Desulfurization dust remover of rotational flow plate tower

Abstract

The utility model discloses a cyclone plate tower desulfurization dust remover which comprises a tower body, a smoke inlet is formed in the lower side of the tower body, a smoke outlet is formed in the top of the tower body, a plurality of layers of first cyclone tower plates are arranged in the middle of the interior of the tower body at intervals, a second cyclone tower plate is arranged on the upper portion of the interior of the tower body, and spraying pipes are arranged between the first cyclone tower plates and the second cyclone tower plate. Inclined special-shaped downcomers are annularly distributed at the bottom of the first rotational flow tower plate, vertical downcomers are annularly distributed between the first rotational flow tower plate and the second rotational flow tower plate, and an overflow port is formed in the lower side of the tower body. The desulfurization dust remover for the rotational flow plate tower has the advantages of simple structure, reliability in connection, good dust removal and demisting effects, easiness in transformation and implementation and the like.

Description

Technical Field

[0001] This utility model relates to the field of dust removal equipment technology, and in particular to a cyclone plate tower desulfurization and dust removal device. Background Technology

[0002] With the acceleration of urbanization, waste disposal has become an increasingly prominent issue. Waste incineration, as an effective waste treatment method, can not only reduce waste volume but also achieve resource utilization through high-temperature incineration. However, the incineration process generates a large amount of flue gas containing pollutants such as sulfur oxides, posing a threat to the environment and human health. Therefore, improving the removal efficiency of sulfur oxides from waste incinerator flue gas is particularly important.

[0003] The cyclone plate desulfurization and dust removal device is a type of jet-type plate scrubber. Flue gas with a certain air pressure and velocity enters from the bottom and exits from the top; the absorbent enters from the top and exits from the bottom. Its plate blades resemble fixed windmill blades; the airflow passing through the blades generates rotation and centrifugal motion. The absorbent is evenly distributed to each blade through a central blind plate, forming a thin liquid layer. This layer, combined with the upward rotating airflow, creates a rotational and centrifugal effect, spraying the liquid into fine droplets. After being thrown against the tower wall, the droplets are collected by gravity into a collection tank and then flow through a downcomer to the blind plate area of ​​the next plate. The absorbent is repeatedly absorbed before finally being discharged from the bottom overflow outlet. The purified flue gas exits from the flue gas outlet at the top of the tower. Because wet desulfurization is used, the purified flue gas often contains water mist, causing secondary carryover problems, requiring further treatment through a specialized demisting and dehydration system.

[0004] Patent document CN112933840A describes a self-forming film cyclone dust collector and demister. It solves the secondary carrying problem by setting a screen cylinder inside the tower body. However, this technical solution causes inconvenience to the fixing of the tower plates, requiring the addition of a support rod in the center of the tower body. Furthermore, since the flue gas to be treated generally enters the tower through a venturi tube, it places high demands on the stability and reliability of the tower plate connection. Under the impact of airflow, the tower plates are prone to tilting or loosening, affecting the use of the equipment. Utility Model Content

[0005] The purpose of this invention is to provide a cyclone plate tower desulfurization and dust removal device to solve the problems existing in the prior art.

[0006] The purpose of this utility model is achieved as follows: A cyclone plate tower desulfurization and dust removal device includes a tower body, with a flue gas inlet on the lower side and a flue gas outlet on the top. Several layers of first cyclone plates are arranged at intervals in the middle of the tower body, and a second cyclone plate is arranged in the upper part of the tower body. A spray pipe is arranged between the first cyclone plates and the second cyclone plates. Inclined shaped downcomers are arranged around the bottom of the first cyclone plates, and vertical downcomers are arranged around the first cyclone plates and the second cyclone plates. An overflow port is provided on the lower side of the tower body.

[0007] The cyclone plate tower desulfurization and dust removal device of this utility model has the advantages of simple structure, reliable connection, and good dust removal and demisting effect. It can also be applied to the technical transformation of existing cyclone plate tower desulfurization and dust removal devices, and has the advantages of convenient construction and low transformation investment.

