Rotary kiln incineration flue gas treatment device

Abstract

The utility model relates to the technical field of flue gas treatment, and discloses a rotary kiln incineration flue gas treatment device which comprises a shell, a smoke inlet pipe and a smoke exhaust pipe which are communicated with the interior of the shell are arranged on the two sides of the shell respectively, and a filter box communicated with the interior of the shell is arranged at the bottom of the shell. A water storage box communicated with the filter box and used for storing water is arranged at the bottom of the filter box, a drainage pipe is arranged on one side of the water storage box, and the other end of the drainage pipe is fixedly connected with a water pump for providing power. Clean water can be sprayed into the shell through the pipe frame and the spray heads, then dust falling treatment is carried out on smoke input into the shell, dust contained in the smoke is eliminated, the influence on follow-up treatment of the smoke is avoided, and the dust in the smoke can be removed through the water storage box and the water pump. Sprayed clean water can be collected and treated after dust collection, and the clean water in the water storage box can be recycled through the water pump, so that waste is avoided.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, and more specifically to a rotary kiln incineration flue gas treatment device. Background Technology

[0002] Rotary kiln incineration technology is widely used in the incineration and disposal of hazardous waste, industrial sludge, and medical waste due to its high-temperature processing capacity and wide adaptability to various types of waste. However, the flue gas generated during the incineration process has a complex composition, containing pollutants such as particulate matter, acidic gases, heavy metals, and dioxins, which need to be treated by a purification system to meet environmental emission standards.

[0003] A search revealed Chinese patent CN215742849U, which discloses a flue gas treatment device for hollow brick production. This device can treat the flue gas generated by hollow brick kilns, reducing air pollution. It solves the problem that a large amount of sulfur dioxide gas is generated during the production of hollow bricks, but the flue gas contains a lot of dust. If it is not pretreated, it will easily affect the subsequent desulfurization and denitrification operations. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a rotary kiln incineration flue gas treatment device to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a rotary kiln combustion flue gas treatment device, including a shell, with an inlet pipe and an outlet pipe respectively communicating with the interior on both sides of the shell, a filter box communicating with the interior at the bottom of the shell, a water storage box communicating with the bottom of the filter box for water storage, a drain pipe on one side of the water storage box, a water pump fixedly connected to the other end of the drain pipe, an inlet pipe fixedly connected to the other end of the water pump, and a pipe rack fixedly connected to the other end of the inlet pipe through one side inner wall of the shell, with a plurality of symmetrical nozzles below the pipe rack.

[0006] As a further embodiment of this utility model, a through-hole is provided on one side of the filter box, and limiting grooves that cooperate with the through-hole are provided on the inner walls of multiple sides of the filter box. A sliding frame is slidably connected in the limiting groove and the through-hole, and a filter screen is fixedly connected in the sliding frame.

[0007] As a further embodiment of this utility model, a square plate is provided at the center of the filter screen, a turntable is rotatably connected to the upper surface of the square plate, a plurality of scrapers arranged in a circular array are fixedly connected to the outer circumference of the turntable, and a drive motor for rotating the turntable along the axial direction is fixedly connected to the lower surface of the square plate.

[0008] As a further embodiment of this utility model, a mesh frame is fixedly connected to the inside of the shell, and multiple ceramic blocks are placed on the mesh frame, with gaps left between the multiple ceramic blocks.

[0009] As a further embodiment of this utility model, an arc-shaped baffle is fixedly connected to one inner wall of the housing above the smoke inlet pipe.

[0010] As a further embodiment of this utility model, multiple sets of fixing rods are fixedly connected to the outer wall of the tube rack, and each set consists of two rods, with the other end of each fixing rod fixed to the inner wall of the shell.

[0011] As a further embodiment of this utility model, a bracket is fixedly connected to one side of the water storage box, and one side of the bracket is fixed to the water pump.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model can spray clean water into the housing through the provided pipe frame and nozzle, thereby treating the flue gas entering the housing to reduce dust, eliminate the dust contained in the flue gas, and avoid affecting the subsequent treatment of the flue gas.

[0014] 2. This utility model, through the provided water storage box and water pump, can collect and treat the sprayed clean water after dust extraction, and can also recycle the clean water in the water storage box through the water pump, thus avoiding waste.

