent treatment.

[0006] Preferably, the filter disc is arranged inside the purification cylinder and fixedly connected to the inner wall of the purification cylinder, and one end of the heat conducting sheet passes through the purification cylinder and extends to the outside of the purification cylinder.

[0007] Preferably, a heat dissipation bellows is sleeved on and fixedly connected to the outer wall of the purification cylinder. The heat dissipation bellows is arranged in a ring shape. One end of the heat conductive plate located outside the purification cylinder extends to the inside of the heat dissipation bellows. An inlet fan and an exhaust fan are respectively fixedly connected on both sides of the heat dissipation bellows. The inlet fan and the exhaust fan are both connected to the inside of the heat dissipation bellows.

[0008] Preferably, the absorption device includes an absorption tank, the bottom of which passes through and is fixedly connected to an air intake pipe, the top of the air intake pipe is connected to a diverter plate, the bottom of the diverter plate is rotatably connected to the air intake pipe through a sealing bearing, the side of the diverter plate is connected to a diverter pipe, the end of the diverter pipe away from the air intake pipe is connected to an air outlet nozzle, an air outlet hole is provided on the side of the air outlet nozzle, an arc spring is fixedly connected to the bottom of the inner wall of the diverter plate, and the end of the arc spring away from the bottom of the inner wall of the diverter plate is fixedly connected to a plug, and an absorption device is provided, when the exhaust gas is filtered by the filtering device, it enters the interior of the air intake pipe, and as the air pressure below the air intake pipe As the air pressure gradually increases, it pushes the plug upward and causes the plug to come out from the top of the intake pipe. At this time, the exhaust gas can enter the diverter plate through the intake pipe, and the exhaust gas inside the diverter plate is discharged into the absorption liquid inside the absorption tank through the diverter pipe and the air outlet holes on the air outlet nozzle, so that the small particles in the exhaust gas can be adsorbed by the absorbed liquid, and the ammonia in the exhaust gas can also be dissolved in the absorption liquid, which is convenient for the treatment of small particles of dust and ammonia in the exhaust gas, so that the gas can contact the absorption liquid at various positions in the absorption tank, which is convenient for improving the absorption efficiency, and can make the gas stay longer near the filter device, which is convenient for improving the heat dissipation effect.

[0009] Preferably, the absorption pool is arranged inside the purification cylinder and fixedly connected to the inner wall of the purification cylinder, and the diversion air pipes are arranged in multiple groups and are evenly distributed on the side of the diversion plate.

[0010] Preferably, the bottom of the plug extends to the inside of the air inlet pipe, the plug is adapted to the inner diameter of the air inlet pipe, and the plug is used to block the connection between the air inlet pipe and the diverter plate.

[0011] Preferably, the purification device includes a purification disk, the inner wall of the purification disk is rotatably connected to a rotating plate, the rotating plate is provided with a purification hole, the inner wall of the purification hole is fixedly connected to a purification mesh shell, the interior of the purification mesh shell is filled with adsorption filler, and the driving shaft of the purification motor is fixedly connected to the center position of the top of the rotating plate, the purification motor is fixedly connected to the inner wall of the purification disk through a connecting frame, and the top of the purification disk is connected to an exhaust pipe, so that ammonia in the exhaust gas can be thoroughly treated and the purification treatment effect is more thorough.

[0012] Preferably, the purification disk is arranged inside the purification cylinder and fixedly connected to the inner wall of the purification cylinder, and the adsorption filler inside the purification net shell is sodium hydroxide particles.

[0013] The present invention provides an exhaust gas purification device for a high-tower compound fertilizer granulation tower. It has the following beneficial effects: 1. The tail gas purification equipment of the high-tower compound fertilizer granulation tower sends the tail gas into the purification cylinder through the treatment pipe when in use, and is filtered by the filter device inside the purification cylinder to filter out larger dust particles in the tail gas. The tail gas after filtration enters the absorption device, and the smaller dust particles in the tail gas are absorbed by the absorption device. The tail gas passing through the absorption device enters the purification device, and is purified by the purification device, and then the tail gas is discharged from the exhaust pipe, so that the tail gas treatment effect is better, and it is convenient to reduce the pollution caused by the exhaust gas discharged into the external environment.

