A kind of acid tail gas high-efficiency neutralization alkali washing tower and neutralization method thereof

Abstract

The present invention discloses an acid tail gas high-efficiency neutralization alkali washing tower and a neutralization method thereof. A water-dividing tray, a jet tray and an atomizing nozzle are arranged in the alkali washing tower. The atomizing nozzle is installed at the top of the inner cavity of the alkali washing tower. The atomizing nozzle sprays alkali solution to form a spray channel in the alkali washing tower. The water-dividing tray and the jet tray are arranged in sequence in the spray channel along the falling direction of the alkali solution sprayed by the atomizing nozzle. The water-dividing tray is sealed and fixed to the inner wall of the alkali washing tower. A drip hole is provided on the water-dividing tray. The drip hole is used to drip the alkali solution. The jet tray is installed under the water-dividing tray. A gap is left between the peripheral wall of the jet tray and the inner wall of the alkali washing tower as a gas passage. The jet tray is provided with an air nozzle. The jet tray extracts the acid tail gas entering the alkali washing tower and sprays it through the air nozzle. The gas outlet direction of the air nozzle matches the drip hole. Through such a design, the neutralization reaction time and number of the acid tail gas in the alkali washing tower are increased.

Description

Technical Field

[0001] The invention belongs to the field of chemical waste purification equipment, and in particular relates to an acid tail gas high-efficiency neutralization alkali washing tower and a neutralization method thereof. Background Art

[0002] Some petrochemical companies are engaged in the storage and transportation of volatile acidic chemical raw materials (such as acetic acid). Such volatile acidic chemical raw materials volatilize during the loading and unloading process of materials, and the tail gas generated by volatilization will cause air pollution near the work area, which will not only seriously endanger the health of workers, but also corrode plant facilities, reduce the service life of facilities and cause safety accidents. Therefore, the tail gas generated by volatile acidic chemical raw materials needs to be neutralized before it can be discharged.

[0003] The industry often uses alkali washing towers as equipment for neutralizing acidic tail gas. The principle is summarized as follows: the acidic tail gas is passed into an alkali washing tower containing alkali solution. There is a nozzle on the top of the alkali washing tower. The acidic tail gas reacts with the alkaline alkali solution in the alkali washing tower to purify the acidic tail gas. However, since the neutralization reaction between the acidic tail gas and the alkali solution is limited to the part of the acidic gas that can contact the alkali solution sprayed from the nozzle during the rising process, when the amount of acidic tail gas is large, part of the tail gas cannot meet the direct discharge standard after the neutralization reaction. This part of the acidic tail gas needs to be collected through a waste collection tank, which wastes manpower and material resources. Therefore, it is necessary to provide an acidic tail gas high-efficiency neutralization alkali washing tower and a neutralization method thereof that can prolong the neutralization reaction time of the acidic tail gas and improve the efficiency of the neutralization reaction. Summary of the invention

[0004] The purpose of the present invention is to provide an acidic tail gas high-efficiency neutralization alkali washing tower and a neutralization method thereof, so as to solve the technical problem that the neutralization reaction between the acidic tail gas and the alkali solution is limited to the part of the acidic gas that can contact with the alkali solution sprayed from the nozzle during the rising process. This leads to that when the amount of acidic tail gas is large, part of the tail gas cannot meet the direct discharge standard after the neutralization reaction, and this part of the acidic tail gas needs to be collected through a waste collection tank, wasting manpower and material resources.

[0005] To achieve the above purpose, the specific technical solutions of the present invention are as follows:

[0006] The invention discloses an acid tail gas high-efficiency neutralization alkali washing tower, which is used for neutralizing the tail gas generated by volatile acidic chemical raw materials. A water separation disk, a jet disk and an atomizing nozzle are arranged in the alkali washing tower. The atomizing nozzle is installed at the top of the inner cavity of the alkali washing tower. The atomizing nozzle sprays alkali solution to form a spray channel in the alkali washing tower. The water separation disk and the jet disk are sequentially arranged in the spray channel along the falling direction of the alkali solution sprayed by the atomizing nozzle. The water separation disk is sealed and fixed to the inner wall of the alkali washing tower. A drip hole is provided on the water separation disk, and the drip hole is used for dripping alkali solution. The jet disk is installed under the water separation disk. A gap is left between the peripheral wall of the jet disk and the inner wall of the alkali washing tower as a gas passage. A gas nozzle is provided on the jet disk. The jet disk extracts the acid tail gas entering the alkali washing tower and sprays it through the gas nozzle. The gas outlet direction of the gas nozzle matches the drip hole. Through such a design, the neutralization reaction time of the acidic tail gas in the alkali washing tower is prolonged, and the number of neutralization reactions of the acidic tail gas in the alkali washing tower is increased.

