A high-efficiency flue gas dust removal pretreatment device

Abstract

This utility model relates to the field of flue gas dust removal technology, specifically, to a high-efficiency flue gas dust removal pretreatment device. This utility model provides such a high-efficiency flue gas dust removal pretreatment device, including a support frame, a double-cone cyclone separator, a flue gas inlet pipe, a flue gas collection hood, a motor, a rotating shaft, a bevel gear, and a protective cover. The double-cone cyclone separator is installed on the left side of the support frame. The upper right side of the double-cone cyclone separator is connected to and communicates with the flue gas inlet pipe. A flue gas collection hood is installed at the other end of the flue gas inlet pipe. A motor is fixedly connected to the lower rear side of the flue gas inlet pipe. A protective cover is installed inside the lower part of the flue gas inlet pipe. A rotating shaft is rotatably connected inside the protective cover. A bevel gear is fixedly connected to the upper end of the rotating shaft. The output shaft of the motor passes through the flue gas inlet pipe and the protective cover in sequence. This utility model uses a motor to drive the blades to rotate, creating a turbulent airflow before the flue gas enters the cyclone separator, increasing the probability of collision between dust particles, promoting their settling, and thus improving the primary dust removal efficiency.

Description

Technical Field

[0001] This utility model relates to the field of flue gas dust removal technology, and in particular to a high-efficiency flue gas dust removal pretreatment device. Background Technology

[0002] With the continuous acceleration of industrialization, many industrial sectors such as metallurgy, chemical industry, and power inevitably generate a large amount of high-temperature flue gas containing dust particles during the production process. This flue gas often carries a variety of harmful substances, such as heavy metal oxides, sulfides, and fine suspended particles. If it is directly discharged into the atmosphere without effective treatment, it will not only cause air pollution and exacerbate environmental problems such as smog, but also pose a serious threat to the human respiratory system and health. Especially in the vicinity of cities or industrial concentrated areas, flue gas pollution has become an important factor affecting the quality of the ecological environment and the quality of life of residents. Therefore, the research and development and application of efficient, stable flue gas dust removal equipment that can adapt to complex working conditions has become an important research direction and urgent need in the field of industrial environmental protection.

[0003] Currently, common flue gas dust removal devices mainly include gravity dust collectors, cyclone dust collectors, wet dust collectors, and electrostatic precipitators. Among them, traditional cyclone dust collectors mainly rely on centrifugal force to achieve dust separation, but their ability to capture fine particles (especially particles with a diameter of less than 5 micrometers) is limited, resulting in low overall dust removal efficiency and difficulty in meeting increasingly stringent environmental emission standards. At the same time, the equipment lacks an effective auxiliary disturbance mechanism, resulting in a low probability of collision between dust particles in the flue gas, leading to low settling efficiency and thus affecting the treatment effect of the primary dust removal stage.

[0004] Therefore, it is necessary to design a high-efficiency flue gas dust removal pretreatment device to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to overcome the shortcomings of traditional cyclone dust collectors, which mainly rely on centrifugal force to separate dust but have limited ability to capture fine particles, resulting in low dust removal efficiency and difficulty in meeting strict environmental protection standards; at the same time, they lack a disturbance mechanism, resulting in low particle collision probability, poor settling effect, and affecting primary dust removal efficiency, this utility model provides a high-efficiency flue gas dust removal pretreatment device.

[0006] A high-efficiency flue gas dust removal pretreatment device includes a support frame, a double-cone cyclone separator, a flue gas inlet pipe, a flue gas hood, a motor, a rotating shaft, a bevel gear, a protective cover, blades, and a flue gas exhaust pipe. The double-cone cyclone separator is installed on the left side of the support frame. The flue gas inlet pipe is connected to and communicates with the upper right side of the double-cone cyclone separator. A flue gas hood is installed at the other end of the flue gas inlet pipe. A motor is fixedly connected to the lower rear side of the flue gas inlet pipe. A protective cover is installed inside the lower part of the flue gas inlet pipe. A rotating shaft is rotatably connected inside the protective cover. A bevel gear is fixedly connected to the upper end of the rotating shaft. The output shaft of the motor passes through the flue gas inlet pipe and the protective cover in sequence and is connected to another bevel gear. The two bevel gears mesh with each other. Blades are installed at the lower end of the rotating shaft. The flue gas exhaust pipe is connected to and communicates with the top of the double-cone cyclone separator.

[0007] To further clarify, the smoke inlet pipe, smoke collection hood, and smoke exhaust pipe are all made of stainless steel.