[0014] 2. The exhaust gas purification equipment of the high-tower compound fertilizer granulation tower is provided with a filtering device. When the exhaust gas enters the interior of the purification cylinder, it enters the interior of the filter disc through the conical air inlet at the bottom of the filter disc, and then continues to move upward and passes through the filter net, so that larger dust particles can be retained on the surface of the filter net through the filter net. At the same time, since the filter net is an arc-shaped spherical surface, the driving motor drives the arc-shaped cleaning brush to brush and clean the surface of the filter net, so that the surface of the filter net can be kept unobstructed at all times, and the filtering efficiency of the filter net is guaranteed without manual cleaning. At the same time, the dust particles cleaned up by the arc-shaped cleaning brush fall between the conical air inlet and the inner wall of the filter disc, which is convenient for collecting the cleaned dust particles.

[0015] 3. The exhaust gas purification equipment of the high-tower compound fertilizer granulation tower is provided with an air outlet nozzle and an air outlet hole. When gas is discharged from the air outlet hole, the reverse thrust of the discharged gas can push the air outlet nozzle to drive the diversion air pipe and the diversion plate to rotate, so that the air outlet nozzle can move in the absorption liquid in the absorption tank, so that the gas can contact the absorption liquid at various positions in the absorption tank, which is convenient for improving the absorption efficiency. A plug and an arc spring are provided, and the air pressure in the space below the absorption device inside the purification cylinder can be increased by sealing the plug, so that the area near the filter device inside the purification cylinder can store more gas, so that the gas can stay near the filter device for a longer time, which is convenient for improving the heat dissipation effect.

[0016] 4. The tail gas purification equipment of the high-tower compound fertilizer granulation tower is provided with a purification device. After the tail gas is absorbed by the absorption device, it enters the purification plate. The material entering the purification plate continues to move upward and is discharged to the top of the rotating plate through the purification holes on the rotating plate. When the tail gas passes through the purification holes, it reacts with the adsorption filler inside the purification net shell, thereby reacting and absorbing the ammonia in the tail gas that is not completely dissolved in the absorption liquid, so that the ammonia in the tail gas can be completely treated, and the purification treatment effect is more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the tail gas purification equipment of the high tower compound fertilizer granulation tower of the present invention; Figure 2 This is a schematic diagram of the internal structure of the purification cartridge of the present invention; Figure 3 It is a schematic diagram of the structure of the filtering device of the present invention; Figure 4 This is a schematic diagram of the internal structure of the filter device of the present invention; Figure 5 This is a schematic diagram of the bottom structure of the filter device of the present invention; Figure 6 It is a schematic diagram of the structure of the absorption device of the present invention; Figure 7 This is a schematic diagram of the internal structure of the absorption device of the present invention; Figure 8 It is a schematic diagram of the structure of the purification device of the present invention; Fig. 9 It is a schematic diagram of the internal structure of the purification device of the present invention.

[0018] In the figure: 1. purification cylinder; 2. support frame; 3. treatment tube; 4. exhaust pipe; 5. filtering device; 51. filter plate; 52. filter net; 53. conical air inlet; 54. drive motor; 55. arc-shaped cleaning brush; 56. heat conducting plate; 57. heat dissipation bellows; 58. inlet fan; 59. exhaust fan; 6. absorption device; 61. absorption tank; 62. air inlet pipe; 63. diverter plate; 64. diverter air pipe; 65. outlet nozzle; 66. air outlet hole; 67. arc spring; 68. plug; 7. purification device; 71. purification plate; 72. rotating plate; 73. purification hole; 74. purification net shell; 76. purification motor; 77. air outlet pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 2 The present invention provides a technical solution: an exhaust gas purification device for a high-tower compound fertilizer granulation tower, comprising a purification cylinder 1 and a support frame 2, wherein the purification cylinder 1 is arranged inside the support frame 2 and is fixedly connected to the inner wall of the support frame 2, a processing pipe 3 is connected to one side of the bottom of the purification cylinder 1, and an exhaust pipe 4 is connected to the top of the purification cylinder 1, and further comprising A filter device 5, which is disposed inside the purification cylinder 1 and fixedly connected to the inner wall of the purification cylinder 1, and has a mesh filter structure, and is used to filter the exhaust gas that enters the purification cylinder 1 through the treatment tube 3; The absorption device 6 is arranged in the part of the purification cylinder 1 above the filter device 5, and the absorption device 6 is fixedly connected to the inner wall of the purification cylinder 1. The absorption device 6 is used to absorb small particles in the exhaust gas after being filtered by the filter device 5; The purification device 7 is arranged in the part inside the purification cylinder 1 above the absorption device 6. The purification device 7 is fixedly connected to the inner wall of the purification cylinder 1. The purification device 7 is used to purify the exhaust gas after being adsorbed by the absorption device 6.

