A titanium dioxide production waste gas adsorption and purification device

Abstract

This utility model discloses an adsorption and purification device for waste gas from titanium dioxide production, specifically relating to the field of waste gas treatment technology. It includes a base plate, a spray tower mounted on the top left side of the base plate, a swinging mechanism on the right side of the spray tower, and a treatment box fixedly connected to the top right side of the base plate. Inside the treatment box, from bottom to top, are arranged a biological filter cotton layer, a quartz sand filter media layer, an activated carbon layer, and a filter plate. Fixing mechanisms are provided on both the left and right sides of the treatment box. A conveying mechanism is installed between the spray tower and the treatment box. The swinging mechanism includes a motor and two mounting plates, with the motor fixedly connected to the outer wall of the spray tower. This titanium dioxide production waste gas adsorption and purification device, through the swinging mechanism, achieves the reciprocating swing of the spray pipe, expanding the coverage area of ​​the spray liquid, avoiding the waste problem easily caused by traditional spraying, improving gas-liquid contact efficiency, and further enhancing the initial desulfurization and dust removal effect.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to an adsorption and purification device for waste gas from titanium dioxide production. Background Technology

[0002] The production of titanium dioxide generates waste gas containing various harmful substances such as dust, acidic gases (such as sulfuric acid mist), and organic pollutants. Direct emission of these waste gases would cause serious pollution to the atmospheric environment and harm human health. Therefore, these waste gases need to be purified before being emitted.

[0003] The existing technology has the following problems:

[0004] In existing technologies, spray towers are often used for preliminary desulfurization and dust removal in the purification of waste gas from titanium dioxide production. However, the spray pipes of traditional spray towers are mostly fixed structures. In order to ensure that the spray liquid covers the entire area, many nozzles are usually set up, which requires a lot of spray liquid, which may lead to waste of spray liquid and also increase the cost of subsequent treatment and maintenance. Utility Model Content

[0005] The main purpose of this utility model is to provide an adsorption and purification device for waste gas from titanium dioxide production, which can effectively solve the problem that in order to ensure the full coverage of the spray liquid, many nozzles are usually set up, which requires a lot of spray liquid, which may lead to waste of spray liquid and also increase the cost of subsequent treatment and maintenance.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A titanium dioxide production waste gas adsorption and purification device includes a base plate, a spray tower installed on the top left side of the base plate, a swing mechanism installed on the right side of the spray tower, a treatment box fixedly connected to the top right side of the base plate, and a biological filter cotton layer, a quartz sand filter material layer, an activated carbon layer and a filter plate arranged sequentially from bottom to top inside the treatment box. Fixing mechanisms are provided on both the left and right sides of the outside of the treatment box, and a conveying mechanism is installed between the spray tower and the treatment box.

[0008] The swing mechanism includes a motor and two mounting plates. The motor is fixedly connected to the outer wall of the spray tower. The left side of the mounting plate is fixedly connected to the right side of the spray tower. A cam is fixedly connected to the output end of the motor. A slide rod is fixedly connected to the front side of the mounting plate. A spring is sleeved on one side of the slide rod. A rack is slidably connected to the other side of the slide rod. A connecting plate is fixedly connected between the front sides of the two racks. A gear is meshed with the top of the rack. A spray pipe is fixedly connected to the left side of the gear. A sealed bearing is rotatably connected to the end of the spray pipe away from the gear.

[0009] The fixing mechanism includes a housing, the inner side of which is fixedly connected to the outer side of the processing box. An adjusting rod is slidably connected inside the housing. A spring is sleeved on one side of the adjusting rod, and a baffle is fixedly connected to the other side of the adjusting rod.

[0010] Preferably, the spray tower includes a collection shell, the bottom of which is fixedly connected to the top left side of the base plate, a tower body is fixedly connected to the top of the collection shell, a liquid supply pipe is fixedly connected to the top left side of the tower body, an air inlet pipe is fixedly connected to the bottom left side of the tower body, and a connecting pipe is fixedly connected to the top of the tower body. The tower body is provided with two packing layers and a gas-liquid separation layer from bottom to top.

[0011] Preferably, one end of the spring is fixedly connected to the front side of the mounting plate, and the other end of the spring is fixedly connected to the rear side of the rack.

[0012] Preferably, the end of the sealed bearing away from the spray pipe is connected to the outer periphery of the liquid supply pipe, and the outer side of the spray pipe is rotatably connected to the inside of the tower body.

[0013] Preferably, the outer side of the cam and the front side of the connecting plate abut against each other.

[0014] Preferably, one end of the second spring is fixedly connected to the inner wall of the outer casing, and the other end of the second spring is fixedly connected to the middle of the baffle.