[0008] To further explain, it also includes a liquid tank, an inlet pipe, a connecting pipe, a liquid pump, a distribution pipe, and an atomizing nozzle. The liquid tank is fixedly connected to the top right side of the support frame. An inlet pipe is opened on the upper rear side of the liquid tank. A connecting pipe is installed inside the liquid tank. A liquid pump is installed at the bottom of the connecting pipe. The front end of the connecting pipe extends out of the liquid tank and is connected to multiple distribution pipes. The lower end of each distribution pipe is connected to an atomizing nozzle, which is located inside the smoke inlet pipe.

[0009] Further explanation: It also includes snap-fit ​​blocks, honeycomb filter membranes, adapter blocks, screw rods, and knobs. Snap-fit ​​blocks are provided on the left and right sides of the front end of the exhaust pipe. A honeycomb filter membrane is installed at the front end of the exhaust pipe. Adapter blocks are rotatably connected to the left and right sides of the honeycomb filter membrane. Screw rods are fixedly connected to the rear ends of the two adapter blocks. The rear ends of the two screw rods engage with the corresponding snap-fit ​​blocks. Knobs are threadedly connected to the rear ends of both screw rods.

[0010] To further explain, filter screens are provided on both the front and back sides of the honeycomb filter membrane.

[0011] To further explain, it also includes an electrode frame, wires, and a pulse power supply. The electrode frame is located at the front end inside the exhaust pipe, and the top of the electrode frame is connected to a wire. A pulse power supply is installed at the front end of the top of the exhaust pipe, and the pulse power supply is connected to the other end of the wire.

[0012] Compared with the prior art, the present invention has the following advantages: 1. The present invention drives the blades to rotate by a motor, forming a turbulent airflow before the flue gas enters the cyclone separator, increasing the probability of collision between dust particles, promoting their settling, and thus improving the primary dust removal efficiency.

[0013] 2. This utility model features a protective cover inside the flue gas inlet pipe, which isolates the rotating shaft and bevel gear transmission mechanism from the flue gas, preventing high-temperature or corrosive gases from directly contacting key mechanical components, thereby effectively extending the service life of the equipment and reducing the failure rate.

[0014] 3. This utility model adopts a quick-installation structure consisting of a snap-fit ​​block, a connecting block, a spiral rod, and a knob, which enables the honeycomb filter membrane to be quickly installed at the front end of the exhaust pipe. When disassembling, the honeycomb filter membrane can be removed simply by loosening the knob, which is convenient for cleaning or replacement and greatly reduces the later maintenance cost.

[0015] 4. This utility model generates a pulsed electric field by cooperating a high-voltage pulse power supply with an electrode frame, which is suitable for treating flue gas with different concentrations and particle size distributions, and enhances the device's adaptability to complex working conditions.

[0016] 5. This utility model is equipped with a spray system consisting of a liquid tank, a liquid pump, a diversion pipe and an atomizing nozzle, which can perform wet dust removal on flue gas, effectively capture fine particles and reduce flue gas temperature. At the same time, cleaning liquid or recovery liquid can be added as needed to achieve efficient utilization of liquid resources and meet environmental protection requirements. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the support frame, double-cone cyclone separator, and smoke inlet pipe of this utility model.

[0019] Figure 3 This is a schematic diagram of the covering structure for components such as the rotating shaft, bevel gear, and protective cover of this utility model.

[0020] Figure 4 This is a schematic diagram of the covering structure for components such as the connecting pipe, liquid pump, and diversion pipe of this utility model.

[0021] Figure 5 This is a three-dimensional structural diagram of the honeycomb filter membrane, adapter block, and spiral rod of this utility model.

[0022] Figure 6 This is a schematic diagram of the covering structure of the components such as the snap-fit ​​block, honeycomb filter membrane, and adapter block of this utility model.

[0023] Figure 7 This is a three-dimensional structural diagram of the electrode frame, wires, and pulse power supply of this utility model.

[0024] The markings in the attached diagram are as follows: 1. Support frame, 2. Double cone cyclone separator, 3. Smoke inlet pipe, 4. Smoke hood, 5. Motor, 6. Shaft, 7. Bevel gear, 701. Protective cover, 8. Blade, 9. Smoke exhaust pipe, 10. Liquid tank, 11. Liquid inlet pipe, 12. Connecting pipe, 13. Liquid pump, 14. Diverter pipe, 15. Atomizing nozzle, 16. Snap-fit ​​block, 17. Honeycomb filter membrane, 18. Adapter block, 19. Spiral rod, 20. Knob, 21. Electrode frame, 22. Wire, 23. Pulse power supply. Detailed Implementation

