Acetic acid tail gas absorption device

Abstract

The utility model relates to the technical field of tail gas absorption, and discloses an acetic acid tail gas absorption device which comprises a bottom plate, a purification assembly is arranged at the top of the bottom plate and comprises a first purification tank, a first connecting pipeline is fixedly connected to one side wall of the purification tank, and a plurality of purifiers are arranged at the top of the inner wall of the first purification tank. The outer wall of the purifier is fixedly connected to the inner wall of the first purification tank, the top of the first purification tank is fixedly connected with a first air inducing pipeline, and the inner wall of the first air inducing pipeline is communicated with the inner wall of the first purification tank. According to the acetic acid tail gas treatment device, acetic acid tail gas is introduced into the purification tank I through the induced draft fan I, is mixed with a neutralization solution, enters the purifier, is neutralized by the filler, discharges gas containing a small amount of acetic acid into the protective shell, is introduced into the purification tank II through the induced draft fan II, is neutralized and demisted by the purifier again, and is discharged, so that the problems that the traditional tail gas treatment efficiency is low and the purification is not thorough are solved; the tail gas purification efficiency and quality are improved, and the environmental pollution is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to tail gas absorption technical field especially relates to a kind of acetic acid tail gas absorption device. BACKGROUND

[0002] With the increasingly stringent environmental requirements and the importance of air quality and ecological environment is constantly improved, research and development of efficient, reliable acetic acid tail gas absorption device has become the urgent demand in the industry. Acetic acid tail gas contains a large amount of acetic acid component, if not properly handled directly discharged into the atmosphere, not only will cause serious pollution to the surrounding air environment, affect air quality and visibility, but also will have many hazards to human health, such as stimulating respiratory mucosa, causing cough, asthma and other respiratory diseases, long-term exposure to contaminated environment may even lead to more serious health problems. Therefore, developing a device capable of effectively purifying acetic acid tail gas has important practical significance and social value, the utility model aims at providing an innovative acetic acid tail gas absorption solution for this demand.

[0003] Traditional acetic acid tail gas treatment device usually adopts relatively simple absorption tower structure. In this structure, the tail gas is introduced into the absorption tower by the fan and is promoted to flow in the tower to increase the contact opportunity of the tail gas and the absorption liquid, the tail gas enters from the bottom of the absorption tower, and the absorption liquid is contacted with the absorption liquid sprayed from the top of the tower through the filler layer filled in the tower. The absorption liquid is generally alkaline solution, and the principle is to remove the acetic acid component in the tail gas by using acid-base neutralization reaction. The tail gas is mass transfered with the absorption liquid on the surface of the filler during the rising process, and the acetic acid molecules are gradually dissolved in the absorption liquid, so as to realize the purification effect.

[0004] However, the traditional acetic acid tail gas treatment device has the problems of low tail gas purification efficiency and incomplete purification in actual application. Due to its simple structure design and limited technical means, when facing a large amount of acetic acid tail gas, it cannot guarantee that the acetic acid component in the tail gas can be fully absorbed and converted. This not only leads to the tail gas discharged into the atmosphere still containing high concentration of acetic acid, causing continuous pollution pressure to the environment, but also cannot meet the increasingly stringent environmental emission standards, in addition, the incomplete purification of tail gas may also cause corrosion to the equipment and pipeline inside the enterprise, shorten the service life of the equipment, increase the operating cost of the enterprise, therefore, an acetic acid tail gas absorption device is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides an acetic acid tail gas absorption device, which aims at improving the problems of low tail gas treatment efficiency and incomplete purification in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The application discloses an acetic acid tail gas absorption device, which comprises a bottom plate, a purification assembly arranged on the top of the bottom plate and used for purifying tail gas containing acetic acid, and an air inlet assembly arranged on the top of the bottom plate and used for attracting the tail gas into the purification assembly, wherein the air inlet assembly is arranged on one side of the purification assembly.

