SCR (Selective Catalytic Reduction) denitration equipment

Abstract

The utility model discloses SCR (Selective Catalytic Reduction) denitration equipment, which is applied to the field of environmental protection equipment and solves the technical problems that the stability of the denitration reaction process of the existing denitration equipment is not high and the reliable denitration efficiency cannot be guaranteed, the technical scheme is that the SCR denitration equipment comprises an equipment body, and the two ends of the equipment body are connected with an air inlet cavity and an air outlet cavity; the denitration device comprises a device body, a denitration assembly is arranged in the device body and comprises a temperature adjusting cavity, a reaction cavity and an auxiliary cavity which are sequentially arranged, the auxiliary cavity is formed in the middle of the device body, the temperature adjusting cavity is formed in the side close to the inner wall of the device body, the reaction cavity is formed between the temperature adjusting cavity and the auxiliary cavity, and an injection opening is formed in the bottom of the temperature adjusting cavity. A temperature adjusting cavity is formed in the reaction cavity, a discharging opening is formed in the top end of the temperature adjusting cavity, the reaction cavity is arranged in a circular ring shape, a catalyst flue block is arranged in the reaction cavity, a plurality of penetrating catalyst channels are formed in the catalyst flue block, and the technical effects that the reliability and stability of denitration treatment can be improved, and the denitration efficiency can be guaranteed are achieved.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment, and in particular to an SCR denitrification device. Background Technology

[0002] To achieve environmentally friendly purification of factory emissions, a denitrification process must be completed before the exhaust gas is emitted. This involves using catalyst reduction technology to treat emissions containing nitrogen oxides, thereby reducing environmental damage. Conventional heated SCR denitrification equipment often preheats the emissions in a hot air furnace before introducing them into the denitrification equipment flue containing catalyst blocks. The denitrification reaction in this equipment requires a high-temperature environment. Therefore, the emissions, after being heated in the hot air furnace, often meet the reaction temperature when they first enter the denitrification equipment. However, as the catalytic flue travels a long distance, the temperature at the denitrification equipment outlet differs significantly from the temperature at the inlet, failing to reach the required denitrification temperature. This often affects the denitrification effect, leading to incomplete denitrification. Furthermore, after prolonged operation, the catalyst flue of the denitrification equipment is prone to blockage, making manual cleaning and unblocking inconvenient, further reducing the reliability of the denitrification process. Utility Model Content

[0003] The purpose of this invention is to provide an SCR denitrification device, which has the advantages of improving the reliability and stability of denitrification treatment and ensuring denitrification efficiency.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an SCR denitrification device, comprising a device body, with an air inlet chamber and an air outlet chamber connected to both ends of the device body, and a denitrification assembly provided inside the device body, characterized in that: the denitrification assembly includes a temperature regulating chamber, a reaction chamber and an auxiliary chamber arranged sequentially, the auxiliary chamber being located in the middle of the device body, the temperature regulating chamber being located on one side near the inner wall of the device body, the reaction chamber being located between the temperature regulating chamber and the auxiliary chamber, and an injection port being provided at the bottom of the temperature regulating chamber. The temperature regulating chamber has an exhaust port at its top. The reaction chamber is circularly arranged and contains a catalyst flue block with multiple through-catalyst channels. The reaction chamber has flow guide holes at both ends. An auxiliary chamber hole is located on the side wall adjacent to the auxiliary chamber at the bottom of the reaction chamber. A throttling hole that mates with the auxiliary chamber hole is located on the side wall of the catalyst flue block. A one-way air intake valve is located in the auxiliary chamber hole. A pressure piston block is located in the auxiliary chamber hole. An air intake valve block is located at the top of the auxiliary chamber hole. A pneumatic rod drive block that drives the pressure piston block is located at the top of the equipment body. A pneumatic rod support is located between the pneumatic rod drive block and the pressure piston block.

[0005] Furthermore, the inner wall of the reaction chamber is provided with multiple spacer cavities, and the catalyst flue block is disposed in multiple spacer cavities.

[0006] Furthermore, the inner wall of the auxiliary cavity is provided with a pressure-resistant cavity wall.

[0007] Furthermore, the air inlet and outlet chambers are equipped with rectifiers.

[0008] Furthermore, the injection port and the discharge port are located on opposite sides of the temperature control chamber.

[0009] Furthermore, a temperature display block is provided on the outside of the device body.

