A compartmented SCR denitration device

Abstract

The utility model relates to SCR denitration device technical field, and the present application discloses a kind of warehouse type SCR denitration device, including denitration tower main part, the inside of denitration tower main part is equipped with spray denitration structure, denitration tower main part one side upper portion is equipped with flue gas outlet, the side away from flue gas outlet of denitration tower main part is provided with dust removal warehouse, the utility model is by being arranged dust removal warehouse in the gas inlet end of denitration tower main part, and by communicating pipe, denitration tower main part and dust removal warehouse are communicated, when flue gas enters inside dust removal warehouse in advance, flue gas is filtered dust after passing through dust removal plate and flows into the inside of denitration tower main part, simultaneously by control cylinder drives dust removal plate to move upwards, and clean scraper removes dust on dust removal plate, solve the problem that a large amount of dust, heavy metal and other particulate matters contained in flue gas seriously interfere with the efficient reaction of nitrogen oxides and reducing agent, thereby significantly affect the overall denitration efficiency and stability problem.

Description

Technical Field

[0001] This utility model application relates to the technical field of SCR denitrification devices, specifically a compartment-type SCR denitrification device. Background Technology

[0002] SCR (Selective Catalytic Reduction) denitrification system is a highly efficient post-treatment technology for controlling nitrogen oxide emissions. Its core principle is that, under the action of a catalyst, a reducing agent selectively reacts with NOx in the flue gas to reduce it into harmless nitrogen and water. The system mainly consists of a reducing agent injection system, a catalytic reactor, and a control system. It is widely used in stationary sources such as coal-fired power plants and industrial boilers, and can effectively reduce NOx emissions. It is a key piece of equipment for meeting stringent environmental standards and preventing photochemical smog and acid rain.

[0003] Current SCR denitrification units directly input flue gas into the denitrification tower for treatment. However, untreated flue gas often contains a large amount of dust, heavy metals and other particulate matter. When this dust enters the catalytic reaction zone with the flue gas, it competes with the reducing agent for active sites on the catalyst surface. This not only shields the catalyst, causing it to passivate and deactivate, but may also block the catalyst pores, increasing system resistance. This seriously interferes with the efficient reaction between nitrogen oxides and the reducing agent, thus significantly affecting the overall denitrification efficiency and stability, and increasing operation and maintenance costs. Summary of the Invention

[0004] To address the problem that a large amount of dust, heavy metals, and other particulate matter in flue gas severely interferes with the efficient reaction between nitrogen oxides and reducing agents, thereby significantly affecting the overall denitrification efficiency and stability, this invention provides a compartmentalized SCR denitrification device to solve the aforementioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A compartmentalized SCR denitrification device includes a denitrification tower body with a spray denitrification structure inside. A flue gas outlet is located on the upper side of one side of the denitrification tower body. A dust collection chamber is located on the side of the denitrification tower body away from the flue gas outlet, connected to the denitrification tower body via a connecting pipe. A flue gas inlet pipe is located at the end of the dust collection chamber away from the denitrification tower body. A dust collection plate is slidably installed inside the dust collection chamber near the connecting pipe, with a filter screen fixed inside the dust collection plate. A sealing baffle is fixed at the bottom of the dust collection plate, and a first connecting plate is fixed on the top surface of the dust collection plate. Control cylinders are fixed at both ends of the dust collection chamber, and the output ends of the two control cylinders are fixedly connected to both ends of the first connecting plate. A cleaning scraper is fixed to the top surface inside the dust collection chamber, and the cleaning scraper adheres to the dust collection plate.

[0006] Furthermore, a collection plate is slidably arranged on the bottom surface inside the dust removal chamber, and a groove with the shape of the collection plate is formed on one side of the dust removal chamber. A second connecting plate is arranged inside the groove of the dust removal chamber. One end of the second connecting plate is fixedly connected to the collection plate, and the second connecting plate is fixedly connected to the dust removal chamber by fixing bolts.

[0007] Furthermore, the dust removal plate is L-shaped, and the sealing baffle is attached to the inner wall of the dust removal chamber near the end of the connecting pipe.

[0008] Furthermore, both the connecting pipe and the smoke inlet pipe are composed of several connecting pipes, and each connecting pipe is equipped with an electric valve.

[0009] Furthermore, one end of the collecting plate is located below the smoke inlet pipe, and the top surface of the other end of the collecting plate is in contact with the sealing baffle.

