Ethyl sulfamide waste gas environmental protection absorption tower with gas-liquid countercurrent spray structure

Abstract

This invention relates to the field of waste gas absorption tower technology, specifically to an ethyl thiouric acid waste gas environmental protection absorption tower with a gas-liquid countercurrent spray structure. The tower includes a tower body, comprising an absorption tower body and several layers of packing material arranged vertically within the absorption tower body. A secondary spray mechanism includes several fixing rings fixedly installed inside the absorption tower body, each corresponding to one of the packing material. These fixing rings are located below their respective packing materials, and a liquid-receiving and aeration component is installed inside each fixing ring. The liquid-receiving and aeration component collects the absorbent liquid dripping from the bottom of the packing material and then transports the collected absorbent liquid to the spray component. The spray component atomizes and sprays the absorbent liquid a second time, increasing the contact area between the absorbent liquid and the waste gas, improving the absorption effect, and preventing the upper layer of absorbent liquid from dripping as large droplets onto the lower packing material.

Description

Technical Field

[0001] This invention relates to the field of waste gas absorption tower technology, specifically to an ethyl thiouric acid ester waste gas environmental protection absorption tower with a gas-liquid countercurrent spray structure. Background Technology

[0002] Ethylthiocyanate is an organosulfur compound, appearing as a pale yellow to brown oily liquid with a pungent odor. It is soluble in benzene, ethanol, diethyl ether, and petroleum ether, and slightly soluble in water. Its main use is as a collector for sulfide ores, exhibiting strong collecting activity against pyrite, chalcocite, and activated sphalerite. It can also be used as a selective collector for separating copper, lead, zinc, and other sulfide ores.

[0003] Ethyl thiocyanate waste gas is a sulfur-containing organic waste gas generated during the production and use of ethyl thiocyanate. Its main components are ethyl thiocyanate vapor, methanethiol, ethylamine, isopropanol, etc., and it has irritating odor, toxicity, flammability, and explosiveness. It requires strict collection and purification treatment. Generally, a packed tower / spray tower is used for countercurrent absorption. In existing spray towers, the absorbent liquid is sprayed from top to bottom while the ethyl thiocyanate waste gas flows from bottom to top. The absorption of the waste gas is achieved through the countercurrent flow of the absorbent liquid and the waste gas. However, in existing spray towers, when the absorbent liquid falls onto the packing... When the packing layer is in use, the atomized absorbent liquid will collect into water droplets and drip from the packing layer. The contact area between the dripping absorbent liquid and the waste gas is small, and the buoyancy effect of the waste gas is also small, making it difficult to fully absorb the waste gas during the falling process. The absorption efficiency needs to be further improved. When there are multiple packing layers in the spray tower, the absorbent liquid dripping from the upper packing layer will fall onto the packing layer below. Moreover, the lower the packing layer, the more and larger the droplets it bears. Large droplets are prone to forming channels on the packing, damaging the liquid film on the surface of the packing and affecting the absorption of waste gas by the absorbent liquid. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides an environmentally friendly absorption tower for ethyl thiocyanate waste gas with a gas-liquid countercurrent spray structure, comprising a tower body structure, wherein the tower body structure includes an absorption tower body and several layers of packing material filled inside the absorption tower body and distributed vertically.

[0005] The secondary spraying mechanism includes several fixing rings fixedly installed inside the absorption tower body and corresponding one-to-one with the packing material. The fixing rings are located below the corresponding packing material. A liquid receiving and venting component is installed inside the fixing ring. The liquid receiving and venting component is used to receive the absorbent dripping from the bottom of the packing material without obstructing the upward flow of waste gas. A spraying component is installed below the fixing ring. The spraying component receives the absorbent collected by the liquid receiving and venting component and atomizes and sprays the absorbent downward.

[0006] The moving packing mechanism includes a packing disc rotatably installed inside the absorption tower body, the packing being placed on the packing disc, a support assembly located above the packing disc being installed inside the absorption tower body, and a stirring rod for agitating the packing being installed on the support assembly.

