Deacidification absorption tower

Abstract

The invention relates to the technical field of gas purification, in particular to a deacidification absorption tower which comprises an absorption tower body and a plurality of filler baskets. The absorption tower body comprises a tower drum; a plurality of filler baskets are stacked in the tower drum; the filler basket is provided with a suspender; the upper end and the lower end of the suspender corresponding to each filler basket are respectively connected to the vertically adjacent suspenders, so that the plurality of filler baskets are connected through the plurality of suspenders; the upper end of the top suspender is connected to the top of the tower drum, so that the plurality of filler baskets are hung at the top end of the tower drum; replacement doors are arranged at the filler basket at the top and the filler basket at the bottom of the tower drum, so that the filler baskets can enter and exit from the tower drum through the replacement doors; and filler is arranged in the filler basket. When the filler is replaced, the filler basket at the bottommost end can be taken out through the replacement door at the bottom of the tower barrel, and then a new filler basket can be put into the tower barrel through the replacement door at the top after the filler basket descends by one grid. Therefore, the purpose of replacing the filler is achieved. The replacement efficiency is improved, and normal production is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of gas purification, in particular to a deacidification absorption tower. Background Art

[0002] A desulfurization absorption tower is a key piece of equipment used to remove acidic gases such as sulfur dioxide and carbon dioxide from gases. Its core structure typically consists of a tower body, packing layers, a spray system, and a gas-liquid separator. Its operating principle is as follows: gas enters the tower from the bottom and countercurrently contacts the desulfurization agent sprayed from the top of the tower in the packing layers, chemically absorbing acidic gases such as sulfur dioxide and carbon dioxide. The purified gas is discharged from the top of the tower, while the desulfurization agent, enriched with acidic gases, flows out from the bottom of the tower for subsequent regeneration and recycling.

[0003] In deacidification absorption towers, fillers are primarily used to increase the gas-liquid contact area and promote efficient mass transfer. Their porous or structured surfaces allow the desulfurizer to form a liquid film, fully mixing with the gas and improving the absorption efficiency of acid gases. This, in turn, reduces airflow resistance, optimizes flow distribution within the tower, and ensures stable operation.

[0004] In deacidification absorption towers, packing can lose efficiency after long-term operation due to sulfide deposition, scaling, corrosion, or mechanical blockage, necessitating regular cleaning or replacement. Currently, chemical cleaning (such as acid or alkaline cleaning) is used to dissolve deposits, while mechanical flushing is used to remove physical blockages. If packing deteriorates significantly (such as breakage or corrosion perforation), the system must be shut down and disassembled in sections for replacement. At the same time, the tower's inner wall must be inspected for corrosion to ensure efficient system operation.

[0005] The removal and replacement process of the deacidification absorption tower packing mainly includes: after the system is isolated and drained, the operating personnel enter the tower through the manhole and remove the old packing layer by layer from top to bottom (random packing is vacuum suction or manual cleaning, and structured packing is lifted in sections), and the corrosion of the supporting grid and the inner wall of the tower is checked simultaneously; after the tower body is thoroughly cleaned, the new packing is loaded in layers according to the design requirements (to ensure uniform distribution), and finally an air tightness test and amine liquid circulation commissioning are carried out. The entire process must strictly comply with explosion-proof and anti-corrosion safety regulations to ensure that the system returns to the best operating state.

[0006] This method of packing removal and replacement has the following major drawbacks: The confined space inside the tower easily accumulates toxic gases such as sulfur dioxide, posing a risk of poisoning and explosion, and placing high operational risks; the replacement process requires the entire system to be shut down, disrupting continuous production and causing significant economic losses; and the reliance on a large number of people to enter the tower for cleaning and filling is inefficient and labor-intensive, and the harsh environment can easily lead to occupational health issues. Therefore, improvements are needed to improve the efficiency of internal packing replacement and cleaning. Summary of the Invention

[0007] The object of the present invention is to provide a deacidification absorption tower, which can easily replace the internal filler and ensure stable production.

[0008] The embodiments of the present invention are achieved through the following technical solutions: A deacidification absorption tower comprises an absorption tower body and a plurality of packing baskets; the absorption tower body comprises a tower; a plurality of the packing baskets are stacked inside the tower; the packing baskets are provided with hangers; the upper and lower ends of the hanger corresponding to each packing basket are respectively connected to the upper and lower adjacent hangers, so that a plurality of packing baskets are connected through the hangers; the upper end of the top hanger is connected to the top of the tower, so that a plurality of the packing baskets are hung on the top of the tower; the tower is provided with replacement doors at the packing baskets at the top and bottom, so that the packing baskets can enter and exit the tower through the replacement doors; packing is provided inside the packing basket.