[0010] Furthermore, the second connecting plate is L-shaped, and the height of one end of the second connecting plate is the same as the height of the collecting plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, a dust removal chamber is set at the air inlet end of the denitrification tower body, and the denitrification tower body and the dust removal chamber are connected by a connecting pipe. When the flue gas enters the dust removal chamber in advance, the flue gas flows into the denitrification tower body after being filtered by the dust removal plate. At the same time, the dust removal plate is moved upward by the control cylinder, and the cleaning scraper removes the dust on the dust removal plate. This solves the problem that a large amount of dust, heavy metals and other particulate matter contained in the flue gas seriously interferes with the efficient reaction between nitrogen oxides and reducing agents, thus significantly affecting the overall denitrification efficiency and stability.

[0012] 2. In this utility model, by setting a collection plate at the bottom of the dust removal chamber, the dust falling off the dust removal plate falls onto the collection plate. Then, a sliding groove that matches the shape of the collection plate is started on the side of the dust removal chamber. Then, by pulling out the second connecting plate, the collection plate is brought out from the inside of the dust removal chamber for cleaning, so as to avoid the accumulation of too much dust inside the dust removal chamber, which would affect the dust removal effect of the dust removal plate. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural schematic diagram according to an embodiment of the present application; Figure 2yes Figure 1 A three-dimensional schematic diagram of the back-end structure in the embodiment shown; Figure 3 yes Figure 1 The embodiment shown is a three-dimensional schematic diagram of the dust removal component structure; Figure 4 yes Figure 1 The illustrated embodiment is a three-dimensional structural diagram of the cleaning component.

[0015] The meanings of the reference numerals in the diagram are as follows: 1. Main body of the denitrification tower; 2. Exhaust port; 3. Dust collection chamber; 4. Connecting pipe; 5. Inlet pipe; 6. Electric valve; 7. Dust collection plate; 8. Filter screen; 9. Sealing baffle; 10. First connecting plate; 11. Control cylinder; 12. Cleaning scraper; 13. Collection plate; 14. Second connecting plate; 15. Fixing bolt. Detailed Implementation

[0016] To make the purpose, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A compartmentalized SCR denitrification device includes a denitrification tower body 1, with a spray denitrification structure inside. A flue gas outlet 2 is located on one side of the denitrification tower body 1. A dust collection chamber 3 is located on the side of the denitrification tower body 1 away from the flue gas outlet 2. The dust collection chamber 3 is connected to the denitrification tower body 1 via a connecting pipe 4. A flue gas inlet pipe 5 is located at the end of the dust collection chamber 3 away from the denitrification tower body 1. A dust collection plate 7 is slidably installed inside the dust collection chamber 3 near the connecting pipe 4. A filter screen 8 is fixed inside the dust collection plate 7. A sealing baffle 9 is fixed at the bottom of the dust collection plate 7. A first connecting plate 10 is fixed on the top surface of the dust collection plate 7. Control cylinders 11 are fixed at both ends of the dust collection chamber 3, and their output ends are fixedly connected to both ends of the first connecting plate 10. A cleaning scraper 12 is fixed on the top surface inside the dust collection chamber 3, and the cleaning scraper 12 adheres to the dust collection plate 7. Flue gas passes through the dust collection chamber 3 to filter dust.

[0018] Specifically, the dust removal plate 7 is L-shaped, and the sealing baffle 9 is attached to the inner wall of the dust removal chamber 3 near the end of the connecting pipe 4. Both the connecting pipe 4 and the smoke inlet pipe 5 are composed of several connecting pipes, and each connecting pipe is equipped with an electric valve 6 to facilitate the adjustment of the flow rate of the flue gas.

[0019] As an optimization solution, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a collection plate 13 is slidably installed on the bottom surface inside the dust collection chamber 3. A groove with the shape of the collection plate 13 is provided on one side of the dust collection chamber 3. A second connecting plate 14 is installed inside the groove of the dust collection chamber 3. One end of the second connecting plate 14 is fixedly connected to the collection plate 13. The second connecting plate 14 is fixedly connected to the dust collection chamber 3 by fixing bolts 15, which facilitates the recycling of dust.