[0008] The purification assembly comprises a purification tank one, a connecting pipeline one fixedly connected to the side wall of the purification tank one, an inner wall of the connecting pipeline one communicated with an inner wall of the purification tank one, a plurality of purifiers arranged on the top of the inner wall of the purification tank one, the purifiers arranged in an up-down separation mode, the purifiers fixedly connected to the inner wall of the purification tank one, an air induction pipeline one fixedly connected to the top of the purification tank one, an inner wall of the air induction pipeline one communicated with the inner wall of the purification tank one, and a circulating assembly arranged on the side wall of the purification tank one and used for circulating neutralizing liquid in the inner wall of the purification tank one.

[0009] Further description is made to the above technical scheme.

[0010] The air inlet assembly comprises an air induction fan one, a support frame fixedly connected to the outer wall of the air induction fan one, the support frame fixedly connected to the top of the bottom plate, an air inlet pipe fixedly connected to one side of the air induction fan one, and the air induction fan one fixedly connected to the side wall of the connecting pipeline one.

[0011] Further description is made to the above technical scheme.

[0012] The circulating assembly comprises a liquid storage tank, the liquid storage tank fixedly connected to the top of the bottom plate, a circulating water pump fixedly connected to the top of the liquid storage tank, a water outlet pipe fixedly connected to the output end of the circulating water pump, the water outlet pipe fixedly connected to the side wall of the purification tank one, the inner wall of the water outlet pipe communicated with the inner wall of the purification tank one, a water inlet pipe fixedly connected to the side wall of the liquid storage tank, the water inlet pipe fixedly connected to the side wall of the purification tank one, and the inner wall of the water inlet pipe communicated with the inside of the purification tank one.

[0013] Further description is made to the above technical scheme.

[0014] The air induction pipeline one is fixedly connected with a protection shell, the protection shell is fixedly connected with an air induction pipeline two, the air induction pipeline two is fixedly connected with an air induction fan two at the bottom side wall, the outer wall of the air induction fan two is fixedly connected to the inner wall of another support frame, and the bottom of the support frame is fixedly connected to the top of the bottom plate.

[0015] Further description is made to the above technical scheme.

[0016] The second side wall of the air inducing fan is fixedly connected with a connecting pipeline II, the side wall of the connecting pipeline II is fixedly connected with a second purification tank, the inner wall of the connecting pipeline II is communicated with the inside of the second purification tank, and the bottom of the second purification tank is fixedly connected to the top of the bottom plate.

[0017] As a further description of the above technical solution:

[0018] The inner wall of the second purification tank is consistent with the inner wall of the first purification tank, and a plurality of purifiers are also arranged on the inner wall of the second purification tank, the purifiers are arranged in an up-down separation mode, the outer wall of the purifier is fixedly connected to the inner wall of the second purification tank, the top of the second purification tank is fixedly connected with an air outlet pipe, and the inside of the second purification tank is communicated with the inner wall of the air outlet pipe.

[0019] As a further description of the above technical solution:

[0020] The inner wall of the protection shell is provided with a tapered groove, one end of the tapered groove is tapered, the inner wall of the tapered groove is slidably connected with a tapered block, and the outer wall of the tapered block is fixedly connected with a sealing ring.

[0021] As a further description of the above technical solution:

[0022] A reset spring is arranged between the tapered block and the inner wall of the tapered groove, one end of the reset spring is fixedly connected to the side wall of the tapered block, and the other end of the reset spring is fixedly connected to the inner wall of the tapered groove.

[0023] The utility model has the following beneficial effects:

[0024] 1、 in the utility model, the acetic acid tail gas is introduced into the first purification tank through the air inducing fan, is mixed with the neutralizing liquid, enters the purifier, is neutralized through the filler, the gas containing a small amount of acetic acid is discharged into the protection shell, is introduced into the second purification tank through the air inducing fan again, is neutralized and is discharged after defogging again through the purifier, the problems of low traditional tail gas treatment efficiency and incomplete purification are solved, the efficiency and quality of tail gas purification are improved, and the environmental pollution is reduced.

