Efficient contact spraying type tail gas recovery device

Abstract

The utility model discloses an efficient contact spray type tail gas recovery device, which comprises a filter box and a tower body, the left side of the filter box is fixedly connected with a gas inlet pipe, and the right end of the inner cavity of the filter box is fixedly connected with a fixed frame. Through the arrangement of the spraying pipe, a sodium hydroxide absorbent can be sprayed into the tower body in the tail gas treatment process, and under the action of the activated carbon filler layer, the sodium hydroxide absorbent sprayed in the tower body can be in full contact with dimethyl sulfate in tail gas and can be recycled; meanwhile, by arranging a film-coated polyester cloth bag in the filter box, impurities in the tail gas can be effectively filtered in the process of conveying the tail gas into the tower body, the situation that the impurities enter the tower body and cause blockage of a porous structure of the activated carbon filler layer is avoided, and the replacement frequency and the use cost of the activated carbon filler layer are reduced.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, specifically to a high-efficiency contact spray-type exhaust gas recovery device. Background Technology

[0002] Dimethyl sulfate is an important organic chemical raw material, but its production and use will generate tail gas containing dimethyl sulfate. Dimethyl sulfate is toxic and corrosive, and direct emission into the atmosphere will not only cause serious environmental pollution, but also harm human health. Therefore, it is necessary to recycle and treat the dimethyl sulfate in the tail gas.

[0003] However, existing methods for recovering dimethyl sulfate tail gas generally employ absorbent spraying in conjunction with packing material to improve the contact and recovery efficiency between the absorbent and the tail gas. During the recovery process, the tail gas often contains impurities, which can easily cause blockage when they enter the porous structure of the packing material. This significantly reduces the contact area between the tail gas and the absorbent, resulting in poorer contact performance and directly lowering the recovery efficiency of dimethyl sulfate. Furthermore, the blockage of the packing material increases the frequency of personnel replacement and the cost of use. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency contact spray-type exhaust gas recovery device, which has the advantages of effectively filtering impurities in the exhaust gas, ensuring the contact effect between the exhaust gas and the absorbent, and improving the dimethyl sulfate recovery efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency contact spray-type exhaust gas recovery device, comprising a filter box and a tower body. An air inlet pipe is fixedly connected to the left side of the filter box, and a fixing frame is fixedly connected to the right end of the inner cavity of the filter box. Coated polyester bags are fixedly installed at both ends of the left side of the fixing frame. An air guide pipe is fixedly connected between the upper end of the front surface of the filter box and the lower end of the front surface of the tower body. A stainless steel mesh plate is fixedly installed in the middle of the inner cavity of the tower body. An activated carbon packing layer is placed between the top of the stainless steel mesh plate and the inner cavity of the tower body. A recovery pipe is fixedly connected to the lower right end of the tower body. A spray pipe is movably connected to the middle of the top of the tower body through a bearing. A rotary joint is fixedly installed at the top of the spray pipe, and a liquid supply pipe is fixedly installed at the top of the rotary joint.

[0006] As a preferred embodiment, a fixed plate is fixedly installed on the left side of the coated polyester bag, and a movable frame is fixedly connected between the right sides of the two fixed plates. A roller is movably connected to the middle end of the movable frame via a bearing. A spring is fixedly connected between the right side of the movable frame and the upper right end of the filter box cavity. Guide rods are slidably connected to both ends of the movable frame, and the right side of the guide rod is fixedly connected to the upper right end of the filter box cavity.

[0007] As a preferred embodiment, a second motor is fixedly installed at the top right end of the outer surface of the filter box, a half-cam is fixedly installed at the output end of the second motor, a support shaft is fixedly installed at the bottom right end of the half-cam, and the bottom of the support shaft is movably connected to the bottom of the inner cavity of the fixed frame through a bearing.

[0008] As a preferred embodiment, a collection box is fixedly installed at the bottom of the inner cavity of the filter box.