[0007] The water separation tray and the air jet tray are provided in two or more groups in the alkali washing tower, the distance between the top of the air nozzle and the bottom of the drip hole in the height direction is 1 cm to 3 cm, and one air nozzle on the air jet tray corresponds to one drip hole on the water separation tray. Through such a design, the air nozzle and the drip hole are kept in the most reasonable matching position, the airflow sprayed by the air nozzle is blown into the drip hole to the maximum extent, and the acidic tail gas is fully neutralized with the alkali solution at the rapid neutralization position.

[0008] The aperture of the drip hole changes from large to small in the falling direction of the alkali solution sprayed from the atomizing nozzle, forming a funnel shape. The drip hole collects and drips the alkali solution toward the gas outlet direction of the gas nozzle, and the alkali solution dripping from the drip hole cooperates with the acidic tail gas sprayed from the gas nozzle to form a rapid neutralization position. Through such a design, there is an additional neutralization method for the acidic tail gas and the alkali solution, which is not limited to neutralizing the acidic tail gas with the alkali solution sprayed from the atomizing nozzle in the spray channel, so as to prevent the acid gas from being insufficiently neutralized and needing to be collected and processed later.

[0009] The interior of the jet disc is hollow to form a gas separation cavity, which is connected to the inner cavity of the alkali washing tower through a connecting pipe. The connecting pipe is equipped with an electromagnetic valve pump, which intermittently extracts the acid tail gas in the inner cavity of the alkali washing tower and transports it into the gas separation cavity. The surrounding wall of the jet disc is provided with a mounting column, which is used to fix the jet disc and the alkali washing tower and leave a gas passage for the acid gas. Through such a design, the electromagnetic valve pump intermittently controls the air nozzle to spray out the acid tail gas. When the air nozzle is venting, the acid tail gas can flow from the bottom of the water separation disc to the top of the water separation disc. When the air nozzle stops venting, the alkali liquid on the water separation disc can leak from the drip hole and enter the space below the water separation disc.

[0010] The gas nozzle includes an air inlet chamber, an air outlet chamber and an air outlet. The air inlet chamber and the air outlet chamber are arranged along the outflow direction of the acid tail gas. The air outlet is arranged on the air outlet chamber for the acid gas to be ejected. The air outlet is also provided with a valve. The valve opens when the air pressure is higher than a threshold value and closes when the air pressure is lower than the threshold value. With such a design, the valve opens only when the electromagnetic valve pump supplies air to the jet disc and the air pressure at the valve is higher than the threshold value for the valve to open, thereby preventing the alkali solution from entering the air chamber of the jet disc from the air outlet.

[0011] The alkali washing tower is connected and installed on the alkali barrel below, the alkali barrel is used to load alkali solution, the top of the alkali barrel is provided with a liquid inlet, the liquid inlet is used to pour the alkali solution into the alkali barrel, and the bottom of the side wall of the alkali barrel is provided with a liquid discharge port, the liquid discharge port is used to discharge the alkali solution with reduced alkalinity after the neutralization reaction. By such a design, the alkali solution in the alkali barrel can be replaced, the liquid inlet at the top can ensure the full utilization of the alkali barrel space, and the liquid discharge port is arranged at the bottom to ensure that the alkali solution in the alkali barrel is emptied.

[0012] The top of the alkali barrel is also provided with an air inlet pipe, which discharges the acidic tail gas into the alkali barrel, and the end of the air inlet pipe that discharges the acidic tail gas is immersed in the alkali solution in the alkali barrel. Through such a design, the acidic tail gas can undergo a neutralization reaction with the alkali solution just when it is discharged into the alkali barrel.

[0013] The atomizing nozzle is connected to the bottom of the alkali barrel through a liquid infusion pipe, and a liquid pump is arranged on the liquid infusion pipe, and the liquid pump supplies the alkali solution in the alkali barrel to the atomizing nozzle through the liquid infusion pipe. With such a design, the atomizing nozzle can neutralize the acid gas in the spray channel and supply alkali solution to the water distribution tray.