[0025] 2、 in the utility model, when the preliminary purification gas passes through the protection shell, the tapered block is pushed to move inwards, drives the sealing ring to displace synchronously, makes the reset spring compress, and the gap between the tapered groove and the tapered block allows the gas to flow. After purification stops, the reset spring pushes back, the tapered block and the sealing ring are clamped into the narrow place of the tapered groove, and the backflow of the gas is effectively prevented. The problem that the purified gas is polluted again due to the backflow of the gas is solved, the reliability of the tail gas purification system is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A three-dimensional schematic view of an acetic acid tail gas absorption device is provided.

[0027] Figure 2A structure schematic view of a purification tank one of the acetic acid tail gas absorption device is provided in the utility model.

[0028] Figure 3 A structure schematic view of a liquid storage tank of the acetic acid tail gas absorption device is provided in the utility model.

[0029] Figure 4 A structure schematic view of a purification tank one of the acetic acid tail gas absorption device is provided in the utility model.

[0030] Figure 5 For Figure 4 The enlarged view of A in the middle.

[0031] Legend:

[0032] 1, bottom plate; 2, purification tank one; 3, purification tank two; 4, air inlet pipe; 5, induced draft fan one; 6, connecting pipeline one; 7, support frame; 8, induced draft fan two; 9, connecting pipeline two; 10, air induction pipeline one; 11, protective shell; 12, air induction pipeline two; 13, air outlet pipe; 14, liquid storage tank; 15, circulating water pump; 16, water outlet pipe; 17, water inlet pipe; 18, purifier; 19, conical groove; 20, conical block; 21, sealing ring; 22, return spring. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] With reference to Figures 1-3 The utility model provides an embodiment: a kind of acetic acid tail gas absorption device, including bottom plate 1, and the main function of bottom plate 1 is to provide stable support foundation for the whole device, and bottom plate 1 top is provided with purification assembly, and purification assembly is used to purify the tail gas containing acetic acid, and its key role is in that a series of physical and chemical processes, acetic acid component in tail gas is effectively removed, so that it reaches discharge standard, and bottom plate 1 top is provided with air inlet component, and air inlet component is used to attract tail gas to enter purification assembly, and air inlet component is located in one side of purification assembly.