[0007] In one possible implementation, the tower body structure further includes an air inlet fixedly installed at the bottom left side of the absorption tower body, an air outlet fixedly installed at the top of the absorption tower body, a spray head fixedly installed inside the absorption tower body corresponding one-to-one with the packing and located above the corresponding packing, and a circulating liquid supply assembly for supplying absorbent liquid to the spray head fixedly installed on the right side of the absorption tower body.

[0008] In one possible implementation, the spray assembly includes a collection pipe fixedly installed below a fixing ring, a support plate fixedly connected to the bottom of the collection pipe, a turbine and an atomizing disc rotatably mounted inside the support plate, and the atomizing disc fixedly installed at the bottom of the turbine.

[0009] In one possible implementation, the liquid-receiving and ventilating assembly includes a plurality of liquid-receiving tiles fixedly installed on the inner wall of a fixed ring. The liquid-receiving tiles are V-shaped, and the plurality of liquid-receiving tiles are equidistantly distributed on the left and right, with adjacent liquid-receiving tiles alternating vertically. The edges of the vertical projections of adjacent liquid-receiving tiles overlap, and a channel for exhaust gas to pass through is reserved between them. The top of the liquid collection pipe is connected to the liquid-receiving tiles.

[0010] In one possible implementation, the liquid-receiving and ventilating assembly includes a plurality of liquid-receiving tiles and ridge tiles that are fixedly installed on the inner ring wall of the fixed ring and are equidistantly distributed on the left and right. The liquid-receiving tiles are V-shaped and the ridge tiles are inverted V-shaped. The liquid-receiving tiles and ridge tiles are alternately arranged on the left and right, with the ridge tiles located above the liquid-receiving tiles. An inclined plate is also provided between adjacent liquid-receiving tiles and ridge tiles. The inclined plate is fixedly installed on the inner ring wall of the fixed ring. The edge of the vertical projection of the inclined plate overlaps with the vertical projection of the liquid-receiving tiles and the ridge tiles, respectively. The top of the liquid collecting pipe is connected to the liquid-receiving tiles.

[0011] In one possible implementation, the liquid receiving and venting assembly includes a liquid receiving hopper fixedly installed on the inner wall of a fixed ring. The liquid receiving hopper has an upward protrusion in the middle and is provided with a vent hole. A hat-shaped baffle is provided above the vent hole. Several demister plates are evenly installed circumferentially between the baffle and the liquid receiving hopper. The top of the liquid collecting pipe is connected to the liquid receiving hopper.

[0012] In one possible implementation, a shaft is rotatably mounted inside the absorption tower body. The bottom end of the shaft rotatably passes through several packing materials and is coaxially and fixedly connected to a turbine and an atomizing disc, respectively. A drive motor is fixedly mounted on the top of the tower body mechanism, and the bottom of the output shaft of the drive motor is fixedly connected to the top of the shaft through a coupling.

[0013] In one possible implementation, the support assembly includes a coaxial inner support ring and an outer support ring connected by a connecting rod. The outer support ring is fixedly installed on the inner ring wall of the tower body mechanism. The stirring rod is rotatably installed between the inner and outer support rings. One end of the stirring rod near the central axis of the inner support ring is connected to the shaft via a fixedly installed bevel gear set. The packing disc is coaxially and fixedly connected to the shaft.

[0014] The beneficial effects of the present invention are as follows: 1. The liquid receiving and venting component of the present invention collects the absorbent liquid dripping from the bottom of the packing, and then the liquid receiving and venting component transports the collected absorbent liquid to the spraying component. The spraying component atomizes and sprays the absorbent liquid a second time, which can increase the contact area between the absorbent liquid and the waste gas, improve the absorption effect of the absorbent liquid, and also prevent the upper layer of absorbent liquid from dripping onto the lower layer of packing in the form of large water droplets, prevent the absorbent liquid from forming channels on the packing, affecting the formation of the liquid film on the packing, and ensuring that the absorbent liquid fully absorbs the waste gas on the packing.