[0015] Preferably, the outer side of the baffle is slidably connected to the inside of the housing, and one end of the adjusting rod passes through the housing and the processing box and is inserted into the inside of the filter plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This utility model provides a titanium dioxide production waste gas adsorption and purification device. The spray pipe is reciprocated by a swing mechanism, which expands the coverage of the spray liquid, avoids the waste caused by traditional spraying, improves the gas-liquid contact efficiency, and further improves the preliminary desulfurization and dust removal effect.

[0018] 2. This utility model provides an adsorption and purification device for waste gas from titanium dioxide production. The filter plates can be quickly disassembled and cleaned through a fixing mechanism, simplifying the replacement process and helping to maintain filtration efficiency. The entire process does not require special tools, is easy to operate, reduces downtime, and ensures the continuity of waste gas treatment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a side view of the external structure of the tower body of this utility model;

[0021] Figure 3This is a cross-sectional view of the internal structure of the spray tower of this utility model;

[0022] Figure 4 This is a side view of the external structure of the swing mechanism of this utility model;

[0023] Figure 5 This is a cross-sectional view of the internal structure of the processing box of this utility model;

[0024] Figure 6 This utility model Figure 5 Enlarged diagram of point A in the middle.

[0025] In the diagram: 1. Base plate; 2. Spray tower; 21. Collection shell; 22. Tower body; 23. Liquid supply pipe; 24. Air inlet pipe; 25. Connecting pipe; 26. Packing layer; 27. Gas-liquid separation layer; 3. Swinging mechanism; 31. Motor; 32. Mounting plate; 33. Cam; 34. Slide rod; 35. Spring 1; 36. Rack; 37. Connecting plate; 38. Gear; 39. Spray pipe; 310. Sealed bearing; 4. Treatment box; 5. Biological filter cotton layer; 6. Quartz sand filter media layer; 7. Activated carbon layer; 8. Filter plate; 9. Fixing mechanism; 91. Outer shell; 92. Adjusting rod; 93. Spring 2; 94. Baffle; 10. Conveying mechanism. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figures 1-6 As shown, a titanium dioxide production waste gas adsorption and purification device includes a base plate 1, a spray tower 2 installed on the top left side of the base plate 1, a swing mechanism 3 installed on the right side of the spray tower 2, a treatment box 4 fixedly connected to the top right side of the base plate 1, and a biological filter cotton layer 5, a quartz sand filter material layer 6, an activated carbon layer 7 and a filter plate 8 arranged sequentially from bottom to top inside the treatment box 4. Fixing mechanisms 9 are provided on both the left and right sides of the outside of the treatment box 4, and a conveying mechanism 10 is installed between the spray tower 2 and the treatment box 4.

[0028] The swing mechanism 3 includes a motor 31 and two mounting plates 32. The motor 31 is fixedly connected to the outer wall of the spray tower 2. The left side of the mounting plate 32 is fixedly connected to the right side of the spray tower 2. A cam 33 is fixedly connected to the output end of the motor 31. A slide rod 34 is fixedly connected to the front side of the mounting plate 32. A spring 35 is sleeved on one side of the slide rod 34. A rack 36 is slidably connected to the other side of the slide rod 34. A connecting plate 37 is fixedly connected between the front sides of the two racks 36. A gear 38 is meshed with the top of the rack 36. A spray pipe 39 is fixedly connected to the left side of the gear 38. A sealed bearing 310 is rotatably connected to the end of the spray pipe 39 away from the gear 38.

[0029] It should be noted that after the motor 31 starts, the output end drives the cam 33 to rotate. The protruding end of the cam 33 periodically abuts against the front side of the connecting plate 37, pushing the connecting plate 37 to move through mechanical compression. Since the two racks 36 are fixedly connected through the connecting plate 37, the connecting plate 37 will synchronously drive the two racks 36 to slide along the slide rod 34. The slide rod 34 provides a stable sliding guide for the racks 36 to prevent them from deviating. When the protruding end of the cam 33 presses against the connecting plate 37, the rack 36 slides along the slide rod 34 in a direction away from the mounting plate 32, while compressing the spring 35 sleeved outside the slide rod 34, causing the spring 35 to store elastic potential energy. When the protruding end of the cam 33 rotates to disengage from the connecting plate 37, the spring 35 releases its elastic potential energy, pushing the rack 36 to slide back along the slide rod 34 and reset. The connecting plate 37 is driven back to its initial position, forming the reciprocating sliding motion of the rack 36. The rack 36 and the gear 38 are meshed. The reciprocating sliding of the rack 36 will be converted into the clockwise and counterclockwise alternating rotation of the gear 38. Since the spray pipe 39 is fixedly connected to the left side of the gear 38, the rotation of the gear 38 will synchronously drive the spray pipe 39 to rotate inside the spray tower 2. At the same time, the end of the spray pipe 39 away from the gear 38 is connected to the liquid supply pipe 23 through the sealed bearing 310. The sealed bearing 310 ensures the sealing of the spray pipe 39 when it rotates (preventing the leakage of spray liquid) and does not affect the continuous supply of spray liquid from the liquid supply pipe 23 to the spray pipe 39. Finally, the spray pipe 39 is stably oscillating, ensuring that the spray liquid is evenly sprayed inside the spray tower 2 and fully contacts and reacts with the rising exhaust gas.

