An exhaust gas treatment absorption tower

Abstract

The utility model discloses a waste gas treatment absorption tower, including the tower body, the outer wall fixed intercommunication of tower body has the elbow pipe, the inside fixedly connected with the inclined fairing of tower body, the inside fixedly connected with T type lower through pipe of tower body, the outer wall of tower body is equipped with two mounting holes, and the inside fixedly connected with the spray pipe of two mounting holes. The utility model discloses the design of elbow pipe combines the inclined fairing, makes the downward cyclone when waste gas enters the tower body, prolongs the gas -liquid contact path, and reduces the initial flow rate through the buffer effect of T type lower through pipe, avoids the flow rate too high problem caused by the straight -through pipe, ensures gas -liquid two -phase sufficient contact, promotes purification efficiency, through double -layer spray pipe and shower nozzle, lower shower nozzle is located inside T type lower through pipe, can purify waste gas and capture large particle impurities in advance, and the upper shower nozzle cooperates the further strengthening gas -liquid mass transfer of filler, forms the ladder type treatment, reduces the filler layer load.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to a waste gas treatment absorption tower. Background Technology

[0002] An absorption tower for waste gas treatment is a key piece of equipment used in industrial waste gas treatment. Its main function is to remove harmful components from waste gas through physical or chemical methods, purify the gas, and reduce environmental pollution. The working principle of the absorption tower is based on the gas-liquid two-phase contact mass transfer theory. The absorbent reacts with or dissolves pollutants in the waste gas, transferring harmful substances to the liquid phase, thereby achieving the purification purpose.

[0003] An absorption tower typically consists of an inlet, an outlet, a spray system, a packing layer, and an absorbent circulation system. After the waste gas enters the tower, the spray system evenly distributes the absorbent onto the surface of the packing, ensuring thorough contact between the waste gas and the absorbent. Pollutants are captured by the absorbent and converted into harmless or less harmful substances. The purified gas is then discharged from the top of the tower.

[0004] In existing technologies, when waste gas is introduced into the waste gas treatment absorption tower, if a straight pipe is used, the initial flow velocity is too high (usually exceeding the design value by 30% to 50%), which causes a sharp reduction in the gas-liquid two-phase contact time. Furthermore, the packing is prone to blockage after a long period of time. Current maintenance relies on traditional manholes, which requires shutdown. Therefore, we propose a waste gas treatment absorption tower to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a waste gas treatment absorption tower.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A waste gas treatment absorption tower includes a tower body, with a curved pipe fixedly connected to the outer wall of the tower body, an inclined guide plate fixedly connected to the inside of the tower body, a T-shaped down-pass pipe fixedly connected to the inside of the tower body, two mounting holes on the outer wall of the tower body, spray pipes fixedly connected to the inside of each mounting hole, multiple spray heads fixedly connected to the outer walls of each of the two spray pipes, a docking hole on the outer wall of the T-shaped down-pass pipe, the inner wall of the docking hole being fixedly connected to the outer wall of one of the spray pipes, two arc-shaped sealing gaskets fixedly connected to the inside of the tower body, a mesh frame placed between the two arc-shaped sealing gaskets, and a purification component on the outer wall of the tower body.

[0008] Preferably, the purification component includes a circular sealing door, the outer wall of the tower body is fixedly connected to the outer wall of the circular sealing door, one end of the mesh frame is fixedly connected to the outer wall of the circular sealing door, the outer wall of the circular sealing door has an assembly hole, the inner wall of the assembly hole is fixedly connected to an aeration pipe, the outer wall of the aeration pipe has multiple aeration holes, the inside of the mesh frame is filled with multiple packing materials, and the outer wall of the aeration pipe is threaded with an end cap. By setting the purification component, the waste gas can be purified and the blockages on multiple packing materials can be cleared.

[0009] Preferably, one end of the two spray pipes is fixedly connected to the same water pump, and one end of the aeration pipe is fixedly connected to an aeration pump. A one-way valve is added to the outer wall of the aeration pipe to prevent backflow of waste gas.

[0010] Preferably, the outer wall of the end cap is slidably connected to the inner wall of the mesh frame, and an annular sealing gasket is fixedly connected to one end of the mesh frame. The annular sealing gasket is made of corrosion-resistant rubber material, which also increases the sealing performance of the contact surface between the gasket and the tower body.

[0011] Preferably, a fiberglass baffle plate is fixedly connected inside the tower body, an exhaust pipe and a drain pipe are fixedly connected to the outer wall of the tower body, and a centrifugal fan is fixedly connected to one end of the exhaust pipe.

