Extraction tower for recycling DMF (Dimethyl Formamide) based on metal pore plate filler

Abstract

The utility model relates to the technical field of extraction towers, and discloses a DMF (Dimethyl Formamide) recovery extraction tower based on a metal pore plate filler, which comprises an extraction tower shell, a feeding pipe and a liquid inlet pipe are arranged on the upper part of the surface of the extraction tower shell, a gas discharging pipe is arranged on the upper surface, and a liquid discharging pipe is arranged on the lower part; the metal pore plate filler layer is arranged in the inner cavity of the shell, so that the mass transfer area can be increased, two extracted phases are contacted more fully, and the extraction efficiency is improved. The spraying frame is installed at the liquid outlet end of the liquid inlet pipe, the first nozzles are evenly distributed at the bottom, the inclined second nozzles are installed between the first nozzles, liquid can be sprayed at different angles, the distribution range is enlarged, and the two-phase contact effect is enhanced. A motor is arranged in the middle of the spraying frame, a rotor of the motor is coaxially provided with a rotating plate, cleaning brushes are arranged on the rotating plate corresponding to the nozzles, and when the motor drives the rotating plate to rotate, the cleaning brushes can clean the nozzles, prevent blockage, ensure uniform and stable liquid spraying and maintain normal operation and extraction effect of the extraction tower.

Description

Technical Field

[0001] This utility model relates to the field of extraction tower technology, specifically to an extraction tower for DMF recovery based on metal perforated plate packing. Background Technology

[0002] Metal perforated plate packing significantly improves extraction efficiency in DMF recovery extraction towers due to its high mass transfer performance and low resistance characteristics. Its regular pore structure promotes full contact between the two phases, while the corrosion-resistant material ensures long-term stability in DMF environment. It is suitable for solvent recovery systems in chemical, pharmaceutical and other fields.

[0003] In existing DMF recovery extraction towers, there may be issues such as a small mass transfer area, resulting in insufficient contact between the two phases during extraction and difficulty in improving extraction efficiency. At the same time, the liquid spraying device is not designed reasonably, failing to spray the liquid effectively at multiple angles, limiting the distribution range of the liquid within the tower, and affecting the contact effect between the two phases. In addition, the nozzles lack an effective cleaning mechanism, which can easily lead to clogging during long-term use, affecting the uniformity and stability of liquid spraying, and thus interfering with the normal operation of the extraction tower and the extraction effect. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an extraction tower for DMF recovery based on metal perforated plate packing, which solves the problems mentioned in the background art, such as insufficient contact between the two phases during the extraction process, difficulty in improving extraction efficiency, limitation of liquid distribution range in the tower, and impact on the two-phase contact effect; in addition, the lack of an effective cleaning mechanism for the nozzles makes them prone to clogging during long-term use, affecting the uniformity and stability of liquid spraying.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an extraction tower for DMF recovery based on metal perforated plate packing, comprising:

[0006] An extraction tower shell, wherein a feed pipe is installed on the upper surface of the extraction tower shell and a gas outlet pipe is installed on the upper surface of the extraction tower shell;

[0007] A metal perforated plate packing layer is disposed in the inner cavity of the extraction tower shell, and a liquid outlet pipe is installed on the lower part of the surface of the extraction tower shell;

[0008] An inlet pipe is installed on the upper surface of the extraction tower shell. A spray frame is installed at the outlet end of the inlet pipe. First nozzles are evenly distributed at the bottom of the spray frame. Second nozzles are installed between the first nozzles. The second nozzles are designed to be inclined.

[0009] The motor is located in the middle of the spray frame. The rotor of the motor is coaxially mounted with a rotating plate. Cleaning brushes are installed on the upper surface of the rotating plate at positions corresponding to the first and second spray heads.

[0010] Preferably, a funnel is installed in the lower part of the inner cavity of the extraction tower shell, and the outlet end of the funnel is connected to the inlet end of the liquid outlet pipe, so that the liquid extracted by DMF can be concentrated through the funnel.

[0011] Preferably, a support frame is installed at the corresponding position of the inner cavity of the extraction tower shell and the metal perforated plate packing layer, and the metal perforated plate packing layer is located on the upper surface of the support frame, which facilitates the installation of the metal perforated plate packing layer.

[0012] Preferably, a mounting bracket is installed on the upper surface of the spray frame, and the motor is installed at the bottom of the mounting bracket, so that the motor can operate stably.

[0013] Preferably, each of the surface connection ends of the mounting bracket is equipped with a mounting block, and each mounting block is screwed with a bolt on its upper surface to fix the mounting bracket.