[0035] The purification assembly comprises a purification tank 2 made of acid and alkali resistant engineering plastic, which can resist corrosion of acetic acid and neutralizing liquid, ensuring long-term stable operation of the device. The side wall of the purification tank 2 is fixedly connected with a connecting pipeline 6, which is mainly used to smoothly introduce the tail gas from the induced draft fan 5 into the inside of the purification tank 2, ensuring no leakage during gas transmission. The inner wall of the connecting pipeline 6 communicates with the inner wall of the purification tank 2. A plurality of purifiers 18 are arranged on the inner wall of the purification tank 2. The purifiers 18 are arranged in an up-down separation manner, and the outer shell is made of stainless steel and filled with high-efficiency alkaline adsorption filler, such as a mixture of modified activated carbon and alkaline substances, which can react with acetic acid to enhance the tail gas purification effect. The outer wall of the purifier 18 is fixedly connected to the inner wall of the purification tank 2. The top of the purification tank 2 is fixedly connected with an induced draft pipeline 10 which is also made of corrosion-resistant plastic. Its function is to guide the gas that has been preliminarily purified out of the protective shell 11, ensuring the smoothness and sealing of the gas transmission. The inner wall of the induced draft pipeline 10 communicates with the inner wall of the purification tank 2. The side wall of the purification tank 2 is provided with a circulating assembly for circulating the neutralizing liquid in the inner wall of the purification tank 2. The circulating assembly is located on the opposite side of the air inlet assembly. The air inlet assembly comprises an induced draft fan 5, which mainly generates negative pressure to attract acetic acid-containing tail gas into the device, ensuring that the tail gas has enough power to enter the subsequent purification process. The outer wall of the induced draft fan 5 is fixedly connected with a support frame 7, which provides stable support for the induced draft fan 5 to prevent it from shaking or shifting during operation. The bottom of the support frame 7 is fixedly connected to the top of the bottom plate 1. One side of the induced draft fan 5 is fixedly connected with an air inlet pipe 4, and the other side is fixedly connected to the side wall of the connecting pipeline 6. The circulating assembly comprises a liquid storage tank 14 for storing neutralizing liquid to ensure continuous supply and recycling of the neutralizing liquid. The bottom of the liquid storage tank 14 is fixedly connected to the top of the bottom plate 1. The top of the liquid storage tank 14 is fixedly connected with a circulating water pump 15. The circulating water pump 15 operates to draw the neutralizing liquid in the liquid storage tank 14 and deliver it to the inside of the purification tank 2 through the water outlet pipe 16, maintaining the circulation of the neutralizing liquid and ensuring the concentration and activity of the neutralizing liquid during the tail gas purification process. The output end of the circulating water pump 15 is fixedly connected with the water outlet pipe 16. The side wall of the water outlet pipe 16 is fixedly connected to the side wall of the purification tank 2. The inner wall of the water outlet pipe 16 communicates with the inner wall of the purification tank 2. The side wall of the liquid storage tank 14 is fixedly connected with a water inlet pipe 17 for returning the reacted neutralizing liquid in the purification tank 2 to the liquid storage tank 14 for re-dispensing and replenishment, ensuring the recycling and stability of the composition of the neutralizing liquid. The side wall of the water inlet pipe 17 is fixedly connected to the side wall of the purification tank 2. The inner wall of the water inlet pipe 17 communicates with the inside of the purification tank 2. The side wall of the induced draft pipeline 10 is fixedly connected with a protective shell 11, which mainly protects the internal gas transmission components and prevents external factors from interfering with the gas flow, while providing a stable gas transition space for subsequent induced draft operation. The side wall of the protective shell 11 is fixedly connected with an induced draft pipeline 12. The bottom side wall of the induced draft pipeline 12 is fixedly connected with an induced draft fan 8.The function of the induced draft fan two 8 is to further introduce the gas in the protective shell 11 into the purification tank two 3 for deep purification. The outer wall of the induced draft fan two 8 is fixedly connected to the inner wall of another support frame 7. The bottom of the support frame 7 is fixedly connected to the top of the bottom plate 1. The side wall of the induced draft fan two 8 is fixedly connected with a connecting pipeline two 9. The side wall of the connecting pipeline two 9 is fixedly connected with the purification tank two 3. The inner wall of the connecting pipeline two 9 is communicated with the inside of the purification tank two 3. The bottom of the purification tank two 3 is fixedly connected to the top of the bottom plate 1. The inner wall of the purification tank two 3 is consistent with the inner wall of the purification tank one 2. A plurality of purifiers 18 are arranged in the purification tank two 3. The purifiers 18 are arranged in an up-down separation manner. The outer wall of the purifier 18 is fixedly connected to the inner wall of the purification tank two 3. The gas is subjected to secondary neutralization and demisting by the filler in the purifier 18, so as to further improve the purification degree of the tail gas. The top of the purification tank two 3 is fixedly connected with the air outlet pipe 13. The inside of the purification tank two 3 is communicated with the inner wall of the air outlet pipe 13. The air outlet pipe 13 is responsible for safely and stably discharging the purified gas to the outside environment, so as to ensure that the discharged gas meets the environmental protection standard.

