A two-stage demister for a desulfurization tower

Abstract

A two-stage demister for a desulfurization tower comprises a tower body, a primary demister layer and a secondary demister layer, wherein the primary demister layer and the secondary demister layer are sequentially arranged in the tower body from bottom to top along the airflow direction, and the demister blade spacing of the secondary demister layer is smaller than that of the primary demister layer. The utility model provides a two-stage demister for a desulfurization tower, which is not easy to accumulate sediment and is easy to disassemble, clean and replace.

Description

Technical Field

[0001] The utility model belongs to the technical field of desulfurization towers, in particular to a two-stage demister for a desulfurization tower. Background Art

[0002] With the development of my country's construction, transportation, packaging and home appliance industries, aluminum plates are widely used due to their low price, light weight, good durability and corrosion resistance. Among the many production methods of aluminum plates, the casting and rolling method is currently a widely used method. The casting and rolling method requires the first step of obtaining aluminum liquid, and the aluminum liquid will emit harmful gases and solid particles during the melting process. After being treated by spraying alkaline solution in the front stage of the desulfurization tower, there will still be a small amount of fine droplets and dust. If they are not treated and directly discharged into the air, they will still cause pollution to the environment. The common method of dealing with droplets is to set a demister at the outlet of the desulfurization tower so that the droplets are adsorbed on the blades when passing through the blades of the demister, but the blades will inevitably accumulate sediment gradually during use, and the blades need to be cleaned and replaced regularly. The common single-layer demister is more likely to accumulate sediment and is not suitable for replacement. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, the utility model provides a two-stage demister for a desulfurization tower, which is not prone to sediment accumulation and is easy to disassemble, clean and replace.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A two-stage demister for a desulfurization tower comprises a tower body, a primary demister layer and a secondary demister layer. The primary demister layer and the secondary demister layer are sequentially arranged in the tower body from bottom to top along the airflow direction. The demister blade spacing of the secondary demister layer is smaller than that of the primary demister layer.

[0006] Furthermore, the two-stage demister for the desulfurization tower also includes an inner tower supporting edge and an inner tower supporting rectangular tube. The inner tower supporting edge is arranged on the inner wall of the tower body where the primary demisting layer and the secondary demisting layer are located. The inner tower supporting rectangular tube is arranged at the inner tower body cavity diameter where the primary demisting layer and the secondary demisting layer are located. The primary demisting layer and the secondary demisting layer are respectively located on the inner tower supporting edge and the inner tower supporting rectangular tube at their locations.

[0007] The primary demisting layer and the secondary demisting layer are both composed of a plurality of demisting modules, and the demisting module is composed of a group of streamlined demisting blades arranged vertically in parallel, and the demisting blades are fixed on a fixed U-shaped groove for limiting the movement of the demisting blades.

[0008] When the utility model is used as the demister at the outlet of the desulfurization tower, the mist first passes through the primary demister and then the secondary demister. Because the blade spacing of the primary demister is large, the demister as the first layer in contact with the mist is less likely to be blocked by precipitation. The droplet concentration in the mist filtered by the primary demister decreases, and the droplet concentration is further reduced by filtering through the secondary demister with a smaller blade spacing. Due to the primary demister, large particle droplets that are more likely to block the blades are absorbed first, which will slow down the blocking process of the secondary demister blades. Each layer adopts a modular design, which is easy to disassemble, clean and replace.

[0009] The beneficial effects of the utility model are mainly manifested in: it is not easy to accumulate sediments and is easy to disassemble, clean and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall arrangement of a two-stage demister for a desulfurization tower;

[0011] Figure 2 This is a schematic diagram of the location of the demisting layer and desulfurization tower.

[0012] Figure 3 It is a top view of the defogging layer.

[0013] Figure 4 This is the front view of the defogger module.

[0014] Figure 5 It is a top view of the defogger module.

[0015] Figure 6 is a side view of the defogger module.

