Dust and sulfur containing flue gas cleaning device

Abstract

The utility model relates to the field of flue gas treatment especially relates to dust containing sulfur flue gas purification device, including purification tank body, still including stirring tank, the inside fixed mounting of purification tank body has the baffle, the inboard fixed mounting of baffle has the filter tube, the upper side fixed mounting of purification tank body inside has the connecting rod, the lower end fixed mounting of connecting rod has electric telescopic handle, the output fixed mounting of electric telescopic handle has distribution pipe, distribution pipe lower end fixed mounting has clean gas nozzle, the utility model discloses through adjusting distribution pipe makes clean gas nozzle moves up and down, moves back and forth on the inner surface of filter tube, and it is convenient to approach each position of filter tube, utilizes the air nozzle cover lower end to open and has the air hole, and the surface is provided with the air hole of central symmetry, and it is convenient to drive air nozzle cover rotation while jet cleaning, and the cleaning orientation of automatic adjustment cleaning mechanism is adjusted, and each position of filter tube can be cleaned evenly in the process of adjusting, and the uniformity of filter tube inner surface cleaning intensity is further guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment, and in particular to a device for purifying dust- and sulfur-containing flue gas. Background Technology

[0002] Dust- and sulfur-containing flue gas purification refers to the process of removing particulate matter and sulfur oxides from flue gas through a series of technical means to meet environmental standards. It utilizes treatment technologies to eliminate particulate matter and sulfur oxides from flue gas, thereby controlling emissions and improving air quality. Its main purpose is to reduce the content of these pollutants, ensuring that the purified flue gas meets emission standards. Dust- and sulfur-containing flue gas purification is widely used in various industrial fields, especially in equipment such as incinerators, coal-fired boilers, and brick kilns. These devices generate large amounts of flue gas containing particulate matter and sulfur oxides during operation. Direct emission without purification would cause serious harm to the environment and human health. Purification effectively reduces the concentration of pollutants in the flue gas, protects human health, and meets environmental regulations.

[0003] For example, patent number (CN203108426U) discloses a dust and sulfur-containing flue gas purification device, including a venturi tube. A first lime water nozzle is circumferentially located at the throat of the venturi tube. The bottom of the venturi tube is connected to a flue gas dust removal filter via an elbow. A second lime water nozzle is located at the elbow. The flue gas dust removal filter includes a tank connected to the venturi tube. A partition is provided inside the tank, dividing the tank into a filter chamber and an exhaust chamber. A filter tube is located inside the filter chamber. A cleaning tube for blowing air is correspondingly located above the filter tube. An air outlet is located above the tank, and a sewage outlet is located below the tank. This utility model has a simple structure, reasonable design, is suitable for high-temperature flue gas, and has good dust and sulfur removal and purification effects.

[0004] Currently, dust and sulfur-containing flue gas purification devices typically require regular cleaning of the filter structure during use. However, the cleaning mechanism has certain limitations. The cleaning mechanism is in a fixed position, and the filter structure tube is relatively long, which can easily lead to insufficient uniformity of cleaning force on the surface of the filter structure, further affecting the cleaning effect on the more distant and side parts of the filter structure.

[0005] Therefore, to address the above problems, an adjustable cleaning mechanism for purifying dust- and sulfur-containing flue gas can be designed. Utility Model Content

[0006] To overcome the problem that the cleaning mechanism of the dust and sulfur-containing flue gas purification device is fixed in position and the filter structure tube is long, which easily leads to insufficient uniformity of cleaning force and further affects the cleaning effect on some parts of the filter structure.

[0007] The technical solution of this utility model is as follows: a dust and sulfur-containing flue gas purification device, including a purification tank and a mixing tank. A partition is fixedly installed inside the purification tank, and a filter tube is fixedly installed on the inner side of the partition. A connecting rod is fixedly installed on the upper side inside the purification tank, and an electric telescopic rod is fixedly installed at the lower end of the connecting rod. A distribution pipe is fixedly installed at the output end of the electric telescopic rod, and a cleaning nozzle is fixedly installed at the lower end of the distribution pipe. A nozzle sleeve is provided on the surface of the cleaning nozzle. A venturi tube is fixedly connected to the surface of the purification tank, and a lime water nozzle is fixedly installed on the venturi tube. A material conveying assembly is provided on the surface of the mixing tank. A drive motor is fixedly installed at the upper end of the mixing tank. A drive shaft is fixedly installed inside the mixing tank at the output end of the drive motor. A stirring rod and anti-settling blades are fixedly installed on the surface of the drive shaft. A feeding port is provided at the upper end of the mixing tank, next to the drive motor.

