Metallic chromium smelting waste gas treatment device

Abstract

The utility model discloses a chromium metal smelting waste gas treatment device, which belongs to the technical field of smelting waste gas treatment and comprises a treatment box, a filtering mechanism and a watering mechanism are arranged on the treatment box, one end of the treatment box is fixedly sleeved with a gas inlet pipe, and the other end of the treatment box is fixedly sleeved with a detection pipe. A sulfur dioxide detector is arranged on the inner wall of the detection pipe. According to the utility model, the sulfur dioxide detector in the detection pipe is used for detecting the content of sulfur dioxide in the treated waste gas, when the content of sulfur dioxide is too high, the three-way electric control valve is used for guiding the gas discharged by the detection pipe back to the treatment box through the gas return pipe to be continuously treated, and when the content of sulfur dioxide reaches the emission standard, the gas is discharged. The three-way electric control valve is controlled to discharge the waste gas from the drainage pipe, so that the function of completely treating the smelting waste gas is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of smelting waste gas treatment, and more specifically to a smelting waste gas treatment device for metal chromium. Background Art

[0002] Metal smelting is the process of changing metal from a combined state to a free state. Reducing agents such as carbon, carbon monoxide, and hydrogen react with metal oxides at high temperatures to obtain metal elements. During the smelting process of metallic chromium, the smelting equipment will produce a large amount of waste gas. Generally, the waste gas contains gases such as carbon monoxide and sulfur dioxide. Direct discharge to the outside can easily cause environmental pollution.

[0003] After searching, the utility model patent with announcement number CN218687914U discloses a metal chromium smelting waste gas treatment device, including a treatment box, installation ports are arranged on opposite sides of the top of the treatment box, activated carbon plates are arranged inside the two installation ports, and an installation mechanism is arranged between the activated carbon plates and the installation ports. A spray chamber is arranged in the middle of the treatment box, and a spray mechanism is arranged inside the spray chamber. The installation mechanism includes a fixed plate, a mounting frame, a sealing plate and a telescopic spring. The spray mechanism includes a spray pipe, an atomizing nozzle, a water collecting box, a duct and a circulating pump. The patent facilitates the replacement of the activated carbon plate through the installation mechanism and the spray mechanism, is easy to use, and is convenient for recycling water resources to avoid wasting water resources.

[0004] However, the above patents still have the following shortcomings: it is not convenient to control the removal of pollutants in the exhaust gas after the exhaust gas is treated, and the pollutants are not treated thoroughly; in addition, the replacement of the activated carbon plate requires shutdown, which affects the continuity of the exhaust gas treatment. For this reason, we propose a chromium smelting exhaust gas treatment device. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a chromium smelting waste gas treatment device.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A smelting waste gas treatment device for metallic chromium comprises a treatment box, a filtering mechanism is provided on the treatment box, a watering mechanism is provided on the treatment box, an air intake pipe is fixedly sleeved on one end of the treatment box, a detection tube is fixedly sleeved on the other end of the treatment box, a sulfur dioxide detector is provided on the inner wall of the detection tube, a three-way electric control valve is fixedly sleeved on the end of the detection tube, a drain pipe is fixedly sleeved on one end of the three-way electric control valve, a return air pipe is fixedly sleeved on the top end of the three-way electric control valve, one end of the return air pipe extends to the inner cavity of the treatment box, and a controller is fixedly installed on the front of the treatment box.

[0008] As a preferred solution of the utility model, the filtering mechanism includes two first extraction holes and two second extraction holes opened on the side of the processing box, the two first extraction holes are respectively provided with a first filter frame, the two second extraction holes are respectively provided with a second filter frame, the inner sides of the first filter frame and the second filter frame are both provided with activated carbon plates, one end of the first filter frame and the second filter frame are respectively provided with screw holes, four screws are threadedly sleeved on the back side of the processing box, the ends of the screws are threadedly installed in the inner cavity of the screw holes, and the top surface and bottom surface of the first filter frame and the second filter frame are respectively in contact with the inner wall of the processing box.