[0021] When in use, the exhaust gas is sent into the purification cylinder 1 through the treatment pipe 3, filtered by the filter device 5 inside the purification cylinder 1, and the larger dust particles in the exhaust gas are filtered out. The filtered exhaust gas enters the absorption device 6, and the smaller dust particles in the exhaust gas are absorbed by the absorption device 6. The exhaust gas passing through the absorption device 6 enters the purification device 7, and the exhaust gas is purified by the purification device 7. Then, the exhaust gas is discharged from the exhaust pipe 4, so that the exhaust gas treatment effect is better, and it is convenient to reduce the pollution caused by the exhaust gas discharged into the external environment.

[0022] See also Figure 1-Figure 5 The present invention provides a technical solution: the filter device 5 includes a filter plate 51, the inner wall of the filter plate 51 is fixedly connected with a filter screen 52, the bottom of the filter plate 51 is connected with a conical air inlet 53, the bottom of the inner wall of the conical air inlet 53 is fixedly connected with a drive motor 54 through a bracket, the drive shaft of the drive motor 54 is fixedly connected with an arc-shaped cleaning brush 55, the bottom of the filter plate 51 is fixedly connected with a heat conducting sheet 56, the filter plate 51 is arranged inside the purification cylinder 1 and is fixedly connected to the inner wall of the purification cylinder 1, one end of the heat conducting sheet 56 penetrates the purification cylinder 1 and extends To the outside of the purification cylinder 1, the outer wall of the purification cylinder 1 is sleeved and fixedly connected with a heat dissipation wind box 57, the heat dissipation wind box 57 is set in a ring shape, and one end of the heat conducting sheet 56 located outside the purification cylinder 1 extends to the inside of the heat dissipation wind box 57. The two sides of the heat dissipation wind box 57 are respectively fixedly connected with an inlet fan 58 and an exhaust fan 59, and the inlet fan 58 and the exhaust fan 59 are both connected to the inside of the heat dissipation wind box 57. A filtering device 5 is provided. When the exhaust gas enters the inside of the purification cylinder 1, it enters the inside of the filter disc 51 through the conical air inlet 53 at the bottom of the filter disc 51, and then continues By moving upward and passing through the filter 52, larger dust particles can be trapped on the surface of the filter 52 through the filter 52. At the same time, since the filter 52 is an arc-shaped spherical surface, the driving motor 54 drives the arc-shaped cleaning brush 55 to brush and clean the surface of the filter 52, so that the surface of the filter can be kept unobstructed at all times, and the filtering efficiency of the filter can be guaranteed without manual cleaning. At the same time, the dust particles cleaned by the arc-shaped cleaning brush 55 fall between the conical air inlet 53 and the inner wall of the filter plate 51, which is convenient for cleaning the cleaned dust particles. The particles are collected and a heat conducting sheet 56 is provided. Since the exhaust gas discharged from the high tower is usually at a high temperature, it passes through the heat conducting sheet 56 when entering the purification tube 1, and the heat is transferred to the heat conducting sheet 56. The heat conducting sheet 56 transfers the heat to the inside of the heat dissipation wind box 57. The air inlet fan 58 and the exhaust fan 59 on the side of the heat dissipation wind box 57 drive the air flow inside the heat dissipation wind box 57 to circulate quickly, thereby quickly taking away the heat on the heat conducting sheet 56, which is convenient for cooling the exhaust gas entering the purification tube 1 and avoiding the high exhaust gas temperature affecting subsequent treatment.

