Inertia settling chamber of semi-dry desulfurization and denitrification composite device

Abstract

The utility model discloses an inertia settling chamber of a semi-dry desulfurization and denitrification composite device, which belongs to the technical field of mechanical dust removal equipment and comprises a purification component and a detection component, and the exhaust end of the purification component is provided with an exhaust pipe and is connected with the detection component through the exhaust pipe; the purification assembly comprises a tank body, an aeration dust collection structure and an air inlet pipe, and the aeration dust collection structure is located at the bottom of the tank body; the detection assembly comprises a detector and a pipeline switching structure, the pipeline switching structure is connected with a backflow pipe communicating with the gas inlet pipe, a tail gas discharging pipe used for discharging tail gas and an exhaust pipe, and the communicating state of the exhaust pipe, the backflow pipe and the tail gas discharging pipe can be changed through the pipeline switching structure. According to the inertial settling chamber of the semi-dry desulfurization and denitrification composite device, the detection assembly is arranged, so that when the inertial settling chamber is used, purified tail gas passes through the detection assembly, and the situation that more harmful gas is discharged when the purity of a mixed solution is not enough is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of mechanical dust removal equipment, and in particular relates to an inertial settling chamber of a semi-dry desulfurization and denitrification composite device. Background Technology

[0002] As the name suggests, the inertial settling chamber of the semi-dry desulfurization and denitrification combined device is a dust removal inertial settling chamber used in the semi-dry desulfurization and denitrification combined device for tail gas treatment. Although the existing inertial settling chambers of the semi-dry desulfurization and denitrification combined device are very common in modern life, they still have drawbacks in actual use.

[0003] Existing publicly available literature, CN214106297U, discloses an inertial settling chamber for a semi-dry desulfurization and denitrification composite device. It discloses a desulfurization chamber, a circulation component, and a dust removal component. An air inlet pipe is fixedly connected to the top inner wall of the desulfurization chamber, a water-absorbing layer is fixedly installed on the inner wall of the chamber, and an air delivery pipe is fixedly installed on the right inner wall of the chamber. An air outlet pipe is fixedly installed on the top right back of the support frame. When the desulfurized gas enters the desulfurization chamber, the circulation pump is turned on to start operation, causing the desulfurizing agent to chemically react with the gas and absorb SO2 gas from the flue gas, completing the desulfurization operation. After the desulfurized gas enters the settling chamber, the motor is started to rotate, generating wind pressure that causes dust to enter the water source, ensuring that the wind pressure will not disperse the dust. Finally, the settled gas is discharged through the air outlet connected to the air outlet, thus effectively filtering impurities in the desulfurized gas.

[0004] Because the use of desulfurizing agents can reduce the effective concentration, the treated gas is directly discharged. When the concentration of desulfurizing agents is insufficient to complete the desulfurization operation of SO2 gas, harmful gases that have not been removed will remain in the gas, failing to meet emission requirements. Direct discharge will cause environmental pollution.

[0005] To address these issues, we propose an inertial settling chamber for a semi-dry desulfurization and denitrification composite device. Utility Model Content

[0006] The purpose of this invention is to solve the problems of easy clogging of atomizing nozzles and lack of detection of exhaust gas in existing inertial settling chambers, and to propose an inertial settling chamber for a semi-dry desulfurization and denitrification composite device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An inertial settling chamber for a semi-dry desulfurization and denitrification composite device includes a purification component and a detection component. The exhaust end of the purification component is provided with an exhaust pipe and is connected to the detection component through the exhaust pipe.

[0009] The purification component includes a tank, an aeration and dust collection structure, and an air inlet pipe. The aeration and dust collection structure is located at the bottom of the tank, and the air inlet pipe is located below the tank and connected to the aeration and dust collection structure.

[0010] The detection component includes a detector and a pipeline switching structure. The pipeline switching structure is connected to a return pipe that communicates with the intake pipe, an exhaust pipe for exhaust gas emission, and an exhaust pipe. The pipeline switching structure can change the connection state between the exhaust pipe and the return pipe and the exhaust pipe.

[0011] Preferably, the aeration dust collection structure includes:

[0012] An installation pipe is fixedly installed at the bottom of the tank. The installation pipe is a through structure, and a slag discharge pipe with a valve is installed at the bottom of the installation pipe.

[0013] A connecting pipe is rotatably and sealed inside the installation pipe to connect the tank body and the slag discharge pipe. There is a receiving cavity between the connecting pipe and the installation pipe. The air inlet pipe is fixed to the outer wall of the installation pipe and communicates with the receiving cavity.

