Tail gas treatment device for benzyl chloride production

Abstract

The utility model belongs to the technical field of benzyl chloride production tail gas treatment, and particularly relates to a tail gas treatment device for benzyl chloride production, which comprises a treatment box, a plurality of annular pipes fixedly mounted on the inner wall of the treatment box, a plurality of spray heads fixedly mounted on the inner sides of the annular pipes, and a filter screen fixedly mounted in the treatment box and positioned below the annular pipes, a gas distribution pipe is arranged in the treatment box and located at the top of the filter screen; one end of the gas distribution pipe penetrates through the treatment box and is fixedly provided with a gas inlet pipe; the water supply assembly is located in the treatment box and used for supplying water into the annular pipes; according to the tail gas purification device, dust and particulate matters in tail gas can be adsorbed and wetted by water and then settle down along with water flow, the purification effect is achieved, water resources can be reutilized, it is guaranteed that the water resources can be saved, harmful substances in the tail gas can be adsorbed, it is guaranteed that the harmful substances in the tail gas cannot be discharged to the outside, and the environmental protection effect is achieved. The pollution to the environment is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of tail gas treatment technology for benzyl chloride production, and particularly relates to a tail gas treatment device for benzyl chloride production. Background Technology

[0002] Benzyl chloride has high chemical reactivity. The chlorine atom in its chloromethyl group is relatively active and can undergo a variety of chemical reactions. It can undergo hydrolysis to produce benzyl alcohol, react with sodium cyanide to produce phenylacetonitrile, and can then be used to synthesize compounds such as phenylacetic acid. It can also react with ammonia to produce a series of organic compounds such as benzylamine, and has a wide range of applications in organic synthesis.

[0003] The production of benzyl chloride generates a large amount of exhaust gas, which contains particulate matter and harmful gases. These pollutants, when released into the environment, can cause pollution and harm to human health. While activated carbon filters are commonly used to filter the exhaust gas, the moisture content in the exhaust gas can cause these filters to quickly become ineffective. Therefore, we propose an exhaust gas treatment device for benzyl chloride production. Utility Model Content

[0004] The purpose of this invention is to provide a tail gas treatment device for benzyl chloride production to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides a tail gas treatment device for benzyl chloride production, comprising:

[0006] A treatment box, wherein several annular tubes are fixedly installed on the inner wall of the treatment box, several nozzles are fixedly installed on the inner side of the annular tubes, a filter screen is fixedly installed inside the treatment box and below the several annular tubes, and an air distribution pipe is provided inside the treatment box and above the filter screen, one end of the air distribution pipe passing through the treatment box and having an air inlet pipe fixedly installed thereon.

[0007] A water supply assembly, located inside a treatment tank, is used to supply water to several annular pipes;

[0008] An L-shaped tube is fixedly installed on the top of the processing box. A drying box is fixedly installed at one end of the L-shaped tube. Several baffles are fixedly installed inside the drying box. An air outlet pipe is fixedly installed on one side of the drying box. A slot is opened in the air outlet pipe. A connector plate is inserted into the slot. A groove is opened on the top of the connector plate. An activated carbon filter plate is inserted into the groove. A sealing gasket that contacts the air outlet pipe is fixedly installed on the connector plate.

[0009] A limiting component is located inside the air outlet pipe and is used to limit the position of the plug plate.

[0010] In this technical solution, during use, personnel can discharge the exhaust gas generated during the production of benzyl chloride into the gas distribution pipe through the inlet pipe, and then evenly discharge the exhaust gas into the inner cavity of the treatment box through the gas distribution pipe. At this time, personnel can use the water supply component to transport water from the bottom of the inner cavity of the treatment box into several annular pipes, and finally spray it evenly from several nozzles, so that the water can fully contact the exhaust gas, allowing the dust and particulate matter in the exhaust gas to be adsorbed and moistened by the water, and then settle down with the water flow, playing a purification role. Subsequently, the water will continue to flow into the bottom of the inner cavity of the treatment box through the filter screen, thereby achieving the effect of secondary utilization of water resources and ensuring water conservation.

[0011] Subsequently, the exhaust gas enters the drying chamber through an L-shaped pipe. As the exhaust gas moves within the drying chamber, it is blocked by several baffles, allowing it to remain in the drying chamber for a longer period of time. This ensures thorough drying of the exhaust gas. Heating removes moisture from the exhaust gas, ensuring that the moisture does not affect the normal operation of the activated carbon filter plate and that its adsorption capacity does not decrease due to the moisture in the exhaust gas. The exhaust gas then passes through the activated carbon filter plate and is discharged to the outside. The activated carbon filter plate adsorbs harmful substances in the exhaust gas, preventing them from being released into the environment and avoiding pollution.

