Energy-saving low-temperature SCR denitration system

Abstract

The utility model relates to an energy -saving low temperature SCR denitration system belongs to flue gas denitration technical field. The energy -saving low temperature SCR denitration system, include: treatment box and set up in its one side and intercommunication's denitration box, cleaning assembly, the cleaning assembly sets up in denitration box, wherein, cleaning assembly includes setting up in the push rod of treatment box and the cleaning cover that contacts with denitration box inner wall, through setting up push rod, movable plate, bracing plate and bracing rod, can conveniently length of cleaning cover of staff debugging, make cleaning cover can completely cover the inside section of denitration box, improve the cleaning effect to flue gas residue, promote the efficiency and quality of flue gas treatment, through the V -shaped debugging of two bracing rods, can open and form the angle of inclination with the lower end of cleaning cover, make driving rod when driving cleaning cover rotation, can guide the residue scraped down from top to bottom and concentrate, so as to discharge together.

Description

Technical Field

[0001] This utility model relates to the field of flue gas denitrification technology, and in particular to an energy-saving low-temperature SCR denitrification system. Background Technology

[0002] Flue gas denitrification refers to the process of removing nitrogen oxides from industrial flue gas through technical means. It is mainly used in coal-fired power plants, steel, chemical and other industries to reduce air pollution. Common methods include selective catalytic reduction and selective non-catalytic reduction.

[0003] Referring to the case "A Low-Temperature SCR Flue Gas Denitrification Device" (publication number CN213556354U), this utility model discloses a low-temperature SCR flue gas denitrification device, relating to the field of flue gas denitrification technology. This low-temperature SCR flue gas denitrification device includes an installation platform, with a connecting plate welded to the top outer surface of the platform. This utility model can accelerate the flue gas flow rate and the oxidation-reduction reaction rate. The activated carbon filter plate acts as a carrier for the catalyst, catalyzing the reaction and accelerating the reaction rate, indirectly increasing the denitrification rate. Furthermore, it can absorb and treat the remaining ammonia after the reaction, preventing ammonia pollution from entering the next stage of the process with the denitrified flue gas. The brushes clean the inner wall of the denitrification chamber, preventing dust from adhering to the flue gas. The small amount of water formed by the reaction of NOx and ammonia in the flue gas adheres to the inner wall of the denitrification chamber, making it difficult to clean the residue flowing down after denitrification, thus providing a good environment for the next reaction.

[0004] Although the flue gas denitrification device is equipped with brushes to scrape off the residue on the inner wall of the denitrification chamber, the limited range of the brushes means they cannot completely cover the internal cross-section of the denitrification chamber. As a result, some residue may remain in the denitrification chamber, which in turn affects the denitrification efficiency and quality. Utility Model Content

[0005] Therefore, it is necessary to provide an energy-saving low-temperature SCR denitrification system to address the problem that the brushes installed in the above-mentioned flue gas denitrification devices cannot completely clean the residues in the denitrification box, which easily leads to residues and affects the denitrification quality.

[0006] An energy-saving low-temperature SCR denitrification system, characterized in that it includes: a processing tank and a denitrification tank disposed on one side of the processing tank and interconnected with it; A cleaning component is disposed in the denitrification chamber; The cleaning components include a push rod installed in the treatment chamber and a cleaning sleeve that contacts the inner wall of the denitrification chamber.

[0007] In one embodiment, the cleaning assembly further includes a movable plate disposed at the telescopic end of the push rod. The upper and lower ends of the movable plate are respectively movably connected to a support plate and a support rod via a pivot. The cleaning sleeve is fitted between the surfaces of the support plate and the support rod. By setting the movable plate, support plate, and support rod, the length of the cleaning sleeve can be easily adjusted by the staff, so that the cleaning sleeve can completely cover the internal cross section of the denitrification box, thereby improving the cleaning effect on flue gas residues and enhancing the efficiency and quality of flue gas treatment.

[0008] In one embodiment, two support rods are provided, and the two support rods are designed in a V shape. The upper end of the support rod is movably connected to the movable plate through a pivot. With the above design, the lower end of the cleaning sleeve can be opened and form an inclination angle, so that when the drive rod drives the cleaning sleeve to rotate, the scraped residue can be guided from top to bottom and concentrated for discharge together.

[0009] In one embodiment, a spring is fixedly connected between the opposite sides of the two struts. The spring is a retractable design, which can be used to reset the two struts and reduce the included angle.

