A hazardous waste incineration flue gas purification device

Abstract

This utility model relates to the field of hazardous waste incineration flue gas purification, specifically a hazardous waste incineration flue gas purification device, including an air inlet pipe, the end of which is fixedly connected to a flow guiding device; the flow guiding device includes a tubular outer shell, a flow guiding plate, a first air distribution plate, and a second air distribution plate, the flow guiding plate and the first air distribution plate being fixedly connected to the tubular outer shell, and the first air distribution plate and the second air distribution plate being fixedly connected by an annular plate; this utility model, by setting up a flow guiding device, guides the flue gas at the inlet of the bag filter, avoiding excessive local dust concentration in the purification chamber due to eddies, which would reduce purification efficiency. The flue gas flows through the flow guiding plate to the first air distribution plate, and after being discharged from the ventilation holes on the surface of the first air distribution plate, it passes through the second air distribution plate again, deepening the air distribution effect. This utility model, by utilizing a flow guiding device to intervene in the flow of flue gas, solves the problem of excessive local dust concentration in the purification chamber due to eddies.

Description

Technical Field

[0001] This utility model relates to the field of hazardous waste incineration flue gas purification, specifically a hazardous waste incineration flue gas purification device. Background Technology

[0002] When hazardous waste is incinerated, toxic and harmful flue gas is generated. The flue gas must be collected and purified to meet emission standards before it can be released. The general treatment process is as follows: first, the flue gas is cooled by a quench tower; then, an alkaline solution is sprayed to remove acidic gases; then, activated carbon is injected into the flue to adsorb harmful substances such as dioxins and heavy metals; subsequently, the flue gas is captured by a bag filter; and finally, it undergoes denitrification and wet scrubbing treatment. After passing the test, the flue gas is released.

[0003] Existing treatment methods often result in flue gas being discharged into a baghouse dust collector via pipes. However, due to the tortuous arrangement of the pipes, the flue gas velocity varies at different locations, causing eddies in the flue gas within the purification chamber and leading to excessively high local dust concentrations. To address these issues, this invention proposes a flue gas purification device for hazardous waste incineration. Utility Model Content

[0004] To overcome the shortcomings of existing technologies and solve the problem of excessive local dust concentration caused by eddies in the purification chamber, this utility model proposes a hazardous waste incineration flue gas purification device.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a hazardous waste incineration flue gas purification device, including an air inlet pipe, and a flow guiding device is fixedly connected to the end of the air inlet pipe;

[0006] The air guiding device includes a tubular outer shell, the end of which is fixedly connected to an air intake pipe. A first annular fixing plate is fixedly connected to the end of the tubular outer shell. A first positioning hole is formed on the surface of the first annular fixing plate. A first bolt is movably connected to the inner wall of the first positioning hole. A first nut is threaded onto the surface of the first bolt. A sealing ring is fixedly connected to the end of the tubular outer shell. A guide plate is fixedly connected to the inner wall of the tubular outer shell. A first air distribution plate is fixedly connected to the end of the tubular outer shell. An annular plate is fixedly connected to the surface of the first air distribution plate. A second air distribution plate is fixedly connected to the surface of the annular plate. Ventilation holes are formed on the surfaces of both the first and second air distribution plates. The side of the annular plate is movably connected to the inner wall of the air intake pipe.

[0007] Preferably, the intake pipe has two sections, the flow guiding device is located between the two sections of the intake pipe, and a second annular fixing plate is fixedly connected to the end face of the intake pipe.

[0008] Preferably, a purification box is fixedly connected to the surface of the air intake pipe, a support frame is fixedly connected to the surface of the purification box, and a mounting bracket is fixedly connected to the top of the purification box.

[0009] Preferably, the outlet of the mounting bracket extends to the outside of the purification box, and a gas collection hood is fixedly connected to the top surface of the purification box, with an air outlet pipe fixedly connected to the surface of the gas collection hood.

[0010] Preferably, the bottom of the purification box is provided with a ash discharge port, a support block is fixedly connected to the surface of the ash discharge port, a movable rod is fixedly connected to the inner wall of the support block, an impeller is fixedly connected to the surface of the movable rod, and a handle is fixedly connected to one end of the movable rod.