[0012] When the activated carbon filter plate fails after a long period of time, personnel can release the limiting component to remove the plug plate. The plug plate can then be pulled out of the slot, releasing the slot from its limiting position. The activated carbon filter plate can then be pulled out of the groove for replacement. The plug plate is then inserted back into the slot until it is fully inserted. At this point, the limiting component will limit the plug plate, while the slot will limit the activated carbon filter plate, ensuring easy replacement. Simultaneously, the sealing gasket ensures the slot remains airtight after replacement, preventing any air leakage.

[0013] In the above technical solution, the water supply component further includes:

[0014] A support plate is fixedly installed on the periphery of the treatment tank. A water pump is fixedly installed on the top of the support plate. The water inlet of the water pump passes through the periphery of the treatment tank and extends to the bottom of the inner cavity of the treatment tank. A connecting pipe is fixedly installed on the water outlet of the water pump. One end of the connecting pipe passes through the top of the treatment tank and is connected to several annular pipes.

[0015] In this technical solution, the water pump is started, which draws water from the bottom of the treatment tank and delivers it to the connecting pipe. The water then enters several annular pipes and is finally sprayed evenly from several nozzles, allowing the water to fully contact the exhaust gas. This allows the dust and particulate matter in the exhaust gas to be adsorbed and moistened by the water, and then settle down with the water flow, thus achieving a purification effect. Subsequently, the water will continue to flow into the bottom of the treatment tank through the filter screen, thereby achieving the effect of secondary water utilization and ensuring water conservation.

[0016] In the above technical solution, the connecting pipe is further welded tightly to the processing box, and the connecting pipe is also welded tightly to several annular pipes.

[0017] In this technical solution, the structural stability of the connecting pipe is ensured, and the structural stability of the connecting pipe and several annular pipes is guaranteed.

[0018] In the above technical solution, the limiting component further includes:

[0019] A sliding groove is formed inside the air outlet pipe and located on one side of the plug plate. A limiting block is slidably installed inside the sliding groove. One end of the limiting block passes through one side of the sliding groove and extends into the plug plate. The other end of the limiting block is fixedly installed with a spring that is fixed to the inner wall of the sliding groove. One side of the limiting block passes through the sliding groove and extends to the outside.

[0020] In this technical solution, when the activated carbon filter plate fails for an extended period, personnel can move the limiting block. Moving the limiting block compresses the spring, causing it to contract until one end of the limiting block moves out of the insertion plate. At this point, the limiting block releases the insertion plate, allowing personnel to pull it out of the slot. The slot then releases the activated carbon filter plate, allowing personnel to remove it from the groove for replacement. When the insertion plate is reinserted into the slot, it compresses one end of the limiting block, causing the limiting block to move and compress the spring until the insertion plate is fully inserted into the slot. At this point, the spring's rebound force pushes the limiting block back to its original position, allowing one end of the limiting block to insert into the insertion plate, thus limiting the insertion plate. The slot effectively limits the activated carbon filter plate, ensuring easy replacement. Simultaneously, the sealing gasket ensures the slot remains airtight after replacement, preventing air leakage.

[0021] In the above technical solution, one end of the limiting block is inserted into the plug-in plate, and one end of the limiting block has an inclined structure.

[0022] In this technical solution, it is ensured that one end of the limiting block can be inserted into the plug plate, so that the limiting block can move when the plug plate squeezes the limiting block.

[0023] Furthermore, the above technical solution also includes:

[0024] A heating tank is located inside a drying oven, and heating wires are fixedly installed inside the heating tank.

[0025] In this technical solution, the heating wire is energized, and the heating wire heats up the inner cavity of the drying chamber, which can fully dry the exhaust gas. The heating can remove the moisture in the exhaust gas, ensuring that the moisture in the exhaust gas will not affect the normal use of the activated carbon filter plate.

[0026] In the above technical solution, further, the baffles are staggered, the nozzles are distributed in a ring at equal intervals, and the top of the activated carbon filter plate abuts against the top of the slot.

[0027] In this technical solution, the structure of several baffles is ensured to be stable, the distribution of several nozzles is ensured to be more uniform, and the slots are ensured to limit the position of the activated carbon filter plate.

