Three-dimensional crocodile mouth type wet desulfurization tower uniform distribution device

Abstract

The utility model discloses a three -dimensional crocodile mouth type wet flue gas desulfurization tower even distribution device, including even distribution board body, even distribution board body surface evenly distributed with several crocodile mouth type orifice, even distribution board body forms three -dimensional structure through several crocodile mouth type orifice, and crocodile mouth type orifice both sides evenly set up multiple sawtooth grooves. Through even distribution board body can effectively increase the residence time and flow path of pulp liquid, make the contact time of pulp liquid and flue gas prolong, has improved mass transfer efficiency significantly, the special structure of crocodile mouth type orifice makes the strong turbulent effect when flue gas and oxidizing wind pass, improves the impact and crushing capacity of pulp liquid, and the gas -liquid contact area has increased, through the full mixing of multiple small air current and pulp liquid formed by crocodile mouth type orifice, makes the mixing intensity of gas -liquid two -phase in tower improve significantly, and mass transfer effect improves obviously.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas desulfurization equipment, specifically a three-dimensional alligator mouth type wet desulfurization tower uniform distribution device. Background Technology

[0002] Wet desulfurization technology is currently the most widely used flue gas desulfurization technology. Among them, limestone-gypsum wet desulfurization is widely used due to its advantages such as high desulfurization efficiency and simple and reliable system. In a wet desulfurization system, the desulfurization tower is the core equipment, and its performance directly affects the desulfurization effect and operating economy.

[0003] In wet desulfurization towers, sufficient contact between the gas and liquid phases is the key to ensuring desulfurization efficiency. Currently, the common uniform distribution devices in desulfurization towers are mainly of two types: planar uniform distribution plates and perforated uniform distribution plates.

[0004] While existing two-dimensional planar uniform distribution plates can achieve uniform flue gas distribution to a certain extent, allowing the flue gas to pass evenly upwards through the desulfurization spray system and the demisting system, they have the following obvious shortcomings:

[0005] The limited contact time between the slurry and the flue gas leads to insufficient mass transfer and limited desulfurization efficiency.

[0006] The flow field formed by the flue gas after passing through the planar uniformly distributed plate is relatively smooth, and the gas-liquid disturbance is insufficient, which affects the mass transfer effect.

[0007] The rectification effect on the flue gas inside the tower is limited, making it difficult to effectively solve the problem of excessive local gas velocity.

[0008] The circular hole structure has limited impact and crushing capacity against slurry and oxidation wind, and insufficient gas-liquid mixing intensity.

[0009] The jet effect formed after the flue gas passes through the round hole can easily lead to excessively high local flow velocity, affecting the gas-liquid contact effect;

[0010] When the slurry falls through the round hole, it tends to form large droplets, which limit the contact area with the flue gas and reduce the desulfurization efficiency.

[0011] Chinese patent CN206810053U discloses a dish-shaped flue gas uniform distribution device for use in a wet desulfurization absorption tower, comprising several dish-shaped modules. Each dish-shaped module includes a concave arc-shaped wall and a circular edge integrally formed along the circumference of the end of the arc-shaped wall. Several circular through holes are evenly distributed on the arc-shaped wall. This design reduces the flue gas velocity by creating a convection interference space through the arc-shaped wall, but it still uses a traditional circular hole structure, which has limited effect on improving the gas-liquid mixing intensity.

[0012] Therefore, this utility model provides a three-dimensional alligator mouth type wet desulfurization tower uniform distribution device to solve the above problems. Utility Model Content

[0013] This invention provides a three-dimensional alligator mouth-shaped wet desulfurization tower uniform distribution device, which aims to solve the problems mentioned in the background art.