[0010] In summary, this utility model has the following beneficial effects:

[0011] 1. By combining the internal temperature control chamber, reaction chamber, and auxiliary chamber of the equipment, the necessary environmental conditions for the purification process of the flue gas to be treated are achieved, ensuring a reliable catalytic effect. The reciprocating work of the pressure piston block in the auxiliary chamber can not only fully guarantee the ambient temperature for the contact reaction between the flue gas and the catalyst, but also achieve continuous impact and guidance of the catalyst flue duct holes, reducing the phenomenon of deposition and blockage that may occur during long-term catalytic reaction, and improving the stability, reliability, and efficiency of the overall denitrification process of the equipment. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view used to illustrate the structure of the denitrification equipment in the embodiments;

[0013] Figure 2 yes Figure 1 A magnified view of A in the middle.

[0014] Reference numerals in the attached drawings: 1. Equipment body; 2. Inlet chamber; 3. Outlet chamber; 4. Temperature control chamber; 5. Reaction chamber; 6. Auxiliary chamber; 7. Injection port; 8. Discharge port; 9. Catalyst flue block; 10. Guide hole; 11. Auxiliary chamber hole; 12. Throttling hole; 13. One-way inlet valve; 14. Pressure piston block; 15. Intake valve block; 16. Air rod drive block; 17. Air rod support rod; 18. Spacing chamber; 19. Rectifier plate; 20. Temperature display block. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings.

[0016] Example: An SCR denitrification device, such as Figure 1 and Figure 2 As shown, the device includes a main body 1, with an air inlet chamber 2 and an air outlet chamber 3 connected to both ends of the main body 1. The main body 1 is equipped with a denitrification component. The exhaust gas to be treated is input through the air inlet chamber 2, and after the catalytic denitrification reaction is completed by the denitrification component, it is discharged through the air outlet chamber 3 to achieve purified and compliant emissions.

[0017] The denitrification assembly includes a temperature-regulating chamber 4, a reaction chamber 5, and an auxiliary chamber 6 arranged sequentially. The auxiliary chamber 6 is located in the middle of the equipment body 1, the temperature-regulating chamber 4 is located near the inner wall of the equipment body 1, and the reaction chamber 5 is located between the temperature-regulating chamber 4 and the auxiliary chamber 6. These multiple independent chambers work collaboratively to form a reliable denitrification catalytic reaction system. An injection port 7 is located at the bottom of the temperature-regulating chamber 4, and an exhaust port 8 is located at the top. During operation, high-temperature steam or other heat sources are injected through the injection port 7. The temperature-regulating chamber 4 is designed to heat and maintain the temperature of one side of the reaction chamber 5. The injection port 7 and exhaust port 8 are located on opposite sides of the temperature-regulating chamber 4, ensuring sufficient and uniform heat preservation. After the heat source completes its thermal conversion, it is discharged through the exhaust port 8, forming an independent circulation channel. Furthermore, a temperature display block 20 is located on the outside of the equipment body 1, enabling users to observe and assess the internal working environment in real time and take immediate heating measures to ensure reliable high-temperature regulation of the catalytic reaction within the reaction chamber 5.

[0018] The reaction chamber 5 is arranged in a circular shape, and a catalyst flue block 9 is installed inside the reaction chamber 5. The catalyst flue block 9 has multiple through-catalyst channels to ensure that the flue gas to be treated, input from the inlet chamber 2, fully passes through the catalyst flue block 9 to complete the catalytic reduction reaction. Guide holes 10 are provided at both ends of the reaction chamber 5, and rectifier plates 19 are installed in the inlet chamber 2 and outlet chamber 3 to ensure that the flue gas entering the reaction chamber 5 maintains a uniform velocity and a perpendicular direction, improving the catalytic reaction efficiency and purification reliability. Since the catalyst flue block 9 will fail after long-term operation and needs to be replaced periodically, the inner wall of the reaction chamber 5 of this equipment has multiple partitioned chambers 18, and the catalyst flue block 9 is distributed in multiple partitioned chambers 18. This meets the operational needs of users for periodic partial maintenance and replacement, avoiding the waste that may result from directly replacing the entire catalyst block, and achieving full utilization of the catalyst flue block 9.

