A filter adsorption device for industrial waste gas treatment

Abstract

The utility model belongs to waste gas treatment technical field relates to a kind of filtering adsorption devices for industrial waste gas treatment, including first sealing plate, second sealing plate and the filtering pipe of inner and outer layer suit distribution, first cylinder, second cylinder and third cylinder;The first cylinder, second cylinder are all screen pipe structure, and adsorption layer is provided between the two;The lateral wall of third cylinder is provided with gas outlet pipe;First sealing plate and second sealing plate are bolted respectively in the both ends of third cylinder;Filtering pipe, first cylinder and the one end of second cylinder are all fixed on first sealing plate, and the other end is all closely contacted with the lateral wall of second sealing plate and forms seal, and second sealing is provided with air inlet pipe.This filtering adsorption device is tubular structure, can be installed in the gas pipeline of industrial waste gas source place nearby for filtering adsorption pretreatment to industrial waste gas, can reduce the content of particulate matter and VOCs harmful gas in industrial waste gas, to reduce pipeline damage in gas transmission process.

Description

Technical Field

[0001] This utility model belongs to the technical field of industrial waste gas purification equipment, specifically relating to a filtration and adsorption device for industrial waste gas treatment. Background Technology

[0002] Industrial waste gas often contains harmful gases such as SO2, NOx, VOCs, benzene compounds, and chlorides, as well as particulate matter. Direct emission of these substances will seriously damage the ecological environment and harm human health. Therefore, industrial waste gas needs to be treated with strict filtration and adsorption measures before it can be discharged.

[0003] Industrial waste gas contains particulate matter and harmful gases. The treatment methods for the two are different. Particulate matter is usually pretreated by filtration, while most VOCs harmful gases such as benzene, toluene, alkanes, and odors need to be treated by adsorption. Since particulate matter can clog and contaminate subsequent adsorbents or treatment equipment, existing treatment devices generally remove particulate matter from the waste gas first, and then use adsorbents such as activated carbon to adsorb harmful gases.

[0004] Existing industrial waste gas filtration and adsorption devices are generally box-type or tower-type structures, which are large in size and suitable for centralized treatment of industrial waste gas. However, they also occupy a lot of space. When industrial waste gas is transported to the treatment equipment through pipelines for centralized treatment, the particulate matter and VOCs in the gas may damage the protective layer of the inner wall of the pipeline and cause local corrosion and pitting of the pipeline during the transportation process. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model proposes a filtration and adsorption device for industrial waste gas treatment. It is installed on the gas transmission pipeline near the source of industrial waste gas to perform filtration and adsorption pretreatment of industrial waste gas, thereby reducing the damage to the pipeline caused by particulate matter and VOCs harmful gases in the industrial waste gas during transportation.

[0006] This utility model is achieved through the following technical solution: A filtration and adsorption device for treating industrial waste gas includes: The filter tube is a tubular filter element with several dense pores, used to filter particulate matter in industrial waste gas. The first cylinder is fitted onto the outside of the filter tube and is a sieve tube structure. The second cylinder is fitted outside the first cylinder. It has a sieve tube structure and an adsorption layer is provided between the first and second cylinders. The sieve pores of the first and second cylinders are smaller than the particle size of the adsorbent to prevent the adsorbent from leaking out. The third cylinder is fitted outside the second cylinder, and an annular space is formed between the third cylinder and the second cylinder. An air outlet pipe is provided on the side wall of the third cylinder, and the interior of the air outlet pipe is connected to the interior of the third cylinder. Flanges are provided at both ends of the third cylinder. The first sealing plate is a circular plate structure. The first sealing plate is bolted to the flange at one end of the third cylinder, and a sealing ring is provided between the contact interfaces to form a seal. One end of the filter tube, one end of the first cylinder, and one end of the second cylinder are all fixed on the first sealing plate. The filter tube, the first cylinder, and the second cylinder can be simultaneously disassembled and assembled inside the third cylinder through the first sealing plate. The second sealing plate is a circular plate structure. It is bolted to the flange at the other end of the third cylinder, and a sealing ring is provided between the contact interfaces to form a seal. The filter pipe, the first cylinder, and the end of the second cylinder away from the first sealing plate are all in close contact with the side wall of the second sealing plate, and the contact interface forms a seal. A through hole is opened in the center of the second sealing plate. An air inlet pipe is provided on the side of the second sealing plate away from the third cylinder. The inside of the air inlet pipe is connected to the inside of the filter pipe through the through hole on the second sealing plate, so that industrial waste gas enters the filter pipe through the air inlet pipe to filter particulate matter.