[0025] Example: A high-efficiency flue gas dust removal pretreatment device, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, it includes a support frame 1, a double-cone cyclone separator 2, a smoke inlet pipe 3, a smoke collection hood 4, a motor 5, a rotating shaft 6, a bevel gear 7, a protective cover 701, blades 8, and a smoke exhaust pipe 9. The double-cone cyclone separator 2 is installed on the left side of the support frame 1. The upper right side of the double-cone cyclone separator 2 is connected to and communicates with the smoke inlet pipe 3. The other end of the smoke inlet pipe 3 is equipped with a smoke collection hood 4. The motor 5 is installed on the lower rear side of the smoke inlet pipe 3 by bolts. The protective cover 701 is installed in the lower part of the smoke inlet pipe 3. The rotating shaft 6 is rotatably connected inside the protective cover 701. A bevel gear 7 is welded to the upper end of the rotating shaft 6. The output shaft of the motor 5 passes through the smoke inlet pipe 3 and the protective cover 701 in sequence, and is connected to another bevel gear 7. The two bevel gears 7 mesh with each other. Blades 8 are installed at the lower end of the rotating shaft 6. The top of the double-cone cyclone separator 2 is connected to and communicates with the smoke exhaust pipe 9. The smoke pipe 3, the smoke collection hood 4, and the smoke exhaust pipe 9 are all made of stainless steel.

[0026] like Figure 1 and Figure 4 As shown, it also includes a liquid tank 10, an inlet pipe 11, a connecting pipe 12, a liquid pump 13, a diverter pipe 14, and an atomizing nozzle 15. The liquid tank 10 is installed on the top right side of the support frame 1 by bolts. An inlet pipe 11 is provided on the upper rear side of the liquid tank 10. A connecting pipe 12 is provided inside the liquid tank 10. The liquid pump 13 is installed at the bottom of the connecting pipe 12. The front end of the connecting pipe 12 passes through the liquid tank 10 and is connected to multiple diverter pipes 14. The lower end of each diverter pipe 14 is connected to an atomizing nozzle 15. The atomizing nozzle 15 is located inside the smoke inlet pipe 3.

[0027] like Figure 1 , Figure 5 and Figure 6 As shown, it also includes a snap-fit ​​block 16, a honeycomb filter membrane 17, an adapter block 18, a spiral rod 19, and a knob 20. Snap-fit ​​blocks 16 are respectively provided on the left and right sides of the front end of the exhaust pipe 9. A honeycomb filter membrane 17 is installed at the front end of the exhaust pipe 9. Filter screens are respectively provided on the front and rear sides of the honeycomb filter membrane 17. Adapter blocks 18 are rotatably connected to the left and right sides of the honeycomb filter membrane 17. The rear ends of the two adapter blocks 18 are respectively connected to spiral rods 19 by welding. The rear ends of the two spiral rods 19 are engaged with the corresponding snap-fit ​​blocks 16. At the same time, the rear ends of the two spiral rods 19 are threadedly connected to knobs 20.

[0028] like Figure 5 and Figure 7As shown, it also includes an electrode frame 21, a wire 22 and a pulse power supply 23. The electrode frame 21 is provided at the front end of the inside of the exhaust pipe 9. The top of the electrode frame 21 is connected to the wire 22. The pulse power supply 23 is installed at the front end of the top of the exhaust pipe 9. The pulse power supply 23 is connected to the other end of the wire 22.

[0029] When this device is needed, first, install the device near the flue gas outlet, ensuring the support frame 1 is stable. Then, check if the liquid tank 10 has been filled with an appropriate amount of cleaning fluid, and confirm that the honeycomb filter membrane 17 is installed in place and the knob 20 is locked. Finally, check if the wiring connection between the electrode frame 21 and the pulse power supply 23 is normal. After completing the above preparations, turn on the motor 5, liquid pump 13, and pulse power supply 23 in sequence to prepare for operation. The output shaft of the motor 5 drives the bevel gear 7 to rotate. Since the two bevel gears 7 mesh with each other, they drive the rotating shaft 6 to rotate, thereby driving the blades 8 to rotate. The rotation of the blades 8 enhances the turbulence of the flue gas in the pipeline. The system improves the collision and settling efficiency of dust particles. Simultaneously, the protective cover 701 encloses the rotating shaft 6 and the bevel gear 7 transmission mechanism, preventing direct contact of the flue gas with critical components and extending the equipment's service life. Dust-laden flue gas is drawn in by the fume hood 4 and enters the double-cone cyclone separator 2 through the inlet pipe 3. In the double-cone cyclone separator 2, the flue gas forms a high-speed rotating airflow. Large dust particles are thrown against the separator wall by centrifugal force and fall along the conical surface for collection. The preliminarily purified flue gas continues to flow upwards and enters the exhaust pipe 9. At the same time, the liquid pump 13 starts, transporting the cleaning liquid in the liquid tank 10 to the diversion pipe 14 through the connecting pipe 12. Multiple atomizing nozzles 15 simultaneously spray atomized droplets, which interact with the flue gas... The gas and flue gas are thoroughly mixed, and atomized droplets capture fine particles in the flue gas and reduce their temperature, achieving wet dust removal. The flue gas, after wet treatment, continues to flow forward into subsequent purification stages. Electrode frame 21 is connected to an external pulse power supply 23 via wire 22. When the pulse power supply 23 is energized, it generates a high-voltage pulsed electric field. Under the influence of this electric field, the remaining fine particles in the flue gas are further captured and settled. Subsequently, the flue gas undergoes fine filtration through a honeycomb filter membrane 17. The honeycomb filter membrane 17 and the filters placed before and after it work together to intercept residual dust, improving the final purification effect. Ultimately, the purified flue gas meets emission standards. In addition, the inlet pipe 3 and the smoke collection hood... Both component 4 and the exhaust pipe 9 are made of stainless steel to improve corrosion resistance and service life. After use, turn off all related power sources, including motor 5, liquid pump 13 and pulse power supply 23. If the honeycomb filter membrane 17 needs to be cleaned, the knob 20 can be turned counterclockwise manually or with a suitable tool until the knob 20 is completely released from the screw rod 19. After the knob 20 is released, carefully remove the adapter block 18 from the snap-fit ​​block 16. The honeycomb filter membrane 17 and related components can then be cleaned or replaced. After cleaning, reset the honeycomb filter membrane 17 and reinstall it for the next round of use. If the device needs to be used again, repeat the above steps.