[0009] Furthermore, it also includes a sealing mechanism; the sealing mechanism includes a lifting ring, a sealing ring and several pushing members arranged along the circumferential direction of the tower; several of the pushing members are telescopically arranged on the inner wall of the tower so that the pushing members can extend into the interior of the tower along the radial direction of the tower or retract into the interior of the inner wall of the tower; the lifting ring is liftable inside the interior of the tower; the connection between the lifting ring and the pushing member is arranged in an inclined shape to cooperate with each other so that the pushing member is pushed out into the interior of the tower when the lifting ring is raised; the sealing ring includes a sealing part and a sealing belt arranged on the side of the sealing part; the sealing part is connected to several of the pushing members so that the pushing member can push the sealing part to abut the outer wall of the filling basket; the sealing belt is fitted to the inner wall of the tower; each of the filling baskets is correspondingly provided with a set of sealing mechanisms; the tower is also provided with a screw threadedly connected to several of the lifting rings so that several of the lifting rings can be lifted and lowered when the screw rotates.

[0010] Furthermore, it also includes a drive ring and a drive motor; the drive ring is rotatably arranged inside the inner wall of the tower; the drive motor is arranged in the tower and is transmission-connected to the drive ring; the inner wall of the drive ring and the outer wall of the screw rod are provided with transmission teeth that cooperate with each other, so that the screw rod follows the rotation when the drive ring rotates.

[0011] Furthermore, a plurality of the screw rods are provided and the plurality of the screw rods are evenly distributed along the circumference of the tower.

[0012] Furthermore, the upper portion of the filler basket is also covered with a separatory plate; the separatory plate is in a conical shape with the tip facing downward; a through hole for the suspension rod to pass through is provided at the center of the separatory plate; the separatory plate is provided with a plurality of through holes.

[0013] Furthermore, the connection between two adjacent booms is provided with threads, and the threads of the two booms are in opposite directions; a connecting nut is provided at the connection between every two booms; and the threads inside the connecting nut are matched with the threads of the two booms.

[0014] Furthermore, the lifting ring is provided with a dovetail guide groove; the pushing member is matched with the guide groove and provided with a dovetail guide block so that the guide block can slide along the guide groove.

[0015] Furthermore, a convex ring is provided on the inner wall of the tower along its circumferential protrusion; the convex ring is provided with a plurality of telescopic holes for the extension and contraction of the push piece; sealing belts are provided on both sides of the sealing ring; the two sealing belts are covered on the side surfaces of the convex ring and are pressed against the convex ring by a pressure ring; the pressure ring is fixed to the convex ring by a plurality of screws.

[0016] Furthermore, the pushing member is provided with a connecting groove whose opening is smaller than the interior; and the sealing ring is embedded in the connecting groove.

[0017] Furthermore, a plurality of guide rods are provided inside the inner wall of the tower corresponding to the lifting ring.

[0018] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects: When using the deacidification absorption tower of the present invention, filler is divided into individual filler baskets, and several filler baskets are suspended by a crossbar. To replace the filler, the lowest filler basket is removed through a replacement door at the bottom of the tower. After the filler basket is lowered one space, a new filler basket can be inserted through a replacement door at the top. This achieves the purpose of filler replacement, improves replacement efficiency, and ensures normal production.

[0019] A sealing mechanism allows the packing basket to be raised and lowered within the tower and sealed against the tower's inner wall. A liquid distributor plate evenly redistributes the liquid to the packing as it passes through each layer of the packing basket, effectively preventing the on-off effect. This also reduces the number of liquid redistribution mechanisms, simplifying the absorption tower's structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the appearance of the deacidification absorption tower of the present invention.

[0021] Figure 2 Schematic diagram of the internal structure of the deacidification absorption tower of the present invention.

[0022] Figure 3 It is a schematic diagram of the partial structure inside the deacidification absorption tower of the present invention.

[0023] Figure 4 Schematic diagram of the separatory plate.

[0024] Figure 5 Schematic diagram of setting up the push piece inside the tower.

[0025] Figure 6 for Figure 5 Enlarged view of point a in the middle.