[0008] Preferably, the flue gas enters the venturi tube, which concentrates coarse particles. Ash water is sprayed through the nozzles to wash the flue gas, causing sulfur dioxide to form calcium sulfate, thus achieving flue gas desulfurization and purification. After desulfurization and purification, the remaining flue gas, calcium sulfate particles, and dust enter the filter chamber inside the tank. Impurities are retained outside the filter tube and settle at the drain port. Clean gas is discharged into the air through the exhaust port. When the outer surface of the filter tube is covered with dust and filtration is ineffective, the air blowing system connected to the external cleaning air pipe can be activated to clean the filter tube and blow impurities to the drain port. A control valve can be connected to the drain port; opening the drain port allows impurities to be discharged, and closing it allows the gas to re-enter the filter for purification.

[0009] Preferably, the electric telescopic rod is used to drive the distribution pipe to move up and down and slide, and the surface of the cleaning nozzle is rotatably connected to the nozzle sleeve.

[0010] Preferably, an external cleaning air pipe is fixedly connected to the side of the upper end of the purification tank, and the lower end of the external cleaning air pipe extends into the interior of the purification tank and is fixedly installed with a connecting hose.

[0011] Preferably, the end of the connecting hose away from the external cleaning air pipe is connected to the distribution pipe, the filter pipes are evenly spaced, the cleaning nozzles are compatible with the filter pipes, the upper end of the purification tank is provided with an air outlet, and the lower end of the purification tank is provided with a drain outlet.

[0012] Preferably, the conveying assembly includes a conveying pipe with a conveying pump installed on it. One end of the conveying pipe is connected to the mixing tank, and the other end is connected to the lime water nozzle.

[0013] Preferably, the drive motor is used to drive the transmission shaft to rotate, the output end of the drive motor is rotatably connected to the mixing tank, and the lower end of the transmission shaft is rotatably connected to the mixing tank.

[0014] Preferably, the stirring rods are evenly spaced, and the anti-sedimentation blades are designed with a spiral structure.

[0015] The beneficial effects of this utility model are:

[0016] 1. This dust and sulfur-containing flue gas purification device allows the cleaning nozzle to move up and down by adjusting the distribution pipe, and to move back and forth on the inner surface of the filter tube, making it easy to access various positions of the filter tube. The nozzle sleeve has air holes at the lower end and symmetrical air holes on the surface, which facilitates the rotation of the nozzle sleeve while cleaning with air jets, automatically adjusting the cleaning position of the cleaning mechanism. During the adjustment process, it can evenly clean various positions of the filter tube, further ensuring the uniformity of the cleaning force on the inner surface of the filter tube, which is beneficial to improving the cleaning effect on the far and side positions of the filter structure.

[0017] 2. This dust and sulfur-containing flue gas purification device continuously stirs the lime water slurry to be used through a stirring rod. In conjunction with anti-settling blades, it forms an upward liquid flow in the lime water slurry, which facilitates the uniformity of the lime water slurry, avoids slurry deposition, optimizes fluid distribution, significantly improves desulfurization efficiency and reduces operating costs. Uniform spraying reduces local oversaturation of limestone slurry, accurately controls the atomized particle size of the slurry, avoids ineffective spraying, improves reaction uniformity and resource utilization, and achieves desulfurization efficiency, economy and operation and maintenance stability. Attached Figure Description

[0018] Figure 1 The diagram shown is an overall structural representation of the dust- and sulfur-containing flue gas purification device of this utility model. Figure 1 ;

[0019] Figure 2 The diagram shown is an overall structural representation of the dust- and sulfur-containing flue gas purification device of this utility model. Figure 2 ;

[0020] Figure 3 The diagram shown is a schematic representation of the purification tank structure of the dust- and sulfur-containing flue gas purification device of this utility model.

[0021] Figure 4 The diagram shown is a schematic representation of the cleaning nozzle structure of the dust and sulfur-containing flue gas purification device of this utility model.

[0022] Figure 5 The diagram shown is a schematic representation of the mixing tank structure of the dust- and sulfur-containing flue gas purification device of this utility model.

