Flue gas inlet guide plate assembly

Abstract

The utility model discloses a flue gas inlet guide plate assembly which comprises a guide plate body, the bottom of the guide plate body is fixedly connected with a flow collecting channel, the outer side of the circumference of the flow collecting channel is fixedly provided with an installation blocking piece, and a plurality of sets of installation holes are evenly formed in the installation blocking piece. The mounting separation blade is screwed on the circumferential side wall of the bottom of the desulfurization tower through a plurality of groups of mounting holes in the mounting separation blade; a dust scraping mechanism is installed on the upper side in the guide plate body, a driving fan is arranged on the dust scraping mechanism, a rotating shaft is fixedly arranged at the top of the driving fan, and a scraping plate is arranged on the circumferential outer wall of the end, away from the driving fan, of the rotating shaft and covers the circumferential outer wall of the guide plate body. According to the flue gas inlet flow guide plate assembly, impurities and scales covering the surface of the flow guide plate body can be scraped off through the scraping plate, the flow guide holes are prevented from being blocked by the impurities and the scales, and it is guaranteed that the flow guide plate body normally conducts flow guide operation for a long time.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment equipment, specifically a flue gas inlet guide plate assembly. Background Technology

[0002] With the increasing emphasis on environmental protection by the country, flue gas desulfurization (FGD) has gradually become widespread in various industries. There are many types of FGD methods with varying efficiencies, but wet FGD remains the dominant method. Among wet FGD processes, spray towers are the primary component. Spray towers have advantages such as low resistance, simple internal structure, and high efficiency. However, they also have disadvantages such as sidewall effects and uneven distribution of flue gas and slurry. Uneven distribution of flue gas can lead to excessive local flue gas volume, which cannot be desulfurized in time, resulting in a decrease in average desulfurization efficiency. The sidewall effect of flue gas and slurry causes the slurry to flow down the sidewall of the cylinder when it comes into contact with the cylinder, reducing the contact area between the flue gas and slurry. At the same time, the flue gas flows faster near the cylinder wall, which cannot react completely in time, resulting in a decrease in desulfurization efficiency. Uneven distribution of slurry can also cause short-circuiting of the flue gas, further reducing desulfurization efficiency.

[0003] To address the aforementioned issues, a search revealed that CN205948654U discloses a flue gas uniform distribution spray desulfurization tower. The tower body includes a flue gas inlet and outlet located at its lower left and top, a spray inlet at its upper right, and an inspection door at its upper part. The flue gas uniform distribution device comprises multiple parallel flue gas distribution pipes and a slurry guide plate. Both ends of the flue gas distribution pipes are connected to the inner wall of the desulfurization tower body.

[0004] Although the aforementioned device can increase the contact area between the spray liquid and the flue gas by setting up the baffle plate, in actual use, the surface of the baffle plate is set horizontally. Dust, impurities and other substances in the flue gas may adhere to the baffle plate and react with the components in the spray liquid to form scale. In addition, solid particles in the spray liquid may also deposit on the surface of the baffle plate, which is difficult to clean later and can easily cause blockage. Utility Model Content

[0005] The purpose of this utility model is to provide a flue gas inlet guide plate assembly to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, a flue gas inlet guide plate assembly is provided, comprising a guide plate body, a flow collection channel fixedly connected to the bottom of the guide plate body, an installation baffle fixedly provided on the outer circumference of the flow collection channel, a plurality of installation holes evenly provided on the installation baffle, and the installation baffle being screwed to the bottom circumferential side wall of the desulfurization tower through the plurality of installation holes; a dust scraping mechanism is installed on the upper inner side of the guide plate body, a drive fan is provided on the dust scraping mechanism, a rotating shaft is fixedly provided on the top of the drive fan, and a scraper is provided on the outer circumferential wall of the end of the rotating shaft away from the drive fan, the scraper covering the outer circumferential wall of the guide plate body.