[0009] As a preferred embodiment, a fixing frame is fixedly connected to the top of the outer surface of the tower body, the surface of the spray pipe is movably connected to the left end of the fixing frame through a bearing, a second gear is fixedly installed at the upper end of the spray pipe, a first motor is fixedly installed at the right end of the top of the fixing frame, a first gear is fixedly installed at the output end of the first motor, and the first gear meshes with the second gear.

[0010] As a preferred embodiment, an exhaust pipe is fixedly connected to the upper end of the front surface of the tower body.

[0011] As a preferred embodiment, a base plate is fixedly connected between the bottom of the outer surface of the tower body and the bottom of the outer surface of the filter box.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention, through the installation of spray pipes, enables the spraying of sodium hydroxide absorbent into the tower body during the exhaust gas treatment process. Combined with the activated carbon packing layer, this allows for sufficient contact and recovery of the sodium hydroxide absorbent sprayed into the tower body with the dimethyl sulfate in the exhaust gas. Simultaneously, the use of membrane-coated polyester bags inside the filter box effectively filters impurities in the exhaust gas during its transport into the tower body, preventing impurities from entering the tower body and clogging the porous structure of the activated carbon packing layer. This reduces the frequency of activated carbon packing layer replacement and lowers operating costs. Furthermore, it ensures effective contact between the sodium hydroxide absorbent and the exhaust gas, as well as high dimethyl sulfate recovery efficiency, during long-term use. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 This is a schematic diagram of the front sectional view of the tower body of this utility model;

[0016] Figure 3 This is a front sectional view of the filter box of this utility model;

[0017] Figure 4 This is a top view cross-sectional structural diagram of the filter box of this utility model.

[0018] In the diagram: 1. Tower body; 2. Air guide pipe; 3. Base plate; 4. Collection box; 5. Filter box; 6. Air inlet pipe; 7. Recovery pipe; 8. Exhaust pipe; 9. Fixing frame; 10. First motor; 11. First gear; 12. Liquid supply pipe; 13. Rotary joint; 14. Second gear; 15. Spray pipe; 16. Activated carbon packing layer; 17. Stainless steel mesh plate; 18. Second motor; 19. Half cam; 20. Moving frame; 21. Roller; 22. Fixing frame; 23. Support shaft; 24. Fixing plate; 25. Guide slide rod; 26. Spring; 27. Coated polyester cloth bag. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0021] The components in this application, including the tower body 1, air guide pipe 2, bottom plate 3, collection box 4, filter box 5, air inlet pipe 6, recovery pipe 7, exhaust pipe 8, fixing frame 9, first motor 10, first gear 11, liquid supply pipe 12, rotary joint 13, second gear 14, spray pipe 15, activated carbon packing layer 16, stainless steel mesh plate 17, second motor 18, half cam 19, moving frame 20, roller 21, fixing frame 22, support shaft 23, fixing plate 24, guide slide rod 25, spring 26, and film-coated polyester cloth bag 27, are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0022] Example 1:

[0023] Please see Figures 1-4As shown, this utility model provides a high-efficiency contact spray-type exhaust gas recovery device, including a filter box 5 and a tower body 1. An air inlet pipe 6 is fixedly connected to the left side of the filter box 5. A fixing frame 22 is fixedly connected to the right end of the inner cavity of the filter box 5. A membrane-coated polyester cloth bag 27 is fixedly installed at both ends of the left side of the fixing frame 22. An air guide pipe 2 is fixedly connected between the upper end of the front surface of the filter box 5 and the lower end of the front surface of the tower body 1. A stainless steel mesh plate 17 is fixedly installed in the middle of the inner cavity of the tower body 1. An activated carbon packing layer 16 is placed between the top of the stainless steel mesh plate 17 and the inner cavity of the tower body 1. A recovery pipe 7 is fixedly connected to the lower right end of the tower body 1. A spray pipe 15 is movably connected to the middle of the top of the tower body 1 through a bearing. A rotary joint 13 is fixedly installed on the top of the spray pipe 15. A liquid supply pipe 12 is fixedly installed on the top of the rotary joint 13.