[0008] As a further improvement of this utility model, the first cyclone tower plate includes a first cyclone blade, a first blind plate connected to the center of the first cyclone blade, and a first annular support connected to the outer edge of the first cyclone blade. The first annular support is provided with a first liquid collection tank communicating with the irregular downcomer. The second cyclone tower plate includes a second cyclone blade, a second blind plate connected to the center of the second cyclone blade, and a second annular support connected to the outer edge of the second cyclone blade. The second annular support is provided with a second liquid collection tank communicating with the vertical downcomer. Both the first cyclone tower plate and the second cyclone tower plate are existing mature structures with advantages such as low manufacturing and procurement costs. Moreover, the connection method with the irregular downcomer and the vertical downcomer is simple and can be achieved by welding or other methods.

[0009] As a further improvement of this utility model, the inner diameter D2 of the second blind plate is 1 / 2 of the inner diameter D1 of the first blind plate, which improves the demisting effect of the second cyclone tower plate and avoids secondary carryover problems to the greatest extent.

[0010] As a further improvement of this utility model, the lateral spacing between the lower ends of the shaped downcomer is 60% to 70% of the inner diameter D1 of the first blind plate, so that the absorbent droplets discharged through the shaped downcomer can fall onto the first blind plate of the lower first swirl tray.

[0011] As a further improvement of this utility model, reinforcing ribs are provided between the first annular support, the second annular support and the inner wall of the tower body, which further improves the reliability of the connection between the first swirl tower plate, the second swirl tower plate and the tower body.

[0012] As a further improvement of this utility model, the first cyclone tower plate has three layers to ensure the desulfurization and dust removal effect.

[0013] As a further improvement of this utility model, the inner diameter of the tower body is 2800-3200mm, the height of the tower body is 8000-12000mm, and the distance between the first swirl tower plate and the second swirl tower plate, and between the first swirl tower plate and the second swirl tower plate, is 1250mm, so as to maintain the processing efficiency and processing effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the internal structure of the cyclone plate tower desulfurization and dust removal device of this utility model.

[0015] Figure 2 for Figure 1 A magnified view of the middle K area.

[0016] Figure 3 This is a top view of the first cyclone plate of the cyclone plate desulfurization and dust removal device of this utility model.

[0017] The components include: 1. Tower body; 2. Smoke inlet; 3. Smoke outlet; 4. First swirl plate; 4A. First swirl blade; 4B. First blind plate; 4C. First annular support; 5. Second swirl plate; 6. Spray pipe; 7. Overflow port; 8. Irregular downcomer; 9. Vertical downcomer; and 10. Reinforcing rib plate. Detailed Implementation

[0018] like Figure 1-2 The cyclone plate tower desulfurization and dust removal device shown includes a tower body 1, a flue gas inlet 2 on the lower side of the tower body 1 and a flue gas outlet 3 on the top. Several layers of first cyclone plates 4 are arranged at intervals in the middle of the tower body 1. A second cyclone plate 5 is arranged in the upper part of the tower body 1. A spray pipe 6 is arranged between the first cyclone plate 4 and the second cyclone plate 5. Four inclined irregular-shaped downcomers 8 are arranged around the bottom of the first cyclone plate 4. Four vertical downcomers 9 are arranged around the first cyclone plate 4 and the second cyclone plate 5. An overflow port 7 is provided on the lower side of the tower body 1.

[0019] like Figure 3 As shown, the first swirl tray 4 includes a first swirl blade 4A, a first blind plate 4B connected to the center of the first swirl blade 4A, and a first annular support 4C connected to the outer edge of the first swirl blade 4A. The first annular support 4C is provided with a first liquid collection tank communicating with the shaped downcomer 8. The lateral spacing D3 between the lower ends of the shaped downcomer 8 is 60% to 70% of the inner diameter D1 of the first blind plate 4B, so that the absorbent droplets discharged through the shaped downcomer 8 can fall onto the first blind plate 4B of the lower first swirl tray 4.

[0020] The second cyclone tray 5 has a similar structure to the first cyclone tray 4, including a second cyclone blade, a second blind plate connected to the center of the second cyclone blade, and a second annular support connected to the outer edge of the second cyclone blade. The second annular support is provided with a second liquid collection tank that communicates with the vertical downcomer. The inner diameter D2 of the second blind plate is half the inner diameter D1 of the first blind plate 4B to improve the demisting effect of the second cyclone tray 5 and minimize the problem of secondary carryover.