[0014] A drive motor is fixedly installed on the outer wall of the tank, and the drive motor is connected to the connecting pipe via a belt drive system.

[0015] Multiple dust collection strips are fixedly installed on the top of the connecting pipe. The dust collection strips are attached to the bottom of the tank body, and multiple nozzles are installed on the outer wall of the dust collection strips. The nozzles are connected to the receiving cavity through an air passage.

[0016] Preferably, the dust collection bar is arc-shaped, the nozzle is installed on the convex surface of the dust collection bar, and the concave surface of the dust collection bar is provided with a scraping groove with a small angle.

[0017] Preferably, the belt drive system includes pulleys fixedly mounted on the output end of the drive motor and the outer wall of the connecting pipe, and the two pulleys are connected by belt drive.

[0018] Preferably, the tank body is provided with a plurality of inclined buffer plates, the high end of each buffer plate is provided with a curved portion, the plurality of buffer plates are provided in multiple layers, and the buffer plates of adjacent layers are installed in opposite directions and are staggered.

[0019] Preferably, the pipeline switching structure includes a sealing cylinder, inside which a switching column with an L-shaped flow channel is rotatably and sealed, and outside the sealing cylinder a servo motor connected to the switching column is fixedly installed.

[0020] Preferably, the detector includes a sulfur dioxide sensor and a nitric acid gas sensor, which are electrically connected to a servo motor.

[0021] In summary, the technical effects and advantages of this utility model are as follows:

[0022] 1. This utility model, by setting up a purification component, allows the emitted exhaust gas to come into contact with the mixed solution in the tank during use. The drive motor drives the dust collection bar to rotate, causing the nozzles to continuously change positions in the mixed solution to aerate the gas, ensuring more thorough contact with the mixed solution and carrying out desulfurization and denitrification processes. At the same time, the mixed solution can also adsorb dust in the gas, making the emitted gas cleaner. The rotation of the dust collection bar creates a vortex in the mixed solution, which gathers the dust suspended in the mixed solution towards the center and collects it in the slag discharge pipe. Simultaneously, the dust collection bar also gathers and collects dust adhering to the inner wall of the bottom of the tank towards the center, ensuring effective collection.

[0023] 2. This utility model, by setting up a detection component, allows purified exhaust gas to pass through the detection component during use. When the detection component detects the presence of sulfur- or nitrate-containing gases in the gas, it controls the servo motor to rotate, driving the switching column to rotate and changing the connection state between the exhaust pipe, return pipe, and exhaust gas pipe to return the gas. It also reminds the operator to replace the mixed solution, thus preventing the discharge of excessive harmful gases when the purity of the mixed solution is insufficient. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0026] Figure 3 This is a schematic diagram of the dust collection bar in this utility model;

[0027] Figure 4 for Figure 2 A magnified structural diagram of part A in the middle;

[0028] Figure 5 for Figure 2 A magnified structural diagram of part B in the middle section;

[0029] Figure 6 This is a schematic diagram of the buffering principle structure of the buffer plate in this utility model.

[0030] In the diagram: 1. Purification component; 11. Tank; 12. Aeration and dust collection structure; 121. Mounting pipe; 122. Connecting pipe; 123. Drive motor; 124. Dust collection bar; 125. Receiving cavity; 126. Nozzle; 13. Inlet pipe; 14. Exhaust pipe; 15. Buffer plate; 2. Detection component; 21. Detector; 211. Nitric acid gas sensor; 212. Sulfur dioxide sensor; 22. Pipeline switching structure; 221. Sealing cylinder; 222. Switching column; 223. Servo motor; 3. Exhaust gas pipe; 4. Return pipe. Detailed Implementation

[0031] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0032] Reference Figure 1-5 An inertial settling chamber for a semi-dry desulfurization and denitrification composite device includes a purification component 1 and a detection component 2. The exhaust end of the purification component 1 is provided with an exhaust pipe 14 and is connected to the detection component 2. After the exhaust gas is desulfurized and denitrified by the purification component 1, the dust in the exhaust gas is collected. Finally, the exhaust gas is discharged after being detected by the detection component 2. This can improve the dust collection effect and avoid the direct discharge of excessive exhaust gas into polluted air after the concentration of the mixed absorbent liquid is reduced.