[0019] Considering the actual catalytic reaction process and the required temperature rise of the flue gas, an auxiliary chamber hole 11 is provided on the side wall adjacent to the auxiliary chamber 6 at the bottom of the reaction chamber 5. A throttling hole 12 that mates with the auxiliary chamber hole 11 is provided on the side wall of the catalyst flue block 9. A one-way inlet valve 13 is provided inside the auxiliary chamber hole 11. A pressure piston block 14 is provided inside the auxiliary chamber hole 11. An intake valve block 15 is provided at the top of the auxiliary chamber hole 11. A pneumatic rod drive block 16 that drives the pressure piston block 14 is provided at the top of the equipment body 1. A pneumatic rod 17 is provided between the pressure piston block 16 and the pressure piston block 14. The pneumatic rod drive block 16 drives the pressure piston block 14 to repeatedly compress. During the compression process, the compressed gas in the auxiliary chamber 11 heats up rapidly. When the pressure reaches the threshold of the one-way inlet valve 13, the high-temperature and high-pressure gas flow instantly enters the throttle hole 12 through the auxiliary chamber 11, mixes with the exhaust gas in the catalyst flue block 9, and heats up to ensure that the exhaust gas in the reaction chamber 5 reaches the specified catalytic reaction temperature. At the same time, the intermittently injected high-temperature and high-pressure gas flow can continuously impact the flue holes in the catalyst flue block 9, reducing the possibility of long-term accumulation and blockage of the internal flue. After the compression process is completed, the one-way inlet valve 13 closes quickly as the pressure drops instantaneously, preventing backflow. At the same time, the intake valve block 15 opens, allowing the pressure piston block 14 to start the intake process, and so on. To ensure the long-term reliable operation of the equipment, the inner wall of the auxiliary chamber 6 is provided with a pressure-resistant chamber wall, which ensures the stable and reliable reciprocating operation of the pressure piston block 14 and also ensures continuous and reliable intervention in the catalytic reaction process in the reaction chamber 5, so as to improve the overall stability and reliability of the denitrification equipment.

[0020] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. An SCR denitration device, comprising a device body (1), an air inlet cavity (2) and an air outlet cavity (3) connected to both ends of the device body (1), and a denitration assembly arranged in the device body (1), characterized in that: The said depleting assembly comprises a temperature-adjusting cavity (4), a reaction cavity (5) and an auxiliary cavity (6) arranged in sequence, the auxiliary cavity (6) is arranged at the middle part of the equipment body (1), the temperature-adjusting cavity (4) is arranged at the side close to the inner wall of the equipment body (1), the reaction cavity (5) is arranged between the temperature-adjusting cavity (4) and the auxiliary cavity (6), the bottom of the temperature-adjusting cavity (4) is provided with an injection port (7), the top end of the temperature-adjusting cavity (4) is provided with a discharge port (8), the reaction cavity (5) is arranged in a circular ring shape, the reaction cavity (5) is provided with a catalyst flue block (9), the catalyst flue block (9) is provided with a plurality of through catalyst channels, the two ends of the reaction cavity (5) are provided with flow guide through holes (10), the side wall of the reaction cavity (5) adjacent to the auxiliary cavity (6) at the bottom is provided with an auxiliary cavity hole (11), the side wall of the catalyst flue block (9) is provided with a throttle hole (12) matched with the auxiliary cavity hole (11), the auxiliary cavity hole (11) is provided with a one-way air inlet valve (13), the auxiliary cavity hole (11) is provided with a pressure piston block (14), the top end of the auxiliary cavity hole (11) is provided with an air suction valve block (15), the top end of the equipment body (1) is provided with a gas rod driving block (16) driving the movement of the pressure piston block (14), the gas rod driving block (16) and the pressure piston block (14) are provided with a gas rod supporting rod (17) therebetween.

2. The SCR de-NOx apparatus according to claim 1, characterized by: The inner wall of the reaction cavity (5) is provided with a plurality of interval cavities (18), and the catalyst flue block (9) is arranged in the plurality of interval cavities (18).

3. The SCR deNOx apparatus according to claim 1, characterized by: The inner wall of the auxiliary cavity (6) is provided with a pressure-resistant cavity wall.

4. The SCR deNOx apparatus according to claim 1, characterized by: The air inlet cavity (2) and the air outlet cavity (3) are provided with a flow straightener (19).

5. The SCR deNOx apparatus according to claim 1, characterized by: The injection port (7) and the discharge port (8) are arranged on the two sides of the temperature-adjusting cavity (4).

6. The SCR deNOx apparatus according to claim 1, characterized by: The outside of the equipment body (1) is provided with a temperature display block (20).

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