[0007] Preferably, the guide plate body is a hemispherical structure made of metal, and multiple sets of guide holes are evenly opened on the outer circumference of the guide plate body.

[0008] Preferably, the axial cross-section of the guide plate body and the collection channel is a concentric circle structure, the cross-section of the collection channel is U-shaped, and multiple sets of equally spaced drainage holes are evenly opened at the bottom of the collection channel, with the drainage holes being rectangular.

[0009] Preferably, the dust scraping mechanism includes a drive fan, a bearing housing, a stabilizer, a receiving hole, a rotating shaft, a scraper, a limiting block, and a limiting track. The bearing housing is installed on the outer circumference of the rotating shaft, and five sets of stabilizers are evenly installed on the outer circumference of the bearing housing.

[0010] Preferably, the five sets of stabilizers are centrally symmetrical about the rotation axis, the stabilizers are arranged in a "V" shape, and the ends of the stabilizers are screwed to the inner circumference of the guide plate body.

[0011] Preferably, the scraper is arc-shaped, and the scraper is fixedly connected to the drive fan via a rotating shaft. A brush plate with bristles is adhered to the bottom inner wall of the scraper.

[0012] Preferably, a limiting block is fixedly provided on the inner circumference of the bottom of the scraper, and a limiting track is provided on the outer circumference of the guide plate body. The size of the limiting track is adapted to the size of the limiting block, and the limiting block is slidably disposed inside the limiting track.

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

[0014] 1. This utility model allows flue gas to exit through numerous guide holes as it enters the baffle plate body, mixing with the sprayed liquid flowing downwards. The flue gas sprayed from these numerous guide holes can evenly fill all positions along the axial profile of the desulfurization tower, enabling the desulfurizing agent in the sprayed liquid to more fully contact and react with harmful gases such as sulfur dioxide in the flue gas. This improves desulfurization efficiency, reduces harmful gas emissions, and enhances the effectiveness of flue gas treatment.

[0015] 2. This utility model utilizes the impact of moving flue gas on the interior of the guide plate body, driving a fan to rotate under the force of the wind. A scraper removes impurities and scale covering the surface of the guide plate body, preventing blockage of the guide holes and ensuring the guide plate body can perform normal flow guidance operations for extended periods. By using the upward impact of the flue gas as power, impurities can be removed from the outer circumference of the guide plate body. Directly utilizing the existing flue gas power within the desulfurization tower aligns with energy conservation and environmental protection principles, reducing the overall energy consumption of the desulfurization system.

[0016] 3. This utility model features an arc-shaped surface on the guide plate body. The arc-shaped surface allows scale and impurities to slide off more easily under gravity, making them less likely to accumulate on the guide plate surface. This reduces the risk of blockage caused by scale accumulation, ensuring smooth gas-liquid flow inside the desulfurization tower and maintaining the normal operation of the desulfurization system. During routine cleaning and maintenance of the desulfurization tower, impurities accumulated on the surface of the guide plate body due to scraping by the rotating scraper can be cleaned. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0018] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0019] Figure 2 for Figure 1 A bottom view;

[0020] Figure 3 for Figure 1 Side view;

[0021] Figure 4 for Figure 1 Rear view;

[0022] Figure 5 for Figure 4 Internal structure diagram;

[0023] Figure 6 This is a schematic diagram of the complete structure of the device;

[0024] Figure 7 for Figure 6 A bottom view.

[0025] The following are the labels in the diagram: 1. Guide plate body; 2. Guide hole; 3. Collection channel; 31. Mounting baffle; 32. Drain hole; 4. Dust scraping mechanism; 41. Drive fan; 42. Bearing seat; 43. Stabilizer; 44. Receiving hole; 45. Rotating shaft; 46. Scraper; 47. Limiting block; 48. Limiting track. Detailed Implementation

[0026] 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.