[0036] Specifically, when the acetic acid tail gas absorption device is used, first, the gas containing acetic acid flows horizontally from the outside environment to the inside of the induced draft fan one 5 under the action of the negative pressure suction force generated by the induced draft fan one 5. The impeller in the induced draft fan one 5 rotates at high speed, accelerates the gas and changes the flow direction of the gas, so that the gas flows vertically downward along the connecting pipeline one 6 to the inside of the purification tank one 2. After being discharged into the inside of the purification tank one 2, the gas is fully mixed with the neutralizing liquid in the inside of the purification tank one 2. At this time, the acetic acid in the gas reacts with the neutralizing liquid to generate acid-base neutralization reaction. The gas carries part of the neutralizing liquid to move upward, and then enters the purifier 18. The gas horizontally and vertically shuttles in the tortuous channel in the purifier 18, and further fully contacts with the filler in the inside of the purifier 18 to generate neutralization reaction. After the above series of processes, the gas containing a large amount of water and a small amount of acetic acid is vertically upwardly discharged from the induced draft pipeline one 10 at the top of the purification tank one 2 into the protective shell 11. Under the action of the suction force generated by the induced draft fan two 8, the gas flows horizontally to the inside of the purification tank two 3 along the connecting pipeline two 9. The gas passes through the purifier 18 in the inside of the induced draft fan two 8 again. The gas repeats the flow path in the purifier 18, and further deeply neutralizes the filler and performs demisting process. Finally, the purified gas is vertically upwardly discharged out of the device through the air outlet pipe 13 at the top of the purification tank two 3. In the use process, the circulating water pump 15 at the top of the liquid storage tank 14 is started. The impeller in the circulating water pump 15 rotates clockwise. The neutralizing liquid in the inside of the liquid storage tank 14 is horizontally delivered to the inside of the purification tank two 3 through the water outlet pipe 16. At the same time, the neutralizing liquid in the inside of the purification tank one 2 vertically flows into the inside of the liquid storage tank 14 through the water inlet pipe 17 under the action of gravity, so as to form a circulating loop of the neutralizing liquid. In this way, the effect of efficiently purifying acetic acid tail gas is achieved. Through the coordinated operation of each component and the orderly flow of gas and liquid, it is ensured that the tail gas is fully purified in the device, and the tail gas purification efficiency and stability of the whole device are improved.

[0037] Referring to Figure 4 and Figure 5 The inner wall of the protective shell 11 is provided with a tapered groove 19, one end of which is tapered. The inner wall of the tapered groove 19 is finely polished. The tapered structure of one end of the tapered groove 19 helps to closely cooperate with the internal tapered block 20, effectively controls the flow of gas, ensures smooth sliding connection and good sealing between the tapered block 20, reduces the possibility of gas leakage, and the tapered block 20 is slidably connected to the inner wall of the tapered groove 19. The tapered block 20 is made of rubber material, which can ensure flexibility when sliding with the inner wall of the tapered groove 19, and can form an effective seal when in close contact with the inner wall, preventing gas backflow. Its tapered shape is adapted to the tapered groove 19, and when subjected to external force, it can stably slide in the groove, thereby changing the gap between the tapered groove 19 and achieving control of gas flow. The outer wall of the tapered block 20 is fixedly connected with a sealing ring 21 made of rubber material, which closely fits the outer wall of the tapered block 20, further enhancing the sealing effect between the tapered block 20 and the tapered groove 19. When the tapered block 20 is in different positions, the sealing ring 21 can effectively fill the possible small gaps and prevent gas leakage. A return spring 22 is provided between the tapered block 20 and the inner wall of the tapered groove 19, one end of which is fixedly connected to the side wall of the tapered block 20, and the other end is fixedly connected to the inner wall of the tapered groove 19. Its main function is to provide restoring force for the tapered block 20 after the gas pressure disappears, so that it can quickly return to the initial position and achieve sealing and blocking of the gas again, ensuring the safety and stability of the device when it stops running or the pressure fluctuates.