[0011] Preferably, a first extension piece is fixedly connected to the bottom of the ash discharge port, a second positioning hole is opened on the surface of the first extension piece, a second bolt is movably connected to the inner wall of the second positioning hole, and a second nut is threadedly connected to the surface of the second bolt.

[0012] Preferably, a ash collection bucket is fixedly connected to the surface of the first extension piece, and a second extension piece is fixedly connected to the surface of the ash collection bucket.

[0013] The advantages of this utility model are:

[0014] This invention utilizes a flow guiding device to direct the inlet flue gas of a bag filter, preventing uneven dust distribution inside the purification chamber caused by eddies, which would otherwise reduce the purification effect. The device features a first positioning hole on the surface of an annular plate, which, combined with a first bolt and nut, allows for quick assembly and disassembly, facilitating subsequent maintenance. Sealing rings are installed at both ends of the tubular outer shell to prevent flue gas leakage. The flue gas flows through the flow guiding plate to the first air distribution plate, exits through ventilation holes on the surface of the first air distribution plate, and then passes through the second air distribution plate again, further enhancing the air distribution effect. The annular plate connecting the first and second air distribution plates is movably connected to the inner wall of the inlet pipe, allowing for quick alignment during installation and facilitating subsequent installation. This invention, by using a flow guiding device to intervene in the flow of flue gas, prevents eddies in the flue gas entering the purification chamber, thus avoiding excessive local dust concentrations within the purification chamber and solving the problem of excessive local dust concentrations caused by eddies within the purification chamber. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the mounting frame and cloth bag structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the flow guiding device of this utility model;

[0019] Figure 4 This is a cross-sectional view of the air guiding device and air intake pipe of this utility model;

[0020] Figure 5 This is a cross-sectional view of the ash discharge port of this utility model.

[0021] In the diagram: 1. Inlet pipe; 2. Flow guiding device; 201. Tubular outer shell; 202. First annular fixing plate; 203. First positioning hole; 204. First bolt; 205. First nut; 206. Sealing ring; 207. Flow guiding plate; 208. First air distribution plate; 209. Annular plate; 210. Second air distribution plate; 211. Ventilation hole; 3. Second annular fixing plate; 4. Purification box; 5. Support frame; 6. Mounting frame; 7. Filter bag; 8. Air collection hood; 9. Outlet pipe; 10. Ash discharge port; 11. Support block; 12. Movable rod; 13. Impeller; 14. Handle; 15. First extension plate; 16. Second positioning hole; 17. Second bolt; 18. Second nut; 19. Ash collection bucket; 20. Second extension plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0024] This application discloses a hazardous waste incineration flue gas purification device. (Refer to...) Figure 1 , Figure 2 and Figure 3 A hazardous waste incineration flue gas purification device includes an air inlet pipe 1, with a flow guide device 2 fixedly connected to the end of the air inlet pipe 1.

[0025] The airflow guiding device 2 includes a tubular outer shell 201. The end of the tubular outer shell 201 is fixedly connected to the air intake pipe 1. A first annular fixing plate 202 is fixedly connected to the end of the tubular outer shell 201. A first positioning hole 203 is formed on the surface of the first annular fixing plate 202. A first bolt 204 is movably connected to the inner wall of the first positioning hole 203. A first nut 205 is threaded onto the surface of the first bolt 204. A sealing ring 206 is fixedly connected to the end of the tubular outer shell 201. A guide plate 207 is fixedly connected to the inner wall of the tubular outer shell 201. A first air distribution plate 208 is fixedly connected to the end of the tubular outer shell 201. An annular plate 209 is fixedly connected to the surface of the first air distribution plate 208. A second air distribution plate 210 is fixedly connected to the surface of the annular plate 209. The first air distribution plate 208 and... The surface of the second air distribution plate 210 is provided with ventilation holes 211. The side of the annular plate 209 is movably connected to the inner wall of the air inlet pipe 1. By setting the first positioning hole 203 on the surface of the annular plate 209 and cooperating with the first bolt 204 and the first nut 205, the device can be quickly disassembled and assembled, which is convenient for subsequent maintenance. Both ends of the tubular shell 201 are provided with sealing rings 206 to prevent the flue gas from leaking out. The flue gas flows to the first air distribution plate 208 through the guide plate 207, and after being discharged from the ventilation holes 211 on the surface of the first air distribution plate 208, it passes through the second air distribution plate 210 again to enhance the air distribution effect. The annular plate 209 used to connect the first air distribution plate 208 and the second air distribution plate 210 is movably connected to the inner wall of the air inlet pipe 1, which can be quickly aligned during installation and facilitates subsequent installation.