[0024] In this technical solution, after connecting the inlet pipe 6 to the exhaust pipe and the liquid supply pipe 12 to the sodium hydroxide absorbent delivery pipe, during the process of the exhaust gas being transported into the tower body 1 through the inlet pipe 6, filter box 5, and air guide pipe 2, the sodium hydroxide absorbent transported by the delivery pipe 15 can be sprayed into the tower body 1. Simultaneously, as the sodium hydroxide absorbent and exhaust gas pass through the activated carbon packing layer 16, the porous structure of the activated carbon packing layer 16 allows for sufficient contact between the sodium hydroxide absorbent and the exhaust gas, enabling rapid reaction and recovery of dimethyl sulfate in the exhaust gas. At the same time, the membrane-coated polyester bag 27 effectively filters impurities in the exhaust gas passing through the filter box 5, preventing impurities from entering the tower body 1 and causing blockage of the porous structure in the activated carbon packing layer 16. This ensures effective contact between the sodium hydroxide absorbent and the exhaust gas, as well as efficient recovery of dimethyl sulfate during long-term use, while reducing operating costs caused by frequent personnel replacement.

[0025] Example 2:

[0026] Based on Embodiment 1, this utility model is as follows: Figure 1 , Figure 3 and Figure 4As shown, a fixed plate 24 is fixedly installed on the left side of the coated polyester bag 27. A movable frame 20 is fixedly connected between the right sides of the two fixed plates 24. A roller 21 is movably connected to the middle end of the movable frame 20 through a bearing. A spring 26 is fixedly connected between the right side of the movable frame 20 and the upper right end of the inner cavity of the filter box 5. Guide rods 25 are slidably connected to both ends of the movable frame 20. The right side of the guide rods 25 is fixedly connected to the upper right end of the inner cavity of the filter box 5. A second motor 18 is fixedly installed at the right end of the top of the outer surface of the filter box 5. A half cam 19 is fixedly installed at the output end of the second motor 18. A support shaft 23 is fixedly installed at the right end of the bottom of the half cam 19. The bottom of the support shaft 23 is movably connected to the bottom of the inner cavity of the fixed frame 22 through a bearing. A collection box 4 is fixedly installed at the bottom of the inner cavity of the filter box 5.

[0027] In this technical solution, through the arrangement of fixed disk 24, movable frame 20, roller 21, spring 26, second motor 18, and half cam 19, the second motor 18 can drive the half cam 19 to rotate. As the half cam 19 rotates, its arc surface contacts the roller 21, pushing the roller 21, movable frame 20, and fixed disk 24 to the right, further compressing the spring 26. When the half cam 19 disengages from the surface of the roller 21 during rotation, the spring 26, under pre-compressed tension, allows the movable frame 20 and fixed disk 24 to... While moving quickly to the left, the surface of the coated polyester bag 27 is shaken, causing impurities attached to the surface of the coated polyester bag 27 to fall off, thereby achieving the effect of cleaning the surface of the coated polyester bag 27 and bringing great convenience to the cleaning and maintenance work. The guide slide 25 is set to guide the moving frame 20 and prevent the moving frame 20 from deviating during the movement. The support shaft 23 is set to support the bottom of the half cam 19 and prevent the half cam 19 from tilting during the movement.

[0028] Example 3:

[0029] Based on Embodiment 1, this utility model is as follows: Figure 1 and Figure 2 As shown, a fixed frame 9 is fixedly connected to the top of the outer surface of the tower body 1. The surface of the spray pipe 15 is movably connected to the left end of the fixed frame 9 through a bearing. A second gear 14 is fixedly installed at the upper end of the spray pipe 15. A first motor 10 is fixedly installed at the right end of the top of the fixed frame 9. A first gear 11 is fixedly installed at the output end of the first motor 10. The first gear 11 meshes with the second gear 14. An exhaust pipe 8 is fixedly connected to the upper end of the front surface of the tower body 1. A base plate 3 is fixedly connected between the bottom of the outer surface of the tower body 1 and the bottom of the outer surface of the filter box 5.