[0038] Specifically, when the initially purified gas passes through the protective shell 11, the gas enters horizontally from the gas inlet side of the protective shell 11. Due to the pressure and flow rate of the gas, the gas first generates a horizontal pushing force on the conical block 20 located in the conical groove 19, causing the conical block 20 to displace inward along the inner wall of the conical groove 19, i.e., toward the narrow end of the conical groove 19. In this process, the displacement of the conical block 20 is achieved by the sliding friction between the conical block 20 and the inner wall of the conical groove 19. Due to the smooth treatment of the inner wall and the appropriate material selection of the conical block 20, the sliding can be smoothly performed. The displacement of the conical block 20 drives the sealing ring 21 fixed to the outer wall of the conical block 20 to also displace horizontally. The sealing ring 21 maintains close contact with the inner wall of the conical groove 19 during the movement, effectively preventing gas leakage from the gap between the conical block 20 and the conical groove 19, despite the change in position. At the same time, the inward movement of the conical block 20 also causes the return spring 22 to be compressed under stress. The return spring 22 gradually shortens its length during this process, and the elastic potential energy inside the spring gradually increases. The compression direction of the spring is consistent with the displacement direction of the conical block 20, which is also horizontal. Under the continuous pushing of the gas, when the conical block 20 moves to a certain position, a sufficient gap is generated between the conical groove 19 and the conical block 20, and the gas can pass horizontally through this gap to continue the subsequent processing flow. When the purification operation stops and the gas pressure disappears, the return spring 22, which was compressed, begins to stretch due to its own elastic restoring force. The spring pushes the conical block 20 in the horizontal direction, causing the conical block 20 to move outward along the inner wall of the conical groove 19, i.e., toward the larger opening end of the conical groove 19. In this process, the conical block 20 gradually returns to the initial position, and the sealing ring 21 is again clamped into the narrow part of the conical groove 19. The sealing ring 21 again closely adheres to the inner wall of the conical groove 19 during the resetting process, filling the gap generated by the movement of the conical block 20, thereby achieving the effect of preventing gas backflow, ensuring the stability and reliability of the entire tail gas absorption device, avoiding the mixing of purified gas into untreated tail gas again, and thus ensuring the quality and efficiency of tail gas purification.

[0039] Working principle: when using the acetic acid tail gas absorption device, first, the gas containing acetic acid is sucked into the connecting pipeline one 6 by the suction of the induced draft fan one 5, and then is mixed with the neutralizing liquid in the purification tank one 2, and then is further neutralized by the filler in the purifier 18, and then the gas containing a large amount of water and a small amount of acetic acid is discharged into the protective shell 11 through the induced draft pipeline one 10 at the top of the purification tank one 2, and then is sucked by the induced draft fan two 8, and then is discharged into the purification tank two 3 through the connecting pipeline two 9, and then is neutralized and demisted by the purifier 18 in the induced draft fan two 8, and finally the purified gas is discharged out of the equipment through the air outlet pipe 13, and in the use process, the circulating water pump 15 at the top of the liquid storage tank 14 will discharge the neutralizing liquid in the liquid storage tank 14 into the purification tank two 3, and at the same time, the water inlet pipe 17 at the bottom of the liquid storage tank 14 will also suck the neutralizing liquid in the purification tank one 2 into the liquid storage tank 14, forming the circulation of the neutralizing liquid, so as to achieve the effect of high-efficiency purification of acetic acid tail gas, when the gas passes through the protective shell 11, the gas will first push the conical block 20 to displace inward, the displacement of the conical block 20 drives the sealing ring 21 to displace synchronously, and at the same time, the displacement also makes the return spring 22 be compressed under force, so that the gap between the conical groove 19 and the conical block 20 is generated, and the gas can flow, when the purification operation is stopped, the return spring 22 restores and pushes the conical block 20 and the sealing ring 21 to be clamped into the narrow place of the conical groove 19 again, so as to achieve the effect of preventing the backflow of the gas.