[0028] The beneficial effects of this utility model are:

[0029] 1. The tail gas treatment device for benzyl chloride production, through the water supply component, the ring pipe, the nozzle, the filter screen, the gas distribution pipe and the air inlet pipe working together, can adsorb and moisten the dust and particulate matter in the tail gas with water, and then settle down with the water flow, thus playing a purification role. It can also reuse water resources and ensure water conservation.

[0030] 2. This tail gas treatment device for benzyl chloride production, through the installation of a drying box, and the cooperation of the drying box, L-shaped pipe, baffle, and activated carbon filter plate, can remove moisture from the tail gas, ensuring that harmful substances in the tail gas can be adsorbed, preventing harmful substances from being discharged into the outside world and avoiding environmental pollution. At the same time, it can also fully dry the tail gas, preventing the moisture in the tail gas from causing the activated carbon filter plate to fail quickly. Attached Figure Description

[0031] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0032] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0033] Figure 3 This is a detailed internal structural diagram of the entire present invention;

[0034] Figure 4 This is a detailed internal structural diagram of the processing box in this utility model;

[0035] Figure 5 This is a detailed internal structural diagram of the drying oven in this utility model;

[0036] Figure 6 This is a detailed internal structural diagram of the air outlet pipe in this utility model;

[0037] Figure 7 This utility model Figure 6 Enlarged structural diagram at point A in the middle;

[0038] Figure 8 This is a schematic diagram of the structure of the activated carbon filter plate exploding in this utility model.

[0039] The markings in the diagram are as follows:

[0040] 1. Processing box; 2. Ring pipe; 3. Nozzle; 4. Filter screen; 5. Air distribution pipe; 6. Air inlet pipe; 7. Support plate; 8. Water pump; 9. Connecting pipe; 10. L-shaped pipe; 11. Drying box; 12. Heating tank; 13. Heating wire; 14. Baffle; 15. Air outlet pipe; 16. Slot; 17. Insert plate; 18. Groove; 19. Activated carbon filter plate; 20. Sealing gasket; 21. Sliding groove; 22. Limiting block; 23. Spring. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0042] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0043] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0044] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0045] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0046] Example 1:

[0047] Please see Figure 1 - Figure 8 As shown, this embodiment provides a tail gas treatment device for benzyl chloride production, including:

[0048] The treatment box 1 has several annular tubes 2 fixedly installed on its inner wall. Several nozzles 3 are fixedly installed on the inner side of the annular tubes 2. A filter screen 4 is fixedly installed inside the treatment box 1 and below the several annular tubes 2. An air distribution pipe 5 is provided inside the treatment box 1 and at the top of the filter screen 4. One end of the air distribution pipe 5 passes through the treatment box 1 and is fixedly installed with an air inlet pipe 6.

[0049] A water supply assembly is located inside the treatment tank 1 and is used to supply water to several ring pipes 2.

[0050] L-shaped tube 10 is fixedly installed on the top of the processing box 1. A drying box 11 is fixedly installed at one end of the L-shaped tube 10. Several baffles 14 are fixedly installed inside the drying box 11. An air outlet pipe 15 is fixedly installed on one side of the drying box 11. A slot 16 is opened in the air outlet pipe 15. A plug plate 17 is inserted into the slot 16. A groove 18 is opened on the top of the plug plate 17. An activated carbon filter plate 19 is inserted into the groove 18. A sealing gasket 20 that contacts the air outlet pipe 15 is fixedly installed on the plug plate 17.

[0051] A limiting component is located inside the air outlet pipe 15 and is used to limit the plug plate 17.

[0052] In operation, the exhaust gas generated during the production of benzyl chloride can be discharged into the distribution pipe 5 through the inlet pipe 6. The exhaust gas is then evenly discharged into the inner cavity of the treatment box 1 through the distribution pipe 5. At this time, the water supply component can be used to transport water from the bottom of the inner cavity of the treatment box 1 into several annular pipes 2, and finally sprayed evenly from several nozzles 3. This allows the water to fully contact the exhaust gas, enabling the dust and particulate matter in the exhaust gas to be adsorbed and moistened by the water, and then settle down with the water flow, thus playing a purification role. Subsequently, the water will continue to flow into the bottom of the inner cavity of the treatment box 1 through the filter screen 4, thereby achieving the effect of secondary utilization of water resources and ensuring water conservation.