[0023] See also Figure 1-Figure 7The present invention provides a technical solution: the absorption device 6 includes an absorption pool 61, the bottom of the absorption pool 61 passes through and is fixedly connected to an air inlet pipe 62, the top of the air inlet pipe 62 is connected to a diverter plate 63, the bottom of the diverter plate 63 is rotatably connected to the air inlet pipe 62 through a sealing bearing, the side of the diverter plate 63 is connected to a diverter pipe 64, the end of the diverter pipe 64 away from the air inlet pipe 62 is connected to an air outlet nozzle 65, the side of the air outlet nozzle 65 is provided with an air outlet hole 66, the bottom of the inner wall of the diverter plate 63 is fixedly connected to an arc spring 67, and the end of the arc spring 67 away from the bottom of the inner wall of the diverter plate 63 is fixedly connected A plug 68 is connected, the absorption pool 61 is arranged inside the purification cylinder 1 and is fixedly connected to the inner wall of the purification cylinder 1, the shunt air pipe 64 is provided with multiple groups and is evenly distributed on the side of the shunt plate 63, the bottom of the plug 68 extends to the inside of the air inlet pipe 62, the plug 68 is adapted to the inner diameter of the air inlet pipe 62, the plug 68 is used to block the connection between the air inlet pipe 62 and the shunt plate 63, and an absorption device 6 is provided. When the exhaust gas is filtered by the filter device 5 and enters the inside of the air inlet pipe 62, as the air pressure below the air inlet pipe 62 gradually increases, the air pressure pushes the plug 68 to move upward, so that the plug 68 is released from the top of the intake pipe 62. At this time, the exhaust gas can enter the inside of the diverter plate 63 through the intake pipe 62. The exhaust gas inside the diverter plate 63 is discharged into the absorption liquid inside the absorption tank 61 through the diverter pipe 64 and the outlet hole 66 on the outlet nozzle 65, so that the small particles in the exhaust gas can be adsorbed by the absorbed liquid. At the same time, the ammonia in the exhaust gas can also be dissolved in the absorption liquid, which is convenient for processing the small particles of dust and ammonia in the exhaust gas. The outlet nozzle 65 and the outlet hole 66 are provided. When the gas is discharged from the outlet hole 66, the reverse thrust of the exhaust gas can push the outlet nozzle 65 to carry The dynamic diversion air pipe 64 and the diversion plate 63 rotate, so that the gas outlet nozzle 65 can move in the absorption liquid in the absorption tank 61, so that the gas can contact the absorption liquid at various positions in the absorption tank 61, which is convenient for improving the absorption efficiency. A plug 68 and an arc spring 67 are provided. The plug 68 can be used to increase the air pressure in the space below the absorption device 6 inside the purification cylinder 1, so that the area near the filter device 5 inside the purification cylinder 1 can store more gas, so that the gas can be retained longer near the filter device 5, which is convenient for improving the heat dissipation effect.

[0024] See also Figure 1-Figure 9The present invention provides a technical solution: the purification device 7 includes a purification disk 71, the inner wall of the purification disk 71 is rotatably connected to a rotating plate 72, the rotating plate 72 is provided with a purification hole 73, the inner wall of the purification hole 73 is fixedly connected to a purification net shell 74, the interior of the purification net shell 74 is filled with adsorption filler, the top center of the rotating plate 72 is fixedly connected to a driving shaft of a purification motor 76, the purification motor 76 is fixedly connected to the inner wall of the purification disk 71 through a connecting frame, the top of the purification disk 71 is connected to an outlet pipe 77, the purification disk 71 is arranged inside the purification cylinder 1 and is fixed to the inner wall of the purification cylinder 1 A fixed connection is provided, and the adsorption filler inside the purification net shell 74 is made of sodium hydroxide particles. A purification device 7 is provided. After the tail gas is absorbed by the absorption device 6, it enters the purification disk 71. The material entering the purification disk 71 continues to move upward and is discharged to the top of the rotating plate 72 through the purification hole 73 on the rotating plate 72. When the tail gas passes through the purification hole 73, it reacts with the adsorption filler inside the purification net shell 74, thereby reacting and absorbing the ammonia in the tail gas that is not completely dissolved in the absorption liquid, so that the ammonia in the tail gas can be completely treated, and the purification treatment effect is more thorough.

[0025] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An exhaust gas purification device for a high-tower compound fertilizer granulation tower, comprising a purification cylinder (1) and a support frame (2), wherein the purification cylinder (1) is arranged inside the support frame (2) and fixedly connected to the inner wall of the support frame (2), a processing pipe (3) is connected to one side of the bottom of the purification cylinder (1), and an exhaust pipe (4) is connected to the top of the purification cylinder (1), characterized in that: Also includes a filter device (5), the filter device (5) being arranged inside the purification cylinder (1) and fixedly connected to the inner wall of the purification cylinder (1), the filter device (5) having a mesh filter structure, and being used to filter the exhaust gas entering the purification cylinder (1) through the processing tube (3); An absorption device (6), the absorption device (6) being arranged in a portion of the purification cylinder (1) located above the filter device (5), the absorption device (6) being fixedly connected to the inner wall of the purification cylinder (1), and being used for absorbing small particles in the exhaust gas after being filtered by the filter device (5); A purification device (7) is arranged in a portion of the purification cylinder (1) located above the absorption device (6), the purification device (7) is fixedly connected to the inner wall of the purification cylinder (1), and is used to purify the exhaust gas after being adsorbed by the absorption device (6).