[0026] Reference Figure 2 and Figure 4 The intake pipe 1 has two sections, and the flow guiding device 2 is located between the two sections of the intake pipe 1. The end face of the intake pipe 1 is fixedly connected with a second annular fixing plate 3. The second annular fixing plate 3 fixed to the end face of the intake pipe 1 has the same size and specifications as the first annular fixing plate 202 included in the flow guiding device 2, and has a hole corresponding to the first positioning hole 203 for alignment and installation.

[0027] Reference Figure 1 and Figure 4 A purification box 4 is fixedly connected to the surface of the air inlet pipe 1, a support frame 5 is fixedly connected to the surface of the purification box 4, and an installation frame 6 is fixedly connected to the top of the purification box 4; the installation frame 6 inside the purification box 4 is used to support the installation of the cloth bag 7, and the support frame 5 fixed to the surface of the purification box 4 is used to support and stabilize the purification box 4.

[0028] Reference Figure 1 and Figure 4The outlet of the mounting frame 6 extends to the outside of the purification box 4. A cloth bag 7 is fitted on the outside of the mounting frame 6. A gas collection hood 8 is fixedly connected to the top surface of the purification box 4. An exhaust pipe 9 is fixedly connected to the surface of the gas collection hood 8. The flue gas in the purification box 4 passes through the cloth bag 7, leaving the dust on the surface of the cloth bag 7. The filtered flue gas enters the interior of the mounting frame 6 and then enters the gas collection hood 8 from its top outlet. Finally, the flue gas is discharged through the exhaust pipe 9 fixed to the surface of the gas collection hood 8.

[0029] Reference Figure 1 and Figure 4 The bottom of the purification box 4 is provided with a dust discharge port 10. A support block 11 is fixedly connected to the surface of the dust discharge port 10. A movable rod 12 is fixedly connected to the inner wall of the support block 11. An impeller 13 is fixedly connected to the surface of the movable rod 12. A handle 14 is fixedly connected to one end of the movable rod 12. After the dust accumulated on the surface of the filter bag 7 is shaken off, it is concentrated in the dust discharge port 10 at the bottom of the purification box 4. The impeller 13 is set inside the dust discharge port 10. By turning the handle 14, the movable rod 12 can drive the impeller 13. By setting the impeller 13, the dust can be discharged evenly. At the same time, the rotation of the impeller 13 has a certain crushing ability for block dust, which can prevent dust accumulation and blockage.

[0030] Reference Figure 4 and Figure 5 The bottom of the ash discharge port 10 is fixedly connected to a first extension piece 15. A second positioning hole 16 is opened on the surface of the first extension piece 15. A second bolt 17 is movably connected to the inner wall of the second positioning hole 16. A second nut 18 is threadedly connected to the surface of the second bolt 17. By setting the second positioning hole 16 on the surface of the first extension piece 15, the second bolt 17 and the second nut 18 are used to facilitate the subsequent assembly and disassembly of the ash collection bucket 19.

[0031] Reference Figure 4 and Figure 5 The surface of the first extension piece 15 is fixedly connected to the ash collection bucket 19, and the surface of the ash collection bucket 19 is fixedly connected to the second extension piece 20; the specifications and dimensions of the second extension piece 20 are the same as those of the first extension piece 15, and corresponding holes are provided for mutual correspondence and assembly / disassembly.