[0033] The purification component 1 includes a tank 11, an aeration and dust collection structure 12, and an air inlet pipe 13. The aeration and dust collection structure 12 is located at the bottom of the tank 11. The tank 11 is filled with a mixed absorbent liquid, and the liquid level of the mixed absorbent liquid is above the aeration and dust collection structure 12. The air inlet pipe 13 is located below the tank 11 and is connected to the aeration and dust collection structure 12. An air pump is installed on the air inlet pipe 13. The air pump pressurizes the exhaust gas and inputs it into the tank 11 through the air inlet pipe 13. The aeration and dust collection structure 12 disperses and aerates the exhaust gas in the mixed absorbent liquid, so that the sulfur-containing or nitrate-containing gases in the exhaust gas are absorbed by the mixed absorbent liquid. During the aeration process, the dust in the exhaust gas is directly dissolved in the mixed absorbent liquid, thereby achieving the adsorption and collection of dust.

[0034] Reference Figure 1-4 The aeration dust collection structure 12 includes an installation pipe 121, a connecting pipe 122, a drive motor 123, and multiple dust collection bars 124.

[0035] The installation pipe 121 is fixedly installed at the bottom of the tank 11. The installation pipe 121 is a through structure, and a slag discharge pipe with a valve is installed at the bottom of the installation pipe 121.

[0036] The connecting pipe 122 is rotatably and sealed inside the mounting pipe 121 to connect the tank 11 and the slag discharge pipe. The connecting pipe 122 can rotate, and the rotation of the connecting pipe 122 does not affect the sealing between the connecting pipe 122 and the mounting pipe 121. There is a receiving cavity 125 between the connecting pipe 122 and the mounting pipe 121. The air inlet pipe 13 is fixed to the outer wall of the mounting pipe 121 and communicates with the receiving cavity 125. The receiving cavity 125 is used for the intake of exhaust gas. The exhaust gas is first input into the receiving cavity 125. When the connecting pipe 122 rotates, it does not affect the input of exhaust gas into the receiving cavity 125 by the fixed-position air inlet pipe 13.

[0037] The drive motor 123 is fixedly installed on the outer wall of the tank 11. The drive motor 123 is connected to the connecting pipe 122 through a belt drive system. The power for the rotation of the connecting pipe 122 comes from the drive motor 123. After the drive motor 123 starts, it drives the connecting pipe 122 to rotate continuously.

[0038] Multiple dust collection strips 124 are fixedly installed on the top of the connecting pipe 122. When the connecting pipe 122 rotates, it drives the multiple dust collection strips 124 to rotate synchronously. The bottom of the tank body 11 is conical, and the dust collection strips 124 are in contact with the bottom of the tank body 11. Multiple nozzles 126 are installed on the outer wall of the dust collection strips 124. The nozzles 126 are connected to the receiving cavity 125 through an air passage. The exhaust gas in the receiving cavity 125 is output to the mixed absorption liquid in the tank body 11 through the nozzles 126. The exhaust gas is sprayed outward from the nozzles 126 and mixed absorption liquid is absorbed. The liquid creates an aeration effect, improving the absorption of waste gas by the mixed absorbent. At the same time, the nozzles 126 are dispersed to form multiple aeration points, and the nozzles 126 rotate synchronously with the dust collection bar 124, so the aeration position changes continuously, which is conducive to the thorough purification of waste gas. Meanwhile, the mixed solution can also adsorb dust in the gas, making the emitted gas cleaner. The rotation of the dust collection bar 124 will cause the mixed solution to generate a vortex, which will gather the dust suspended in the mixed solution towards the center and collect it in the slag discharge pipe.

[0039] The dust collection bar 124 is arc-shaped, and the nozzle 126 is installed on the convex surface of the dust collection bar 124. The concave surface of the dust collection bar 124 has a scraping groove with a small angle. The rotation direction of the dust collection bar 124 is towards the concave surface. The scraping groove on the dust collection bar 124 will gather and collect the dust adhering to the inner wall of the bottom of the tank 11 towards the center, ensuring the collection effect.

[0040] The belt drive system includes pulleys fixedly mounted on the output end of the drive motor 123 and the outer wall of the connecting pipe 122. The two pulleys are connected by a belt drive. The rotation of the drive motor 123 drives the pulleys to rotate, which in turn drives the connecting pipe 122 to rotate.