[0053] Subsequently, the exhaust gas enters the drying chamber 11 through the L-shaped pipe 10. As the exhaust gas moves within the drying chamber 11, it is blocked by several baffles 14, allowing it to remain in the drying chamber 11 for a longer period of time. This ensures that the exhaust gas is thoroughly dried. Heating removes moisture from the exhaust gas, ensuring that the moisture does not affect the normal use of the activated carbon filter plate 19 and that the adsorption capacity of the activated carbon filter plate 19 does not deteriorate due to the moisture in the exhaust gas. The exhaust gas then passes through the activated carbon filter plate 19 and is discharged to the outside. The activated carbon filter plate 19 can adsorb harmful substances in the exhaust gas, ensuring that harmful substances are not discharged to the outside and preventing environmental pollution.

[0054] When the activated carbon filter plate 19 fails for an extended period, personnel can release the limiting component from the insertion plate 17, allowing the insertion plate 17 to be pulled out of the slot 16. At this point, the slot 16 can release the limiting component from the activated carbon filter plate 19, enabling the personnel to pull the activated carbon filter plate 19 out of the groove 18 for replacement. The insertion plate 17 is then inserted back into the slot 16 until it is fully inserted. At this point, the limiting component can limit the insertion plate 17, while the slot 16 can limit the activated carbon filter plate 19, ensuring easy replacement of the activated carbon filter plate 19. Simultaneously, the sealing gasket 20 ensures the sealing of the slot 16 after replacement, preventing air leakage.

[0055] Example 2:

[0056] This embodiment provides a tail gas treatment device for benzyl chloride production. In addition to the technical solutions described in the above embodiments, it also has the following technical features: the water supply component includes:

[0057] A support plate 7 is fixedly installed on the periphery of the treatment tank 1. A water pump 8 is fixedly installed on the top of the support plate 7. The water inlet end of the water pump 8 passes through the periphery of the treatment tank 1 and extends to the bottom of the inner cavity of the treatment tank 1. A connecting pipe 9 is fixedly installed on the water outlet end of the water pump 8. One end of the connecting pipe 9 passes through the top of the treatment tank 1 and is connected to several annular pipes 2 respectively.

[0058] The process involves starting water pump 8, which draws water from the bottom of the treatment tank 1 and delivers it to connecting pipe 9. The water then enters several annular pipes 2 and is evenly sprayed from several nozzles 3, allowing the water to fully contact the exhaust gas. This enables the dust and particulate matter in the exhaust gas to be adsorbed and moistened by the water, and then settle down with the water flow, thus achieving a purification effect. The water then flows back into the bottom of the treatment tank 1 through the filter screen 4, achieving the effect of secondary water utilization and ensuring water conservation.

[0059] Example 3:

[0060] This embodiment provides a tail gas treatment device for benzyl chloride production. In addition to the technical solution of the above embodiment, it also has the following technical features: the connecting pipe 9 is tightly welded to the treatment box 1, and the connecting pipe 9 is tightly welded to several annular pipes 2.

[0061] Among these measures, ensuring the structural stability of the connecting pipe 9 and the structural stability of the connecting pipe 9 and several annular pipes 2 are crucial.

[0062] Example 4:

[0063] This embodiment provides a tail gas treatment device for benzyl chloride production. In addition to the technical solutions described in the above embodiments, it also has the following technical features, including a limiting component:

[0064] The sliding groove 21 is opened inside the air outlet pipe 15 and located on one side of the plug plate 17. A limiting block 22 is slidably installed inside the sliding groove 21. One end of the limiting block 22 passes through one side of the sliding groove 21 and extends into the plug plate 17. The other end of the limiting block 22 is fixedly installed with a spring 23 that is fixed to the inner wall of the sliding groove 21. One side of the limiting block 22 passes through the sliding groove 21 and extends to the outside.