[0027] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] Please see Figures 1-7This utility model provides a flue gas inlet guide plate assembly, including a guide plate body 1. A flow collection channel 3 is fixedly connected to the bottom of the guide plate body 1. An installation baffle 31 is fixedly provided on the outer circumference of the flow collection channel 3. Multiple sets of installation holes are evenly opened on the installation baffle 31. The installation baffle 31 is screwed to the bottom circumferential side wall of the desulfurization tower through the multiple sets of installation holes. A dust scraping mechanism 4 is installed on the upper inner side of the guide plate body 1. A drive fan 41 is provided on the dust scraping mechanism 4. A rotating shaft 45 is fixed on the top of the drive fan 41. A scraper 46 is provided on the outer circumference of the end of the rotating shaft 45 away from the drive fan 41. The scraper 46 covers the outer circumferential side wall of the guide plate body 1.

[0031] Working Principle: In actual use, the mounting baffle 31 at the bottom of the guide plate body 1 is first screwed onto the bottom circumferential side wall of the desulfurization tower through multiple sets of mounting holes. When the flue gas enters the guide plate body 1, it can be discharged through numerous guide holes 2 and mixed with the sprayed liquid flowing downwards. The flue gas sprayed from the numerous guide holes 2 can evenly fill various positions along the axial profile of the desulfurization tower, allowing the desulfurizing agent in the sprayed liquid to more fully contact and react with sulfur dioxide and other harmful gases in the flue gas. More sulfur dioxide molecules have the opportunity to chemically react with the desulfurizing agent. The reaction transforms the flue gas into harmless substances, thereby improving desulfurization efficiency, reducing harmful gas emissions, and enhancing the treatment effect of flue gas. Simultaneously, when the high-speed flue gas impacts the interior of the guide plate body 1 and strikes the drive fan 41, the drive fan 41 rotates under the influence of wind force. This causes the drive fan 41 to drive the scraper 46 to rotate 360 ​​degrees via the rotating shaft 45, effectively scraping away impurities and scale covering the surface of the guide plate body 1. This prevents impurities and scale from clogging the guide holes 2, ensuring the guide plate body 1 can perform normal flow guidance operations for extended periods. No external motor assembly is required. Using the upward impact of flue gas as power, impurities can be removed from the outer circumference of the guide plate body 1. By directly utilizing the existing flue gas power within the desulfurization tower, potentially wasted flue gas kinetic energy is effectively utilized, aligning with energy conservation and environmental protection principles and reducing the overall energy consumption of the desulfurization system. After the spray liquid reacts with the flue gas, it impacts the guide plate body 1 and can flow out through the guide holes 2, or slide into the collection channel 3 under gravity and enter the oxidation pool at the bottom of the desulfurization tower through the drain hole 32. Because the surface of the guide plate body 1 is arc-shaped, the arc surface... The surface allows scale and impurities to slide off more easily under gravity, making them less likely to accumulate on the surface of the guide plate. This reduces the risk of blockage caused by scale buildup, ensuring smooth gas-liquid flow inside the desulfurization tower and maintaining the normal operation of the desulfurization system. During routine cleaning and maintenance of the desulfurization tower, the impurities accumulated on the surface of the guide plate body 1 due to the rotation of the scraper 46 can be cleaned. When the scraper 46 is driven to rotate, the limiting block 47 on it is slidably set inside the limiting track 48, which can limit and guide the scraper 46 during movement, ensuring the stability of the scraper 46 during movement.

[0032] As a preferred embodiment, the guide plate body 1 is a hemispherical structure made of metal, and multiple sets of guide holes 2 are evenly opened on the outer circumference of the guide plate body 1.

[0033] The axial cross-section of the guide plate body 1 and the collection channel 3 is a concentric circle structure. The cross-section of the collection channel 3 is U-shaped. Multiple sets of equally spaced drainage holes 32 are evenly distributed at the bottom of the collection channel 3. The drainage holes 32 are rectangular.