[0030] The fixing mechanism 9 includes a housing 91, the inner side of which is fixedly connected to the outer side of the processing box 4. An adjusting rod 92 is slidably connected inside the housing 91. A spring 93 is sleeved on one side of the adjusting rod 92, and a baffle 94 is fixedly connected to the other side of the adjusting rod 92.

[0031] It should be noted that when the filter plate 8 needs to be disassembled for cleaning, simply pull the adjusting rod 92 outward. The adjusting rod 92 will cause the baffle 94 to slide away from the treatment box 4. At this time, the second spring 93 is compressed and stores elastic potential energy. When the end of the adjusting rod 92 inserted into the treatment box 4 is completely disengaged from the limiting hole of the filter plate 8, it can be removed through the handle of the filter plate 8. After maintenance is completed, the filter plate 8 is placed back into the slot in the treatment box 4, the adjusting rod 92 is released, the second spring 93 releases elastic potential energy to push the baffle 94 to reset, so that the adjusting rod 92 is reinserted into the limiting hole of the filter plate 8 to complete the fixation. The whole process does not require special tools, and the operation is efficient and stable.

[0032] like Figure 3As shown, the spray tower 2 includes a collection shell 21. The bottom of the collection shell 21 is fixedly connected to the top left side of the base plate 1. The top of the collection shell 21 is fixedly connected to the tower body 22. The top left side of the tower body 22 is fixedly connected to the liquid supply pipe 23. The bottom left side of the tower body 22 is fixedly connected to the air inlet pipe 24. The top of the tower body 22 is fixedly connected to the connecting pipe 25. The tower body 22 has two packing layers 26 and a gas-liquid separation layer 27 arranged sequentially from bottom to top.

[0033] It should be noted that the bottom of the collection shell 21 is fixed to the top left side of the base plate 1, providing stable support for the entire spray tower 2. At the same time, it forms a closed cavity inside to receive the spray waste liquid (including neutralization reaction products and trapped dust) falling from the tower body 22. The side wall and top of the tower body 22 are respectively equipped with an air inlet pipe 24, a liquid supply pipe 23, and a connecting pipe 25 to realize the fluid path of waste gas in, spray liquid in, and purified gas out. The internal packing layer 26 and gas-liquid separation layer 27 are responsible for reaction enhancement and gas-liquid separation, respectively. The key function of the system is that the liquid supply pipe 23 is fixed to the left side of the top of the tower body 22. One end is connected to an external alkaline spray liquid (such as sodium hydroxide solution) supply system, and the other end is connected to the spray pipe 39 through a sealed bearing 310, continuously supplying the spray liquid for neutralizing acid mist to the spray pipe 39 without affecting the swing of the spray pipe 39. The air inlet pipe 24 is fixed to the left side of the bottom of the tower body 22. One end is connected to the waste gas emission source of titanium dioxide production. Under the negative pressure of the external fan, the waste gas is introduced into the interior of the tower body 22, and the waste gas flows upward from the bottom of the tower. The sprayed liquid forms a counter-current contact with the downward spray, improving reaction efficiency. Connecting pipe 25 is fixed to the top of tower body 22, with one end connected to the interior of tower body 22 and the other end connected to an external fan or subsequent treatment unit. It is used to exhaust the purified gas after spraying and gas-liquid separation, ensuring that the treated waste gas meets emission standards. When the waste gas rises and passes through the packing layer 26, a thin liquid film forms on the surface of the packing. Acidic substances in the waste gas fully neutralize with the liquid film, while dust is trapped by the packing, completing the pretreatment of the waste gas. (Two packing layers...) The design can further extend the gas-liquid contact path and improve the pretreatment effect. The gas-liquid separation layer 27 is set at the top of the tower body 22 and below the connecting pipe 25. It usually adopts a baffle plate or wire mesh demister structure to intercept the fine water mist entrained in the gas after spraying. When the mist-containing gas flows through the gas-liquid separation layer 27, the water mist will condense into large water droplets on the surface of the separation structure and fall to the collection shell 21 under the action of gravity, thus preventing the water mist from entering the connecting pipe 25 with the purified gas, which would cause fan corrosion or water accumulation in the subsequent pipeline.