[0023] Explanation of reference numerals in the attached diagram: 1. Purification tank; 2. Mixing tank; 3. Baffle plate; 4. Filter tube; 5. Connecting rod; 6. Electric telescopic rod; 7. Distribution pipe; 8. Cleaning air nozzle; 9. Air nozzle sleeve; 10. Venturi tube; 11. Lime water nozzle; 12. Drive motor; 13. Drive shaft; 14. Mixing rod; 15. Anti-sedimentation blades; 16. Feed port; 17. External cleaning air pipe; 18. Connecting hose; 19. Air outlet; 20. Sewage outlet; 21. Conveying pipe; 22. Conveying pump. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Please see Figures 1-5 This utility model provides an embodiment of a dust and sulfur-containing flue gas purification device, including a purification tank 1 and a mixing tank 2. A partition 3 is fixedly installed inside the purification tank 1, and a filter tube 4 is fixedly installed on the inner side of the partition 3. A connecting rod 5 is fixedly installed on the upper side inside the purification tank 1, and an electric telescopic rod 6 is fixedly installed at the lower end of the connecting rod 5. A distribution pipe 7 is fixedly installed at the output end of the electric telescopic rod 6, and a cleaning nozzle 8 is fixedly installed at the lower end of the distribution pipe 7. A nozzle sleeve 9 is provided on the surface of the cleaning nozzle 8. A Venturi tube 10 is fixedly connected to the surface of the purification tank 1, and a lime water nozzle 11 is fixedly installed on the Venturi tube 10. The surface of the mixing tank 2 is provided with… The mixing tank 2 has a material conveying assembly. A drive motor 12 is fixedly installed at the upper end of the mixing tank 2. The output end of the drive motor 12 extends into the interior of the mixing tank 2 and is fixedly installed with a transmission shaft 13. A stirring rod 14 and anti-settling blades 15 are fixedly installed on the surface of the transmission shaft 13. A feeding port 16 is provided at the upper end of the mixing tank 2, located on the side of the drive motor 12. Airflow is input through an external cleaning air pipe 17. The cleaning nozzle 8 is moved by the electric telescopic rod 6. The nozzle sleeve 9 rotates while blowing air, thereby automatically adjusting the cleaning position of the cleaning mechanism and cleaning all parts of the filter tube 4 evenly, further ensuring the uniformity of the cleaning force on the inner surface of the filter tube 4.

[0026] Please see Figures 1-4In this embodiment, the electric telescopic rod 6 is used to drive the distribution pipe 7 to move up and down. The surface of the cleaning nozzle 8 is rotatably connected to the nozzle sleeve 9. An external cleaning air pipe 17 is fixedly connected to the side of the upper end of the purification tank 1. The lower end of the external cleaning air pipe 17 extends into the interior of the purification tank 1 and is fixedly installed with a connecting hose 18. The end of the connecting hose 18 away from the external cleaning air pipe 17 is connected to the distribution pipe 7. The filter pipes 4 are evenly distributed. The cleaning nozzles 8 and the filter pipes 4 are adapted to each other. An air outlet 19 is provided at the upper end of the purification tank 1, and a sewage outlet 20 is provided at the lower end of the purification tank 1. The external cleaning air pipe 17 can input airflow, and the electric telescopic rod 6 can drive the distribution pipe... 7. Lifting and moving (the electric telescopic rod 6 can be set as a drive component with similar function), the connecting hose 18 can ensure that the distribution pipe 7 can smoothly input airflow while moving, the cleaning nozzle 8 can move back and forth on the inner surface of the filter pipe 4, the lower end of the nozzle sleeve 9 has an air hole, and the surface has centrally symmetrical air holes (the air holes are distributed on the right side of the front surface and the left side of the rear surface of the nozzle sleeve 9), which facilitates the rotation of the nozzle sleeve 9 while blowing air (the lower air hole cleans the lower part of the filter pipe 4, and the side air hole cleans the side part of the filter pipe 4, working synchronously with the lifting structure), realizing the automatic adjustment of the cleaning position of the cleaning mechanism and evenly cleaning all parts of the filter pipe 4.

[0027] Please see Figure 1 , Figure 2 and Figure 5 In this embodiment, the material conveying assembly includes a material conveying pipe 21, on which a material conveying pump 22 is installed. One end of the material conveying pipe 21 is connected to the mixing tank 2, and the other end is connected to the lime water nozzle 11. A drive motor 12 is used to drive the transmission shaft 13 to rotate. The output end of the drive motor 12 is rotatably connected to the mixing tank 2, and the lower end of the transmission shaft 13 is rotatably connected to the mixing tank 2. The stirring rods 14 are evenly spaced, and the anti-sedimentation blades 15 have a spiral structure design. The material conveying pump 22 can cooperate with the lime water nozzle 11 within the venturi tube 10. In the lime water spraying operation (the feed pump 22 can be configured as a drive component with similar functions), the drive motor 12 can drive the transmission shaft 13 to rotate (the drive motor 12 can be configured as a drive component with similar functions), the stirring rod 14 can continuously stir the lime water slurry, and the anti-settling blades 15 can drive the upward liquid flow during the rotation (the drive motor 12 needs to be in the rotation direction of the anti-settling blades 15 to ensure the upward liquid flow), to avoid the lime water slurry from settling and to ensure the uniformity of the lime water slurry, so as to ensure the working effect of the lime water nozzle 11.