[0007] Furthermore, annular bodies are welded to both the end of the first cylinder away from the first sealing plate and the end of the second cylinder away from the first sealing plate. A sealing plate is provided between the annular body and the second sealing plate. The sealing plate is a hollow annular plate structure with an inner diameter not less than the inner diameter of the annular body at the end of the first cylinder away from the first sealing plate. A groove is formed on the side wall of the sealing plate near the annular body. The groove is a circular groove with an internal thread on its inner side wall. An external thread is formed on the outer side wall of the annular body at the end of the second cylinder. The annular body at the end of the second cylinder is threadedly connected to the sealing plate. The end faces of both annular bodies are in close contact with the bottom surface of the groove. After the annular space between the first cylinder and the second cylinder is filled with adsorbent, the sealing plate is installed to seal it to prevent the adsorbent from leaking out of the annular space. After removing the sealing plate, the adsorbent filled between the first cylinder and the second cylinder can be removed and installed.

[0008] Furthermore, a tube body is welded to the end of the filter tube away from the first sealing plate. The tube body is a T-shaped hollow tubular structure. The outer wall of the tube body away from the filter tube is in close contact with the inner wall of the sealing plate. An annular space is formed between the filter tube and the first cylinder body for the transition of industrial waste gas that has had particulate matter filtered out by the filter tube.

[0009] Furthermore, sealing rings are provided at the contact interfaces between the tube body and the second sealing plate, the contact interfaces between the ring body and the sealing plate, and the contact interfaces between the sealing plate and the second sealing plate. The sealing rings can form a seal at the contact interfaces to prevent air leakage at the gaps in the contact interfaces.

[0010] Furthermore, the end face of the tube body near the second sealing plate, the end face of the ring body near the sealing plate, and the side wall of the sealing plate near the second sealing plate are all provided with annular grooves for the sealing ring to be inserted. Inserting the sealing ring into the annular groove can limit the sealing ring and reduce the probability of the sealing ring installed on the filter tube, the first cylinder, and the second cylinder falling off when they are installed or removed from the third cylinder.

[0011] Furthermore, a third sealing plate is welded to one end of the filter tube close to the first sealing plate. The third sealing plate is a circular plate structure, and its outer wall is in close contact with the inner wall of the first cylinder. When the filter tube is disassembled and removed from the first cylinder, the third sealing plate can seal one end of the filter tube to prevent the particles filtered out from the filter tube from being exposed from this end.

[0012] Furthermore, the third sealing plate is detachably connected to the first sealing plate. When the first cylinder and the second cylinder are removed from the third cylinder, the filter tube is fixed in the first cylinder along with the third sealing plate, so that it can be removed from the third cylinder synchronously with the first cylinder. After being removed from the third cylinder, the filter tube can be removed from the end of the first cylinder away from the first sealing plate.

[0013] Furthermore, a handle is provided on the outer side wall of the first sealing plate. The handle has a U-shaped structure, and its two ends are respectively welded to the outer side wall of the first sealing plate. Holding the handle by hand makes it easy to operate the first sealing plate and the components installed on it, such as easily pushing and pulling the second cylinder to move it in and out of the third cylinder.