[0014] The top of the alkali washing tower is provided with a direct discharge port, which discharges the acidic gas after neutralization into the air. Through such a design, the acidic tail gas can meet the direct discharge requirements after multiple neutralization reactions in the alkali washing tower, and can be directly discharged into the air from the direct discharge port.

[0015] A method for efficiently neutralizing acidic tail gas comprises the following steps:

[0016] Step 1: The air intake pipe discharges the acidic tail gas into the alkali barrel, the exhaust part of the air intake pipe is located below the alkali liquid level in the alkali barrel, and the acidic tail gas and the alkali liquid undergo a neutralization reaction;

[0017] Step 2: The acidic tail gas is in the alkali barrel, and the solenoid valve pump extracts the acidic tail gas and sends it to the jet disk. The jet disk sprays the acidic tail gas through the air nozzle, and the acidic tail gas contacts the alkali solution leaking from the drip hole of the water distribution plate to cause a neutralization reaction;

[0018] Step 3: The acidic tail gas rises in the alkali barrel and immerses into the alkali washing tower, passes through the air passage and drip holes in the alkali washing tower to reach the bottom of the atomizing nozzle, and reacts with the alkali solution sprayed from the atomizing nozzle to neutralize;

[0019] Step 4: After a series of neutralization reactions, the acidic tail gas is directly discharged into the air from the direct discharge port.

[0020] Through such steps, the acidic tail gas can have three different neutralization reaction modes in the alkali washing tower, and at the same time, the neutralization distance of the same batch of acidic gas in the alkali washing tower is increased.

[0021] The beneficial effects of the present invention are: prolonging the neutralization reaction time of the acidic tail gas in the alkali washing tower, increasing the number of neutralization reactions of the acidic tail gas in the alkali washing tower, so that the acidic tail gas can be fully neutralized and stably reach the direct discharge standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention (the alkali washing tower part is the planed surface);

[0023] Figure 2 It is a schematic diagram of the overall structure of the outer surface of the present invention;

[0024] Figure 3 It is a schematic diagram of the internal structure of the alkali washing tower of the present invention (the outer surface of the alkali washing tower is hidden);

[0025] Figure 4 It is a schematic diagram of the coordination structure of the water separation plate and the air jet plate of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the water distribution plate of the present invention;

[0027] Figure 6 This is a plan view of the water diversion plate of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the jet disc of the present invention;

[0029] Figure 8 It is the planing surface diagram of the jet disc of the present invention;

[0030] Fig. 9 for Figure 8 A schematic diagram of the enlarged structure of part A;

[0031] Explanation of the markings in the figure: 1. Alkali washing tower; 2. Water distribution plate; 3. Jet plate; 4. Atomizing nozzle; 5. Spray channel; 6. Drip hole; 7. Air passage; 8. Air nozzle; 9. Quick neutralization position; 10. Air distribution cavity; 11. Solenoid valve pump; 12. Connecting pipe; 13. Mounting column; 14. Air inlet chamber; 15. Air outlet chamber; 16. Air outlet; 17. Valve; 18. Alkali barrel; 19. Liquid inlet; 20. Liquid outlet; 21. Air inlet pipe; 22. Infusion pipe; 23. Liquid pump; 24. Direct discharge port. DETAILED DESCRIPTION

[0032] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0033] like Figures 1 to 9 shown.

[0034] Example 1

[0035] An acid tail gas high-efficiency neutralization alkali washing tower is used to neutralize the tail gas generated by volatile acidic chemical raw materials. The alkali washing tower 1 is provided with a water separation plate 2, a jet plate 3 and an atomizing nozzle 4. The atomizing nozzle 4 is installed at the top of the inner cavity of the alkali washing tower 1. The atomizing nozzle 4 sprays alkali liquid to form a spray channel 5 in the alkali washing tower 1. The water separation plate 2 and the jet plate 3 are sequentially arranged in the spray channel 5 along the falling direction of the alkali liquid sprayed by the atomizing nozzle 4. The inner wall of the tower 1 is sealed and fixed, and a drip hole 6 is provided through the water dividing plate 2, and the drip hole 6 is used to drip alkali solution. The jet disc 3 is installed below the water dividing plate 2, and a gap is left between the peripheral wall of the jet disc 3 and the inner wall of the alkali washing tower 1 as an air passage 7. The jet disc 3 is provided with an air nozzle 8, and the jet disc 3 extracts the acidic tail gas entering the alkali washing tower 1 and sprays it out through the air nozzle 8, and the air outlet direction of the air nozzle 8 matches the drip hole 6.

