Flue gas denitration equipment capable of adjusting flow

Abstract

The utility model discloses flue gas denitration equipment capable of adjusting flow, which comprises a denitration tower, a flue gas inlet pipe and a flue, the flue gas inlet pipe is inserted at the bottom end of the side wall surface of the denitration tower, the flue is arranged on the outer side of the flue gas inlet pipe, a shell is inserted between the flue and the flue gas inlet pipe, a gas transmission component is fixed on the inner side of the shell, and the gas transmission component is fixed on the outer side of the shell. A plurality of spray heads are inserted into one side wall of the air conveying assembly, an air bag is fixed to the inner wall of the shell, and a sealing part is arranged in the position, on the right side, of the shell; by means of the uniquely-designed gas conveying assembly, the gas conveying assembly is connected with an external air compressor, high-pressure gas can be conveyed to the spray head and the gas bag, the spray head is an adjustable fan-shaped spray head, sprayed gas flow can be distributed in a fan shape by changing the shape of an internal flow channel or the angle of an outlet, convection is formed between the sprayed gas flow and entering flue gas, and the flue gas flow is effectively reduced; high-pressure gas enters the air bag made of rubber to expand the air bag, and the smoke passing space is reduced.

Description

Technical Field

[0001] This utility model relates to the field of flue gas denitrification, specifically a flue gas denitrification device with adjustable flow rate. Background Technology

[0002] In modern industrial production processes, the flue gas produced by burning large amounts of fossil fuels contains pollutants such as nitrogen oxides, which pose serious threats to the environment and human health. To reduce the emission of such pollutants, flue gas denitrification equipment has become a key piece of equipment in the industrial waste gas treatment process.

[0003] Existing flue gas denitrification equipment faces many problems in actual operation. On the one hand, traditional adjustment methods often cannot achieve precise and efficient control of the flue gas flow rate entering the denitrification tower. Most flow adjustment devices have simple structures and cannot flexibly cope with complex and ever-changing production conditions. For example, it is difficult to change the flue gas flow rate instantly to match the equipment load changes. Although some adjustment devices can adjust the flow rate, the adjustment method is single and cannot intervene in the flue gas from multiple dimensions at the same time, resulting in poor flow adjustment effect and affecting denitrification efficiency.

[0004] On the other hand, when it is necessary to stop flue gas from entering the denitrification tower, the sealing measures of traditional equipment have obvious defects. The sealing structure of some equipment has poor sealing performance, which can easily cause flue gas leakage. This not only reduces the working efficiency of the denitrification equipment, but may also cause untreated pollutants to escape into the environment, causing secondary pollution. Moreover, traditional sealing devices are complicated to operate and cannot quickly respond to emergency shutdown needs in the production process, increasing the risk and cost of equipment operation. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a flue gas denitrification device with adjustable flow rate.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a flue gas denitrification device with adjustable flow rate, including a denitrification tower, a flue gas inlet pipe and a flue. The flue gas inlet pipe is inserted into the bottom end of the side wall of the denitrification tower. A flue is provided on the outside of the flue gas inlet pipe. A shell is inserted between the flue and the flue gas inlet pipe. A gas conveying component is also fixed on the inside of the shell. Multiple nozzles are inserted into one side wall of the gas conveying component. An air bladder is fixed on the inner wall of the shell. A sealing component is provided inside the right side of the shell.

[0007] Furthermore, the gas delivery assembly includes a gas delivery pipe, which is fixed between the outer shells. A high-pressure gas delivery pipe is inserted into the outer wall of the gas delivery pipe. The interior of the gas delivery pipe is hollow to form an air duct, and the air duct is connected to the nozzle and the air bag respectively.

[0008] Furthermore, the nozzle is an adjustable fan-shaped nozzle, which can make the ejected airflow distributed in a fan shape by changing the shape of the flow channel inside the nozzle or the outlet angle.

[0009] Furthermore, the enclosure includes a baffle cover, which is symmetrically fixed to the outer wall of the right side of the outer shell. A baffle is slidably connected inside the baffle cover, and one side wall of the baffle cover is connected to a high-pressure gas delivery pipe through a connecting pipe.

[0010] Furthermore, a strip-shaped slot with the same width as the baffle is provided at the connection between the outer shell and the baffle cover on the right side, and the edge of the baffle is tightly fitted to the strip-shaped slot and the inner wall of the outer shell respectively, and the baffle extends through the strip-shaped slot into the interior of the outer shell.

[0011] Furthermore, a sealing plate is fixed on the inner end face of the baffle.

[0012] The beneficial effects of this utility model are:

[0013] High-efficiency flow regulation: Through a uniquely designed gas delivery component, connected to an external air compressor, high-pressure gas can be delivered to the nozzle and air bag. The nozzle adopts an adjustable fan-shaped nozzle, which can make the ejected airflow distributed in a fan shape by changing the shape of the internal flow channel or the outlet angle, forming convection with the incoming flue gas and effectively reducing the flue gas flow. At the same time, the high-pressure gas enters the rubber air bag and expands it, reducing the space for flue gas to pass through. The two work together to achieve precise and efficient flue gas flow regulation, meeting the flue gas flow control requirements under different working conditions.