[0028] During operation, airflow is input through the external cleaning air pipe 17, and the distribution pipe 7 is moved up and down by the electric telescopic rod 6, causing the cleaning nozzle 8 to move back and forth on the inner surface of the filter pipe 4. The nozzle sleeve 9 has air holes at the lower end and symmetrical air holes on the surface, which facilitates the rotation of the nozzle sleeve 9 while blowing air, realizing automatic adjustment of the cleaning position of the cleaning mechanism and even cleaning of all parts of the filter pipe 4. While the material pump 22 works with the lime water nozzle 11, the drive motor 12 drives the transmission shaft 13 to rotate, so that the stirring rod 14 continuously stirs the lime water slurry. In conjunction with the anti-settling blade 15, the rising liquid flow is driven during the rotation to prevent the lime water slurry from settling and to ensure the uniformity of the lime water slurry, so as to ensure the working effect of the lime water nozzle 11.

[0029] Through the above steps, airflow is input through the external cleaning air pipe 17, and the cleaning nozzle 8 is moved by the electric telescopic rod 6. In conjunction with the nozzle sleeve 9, the nozzle sleeve 9 rotates while blowing air, thereby automatically adjusting the cleaning position of the cleaning mechanism and cleaning all parts of the filter tube 4 evenly. This further ensures the uniformity of the cleaning force on the inner surface of the filter tube 4, thus solving the problem that when the cleaning mechanism is fixed in position and the filter structure tube is long, the cleaning force is often insufficient, which further affects the cleaning effect on some parts of the filter structure.

Claims

1. A dust- and sulfur-containing flue gas purification device, comprising a purification tank (1), characterized in that: It also includes a mixing tank (2), a baffle (3) fixedly installed inside the purification tank (1), a filter tube (4) fixedly installed on the inner side of the baffle (3), a connecting rod (5) fixedly installed on the upper side inside the purification tank (1), an electric telescopic rod (6) fixedly installed at the lower end of the connecting rod (5), a distribution pipe (7) fixedly installed at the output end of the electric telescopic rod (6), a cleaning nozzle (8) fixedly installed at the lower end of the distribution pipe (7), a nozzle sleeve (9) provided on the surface of the cleaning nozzle (8), and a fixed connection on the surface of the purification tank (1). A venturi tube (10) is connected, and a lime water nozzle (11) is fixedly installed on the venturi tube (10). A material conveying assembly is provided on the surface of the mixing tank (2). A drive motor (12) is fixedly installed at the upper end of the mixing tank (2). A drive shaft (13) is fixedly installed inside the mixing tank (2) at the output end of the drive motor (12). A stirring rod (14) and anti-settling blades (15) are fixedly installed on the surface of the drive shaft (13). A feeding port (16) is provided at the upper end of the mixing tank (2) on the side of the drive motor (12).

2. The dust- and sulfur-containing flue gas purification device according to claim 1, characterized in that: The electric telescopic rod (6) is used to drive the distribution pipe (7) to move up and down and slide, and the surface of the cleaning nozzle (8) is rotatably connected to the nozzle sleeve (9).

3. The dust- and sulfur-containing flue gas purification device according to claim 1, characterized in that: An external cleaning air pipe (17) is fixedly connected to the upper side of the purification tank (1), and a connecting hose (18) is fixedly installed at the lower end of the external cleaning air pipe (17) inside the purification tank (1).

4. The dust- and sulfur-containing flue gas purification device according to claim 3, characterized in that: The end of the connecting hose (18) away from the external cleaning air pipe (17) is connected to the distribution pipe (7). The filter pipes (4) are distributed at equal intervals. The cleaning nozzle (8) is adapted to the filter pipe (4). The upper end of the purification tank (1) is provided with an air outlet (19), and the lower end of the purification tank (1) is provided with a sewage outlet (20).

5. The dust- and sulfur-containing flue gas purification device according to claim 1, characterized in that: The material conveying assembly includes a material conveying pipe (21), on which a material conveying pump (22) is installed. One end of the material conveying pipe (21) is connected to the mixing tank (2), and the other end of the material conveying pipe (21) is connected to the lime water nozzle (11).

6. The dust- and sulfur-containing flue gas purification device according to claim 1, characterized in that: The drive motor (12) is used to drive the transmission shaft (13) to rotate. The output end of the drive motor (12) is rotatably connected to the mixing tank (2), and the lower end of the transmission shaft (13) is rotatably connected to the mixing tank (2).

7. The dust- and sulfur-containing flue gas purification device according to claim 1, characterized in that: The stirring rods (14) are evenly spaced, and the anti-sedimentation blades (15) are designed with a spiral structure.

Images