[0016] The figures are marked as follows: 1-tower body, 2-primary demisting layer, 3-secondary demisting layer, 4-support edge inside the tower, 5-support rectangular tube inside the tower, 6-fixed U-shaped groove, 7-demister module, 71-demister blades. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Reference Figure 1 to Figure 6 A two-stage demister for a desulfurization tower comprises a tower body 1, a primary demister layer 2 and a secondary demister layer 3. The primary demister layer 2 and the secondary demister layer 3 are arranged in sequence from bottom to top in the tower body 1 along the air flow direction. The demister blade spacing of the secondary demister layer 3 is smaller than that of the primary demister layer 2.

[0019] Furthermore, the two-stage demister for the desulfurization tower also includes an inner tower supporting edge 4 and an inner tower supporting rectangular tube 5. The inner tower supporting edge 4 is arranged on the inner wall of the tower body where the primary demisting layer 2 and the secondary demisting layer 3 are located. The inner tower supporting rectangular tube 5 is arranged at the inner diameter of the tower body where the primary demisting layer 2 and the secondary demisting layer 3 are located. The primary demisting layer 2 and the secondary demisting layer 3 are respectively located on the inner tower supporting edge 4 and the inner tower supporting rectangular tube 5 at their respective locations.

[0020] The primary demisting layer 2 and the secondary demisting layer 3 are both composed of a plurality of demisting modules 7. The demisting module 7 is composed of a group of streamlined demisting blades 71 arranged vertically in parallel. The demisting blades 71 are fixed on a fixed U-shaped groove 6 for limiting the movement of the demisting blades.

[0021] In this embodiment, an inner tower support edge 4 is provided inside the tower body 1, and an inner tower support rectangular tube 5 is provided in the center for supporting the demister module 7. The fixed U-shaped groove 6 is combined with a group of streamlined demister blades to limit the movement of the demister blades 71 to form a demister module 7. The primary demister layer 2 and the secondary demister layer 3 are both composed of a plurality of demister modules 7 arranged horizontally; the spacing between the demister blades 71 of the secondary demister layer 3 is smaller than that of the primary demister layer 2. The demister blades 71 are streamlined and arranged vertically in parallel to form the demister module 7.

[0022] The working process of this embodiment is as follows: the mist first passes through the primary demister and then the secondary demister. Because the blade spacing of the primary demister is larger, the demister as the first layer in contact with the mist is less likely to be blocked by precipitation. The droplet concentration in the mist filtered by the primary demister decreases, and the droplet concentration is further reduced by filtering through the secondary demister with a smaller blade spacing. Due to the presence of the primary demister, large particle droplets that are more likely to block the blades are absorbed first, which will slow down the blocking process of the secondary demister blades. Each layer adopts a modular design, which is easy to disassemble, clean and replace.

[0023] The contents described in the embodiments of this specification are merely enumerations of implementation forms of the utility model concept and are for illustrative purposes only. The protection scope of the utility model should not be considered to be limited to the specific forms described in this embodiment, and the protection scope of the utility model also extends to equivalent technical means that ordinary technicians in this field can think of based on the concept of the utility model.

Claims

1. A two-stage demister for a desulfurization tower, characterized in that: The two-stage demister for the desulfurization tower comprises a tower body, a primary demister layer and a secondary demister layer. The primary demister layer and the secondary demister layer are sequentially arranged in the tower body from bottom to top along the airflow direction. The demister blade spacing of the secondary demister layer is smaller than that of the primary demister layer.

2. A two-stage demister for a desulfurization tower as claimed in claim 1, characterized in that: The two-stage demister for the desulfurization tower also includes an inner tower supporting edge and an inner tower supporting rectangular tube. The inner tower supporting edge is arranged on the inner wall of the tower body where the primary demisting layer and the secondary demisting layer are located. The inner tower supporting rectangular tube is arranged at the inner diameter of the tower body where the primary demisting layer and the secondary demisting layer are located. The primary demisting layer and the secondary demisting layer are respectively located on the inner tower supporting edge and the inner tower supporting rectangular tube at their respective locations.

3. A two-stage demister for a desulfurization tower as claimed in claim 1 or 2, characterized in that: The primary demisting layer and the secondary demisting layer are both composed of a plurality of demisting modules, and the demisting module is composed of a group of streamlined demisting blades arranged vertically in parallel, and the demisting blades are fixed on a fixed U-shaped groove for limiting the movement of the demisting blades.

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