[0026] Figure 7 Schematic diagram of the driving structure of several lifting rings.

[0027] Figure 8 Schematic diagram of the cooperation between the sealing ring and the push piece.

[0028] Figure 9 This is a schematic diagram of the sealing ring being pushed tightly against the stuffing basket by the pushing piece.

[0029] Figure markings: 1-tower, 2-replacement door, 3-convex ring, 4-pressure ring, 5-gas inlet, 6-purified gas outlet, 7-sprinkler, 8-liquid outlet, 9-cross bar, 10-filling basket, 11-placement step, 12-hanging rod, 13-hydraulic cylinder, 14-lifting ring, 15-sealing part, 16-thrust member, 17-guide rod, 18-sealing belt, 19-screw, 20-drive ring, 21-drive motor, 22-separating plate, 23-through hole, 24-through hole, 25-connecting nut, 26-guide groove, 27-guide block, 28-connecting groove. DETAILED DESCRIPTION

[0030] like Figures 1-9 As shown, this embodiment provides a deacidification absorption tower, including an absorption tower body and a number of filler baskets 10. The basic working principle of the absorption tower body is to use chemical reagents such as desulfurizers to react chemically with acidic components such as sulfur dioxide and carbon dioxide in the gas, thereby removing them from the gas. The basic structure of the absorption tower body includes a tower 1, a gas inlet 5 at the bottom, a purified gas outlet 6 at the top, a filler area in the middle, and components such as a sprayer 7 and a demister at the top of the tower. The filler basket 10 is a filler area located in the middle of the tower 1, and fillers are arranged inside it, thereby increasing the gas-liquid contact area and promoting efficient mass transfer. Its porous or structured surface allows the desulfurizer to form a liquid film, which is fully mixed with the gas, thereby improving the absorption efficiency of the acidic gas, while reducing the airflow resistance and optimizing the flow distribution in the tower.

[0031] After entering the absorption tower at the bottom, the gas flows upward within the tower, countercurrently contacting the desulfurizer sprayed down from the sprayer 7 at the top of the tower. In the packing area, the gas and liquid phases mix thoroughly, and the acidic components are absorbed by the desulfurizer at the packing. The purified gas is then discharged from the top of the tower. The rich liquid, which has absorbed the acidic components, flows out of the liquid outlet 8 at the bottom of the tower and enters the regeneration system for regeneration and recycling.

[0032] The core part of the deacidification absorption tower in this embodiment is the absorption tower body, which is mainly composed of a tower 1. Inside the tower 1, several filling baskets 10 are arranged in a stacked state. Each filling basket 10 is provided with a hanger 12, and the hangers 12 corresponding to adjacent filling baskets 10 are connected to each other through the upper and lower ends. The hanger 12 supports the filling basket 10 so that the filling basket 10 is suspended inside the tower 1. Specifically, a thread is provided at the connection between two adjacent hangers 12, and the thread directions of the two hangers 12 are opposite, and a connecting nut 25 is provided in conjunction with it. The thread inside the connecting nut 25 is adapted to the thread of the two hangers 12. By rotating the connecting nut 25, the two adjacent hangers 12 can be brought closer to each other to be connected as one, or moved away from each other to separate the two filling baskets 10. This allows several filling baskets 10 to be connected into a whole in sequence through the hanger 12.

[0033] The upper end of the top suspension rod 12 is directly connected to the top of the tower 1. Specifically, a crossbar 9 can be installed at the top of the tower 1, also equipped with a suspension rod 12. This suspension rod 12 is connected to the suspension rod 12 of the topmost filling basket 10, so that the suspension rod 12 of the filling basket 10 is connected to the crossbar 9, thereby lifting the filling basket 10. In this way, several filling baskets 10 are securely attached to the top of the tower 1. Replacement doors 2 are provided at the top and bottom of the tower 1, corresponding to the top and bottom filling baskets 10, respectively. When the filling basket 10 needs to be inspected, the filling needs replaced, or maintained, the replacement doors 2 can be opened and the filling basket 10 can be moved in and out of the tower 1 through the replacement doors 2, greatly facilitating operation and maintenance of the filling basket 10. Specifically, the bottommost connecting nut 25 is first tightened through the bottom replacement door 2 to separate the bottommost filling basket 10. Then, the bottommost filling basket 10 and the filling inside can be removed through the bottom replacement door 2. Next, the filling baskets 10 inside the tower 1 are lowered by one filling basket 10's height, allowing the currently bottom filling basket 10 to rest on the placement step 11 at the bottom of the tower 1's inner wall. The bottom filling basket 10 is now supported on the placement step 11, while the upper filling basket 10 is supported by the central suspension rod 12. The space created by lowering the top filling basket 10 by one filling basket 10's height is just enough for a new filling basket 10 to be inserted and connected through the top replacement door 2. Repeat this process to replace filling baskets 10 one by one.