[0036] The above embodiment is implemented as follows: the atomizing nozzle 4 sprays alkali liquid at the top of the alkali washing tower 1 to form a spray channel 5, and the alkali liquid falls onto the water dividing plate 2 with gravity. The dripping holes 6 on the water dividing plate 2 belong to the low-lying area, and the alkali liquid will gather at the dripping holes 6 and drip downward. At this time, the air nozzle 8 sprays the acidic gas toward the dripping holes 6, so that the acidic gas is fully in contact with the alkali liquid, and the alkali liquid at the dripping holes 6 will also splash around. The splashing of alkali liquid will also neutralize the flowing acidic gas. When the solenoid valve pump 11 suspends the gas supply, the alkali liquid falls and flows through the dripping holes 6 and enters the next low water tray, so that the alkali liquid and the acidic gas in the alkali washing tower 1 undergo different neutralization reactions at various positions.

[0037] Example 2

[0038] The water separation plate 2 and the air jet plate 3 are arranged in two or more groups in the alkali washing tower 1. The top of the air nozzle 8 is 1 cm to 3 cm away from the bottom of the drip hole 6 in the height direction. One air nozzle 8 on the air jet plate 3 corresponds to one drip hole 6 on the water separation plate 2.

[0039] The drip hole 6 has a funnel-shaped aperture that decreases in diameter along the falling direction of the alkali solution sprayed from the atomizing nozzle 4. The drip hole 6 collects and drips the alkali solution toward the gas outlet direction of the gas nozzle 8. The alkali solution dripping from the drip hole 6 cooperates with the acidic tail gas sprayed from the gas nozzle 8 to form a rapid neutralization point 9.

[0040] The implementation method of the above embodiment is: the air nozzle 8 and the drip hole 6 are kept in the most reasonable matching position, the airflow sprayed from the air nozzle 8 is blown into the drip hole 6 to the maximum extent, the acidic tail gas is fully neutralized with the alkali solution at the rapid neutralization position 9, and the funnel-shaped drip hole 6 better gathers the alkali solution.

[0041] Example 3

[0042] The interior of the jet disc 3 is hollow to form an air separation chamber 10, and the air separation chamber 10 is connected to the inner cavity of the alkali washing tower 1 through a connecting pipe 12. An electromagnetic valve pump 11 is installed on the connecting pipe 12. The electromagnetic valve pump 11 intermittently extracts the acidic tail gas in the inner cavity of the alkali washing tower 1 and transports it into the air separation chamber 10. The surrounding wall of the jet disc 3 is provided with a mounting column 13, and the mounting column 13 is used to fix the jet disc 3 and the alkali washing tower 1 and leave a gas passage 7 for the acidic gas.

[0043] The implementation method of the above embodiment is: the solenoid valve controls the intermittent jetting of the jet disc 3 to realize two functions of the water separation disc 2. One is that when the jet disc 3 jets, the water separation disc 2 cooperates with the air nozzle 8 to supply alkali liquid for the acidic gas sprayed by the air nozzle 8. The second is that when the jet disc 3 does not jet, space is provided for the alkali liquid to leak to the bottom of the water separation disc 2. The air passage 7 is to ensure that the space for the acidic gas to pass through from top to bottom is retained in the alkali washing tower 1.

[0044] Example 4

[0045] The gas nozzle 8 includes an air inlet chamber 14, an air outlet chamber 15 and an air outlet 16. The air inlet chamber 14 and the air outlet chamber 15 are arranged along the outflow direction of the acid tail gas. The air outlet 16 is arranged on the air outlet chamber 15 for the discharge of the acid gas. The air outlet 16 is also provided with a valve 17. The valve 17 opens when the air pressure is higher than a threshold value and closes when the air pressure is lower than the threshold value.

[0046] The implementation of the above embodiment is as follows:

[0047] When the solenoid valve pump 11 supplies air to the jet disk 3, the air pressure at the valve 17 is higher than the threshold value for opening the valve 17, and the valve 17 opens, allowing the air nozzle 8 to discharge air. When the solenoid valve pump 11 stops supplying air to the jet disk 3, the valve 17 closes and seals the air nozzle 8, preventing the alkaline solution from entering the air chamber 10 of the jet disk 3 from the air outlet 16.