[0034] like Figure 4 As shown, one end of spring 35 is fixedly connected to the front side of mounting plate 32, and the other end of spring 35 is fixedly connected to the rear side of rack 36.

[0035] It should be noted that this is the core elastic support that enables the rack 36 to reciprocate and slide.

[0036] like Figure 4 As shown, the end of the sealed bearing 310 away from the spray pipe 39 is connected to the outer periphery of the liquid supply pipe 23, and the outer side of the spray pipe 39 is rotatably connected to the inside of the tower body 22.

[0037] It should be noted that the sealing bearing 310 has both rotational support and sealing functions. Its fixed connection with the outer periphery of the liquid supply pipe 23 ensures that the spray liquid in the liquid supply pipe 23 can flow stably into the spray pipe 39, while preventing the spray liquid from leaking from the connection point during the rotation of the spray pipe 39, thus ensuring the effective utilization rate of the spray liquid. The rotational connection between the outer side of the spray pipe 39 and the inside of the tower body 22 provides an additional radial support point for the spray pipe 39. Combined with the axial positioning of the sealing bearing 310, the spray pipe 39 will not have radial offset or shaking when it rotates under the drive of the gear 38, ensuring the stability of the swing trajectory of the spray pipe 39. The spray liquid can evenly cover the internal cross-section of the tower body 22, improving the gas-liquid contact efficiency.

[0038] like Figure 4 As shown, the outer side of the cam 33 and the front side of the connecting plate 37 abut against each other.

[0039] It should be noted that this allows the cam 33 to intermittently push the connecting plate 37.

[0040] like Figure 6 As shown, one end of spring 93 is fixedly connected to the inner wall of the outer casing 91, and the other end of spring 93 is fixedly connected to the middle of the baffle 94.

[0041] It should be noted that spring 2 93 provides elastic force for the baffle 94 to reset.

[0042] like Figure 5 and Figure 6 As shown, the outer side of the baffle 94 is slidably connected to the inside of the housing 91, and one end of the adjusting rod 92 passes through the housing 91 and the treatment box 4 and is inserted into the inside of the filter plate 8.

[0043] It should be noted that the sliding connection between the outer side of the baffle 94 and the inside of the housing 91 provides axial guidance for the movement of the adjusting rod 92, ensuring that the adjusting rod 92 always moves in a straight line when pulled or reset, avoiding the adjusting rod 92 from being unable to align with the limiting hole of the filter plate 8 due to offset, ensuring the smoothness of the disassembly and assembly process, and enabling the filter plate 8 to be installed stably by the adjusting rod 92.

[0044] Working principle: In use, first connect the inlet pipe 24 to the exhaust gas source, connect the connecting pipe 25 to the external fan, and connect the liquid supply pipe 23 to the external liquid supply system. Using the fan to generate negative pressure, the exhaust gas generated during titanium dioxide production is introduced into the tower body 22 of the spray tower 2 through the inlet pipe 24. When the acid mist exhaust gas enters from the inlet pipe 24 at the bottom of the tower body 22, the exhaust gas rises to the packing layer 26 and reacts chemically with the packing layer 26. The incompletely purified exhaust gas rises to below the swing mechanism 3. By starting the motor 31 of the swing mechanism 3, the motor... 31 drives cam 33 to rotate, cam 33 presses against connecting plate 37, causing two racks 36 to slide backward along slide rod 34 and compress spring 35. Racks 36 mesh with gear 38, driving spray pipe 39 to rotate clockwise. When the protruding end of cam 33 disengages from connecting plate 37, spring 35 resets and pushes rack 36 forward, thereby driving spray pipe 39 to rotate counterclockwise, realizing the reciprocating oscillation of spray pipe 39. Spray liquid is transported into spray pipe 39 through supply pipe 23 and sprayed out. Gas and liquid collide, spray liquid comes into contact with and mixes with waste gas, and the treated gas... The gas is discharged in compliance with standards through the connecting pipe 25. After the spray liquid comes into contact with the exhaust gas, the exhaust gas is coated with water droplets. The water droplets that are coated with pollutants collide again, increasing their surface area and gravity. Under the influence of gravity, the water droplets coated with pollutants fall into the collection shell 21 at the bottom of the spray tower 2. The used spray liquid is transported to the treatment tank 4 through the conveying mechanism 10. It flows downward from the top of the treatment tank 4, and passes through the filter plate 8, the activated carbon layer 7 to adsorb organic pollutants and residual harmful gases, the quartz sand filter layer 6, and the biological filter cotton layer 5 to filter fine dust, and is finally purified. The waste liquid is discharged through the discharge pipe of the treatment box 4 to avoid environmental pollution. When the filter plate 8 needs to be cleaned, pull the adjusting rod 92 of the fixing mechanism 9 on both sides of the treatment box 4 outward. The adjusting rod 92 drives the baffle 94 to slide outward of the outer shell 91, and the second spring 93 is compressed until the adjusting rod 92 is disengaged from the filter plate 8. The filter plate 8 can be taken out through the handle of the filter plate 8. After cleaning, put the filter plate 8 back into the treatment box 4, release the adjusting rod 92, and the second spring 93 will reset and push the adjusting rod 92 through the treatment box 4 and insert it into the filter plate 8 to complete the fixation. Then the waste gas purification operation can continue.