[0012] Preferably, the outer wall of the tower body has a door opening.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] This design employs a curved pipe combined with an inclined guide plate, causing the exhaust gas to form a downward swirling flow upon entering the tower, extending the gas-liquid contact path. The T-shaped lower pipe acts as a buffer, reducing the initial flow velocity and preventing excessive velocity issues associated with straight pipes. This ensures sufficient contact between the gas and liquid phases, improving purification efficiency. A double-layered spray pipe and nozzles are used; the lower nozzle, located inside the T-shaped lower pipe, pre-purifies the exhaust gas and captures large particulate impurities, while the upper nozzle, in conjunction with the packing, further enhances gas-liquid mass transfer, creating a stepped treatment process and reducing the load on the packing layer. Compressed gas is injected into the center of the packing through aeration pipes and holes, and combined with the flushing effect of the spray liquid, adhering blockages are blown off in real time, maintaining packing permeability without shutdown. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1This is a three-dimensional structural diagram of a waste gas treatment absorption tower proposed in this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of a waste gas treatment absorption tower proposed in this utility model.

[0018] Figure 3 This is a partial cross-sectional structural diagram of a waste gas treatment absorption tower proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the arc-shaped sealing gasket structure of a waste gas treatment absorption tower proposed in this utility model.

[0020] In the diagram: 1. Tower body; 2. Bend; 3. Inclined guide plate; 4. T-shaped bottom pipe; 5. Spray pipe; 6. Spray head; 7. Arc-shaped sealing gasket; 8. Circular sealing door; 9. Aeration pipe; 10. Mesh frame; 11. Packing material; 12. Aeration hole; 13. End cap; 14. Annular sealing gasket; 15. Fiberglass baffle demister; 16. Exhaust pipe; 17. Drain pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] Depend on Figures 1-4 As shown, a waste gas treatment absorption tower is disclosed, comprising a tower body 1. The outer wall of the tower body 1 has an opening, and a bent pipe 2 is fixedly connected to the outer wall of the tower body 1. An inclined guide plate 3 is fixedly connected inside the tower body 1. When the bent pipe 2 and the tower body 1 are inlet, a cut angle is formed, and the inclined guide plate 3 causes the waste gas to swirl downward along the outer wall of a T-shaped lower pipe 4. The top of the T-shaped lower pipe 4 has a loop structure, and the bottom has a circular pipe structure. The T-shaped lower pipe 4 is fixedly connected inside the tower body 1. Two mounting holes are opened on the outer wall of the tower body 1, and spray pipes 5 are fixedly connected inside the two mounting holes. One end of the two spray pipes 5 is fixedly connected to the same water pump.

[0023] Multiple spray heads 6 are fixedly connected to the outer walls of the two spray pipes 5. The outer wall of the T-shaped downpipe 4 is provided with a docking hole, and the inner wall of the docking hole is fixedly connected to the outer wall of one of the spray pipes 5.

[0024] The tower body 1 has two arc-shaped sealing gaskets 7 fixedly connected inside, and a mesh frame 10 is placed between the two arc-shaped sealing gaskets 7. The tower body 1 also has a fiberglass baffle demister 15 fixedly connected inside. The fiberglass baffle demister 15 is designed based on inertial collision, gravity settling and multiple deflection to achieve gas-liquid separation. The outer wall of the tower body 1 is fixedly connected to an exhaust pipe 16 and a drain pipe 17. One end of the drain pipe 17 can be connected to the existing tank. One end of the exhaust pipe 16 is fixedly connected to a centrifugal fan.

[0025] The outer wall of the tower body 1 is equipped with a purification component, which includes a circular sealing door 8. The outer wall of the tower body 1 and the outer wall of the circular sealing door 8 are fixedly connected by existing bolts. One end of the mesh frame 10 is fixedly connected to the outer wall of the circular sealing door 8.

[0026] An assembly hole is provided on the outer wall of the circular sealing door 8. An aeration pipe 9 is fixedly connected to the inner wall of the assembly hole. An aeration pump is fixedly connected to one end of the aeration pipe 9. Multiple aeration holes 12 are provided on the outer wall of the aeration pipe 9. When the aeration pump operates, it delivers compressed gas into the aeration pipe 9 and then discharges it through the multiple aeration holes 12. Multiple packing materials 11 are placed inside the mesh frame 10. An end cap 13 is threaded onto the outer wall of the aeration pipe 9. The outer wall of the end cap 13 is slidably connected to the inner wall of the mesh frame 10. An annular sealing gasket 14 is fixedly connected to one end of the mesh frame 10.