[0014] To achieve the above objectives, this utility model provides the following technical solution:

[0015] A three-dimensional alligator mouth-shaped wet desulfurization tower uniform distribution device includes a uniform distribution plate body. The surface of the uniform distribution plate body is uniformly distributed with a number of alligator mouth-shaped holes. The uniform distribution plate body forms a three-dimensional structure through the number of alligator mouth-shaped holes. The alligator mouth-shaped holes are rectangular with semi-circular openings at both ends. The cross-section of the alligator mouth-shaped holes is arc-shaped, and multiple serrated grooves are uniformly opened on both sides of the alligator mouth-shaped holes.

[0016] As a preferred technical solution of this application, the arc-shaped opening of the alligator mouth-shaped hole is arranged facing upward or downward.

[0017] As a preferred technical solution of this application, the shape of the uniformly distributed plate body is wavy, dome-shaped or other curved surface shape.

[0018] As a preferred technical solution of this application, the angle between the arc-shaped opening of the alligator mouth-shaped hole and the plane of the uniformly distributed plate body is 30°-60°.

[0019] As a preferred technical solution of this application, the alligator mouth-shaped holes are arranged in an alternating pattern on the uniformly distributed plate body.

[0020] As a preferred technical solution of this application, the uniformly distributed plate body is made of corrosion-resistant material, such as stainless steel or stainless steel.

[0021] As a preferred technical solution of this application, multiple impeller-shaped protrusions are fixedly provided inside the semi-circular openings at both ends of the alligator mouth-shaped hole 2.

[0022] Extending slurry contact time: By setting the uniformly distributed plate body into a three-dimensional structure, the residence time and flow path of the slurry can be effectively increased, thus extending the contact time between the slurry and the flue gas and significantly improving the mass transfer efficiency.

[0023] Enhanced impact and crushing capabilities: The special structure of the alligator mouth-shaped orifice generates a strong turbulence effect when flue gas and oxidation wind pass through, improving the impact and crushing capabilities of the slurry and increasing the gas-liquid contact area.

[0024] Improved mixing intensity: The thorough mixing of multiple fine gas streams formed by the alligator mouth-shaped orifice with the slurry significantly improves the mixing intensity of the gas and liquid phases in the tower, resulting in a marked improvement in mass transfer. Attached Figure Description

[0025] Figure 1A schematic diagram of a three-dimensional alligator mouth-shaped wet desulfurization tower uniform distribution device;

[0026] Figure 2 This is a partial structural schematic diagram of a three-dimensional alligator mouth-shaped wet desulfurization tower uniform distribution device;

[0027] Figure 3 A cross-sectional view of the alligator mouth-shaped hole;

[0028] Figure 4 This is a structural diagram of another embodiment of the alligator mouth-shaped hole.

[0029] In the picture:

[0030] 1. Evenly distributed plate body; 2. Alligator mouth shaped hole; 3. Serrated groove; 4. Convex tooth. Detailed Implementation

[0031] 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.

[0032] See Figures 1-3 As shown, this utility model provides a three-dimensional alligator mouth type wet desulfurization tower uniform distribution device. The device is installed inside the desulfurization tower, located above the slurry pool and below the spray device. The flue gas inlet is located above the slurry pool. The above is the installation method of the existing uniform distribution device, which will not be described in detail here. It includes a uniform distribution plate body 1. The surface of the uniform distribution plate body 1 is evenly distributed with a number of alligator mouth type holes 2. The uniform distribution plate body 1 forms a three-dimensional structure through the number of alligator mouth type holes 2. The alligator mouth type hole 2 is a rectangle with a length of 30mm and a width of 10mm. It has semi-circular openings at both ends. The cross-section of the alligator mouth type hole 2 is arc-shaped. Multiple serrated grooves 3 are evenly opened on both sides of the alligator mouth type hole 2. The depth of the serrated grooves 3 is 2mm.

[0033] In this embodiment, the arc-shaped opening of the alligator mouth-shaped hole 2 is set to face upward or downward.

[0034] In this embodiment, the uniformly distributed plate body 1 is wavy, dome-shaped or other curved shape to increase the residence time and flow path of the slurry on the plate body.