[0040] Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An acetic acid tail gas absorption apparatus comprising a base plate (1), characterized in that: The bottom plate (1) top is provided with a purification assembly, the purification assembly is used for purifying the tail gas containing acetic acid, the bottom plate (1) top is provided with air inlet assembly, the air inlet assembly is used for attracting tail gas into the purification assembly, the air inlet assembly is located in the purification assembly one side; The purification assembly includes a purification tank one (2), the side wall of the purification tank one (2) is fixedly connected with a connecting pipeline one (6), the inner wall of the connecting pipeline one (6) is communicated with the inner wall of the purification tank one (2), a plurality of purifiers (18) are arranged on the top of the inner wall of the purification tank one (2), the purifiers (18) are arranged in an up-down separation manner, the outer wall of the purifier (18) is fixedly connected to the inner wall of the purification tank one (2), an air duct one (10) is fixedly connected to the top of the purification tank one (2), the inner wall of the air duct one (10) is communicated with the inner wall of the purification tank one (2), a circulating assembly is arranged on the side wall of the purification tank one (2), the circulating assembly is used for circulating the neutralizing liquid on the inner wall of the purification tank one (2), and the circulating assembly is located on the opposite side of the air inlet assembly.

2. The acetic acid tail gas absorption unit of claim 1, wherein: The air inlet assembly includes an air inlet fan one (5), the outer wall of the air inlet fan one (5) is fixedly connected with a support frame (7), the bottom of the support frame (7) is fixedly connected to the top of the bottom plate (1), an air inlet pipe (4) is fixedly connected to one side of the air inlet fan one (5), and the other side of the air inlet fan one (5) is fixedly connected to the side wall of the connecting pipeline one (6).

3. The acetic acid tail gas absorption unit of claim 1, wherein: The circulating assembly includes a liquid storage tank (14), the bottom of the liquid storage tank (14) is fixedly connected to the top of the bottom plate (1), a circulating water pump (15) is fixedly connected to the top of the liquid storage tank (14), an outlet pipe (16) is fixedly connected to the output end of the circulating water pump (15), the side wall of the outlet pipe (16) is fixedly connected to the side wall of the purification tank one (2), the inner wall of the outlet pipe (16) is communicated with the inner wall of the purification tank one (2), an inlet pipe (17) is fixedly connected to the side wall of the liquid storage tank (14), the side wall of the inlet pipe (17) is fixedly connected to the side wall of the purification tank one (2), and the inner wall of the inlet pipe (17) is communicated with the inside of the purification tank one (2).

4. The acetic acid tail gas absorption unit of claim 1, wherein: The side wall of the air duct one (10) is fixedly connected with a protective shell (11), the side wall of the protective shell (11) is fixedly connected with an air duct two (12), the bottom side wall of the air duct two (12) is fixedly connected with an air inlet fan two (8), the outer wall of the air inlet fan two (8) is fixedly connected to the inner wall of another support frame (7), and the bottom of the support frame (7) is fixedly connected to the top of the bottom plate (1).

5. The acetic acid tail gas absorption unit of claim 4, wherein: The side wall of the air inlet fan two (8) is fixedly connected with a connecting pipeline two (9), the side wall of the connecting pipeline two (9) is fixedly connected with a purification tank two (3), the inner wall of the connecting pipeline two (9) is communicated with the inside of the purification tank two (3), and the bottom of the purification tank two (3) is fixedly connected to the top of the bottom plate (1).

6. The acetic acid tail gas absorption unit of claim 5, wherein: The inner wall of the purification tank two (3) is consistent with the inner wall of the purification tank one (2), and is also provided with a plurality of purifiers (18) distributed in an up-down separation shape. The outer wall of the purifier (18) is fixedly connected to the inner wall of the purification tank two (3). The top of the purification tank two (3) is fixedly connected with an air outlet pipe (13). The inside of the purification tank two (3) is communicated with the inner wall of the air outlet pipe (13).

7. The acetic acid tail gas absorption unit of claim 4, wherein: The inner wall of the protection shell (11) is provided with a tapered groove (19). One end of the tapered groove (19) is tapered. The inner wall of the tapered groove (19) is slidably connected with a tapered block (20). The outer wall of the tapered block (20) is fixedly connected with a sealing ring (21).

8. The acetic acid tail gas absorption unit of claim 7, wherein: The inner wall of the tapered block (20) and the tapered groove (19) is provided with a reset spring (22). One end of the reset spring (22) is fixedly connected to the side wall of the tapered block (20). The other end of the reset spring (22) is fixedly connected to the inner wall of the tapered groove (19).

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