Tail gas purification equipment

Abstract

The tail gas purification equipment comprises a tower body (1), a spraying device (2) and a wire mesh demister (3), an air outlet (121) is formed in the top of the tower body, a water outlet (122) and a spraying opening (131) are formed in the side wall of the tower body, a water outlet and an air inlet (133) are formed in the bottom of the side wall of the tower body, and the interior of the tower body is divided into a drying cavity (12) located on the upper portion of the tower body and a purification cavity (13) located on the lower portion of the tower body by a partition plate (11). The middle of the partition plate protrudes upwards to form a communication opening (111). The spraying device comprises a spraying pipe (21) and a spraying head (22), the spraying pipe is horizontally arranged in the dust removal cavity, one end of the spraying pipe is fixedly connected with the spraying opening, the spraying head is fixedly arranged at the other end of the spraying pipe and communicated with the interior of the spraying pipe, a plurality of nozzles (221) are arranged on the spraying head, and the wire mesh demister is arranged in the drying cavity. According to the utility model, dust and impurity gas in the tail gas can be completely removed, so that dry gas is obtained.

Description

Technical Field

[0001] The utility model relates to tail gas purification equipment, and more specifically to the structure of the tail gas purification equipment. Background Art

[0002] Vinyl chloride is an important raw material for the plastics industry. In the process of preparing vinyl chloride, especially in the process of preparing vinyl chloride by the calcium carbide process, the tail gas contains not only vinyl chloride but also unreacted acidic gases such as hydrogen chloride and a small amount of Ca(OH)2 dust. In order to ensure the stable operation of subsequent equipment, a scrubber is needed to purify and remove impurities from the vinyl chloride gas.

[0003] The existing method usually uses a scrubber to cool and purify vinyl chloride gas. In the scrubber, neutralizing water is sprayed for water washing to cool and remove dust, and alkali washing is sprayed to remove acid. The neutralizing water contains an alkali liquid, so that the acidic gas containing chlorine in the vinyl chloride gas is neutralized to remove the acidic impurity gas in the gas. However, after the existing scrubber washes the vinyl chloride gas, the water evaporates due to heat, resulting in water vapor in the vinyl chloride gas, resulting in impure gas. If the hydrogen chloride impurity gas in the gas is not removed cleanly, the gas containing water vapor enters the downstream equipment, causing equipment corrosion, and the impure vinyl chloride gas will affect normal production.

[0004] In addition, due to the large gas flow rate of vinyl chloride gas and the short residence time in the scrubbing tower, if the dust in the vinyl chloride gas discharged after washing in the scrubbing tower is not washed cleanly, the dust in the vinyl chloride gas will cause scaling inside the downstream equipment and affect normal production.

[0005] Moreover, as the alkaline washing and neutralization process continues, the acidity in the neutralized water will continue to rise, and the concentration of the alkaline agent will decrease. The existing equipment requires workers to manually replenish the agent, which affects the gas treatment efficiency and is troublesome to operate.

[0006] The utility model aims to solve the problem that the existing washing tower does not purify vinyl chloride tail gas cleanly, has low processing efficiency and affects normal production. Utility Model Content

[0007] In order to solve the above problems, the utility model provides an exhaust gas purification device, including a tower body 1, a spray device 2 and a wire mesh demister 3. The top of the tower body 1 is provided with an air outlet 121, the side wall is provided with a water outlet 122 and a spray port 131, the bottom of the side wall is provided with a drain port 132 and an air inlet 133, and the interior of the tower body 1 is divided by a partition plate 11 into a drying chamber 12 located at the upper part of the tower body 1 and a purification chamber 13 located at the lower part of the tower body 1. The water outlet 122 is connected to the bottom of the drying chamber 12, and the spray port 131 is connected to the upper part of the purification chamber 13. The partition plate 11 is horizontally arranged and fixedly connected to the inner side wall of the tower body 1, and the middle part is upwardly protruded to form a communication port 111. The spray device 2 includes a spray pipe 21 and a nozzle 22. The spray pipe 21 is horizontally arranged in the dust removal chamber, one end of which is fixedly connected to the spray port 131 and is internally connected. The nozzle 22 is fixedly arranged at the other end of the spray pipe 21 and is internally connected to the spray pipe 21. A plurality of nozzles 221 are arranged on the nozzle 22. The wire mesh demister 3 is arranged in the drying chamber 12.

