Waste gas purification device for recycling 3-hydroxypropionitrile

Abstract

The utility model relates to the technical field of 3-hydroxypropionitrile recovery, in particular to a waste gas purification device for 3-hydroxypropionitrile recovery, which comprises a support table and a box body, an acidic activated carbon plate, an alkaline activated carbon plate, a common activated carbon plate and a filter screen are sequentially arranged in the box body from top to bottom, an air pump is arranged above the box body, and an air inlet pipe is arranged below the filter screen. The entered waste gas sequentially passes through the filter screen, the common activated carbon plate, the alkaline activated carbon plate and the acidic activated carbon plate, and impurities in the filtered waste gas can be filtered through the filter screen; harmful gases such as VOCs, nitrogen oxides and sulfur dioxide contained in waste gas can be fully adsorbed and purified through the common activated carbon plate, the alkaline activated carbon plate and the acidic activated carbon plate, layered filtration and adsorption are performed through the activated carbon plates with different properties, and different types of harmful substances can be effectively treated; more comprehensive waste gas purification effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of 3-hydroxypropionitrile recovery technology, and in particular to a waste gas purification device for 3-hydroxypropionitrile recovery. Background Technology

[0002] 3-Hydroxypropionitrile is an important chemical intermediate widely used in the synthesis of other chemicals, such as cyanides and amino acids. The recovery of 3-hydroxypropionitrile involves its extraction from waste gas, waste liquid, or solid waste to reduce resource waste and environmental pollution.

[0003] A large amount of waste gas is generated during the recovery of 3-hydroxypropionitrile. Direct emission of these gases can cause environmental pollution. Therefore, the generated gases need to be purified. Currently, most traditional purification devices use simple filters and ordinary activated carbon layers for filtration and adsorption. However, since the generated waste gas contains a variety of gases such as volatile organic compounds, harmful gases, and irritating gases, the purification effect is poor, affecting the purification treatment effect. Utility Model Content

[0004] The purpose of this invention is to solve the problem of poor purification effect in the existing technology, which affects the purification treatment effect. It provides a waste gas purification device for the recovery of 3-hydroxypropionitrile. Through the layered filtration and adsorption of activated carbon plates with different properties, it can effectively treat different kinds of harmful substances and ensure a more comprehensive waste gas purification effect.

[0005] To achieve the above objectives, this utility model provides a waste gas purification device for the recovery of 3-hydroxypropionitrile, comprising a housing, wherein an acidic activated carbon plate, an alkaline activated carbon plate, a common activated carbon plate, and a filter screen are arranged sequentially from top to bottom inside the housing; an air pump is arranged above the housing, and an air inlet pipe is arranged below the filter screen; the acidic activated carbon plate, the alkaline activated carbon plate, and the common activated carbon plate are all arranged inside a placement frame, the placement frame being slidably connected to the housing via a first sliding plate, and a first handle is provided on the outside of the placement frame.

[0006] As a further description of the above technical solution: the box body is provided with a door on the outside, and a collection frame is provided at the bottom of the box body. The collection frame is slidably connected to the box body through a second sliding plate, and a second handle is connected to one side of the collection frame.

[0007] As a further description of the above technical solution: the inside of the box is provided with a first sliding groove adapted to the first sliding plate, and the bottom of the box is provided with a second sliding groove adapted to the second sliding plate.

[0008] As a further description of the above technical solution: a drive motor is provided above the filter screen, the drive motor is connected to one end of a lead screw, the other end of the lead screw is connected to the housing through a bearing seat, a drive block is provided on the lead screw, and a brush plate is connected below the drive block, the brush plate is in contact with the surface of the filter screen.

[0009] As a further description of the above technical solution: a limiting slide bar is provided on one side of the lead screw, the limiting slide bar is slidably connected to a limiting block, and the lower part of the limiting block is connected to a brush plate.

[0010] As a further description of the above technical solution: a cooling box is provided on one side of the box body, the air inlet pipe is located inside the cooling box, and a water inlet pipe and a water outlet pipe are provided on the cooling box.

[0011] As a further description of the above technical solution: a refrigeration box and a control box are provided on one side of the cooling box, a temperature detector is provided inside the cooling box, and a control panel is provided on the outside of the control box.

[0012] As a further description of the above technical solution: the intake pipe adopts a serpentine bend.

[0013] The above technical solution has the following advantages or beneficial effects:

[0014] This invention allows incoming waste gas to pass sequentially through a filter screen, a regular activated carbon plate, an alkaline activated carbon plate, and an acidic activated carbon plate. The filter screen removes impurities from the waste gas, while the regular, alkaline, and acidic activated carbon plates effectively adsorb and purify harmful gases such as VOCs, nitrogen oxides, and sulfur dioxide. By using multiple activated carbon plates with different properties for layered filtration and adsorption, different types of harmful substances can be effectively treated, ensuring a more comprehensive waste gas purification effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the waste gas purification device in one embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional view of a waste gas purification device in one embodiment of the present invention;

[0017] Figure 3 This is an internal schematic diagram of the waste gas purification device in one embodiment of the present invention;

[0018] Figure 4 for Figure 1 Schematic diagram of the structure of the medium-sized brush plate;

[0019] Figure 5 for Figure 1 A schematic diagram of the structure of the frame placed in the middle.

