Flue gas distribution device of flue gas desulfurization and denitrification spray absorption tower

Abstract

The utility model relates to the technical field of absorption towers, and discloses a flue gas distribution device of a flue gas desulfurization and denitrification spray absorption tower, which comprises a tower body, a distribution mechanism is arranged in the tower body, a mounting mechanism is arranged outside the distribution mechanism, the distribution mechanism comprises an absorption pipe, the top of the absorption pipe is fixedly connected with a gas outlet hopper, and the gas outlet hopper is fixedly connected with a gas outlet pipe. The flue gas distribution device of the flue gas desulfurization and denitrification spray absorption tower comprises an absorption pipe, a gas outlet hopper is arranged at the top of the absorption pipe, a supporting frame is fixedly connected to the interior of the absorption pipe, a rotating shaft is rotatably connected to the middle of the supporting frame, fan blades are fixedly connected to the exterior of the rotating shaft, and a distribution plate is arranged at the top of the gas outlet hopper. The section area of the outlet is gradually increased, so that the flow velocity of the flue gas is slowed down, the flue gas is diffused all around due to the reduction of the flow velocity and the increase of the section area, a more uniform distribution state is formed, the problem that the concentration of the flue gas in a local area is too high or too low is avoided, and the effect of uniformly distributing the flue gas is achieved.

Description

Technical Field

[0001] This utility model relates to the field of absorption tower technology, specifically to a flue gas distribution device for a flue gas desulfurization and denitrification spray absorption tower. Background Technology

[0002] An absorption tower is a device used to perform absorption operations. Based on the gas-liquid phase contact pattern, they are classified into three categories. The first category includes plate towers, bubbling absorption towers, and stirred bubbling absorption towers where the gas is dispersed in the liquid phase as bubbles. The second category includes ejectors, venturi tubes, and spray towers where the liquid is dispersed in the gas phase as droplets. The third category includes packed absorption towers and falling film absorption towers where the liquid moves in a film-like motion and contacts the gas phase. The flow patterns of the gas and liquid phases within the tower can be either countercurrent or cocurrent. Countercurrent operation is commonly used, with the absorbent added from the top of the tower and flowing downwards, contacting the gas flowing upwards. The liquid that has absorbed the absorbent is discharged from the bottom of the tower, and the purified gas is discharged from the top.

[0003] Most existing flue gas desulfurization and denitrification spray absorption towers introduce flue gas into the tower through simple pipe connections. However, this method often results in uneven distribution of flue gas in the pipes and tower, with excessively high flue gas concentrations in some areas and excessively low concentrations in others. This uneven distribution of flue gas not only reduces desulfurization and denitrification efficiency but also increases energy consumption and wear on the equipment, shortening its service life. Utility Model Content

[0004] The purpose of this utility model is to provide a flue gas distribution device for a flue gas desulfurization and denitrification spray absorption tower, in order to solve the problem mentioned in the background art that most existing flue gas desulfurization and denitrification spray absorption towers introduce flue gas into the tower through simple pipe connections. However, this method often leads to uneven distribution of flue gas in the pipes and tower, with excessively high flue gas concentration in some areas and excessively low concentration in others. This uneven flue gas distribution not only reduces desulfurization and denitrification efficiency, but also increases energy consumption and wear of the equipment, and shortens the service life of the equipment.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a flue gas distribution device for a flue gas desulfurization and denitrification spray absorption tower, comprising a tower body, wherein a distribution mechanism is provided inside the tower body, and an installation mechanism is provided outside the distribution mechanism;

[0006] The distribution mechanism includes an absorption tube, an air outlet hopper fixedly connected to the top of the absorption tube, a support frame fixedly connected inside the absorption tube, a rotating shaft rotatably connected to the middle of the support frame, fan blades fixedly connected to the outside of the rotating shaft, and a distribution plate provided on the top of the air outlet hopper.

[0007] Preferably, one end of the tower body is fixedly connected to a flue gas inlet pipe, and one end of the absorption pipe is fixedly connected to one end of the flue gas inlet pipe.

[0008] Preferably, the fan blades are provided in multiple ways, and the multiple fan blades are arranged in a ring array.

[0009] Preferably, the distribution plate has multiple mesh openings in the middle, and the air outlet is configured in a funnel shape.

[0010] Preferably, the mounting mechanism includes a first mounting ring, the top of which has a groove, a fixing block is mounted inside the groove, and a second mounting ring is fixedly connected to the top of the fixing block.

[0011] Preferably, one end of the first mounting ring is fixedly connected to the outer wall of the air outlet hopper, the other end of the first mounting ring is fixedly connected to the inner wall of the tower body, and the second mounting ring is fixedly connected to the outside of the distribution plate.