[0034] Placing the filler in the filler basket 10 allows one basket of filler to be replaced at a time, thereby improving efficiency. By taking out from the bottom and putting in from the top simultaneously, there is no need to disassemble the entire group of filler baskets 10. The time to replace a filler basket 10 is shortened from several hours in the traditional way to tens of minutes, which greatly reduces the downtime of the absorption tower and improves production efficiency. Traditional absorption towers require manual entry into the tower to replace fillers, which is labor-intensive and poses safety risks. The present invention uses an external replacement door 2 and a hanging structure, so that operators can complete the replacement of the filler basket 10 outside the tower, avoiding the dangerous environment of entering the tower. The overall downward movement of the group of filler baskets 10 avoids damage to the equipment caused by frequent disassembly of the upper structure, reduces equipment maintenance costs, and extends the service life of the absorption tower. When the type or quantity of filler needs to be adjusted, the filler basket 10 at a specific position can be directly added or replaced through the top replacement door 2 without the need to modify the entire system, thereby improving the adaptability and flexibility of the equipment.

[0035] To facilitate the overall lifting of the plurality of filling baskets 10 within the tower 1, a device such as a hydraulic cylinder 13 can be provided on the crossbar 9, so that the crossbar 9 is lifted and lowered by the hydraulic cylinder 13. When the filling baskets 10 are supported on the placement steps 11, the upper filling basket 10 may tilt. However, due to the narrow interior space of the tower 1, the filling baskets 10 lean against the inner wall of the tower 1 and do not fall over.

[0036] Generally, operating platforms and stairs are provided around large tower equipment so that operators can operate on the operating platforms. The deacidification absorption tower in this embodiment is provided with operating platforms at both replacement doors 2 .

[0037] The present invention is also provided with a sealing mechanism to ensure the sealing inside the absorption tower, so that the gas can only flow upward through the packing basket 10 but cannot flow through the gap between the packing basket 10 and the inner wall of the tower 1, thereby improving the desulfurization effect.

[0038] The sealing mechanism mainly includes a lifting ring 14, a sealing ring and a plurality of push members 16. The plurality of push members 16 are evenly distributed along the circumference of the tower 1 and are telescopically arranged on the inner wall of the tower 1. Figure 5 、 Figure 6 、 Figure 8 and Figure 9 As shown, specifically, a convex ring 3 is provided on the inner wall of the tower 1 along its circumferential direction, and a plurality of telescopic holes are provided on the convex ring 3 for the extension and contraction of the pushing piece 16. The pushing piece 16 can extend into the interior of the tower 1 or retract into the interior of the inner wall of the tower 1 in the telescopic hole along the radial direction of the tower 1.

[0039] A lifting ring 14 is positioned within the tower 1, allowing it to be raised and lowered. The connection between the lifting ring 14 and the push member 16 is designed to form a sloped surface. When the lifting ring 14 is raised, its slope interacts with that of the push member 16, pushing the push member 16 along the telescopic hole and into the tower 1. To ensure the stability and accuracy of the lifting ring 14 during its raising and lowering, several guide rods 17 are installed on the inner wall of the tower 1, corresponding to the lifting ring 14. These guide rods allow the lifting ring 14 to rise and fall smoothly.