[0020] Specifically, one end of the collecting plate 13 is located below the smoke inlet pipe 5, and the top surface of the other end of the collecting plate 13 is in contact with the sealing baffle 9. The second connecting plate 14 is L-shaped, and the height of one end of the second connecting plate 14 is the same as the height of the collecting plate 13, which facilitates the fixing and limiting of the collecting plate 13.

[0021] Working principle: When dusty flue gas enters the dust collection chamber 3 through the inlet pipe 5, passes through the dust collection plate 7, and enters the denitrification tower body 1 through the connecting pipe 4, the filter screen 8 filters and intercepts the dust particles in the flue gas. The filtered flue gas enters the denitrification tower body 1 and is treated by the spray denitrification structure inside the denitrification tower body 1 before being discharged through the exhaust port 2. When a large amount of dust accumulates on the filter screen 8, the control cylinder 11 is activated. The output end of the control cylinder 11 drives the first connecting plate 10 to move upward, and the first connecting plate 10 simultaneously drives the dust collection plate 7 to move upward. At this time, the filter screen 8 removes dust particles from the dust collection plate 7. The dust adhering to the surface is scraped off, and the vibration caused by the collision between the dust removal plate 7 and the dust removal chamber 3 also shakes off the dust at the bottom of the dust removal plate 7. When the dust removal plate 7 moves upward, it drives the sealing baffle 9 to move upward. At this time, the sealing baffle 9 seals the smoke outlet of the dust removal chamber 3 to prevent dust from flowing out. The scraped-off dust falls into the collection plate 13. Then, the fixing bolt 15 is opened to release the fixing between the second connecting plate 14 and the dust removal chamber 3. The second connecting plate 14 can be pulled out to bring out the collection plate 13. The staff then pours the dust inside the collection plate 13 into a pre-prepared dust bag for subsequent processing.

[0022] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalent elements of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A compartmentalized SCR denitrification device, comprising a denitrification tower body (1), wherein the denitrification tower body (1) is provided with a spray denitrification structure inside, characterized in that: A flue gas outlet (2) is provided on one side of the main body (1) of the denitrification tower. A dust removal chamber (3) is provided on the side of the main body (1) away from the flue gas outlet (2). The dust removal chamber (3) is connected to the main body (1) of the denitrification tower through a connecting pipe (4). A flue gas inlet pipe (5) is provided at the end of the dust removal chamber (3) away from the main body (1). A dust removal plate (7) is slidably provided inside the dust removal chamber (3) near the end of the connecting pipe (4). A filter screen (8) is fixed inside the dust removal plate (7). A sealing baffle (9) is fixed at the bottom end of the dust removal plate (7). A first connecting plate (10) is fixed on the top surface of the dust removal plate (7). Control cylinders (11) are fixed at both ends of the dust removal chamber (3). The output ends of the two control cylinders (11) are fixedly connected to both ends of the first connecting plate (10). A cleaning scraper (12) is fixed on the top surface inside the dust removal chamber (3). The cleaning scraper (12) is attached to the dust removal plate (7).

2. The compartmentalized SCR denitrification device according to claim 1, characterized in that: The dust removal chamber (3) has a collection plate (13) slidably arranged on the bottom surface inside. The dust removal chamber (3) has a groove on one side that matches the shape of the collection plate (13). A second connecting plate (14) is arranged inside the groove of the dust removal chamber (3). One end of the second connecting plate (14) is fixedly connected to the collection plate (13). The second connecting plate (14) is fixedly connected to the dust removal chamber (3) by fixing bolts (15).

3. The compartmented SCR denitrification device according to claim 1, characterized in that: The dust removal plate (7) is L-shaped, and the sealing baffle (9) is attached to the inner wall of the dust removal chamber (3) near the end of the connecting pipe (4).

4. The compartmented SCR denitrification device according to claim 1, characterized in that: Both the connecting pipe (4) and the smoke inlet pipe (5) are composed of several connecting pipes, and each of the connecting pipes is equipped with an electric valve (6).

5. A compartmentalized SCR denitrification device according to claim 2, characterized in that: One end of the collecting plate (13) is located below the smoke inlet pipe (5), and the top surface of the other end of the collecting plate (13) is in contact with the sealing baffle (9).

6. A compartmentalized SCR denitrification device according to claim 2, characterized in that: The second connecting plate (14) is L-shaped, and the height of one end of the second connecting plate (14) is the same as the height of the collecting plate (13).

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