[0030] In this technical solution, the first motor 10, the first gear 11, and the second gear 14 are configured so that the first gear 11 can be rotated under the action of the first motor 10. The rotation of the first gear 11 can drive the second gear 14 and the spray pipe 15 to rotate, so that the spray pipe 15 can spray the sodium hydroxide absorbent into the interior of the tower body 1 under the action of rotation. The exhaust pipe 8 can be connected to the pipeline of the tail gas treatment equipment to facilitate further treatment of the tail gas. The base plate 3 is configured to support the whole structure.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A high-efficiency contact spray-type exhaust gas recovery device, comprising a filter box (5) and a tower body (1), characterized in that: An air inlet pipe (6) is fixedly connected to the left side of the filter box (5). A fixed frame (22) is fixedly connected to the right end of the inner cavity of the filter box (5). A coated polyester cloth bag (27) is fixedly installed at both ends of the left side of the fixed frame (22). An air guide pipe (2) is fixedly connected between the upper end of the front surface of the filter box (5) and the lower end of the front surface of the tower body (1). A stainless steel mesh plate (17) is fixedly installed in the middle of the inner cavity of the tower body (1). An activated carbon packing layer (16) is placed between the top of the stainless steel mesh plate (17) and the inner cavity of the tower body (1). A recovery pipe (7) is fixedly connected to the lower right side of the tower body (1). A spray pipe (15) is movably connected to the middle of the top of the tower body (1) through a bearing. A rotary joint (13) is fixedly installed on the top of the spray pipe (15). A liquid supply pipe (12) is fixedly installed on the top of the rotary joint (13).

2. The high-efficiency contact spray-type exhaust gas recovery device according to claim 1, characterized in that: A fixed plate (24) is fixedly installed on the left side of the coated polyester bag (27). A movable frame (20) is fixedly connected between the right sides of the two fixed plates (24). A roller (21) is movably connected to the middle end of the movable frame (20) through a bearing. A spring (26) is fixedly connected between the right side of the movable frame (20) and the upper right side of the inner cavity of the filter box (5). Guide rods (25) are slidably connected to both ends of the movable frame (20). The right side of the guide rods (25) is fixedly connected to the upper right side of the inner cavity of the filter box (5).

3. The high-efficiency contact spray-type exhaust gas recovery device according to claim 1, characterized in that: A second motor (18) is fixedly installed on the right end of the top of the outer surface of the filter box (5). A half cam (19) is fixedly installed at the output end of the second motor (18). A support shaft (23) is fixedly installed at the right end of the bottom of the half cam (19). The bottom of the support shaft (23) is movably connected to the bottom of the inner cavity of the fixed frame (22) through a bearing.

4. The high-efficiency contact spray-type exhaust gas recovery device according to claim 1, characterized in that: A collection box (4) is fixedly installed at the bottom of the inner cavity of the filter box (5).

5. The high-efficiency contact spray-type exhaust gas recovery device according to claim 1, characterized in that: A fixed frame (9) is fixedly connected to the top of the outer surface of the tower body (1). The surface of the spray pipe (15) is movably connected to the left end of the fixed frame (9) through a bearing. A second gear (14) is fixedly installed at the upper end of the spray pipe (15). A first motor (10) is fixedly installed at the right end of the top of the fixed frame (9). A first gear (11) is fixedly installed at the output end of the first motor (10). The first gear (11) meshes with the second gear (14).

6. The high-efficiency contact spray-type exhaust gas recovery device according to claim 1, characterized in that: An exhaust pipe (8) is fixedly connected to the upper end of the front surface of the tower body (1).

7. The high-efficiency contact spray-type exhaust gas recovery device according to claim 1, characterized in that: A base plate (3) is fixedly connected between the bottom of the outer surface of the tower body (1) and the bottom of the outer surface of the filter box (5).

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