[0008] When the utility model is used, the neutralized water enters the discharge pipe from the spray port 131, and is evenly sprayed into the purification chamber 13 through the nozzle 22, so that a certain depth of neutralized water is retained at the bottom of the purification chamber 13, and the tail gas enters the neutralized water in the purification chamber 13 from the air inlet 133, and impurities are adsorbed in the neutralized water, and the impurity gas in the tail gas is reacted and removed. In the process of the tail gas rising from the purification chamber 13, the unreacted impurity gas in the tail gas continues to react with the sprayed neutralized water, and the purified tail gas enters the drying chamber 12, is dried by the wire mesh demister 3, and is then discharged, the moisture generated in the drying chamber 12 is discharged from the water outlet 122, and the neutralized water after reacting with the impurity gas in the tail gas is discharged from the drain port 132.

[0009] The utility model sets the air inlet 133 at the bottom of the tower body 1. When in use, a certain depth of neutralized water is stored at the bottom of the purification chamber 13, so that the tail gas entering the purification chamber 13 from the air inlet 133 first enters the neutralized water at the bottom of the purification chamber 13 to react, remove solid impurities and acidic impurity gases, and reacts with the sprayed neutralized water during the rising process of the tail gas, so that a small amount of unreacted acidic gas mixed in the tail gas reacts, and dust and impurity gases in the tail gas are removed, and dry gas is obtained after being dried by the wire mesh demister 3. The utility model can solve the problem that the existing washing tower does not purify the vinyl chloride tail gas cleanly, and the downstream equipment is scaled and corroded inside, which affects the normal production.

[0010] Preferably, a dosing device 4 is further included, which includes a mixing box 41, a stirring member 42, a medicine box 43, a spray pump 44 and a medicine pump 45. The mixing box 41 is arranged on one side of the tower body 1, and a water inlet 411 and a medicine inlet 412 are arranged on the top of the mixing box 41, and a spray outlet 413 is arranged on the bottom. The stirring member 42 is arranged on the mixing box 41 to stir the medicine in the mixing box 41. The medicine box 43 is arranged on one side of the mixing box 41, and a dosing port 431 is arranged on the top of the medicine box 43, and a medicine outlet 432 is arranged on the bottom. The spray pump 44 is connected to the spray outlet 413 and the spray port 131 respectively through pipelines, and the medicine pump 45 is connected to the medicine outlet 432 and the medicine inlet 412 respectively through pipelines.

[0011] A dosing device 4 is provided, and the neutralized water in the mixing box 41 can be transported to the spray pipe 21 through the spray pump 44. When the neutralized water in the mixing box 41 is exhausted, clean water can be added through the water inlet 411, and the agent in the agent box 43 can be transported to the mixing box 41 through the agent pump 45. Under the stirring action of the stirring member 42, the agent and the clean water are evenly mixed to obtain neutralized water, and the waste gas can continue to be sprayed. Automatic drug replenishment is realized to improve the working efficiency.

[0012] Preferably, the stirring member 42 includes a stirring motor 421 and a stirring rod 422. The stirring motor 421 is fixedly arranged on the top of the mixing box 41. The stirring rod 422 is vertically arranged, with the upper end fixedly connected to the rotating shaft of the stirring motor 421 and the lower end inserted into the interior of the mixing box 41, and a stirring blade 423 is arranged at the end.

[0013] The stirring motor 421 drives the stirring rod 422 to rotate, and the stirring blades 423 on the stirring rod 422 can stir the water and medicine in the mixing box 41 to make the medicine mixed evenly.

[0014] Preferably, it also includes a distribution pipe 6 , which is annular and horizontally arranged at the bottom of the purification chamber 13 , and is connected to the air inlet 133 through a connecting pipe 61 . The distribution pipe 6 is provided with a plurality of evenly distributed air outlets 62 .

[0015] The exhaust gas entering from the air inlet 133 can be dispersed through the distribution pipe 6, so that the exhaust gas is evenly distributed in the neutralization water at the bottom of the purification chamber 13, thereby filtering solid impurities in the exhaust gas, reacting the acidic gas in the exhaust gas, and cooling the exhaust gas.

[0016] Preferably, a packing member 5 is further included, and the packing member 5 is arranged in the purification chamber 13, and includes an upper support plate 51, a lower support plate 52 and a packing layer 53. The upper support plate 51 is arranged below the spray device 2 and is fixedly connected to the inner wall of the tower body 1. The lower support plate 52 is arranged below the upper support plate 51 and is fixedly connected to the inner wall of the tower body 1; a plurality of evenly distributed through holes are arranged on the upper support plate 51 and the lower support plate 52, and the packing layer 53 is arranged between the upper support plate 51 and the lower support plate 52.