[0040] The sealing ring includes a sealing portion 15 and a sealing strip 18 attached to the side of the sealing portion 15. The sealing portion 15 is connected to several thrust members 16. When the thrust members 16 are extended by the lifting ring 14, they push the sealing portion 15 against the outer wall of the packing basket 10. Simultaneously, the sealing strip 18 adheres to the inner wall of the tower 1, forming a good seal between the packing basket 10 and the tower 1. This allows gas to flow upward only through the packing basket 10 and prevents it from flowing through the gap between the packing basket 10 and the inner wall of the tower 1, thereby improving the desulfurization effect. To further enhance the sealing effect, sealing strips 18 are provided on both sides of the sealing ring. Both sealing strips 18 cover the sides of the convex ring 3 and are pressed against the convex ring 3 by a pressure ring 4. The pressure ring 4 is fixed to the convex ring 3 with several screws, ensuring that the sealing strips 18 fit tightly against the convex ring 3 to prevent gas leakage. The sealing rings also seal the thrust members 16 and the telescopic hole, preventing liquid from entering and corroding the internal components. In addition, the pushing member 16 is provided with a connecting groove 28 whose opening is smaller than the interior, and the sealing ring is embedded in the connecting groove 28, so that the connection between the sealing ring and the pushing member 16 is more stable and reliable, and when the pushing member 16 is extended or retracted, the sealing ring is pulled by the pushing member 16 and always adheres to the pushing member 16.

[0041] Each packing basket 10 is equipped with a corresponding sealing mechanism, ensuring that all packing baskets 10 are sealed against the inner wall of the tower 1. The tower 1 also has a screw 19 threadedly connected to several lifting rings 14. When the screw 19 rotates, it drives the lifting rings 14 to rise and fall synchronously, thereby achieving unified control of the sealing rings. This sealing mechanism design effectively prevents gas leakage between the packing baskets 10 and the tower 1, improving desulfurization efficiency.

[0042] During use, the lowering of the lifting rings 14 causes all the pushers 16 to retract, which in turn causes the sealing rings to expand, increasing their inner diameters. This creates a gap between the packing basket 10 and the sealing rings, facilitating the raising and lowering of the packing basket 10. After replacement, the lifting rings 14 rise, causing all the pushers 16 to simultaneously extend into the interior of the tower 1, allowing the sealing rings to once again cling tightly to the outer wall of the packing basket 10, achieving a complete seal.

[0043] Furthermore, the lifting ring 14 is provided with a dovetail-shaped guide groove 26. The pusher 16 is fitted with a dovetail-shaped guide block 27 that can slide along the guide groove 26. When the lifting ring 14 descends, the guide block 27 slides along the guide groove 26, pulling the pusher 16 back into the telescopic hole, thereby expanding the inner diameter of the sealing ring. Because the pushers 16 cannot completely cover the entire sealing ring, the areas of the sealing ring without pushers 16 lose their pushing function and are unable to adhere tightly to the stuffing basket 10. The sealing ring is made of an elastic material such as rubber. Its elasticity allows areas without pushers 16 to be pushed closer to and into contact with the inner wall of the stuffing basket 10 by the surrounding pushers 16. The higher the density of pushers 16, the better the sealing effect. Furthermore, the elasticity of the sealing ring allows the inner diameter of the sealing ring to expand or contract under the action of multiple pushers 16, thereby achieving the desired smooth lifting and sealing effect of the stuffing basket 10.

[0044] In this embodiment, a drive ring 20 and a drive motor 21 are also provided. The drive ring 20 is rotatably arranged inside the inner wall of the tower 1, and the drive motor 21 is fixedly arranged outside the tower 1 and is connected to the drive ring 20 through a transmission mechanism. Specifically, the drive motor 21 is connected to a gear, and the outer wall of the drive ring 20 is provided with teeth that engage with the gear. The inner wall of the drive ring 20 and the outer wall of the screw 19 are provided with transmission teeth that cooperate with each other. When the drive motor 21 is started, it drives the drive ring 20 to rotate, and the transmission teeth on the inner wall of the drive ring 20 engage with the transmission teeth on the outer wall of the screw 19, so that the screw 19 rotates accordingly, thereby realizing the driving of the lifting ring 14. The operation is simple and convenient, and the degree of automation is high.

[0045] To ensure smooth and reliable lifting of the lifting ring 14, a plurality of screw rods 19 are provided, and these screw rods 19 are evenly distributed along the circumference of the tower 1. This allows the lifting ring 14 to be subjected to a more uniform force during the lifting process, thus avoiding tilting or jamming. This drive mechanism design makes the sealing mechanism more convenient to operate and improves the operating efficiency of the equipment.