[0041] Reference Figure 1-5The detection component 2 includes a detector 21 and a pipeline switching structure 22. The pipeline switching structure 22 is connected to a return pipe 4 connected to the inlet pipe 13, an exhaust pipe 3 for exhaust gas discharge, and an exhaust pipe 14. The pipeline switching structure 22 can change the connection state between the exhaust pipe 14, the return pipe 4, and the exhaust pipe 3. Under normal conditions, the exhaust pipe 14 is connected to the exhaust pipe 3. After the waste gas treated by adsorption passes the detector 21, it is discharged through the exhaust pipe 3. When the detector 21 detects that the waste gas does not meet the standard, the pipeline switching structure 22 switches the connection between the exhaust pipe 14 and the return pipe 4, closes the valve at the far end of the inlet pipe 13, and the air pump directly pumps the gas that has returned. The waste gas returns to the inlet pipe 13 through the return pipe 4 and enters the tank 11 again for adsorption. If the state of continuous adsorption is maintained for a long time, the concentration of the mixed absorbent solution will be too low and the mixed absorbent solution needs to be replaced.

[0042] The mixed absorbent is discharged through the slag discharge pipe. During the discharge process, the dust and sludge collected in the slag discharge pipe are washed away. A replenishment pipe is installed on the tank 11 for adding new mixed absorbent.

[0043] Reference Figure 1-6 The tank 11 is equipped with multiple inclined buffer plates 15. The high end of the buffer plate 15 is provided with a curved section. The multiple buffer plates 15 are arranged in multiple layers. The buffer plates 15 of adjacent layers are installed in opposite directions and are staggered. After being absorbed, the exhaust gas rises during the aeration process. When passing through the buffer plate 15, it is guided by the buffer plate 15. When passing through the curved section, the direction changes to form a downward airflow, causing the residual dust area in the exhaust gas to sink and finally fall on the upper layer of the mixed absorption liquid, thus achieving secondary dust collection.

[0044] The pipeline switching structure 22 includes a sealing cylinder 221. Inside the sealing cylinder 221, a switching column 222 with an L-shaped flow channel is rotatably sealed. Outside the sealing cylinder 221, a servo motor 223 connected to the switching column 222 is fixedly installed. The L-shaped flow channel has two openings. By controlling the rotation of the switching column 222 through the servo motor 223, the opening position of the L-shaped flow channel can be changed, thereby switching the connection state between the exhaust pipe 14 and the return pipe 4 and the tail gas exhaust pipe 3.

[0045] The detector 21 contains a sulfur dioxide sensor 212 and a nitric acid gas sensor 211. The sulfur dioxide sensor 212 and the nitric acid gas sensor 211 are electrically connected to the servo motor 223. The nitric acid gas sensor 211 and the sulfur dioxide sensor 212 will detect the gas. The control of the servo motor 223 by the nitric acid gas sensor 211 and the sulfur dioxide sensor 212 is indirect. A suitable controller is needed to convert the detection signals of the nitric acid gas sensor 211 and the sulfur dioxide sensor 212. This part is the prior art and will not be described in detail here.

[0046] Working principle:

[0047] The exhaust gas is pressurized by an air pump and input into the tank 11 through the air inlet pipe 13. The exhaust gas first enters the receiving cavity 125, and then is output from the nozzle 126 into the mixed absorption liquid in the tank 11. The exhaust gas sprayed out from the nozzle 126 creates an aeration effect in the mixed absorption liquid, improving the absorption of the exhaust gas by the mixed absorption liquid. At the same time, the nozzles 126 are distributed to form multiple aeration points. The drive motor 123 rotates, driving the pulley to rotate, which in turn drives the connecting pipe 122 to rotate via belt drive. When the connecting pipe 122 rotates, it drives multiple dust collection bars 1 The nozzles 126 and 124 rotate synchronously, and the aeration position changes continuously, which is conducive to the thorough purification of the exhaust gas. At the same time, the mixed solution can also adsorb the dust in the gas, making the emitted gas cleaner. The rotation of the dust collection bar 124 will cause the mixed solution to generate a vortex, which will gather the dust suspended in the mixed solution towards the center and collect it in the slag discharge pipe. The rotation direction of the dust collection bar 124 is towards the concave side, and the scraper groove on the dust collection bar 124 will gather the dust attached to the inner wall of the bottom of the tank 11 towards the center to ensure the collection effect.

[0048] After being absorbed, the exhaust gas rises during the aeration process. When it passes through the buffer plate 15, it is guided by the buffer plate 15. When it passes through the bend, it changes direction and forms a downward airflow, causing the residual dust in the exhaust gas to sink and finally fall onto the upper layer of the mixed absorption liquid, thus achieving secondary dust collection.