[0014] Flexible sealing function: The sealing components can flexibly control the entry of flue gas into the denitrification tower. When it is necessary to stop the entry of flue gas, the connecting pipe valve is opened, and high-pressure gas enters the baffle cover from the high-pressure gas delivery pipe through the connecting pipe, pushing the baffle out from inside the baffle cover and making the sealing plate on the inner side of the baffle fit together, thus effectively sealing the outer shell and preventing flue gas from entering the denitrification tower. When the sealing is canceled, air is extracted by the air compressor, and the baffle is retracted into the baffle cover. The operation is simple and can quickly respond to the control requirements of flue gas on and off during the production process.

[0015] The structure is reasonable and well-sealed: the gas pipeline is fixed between the outer shells, and gaskets are installed at the connection points to ensure the sealing of high-pressure gas during transportation, reduce the risk of gas leakage, and improve the stability of equipment operation. A strip-shaped slot with the same width as the baffle is provided at the connection between the right outer shell and the baffle cover. The edge of the baffle fits tightly against the strip-shaped slot and the inner wall of the outer shell, ensuring the sealing and stability of the closure during opening and closing, avoiding flue gas leakage problems caused by poor sealing, and improving the overall performance of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention.

[0017] Figure 2 yes Figure 1 Detailed cross-sectional view of the inner shell connecting the structure.

[0018] Figure 3 yes Figure 2 Detailed cross-sectional view of the connection structure between the gas pipeline and the nozzle on the right.

[0019] Figure 4 yes Figure 2 Detailed cross-sectional view of the connection structure between the middle baffle cover and the baffle.

[0020] Explanation of reference numerals in the attached diagram: 1. Denitrification tower, 2. Exhaust pipe, 3. Flue gas inlet pipe, 4. Flue, 5. Outer shell, 6. Gas transmission pipeline, 7. High-pressure gas transmission pipe, 8. Airbag, 9. Nozzle, 10. Baffle cover, 11. Baffle, 12. Connecting pipe. Detailed Implementation

[0021] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0022] See Figures 1-4 This is a schematic diagram of the structure of this utility model, a flue gas denitrification device with adjustable flow rate, including a denitrification tower 1, a flue pipe 2, a flue gas inlet pipe 3, and a flue 4. The top of the denitrification tower 1 is connected to the flue pipe 2. The denitrification tower 1 is used to provide space for flue gas denitrification. The denitrified flue gas is discharged through the flue pipe 2. The bottom of the side wall of the denitrification tower 1 is connected to the flue gas inlet pipe 3. The flue 4 is provided on the outside of the flue gas inlet pipe 3. The flue 4 cooperates with the flue gas inlet pipe 3 to enter the interior of the denitrification tower 1 for denitrification.

[0023] A housing 5 is inserted between the flue duct 4 and the flue gas inlet pipe 3. The two housings 5 ​​are combined to form a flue gas flow regulation space. A gas delivery component is also fixed inside the housing 5. The gas delivery component is connected to an external air compressor. The air compressor delivers high-pressure gas to the nozzle 9 and the air bag 8 through the gas delivery component. The nozzle 9 is an adjustable fan-shaped nozzle. By changing the flow channel shape or outlet angle inside the nozzle, the ejected airflow is distributed in a fan shape. The high-pressure gas is ejected through the nozzle 9 and forms convection with the flue gas to reduce the flue gas flow. Multiple nozzles 9 are inserted on one side wall of the gas delivery component. An air bag 8 is fixed to the inner wall of the housing 5. The air bag 8 is made of rubber. When the high-pressure gas enters the air bag 8, the air bag expands, reducing the space for the flue gas to pass through. This, together with the high-pressure gas ejected from the nozzle 9, regulates the flue gas flow. A sealing component is installed inside the right housing 5 to seal the housing 5 and prevent the flue gas from entering the interior of the denitrification tower 1.

[0024] The gas delivery assembly includes a gas delivery pipe 6, which is fixed between the outer shells 5. Gaskets are provided at the connection points. A high-pressure gas delivery pipe 7 is inserted into the outer wall of the gas delivery pipe 6. The high-pressure gas delivery pipe 7 is connected to an air compressor. The air compressor delivers high-pressure gas through the high-pressure gas delivery pipe 7 into the air duct of the gas delivery pipe 6. The interior of the gas delivery pipe 6 is hollow to form an air duct, which is connected to the nozzle 9 and the air bag 8 respectively. High-pressure gas is delivered to the nozzle 9 and the air bag 8 through the air duct, and the flow rate is regulated.