[0045] 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A titanium dioxide production waste gas adsorption and purification device, comprising a base plate (1), characterized in that: A spray tower (2) is installed on the top left side of the base plate (1), and a swing mechanism (3) is provided on the right side of the spray tower (2). A treatment box (4) is fixedly connected to the top right side of the base plate (1). The treatment box (4) is provided with a biological filter cotton layer (5), a quartz sand filter material layer (6), an activated carbon layer (7), and a filter plate (8) from bottom to top. Fixing mechanisms (9) are provided on both the left and right sides of the outside of the treatment box (4). A conveying mechanism (10) is installed between the spray tower (2) and the treatment box (4). The swing mechanism (3) includes a motor (31) and two mounting plates (32). The motor (31) is fixedly connected to the outer wall of the spray tower (2) on the outside. The mounting plate (32) is fixedly connected to the right side of the spray tower (2) on the left side. A cam (33) is fixedly connected to the output end of the motor (31). A slide rod (34) is fixedly connected to the front side of the mounting plate (32). A spring (35) is sleeved on one side of the slide rod (34). A rack (36) is slidably connected to the other side of the slide rod (34). A connecting plate (37) is fixedly connected between the front sides of the two racks (36). A gear (38) is meshed with the top of the rack (36). A spray pipe (39) is fixedly connected to the left side of the gear (38). A sealed bearing (310) is rotatably connected to the end of the spray pipe (39) away from the gear (38). The fixing mechanism (9) includes a housing (91), the inner side of which is fixedly connected to the outer side of the processing box (4), and an adjusting rod (92) is slidably connected inside the housing (91). A spring (93) is sleeved on one side of the adjusting rod (92), and a baffle (94) is fixedly connected to the other side of the adjusting rod (92).

2. The titanium dioxide production waste gas adsorption and purification device according to claim 1, characterized in that: The spray tower (2) includes a collection shell (21), the bottom of which is fixedly connected to the top left side of the base plate (1), the top of which is fixedly connected to a tower body (22), the top left side of which is fixedly connected to a liquid supply pipe (23), the bottom left side of which is fixedly connected to an air inlet pipe (24), the top of which is fixedly connected to a connecting pipe (25), and the inside of the tower body (22) is provided with two packing layers (26) and a gas-liquid separation layer (27) from bottom to top.

3. The titanium dioxide production waste gas adsorption and purification device according to claim 1, characterized in that: One end of the spring (35) is fixedly connected to the front side of the mounting plate (32), and the other end of the spring (35) is fixedly connected to the rear side of the rack (36).

4. The titanium dioxide production waste gas adsorption and purification device according to claim 2, characterized in that: The sealed bearing (310) is connected to the outer periphery of the liquid supply pipe (23) at the end away from the spray pipe (39), and the outer side of the spray pipe (39) is rotatably connected to the inside of the tower body (22).

5. The titanium dioxide production waste gas adsorption and purification device according to claim 1, characterized in that: The outer side of the cam (33) and the front side of the connecting plate (37) abut against each other.

6. The titanium dioxide production waste gas adsorption and purification device according to claim 1, characterized in that: One end of the second spring (93) is fixedly connected to the inner wall of the outer shell (91), and the other end of the second spring (93) is fixedly connected to the middle of the baffle (94).

7. The titanium dioxide production waste gas adsorption and purification device according to claim 1, characterized in that: The outer side of the baffle (94) is slidably connected to the inside of the outer shell (91), and one end of the adjusting rod (92) passes through the outer shell (91) and the processing box (4) and is inserted into the inside of the filter plate (8).

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