[0014] As can be seen from the above technical solution, the filtration and adsorption device for industrial waste gas treatment provided by this utility model has the following beneficial effects: This filtration and adsorption device has a tubular structure and can be installed on the nearest gas pipeline at the source of industrial waste gas for pre-treatment by filtration and adsorption. The industrial waste gas enters the third cylinder through the inlet pipe, where particulate matter is first filtered by the filter pipe, and then harmful gases in the industrial waste gas are filtered by the adsorption layer between the first and second cylinders. After filtration and adsorption treatment, the industrial waste gas is then discharged through the outlet pipe and merged into the gas pipeline to be sent to subsequent treatment equipment. This pre-treatment can reduce the content of particulate matter and VOCs in the industrial waste gas, thereby reducing the damage to the pipeline caused by particulate matter and VOCs during transportation. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a cross-sectional structural diagram of Embodiment 1 of the present invention.

[0017] Figure 2 This is a cross-sectional structural diagram of Embodiment 2 of the present invention.

[0018] Figure 3 for Figure 2 A schematic diagram of the split structure.

[0019] The components in the diagram are named as follows: 1. Filter tube; 2. First cylinder; 3. Second cylinder; 4. Adsorption layer; 5. Third cylinder; 6. First sealing plate; 7. Handle; 8. Air outlet pipe; 9. Flange; 10. Second sealing plate; 11. Air inlet pipe; 12. Sealing ring; 13. Third sealing plate; 14. Magnet; 15. Iron plate; 16. Tube body; 17. Ring body; 18. Sealing plate. Detailed Implementation

[0020] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0021] In the description of this application, it should be understood that the terms "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Example 1 A filtration and adsorption device for industrial waste gas treatment, such as Figure 1 As shown, it mainly consists of a filter tube 1, a first cylinder 2, a second cylinder 3, an adsorption layer 4, a third cylinder 5, a first sealing plate 6, a handle 7, an air outlet pipe 8, a flange 9, a second sealing plate 10, an air inlet pipe 11, a sealing ring 12, and a handle 7.

[0023] The filter tube 1, such as Figure 1 As shown, it is a tubular filter element with several dense pores, used to filter particulate matter in industrial waste gas. It is a conventional filter element in existing filter devices. The left end of the filter tube 1 is fixed to the right side wall of the first sealing plate 6, so that it can be disassembled and installed with the first sealing plate 6.

[0024] The first cylinder 2 and the second cylinder 3, as Figure 1As shown, both are sieve tube structures. The first cylinder 2 is fitted outside the filter tube 1, and the second cylinder 3 is fitted outside the first cylinder 2. An annular space is formed between the two. The left ends of both are welded to the right side wall of the first sealing plate 6. The annular space between the first cylinder 2 and the second cylinder 3 is filled with activated carbon adsorbent to form an adsorption layer 4. The third cylinder 5, as Figure 1 As shown, it is fitted outside the second cylinder 3, and an annular space is formed between the third cylinder 5 and the second cylinder 3. An air outlet pipe 8 is welded to the side wall of the third cylinder 5, and the interior of the air outlet pipe 8 is connected to the interior of the third cylinder 5. Flanges 9 are welded to both the left and right ends of the third cylinder 5.

[0025] The first sealing plate 6, such as Figure 1 As shown, it is a circular plate structure. The first sealing plate 6 is bolted to the flange 9 at the left end of the third cylinder 5, and a sealing ring 12 is provided between the contact interfaces to form a seal. This is a conventional connection and sealing structure. The filter tube 1, the first cylinder 2 and the second cylinder 3 can be disassembled and assembled simultaneously in the third cylinder 5 through the first sealing plate 6.

[0026] The second sealing plate 10, such as Figure 1 As shown, it is a circular plate-like structure with a through hole in the center equal to the inner diameter of filter tube 1. Figure 1 In the middle, the second sealing plate 10 is bolted to the flange 9 at the right end of the third cylinder 5, and a sealing ring 12 is provided between the contact interfaces to form a seal. The right end of the filter pipe 1, the right end of the first cylinder 2 and the right end of the second cylinder 3 are all in close contact with the left side wall of the second sealing plate 10, and a sealing ring 12 is provided at the contact interface to form a seal. An air inlet pipe 11 is welded to the right side wall of the second sealing plate 10. The inside of the air inlet pipe 11 is connected to the inside of the filter pipe 1 through the through hole on the second sealing plate 10, so that industrial waste gas enters the filter pipe 1 through the air inlet pipe 11 to filter particulate matter.