[0065] When the activated carbon filter plate 19 fails for an extended period, the operator can move the limiting block 22. Moving the limiting block 22 will compress the spring 23, causing it to contract until one end of the limiting block 22 is removed from the insertion plate 17. At this point, the limiting block 22 can release the insertion plate 17 from its confinement, allowing the operator to pull the insertion plate 17 out of the slot 16. The slot 16 can then release the activated carbon filter plate 19 from its confinement, allowing the operator to remove it from the groove 18 for replacement. The insertion plate 17 can then be inserted back into the slot 16, at which point it will compress the limiting block 22. At one end, the limiting block 22 moves and compresses the spring 23 to retract until the plug plate 17 is fully inserted into the slot 16. At this time, under the action of the spring 23's rebound force, the spring 23 will compress the limiting block 22 to reset, so that one end of the limiting block 22 is inserted into the plug plate 17, thereby limiting the plug plate 17. The slot 16 can limit the activated carbon filter plate 19, ensuring that it is easy for personnel to replace the activated carbon filter plate 19. At the same time, the sealing gasket 20 can also ensure the sealing of the slot 16 after replacement, ensuring that the slot 16 will not leak.

[0066] Example 5:

[0067] This embodiment provides a tail gas treatment device for benzyl chloride production. In addition to the technical solution of the above embodiment, it also has the following technical features: one end of the limiting block 22 is inserted into the plug plate 17, and one end of the limiting block 22 has an inclined structure.

[0068] Specifically, it is ensured that one end of the limiting block 22 can be inserted into the plug plate 17, so that the limiting block 22 can move when the plug plate 17 squeezes the limiting block 22.

[0069] Example 6:

[0070] This embodiment provides a tail gas treatment device for benzyl chloride production, which, in addition to the technical solutions of the above embodiments, also has the following technical features and includes:

[0071] Heating tank 12 is located inside drying oven 11, and heating wire 13 is fixedly installed inside heating tank 12.

[0072] When the heating wire 13 is energized, it heats the inner cavity of the drying chamber 11, which can fully dry the exhaust gas. Heating can remove the moisture in the exhaust gas, ensuring that the moisture in the exhaust gas will not affect the normal use of the activated carbon filter plate 19.

[0073] Example 7:

[0074] This embodiment provides a tail gas treatment device for benzyl chloride production. In addition to the technical solution of the above embodiment, it also has the following technical features: a plurality of baffles 14 are arranged in an alternating manner, a plurality of nozzles 3 are distributed in a ring at equal intervals, and the top of the activated carbon filter plate 19 abuts against the top of the slot 16.

[0075] This ensures the structural stability of several baffles 14, ensures a more uniform distribution of several nozzles 3, and ensures that the slot 16 can limit the activated carbon filter plate 19.

[0076] Working principle: During use, the exhaust gas generated during the production of benzyl chloride can be discharged into the distribution pipe 5 through the inlet pipe 6. Then, the exhaust gas is evenly discharged into the inner cavity of the treatment box 1 through the distribution pipe 5. At this time, the personnel can start the water pump 8, which can draw water from the bottom of the inner cavity of the treatment box 1 and deliver it to the connecting pipe 9. Subsequently, the water in the connecting pipe 9 will enter several annular pipes 2 and finally be evenly sprayed out from several nozzles 3, so that the water can fully contact the exhaust gas. This allows the dust and particulate matter in the exhaust gas to be adsorbed and moistened by the water, and then settle down with the water flow, thus playing a purification role. Afterwards, the water will continue to flow into the bottom of the inner cavity of the treatment box 1 through the filter screen 4, thereby achieving the effect of secondary utilization of water resources and ensuring water conservation.

[0077] Subsequently, the exhaust gas enters the drying chamber 11 through the L-shaped pipe 10. At this time, the heating wire 13 is energized, and the heating wire 13 heats up the inner cavity of the drying chamber 11. As the exhaust gas moves within the drying chamber 11, it is blocked by several baffles 14, allowing the exhaust gas to stay in the drying chamber 11 for a longer period of time, ensuring that the exhaust gas is thoroughly dried. Heating removes moisture from the exhaust gas, ensuring that the moisture in the exhaust gas does not affect the normal use of the activated carbon filter plate 19, and ensuring that the adsorption capacity of the activated carbon filter plate 19 does not deteriorate due to the moisture in the exhaust gas. Then, the exhaust gas passes through the activated carbon filter plate 19 and is discharged to the outside. The activated carbon filter plate 19 can adsorb harmful substances in the exhaust gas, ensuring that harmful substances in the exhaust gas are not discharged to the outside, thus avoiding environmental pollution.