[0025] The sealing component includes a baffle cover 10, which is symmetrically fixed to the outer wall of the right-side outer casing 5. A baffle 11 is slidably connected inside the baffle cover 10. An inflation space is provided at the top of the inside of the baffle cover 10. High-pressure gas enters the baffle cover 10 through a connecting pipe 12, and the high-pressure gas pushes the baffle 11 out of the inside of the baffle cover 10. A sealing plate is fixed on the inner end face of the baffle 11, so that the two baffles 11 fit together to perform the sealing function. One side wall of the baffle cover 10 is connected to the high-pressure gas through the connecting pipe 12. The delivery pipe 7 is connected, and a valve is provided on the connecting pipe 12. When it is necessary to cancel the seal, the air compressor is used to pump air and shrink the baffle 11 into the baffle cover 10 through vacuum to cancel the seal. When the seal is not needed, the valve on the connecting pipe 12 is closed. The connection between the right outer shell 5 and the baffle cover 10 is provided with a strip groove with the same width as the baffle 11, and the edge of the baffle 11 is tightly fitted to the strip groove and the inner wall of the outer shell 5 respectively. The baffle 11 extends through the strip groove into the interior of the outer shell 5.

[0026] When using this utility model:

[0027] The flue gas requiring denitrification enters the outer casing 5 through flue 4, and then enters the denitrification tower 1 through the outer casing 5 and flue gas inlet pipe 3 for denitrification. The denitrified flue gas is discharged through exhaust pipe 2. When it is necessary to adjust the flue gas flow rate, the air compressor connected to the high-pressure gas delivery pipe 7 is started. When the air compressor starts working, it delivers high-pressure gas through the high-pressure gas delivery pipe 7 to the air duct inside the gas delivery pipeline 6. The gas then enters the nozzles 9 and the air bag 8 through the air duct. The fan-shaped gas ejected from the nozzles 9 forms a convection with the flue gas entering from the flue 4, while simultaneously... Pressurized gas enters the airbag 8, which then inflates. This inflates the airbag 8, reducing the space for the flue gas to pass through the outer shell 5. This, in conjunction with the nozzle 9, regulates the flow of flue gas. To stop the flue gas from entering, the valve on the connecting pipe 12 is opened. After opening, the high-pressure gas inside the water pipe 7 enters the baffle cover 10 through the connecting pipe 12, pushing the baffle 11 out of the baffle cover 10 and causing it to adhere. Once adhered, the sealing operation can be performed. To cancel the seal, the baffle 11 is retracted into the baffle cover 10 by evacuating the air, thus canceling the sealing operation.

Claims

1. A flue gas denitration device capable of adjusting flow, comprising a denitration tower (1), a flue gas inlet pipe (3) and a flue (4), the side wall surface bottom end of the denitration tower (1) is inserted with the flue gas inlet pipe (3), the outer side of the flue gas inlet pipe (3) is provided with the flue (4), characterized in that, The flue (4) and the flue gas inlet pipe (3) are connected with the shell (5), the inner side of the shell (5) is fixed with the gas delivery assembly, one side wall of the gas delivery assembly is connected with a plurality of spray heads (9), the inner wall of the shell (5) is fixed with the air bag (8), and the right side of the shell (5) is provided with a closure.

2. The flue gas denitration device with adjustable flow according to claim 1, characterized in that: The gas delivery assembly comprises a gas delivery pipeline (6), the gas delivery pipeline (6) is fixed between the shells (5), the outer wall of the gas delivery pipeline (6) is connected with the high-pressure gas delivery pipe (7), the inside of the gas delivery pipeline (6) is hollow to form an air duct, and the air duct is connected with the spray head (9) and the air bag (8) respectively.

3. The flue gas denitration device with adjustable flow according to claim 1, characterized in that: The spray head (9) is an adjustable fan-shaped spray head, the gas flow is distributed in a fan shape by changing the flow channel shape or the outlet angle in the spray head.

4. The flue gas denitration device with adjustable flow according to claim 1, characterized in that: The closure comprises a baffle cover (10), the baffle cover (10) is symmetrically fixed on the outer wall of the right shell (5), the inside of the baffle cover (10) is slidably connected with the baffle (11), and one side wall of the baffle cover (10) is connected with the high-pressure gas delivery pipe (7) through the connecting pipe (12).

5. The flue gas denitration device capable of adjusting flow according to claim 4, characterized in that: The connection between the right shell (5) and the baffle cover (10) is provided with a strip-shaped slot with the same width as the baffle (11), the edges of the baffle (11) are tightly attached to the strip-shaped slot and the inner wall of the shell (5) respectively, and the baffle (11) extends to the inside of the shell (5) through the strip-shaped slot.

6. The flue gas denitration device capable of adjusting flow according to claim 4, characterized in that: The inner side end face of the baffle (11) is fixed with a sealing plate.

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