[0027] The handle 7, as Figure 1 As shown, it has a U-shaped structure, with its two ends welded to the left side wall of the first sealing plate 6. By holding the handle 7, the first sealing plate 6 and the components installed on it can be easily operated. For example, the second cylinder 3 can be easily pushed and pulled to enter and exit the third cylinder 5.

[0028] The working principle of Example 1: The filtration and adsorption device is a tubular structure. It is installed on the gas pipeline near the source of industrial waste gas to perform filtration and adsorption pretreatment of industrial waste gas, aiming to reduce the damage to the pipeline caused by particulate matter and harmful gases in industrial waste gas during transportation. Industrial waste gas enters the filter tube 1 through the inlet pipe 11. The filter tube 1 filters particulate matter from the industrial waste gas. After the particulate matter is removed, the industrial waste gas passes through the side wall of the filter tube 1 and then through the side wall of the first cylinder 2 into the annular space between the first cylinder 2 and the second cylinder 3. The adsorption layer 4 between the first cylinder 2 and the second cylinder 3 filters harmful gases from the industrial waste gas. Subsequently, the industrial waste gas passes through the side wall of the second cylinder 3 and enters the annular space between the second cylinder 3 and the third cylinder 5. Finally, it is discharged from the outlet pipe 8 and then merges into the gas transmission pipeline to be sent to subsequent treatment equipment. If the filter tube 1 or the adsorption layer 4 becomes blocked, the first sealing plate 6 can be removed to simultaneously disassemble and remove the filter tube 1, the first cylinder 2, and the second cylinder 3 from the third cylinder 5 for maintenance. This filtration and adsorption device can filter particulate matter and adsorb harmful gases on gas pipelines at the source of industrial waste gas, pre-treating the industrial waste gas and reducing the content of particulate matter and harmful gases in the industrial waste gas, thereby reducing the damage to the pipeline during transportation.

[0029] Example 2 A filtration and adsorption device for industrial waste gas treatment, such as Figure 2 and Figure 3 As shown, the difference from Embodiment 1 is that the filter adsorption device further includes a third sealing plate 13, a magnet 14, an iron plate 15, a tube 16, a ring 17, and a sealing plate 18.

[0030] The ring 17, as Figure 2 As shown, it is a circular cylindrical structure. In the figure, the right end of the first cylindrical body 2 and the right end of the second cylindrical body 3 are both welded with rings 17.

[0031] The sealing plate 18, such as Figure 2 As shown, it is positioned between the ring 17 and the sealing plate 18. It is a hollow annular plate structure with an inner diameter not less than the inner diameter of the right-end ring 17 of the first cylinder 2. The left side wall of the sealing plate 18 has a circular groove, and the inner side wall of the groove has an internal thread. The outer side wall of the right-end ring 17 of the second cylinder 3 has an external thread, and the right-end ring 17 of the second cylinder 3 is threadedly connected to the sealing plate 18. The right end faces of both rings 17 are in close contact with the bottom surface of the groove, and the contact interface is provided with a sealing ring 12 to form a seal. After the annular space between the first cylinder 2 and the second cylinder 3 is filled with adsorbent, the sealing plate 18 is installed to seal it to prevent the adsorbent from leaking out of the annular space. After removing the sealing plate 18, the adsorbent filled between the first cylinder 2 and the second cylinder 3 can be removed and installed. The contact interface between the right side wall of the sealing plate 18 and the left side wall of the second sealing plate 10 is provided with a sealing ring 12 to form a seal to prevent air leakage at the gap of the contact interface.