[0017] A packing member 5 is arranged in the purification chamber 13. The packing layer 53 can increase the contact area between the gas and the liquid, so that the waste gas and the neutralization water can be more fully contacted, the chemical reaction speed can be accelerated, and the acid-base neutralization efficiency in the gas can be improved.

[0018] Preferably, a screen 14 is further included, which is horizontally arranged in the purification chamber 13, fixedly connected to the inner wall of the tower body 1, and located below the filler 5. The screen 14 can filter solid impurities in the gas.

[0019] Preferably, the packing layer 53 is one of ceramsite packing, foamed plastic packing and glass ball packing. The ceramsite packing has a smooth surface, a large volume density and a moderate porosity. Due to its smooth surface, the airflow or liquid flow will rotate when passing through, thereby increasing the contact time and improving the acid-base neutralization efficiency. The foamed plastic packing is light and porous, with a rough surface, good permeability and low resistance. The glass ball packing has strong compressive resistance, moderate specific surface area, smooth surface, easy cleaning and long service life.

[0020] Preferably, a first liquid level meter is provided in the tower body 1 , a second liquid level meter is provided in the mixing box 41 , and a third liquid level meter is provided in the reagent box 43 .

[0021] Preferably, it also includes a base 7 , and the tower body 1 , the mixing box 41 and the reagent box 43 are all fixedly arranged on the base 7 . BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 .Schematic diagram of the overall structure of the exhaust gas purification equipment;

[0023] Figure 2 .Schematic diagram of the internal structure of the tower;

[0024] Figure 3 . Figure 2 The enlarged schematic diagram at A in the middle;

[0025] Figure 4 . Figure 2 Schematic diagram of the middle BB section;

[0026] Figure 5 .Schematic diagram of the internal structure of the mixing box.

[0027] In the figure, 1. tower body, 11. partition plate, 111. connecting port, 12. drying chamber, 121. air outlet, 122. water outlet, 13. purification chamber, 131. spray port, 132. drain port, 133. air inlet, 14. screen, 2. spray device, 21. spray pipe, 22. nozzle, 221. nozzle, 3. wire mesh demister, 4. dosing device, 41. mixing box, 411. water inlet, 412 .Drug inlet, 413. Spray outlet, 42. Stirring element, 421. Stirring motor, 422. Stirring rod, 423. Stirring blade, 43. Drug box, 431. Dosing port, 432. Drug outlet, 44. Spray pump, 45. Drug pump, 5. Packing element, 51. Upper support plate, 52. Lower support plate, 53. Packing layer, 6. Distribution pipe, 61. Connecting pipe, 62. Air outlet, 7. Base, 8. Controller. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0029] like Figure 1 and Figure 2 As shown, the exhaust gas purification equipment includes a tower body 1, a spray device 2, a wire mesh demister 3, a dosing device 4, a filler 5, a distribution pipe 6, a base 7 and a controller 8.

[0030] The tower body 1 is arranged vertically, and the bottom is fixedly arranged on the base 7. An air outlet 121 is arranged on the top of the tower body 1, a water outlet 122 and a spray port 131 are arranged on the side wall, a drain port 132 and an air inlet 133 are arranged at the bottom of the side wall, and the interior of the tower body 1 is divided by a partition plate 11 into a drying chamber 12 located at the upper part of the tower body 1 and a purification chamber 13 located at the lower part of the tower body 1.

[0031] The partition plate 11 is horizontally arranged and fixedly connected to the inner wall of the tower body 1 , and a communication port 111 is formed in the middle portion thereof which protrudes upwards, and the purification chamber 13 and the drying chamber 12 are connected through the communication port 111 .

[0032] The wire mesh demister 3 is fixedly disposed in the drying chamber 12. The wire mesh demister 3 is used to remove water vapor entrained in the gas. The wire mesh demister 3 is a prior art and will not be described in detail here.

[0033] The spray port 131 is communicated with the upper portion of the purification chamber 13 , the drain port 132 and the air inlet 133 are communicated with the bottom portion of the purification chamber 13 , and the air outlet 121 is communicated with the drying chamber 12 .