[0009] As a preferred solution of the utility model, the sprinkler mechanism includes a water pump fixedly installed on the back of the treatment box and a water tank fixedly connected to the middle of the inner cavity of the treatment box, and both ends of the water pump are fixedly connected with water pumping pipes, one end of one of the water pumping pipes extends to the inner cavity of the water tank, and one end of the other water pumping pipe extends to the inner cavity of the treatment box and is fixedly connected with a water distribution pipe, and a plurality of atomizing nozzles are fixedly installed on the bottom surface of the water distribution pipe.

[0010] As a preferred solution of the utility model, the top and bottom surfaces of the inner cavity of the processing box are both provided with slide grooves, and one end of the first filter frame and the second filter frame is provided with a slider, and the end of the slider is movably connected to the inner cavity of the slide groove.

[0011] As a preferred solution of the present invention, the other ends of the first filter frame and the second filter frame both extend to the outside of the processing box and are fixedly provided with handles.

[0012] As a preferred solution of the utility model, a drain valve is fixedly installed on the front of the processing box, and one end of the drain valve extends to the inner cavity of the water tank.

[0013] As a preferred solution of the utility model, a holder is provided on both sides of the first filter frame and the second filter frame respectively.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) In the utility model, a sulfur dioxide detector in a detection tube is used to detect the sulfur dioxide content in the treated exhaust gas. When the sulfur dioxide content is too high, a three-way electric control valve is used to guide the gas discharged from the detection tube back to the treatment box through the return pipe for further treatment. When the sulfur dioxide content reaches the emission standard, the three-way electric control valve is controlled to discharge the exhaust gas from the drain pipe, thereby realizing the function of completely treating the smelting exhaust gas and having good practicality.

[0016] (2) In the utility model, two first filter frames and two second filter frames are arranged in the treatment box, and activated carbon plates are arranged on the inner sides of the first filter frames and the second filter frames. When the exhaust gas is treated, the exhaust gas is purified only by the activated carbon plates on the two first filter frames or the two second filter frames, so that the activated carbon plates can be replaced by pulling the first filter frames or the second filter frames at intervals, so as to ensure that the activated carbon plates can be replaced during the exhaust gas treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is an exploded view of the overall structure of the utility model;

[0019] Figure 3 It is a cross-sectional schematic diagram of the processing box of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the processing box of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the first filter frame of the utility model.

[0022] Description of the numbers in the figure:

[0023] 1. Treatment box; 2. Filter mechanism; 3. Sprinkler mechanism; 4. Air inlet pipe; 5. Detection tube; 6. Sulfur dioxide detector; 7. Three-way electric control valve; 8. Drain pipe; 9. Return air pipe; 10. Controller; 11. First extraction hole; 12. Second extraction hole; 13. First filter frame; 14. Second filter frame; 15. Activated carbon plate; 16. Screw hole; 17. Screw; 18. Handle; 19. Holder; 20. Slider; 21. Slide; 22. Water tank; 23. Water pump; 24. Suction pipe; 25. Water distribution pipe; 26. Atomizing nozzle; 27. Drain valve. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Example:

[0028] See also Figure 1-5 A smelting waste gas treatment device for metallic chromium comprises a treatment box 1, a filtering mechanism 2 is arranged on the treatment box 1, a watering mechanism 3 is arranged on the treatment box 1, an air intake pipe 4 is fixedly sleeved on one end of the treatment box 1, a detection tube 5 is fixedly sleeved on the other end of the treatment box 1, a sulfur dioxide detector 6 is arranged on the inner wall of the detection tube 5, a three-way electric control valve 7 is fixedly sleeved on the end of the detection tube 5, a drain pipe 8 is fixedly sleeved on one end of the three-way electric control valve 7, a return air pipe 9 is fixedly sleeved on the top end of the three-way electric control valve 7, one end of the return air pipe 9 extends to the inner cavity of the treatment box 1, and a controller 10 is fixedly installed on the front of the treatment box 1.

[0029] In this embodiment, a plurality of sensors for detecting different gas contents may be installed in the detection tube 5 .