Claims

1. A high efficiency flue gas dedusting pretreatment device, characterized in that: It includes a support frame (1), a double-cone cyclone separator (2), a smoke inlet pipe (3), a smoke collection hood (4), a motor (5), a rotating shaft (6), a bevel gear (7), a protective cover (701), blades (8), and a smoke exhaust pipe (9). The double-cone cyclone separator (2) is installed on the left side of the support frame (1). The smoke inlet pipe (3) is connected and communicated to the upper right side of the double-cone cyclone separator (2). The smoke collection hood (4) is provided at the other end of the smoke inlet pipe (3). The motor (5) is fixedly connected to the lower rear side of the smoke inlet pipe (3). A protective cover (701) is installed in the lower part of the inlet pipe (3). A rotating shaft (6) is rotatably connected inside the protective cover (701). A bevel gear (7) is fixedly connected to the upper end of the rotating shaft (6). The output shaft of the motor (5) passes through the inlet pipe (3) and the protective cover (701) in sequence, and is connected to another bevel gear (7). The two bevel gears (7) mesh with each other. A blade (8) is installed at the lower end of the rotating shaft (6). The top of the double cone cyclone separator (2) is connected to and communicates with the exhaust pipe (9).

2. A high efficiency flue gas dedusting pretreatment device according to claim 1, characterized in that: The inlet pipe (3), the smoke collection hood (4), and the exhaust pipe (9) are all made of stainless steel.

3. A high efficiency flue gas dedusting pre-treatment device according to claim 2, characterized in that: It also includes a liquid tank (10), an inlet pipe (11), a connecting pipe (12), a liquid pump (13), a diverter pipe (14), and an atomizing nozzle (15). The liquid tank (10) is fixedly connected to the top right side of the support frame (1). An inlet pipe (11) is opened on the upper rear side of the liquid tank (10). A connecting pipe (12) is provided inside the liquid tank (10). A liquid pump (13) is installed at the bottom of the connecting pipe (12). The front end of the connecting pipe (12) passes through the liquid tank (10) and is connected to multiple diverter pipes (14). The lower end of each diverter pipe (14) is connected to an atomizing nozzle (15). The atomizing nozzle (15) is located inside the smoke inlet pipe (3).

4. A high efficiency flue gas dedusting pre-treatment device according to claim 3, characterized in that: It also includes a snap-fit ​​block (16), a honeycomb filter membrane (17), a transition block (18), a screw rod (19), and a knob (20). The front end of the exhaust pipe (9) is provided with snap-fit ​​blocks (16) on the left and right sides respectively. The front end of the exhaust pipe (9) is equipped with a honeycomb filter membrane (17). The left and right sides of the honeycomb filter membrane (17) are rotatably connected with transition blocks (18). The rear ends of the two transition blocks (18) are fixedly connected with screw rods (19). The rear ends of the two screw rods (19) are engaged with the corresponding snap-fit ​​blocks (16). At the same time, the rear ends of the two screw rods (19) are threaded with knobs (20).

5. A high efficiency flue gas dedusting pretreatment device according to claim 4, characterized in that: The honeycomb filter membrane (17) has filter screens on both the front and back sides.

6. A high efficiency flue gas dedusting pre-treatment device according to claim 5, characterized in that: It also includes an electrode frame (21), a wire (22) and a pulse power supply (23). The front end of the exhaust pipe (9) is provided with an electrode frame (21), the top of the electrode frame (21) is connected to a wire (22), and the front end of the top of the exhaust pipe (9) is equipped with a pulse power supply (23). The pulse power supply (23) is connected to the other end of the wire (22).

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