[0015] 2. This invention uses a rotating packing disc to drive the packing to rotate, and at the same time, a stirring rod to stir the packing. This allows the packing on the packing disc to move continuously, increasing the collision of the packing and thus increasing the disturbance of the liquid film on the surface of the packing. This breaks down the old liquid film and forms a new liquid film, improving mass transfer efficiency and preventing the liquid film on the surface of the packing from becoming saturated or stagnant. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a front sectional view of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the secondary spraying mechanism of the present invention.

[0019] Figure 4 This is a three-dimensional structural schematic diagram of the first embodiment of the present invention.

[0020] Figure 5 This is a three-dimensional structural schematic diagram of the second embodiment of the present invention.

[0021] Figure 6 This is a partial cross-sectional view of the third embodiment of the present invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the spray assembly of the present invention.

[0023] Figure 8 This is a three-dimensional structural schematic diagram of the moving packing mechanism of the present invention.

[0024] Figure 9This is a three-dimensional structural diagram of the support component of the present invention.

[0025] In the diagram: 1. Tower body mechanism; 11. Absorption tower body; 12. Air inlet; 13. Air outlet; 14. Packing; 15. Spray head; 16. Circulating liquid supply assembly; 2. Secondary spraying mechanism; 21. Fixing ring; 22. Liquid receiving and venting assembly; 221. Liquid receiving tile; 222. Ridge tile; 223. Inclined plate; 224. Liquid receiving hopper; 225. Ventilation hole; 226. Cover; 227. Demisting plate; 23. Spraying assembly; 231. Liquid collecting pipe; 232. Support plate; 233. Turbine; 234. Atomizing plate; 24. Shaft; 25. Drive motor; 3. Moving packing mechanism; 31. Packing plate; 32. Support assembly; 321. Inner support ring; 322. Outer support ring; 33. Stirring rod; 331. Bevel gear set. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Please see Figure 1 - Figure 9 An environmental protection absorption tower for ethyl thiocyanate waste gas with a gas-liquid countercurrent spray structure includes a tower body 1, which includes an absorption tower body 11 and several layers of packing material 14 filled inside the absorption tower body 11 and distributed vertically.

[0028] The secondary spraying mechanism 2 includes several fixing rings 21 fixedly installed inside the absorption tower body 11 and corresponding one-to-one with the packing 14. The fixing rings 21 are located below the corresponding packing 14. Liquid receiving and ventilating components 22 are installed inside the fixing rings 21. The liquid receiving and ventilating components 22 are used to receive the absorbent dripping from the bottom of the packing 14 without obstructing the upward flow of exhaust gas. A spraying component 23 is installed below the fixing rings 21. The spraying component 23 receives the absorbent collected by the liquid receiving and ventilating components 22 and atomizes and sprays the absorbent downward.

[0029] The moving packing mechanism 3 includes a packing disc 31 rotatably installed inside the absorption tower body 11. The packing disc 31 is located above the corresponding fixing ring 21. The packing 14 is placed on the packing disc 31. A support assembly 32 located above the packing disc 31 is installed inside the absorption tower body 11. A stirring rod 33 for agitating the packing is installed on the support assembly 32.

[0030] Please see Figure 1 - Figure 9 The tower body mechanism 1 also includes an air inlet 12 fixedly installed at the bottom left side of the absorption tower body 11, an air outlet 13 fixedly installed at the top of the absorption tower body 11, and spray heads 15 fixedly installed inside the absorption tower body 11, each corresponding to and above the corresponding packing 14. A circulating liquid supply assembly 16 for supplying absorbent liquid to the spray heads 15 is fixedly installed on the right side of the absorption tower body 11. It should be noted that both the spray heads 15 and the circulating liquid supply assembly 16 are existing technologies.