[0034] The water outlet 122 is communicated with the bottom of the drying chamber 12 and is used to discharge the water generated by the wire mesh demister 3 in the drying chamber 12 .

[0035] The spray port 131, the water outlet 122, the drain port 132 and the air inlet 133 are all provided with valves, and the on-off is controlled by the valves.

[0036] The spray device 2 includes a spray pipe 21 and a spray head 22. The spray pipe 21 is horizontally arranged in the dust removal chamber, and one end is fixedly connected to the spray port 131 and communicates with the inside. The spray head 22 is fixedly arranged at the other end of the spray pipe 21 and communicates with the inside of the spray pipe 21. A plurality of nozzles 221 are evenly arranged on the spray head 22. Figure 3 .

[0037] The packing member 5 is arranged in the purification chamber 13, and includes an upper support plate 51, a lower support plate 52 and a packing layer 53. The upper support plate 51 is arranged below the spray device 2 and is fixedly connected to the inner wall of the tower body 1. The lower support plate 52 is arranged below the upper support plate 51 to maintain a spacing, and the lower support plate 52 is fixedly connected to the inner wall of the tower body 1. The upper support plate 51 and the lower support plate 52 are provided with a plurality of evenly distributed through holes, and the packing layer 53 is arranged between the upper support plate 51 and the lower support plate 52.

[0038] The packing layer 53 is one of ceramsite packing, foamed plastic packing and glass ball packing. The ceramsite packing has a smooth surface, a large volume density and a moderate porosity. Due to its smooth surface, the airflow or liquid flow will rotate when passing through, thereby increasing the contact time and improving the acid-base neutralization efficiency. The foamed plastic packing is light and porous, with a rough surface, good permeability and low resistance. The glass ball packing has strong compressive resistance, moderate specific surface area, smooth surface, easy cleaning and long service life.

[0039] The filler layer 53 can increase the contact area between the waste gas and the liquid, so that the waste gas and the neutralization water can be more fully contacted, the chemical reaction speed can be accelerated, and the acid-base neutralization efficiency in the gas can be improved.

[0040] The purification chamber 13 is provided with a screen 14, a distribution pipe 6 and a first liquid level gauge. The screen 14 is horizontally arranged in the purification chamber 13, fixedly connected to the inner wall of the tower body 1, and located below the filler 5. The screen 14 can filter solid impurities in the gas.

[0041] The distribution pipe 6 is annular and horizontally arranged at the bottom of the purification chamber 13. The distribution pipe 6 is connected to the air inlet 133 through the connecting pipe 61. The distribution pipe 6 is provided with a plurality of evenly distributed air outlets 62. Figure 4 .

[0042] The exhaust gas entering from the air inlet 133 can be dispersed through the distribution pipe 6, so that the exhaust gas is evenly distributed in the neutralization water at the bottom of the purification chamber 13, thereby filtering solid impurities in the exhaust gas, removing acidic gases such as hydrogen chloride in the exhaust gas by reaction, and cooling the exhaust gas.

[0043] like Figure 1 and Figure 5 As shown, the dosing device 4 includes a mixing box 41 , a stirring element 42 , a medicine box 43 , a spray pump 44 and a medicine pump 45 .

[0044] The mixing box 41 is fixedly mounted on the base 7 and is located on one side of the tower body 1 . A water inlet 411 is disposed at the top of the mixing box 41 , a drug inlet 412 is disposed at the top of the side wall, a spray outlet 413 is disposed at the bottom of the side wall, and a second liquid level meter is disposed in the mixing box 41 .

[0045] The water inlet 411 is used to communicate with the fresh water pipeline to add fresh water to the mixing box 41.

[0046] Valves are provided on the drug inlet 412, the water inlet 411 and the spray outlet 413, and the on-off is controlled by the valves.

[0047] The stirring member 42 is arranged on the mixing box 41, and is used for stirring the medicine in the mixing box 41. The stirring member 42 includes a stirring motor 421 and a stirring rod 422. The stirring motor 421 is fixedly arranged on the top of the mixing box 41, and the stirring rod 422 is vertically arranged. The upper end is fixedly connected to the rotating shaft of the stirring motor 421, and the lower end is inserted into the mixing box 41. The lower end is provided with a stirring blade 423.

[0048] The stirring motor 421 drives the stirring rod 422 to rotate, and the stirring blades 423 on the stirring rod 422 can stir the water and medicine in the mixing box 41 to make the medicine mixed evenly.