[0015] 3. This utility model can filter polluted water that has absorbed dust by means of a filter screen and scraper, which facilitates the recycling of clean water and eliminates the need for constant water replacement, thus saving a lot of water resources. In addition, the scraper can prevent the filter screen from becoming clogged due to excessive dust on the surface. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front three-dimensional structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the rear three-dimensional structure of this utility model.

[0018] Figure 3 This is a cross-sectional view of the shell structure of this utility model.

[0019] Figure 4 This is a cross-sectional view of the filter box of this utility model.

[0020] The attached diagram is labeled as follows: 1. Shell; 2. Exhaust pipe; 3. Filter box; 4. Water storage box; 5. Smoke inlet pipe; 6. Water inlet pipe; 7. Drain pipe; 8. Water pump; 9. Mesh frame; 10. Ceramic block; 11. Pipe rack; 12. Nozzle; 13. Fixing rod; 14. Arc-shaped baffle; 15. Alternating opening; 16. Limiting groove; 17. Sliding frame; 18. Filter screen; 19. Square plate; 20. Drive motor; 21. Scraper; 22. Turntable. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Reference Figures 1-4 This utility model provides a rotary kiln combustion flue gas treatment device, including a shell 1. A flue gas inlet pipe 5 and a flue gas outlet pipe 2, respectively, are provided on both sides of the shell 1 and communicate with its interior. A filter box 3, also communicating with its interior, is located at the bottom of the shell 1. A water storage box 4, communicating with its interior, is located at the bottom of the filter box 3. A drain pipe 7 is provided on one side of the water storage box 4. A water pump 8, providing power, is bolted to the other end of the drain pipe 7. A water inlet pipe 6, providing power, is bolted to the other end of the water pump 8. The other end of the water inlet pipe 6 passes through the inner wall of one side of the shell 1 and is bolted to a pipe frame 11. Multiple symmetrical nozzles 12 are located below the pipe frame 11. Before pre-treatment of the flue gas, the external flue gas pipe is connected to the flue gas inlet pipe 5, and then the flue gas is input from the flue gas inlet pipe 5. The pump 8 draws clean water from the water storage box 4 through the drain pipe 7, and the pump 8 also sends the clean water through the inlet pipe 6 to the pipe rack 11. Then, it is sprayed out through the nozzle 12 to treat the dust in the flue gas inside the housing 1. The dust adheres to the sprayed water and falls down with gravity, then flows back into the water storage box 4 through the filter box 3 for recycling. The pipe rack 11 and the nozzle 12 can spray clean water into the housing 1 to treat the dust in the flue gas entering the housing 1, remove the dust contained in the flue gas, and avoid affecting the subsequent treatment of the flue gas. In addition, the water storage box 4 and the pump 8 can collect the sprayed clean water after dust suction, and the water in the water storage box 4 can be recycled by the pump 8 to avoid waste.

[0023] In this invention, a through-hole 15 is provided on one side of the filter box 3, and limiting grooves 16 that cooperate with the through-hole 15 are provided on the inner walls of multiple sides of the filter box 3. A sliding frame 17 is slidably connected in the limiting groove 16 and the through-hole 15. A filter screen 18 is welded in the sliding frame 17. A square plate 19 is provided at the center of the filter screen 18. A turntable 22 is rotatably connected to the upper surface of the square plate 19. Multiple scrapers 21 arranged in a circular array are fixedly connected to the outer circumference of the turntable 22 by bolts. A drive motor 20 that causes the turntable 22 to rotate axially is fixedly connected to the lower surface of the square plate 19 by bolts. After the clean water has absorbed the dust, it passes through the filter screen 18 to filter the wastewater containing dust. The filter screen 18 is filtered to remove dust. The clean water then flows into the water storage box 4 for recycling. When there is a lot of dust on the surface of the filter screen 18, the drive motor 20 is started, which drives the turntable 22 to rotate so that the scraper 21 on it rotates along the surface of the filter screen 18. When it is necessary to clean the surface of the filter screen 18, the sliding frame 17 can be pulled out along the clearance opening 15. Through the filter screen 18 and the scraper 21, the polluted water that has absorbed dust can be filtered, making it convenient for the clean water to be recycled. It is not necessary to change the water all the time, which saves a lot of water resources. In addition, the scraper 21 can prevent the filter screen 18 from being clogged due to a lot of dust.

[0024] To further enhance the dust reduction effect, a mesh frame 9 is fixedly connected to the inside of the shell 1 by bolts. Multiple ceramic blocks 10 are placed on the mesh frame 9, and gaps are left between the multiple ceramic blocks 10. Through the mesh frame 9 and ceramic blocks 10, the running trajectory of the flue gas in the shell 1 can be changed, so that the flue gas stays in the shell 1 for a longer time, thereby more thoroughly treating the flue gas for dust reduction.