[0048] The acidic tail gas in the gas distribution chamber 10 first enters the gas inlet chamber 14 of the gas nozzle 8, then enters the gas outlet chamber 15 from the gas inlet chamber 14, and is finally discharged from the gas outlet 16 of the gas outlet chamber 15. The volume from the gas inlet chamber 14 to the gas outlet chamber 15 becomes smaller and smaller, and the acidic gas can maintain a higher gas pressure when being discharged from the gas outlet 16.

[0049] Example 5

[0050] The alkali washing tower 1 is connected and installed on an alkali barrel 18 below. The alkali barrel 18 is used to load alkali solution. A liquid inlet 19 is provided on the top of the alkali barrel 18. The liquid inlet 19 is used to pour the alkali solution into the alkali barrel 18. A drain port 20 is provided at the bottom of the side wall of the alkali barrel 18. The drain port 20 is used to discharge the alkali solution with reduced alkalinity after the neutralization reaction.

[0051] An air inlet pipe 21 is also provided on the top of the alkali barrel 18 , and the air inlet pipe 21 discharges the acid tail gas into the alkali barrel 18 , and the end of the air inlet pipe 21 discharging the acid tail gas is immersed in the alkali solution in the alkali barrel 18 .

[0052] The atomizing nozzle 4 is connected to the bottom of the alkali barrel 18 through a liquid infusion tube 22 , and a liquid pump 23 is provided on the liquid infusion tube 22 . The liquid pump 23 supplies the alkali solution in the alkali barrel 18 to the atomizing nozzle 4 through the liquid infusion tube 22 .

[0053] The top of the alkali washing tower 1 is provided with a straight discharge port 24, and the straight discharge port 24 discharges the acid gas after the neutralization reaction into the air.

[0054] Example 6

[0055] A method for efficiently neutralizing acidic tail gas comprises the following steps:

[0056] Step 1: The air intake pipe 21 discharges the acidic tail gas into the alkali barrel 18, and the exhaust port of the air intake pipe 21 is located below the alkali liquid level in the alkali barrel 18, and the acidic tail gas reacts with the alkali liquid to neutralize;

[0057] Step 2: The acidic tail gas is in the alkali barrel 18, and the solenoid valve pump 11 extracts the acidic tail gas and sends it to the jet disk 3. The jet disk 3 sprays the acidic tail gas through the air nozzle 8. The acidic tail gas contacts the alkali solution leaking from the drip hole 6 of the water separation disk 2 to cause a neutralization reaction;

[0058] Step 3: The acidic tail gas rises in the alkali barrel 18 and immerses into the alkali washing tower 1, passes through the air passage 7 and the dripping hole 6 in the alkali washing tower 1 to reach the bottom of the atomizing nozzle 4, and reacts with the alkali solution sprayed from the atomizing nozzle 4 to neutralize;

[0059] Step 4: After a series of neutralization reactions, the acidic tail gas is directly discharged into the air through the direct discharge port 24.

[0060] The implementation of the above method enables the acid tail gas to have three different neutralization reaction modes in the alkali washing tower 1 , and also increases the neutralization distance of the same batch of acid gas in the alkali washing tower 1 .