[0031] In practical use, the absorbent liquid at the bottom of the absorption tower body 11 is transported to the spray head 15 through the circulating liquid supply component 16 and sprayed downwards. The waste gas is transported into the interior of the absorption tower body 11 from the air inlet 12 and flows upwards, so that the waste gas and the absorbent liquid are absorbed by convection. The gas-liquid countercurrent increases the residence time of the absorbent liquid and improves the absorption efficiency of the absorbent liquid on the waste gas. When the absorbent liquid falls onto the packing 14, the absorbent liquid will form a liquid film on the packing 14. When the waste gas passes through the packing 14, it can be absorbed more fully.

[0032] After passing through the packing 14, the absorbent liquid collects into large droplets and drips downwards. At this time, the liquid receiving and venting component 22 collects the dripping absorbent liquid and then transports the collected absorbent liquid to the spraying component 23. The spraying component 23 atomizes and sprays the absorbent liquid a second time, which can increase the contact area between the absorbent liquid and the waste gas, improve the absorption effect of the absorbent liquid, and also prevent the upper layer of absorbent liquid from dripping into the lower layer of packing 14 in the form of large droplets. This prevents the absorbent liquid from forming channels on the packing 14, which would affect the formation of the liquid film on the packing 14, and ensures that the absorbent liquid fully absorbs the waste gas on the packing 14.

[0033] The rotating packing disc 31 drives the packing 14 to rotate, and at the same time, the stirring rod 33 stirs the packing 14, which makes the packing 14 on the packing disc 31 move continuously, increases the collision of the packing 14, thereby increasing the disturbance of the liquid film on the surface of the packing 14, destroying the old liquid film, forming a new liquid film, improving the mass transfer efficiency, and avoiding saturation and stagnation of the liquid film on the surface of the packing 14.

[0034] Please see Figure 3 and Figure 7 The spray assembly 23 includes a liquid collection pipe 231 fixedly installed below the fixing ring 21. A support plate 232 is fixedly connected to the bottom of the liquid collection pipe 231. A turbine 233 and an atomizing plate 234 are rotatably installed inside the support plate 232. The atomizing plate 234 is fixedly installed at the bottom of the turbine 233.

[0035] In practical use, the absorbent collected by the liquid receiving and venting component 22 is transported to the liquid collecting pipe 231, and then the liquid collecting pipe 231 transports the collected absorbent to the support plate 232. The rotating turbine 233 pushes the absorbent downward, which can accelerate the flow of the absorbent and prevent the liquid receiving and venting component 22 from collecting too much absorbent and causing overflow. After that, the absorbent flows downward into the atomizing plate 234. The rotating atomizing plate 234 causes the absorbent to be atomized and sprayed a second time under the action of centrifugal force, which prevents the absorbent from dripping onto the lower packing 14 in the form of large water droplets.

[0036] Example 1 Please see Figure 3 and Figure 4 The liquid receiving and ventilating component 22 includes several liquid receiving tiles 221 fixedly installed on the inner ring wall of the fixing ring 21. The liquid receiving tiles 221 are V-shaped. The several liquid receiving tiles 221 are distributed at equal intervals on the left and right, and adjacent liquid receiving tiles 221 are alternately arranged vertically. The edges of the vertical projections of adjacent liquid receiving tiles 221 overlap, and a channel for exhaust gas to pass through is reserved between them. The top of the liquid collecting pipe 231 is connected to the liquid receiving tile 221.

[0037] In practical use, in this embodiment, the absorbent dripping from the packing 14 is blocked by the receiving tile 221, causing the absorbent to fall onto the receiving tile 221 for collection. Then, the receiving tile 221 transports the collected absorbent to the collecting pipe 231, so that the atomizing disc 234 performs secondary atomization spraying on the absorbent, preventing the absorbent from dripping onto the lower packing 14 in the form of large water droplets. Meanwhile, the exhaust gas flows upward through the channel between adjacent receiving tiles 221, avoiding obstruction of the exhaust gas flow. At the same time, the staggered receiving tiles 221 also have a certain demisting effect. When the exhaust gas carrying water mist flows upward and passes through the receiving tiles 221, the staggered receiving tiles 221 can form a bent channel, causing the water mist to come into contact with the receiving tiles 221, causing the water mist to gather into large droplets on the surface of the receiving tiles 221 and fall, preventing the water mist from flowing upward.