[0046] A separator 22 is also provided on the top of the packing basket 10. The separator 22 is in the shape of a cone with the tip facing downward. This shape design is conducive to the uniform dispersion of the liquid. A through hole 23 for the suspension rod 12 to pass through is provided at the center of the separator 22. The suspension rod 12 passes through the through hole 23, so that the separator 22 can be firmly installed on the top of the packing basket 10. The separator 22 is also provided with a number of through holes 24, so that the liquid can flow through the through holes 24 to the inside of the packing basket 10 of the lower layer, thereby achieving the effect of liquid redistribution. When the liquid enters the absorption tower, the liquid has a wall-moving effect. Each packing basket 10 is provided with a separator 22 so that the liquid is dispersed through the separator 22 when passing through each packing basket 10, and can be evenly distributed on the packing of the packing basket 10, thereby increasing the contact area between the liquid and the gas and improving the efficiency of the desulfurization reaction. In a traditional absorption tower, the packing is generally divided into two sections, upper and lower, and a liquid redistribution mechanism is provided between the two sections to avoid the wall-moving effect. The liquid separation plate 22 of this embodiment can achieve this effect, so there is no need to set up a liquid redistribution mechanism, making the structure simpler.

[0047] In summary, the present invention realizes efficient desulfurization function and good sealing performance of the deacidification absorption tower through the coordinated cooperation of the above-mentioned components, while facilitating the maintenance and operation of the filler basket 10, and has high practical value and promotion significance.

Claims

1. A deacidification absorption tower, characterized in that: It includes an absorption tower body and several filling baskets; the absorption tower body includes a tower; several filling baskets are stacked inside the tower; the filling baskets are provided with hangers; the upper and lower ends of the hanger corresponding to each filling basket are respectively connected to the upper and lower adjacent hangers, so that several filling baskets are connected through several hangers; the upper end of the top hanger is connected to the top of the tower, so that several filling baskets are hung on the top of the tower; the tower is provided with replacement doors at the filling baskets at the top and bottom, so that the filling baskets can enter and exit the tower through the replacement doors; fillers are provided inside the filling baskets.

2. The deacidification absorption tower according to claim 1, wherein: The cam is secured to the inner wall of the tower and has a plurality of locking members, each of which is secured to a position within the tower frame and has a plurality of locking members, each of which is secured to a position within the tower frame and has a plurality of locking members, each of which is secured to a position within the tower frame and has a plurality of locking members, each of which is secured to a position within the tower frame and has a plurality of locking members, each of which is secured to a position within the tower frame and has a plurality of locking members, each of which is secured to a position within the tower frame and has a plurality of locking members, 3. The deacidification absorption tower according to claim 2, wherein: It also includes a drive ring and a drive motor; the drive ring is rotatably arranged inside the inner wall of the tower; the drive motor is arranged in the tower and is transmission-connected to the drive ring; the inner wall of the drive ring and the outer wall of the screw rod are provided with transmission teeth that cooperate with each other, so that the screw rod rotates with the rotation of the drive ring.

4. The deacidification absorption tower according to claim 3, wherein: The screw rods are provided in a plurality and are evenly distributed along the circumference of the tower.

5. The deacidification absorption tower according to claim 4, characterized in that: The upper part of the filling basket is also covered with a liquid separation plate; the liquid separation plate is in a conical shape with the tip facing downward; a through hole for the suspension rod to pass through is provided at the center of the liquid separation plate; the liquid separation plate is provided with a plurality of through holes.

6. The deacidification absorption tower according to claim 5, characterized in that: The connection between two adjacent booms is provided with a thread, and the thread directions of the two booms are opposite; the connection between every two booms is matched with a connecting nut; the thread inside the connecting nut matches the thread setting of the two booms.

7. The deacidification absorption tower according to claim 6, characterized in that: The lifting ring is provided with a dovetail guide groove; the pushing member is matched with the guide groove and is provided with a dovetail guide block so that the guide block can slide along the guide groove.

8. The deacidification absorption tower according to claim 7, characterized in that: The inner wall of the tower is provided with a convex ring protruding along its circumference; the convex ring is provided with a plurality of telescopic holes for the extension and contraction of the push piece; sealing belts are provided on both sides of the sealing ring; the two sealing belts are covered on the side surfaces of the convex ring and are pressed against the convex ring by a pressure ring; the pressure ring is fixed to the convex ring by a plurality of screws.

9. The deacidification absorption tower according to claim 8, characterized in that: The pushing member is provided with a connecting groove whose opening is smaller than the interior; the sealing ring is embedded in the connecting groove.

10. The deacidification absorption tower according to claim 9, characterized in that: A plurality of guide rods are provided inside the inner wall of the tower corresponding to the lifting ring.

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