[0049] The medicine box 43 is fixedly arranged on the base 7 and is located at one side of the mixing box 41 . A medicine adding port 431 is arranged on the top of the medicine box 43 , a medicine outlet 432 is arranged on the bottom, and a third liquid level meter is arranged in the medicine box 43 .

[0050] A valve is provided on the medicine outlet 432, and the on-off is controlled by the valve.

[0051] The spray pump 44 is connected to the spray outlet 413 and the spray port 131 through pipelines, and the medicine pump 45 is connected to the medicine outlet 432 and the medicine inlet 412 through pipelines.

[0052] The neutralized water in the mixing box 41 can be transported to the spray pipe 21 through the spray pump 44. When the neutralized water in the mixing box 41 is used up, clean water can be added through the water inlet 411. The medicine in the medicine box 43 can be transported to the mixing box 41 through the medicine pump 45. Under the stirring action of the stirring element 42, the medicine and clean water are evenly mixed to obtain neutralized water, and the exhaust gas can continue to be sprayed, thereby realizing automatic medicine replenishment and improving work efficiency.

[0053] The valves in the utility model are all electromagnetic valves. The controller 8 is electrically connected with the first liquid level meter, the second liquid level meter, the third liquid level meter, the stirring motor 421, the spray pump 44, the medicine pump 45 and each valve to control the automatic operation of the equipment.

[0054] When the utility model is used, fresh water is added into the mixing box 41 from the water inlet 411, a certain amount of medicine in the medicine box 43 is added into the mixing box 41 through the medicine pump 45, and the fresh water and medicine in the mixing box 41 are stirred by the stirring device so that the fresh water and medicine are evenly mixed to obtain neutralized water. The spray pump 44 is turned on, and the neutralized water is input from the mixing box 41 into the discharge pipe, and is evenly sprayed into the purification chamber 13 through the nozzle 22, so that a certain depth of neutralized water is always preserved at the bottom of the purification chamber 13. The tail gas enters the neutralized water at the bottom of the purification chamber 13 from the air inlet 133, and impurities are adsorbed and neutralized in the neutralized water, and the impurity gas and solid impurities in the tail gas are reacted and removed. In the process of the tail gas rising from the purification chamber 13, the unreacted impurity gas in the tail gas continues to react with the sprayed neutralized water, and the purified tail gas enters the drying chamber 12 and is dried by the wire mesh demister 3 before being discharged. The moisture generated in the drying chamber 12 is discharged from the water outlet 122 at regular intervals, and the neutralized water at the bottom of the purification chamber 13 after reacting with the impurity gas in the tail gas is discharged from the drain port 132 .

[0055] The utility model sets the air inlet 133 at the bottom of the tower body 1. When in use, a certain depth of neutralized water is stored at the bottom of the purification chamber 13, so that the tail gas entering the purification chamber 13 from the air inlet 133 first enters the neutralized water at the bottom of the purification chamber 13 to react, remove solid impurities and acidic gases, and reacts with the sprayed neutralized water during the rising process of the tail gas, so that a small amount of unreacted acidic gas mixed in the tail gas reacts, and dust and impurity gases in the tail gas are removed, and dry gas is obtained after being dried by the wire mesh demister 3. It can solve the problem that the existing washing tower does not cleanly purify the tail gas of vinyl chloride, and the downstream equipment is scaled and corroded inside, which affects normal production.

[0056] A dosing device 4 is provided, and the neutralized water in the mixing box 41 can be transported to the spray pipe 21 through the spray pump 44. When the neutralized water in the mixing box 41 is exhausted, clean water can be added through the water inlet 411, and the agent in the agent box 43 can be transported to the mixing box 41 through the agent pump 45. Under the stirring action of the stirring member 42, the agent and the clean water are evenly mixed to obtain neutralized water, and the waste gas can continue to be sprayed. Automatic drug replenishment is realized to improve the working efficiency.

[0057] The exhaust gas entering from the air inlet 133 can be dispersed through the distribution pipe 6, so that the exhaust gas is evenly distributed in the neutralization water at the bottom of the purification chamber 13, thereby filtering solid impurities in the exhaust gas, reacting the acidic gas in the exhaust gas, and cooling the exhaust gas.

[0058] A packing 5 is arranged in the purification chamber 13, and the contact area between the gas and the liquid can be increased through the packing layer 53, so that the waste gas and the neutralization water can be more fully contacted, the chemical reaction speed can be accelerated, and the acid-base neutralization efficiency in the gas can be improved. The solid impurities in the gas can be filtered through the screen 14.