[0038] Example 2 Please see Figure 5 The liquid receiving and ventilating component 22 includes several liquid receiving tiles 221 and ridge tiles 222 that are fixedly installed on the inner ring wall of the fixing ring 21 and are equidistantly distributed on the left and right. The liquid receiving tiles 221 are V-shaped and the ridge tiles 222 are inverted V-shaped. The liquid receiving tiles 221 and ridge tiles 222 are alternately arranged on the left and right, and the ridge tiles 222 are located above the liquid receiving tiles 221. An inclined plate 223 is also provided between adjacent liquid receiving tiles 221 and ridge tiles 222. The inclined plate 223 is fixedly installed on the inner ring wall of the fixing ring 21. The edge of the vertical projection of the inclined plate 223 overlaps with the vertical projection of the liquid receiving tiles 221 and ridge tiles 222 respectively. Channels for exhaust gas to pass through are reserved between the liquid receiving tiles 221, ridge tiles 222 and inclined plate 223. The top of the liquid collecting pipe 231 is connected to the liquid receiving tiles 221.

[0039] In practical use, in this embodiment, the absorbent dripping from the packing 14 is blocked by the receiving tile 221, the ridge tile 222, and the inclined plate 223. The absorbent on the ridge tile 222 and the inclined plate 223 slides down the slope of the ridge tile 222 and the inclined plate 223 onto the receiving tile 221, so that the absorbent collects on the receiving tile 221. Then the receiving tile 221 transports the collected absorbent to the collecting pipe 231, so that the atomizing disc 234 performs secondary atomization spraying on the absorbent, preventing the absorbent from dripping onto the lower packing 14 in the form of large water droplets. Meanwhile, the exhaust gas flows upward from the channel between the receiving tile 221, the ridge tile 222, and the inclined plate 223, so as to avoid obstructing the flow of exhaust gas.

[0040] Meanwhile, when the exhaust gas carries water mist upward and passes through the channel between the liquid receiving tile 221, the ridge tile 222 and the inclined plate 223, the water mist will come into contact with the surfaces of the ridge tile 222 and the inclined plate 223, causing the water mist to gather into large droplets on the surfaces of the ridge tile 222 and the inclined plate 223. Since the ridge tile 222 and the inclined plate 223 are located above the liquid receiving tile 221, the liquid will slide down the lower surface of the ridge tile 222 and the inclined plate 223 into the liquid receiving tile 221, preventing the droplets from dripping downward.

[0041] Example 3 Please see Figure 6 The liquid receiving and venting assembly 22 includes a liquid receiving hopper 224 fixedly installed on the inner ring wall of the fixing ring 21. The middle part of the liquid receiving hopper 224 protrudes upward and has a vent hole 225. A cap 226 in the shape of a hat is provided above the vent hole 225. Several demisting plates 227 are evenly installed circumferentially between the cap 226 and the liquid receiving hopper 224. The top of the liquid collecting pipe 231 is connected to the liquid receiving hopper 224.

[0042] In practical use, in this embodiment, the absorbent dripping from the filler 14 falls onto the receiving hopper 224 and then slides down the upper surface of the receiving hopper 224 to the edge. After that, the absorbent flows into the collecting pipe 231, so that the atomizing disc 234 performs secondary atomization spraying on the absorbent. The exhaust gas flows upward from the vent 225. The demister plate 227 between the baffle 226 and the receiving hopper 224 can play a demisting role. When the water mist comes into contact with the surface of the demister plate 227, it will form droplets, and then the droplets will slide down onto the receiving hopper 224, preventing the droplets from dripping downward.