[0061] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A highly efficient acidic tail gas neutralization method for neutralizing tail gas generated by volatile acidic chemical raw materials, characterized in that: The invention comprises an acid tail gas high-efficiency neutralization alkali washing tower, wherein the acid tail gas high-efficiency neutralization alkali washing tower comprises: A water separation tray (2), an air jet tray (3) and an atomizing nozzle (4) are provided in the alkali washing tower (1). The atomizing nozzle (4) is installed at the top of the inner cavity of the alkali washing tower (1). The atomizing nozzle (4) sprays alkali liquid to form a spray channel (5) in the alkali washing tower (1). The water separation tray (2) and the air jet tray (3) are arranged in sequence in the spray channel (5) along the falling direction of the alkali liquid sprayed by the atomizing nozzle (4). The water separation tray (2) is sealed and fixed to the inner wall of the alkali washing tower (1). The water separation tray (2) ) is provided with a drip hole (6) through it, the drip hole (6) is used to drip alkali solution, the jet disc (3) is installed under the water separation disc (2), a gap is left between the peripheral wall of the jet disc (3) and the inner wall of the alkali washing tower (1) as a gas passage (7), the jet disc (3) is provided with a gas nozzle (8), the jet disc (3) extracts the acid tail gas entering the alkali washing tower (1) and sprays it out through the gas nozzle (8), and the gas outlet direction of the gas nozzle (8) is matched with the drip hole (6); The water separation disk (2) and the air jet disk (3) are arranged in two or more groups in the alkali washing tower (1); the distance between the top of the air nozzle (8) and the bottom of the water dripping hole (6) in the height direction is 1 cm to 3 cm; one air nozzle (8) on the air jet disk (3) corresponds to one water dripping hole (6) on the water separation disk (2); The drip hole (6) has a diameter that decreases from large to small in the direction of the alkali solution sprayed from the atomizing nozzle (4) and is funnel-shaped. The drip hole (6) collects and drips the alkali solution toward the outlet direction of the gas nozzle (8). The alkali solution dripping from the drip hole (6) cooperates with the acidic tail gas sprayed from the gas nozzle (8) to form a rapid neutralization point (9). The interior of the jet disc (3) is hollow to form a gas separation cavity (10), the gas separation cavity (10) is connected to the inner cavity of the alkali washing tower (1) through a connecting pipe (12), an electromagnetic valve pump (11) is installed on the connecting pipe (12), the electromagnetic valve pump (11) intermittently extracts the acid tail gas in the inner cavity of the alkali washing tower (1) and transports it into the gas separation cavity (10), the peripheral wall of the jet disc (3) is provided with a mounting column (13), the mounting column (13) is used to fix the jet disc (3) and the alkali washing tower (1) and leave a gas passage (7) for the acid gas; The gas nozzle (8) comprises an air inlet chamber (14), an air outlet chamber (15) and an air outlet (16); the air inlet chamber (14) and the air outlet chamber (15) are arranged along the outflow direction of the acid tail gas; the air outlet (16) is arranged on the air outlet chamber (15) for the acid gas to be ejected; a valve (17) is also arranged at the air outlet (16); the valve (17) opens when the air pressure is higher than a threshold value, and closes when the air pressure is lower than the threshold value; the volume from the air inlet chamber (14) to the air outlet chamber (15) becomes smaller and smaller; The alkali washing tower (1) is connected and installed on an alkali barrel (18) below. The alkali barrel (18) is used to load alkali solution. The top of the alkali barrel (18) is provided with a liquid inlet (19). The liquid inlet (19) is used to pour the alkali solution into the alkali barrel (18). The bottom of the side wall of the alkali barrel (18) is provided with a liquid discharge port (20). The liquid discharge port (20) is used to discharge the alkali solution whose alkalinity is reduced after the neutralization reaction. An air inlet pipe (21) is also provided on the top of the alkali barrel (18), and the air inlet pipe (21) discharges the acidic tail gas into the alkali barrel (18); the end of the air inlet pipe (21) that discharges the acidic tail gas is immersed in the alkali solution in the alkali barrel (18); The atomizing nozzle (4) is connected to the bottom of the alkali barrel (18) through a liquid infusion pipe (22), and a liquid pump (23) is provided on the liquid infusion pipe (22). The liquid pump (23) supplies the alkali solution in the alkali barrel (18) to the atomizing nozzle (4) through the liquid infusion pipe (22); The top of the alkali washing tower (1) is provided with a straight discharge port (24), and the straight discharge port (24) discharges the acid gas after the neutralization reaction into the air; The acid tail gas efficient neutralization method comprises the following steps: Step 1: The air intake pipe (21) discharges the acidic tail gas into the alkali barrel (18), the exhaust port of the air intake pipe (21) is located below the alkali liquid level in the alkali barrel (18), and the acidic tail gas reacts with the alkali liquid to neutralize; Step 2: The acidic tail gas is in the alkali barrel (18), and the solenoid valve pump (11) intermittently extracts the acidic tail gas and sends it to the jet disk (3). The jet disk (3) sprays the acidic tail gas through the air nozzle (8), and the acidic tail gas contacts the alkali solution leaking from the drip hole (6) of the water separation disk (2) to produce a neutralization reaction; Step 3: the acidic tail gas rises in the alkali barrel (18) and enters the alkali washing tower (1), passes through the air passage (7) and the dripping hole (6) in the alkali washing tower (1), reaches the bottom of the atomizing nozzle (4), and reacts with the alkali solution sprayed from the atomizing nozzle (4) to neutralize; Step 4: After a series of neutralization reactions, the acidic tail gas is directly discharged into the air through the direct discharge port (24).

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