[0010] In one embodiment, the side of the cleaning sleeve and the side near the inner wall of the denitrification box are respectively provided with a guide groove and a scraper. The side of the scraper near the inner wall of the denitrification box is in contact with the inner wall of the denitrification box. By providing the guide groove, after the cleaning sleeve scrapes off the residue, the residue can enter the lower part of the denitrification box along the guide groove for collection. By providing the scraper, the cleaning sleeve can be used to improve the scraping effect on the residue on the inner wall of the denitrification box.

[0011] In one embodiment, sliding holes are respectively provided above and below the surface of the movable plate, and a sliding rod is horizontally slidably connected in the sliding holes of the movable plate. By setting the sliding rod, the movable plate can be horizontally limited, thereby improving the running stability of the movable plate when it is adjusted by the push rod.

[0012] In one embodiment, a motor is fixedly connected to the top of the denitrification box, the output end of the motor extends into the denitrification box and is fixedly connected to a drive rod, the push rod and the slide rod are both fixed to the surface of the drive rod, and catalyst plates are provided above and below the surface of the drive rod.

[0013] Beneficial effects 1. By setting push rods, movable plates, support plates and support rods, the length of the cleaning sleeve can be easily adjusted by the staff, so that the cleaning sleeve can completely cover the internal cross section of the denitrification box, improve the cleaning effect of flue gas residue, and improve the efficiency and quality of flue gas treatment; 2. By adjusting the two support rods into a V-shape, the lower end of the cleaning sleeve can be opened and tilted, so that when the drive rod drives the cleaning sleeve to rotate, the scraped residue can be guided from top to bottom and concentrated for discharge. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the denitrification box of this utility model; Figure 3 This is a partial structural diagram of the cleaning component of this utility model; Figure 4 This is a schematic diagram of one side and the other side of the cleaning sleeve of this utility model.

[0016] Figure label: 1. Processing box; 2. Denitrification box; 3. Motor; 4. Drive rod; 5. Cleaning assembly; 501. Push rod; 502. Slide rod; 503. Movable plate; 504. Support plate; 505. Support rod; 506. Spring; 507. Cleaning sleeve; 508. Guide groove; 509. Scraper. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0022] The following is combined Figures 1-4 This invention describes an energy-saving low-temperature SCR denitrification system.

[0023] In one embodiment, an energy-saving low-temperature SCR denitrification system includes: a processing tank 1 and a denitrification tank 2 disposed on one side of the processing tank and connected to it. Cleaning component 5, which is disposed in denitrification box 2; like Figure 2 , Figure 3 and Figure 4As shown, the cleaning assembly 5 includes a push rod 501 disposed in the processing box 1 and a cleaning sleeve 507 in contact with the inner wall of the denitrification box 2; the cleaning assembly 5 also includes a movable plate 503 disposed at the telescopic end of the push rod 501, the upper end and lower end of the movable plate 503 are respectively movably connected to a support plate 504 and a support rod 505 via a pivot, and the cleaning sleeve 507 is sleeved between the surfaces of the support plate 504 and the support rod 505; there are two support rods 505, the two support rods 505 are V-shaped, and the upper end of the support rod 505 is movably connected to the movable plate 503 via a pivot; a spring 506 is fixedly connected between the opposite sides of the two support rods 505, the spring 506 is a retractable design; the side of the cleaning sleeve 507 and the side near the inner wall of the denitrification box 2 are respectively provided with a guide groove 508 and a scraper 509, the side of the scraper 509 near the inner wall of the denitrification box 2 is in contact with the inner wall of the denitrification box 2; First, the staff opens the push rod 501. The telescopic end of the push rod 501 pushes the movable plate 503 towards the inner wall of the denitrification box 2. At this time, the support rod 505 and the support plate 504 are pressed and the tilt angle increases. The height of the cleaning sleeve 507 will be stretched. When the support rod 505 is squeezed, the two support rods 505 will expand outward in a V shape. At this time, the lower end of the cleaning sleeve 507 will be opened. The cleaning sleeve 507 expands from top to bottom. Then, the motor 3 drives the cleaning component 5 to rotate through the drive rod 4. The height of the cleaning sleeve 507 is consistent with the height of the internal cross section of the denitrification box 2. Therefore, it can completely scrape off the residue inside the denitrification box 2. When the cleaning sleeve 507 scrapes off the residue on the inner wall of the denitrification box 2, the residue will be concentrated downward along the inclined surface of the cleaning sleeve 507. It should be noted that: such as Figure 3 As shown, a movable block is set at the lower end of the movable plate 503 via a rotating shaft along the X-axis. The front and rear sides below the movable block are respectively connected to the support rod 505 via rotating shafts along the Y-axis. Therefore, when the movable plate 503 is pushed into the inner wall of the denitrification box 2, the inclination angle between the support rod 505 and the movable plate 503 and the inclination angle between the two support rods 505 change simultaneously. The movable plate 503 has sliding holes on its upper and lower surfaces, and a sliding rod 502 is horizontally slidably connected in the sliding holes of the movable plate 503. A motor 3 is fixedly connected to the top of the denitrification box 2. The output end of the motor 3 passes through the denitrification box 2 and is fixedly connected to a drive rod 4. The push rod 501 and the slide rod 502 are both fixed to the surface of the drive rod 4. Catalyst plates are provided above and below the surface of the drive rod 4. In the energy-saving low-temperature SCR denitrification system, the treatment chamber 1 first removes large particulate dust from the flue gas through a cyclone dust collector to prevent subsequent catalyst blockage or wear. Then, the flue gas enters the ammonia injection grid area, where ammonia is evenly injected into the flue gas through a matrix of nozzles, ensuring thorough mixing with the flue gas and a uniform NH3 / NOx molar ratio. After dust removal and ammonia injection, the flue gas enters the denitrification chamber 2, where it passes through two layers of catalyst (the upper layer, V2O5-WO3 / TiO2, is used for the main reaction, while the lower layer, Fe-ZSM-5 molecular sieve, enhances the low-temperature denitrification efficiency). Ultimately, NOx is reduced to N2 and H2O on the catalyst surface.