[0025] To prevent clean water from entering the flue pipe 5, an arc-shaped baffle 14 is bolted to the inner wall of one side of the housing 1 above the flue pipe 5. To increase the stability of the pipe support 11, multiple sets of fixing rods 13 are welded to the outer wall of the pipe support 11, with two rods in each set. The other end of each fixing rod 13 is fixed to the inner wall of the housing 1. To increase the stability of the water pump 8, a bracket is bolted to one side of the water storage box 4, and one side of the bracket is fixed to the water pump 8.

[0026] The use of this utility model involves the following steps:

[0027] S1: Before the flue gas needs to be pretreated, connect the external flue pipe to the flue pipe 5. Then, the flue gas is input from the flue pipe 5. Start the water pump 8 to draw clean water from the water storage box 4 through the drain pipe 7. The water pump 8 also sends the clean water through the water inlet pipe 6 to the pipe rack 11. Then, it is sprayed out through the nozzle 12 to treat the flue gas in the housing 1. The dust adheres to the sprayed water and falls with gravity. It then flows back into the water storage box 4 through the filter box 3 for recycling.

[0028] S2: After the clean water absorbs the dust when passing through the filter box 3, it passes through the filter screen 18 to filter the wastewater containing dust, filtering out the dust inside. Then the clean water flows into the water storage box 4 for recycling.

[0029] S3: When there is a lot of dust on the surface of the filter screen 18, start the drive motor 20, which will drive the turntable 22 to rotate so that the scraper 21 on it rotates along the surface of the filter screen 18. When it is necessary to clean the surface of the filter screen 18, the slide frame 17 can be pulled out along the clearance opening 15.

[0030] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0031] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A rotary kiln combustion flue gas treatment device, comprising a shell (1), characterized in that: The housing (1) has a smoke inlet pipe (5) and a smoke outlet pipe (2) communicating with its interior on both sides. The bottom of the housing (1) has a filter box (3) communicating with its interior. The bottom of the filter box (3) has a water storage box (4) communicating with it for water storage. The water storage box (4) has a drain pipe (7) on one side. The other end of the drain pipe (7) is fixedly connected to a water pump (8) that provides power. The other end of the water pump (8) is fixedly connected to a water inlet pipe (6). The other end of the water inlet pipe (6) passes through the inner wall of one side of the housing (1) and is fixedly connected to a pipe rack (11). A plurality of symmetrical nozzles (12) are provided below the pipe rack (11).

2. The rotary kiln incineration flue gas treatment device according to claim 1, characterized in that: The filter box (3) has a through-hole (15) on one side. The filter box (3) has a limiting groove (16) on multiple inner walls that cooperate with the through-hole (15). A sliding frame (17) is slidably connected in the limiting groove (16) and the through-hole (15). A filter screen (18) is fixedly connected in the sliding frame (17).

3. The rotary kiln incineration flue gas treatment device according to claim 2, characterized in that: The filter screen (18) has a square plate (19) at its center. A turntable (22) is rotatably connected to the upper surface of the square plate (19). Multiple scrapers (21) arranged in a circular array are fixedly connected to the outer circumference of the turntable (22). A drive motor (20) is fixedly connected to the lower surface of the square plate (19) to make the turntable (22) rotate along the axial direction.

4. The rotary kiln incineration flue gas treatment device according to claim 1, characterized in that: A mesh frame (9) is fixedly connected to the inside of the shell (1), and multiple ceramic blocks (10) are placed on the mesh frame (9), with gaps between the multiple ceramic blocks (10).

5. The rotary kiln incineration flue gas treatment device according to claim 4, characterized in that: An arc-shaped baffle (14) is fixedly connected to one side of the inner wall of the housing (1) and above the smoke inlet pipe (5).

6. The rotary kiln incineration flue gas treatment device according to claim 1, characterized in that: Multiple sets of fixing rods (13) are fixedly connected to the outer wall of the tube frame (11), and each set consists of two rods. The other end of each fixing rod (13) is fixed to the inner wall of the shell (1).

7. The rotary kiln incineration flue gas treatment device according to claim 1, characterized in that: A bracket is fixedly connected to one side of the water storage box (4), and one side of the bracket is fixed to the water pump (8).

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