[0020] Legend:

[0021] 1. Chamber; 2. Acidic activated carbon plate; 3. Alkaline activated carbon plate; 4. Ordinary activated carbon plate; 5. Filter screen; 6. Air pump; 7. Air inlet pipe; 8. Placement frame; 9. First slide plate; 10. First handle; 11. Collection frame; 12. Second slide plate; 13. Second handle; 14. First slide groove; 15. Second slide groove; 16. Drive motor; 17. Lead screw; 18. Drive block; 19. Brush plate; 20. Limiting slide bar; 21. Limiting block; 22. Cooling box; 23. Water inlet pipe; 24. Water outlet pipe; 25. Refrigeration box; 26. Control box; 27. Temperature detector; 28. Control panel; 29. ​​Chamber door. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., 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 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. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] like Figure 1-5As shown, the waste gas purification device for 3-hydroxypropionitrile recovery of this utility model includes a box 1. Inside the box 1, from top to bottom, there are acidic activated carbon plates 2, alkaline activated carbon plates 3, ordinary activated carbon plates 4, and a filter screen 5. An air pump 6 is installed above the box 1, and an air inlet pipe 7 is installed below the filter screen 5. The acidic activated carbon plates 2, alkaline activated carbon plates 3, and ordinary activated carbon plates 4 are all installed inside a placement frame 8. The placement frame 8 is slidably connected to the box 1 through a first sliding plate 9, and a first handle 10 is installed on the outside of the placement frame 8.

[0026] In the technical solution of this utility model, the incoming waste gas sequentially passes through a filter screen 5, a common activated carbon plate 4, an alkaline activated carbon plate 3, and an acidic activated carbon plate 2. The filter screen 5 filters out impurities in the waste gas, while the common activated carbon plate 4, the alkaline activated carbon plate 3, and the acidic activated carbon plate 2 fully adsorb and purify harmful gases such as VOCs, nitrogen oxides, and sulfur dioxide contained in the waste gas. By using multiple activated carbon plates with different properties for layered filtration and adsorption, different types of harmful substances can be effectively treated, ensuring a more comprehensive waste gas purification effect. The effective purification of waste gas by this device can effectively reduce the emission of harmful gases in industrial production, which helps to protect air quality and the ecological environment.

[0027] Specifically, the placement frame 8 is slidably connected to the box body 1 via the first sliding plate 9, which makes it easy to remove the placement frame 8 and facilitates the cleaning and replacement of the acidic activated carbon plate 2, alkaline activated carbon plate 3 and ordinary activated carbon plate 4 inside the placement frame 8, thereby enhancing the practicality of the assembly.

[0028] Among them, acidic activated carbon is strongly acidic and can adsorb oxidizing gases and vapors, such as SO2, NOx, and H2S; alkaline activated carbon is an adsorbent obtained by treating the surface of activated carbon under alkaline conditions during the production process. Alkaline activated carbon is strongly alkaline and can adsorb acidic gases and vapors, such as HCl and HF; ordinary activated carbon is a highly efficient adsorbent with a porous structure, and the adsorption capacity of activated carbon mainly depends on its large number of pores.

[0029] like Figure 1 and Figure 2 As shown, specifically, the outer side of the box 1 is provided with a door 29, and the bottom of the box 1 is provided with a collection frame 11. The collection frame 11 is slidably connected to the box 1 via a second sliding plate 12, and a second handle 13 is connected to one side of the collection frame 11. The collection frame 11 can collect the fixed particles filtered out by the filter screen 5, and the second handle 13 can be used to easily pull out the collection frame 11 for cleaning. The box 1 can be sealed through the door 29.

[0030] The box body 1 has a first sliding groove 14 inside that is adapted to the first sliding plate 9, and a second sliding groove 15 at the bottom of the box body 1 that is adapted to the second sliding plate 12.

[0031] like Figure 2 and Figure 4 As shown, specifically, a drive motor 16 is installed above the filter screen 5. The drive motor 16 is connected to one end of a lead screw 17, and the other end of the lead screw 17 is connected to the housing 1 through a bearing seat. A drive block 18 is installed on the lead screw 17, and a brush plate 19 is connected below the drive block 18. The brush plate 19 is in contact with the surface of the filter screen 5. When the drive motor 16 works, it can drive the lead screw 17 to rotate. The rotation of the lead screw 17 can drive the drive block 18 to move. The drive block 18 will drive the brush plate 19 to move. The movement of the brush plate 19 can clean the mesh holes on the filter screen 5, clearing the blocked mesh holes on the filter screen 5 and enhancing the filtration effect of the filter screen 5.