[0078] When the activated carbon filter plate 19 fails for an extended period, the operator can move the limiting block 22. Moving the limiting block 22 will compress the spring 23, causing it to contract until one end of the limiting block 22 is removed from the insertion plate 17. At this point, the limiting block 22 can release the limiting position on the insertion plate 17, allowing the operator to pull the insertion plate 17 out of the slot 16. The slot 16 can then release the limiting position on the activated carbon filter plate 19, allowing the operator to pull it out of the groove 18 for replacement. The insertion plate 17 is then inserted back into the slot 16, at which point it will compress one end of the limiting block 22. The end of the spring 23 is moved to compress the limiting block 22 and retract it until the plug plate 17 is fully inserted into the slot 16. At this time, under the action of the spring 23's rebound force, the spring 23 will compress the limiting block 22 to reset, so that one end of the limiting block 22 is inserted into the plug plate 17, thereby limiting the plug plate 17. The slot 16 can limit the activated carbon filter plate 19, ensuring that it is easy for personnel to replace the activated carbon filter plate 19. At the same time, the sealing gasket 20 can also ensure the sealing of the slot 16 after replacement, ensuring that the slot 16 will not leak.

[0079] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A tail gas treatment device for benzyl chloride production, characterized in that, Include: Processing box (1), the inner wall of the processing box (1) is fixedly installed with a plurality of annular pipes (2), the inner side of the annular pipe (2) is fixedly installed with a plurality of nozzles (3), the processing box (1) is fixedly installed with a filter screen (4) inside and below the plurality of annular pipes (2), the processing box (1) is provided with a gas distribution pipe (5) inside and on the top of the filter screen (4), one end of the gas distribution pipe (5) penetrates the processing box (1) and is fixedly installed with an air inlet pipe (6); Water supply assembly, the water supply assembly is located in the processing box (1), and is used for water supply in the plurality of annular pipes (2); L-shaped pipe (10), the L-shaped pipe (10) is fixedly installed on the top of the processing box (1), one end of the L-shaped pipe (10) is fixedly installed with a drying box (11), a plurality of baffles (14) are fixedly installed in the drying box (11), an air outlet pipe (15) is fixedly installed on one side of the drying box (11), a slot (16) is formed in the air outlet pipe (15), a plug-in plate (17) is insertedly installed in the slot (16), a recess (18) is formed in the top of the plug-in plate (17), an activated carbon filter plate (19) is insertedly installed in the recess (18), a sealing gasket (20) in contact with the air outlet pipe (15) is fixedly installed on the plug-in plate (17); Limiting assembly, the limiting assembly is located in the air outlet pipe (15) and is used for limiting the plug-in plate (17).

2. The tail gas treatment device for producing chlorobenzene according to claim 1, characterized by The water supply assembly comprises: Support plate (7), the support plate (7) is fixedly installed on the side of the processing box (1), the water pump (8) is fixedly installed on the top of the support plate (7), the water inlet end of the water pump (8) penetrates the side of the processing box (1) and extends to the bottom of the inner cavity of the processing box (1), the water outlet end of the water pump (8) is fixedly installed with a connecting pipe (9), one end of the connecting pipe (9) penetrates the top of the processing box (1) and is respectively communicated with the plurality of annular pipes (2).

3. The tail gas treatment device for producing chlorobenzene according to claim 2, characterized by The connecting pipe (9) is tightly welded with the processing box (1), and the connecting pipe (9) is tightly welded with the plurality of annular pipes (2).

4. The tail gas treatment device for producing chlorobenzene according to claim 1, characterized by The limiting assembly comprises: Sliding groove (21), the sliding groove (21) is formed in the air outlet pipe (15) and located on one side of the plug-in plate (17), the limiting block (22) is slidingly installed in the sliding groove (21), one end of the limiting block (22) penetrates one side of the sliding groove (21) and extends into the plug-in plate (17), the other end of the limiting block (22) is fixedly installed with a spring (23) fixedly installed in the inner wall of the sliding groove (21), one side of the limiting block (22) penetrates the sliding groove (21) and extends to the outside.

5. The tail gas treatment device for producing chlorobenzene according to claim 4, characterized by One end of the limiting block (22) is insertedly matched with the plug-in plate (17), and one end of the limiting block (22) is inclined.

6. The tail gas treatment device for producing chlorobenzene according to claim 1, characterized by Also includes: Heating groove (12), the heating groove (12) is formed in the drying box (11), and the heating wire (13) is fixedly installed in the heating groove (12).

7. The tail gas treatment device for producing chlorobenzene according to claim 1, characterized by A plurality of baffles (14) are arranged in a staggered manner, a plurality of nozzles (3) are annularly and equally spaced, and the top of the activated carbon filter plate (19) abuts against the top of the slot (16).

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