[0034] In a preferred embodiment, the dust scraping mechanism 4 includes a drive fan 41, a bearing seat 42, a stabilizer 43, a receiving hole 44, a rotating shaft 45, a scraper 46, a limiting block 47, and a limiting track 48. The bearing seat 42 is installed on the outer circumference of the rotating shaft 45, and five sets of stabilizers 43 are evenly installed on the outer circumference of the bearing seat 42.

[0035] As a preferred embodiment, the five sets of stabilizers 43 are centrally symmetrical about the rotating shaft 45, the stabilizers 43 are arranged in a "V" shape, and the ends of the stabilizers 43 are screwed to the inner circumference of the guide plate body 1.

[0036] The scraper 46 is arc-shaped and is fixedly connected to the drive fan 41 via a rotating shaft 45. A brush plate with bristles is attached to the bottom inner wall of the scraper 46.

[0037] In a preferred embodiment, a limiting block 47 is fixedly provided on the inner circumference of the bottom of the scraper 46, and a limiting track 48 is provided on the outer circumference of the guide plate body 1. The size of the limiting track 48 is adapted to that of the limiting block 47, and the limiting block 47 is slidably disposed inside the limiting track 48.

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A flue gas inlet guide vane assembly, comprising a guide vane body (1), characterized in that: The bottom of the guide plate body (1) is fixedly connected to a flow collection channel (3). An installation baffle (31) is fixedly installed on the outer circumference of the flow collection channel (3). Multiple sets of installation holes are evenly opened on the installation baffle (31). The installation baffle (31) is screwed to the bottom circumferential side wall of the desulfurization tower through the multiple sets of installation holes. A dust scraping mechanism (4) is installed on the upper inner side of the guide plate body (1). A drive fan (41) is installed on the dust scraping mechanism (4). A rotating shaft (45) is fixed on the top of the drive fan (41). A scraper (46) is installed on the outer circumference of the end of the rotating shaft (45) away from the drive fan (41). The scraper (46) covers the outer circumferential side wall of the guide plate body (1).

2. The flue gas inlet guide vane assembly according to claim 1, characterized in that: The guide plate body (1) is a hemispherical structure made of metal, and multiple sets of guide holes (2) are evenly opened on the outer circumference of the guide plate body (1).

3. The flue gas inlet guide vane assembly according to claim 1, characterized in that: The axial cross-section of the guide plate body (1) and the collection channel (3) is a concentric circle structure. The cross-section of the collection channel (3) is U-shaped. Multiple sets of equally spaced drainage holes (32) are evenly opened at the bottom of the collection channel (3). The drainage holes (32) are rectangular.

4. The flue gas inlet guide vane assembly according to claim 1, characterized in that: The dust scraping mechanism (4) includes a drive fan (41), a bearing seat (42), a stabilizer (43), a receiving hole (44), a rotating shaft (45), a scraper (46), a limiting block (47), and a limiting track (48). The bearing seat (42) is installed on the outer circumference of the rotating shaft (45), and five sets of stabilizers (43) are evenly installed on the outer circumference of the bearing seat (42).

5. A flue gas inlet guide vane assembly according to claim 4, characterized in that: The five sets of stabilizers (43) are centrally symmetrical about the pivot (45). The stabilizers (43) are set in a "V" shape, and the ends of the stabilizers (43) are screwed to the inner circumference of the guide plate body (1).

6. The flue gas inlet guide vane assembly according to claim 4, characterized in that: The scraper (46) is arc-shaped and is fixedly connected to the drive fan (41) via a rotating shaft (45). A brush plate with bristles is attached to the bottom inner wall of the scraper (46).

7. A flue gas inlet guide vane assembly according to any one of claims 6 or 1, characterized in that: A limiting block (47) is fixedly installed on the bottom circumferential inner wall of the scraper (46), and a limiting track (48) is opened on the circumferential outer wall of the guide plate body (1). The size of the limiting track (48) is adapted to the size of the limiting block (47), and the limiting block (47) is slidably installed inside the limiting track (48).

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