[0032] The tube body 16, as Figure 2As shown, it is a T-shaped hollow tubular structure. The small-diameter end of the tube body 16 is welded to the right end of the filter tube 1. The outer side wall of the left end of the tube body 16 is in close contact with the inner side wall of the sealing plate 18. An annular space is formed between the filter tube 1 and the first cylinder 2 for the transition of industrial waste gas that has been filtered of particulate matter by the filter tube 1. A sealing ring 12 is provided at the contact interface between the right end face of the tube body 16 and the left end face of the second sealing plate 10 to form a seal, so that the industrial waste gas entering through the air inlet pipe 11 can be filtered of particulate matter through the side wall of the filter tube 1.

[0033] The third sealing plate 13, as Figure 2 As shown, it is a circular plate structure, which is welded to the left end of the filter tube 1. Its outer wall is in close contact with the inner wall of the first cylinder 2. When the filter tube 1 is removed from the first cylinder 2, the third sealing plate 13 can seal one end of the filter tube 1 to prevent the particles filtered out from the filter tube 1 from being exposed from this end. The third sealing plate 13 is detachably connected to the first sealing plate 6. Specifically, an iron plate 15 is embedded in the side wall of the third sealing plate 13 close to the first sealing plate 6, and a magnet 14 is embedded in the side wall of the third sealing plate 13 close to the first sealing plate 6. The first sealing plate 6 is magnetically connected to the iron plate 15 on the third sealing plate 13 through the magnet 14 thereon, which makes it easy to disassemble and assemble. When the first cylinder 2 and the second cylinder 3 are removed from the third cylinder 5, the filter tube 1 is fixed in the first cylinder 2 along with the third sealing plate 13, so that it can be removed from the third cylinder 5 at the same time as the first cylinder 2. After being removed from the third cylinder 5, the filter tube 1 can be removed from the end of the first cylinder 2 away from the first sealing plate 6. In addition, the third sealing plate 13 and the first sealing plate 6 can also be connected by screws. The screws pass through the first sealing plate 6 from the side of the first sealing plate 6 away from the third sealing plate 13 and are threaded to the third sealing plate 13. Double-sided adhesive can also be used for bonding.

[0034] To improve the stability of the contact interface sealing ring 12, such as Figure 2 As shown, the right end face of the tube body 16, the right end face of the ring body 17, and the right side wall of the sealing plate 18 are all provided with annular grooves for the sealing ring 12 to be inserted. Inserting the sealing ring 12 into the annular groove can limit the sealing ring 12 and reduce the probability that the sealing ring 12 installed on the filter tube 1, the first cylinder 2, and the second cylinder 3 will fall off when they are installed or removed from the third cylinder 5.

[0035] The working principle of this embodiment 2: The working principle of Embodiment 2 is the same as that of Embodiment 1, except that an annular space is formed between the filter pipe 1 and the first cylinder 2 during the industrial waste gas filtration process. The industrial waste gas, after being filtered for particulate matter by the filter pipe 1, can transition within this annular space and then enter the annular space between the first cylinder 2 and the second cylinder 3 for adsorption treatment. Furthermore, as... Figure 3As shown, after the filter tube 1, the first cylinder 2, and the second cylinder 3 are removed from the third cylinder 5 along with the first sealing plate 6, the filter tube 1 can be removed from the first cylinder 2 to treat the particulate matter filtered out inside. After removing the sealing plate 18, the activated carbon adsorbent filled between the first cylinder 2 and the second cylinder 3 can be removed and replaced.

[0036] In addition, the filtration and adsorption device can be configured in two, three or more sets and installed in parallel on the gas transmission pipeline near the source of industrial waste gas. Valves are installed on both the inlet pipe 11 and the outlet pipe 8, so that each filtration and adsorption device can be used and maintained alternately to ensure the continuity of industrial waste gas filtration and adsorption.