[0012] Preferably, one end of the fixing block is provided with a protrusion, and two snap-fit ​​blocks are fixedly connected to the inner side of the groove.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0014] First, this utility model introduces flue gas into the interior of the absorption tower through a flue gas inlet pipe. The flue gas is then connected to the inlet pipe via an absorption pipe, allowing it to enter and impact the fan blades. The presence of a support frame and rotating shaft allows the fan blades to rotate, further accelerating the flow of the flue gas and enabling it to enter the absorption pipe more quickly. This reduces flow resistance within the pipe, thereby improving the efficiency of flue gas delivery. Simultaneously, the rotation of the fan blades generates airflow disturbance and tangential force, which helps to distribute the flue gas more evenly within the pipe and reduces eddies and dead zones. The distributed flue gas is ejected from the outlet hopper, and this uniform distribution continues into the tower, making the flue gas distribution within the tower even more uniform. At the same time, because the outlet hopper is designed in a funnel shape, the cross-sectional area at the outlet gradually increases, thereby slowing down the flow rate of the flue gas. Due to the reduced flow rate and increased cross-sectional area, the flue gas diffuses in all directions, forming a more uniform distribution, avoiding the problem of excessively high or low flue gas concentration in some areas. Furthermore, the flue gas is guided by the distribution plate, making the flow of the flue gas within the tower smoother and more stable, reducing the formation of eddies and turbulence, and reducing the impact force of the flue gas on the inner wall of the equipment, thus achieving the effect of uniform flue gas distribution.

[0015] Secondly, this utility model fixes the gas outlet and absorption pipe by fixing the first mounting ring to the inner wall of the tower body. Then, the second mounting ring on the outside of the distribution plate is aligned with the first mounting ring, so that the fixing block at the bottom of the second mounting ring is inserted into the groove at the top of the first mounting ring. Then, the second mounting ring is rotated so that the protrusion at one end of the fixing block is engaged in the snap-fit ​​block, thereby fixing the second mounting ring and achieving the operation of fixing the distribution plate. When disassembling the distribution plate, it is only necessary to rotate the distribution plate in the opposite direction, thus achieving the effect of facilitating the disassembly and installation of the distribution plate. Attached Figure Description

[0016] Figure 1 This is a perspective view of the entire utility model;

[0017] Figure 2 This is a perspective view of the first mounting ring of this utility model;

[0018] Figure 3 This is a cross-sectional view of the present invention;

[0019] Figure 4 This is an enlarged view of section A of this utility model.

[0020] The components are: 1. Tower body; 2. Distribution mechanism; 3. Installation mechanism; 11. Flue gas inlet pipe; 21. Absorption pipe; 22. Gas outlet hopper; 23. Support frame; 24. Rotating shaft; 25. Fan blade; 26. Distribution plate; 31. First mounting ring; 32. Fixing block; 33. Second mounting ring; 34. Snap-fit ​​block. 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 protection scope of the present utility model.

[0022] This utility model provides the following technical solution:

[0023] Example 1

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 A flue gas distribution device for a flue gas desulfurization and denitrification spray absorption tower includes a tower body 1, a distribution mechanism 2 is provided inside the tower body 1, and an installation mechanism 3 is provided outside the distribution mechanism 2.

[0025] The distribution mechanism 2 includes an absorption pipe 21, an air outlet 22 fixedly connected to the top of the absorption pipe 21, a support frame 23 fixedly connected inside the absorption pipe 21, a rotating shaft 24 rotatably connected to the middle of the support frame 23, a fan blade 25 fixedly connected to the outside of the rotating shaft 24, and a distribution plate 26 provided on the top of the air outlet 22.

[0026] One end of the tower body 1 is fixedly connected to the flue gas inlet pipe 11, and one end of the absorption pipe 21 is fixedly connected to one end of the flue gas inlet pipe 11.

[0027] Multiple fan blades 25 are provided, and the multiple fan blades 25 are arranged in a ring array.

[0028] The distribution plate 26 has multiple mesh openings in the middle, and the air outlet 22 is shaped like a trumpet.