[0027] When replacing the packing 11, remove the circular sealing door 8 from the tower body 1, take out the mesh frame 10 and the circular sealing door 8 as a whole, and take out multiple packings 11. Rotate the end cover 13 to expose the packings 11 inside the mesh frame 10, add new packings 11 into the mesh frame 10, and rotate the end cover 13 to limit the multiple packings 11 to prevent the packings 11 from loosening during use. Pall rings can be used for the packings 11.

[0028] Working Principle: During operation, the centrifugal fan creates a negative pressure environment inside the tower body 1 through the exhaust pipe 16. One end of the bend 2 is connected to the exhaust gas outlet, drawing the exhaust gas into the tower body 1. As the exhaust gas enters the tower body 1 through the bend 2, it swirls downwards through the inclined guide plate 3, contacting the absorbent liquid at the bottom of the tower body 1. Then, it flows upwards through the T-shaped lower pipe 4, slowing down the flow rate of the exhaust gas. Meanwhile, the water pump delivers the absorbent liquid to the inside of two spray pipes 5, where multiple spray nozzles 6 spray downwards. The multiple spray nozzles 6 on the lower spray pipe 5 are located in the T-shaped lower pipe... Inside pipe 4, the exhaust gas is pre-purified and large particulate impurities are carried downwards. The exhaust gas passes through the mesh frame 10 and enters multiple packing materials 11. In conjunction with multiple spray nozzles 6 above, the exhaust gas is sprayed downwards, allowing the exhaust gas to come into contact with the absorbent liquid. During long-term use, in order to prevent the packing materials 11 from becoming too clogged, compressed gas can be transported to the aeration pipe 9 by the operation of the aeration pump, and then discharged through multiple aeration holes 12. The airflow is sprayed outwards from the center of the mesh frame 10, applying external force to blow off the blockages adhering to the packing materials 11. In conjunction with the downward spraying of the absorbent liquid, some of the blockages are carried away.

[0029] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0030] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas treatment absorption column comprising a column body (1), characterized in that The outer wall of the tower body (1) is fixedly connected with a bend (2), the inside of the tower body (1) is fixedly connected with an inclined guide plate (3), the inside of the tower body (1) is fixedly connected with a T-shaped down-through pipe (4), the outer wall of the tower body (1) has two mounting holes, the inside of the two mounting holes is fixedly connected with a spray pipe (5), the outer walls of the two spray pipes (5) are fixedly connected with multiple spray heads (6), the outer wall of the T-shaped down-through pipe (4) has a docking hole, the inner wall of the docking hole is fixedly connected to the outer wall of one of the spray pipes (5), the inside of the tower body (1) has two arc-shaped sealing gaskets (7), a mesh frame (10) is placed between the two arc-shaped sealing gaskets (7), and the outer wall of the tower body (1) is provided with a purification component.

2. An exhaust gas treatment absorption column according to claim 1, characterised in that, The purification component includes a circular sealing door (8), the outer wall of the tower body (1) is fixedly connected to the outer wall of the circular sealing door (8), one end of the mesh frame (10) is fixedly connected to the outer wall of the circular sealing door (8), the outer wall of the circular sealing door (8) is provided with an assembly hole, the inner wall of the assembly hole is fixedly connected with an aeration pipe (9), the outer wall of the aeration pipe (9) is provided with a plurality of aeration holes (12), a plurality of packing materials (11) are placed inside the mesh frame (10), and an end cap (13) is threaded onto the outer wall of the aeration pipe (9).

3. An exhaust gas treatment absorption column according to claim 2, wherein, The two spray pipes (5) are connected to the same water pump at one end, and the aeration pipe (9) is connected to an aeration pump at one end.

4. An exhaust gas treatment absorption column according to claim 2, wherein, The outer wall of the end cap (13) is slidably connected to the inner wall of the mesh frame (10), and an annular sealing gasket (14) is fixedly connected to one end of the mesh frame (10).

5. An exhaust gas treatment absorption column according to claim 1, wherein, The tower body (1) is fixedly connected to a fiberglass baffle plate (15), and the outer wall of the tower body (1) is fixedly connected to an exhaust pipe (16) and a drain pipe (17). One end of the exhaust pipe (16) is fixedly connected to a centrifugal fan.

6. An exhaust gas treatment absorption column according to claim 1, wherein, The outer wall of the tower body (1) has a door opening.

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