[0059] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.

Claims

1. Tail gas purification equipment, characterized in that: It comprises a tower body (1), a spray device (2) and a wire mesh demister (3). The top of the tower body (1) is provided with an air outlet (121), the side wall is provided with a water outlet (122) and a spray port (131), the bottom of the side wall is provided with a drain port (132) and an air inlet (133), and the interior of the tower body (1) is divided by a partition plate (11) into a drying chamber (12) located at the upper part of the tower body (1) and a purification chamber (13) located at the lower part of the tower body (1); The water outlet (122) is in communication with the bottom of the drying chamber (12); The spray port (131) is in communication with the upper portion of the purification chamber (13); The partition plate (11) is arranged horizontally and fixedly connected to the inner wall of the tower body (1), and has a middle portion that protrudes upward to form a communication opening (111); The spray device (2) comprises a spray pipe (21) and a spray head (22). The spray pipe (21) is horizontally arranged in the dust removal chamber, one end of which is fixedly connected to the spray port (131) and is internally communicated; The spray head (22) is fixedly arranged at the other end of the spray pipe (21), is communicated with the inside of the spray pipe (21), and is provided with a plurality of nozzles (221); The wire mesh demister (3) is arranged in the drying chamber (12).

2. The exhaust gas purification equipment according to claim 1, characterized in that: It also includes a dosing device (4), The dosing device (4) comprises a mixing box (41), a stirring element (42), a medicine box (43), a spray pump (44) and a medicine pump (45). The mixing box (41) is arranged on one side of the tower body (1); a water inlet (411) and a drug inlet (412) are arranged on the top of the mixing box (41); and a spray outlet (413) is arranged on the bottom; The stirring member (42) is arranged on the mixing box (41) and is used to stir the medicine in the mixing box (41); The medicine box (43) is arranged on one side of the mixing box (41), and a medicine adding port (431) is arranged on the top of the medicine box (43), and a medicine outlet (432) is arranged on the bottom; The spray pump (44) is connected to the spray outlet (413) and the spray port (131) through pipelines respectively; The medicine pump (45) is connected to the medicine outlet (432) and the medicine inlet (412) respectively through pipelines.

3. The exhaust gas purification equipment according to claim 2, characterized in that: The stirring member (42) comprises a stirring motor (421) and a stirring rod (422). The stirring motor (421) is fixedly arranged on the top of the mixing box (41); The stirring rod (422) is arranged vertically, with the upper end fixedly connected to the rotating shaft of the stirring motor (421), the lower end inserted into the mixing box (41), and the end portion being provided with a stirring blade (423).

4. The tail gas purification equipment according to claim 3, characterized in that: It also includes a distribution pipe (6), The distribution pipe (6) is annular and horizontally arranged at the bottom of the purification chamber (13), and is connected to the air inlet (133) through a connecting pipe (61). The distribution pipe (6) is provided with a plurality of evenly distributed air outlets (62).

5. The tail gas purification equipment according to claim 4, characterized in that: Also includes a packing member (5), The packing member (5) is arranged in the purification chamber (13), and comprises an upper support plate (51), a lower support plate (52) and a packing layer (53). The upper support plate (51) is arranged below the spray device (2) and is fixedly connected to the inner wall of the tower body (1); The lower support plate (52) is arranged below the upper support plate (51) and is fixedly connected to the inner wall of the tower body (1); The upper support plate (51) and the lower support plate (52) are both provided with a plurality of evenly distributed through holes; The filler layer (53) is arranged between the upper support plate (51) and the lower support plate (52).

6. The tail gas purification equipment according to claim 5, characterized in that: Also includes a screen (14), The screen (14) is horizontally arranged in the purification chamber (13), fixedly connected to the inner wall of the tower body (1), and located below the filler (5).

7. The exhaust gas purification device according to claim 6, characterized in that: The filler layer (53) is one of ceramsite filler, foam plastic filler and glass ball filler.

8. The exhaust gas purification device according to claim 7, characterized in that: A first liquid level gauge is arranged in the tower body (1). A second liquid level meter is arranged in the mixing box (41); A third liquid level gauge is arranged in the medicine box (43).

9. The exhaust gas purification device according to any one of claims 1 to 8, characterized in that: It also comprises a base (7), on which the tower body (1), the mixing box (41) and the reagent box (43) are all fixedly arranged.

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