[0049] After the waste gas undergoes adsorption treatment and passes the detector 21, it is discharged through the tail gas pipe 3. When the detector 21 detects that the waste gas does not meet the standard, the servo motor 223 controls the switching column 222 to rotate, changing the opening position of the L-shaped flow channel, thereby switching the connection state between the exhaust pipe 14, the return pipe 4, and the tail gas pipe 3, so that the exhaust pipe 14 is connected to the return pipe 4, and the waste gas flows back into the inlet pipe 13 through the return pipe 4, and enters the tank 11 again for adsorption. If the state of continuous adsorption is maintained for a long time, the concentration of the mixed absorbent solution with the edge will be too low, and the mixed absorbent solution needs to be replaced.

Claims

1. An inertial settling chamber for a semi-dry desulfurization and denitrification composite device, comprising a purification component (1) and a detection component (2), characterized in that: The exhaust end of the purification component (1) is provided with an exhaust pipe (14) and is connected to the detection component (2) through the exhaust pipe (14); The purification component (1) includes a tank (11), an aeration and dust collection structure (12), and an air inlet pipe (13). The aeration and dust collection structure (12) is located at the bottom of the tank (11), and the air inlet pipe (13) is located below the tank (11) and connected to the aeration and dust collection structure (12). The detection component (2) includes a detector (21) and a pipe switching structure (22). The pipe switching structure (22) is connected to a return pipe (4) that is connected to the intake pipe (13), an exhaust pipe (3) for exhaust gas emission, and an exhaust pipe (14). The connection state between the exhaust pipe (14) and the return pipe (4) and the exhaust pipe (3) can be changed through the pipe switching structure (22).

2. The inertial settling chamber of a semi-dry desulfurization and denitrification composite device according to claim 1, characterized in that, The aeration dust collection structure (12) includes: The installation pipe (121) is fixedly installed at the bottom of the tank body (11). The installation pipe (121) is a through structure. A slag discharge pipe with a valve is installed at the bottom of the installation pipe (121). A connecting pipe (122) is rotatably and sealed inside the mounting pipe (121) for connecting the tank body (11) and the slag discharge pipe. There is a receiving cavity (125) between the connecting pipe (122) and the mounting pipe (121). The air inlet pipe (13) is fixed on the outer wall of the mounting pipe (121) and communicates with the receiving cavity (125). The drive motor (123) is fixedly installed on the outer wall of the tank (11), and the drive motor (123) is connected to the connecting pipe (122) through a belt drive system; Multiple dust collection strips (124) are fixedly installed on the top of the connecting pipe (122). The dust collection strips (124) are attached to the bottom of the tank (11), and multiple nozzles (126) are installed on the outer wall of the dust collection strips (124). The nozzles (126) are connected to the receiving cavity (125) through an air passage.

3. The inertial settling chamber of a semi-dry desulfurization and denitrification composite device according to claim 2, characterized in that, The dust collection bar (124) is arc-shaped, the nozzle (126) is installed on the convex surface of the dust collection bar (124), and the concave surface of the dust collection bar (124) is provided with a scraping groove with a small angle.

4. The inertial settling chamber of a semi-dry desulfurization and denitrification combined device according to claim 2, characterized in that, The belt drive system includes pulleys fixedly mounted on the output end of the drive motor (123) and the outer wall of the connecting pipe (122), and the two pulleys are connected by belt drive.

5. The inertial settling chamber of a semi-dry desulfurization and denitrification composite device according to claim 1, characterized in that, The tank (11) is provided with multiple inclined buffer plates (15), the high end of the buffer plate (15) is provided with a curved part, the multiple buffer plates (15) are provided with multiple layers, and the buffer plates (15) of adjacent layers are installed in opposite directions and are staggered.

6. The inertial settling chamber of a semi-dry desulfurization and denitrification combined device according to claim 1, characterized in that, The pipeline switching structure (22) includes a sealing cylinder (221), and a switching column (222) with an L-shaped flow channel is rotatably sealed inside the sealing cylinder (221). A servo motor (223) connected to the switching column (222) is fixedly installed outside the sealing cylinder (221).

7. The inertial settling chamber of a semi-dry desulfurization and denitrification composite device according to claim 6, characterized in that, The detector (21) includes a sulfur dioxide sensor (212) and a nitric acid gas sensor (211), which are electrically connected to a servo motor (223).

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