[0029] Through the above technical solution, flue gas is introduced into the interior of the absorption tower body 1 through the flue gas inlet pipe 11, and then connected to the flue gas inlet pipe 11 through the absorption pipe 21, allowing the flue gas to enter the absorption pipe 21 and impact the fan blades 25. Due to the presence of the support frame 23 and the rotating shaft 24, the fan blades 25 can rotate, further accelerating the flow of flue gas and allowing it to enter the absorption pipe 21 more quickly. This reduces the flow resistance of the flue gas in the pipe, thereby improving the flue gas delivery efficiency. Simultaneously, the rotation of the fan blades 25 generates certain airflow disturbances and tangential forces, which help to distribute the flue gas more evenly within the pipe and reduce eddies and dead zones within the pipe. The flue gas, evenly distributed within the absorption pipe 21, is ejected from the outlet hopper 22. This even distribution extends further into the tower, making the flue gas distribution within the tower even more uniform. Simultaneously, because the outlet hopper 22 is funnel-shaped, the cross-sectional area at the outlet gradually increases, thereby slowing down the flow rate of the flue gas. Due to the reduced flow rate and increased cross-sectional area, the flue gas diffuses outwards, forming a more uniform distribution, avoiding the problem of excessively high or low flue gas concentration in local areas. Furthermore, the flue gas is guided by the distribution plate 26, making the flow of the flue gas within the tower body 1 smoother and more stable, reducing the formation of eddies and turbulence, and reducing the impact force of the flue gas on the inner wall of the equipment, thus achieving the effect of uniform flue gas distribution.

[0030] Example 2

[0031] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 Furthermore, based on Embodiment 1, the following is obtained: the mounting mechanism 3 includes a first mounting ring 31, the top of the first mounting ring 31 is provided with a groove, a fixing block 32 is installed on the inner side of the groove, and a second mounting ring 33 is fixedly connected to the top of the fixing block 32.

[0032] One end of the first mounting ring 31 is fixedly connected to the outer wall of the air outlet hopper 22, the other end of the first mounting ring 31 is fixedly connected to the inner wall of the tower body 1, and the second mounting ring 33 is fixedly connected to the outside of the distribution plate 26.

[0033] One end of the fixing block 32 is provided with a protrusion, and two snap-fit ​​blocks 34 are fixedly connected to the inner side of the groove.

[0034] Through the above technical solution, the first mounting ring 31 is fixedly connected to the inner wall of the tower body 1, thereby fixing the gas outlet hopper 22 and the absorption pipe 21. Then, the second mounting ring 33 outside the distribution plate 26 is aligned with the first mounting ring 31, so that the fixing block 32 at the bottom of the second mounting ring 33 is inserted into the groove at the top of the first mounting ring 31. Then, the second mounting ring 33 is rotated, so that the protrusion at one end of the fixing block 32 is engaged in the snap-fit ​​block 34, thereby fixing the second mounting ring 33 and achieving the operation of fixing the distribution plate 26. When disassembling the distribution plate 26, it is only necessary to rotate the distribution plate 26 in the opposite direction, thereby achieving the effect of facilitating the disassembly and installation of the distribution plate 26.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flue gas desulfurization and denitrification spray absorption tower flue gas distribution device, comprising a tower body (1), characterized in that: The inside of the tower body (1) is provided with a distribution mechanism (2), and the outside of the distribution mechanism (2) is provided with a mounting mechanism (3); The distribution mechanism (2) comprises an absorption pipe (21), the top of the absorption pipe (21) is fixedly connected with an air outlet (22), the inside of the absorption pipe (21) is fixedly connected with a support frame (23), the middle of the support frame (23) is rotatably connected with a rotating shaft (24), the outside of the rotating shaft (24) is fixedly connected with a fan blade (25), and the top of the air outlet (22) is provided with a distribution plate (26).

2. The flue gas distribution device of a flue gas desulfurization and denitrification spray absorption tower according to claim 1, characterized in that: One end of the tower body (1) is fixedly communicated with a flue gas inlet pipe (11), and one end of the absorption pipe (21) is fixedly communicated with one end of the flue gas inlet pipe (11).

3. The flue gas distribution device of a flue gas desulfurization and denitrification spray absorption tower according to claim 1, characterized in that: The fan blade (25) is provided with a plurality of fan blades (25) arranged in an annular array.

4. The flue gas distribution device of a flue gas desulfurization and denitrification spray absorption tower according to claim 1, characterized in that: The middle of the distribution plate (26) is provided with a plurality of mesh holes, and the air outlet (22) is arranged in a horn shape.

5. The flue gas distribution device of a flue gas desulfurization and denitrification spray absorption tower according to claim 1, characterized in that: The mounting mechanism (3) comprises a first mounting ring (31), the top of the first mounting ring (31) is provided with a groove, the inner side of the groove is provided with a fixed block (32), and the top of the fixed block (32) is fixedly connected with a second mounting ring (33).

6. The flue gas distribution device of a flue gas desulfurization and denitrification spray absorption tower according to claim 5, characterized in that: One end of the first mounting ring (31) is fixedly connected with the outer wall of the air outlet (22), the other end of the first mounting ring (31) is fixedly connected with the inner wall of the tower body (1), and the second mounting ring (33) is fixedly connected to the outside of the distribution plate (26).

7. The flue gas distribution device of a flue gas desulfurization and denitrification spray absorption tower according to claim 5, characterized in that: One end of the fixed block (32) is provided with a protrusion, and the inner side of the groove is fixedly connected with two clamping blocks (34).

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