[0024] Working principle: In actual use, the operator first opens the push rod 501. The telescopic end of the push rod 501 pushes the movable plate 503 towards the inner wall of the denitrification box 2. At this time, the support rod 505 and the support plate 504 are pressed and the inclination angle increases, and the height of the cleaning sleeve 507 will be stretched. When the support rod 505 is squeezed, the two support rods 505 will expand outward in a V shape. At this time, the lower end of the cleaning sleeve 507 will be opened. The cleaning sleeve 507 expands from top to bottom. Then, the motor 3 drives the cleaning component 5 to rotate through the drive rod 4. The height of the cleaning sleeve 507 is consistent with the height of the internal cross section of the denitrification box 2. Therefore, it can completely scrape off the residue inside the denitrification box 2. When the cleaning sleeve 507 scrapes off the residue on the inner wall of the denitrification box 2, the residue will be concentrated downward along the inclined surface of the cleaning sleeve 507, which can effectively reduce the residue during flue gas denitrification and improve the efficiency and quality of flue gas denitrification.

[0025] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0026] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. An energy-saving low-temperature SCR denitrification system, characterized in that, include: The treatment box (1) and the denitrification box (2) located on one side of it and connected to each other; Cleaning component (5), which is disposed in denitrification box (2); The cleaning component (5) includes a push rod (501) disposed in the treatment box (1) and a cleaning sleeve (507) that contacts the inner wall of the denitrification box (2).

2. The energy-saving low-temperature SCR denitrification system according to claim 1, characterized in that, The cleaning assembly (5) also includes a movable plate (503) disposed at the telescopic end of the push rod (501). The upper and lower ends of the movable plate (503) are respectively movably connected to a support plate (504) and a support rod (505) via a rotating shaft. The cleaning sleeve (507) is sleeved between the surfaces of the support plate (504) and the support rod (505).

3. The energy-saving low-temperature SCR denitrification system according to claim 2, characterized in that, There are two support rods (505), which are designed in a V-shape. The upper end of the support rod (505) is movably connected to the movable plate (503) through a pivot.

4. The energy-saving low-temperature SCR denitrification system according to claim 1, characterized in that, A spring (506) is fixedly connected between the two support rods (505) on opposite sides, and the spring (506) is of a retractable design.

5. The energy-saving low-temperature SCR denitrification system according to claim 1, characterized in that, The side of the cleaning sleeve (507) and the side near the inner wall of the denitrification box (2) are respectively provided with guide groove (508) and scraper (509). The side of the scraper (509) near the inner wall of the denitrification box (2) is in contact with the inner wall of the denitrification box (2).

6. The energy-saving low-temperature SCR denitrification system according to claim 3, characterized in that, The movable plate (503) has sliding holes on its upper and lower surfaces, and a sliding rod (502) is horizontally slidably connected in the sliding holes of the movable plate (503).

7. The energy-saving low-temperature SCR denitrification system according to claim 1, characterized in that, A motor (3) is fixedly connected to the top of the denitrification box (2). The output end of the motor (3) passes through the denitrification box (2) and is fixedly connected to a drive rod (4). The push rod (501) and the slide rod (502) are both fixed to the surface of the drive rod (4). Catalyst plates are provided above and below the surface of the drive rod (4).

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