[0014] Preferably, sliders are installed on both sides of the rotating plate, and slide rails are installed on the inner wall of the extraction tower shell at positions corresponding to the sliders. The sliders are movably installed inside the slide rails, so that the rotating plate can rotate stably.

[0015] Compared with the prior art, this utility model provides an extraction tower for DMF recovery based on metal perforated plate packing, which has the following beneficial effects:

[0016] This DMF recovery extraction tower based on perforated metal plate packing increases the mass transfer area, allowing for more thorough contact between the two phases during extraction and improving extraction efficiency. A spray frame is installed at the outlet end of the inlet pipe, with first nozzles evenly distributed at the bottom of the frame. An inclined second nozzle is installed between the first nozzles, allowing the liquid to be sprayed at different angles, expanding the liquid distribution range within the tower and further enhancing the two-phase contact effect. A motor is installed in the middle of the spray frame, with a rotating plate coaxially mounted on the motor rotor. Cleaning brushes are installed on the upper surface of the rotating plate at positions corresponding to the first and second nozzles. When the motor drives the rotating plate to rotate, the cleaning brushes clean the first and second nozzles, preventing clogging and ensuring the uniformity and stability of liquid spraying, thereby maintaining the normal operation of the extraction tower and the extraction effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a bottom view of the spray frame structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the metal perforated plate packing layer of this utility model;

[0021] Figure 5 This is a schematic diagram of the installation structure of the rotating plate of this utility model.

[0022] In the diagram: 1. Extraction tower shell; 2. Feed pipe; 3. Gas outlet pipe; 4. Metal perforated plate packing layer; 5. Liquid outlet pipe; 6. Liquid inlet pipe; 7. Spray frame; 8. First spray head; 9. Second spray head; 10. Motor; 11. Rotating plate; 12. Cleaning brush; 13. Funnel; 14. Support frame; 15. Mounting frame; 16. Mounting block; 17. Bolt; 18. Sliding block; 19. Slide rail. Detailed Implementation

[0023] 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.

[0024] This utility model provides a technical solution: an extraction tower for DMF recovery based on metal perforated plate packing. (See also...) Figure 1 It includes an extraction tower shell 1, a feed pipe 2 installed on the upper surface of the extraction tower shell 1, and a gas outlet pipe 3 installed on the upper surface of the extraction tower shell 1.

[0025] Please see Figure 2 A metal perforated plate packing layer 4 is disposed in the inner cavity of the extraction tower shell 1, and a liquid discharge pipe 5 is installed on the lower part of the surface of the extraction tower shell 1.

[0026] The inlet pipe 6 is located on the upper surface of the outer shell 1 of the extraction tower. A spray frame 7 is installed at the outlet end of the inlet pipe 6. Please refer to [link / reference needed]. Figure 3 The bottom of the spray frame 7 is evenly provided with first spray heads 8, and second spray heads 9 are installed between each of the first spray heads 8. The second spray heads 9 are designed to be inclined.

[0027] Motor 10 is located in the middle of spray frame 7. A rotating plate 11 is coaxially mounted on the rotor of motor 10. (See also...) Figure 5 Cleaning brushes 12 are installed on the upper surface of the rotating plate 11 at positions corresponding to the first nozzle 8 and the second nozzle 9.

[0028] The metal orifice plate packing layer 4 uses stainless steel packing as a carrier to improve the stability, safety and durability of the equipment;

[0029] DMF-specific filler has a specific surface area more than three times that of PP balls, resulting in better absorption. PP balls may release VOCs when in contact with high-temperature gases, and often detach or melt.

[0030] A metal perforated plate packing layer 4 is installed inside the outer shell 1 of the extraction tower to increase the mass transfer area, allowing for more thorough contact between the two phases during extraction and improving extraction efficiency. A spray frame 7 is installed at the outlet end of the inlet pipe 6, with first nozzles 8 evenly distributed at the bottom of the spray frame 7 and second nozzles 9 with an inclined design installed between the first nozzles 8. This allows the liquid to be sprayed at different angles, expanding the distribution range of the liquid within the tower and further enhancing the contact effect between the two phases. A motor 10 is installed in the middle of the spray frame 7, with a rotating plate 11 coaxially mounted on the rotor of the motor 10. Cleaning brushes 12 are installed on the upper surface of the rotating plate 11 at positions corresponding to the first nozzles 8 and the second nozzles 9. When the motor 10 drives the rotating plate 11 to rotate, the cleaning brushes 12 can clean the first nozzles 8 and the second nozzles 9, preventing nozzle blockage and ensuring the uniformity and stability of liquid spraying, thereby maintaining the normal operation of the extraction tower and the extraction effect.