[0032] like Figure 2 and Figure 4 As shown, specifically, a limiting slide bar 20 is provided on one side of the lead screw 17. The limiting slide bar 20 is slidably connected to the limiting block 21, and the lower part of the limiting block 21 is connected to the brush plate 19. The limiting slide bar 20 can limit the limiting block 21, and the limiting block 21 can limit the brush plate 19, thereby enhancing the stability of the brush plate 19 when it moves.

[0033] like Figure 1 and Figure 3 As shown, specifically, a cooling box 22 is provided on one side of the box 1, and part of the air inlet pipe 7 is located inside the cooling box 22. A water inlet pipe 23 and a water outlet pipe 24 are provided on the cooling box 22. The cooling water inside the cooling box 22 can cool down the gas entering through the air inlet pipe 7, so as to avoid the exhaust gas temperature entering the box 1 being too high and extend the service life of the activated carbon filter layer inside the box 1.

[0034] like Figure 2 and Figure 3 As shown, specifically, a refrigeration box 25 and a control box 26 are provided on one side of the cooling box 22. A temperature detector 27 is provided inside the cooling box 22, and a control panel 28 is provided on the outside of the control box 26. The temperature detector 27 can detect the temperature of the cooling water inside the cooling box 22. When the temperature of the cooling water inside the cooling box 22 is detected to be high, the control box 26 will control the refrigeration box 25 to work automatically to cool the liquid inside the cooling box 22.

[0035] Among them, the intake pipe 7 adopts a serpentine bend; the structure of the serpentine bend can provide a longer heat conduction path in a limited space.

[0036] Working principle: The incoming waste gas passes sequentially through filter screen 5, ordinary activated carbon plate 4, alkaline activated carbon plate 3, and acidic activated carbon plate 2. Filter screen 5 filters out impurities in the waste gas. Ordinary activated carbon plate 4, alkaline activated carbon plate 3, and acidic activated carbon plate 2 fully adsorb and purify harmful gases such as VOCs, nitrogen oxides, and sulfur dioxide contained in the waste gas. Through layered filtration and adsorption using activated carbon plates with different properties, different types of harmful substances can be effectively treated, ensuring a more comprehensive waste gas purification effect. The effective purification of waste gas by this device can effectively reduce the emission of harmful gases in industrial production, which helps to protect air quality and the ecological environment.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 process, method, article, or apparatus.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An exhaust gas purification device for 3-hydroxypropionitrile recovery, characterized by comprising: Including box (1), the box (1) inside is sequentially provided with acid activated carbon plate (2), alkaline activated carbon plate (3) and ordinary activated carbon plate (4) and filter screen (5) from top to bottom, the box (1) top is provided with suction pump (6), the filter screen (5) below is provided with air inlet pipe (7); The acid activated carbon plate (2), the alkaline activated carbon plate (3) and the ordinary activated carbon plate (4) are arranged in the placing frame (8), and the placing frame (8) is slidably connected with the box (1) by the first sliding plate (9), and the placing frame (8) is provided with the first handle (10) outside.

2. The off-gas purification device for 3-hydroxypropionitrile recovery according to claim 1, characterized by: The box (1) is provided with a box door (29) outside, and the box (1) is provided with a collecting frame (11) at the bottom, the collecting frame (11) is slidably connected with the box (1) by the second sliding plate (12), and the collecting frame (11) is connected with the second handle (13) on one side.

3. The off-gas purification device for 3-hydroxypropionitrile recovery according to claim 1, characterized by: The box (1) is internally provided with a first sliding groove (14) matched with the first sliding plate (9), and the box (1) is internally provided with a second sliding groove (15) matched with the second sliding plate (12).

4. The off-gas purification device for 3-hydroxypropionitrile recovery according to claim 1, characterized by: The filter screen (5) is provided with a driving motor (16) above, the driving motor (16) is connected with one end of a lead screw (17), the other end of the lead screw (17) is connected with the box (1) through a bearing seat, the lead screw (17) is provided with a driving block (18), the driving block (18) is connected with a brush plate (19) below, and the brush plate (19) is in contact with the surface of the filter screen (5).

5. The off-gas purification device for 3-hydroxypropionitrile recovery according to claim 4, characterized by: The lead screw (17) is provided with a limiting slide rod (20) on one side, the limiting slide rod (20) is slidably connected with a limiting block (21), and the limiting block (21) is connected with the brush plate (19) below.

6. The off-gas purification device for 3-hydroxypropionitrile recovery according to claim 1, characterized by: The box (1) is provided with a cooling box (22) on one side, part of the pipe body of the air inlet pipe (7) is located in the cooling box (22), and the cooling box (22) is provided with a water adding pipe (23) and a water draining pipe (24).

7. The off-gas purification apparatus for 3-hydroxypropionitrile recovery according to claim 6, characterized by: The cooling box (22) is provided with a refrigeration box (25) and a control box (26) on one side, the cooling box (22) is provided with a temperature detector (27) inside, and the control box (26) is provided with a control panel (28) outside.

8. The off-gas purification device for 3-hydroxypropionitrile recovery according to claim 1, characterized by: The air inlet pipe (7) is a serpentine bend pipe.

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