[0030] For details, please refer to Figures 1 to 5 The filtering mechanism 2 includes two first extraction holes 11 and two second extraction holes 12 opened on the side of the processing box 1, the two first extraction holes 11 are respectively sleeved with a first filter frame 13, and the two second extraction holes 12 are respectively sleeved with a second filter frame 14, and the inner sides of the first filter frame 13 and the second filter frame 14 are both provided with an activated carbon plate 15, and one end of the first filter frame 13 and the second filter frame 14 are respectively provided with a screw hole 16, and four screws 17 are threadedly sleeved on the back of the processing box 1, and the end of the screw 17 is threadedly installed in the inner cavity of the screw hole 16, and the top surface and the bottom surface of the first filter frame 13 and the second filter frame 14 are respectively in contact with the inner wall of the processing box 1.

[0031] In this embodiment, the first filter frame 13 and the second filter frame 14 located in the processing box 1 are fixed by using the cooperation between the screws 17 and the screw holes 16 .

[0032] For details, please refer to Figure 1 , Figure 3 and Figure 4 The sprinkler mechanism 3 includes a water pump 23 fixedly installed on the back of the treatment box 1 and a water tank 22 fixedly connected to the middle of the inner cavity of the treatment box 1. The two ends of the water pump 23 are respectively fixedly connected with water pumping pipes 24. One end of one water pumping pipe 24 extends to the inner cavity of the water tank 22, and one end of the other water pumping pipe 24 extends to the inner cavity of the treatment box 1 and is fixedly connected with a water distribution pipe 25. A plurality of atomizing nozzles 26 are fixedly installed on the bottom surface of the water distribution pipe 25.

[0033] In this embodiment, the inner cavity of the water tank 22 is provided with water, and the watering mechanism 3 is provided with a mechanism for filtering metal particles to prevent the metal particles from clogging the water pump 23 and the atomizing nozzle 26. This is the prior art.

[0034] For details, please refer to Figure 2 , Figure 3 and Figure 5 A slide groove 21 is provided on the top and bottom surfaces of the inner cavity of the processing box 1 , and a slider 20 is provided at one end of the first filter frame 13 and the second filter frame 14 , and the end of the slider 20 is movably sleeved into the inner cavity of the slide groove 21 .

[0035] In this embodiment, the first filter frame 13 and the second filter frame 14 are limited by the cooperation of the slide groove 21 and the slider 20 to prevent the first filter frame 13 and the second filter frame 14 from being completely pulled out of the inner cavity of the processing box 1, and to ensure that after the first filter frame 13 and the second filter frame 14 are pulled out, the first extraction hole 11 and the second extraction hole 12 can be blocked by the inner side ends of the first filter frame 13 and the second filter frame 14.

[0036] For details, please refer to Figure 2 The other ends of the first filter frame 13 and the second filter frame 14 extend to the outside of the processing box 1 and are fixedly mounted with a handle 18 .

[0037] In this embodiment, the first filter frame 13 and the second filter frame 14 are pulled by the handle 18 .

[0038] For details, please refer to Figure 1 and Figure 3 A drain valve 27 is fixedly installed on the front of the processing box 1, and one end of the drain valve 27 extends to the inner cavity of the water tank 22.

[0039] In this embodiment, the waste water in the water tank 22 is discharged through the drain valve 27.

[0040] For details, please refer to Figure 5 , a holder 19 is provided on both sides of the first filter frame 13 and the second filter frame 14 respectively.

[0041] In this embodiment, the activated carbon plate 15 is fixed in the first filter frame 13 and the second filter frame 14 by using the holder 19 .

[0042] Working principle: when in use, first, the waste gas generated by the smelting of metal chromium is introduced into the treatment box 1 from the air inlet pipe 4, and the activated carbon plate 15 located in the first filter frame 13 or the second filter frame 14 in the treatment box 1 is used to adsorb sulfur dioxide and other gases in the waste gas. In addition, the water pump 23 is started to make the water in the water tank 22 be introduced into the water distribution pipe 25 from the water pumping pipe 24, and the water in the water distribution pipe 25 is atomized and sprayed out from the atomizing nozzle 26, and the metal particles in the waste gas are sprayed with water mist to remove the metal particles in the waste gas. Then, the water in the treatment box 1 is discharged by the detection tube 5, and the sulfur dioxide content in the gas is detected by the sulfur dioxide detector 6. When the sulfur dioxide content is too high, the waste gas is guided back to the front of the treatment box 1 through the three-way electric control valve 7 and the return pipe 9, so that the waste gas is processed again. When the sulfur content reaches the emission standard, the three-way electric control valve 7 is used to control the exhaust gas to be discharged from the drain pipe 8. Finally, when the activated carbon plate 15 in the first filter frame 13 is replaced, the second filter frame 14 is pushed into the inner cavity of the treatment box 1, and the activated carbon plate 15 in the second filter frame 14 is used to treat the exhaust gas, and the first filter frame 13 is pulled out from the front of the treatment box 1 to replace the activated carbon plate 15 in the first filter frame 13. When the activated carbon plate 15 in the second filter frame 14 is replaced, the first filter frame 13 is pushed into the inner cavity of the treatment box 1, and the activated carbon plate 15 in the first filter frame 13 is used to treat the exhaust gas, and the second filter frame 14 is pulled out from the front of the treatment box 1 to replace the activated carbon plate 15 in the second filter frame 14, so as to ensure that the exhaust gas treatment will not be interrupted when the activated carbon plate 15 is replaced.