[0031] Please see Figure 2 A funnel 13 is installed in the lower part of the inner cavity of the extraction tower shell 1. The discharge end of the funnel 13 is connected to the inlet end of the liquid discharge pipe 5. The liquid extracted by DMF can be concentrated through the funnel 13.

[0032] Please see Figure 4 The inner cavity of the extraction tower shell 1 and the corresponding position of the metal orifice plate packing layer 4 are each equipped with a support frame 14. The metal orifice plate packing layer 4 is located on the upper surface of the support frame 14, which facilitates the installation of the metal orifice plate packing layer 4.

[0033] Please see Figure 5 A mounting bracket 15 is installed on the upper surface of the spray frame 7, and the motor 10 is installed at the bottom of the mounting bracket 15, so that the motor 10 can operate stably.

[0034] Mounting blocks 16 are installed on the surface connection ends of the mounting bracket 15, and bolts 17 are screwed onto the upper surface of the mounting blocks 16 to fix the mounting bracket 15.

[0035] Slider 18 is installed on both sides of the rotating plate 11. Slide rail 19 is installed on the inner wall of the extraction tower shell 1 at the corresponding position of the slider 18. The slider 18 is movably installed inside the slide rail 19, so that the rotating plate 11 can rotate stably.

[0036] During operation, the raw material enters through the feed pipe 2 on the upper surface of the extraction tower shell 1, and the liquid enters through the liquid inlet pipe 6. It is sprayed at different angles by the first nozzle 8 evenly distributed at the bottom of the spray frame 7 and the second nozzle 9 inclined between the first nozzle 8. At the same time, the motor 10 drives the rotating plate 11 to rotate, and the cleaning brush 12 at the corresponding position on the rotating plate 11 cleans and prevents blockage of the first nozzle 8 and the second nozzle 9. The liquid and the raw material are in full contact in the metal perforated plate packing layer 4, and the extracted gas is discharged from the gas outlet pipe 3.

[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] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An extraction tower for DMF recovery based on metal perforated plate packing, characterized in that, include: An extraction tower shell (1) is provided with a feed pipe (2) installed on the upper surface of the extraction tower shell (1) and a gas outlet pipe (3) installed on the upper surface of the extraction tower shell (1). A metal perforated plate packing layer (4) is disposed in the inner cavity of the extraction tower shell (1), and a liquid discharge pipe (5) is installed on the lower part of the surface of the extraction tower shell (1); The liquid inlet pipe (6) is located on the upper surface of the outer shell (1) of the extraction tower. A spray frame (7) is installed at the liquid outlet end of the liquid inlet pipe (6). First nozzles (8) are evenly distributed at the bottom of the spray frame (7). Second nozzles (9) are installed between the first nozzles (8). The second nozzles (9) are designed to be inclined. The motor (10) is located in the middle of the spray frame (7). The rotor of the motor (10) is coaxially mounted with a rotating plate (11). The upper surface of the rotating plate (11) is equipped with cleaning brushes (12) at positions corresponding to the first nozzle (8) and the second nozzle (9).

2. The extraction tower for DMF recovery based on metal perforated plate packing according to claim 1, characterized in that: A funnel (13) is installed in the lower part of the inner cavity of the extraction tower shell (1), and the discharge end of the funnel (13) is connected to the liquid inlet end of the liquid discharge pipe (5).

3. The extraction tower for DMF recovery based on metal perforated plate packing according to claim 1, characterized in that: The inner cavity of the extraction tower shell (1) and the corresponding position of the metal perforated plate packing layer (4) are each equipped with a support frame (14), and the metal perforated plate packing layer (4) is located on the upper surface of the support frame (14).

4. The extraction tower for DMF recovery based on metal perforated plate packing according to claim 1, characterized in that: The spray frame (7) is equipped with a mounting bracket (15) on its upper surface, and the motor (10) is mounted on the bottom of the mounting bracket (15).

5. An extraction tower for DMF recovery based on metal perforated plate packing according to claim 4, characterized in that: Mounting blocks (16) are installed on the surface connection ends of the mounting bracket (15), and bolts (17) are screwed onto the upper surface of the mounting blocks (16).

6. An extraction tower for DMF recovery based on metal perforated plate packing according to claim 1, characterized in that: Slider blocks (18) are installed on both sides of the rotating plate (11), and slide rails (19) are installed on the inner wall of the extraction tower shell (1) at the corresponding positions of the sliders (18).

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