[0043] Please see Figure 2 , Figure 8 and Figure 9The absorption tower body 11 has a rotating shaft 24 inside. The bottom end of the shaft 24 rotates through several packing materials 14 and is coaxially and fixedly connected to the turbine 233 and the atomizing disc 234 respectively. A drive motor 25 is fixedly installed at the top of the tower body mechanism 1. The bottom of the output shaft of the drive motor 25 is fixedly connected to the top of the shaft 24 through a coupling. It should be noted that the atomizing disc 234 is a centrifugal atomizing disc, which is existing technology.

[0044] In practical use, the drive motor 25 drives the shaft 24 to rotate, and the shaft 24 drives the turbine 233 and the atomizing disk 234 to rotate. The turbine 233 delivers the absorbent liquid downward to the atomizing disk 234. The high-speed rotation of the atomizing disk 234 generates centrifugal force, which causes the liquid to extend radially along the disk to form a uniform liquid film. When the liquid film leaves the atomizing disk 234, the centrifugal force tears the absorbent liquid into water mist, realizing secondary atomization spraying of the absorbent liquid.

[0045] Please see Figure 8 and Figure 9 The support assembly 32 includes an inner support ring 321 and an outer support ring 322 that are coaxial. The inner support ring 321 and the outer support ring 322 are connected by a connecting rod. The outer support ring 322 is fixedly installed on the inner ring wall of the tower body mechanism 1. The stirring rod 33 is rotatably installed between the inner support ring 321 and the outer support ring 322. One end of the stirring rod 33 near the central axis of the inner support ring 321 is connected to the shaft 24 through a fixedly installed bevel gear set 331. The packing disc 31 is coaxially fixedly connected to the shaft 24.

[0046] In practical use, when the shaft 24 rotates, it drives the packing disc 31 to rotate together, causing the packing disc 31 to drive the packing 14 to rotate continuously, causing the packing 14 to collide continuously. At the same time, the shaft 24 drives the stirring rod 33 to rotate through the bevel gear set 331, and the stirring rod 33 stirs and turns the packing 14, thereby increasing the disturbance of the liquid film on the surface of the packing 14, breaking the old liquid film, forming a new liquid film, and improving the mass transfer efficiency.

[0047] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An environmentally friendly absorption tower for ethyl thiocyanate waste gas with a gas-liquid countercurrent spray structure, characterized in that: It includes a tower body mechanism (1), which includes an absorption tower body (11) and several layers of packing material (14) filled inside the absorption tower body (11) and distributed vertically. The secondary spraying mechanism (2) includes several fixed rings (21) fixedly installed inside the absorption tower body (11) and corresponding one-to-one with the packing (14). The fixed rings (21) are located below the corresponding packing (14). A liquid receiving and air permeable component (22) is installed inside the fixed rings (21). The liquid receiving and air permeable component (22) is used to receive the absorbent liquid dripping from the bottom of the packing (14) without obstructing the upward flow of waste gas. A spraying component (23) is installed below the fixed rings (21). The spraying component (23) is used to receive the absorbent liquid received by the liquid receiving and air permeable component (22) and atomize and spray the absorbent liquid downward. The moving packing mechanism (3) includes a packing disc (31) rotatably installed inside the absorption tower body (11), the packing (14) is placed on the packing disc (31), and a support assembly (32) located above the packing disc (31) is installed inside the absorption tower body (11), and a stirring rod (33) for agitating the packing is installed on the support assembly (32).

2. The ethyl thiouric acid ester waste gas environmental protection absorption tower with a gas-liquid countercurrent spray structure according to claim 1, characterized in that: The tower body mechanism (1) also includes an air inlet (12) fixedly installed at the bottom left side of the absorption tower body (11), an air outlet (13) fixedly installed at the top of the absorption tower body (11), a spray head (15) fixedly installed inside the absorption tower body (11) corresponding to the packing (14) and located above the corresponding packing (14), and a circulating liquid supply assembly (16) for supplying absorbent liquid to the spray head (15) fixedly installed on the right side of the absorption tower body (11).