[0032] Working Principle: When using this device, the operator first places the guide device 2 at the end of the air inlet pipe 1, inserts the annular plate 209 into the air inlet pipe 1 to complete the initial positioning, then rotates the guide device 2 to align the first annular fixing plate 202 with the second annular fixing plate 3, and completes the fixation by engaging the first bolt 204 and the first nut 205. Next, align the first extension plate 15 with the second extension plate 20, and complete the fixation of the ash discharge port 10 and the ash collection bucket 19 by engaging the second bolt 17 and the second nut 18. The flue gas generated by incineration forms fine dust after being adsorbed by activated carbon. The flue gas carrying the dust enters the guide device 2, is guided by the guide plate 207, and passes through the surface of the first air distribution plate 208. The air enters the air chamber between the first air distribution plate 208 and the second air distribution plate 210 through the ventilation port, and then enters the purification box 4 through the ventilation holes 211 on the surface of the second air distribution plate 210. After the flue gas is guided by the flow guiding device 2, the flue gas can be distributed more evenly in the purification box 4, which improves the utilization rate of the filter bag 7. The filtered flue gas enters the filter bag 7 and the interior of the mounting frame 6, and enters the gas collection hood 8 through the outlet at the top of the mounting frame 6. It is discharged through the gas outlet pipe 9 fixed on the surface of the gas collection hood 8. After subsequent denitrification and wet washing treatment, the flue gas can be discharged after passing the inspection. Finally, by turning the handle 14 to drive the movable rod 12 to drive the impeller 13, the dust falling off the surface of the filter bag 7 can be collected into the dust collection bucket 19.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A hazardous waste incineration flue gas purification device, comprising an air inlet pipe (1), characterized in that: The end of the air intake pipe (1) is fixedly connected to a flow guide device (2); The flow guiding device (2) includes a tubular outer shell (201), the end of which is fixedly connected to the air intake pipe (1). A first annular fixing plate (202) is fixedly connected to the end of the tubular outer shell (201). A first positioning hole (203) is provided on the surface of the first annular fixing plate (202). A first bolt (204) is movably connected to the inner wall of the first positioning hole (203). A first nut (205) is threaded onto the surface of the first bolt (204). A sealing device is fixedly connected to the end of the tubular outer shell (201). The inner wall of the tubular outer shell (201) is fixedly connected to a guide plate (207), the end of the tubular outer shell (201) is fixedly connected to a first air distribution plate (208), the surface of the first air distribution plate (208) is fixedly connected to an annular plate (209), the surface of the annular plate (209) is fixedly connected to a second air distribution plate (210), the surfaces of the first air distribution plate (208) and the second air distribution plate (210) are both provided with ventilation holes (211), and the side of the annular plate (209) is movably connected to the inner wall of the air inlet pipe (1).

2. The hazardous waste incineration flue gas purification equipment according to claim 1, characterized in that: The air intake pipe (1) has two sections, and the flow guiding device (2) is located between the two sections of the air intake pipe (1). A second annular fixing plate (3) is fixedly connected to the end face of the air intake pipe (1).

3. The hazardous waste incineration flue gas purification equipment according to claim 1, characterized in that: The air intake pipe (1) is fixedly connected to a purification box (4), the purification box (4) is fixedly connected to a support frame (5), and the top of the purification box (4) is fixedly connected to a mounting frame (6).

4. The hazardous waste incineration flue gas purification equipment according to claim 3, characterized in that: The outlet of the mounting bracket (6) extends to the outside of the purification box (4). A cloth bag (7) is fitted on the outside of the mounting bracket (6). A gas collection hood (8) is fixedly connected to the top surface of the purification box (4). An air outlet pipe (9) is fixedly connected to the surface of the gas collection hood (8).

5. The hazardous waste incineration flue gas purification equipment according to claim 4, characterized in that: The bottom of the purification box (4) is provided with a ash discharge port (10). A support block (11) is fixedly connected to the surface of the ash discharge port (10). A movable rod (12) is fixedly connected to the inner wall of the support block (11). An impeller (13) is fixedly connected to the surface of the movable rod (12). A handle (14) is fixedly connected to one end of the movable rod (12).

6. The hazardous waste incineration flue gas purification equipment according to claim 5, characterized in that: The bottom of the ash discharge port (10) is fixedly connected to a first extension piece (15), and a second positioning hole (16) is opened on the surface of the first extension piece (15). A second bolt (17) is movably connected to the inner wall of the second positioning hole (16), and a second nut (18) is threadedly connected to the surface of the second bolt (17).

7. The hazardous waste incineration flue gas purification equipment according to claim 6, characterized in that: A ash collection bucket (19) is fixedly connected to the surface of the first extension piece (15), and a second extension piece (20) is fixedly connected to the surface of the ash collection bucket (19).

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