Claims

1. A filtration and adsorption device for treating industrial waste gas, comprising a filter tube (1), characterized in that, Also includes: The first cylinder (2) is fitted onto the outside of the filter tube (1) and is a sieve tube structure. The second cylinder (3) is fitted outside the first cylinder (2). It is a sieve tube structure, and an adsorption layer (4) is provided between the first cylinder (2) and the second cylinder (3). The third cylinder (5) is fitted outside the second cylinder (3), and an annular space is formed between the third cylinder (5) and the second cylinder (3). An air outlet pipe (8) is provided on the side wall of the third cylinder (5), and the interior of the air outlet pipe (8) is connected to the interior of the third cylinder (5). Flanges (9) are provided at both ends of the third cylinder (5). The first sealing plate (6) is a circular plate structure. The first sealing plate (6) is bolted to the flange (9) at one end of the third cylinder (5). One end of the filter tube (1), one end of the first cylinder (2) and one end of the second cylinder (3) are all fixed on the first sealing plate (6). The second sealing plate (10) is a circular plate structure. The second sealing plate (10) is bolted to the flange (9) at the other end of the third cylinder (5). The filter tube (1), the first cylinder (2) and the second cylinder (3) are all in close contact with the side wall of the second sealing plate (10) and the contact interface forms a seal. The center of the second sealing plate (10) has a through hole. An air inlet pipe (11) is provided on the side of the second sealing plate (10) away from the third cylinder (5). The inside of the air inlet pipe (11) is connected to the inside of the filter tube (1) through the through hole on the second sealing plate (10).

2. The filtration and adsorption device for industrial waste gas treatment according to claim 1, characterized in that: An annular body (17) is welded to the end of the first cylindrical body (2) away from the first sealing plate (6) and the end of the second cylindrical body (3) away from the first sealing plate (6). A sealing plate (18) is provided between the annular body (17) and the second sealing plate (10). The sealing plate (18) is a hollow annular plate structure with an inner diameter not less than the inner diameter of the annular body (17) at the end of the first cylindrical body (2) away from the first sealing plate (6). A groove is provided on the side wall of the sealing plate (18) near the annular body (17). The groove is a circular groove with an internal thread on its inner side wall. An external thread is provided on the outer side wall of the annular body (17) at the end of the second cylindrical body (3). The annular body (17) at the end of the second cylindrical body (3) is threadedly connected to the sealing plate (18). The end faces of the two annular bodies (17) are in close contact with the bottom surface of the groove.

3. The filtration and adsorption device for industrial waste gas treatment according to claim 2, characterized in that: The filter tube (1) is welded to a tube body (16) at the end away from the first sealing plate (6). The tube body (16) is a T-shaped hollow tubular structure. The outer wall of the tube body (16) away from the filter tube (1) is in close contact with the inner wall of the sealing plate (18).

4. The filtration and adsorption device for industrial waste gas treatment according to claim 3, characterized in that: The contact interfaces between the tube body (16) and the second sealing plate (10), the contact interfaces between the ring body (17) and the sealing plate (18), and the contact interfaces between the sealing plate (18) and the second sealing plate (10) are all provided with sealing rings (12).

5. The filtration and adsorption device for industrial waste gas treatment according to claim 4, characterized in that: The end face of the tube (16) close to the second sealing plate (10), the end face of the ring (17) close to the sealing plate (18), and the side wall of the sealing plate (18) close to the second sealing plate (10) are all provided with annular grooves into which the sealing ring (12) can be inserted.

6. The filtration and adsorption device for industrial waste gas treatment according to claim 1, characterized in that: The filter tube (1) has a third sealing plate (13) welded to one end close to the first sealing plate (6). The third sealing plate (13) is a circular plate structure, and its outer wall is in gap contact with the inner wall of the first cylinder (2).

7. The filtration and adsorption device for industrial waste gas treatment according to claim 6, characterized in that: The third sealing plate (13) is detachably connected to the first sealing plate (6).

8. The filtration and adsorption device for industrial waste gas treatment according to claim 1, characterized in that: The outer side wall of the first sealing plate (6) is provided with a handle (7), which has a U-shaped structure and its two ends are respectively welded to the outer side wall of the first sealing plate (6).

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