[0043] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A chromium metal smelting waste gas treatment device, comprising a treatment box (1), characterized in that: The treatment box (1) is provided with a filtering mechanism (2), the treatment box (1) is provided with a watering mechanism (3), one end of the treatment box (1) is fixedly sleeved with an air intake pipe (4), the other end of the treatment box (1) is fixedly sleeved with a detection tube (5), the inner wall of the detection tube (5) is provided with a sulfur dioxide detector (6), the end of the detection tube (5) is fixedly sleeved with a three-way electric control valve (7), one end of the three-way electric control valve (7) is fixedly sleeved with a drain pipe (8), the top end of the three-way electric control valve (7) is fixedly sleeved with a return air pipe (9), one end of the return air pipe (9) extends to the inner cavity of the treatment box (1), and a controller (10) is fixedly installed on the front of the treatment box (1).

2. The chromium smelting waste gas treatment device according to claim 1, characterized in that: The filtering mechanism (2) comprises two first extraction holes (11) and two second extraction holes (12) provided on the side of the treatment box (1); a first filter frame (13) is respectively sleeved in the two first extraction holes (11); a second filter frame (14) is respectively sleeved in the two second extraction holes (12); an activated carbon plate (15) is arranged inside the first filter frame (13) and the second filter frame (14); screw holes (16) are respectively arranged at one end of the first filter frame (13) and the second filter frame (14); four screws (17) are threadedly sleeved on the back of the treatment box (1); the ends of the screws (17) are threadedly mounted in the inner cavity of the screw holes (16); the top surface and the bottom surface of the first filter frame (13) and the second filter frame (14) are respectively in contact with the inner wall of the treatment box (1).

3. The chromium smelting waste gas treatment device according to claim 2, characterized in that: The watering mechanism (3) comprises a water pump (23) fixedly mounted on the back of the treatment box (1) and a water tank (22) fixedly connected to the middle of the inner cavity of the treatment box (1), the two ends of the water pump (23) are respectively fixedly connected to water pumping pipes (24), one end of one of the water pumping pipes (24) extends to the inner cavity of the water tank (22), and the other end of the water pumping pipe (24) extends to the inner cavity of the treatment box (1) and is fixedly connected to a water distribution pipe (25), and a plurality of atomizing nozzles (26) are fixedly mounted on the bottom surface of the water distribution pipe (25).

4. The chromium smelting waste gas treatment device according to claim 2, characterized in that: The top and bottom surfaces of the inner cavity of the processing box (1) are both provided with a slide groove (21), and one end of the first filter frame (13) and the second filter frame (14) is provided with a slider (20), and the end of the slider (20) is movably sleeved into the inner cavity of the slide groove (21).

5. The device for treating waste gas from smelting of metallic chromium according to claim 2, characterized in that: The other ends of the first filter frame (13) and the second filter frame (14) both extend to the outside of the processing box (1) and are fixedly provided with a handle (18).

6. The device for treating waste gas from smelting of metallic chromium according to claim 1, characterized in that: A drain valve (27) is fixedly mounted on the front of the treatment box (1), and one end of the drain valve (27) extends to the inner cavity of the water tank (22).

7. The device for treating waste gas from smelting of metallic chromium according to claim 2, characterized in that: Sockets (19) are respectively provided on both sides of the first filter frame (13) and the second filter frame (14).

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