2. The tail gas purification equipment of a high tower compound fertilizer granulation tower according to claim 1 is characterized in that: The filtering device (5) comprises a filter disc (51), the inner wall of the filter disc (51) being fixedly connected to a filter screen (52), the bottom of the filter disc (51) being connected to a conical air inlet (53), the bottom of the inner wall of the conical air inlet (53) being fixedly connected to a drive motor (54) via a bracket, the drive shaft of the drive motor (54) being fixedly connected to an arc-shaped cleaning brush (55), and the bottom of the filter disc (51) being fixedly connected to a heat conducting sheet (56).

3. The tail gas purification equipment of a high tower compound fertilizer granulation tower according to claim 2 is characterized in that: The filter disc (51) is arranged inside the purification cylinder (1) and fixedly connected to the inner wall of the purification cylinder (1); one end of the heat conducting sheet (56) passes through the purification cylinder (1) and extends to the outside of the purification cylinder (1).

4. The tail gas purification equipment of a high tower compound fertilizer granulation tower according to claim 3 is characterized in that: A heat dissipation bellows (57) is sleeved on the outer wall of the purification cylinder (1) and fixedly connected thereto; the heat dissipation bellows (57) is arranged in a ring shape; one end of the heat conducting sheet (56) located outside the purification cylinder (1) extends into the interior of the heat dissipation bellows (57); an inlet fan (58) and an exhaust fan (59) are fixedly connected to both sides of the heat dissipation bellows (57); the inlet fan (58) and the exhaust fan (59) are both in communication with the interior of the heat dissipation bellows (57).

5. The tail gas purification equipment of a high tower compound fertilizer granulation tower according to claim 1 is characterized in that: The absorption device (6) comprises an absorption pool (61), the bottom of the absorption pool (61) penetrates and is fixedly connected to an air inlet pipe (62), the top of the air inlet pipe (62) is connected to a diverter plate (63), the bottom of the diverter plate (63) is rotatably connected to the air inlet pipe (62) via a sealing bearing, the side of the diverter plate (63) is connected to a diverter pipe (64), the end of the diverter pipe (64) away from the air inlet pipe (62) is connected to an air outlet nozzle (65), the side of the air outlet nozzle (65) is provided with an air outlet hole (66), the bottom of the inner wall of the diverter plate (63) is fixedly connected to an arc spring (67), and the end of the arc spring (67) away from the bottom of the inner wall of the diverter plate (63) is fixedly connected to a plug (68).

6. The tail gas purification equipment of a high tower compound fertilizer granulation tower according to claim 5 is characterized in that: The absorption pool (61) is arranged inside the purification cylinder (1) and is fixedly connected to the inner wall of the purification cylinder (1); a plurality of groups of diverter air pipes (64) are arranged and are evenly distributed on the side of the diverter plate (63).

7. The tail gas purification equipment of a high tower compound fertilizer granulation tower according to claim 5 is characterized in that: The bottom of the plug (68) extends into the interior of the air intake pipe (62), the plug (68) is adapted to the inner diameter of the air intake pipe (62), and the plug (68) is used to block the connection between the air intake pipe (62) and the diverter plate (63).

8. The tail gas purification equipment of a high tower compound fertilizer granulation tower according to claim 1 is characterized in that: The purification device (7) comprises a purification disk (71), the inner wall of the purification disk (71) is rotatably connected to a rotating plate (72), the rotating plate (72) is provided with a purification hole (73), the inner wall of the purification hole (73) is fixedly connected to a purification net shell (74), the interior of the purification net shell (74) is filled with adsorption filler, the driving shaft of a purification motor (76) is fixedly connected to the center position of the top of the rotating plate (72), the purification motor (76) is fixedly connected to the inner wall of the purification disk (71) via a connecting frame, and the top of the purification disk (71) is connected to an air outlet pipe (77).

9. The tail gas purification equipment of a high tower compound fertilizer granulation tower according to claim 8, characterized in that: The purification disk (71) is arranged inside the purification cylinder (1) and is fixedly connected to the inner wall of the purification cylinder (1), and the adsorption filler inside the purification net shell (74) is sodium hydroxide particles.

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