[0021] Both the first swirl tray 4 and the second swirl tray 5 are existing mature structures, with advantages such as low manufacturing and procurement costs. Furthermore, their connection to the irregular downcomer 8 and the vertical downcomer is simple, and can be achieved through welding or other methods. Reinforcing ribs 10 are provided between the first annular support 4C, the second annular support, and the inner wall of the tower body 1, further improving the reliability of the connection between the first swirl tray 4, the second swirl tray 5, and the tower body 1.

[0022] In this embodiment, the first cyclone tray 4 has three layers to ensure desulfurization and dust removal efficiency. The inner diameter of the tower body 1 is 2800-3200mm, and the height of the tower body 1 is 8000-12000mm. The spacing between the first cyclone tray 4 and the second cyclone tray 5, and between the first cyclone tray 4 and the second cyclone tray 5, is 1250mm to maintain processing efficiency and effect.

[0023] In this embodiment, when the cyclone plate tower desulfurization and dust removal device is working, the sulfur-containing and dust-containing flue gas enters the tower body 1 tangentially through the flue gas inlet 2, rotates and rises, and rises through multiple layers of first cyclone tower plates 4. Under the guidance of the first cyclone blades 4A, the rotation of the flue gas is enhanced. The absorbent liquid is sprayed from top to bottom through the spray pipe 6. After being evenly distributed in the area of ​​the first blind plate 4B, it is dispersed into droplets and atomized by the rising high-speed airflow. The sulfur dioxide in the flue gas reacts with the droplets and is absorbed. The dust particles and droplets in the flue gas are thrown towards the inner wall of the tower body 1 under the action of centrifugal force, collide and fall, and the absorbent liquid that accumulates after flowing down the tower wall flows down through the special-shaped downcomer 8 and is finally discharged through the overflow port 7 and enters the ash settling tank. The atomized gas is demisted through the second cyclone tower plate 5 at the top. The droplets are discharged downward through the vertical downcomer 9 into the special-shaped downcomer 8 and finally discharged through the overflow port 7. The purified flue gas after removing water mist is discharged from the flue gas outlet 3.

[0024] The cyclone plate tower desulfurization and dust removal device of this embodiment has the advantages of simple structure, reliable connection, and good dust removal and demisting effect. It can also be applied to the technical transformation of existing cyclone plate tower desulfurization and dust removal devices, and has the advantages of convenient construction and low transformation investment.

[0025] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A cyclone plate tower desulfurization and dust removal device, comprising a tower body, wherein a flue gas inlet is provided on the lower side of the tower body and a flue gas outlet is provided on the top, characterized in that: The tower body is provided with several layers of first swirl plates at intervals in the middle, and a second swirl plate is provided in the upper part of the tower body. A spray pipe is provided between the first swirl plate and the second swirl plate. Inclined shaped downcomers are arranged around the bottom of the first swirl plate. A vertical downcomer is arranged around the first swirl plate and the second swirl plate. An overflow port is provided on the lower side of the tower body.

2. The cyclone plate tower desulfurization and dust removal device according to claim 1, characterized in that: The first cyclone tray includes a first cyclone blade, a first blind plate connected to the center of the first cyclone blade, and a first annular support connected to the outer edge of the first cyclone blade. The first annular support is provided with a first liquid collection tank communicating with a shaped downcomer. The second cyclone tray includes a second cyclone blade, a second blind plate connected to the center of the second cyclone blade, and a second annular support connected to the outer edge of the second cyclone blade. The second annular support is provided with a second liquid collection tank communicating with a vertical downcomer.

3. The cyclone plate tower desulfurization and dust removal device according to claim 2, characterized in that: The inner diameter D2 of the second blind plate is half the inner diameter D1 of the first blind plate.

4. The cyclone plate tower desulfurization and dust removal device according to claim 3, characterized in that: The lateral spacing between the lower ends of the irregular downcomers is 60% to 70% of the inner diameter D1 of the first blind plate.

5. The cyclone plate tower desulfurization and dust removal device according to claim 2, characterized in that: The first and second annular supports are provided with reinforcing ribs between themselves and the inner wall of the tower.

6. The cyclone plate tower desulfurization and dust removal device according to any one of claims 1-5, characterized in that: The first cyclone tray has three layers.

7. The cyclone plate tower desulfurization and dust removal device according to any one of claims 1-5, characterized in that: The inner diameter of the tower body is 2800-3200mm, the height of the tower body is 8000-12000mm, and the distance between the first swirl plate and the second swirl plate, and between the first swirl plate and the second swirl plate, is 1250mm.

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