3. The ethyl thiouric acid ester waste gas environmental protection absorption tower with a gas-liquid countercurrent spray structure according to claim 1, characterized in that: The spray assembly (23) includes a collection pipe (231) fixedly installed below the fixing ring (21). A support plate (232) is fixedly connected to the bottom of the collection pipe (231). A turbine (233) and an atomizing plate (234) are rotatably installed inside the support plate (232). The atomizing plate (234) is fixedly installed at the bottom of the turbine (233).

4. The ethyl thiouric acid ester waste gas environmental protection absorption tower with a gas-liquid countercurrent spray structure according to claim 3, characterized in that: The liquid receiving and ventilating component (22) includes several liquid receiving tiles (221) fixedly installed on the inner ring wall of the fixing ring (21). The liquid receiving tiles (221) are V-shaped. The several liquid receiving tiles (221) are distributed equidistantly from left to right and adjacent liquid receiving tiles (221) are alternately arranged vertically. The edges of the vertical projections of adjacent liquid receiving tiles (221) overlap and a channel for exhaust gas to pass through is reserved between them. The top of the liquid collecting pipe (231) is connected to the liquid receiving tiles (221).

5. The ethyl thiouric acid ester waste gas environmental protection absorption tower with a gas-liquid countercurrent spray structure according to claim 3, characterized in that: The liquid-receiving and breathable assembly (22) includes a plurality of liquid-receiving tiles (221) and ridge tiles (222) that are fixedly installed on the inner ring wall of the fixed ring (21) and are equidistantly distributed on the left and right. The liquid-receiving tiles (221) are V-shaped and the ridge tiles (222) are inverted V-shaped. The liquid-receiving tiles (221) and ridge tiles (222) are alternately arranged on the left and right, and the ridge tiles (222) are located above the liquid-receiving tiles (221). An inclined plate (223) is also provided between adjacent liquid-receiving tiles (221) and ridge tiles (222). The inclined plate (223) is fixedly installed on the inner ring wall of the fixed ring (21). The edge of the vertical projection of the inclined plate (223) overlaps with the vertical projection of the liquid-receiving tiles (221) and ridge tiles (222), respectively. The top of the liquid collection pipe (231) is connected to the liquid-receiving tiles (221).

6. The ethyl thiouric acid ester waste gas environmental protection absorption tower with a gas-liquid countercurrent spray structure according to claim 3, characterized in that: The liquid receiving and venting assembly (22) includes a liquid receiving hopper (224) fixedly installed on the inner ring wall of the fixing ring (21). The liquid receiving hopper (224) is raised upward in the middle and has a vent hole (225). A cap (226) in the shape of a hat is provided above the vent hole (225). Several demisting plates (227) are evenly installed circumferentially between the cap (226) and the liquid receiving hopper (224). The top of the liquid collecting pipe (231) is connected to the liquid receiving hopper (224).

7. The ethyl thiouric acid ester waste gas environmental protection absorption tower with a gas-liquid countercurrent spray structure according to claim 3, characterized in that: The absorption tower body (11) is internally mounted with a shaft (24). The bottom end of the shaft (24) rotates through several packings (14) and is then coaxially and fixedly connected to the turbine (233) and the atomizing disc (234) respectively. The top of the tower body mechanism (1) is fixedly mounted with a drive motor (25). The bottom of the output shaft of the drive motor (25) is fixedly connected to the top of the shaft (24) through a coupling.

8. The ethyl thiouric acid ester waste gas environmental protection absorption tower with a gas-liquid countercurrent spray structure according to claim 7, characterized in that: The support assembly (32) includes an inner support ring (321) and an outer support ring (322) with a coaxial axis. The inner support ring (321) and the outer support ring (322) are connected by a connecting rod. The outer support ring (322) is fixedly installed on the inner ring wall of the tower body mechanism (1). The stirring rod (33) is rotatably installed between the inner support ring (321) and the outer support ring (322). The end of the stirring rod (33) near the central axis of the inner support ring (321) is connected to the shaft (24) through a fixedly installed bevel gear set (331). The packing disc (31) is coaxially fixedly connected to the shaft (24).

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