[0035] In this embodiment, the angle between the arc-shaped opening of the alligator mouth-shaped hole 2 and the plane of the uniformly distributed plate body 1 is 30°-60°.

[0036] In this embodiment, the alligator mouth-shaped holes 2 are arranged in an alternating pattern on the uniformly distributed plate body 1 to enhance the gas-liquid mixing effect.

[0037] In this embodiment, the uniformly distributed plate body 1 is made of corrosion-resistant material, such as 316L stainless steel or 2205 stainless steel.

[0038] See Figure 4 As shown in this embodiment, multiple impeller-shaped protrusions 4 are fixedly provided inside the semi-circular openings at both ends of the alligator mouth-shaped hole 2 to achieve a swirling effect.

[0039] The specific work process is as follows:

[0040] After the raw flue gas containing pollutants such as SO2 enters the desulfurization tower (not shown in the figure) from the flue gas inlet, it first passes through the three-dimensional alligator mouth-shaped uniformly distributed plate body 1;

[0041] When the flue gas passes through the alligator mouth-shaped orifice 2, it is divided into multiple fine airflows. At the same time, due to the special shape of the alligator mouth-shaped orifice 2, the flue gas generates a strong turbulence effect, forming a complex flow field.

[0042] The slurry sprayed from the spraying device flows downward and collides and mixes strongly with the flue gas passing through the alligator mouth-shaped orifice 2. Due to the special structure of the alligator mouth-shaped orifice 2, the contact area between the flue gas and the slurry is greatly increased, and the mass transfer efficiency is significantly improved.

[0043] Meanwhile, the oxidizing air entering from below, when passing through the alligator mouth-shaped hole 2, strongly impacts and breaks up the slurry, forming smaller droplets and bubbles, which further improves the gas-liquid mixing intensity and oxidation effect.

[0044] After the flue gas has fully reacted, it continues to rise, passes through a demister (not shown in the figure) to remove water mist, and is then discharged from the clean smoke outlet.

[0045] The reacted slurry falls into a slurry tank (not shown in the figure) and can be recycled after treatment.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A three-dimensional alligator mouth-shaped wet desulfurization tower uniform distribution device, comprising a uniform distribution plate body, characterized in that: The surface of the uniformly distributed plate body is evenly distributed with several alligator mouth-shaped holes. The uniformly distributed plate body forms a three-dimensional structure through several alligator mouth-shaped holes. The alligator mouth-shaped holes are rectangular with semi-circular openings at both ends. The cross-section of the alligator mouth-shaped holes is arc-shaped, and multiple serrated grooves are evenly opened on both sides of the alligator mouth-shaped holes.

2. The three-dimensional alligator mouth type wet desulfurization tower uniform distribution device according to claim 1, characterized in that: The arc-shaped opening of the alligator mouth-shaped hole is set to face upwards or downwards.

3. The three-dimensional alligator mouth type wet desulfurization tower uniform distribution device according to claim 1, characterized in that: The uniformly distributed plate body has a wave-shaped or dome-shaped shape.

4. The three-dimensional alligator mouth type wet desulfurization tower uniform distribution device according to claim 1, characterized in that: The angle between the arc-shaped opening of the alligator mouth-shaped hole and the plane of the uniformly distributed plate body is 30°-60°.

5. The three-dimensional alligator mouth type wet desulfurization tower uniform distribution device according to claim 1, characterized in that: The alligator mouth-shaped holes are arranged in an alternating pattern on the uniformly distributed plate body.

6. The three-dimensional alligator mouth type wet desulfurization tower uniform distribution device according to claim 1, characterized in that: The uniformly distributed plate body is made of corrosion-resistant material, such as 316L stainless steel or 2205 stainless steel.

7. The three-dimensional alligator mouth type wet desulfurization tower uniform distribution device according to claim 1, characterized in that: Multiple impeller-shaped protrusions are fixed inside the semi-circular openings at both ends of the alligator mouth-shaped hole.

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