Medium and high concentration DMF purification equipment of onboard control system
By installing a fan device at the bottom of the distillation tower of the DMF purification equipment for stirring, the problem of insufficient reaction caused by DMF waste liquid deposition is solved, and a more efficient DMF purification effect is achieved.
Patent Information
- Application Number
- CN202421454294.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-06-25
AI Technical Summary
In the existing DMF purification technology, DMF waste liquid is prone to deposition at the bottom of the distillation tower, resulting in insufficient reaction and affecting the purification efficiency.
A medium- and high-concentration DMF purification equipment with an on-board control system is designed, and a fan device is installed at the bottom of the distillation tower for stirring to ensure sufficient solution reaction, and the contact area between the DMF solution and gas is increased through the fan blade.
The DMF liquid is prevented from deposition through fan stirring, improve reaction sufficiency, and increase the concentration of the DMF solution by increasing the contact area, thereby improving purification efficiency.
Smart Images
Figure CN222955938U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of DMF purification, in particular to a medium and high concentration DMF purification device for an on-board control system. Background Technique
[0002] DMF, namely dimethylformamide, is an organic compound and a colorless transparent liquid. It is both a widely used chemical raw material and an excellent solvent with a wide range of uses, and can be miscible with water and most organic solvents. However, DMF is toxic. To protect the ecological environment, promote the development of green industrialization, and improve production capacity, it is necessary to purify the used DMF solution.
[0003] At present, the DMF purification technologies at home and abroad generally adopt purification methods such as rectification, extraction, and adsorption. The rectification process is relatively complex. When rectifying with a rectification column, the DMF waste liquid is fed into the rectification column from the feed port, and then heated by a reboiler. It is easy to deposit at the bottom of the tower before entering the reboiler, resulting in insufficient reaction.
[0004] Therefore, a medium and high concentration DMF purification device for an on-board control system is proposed. A fan device is installed at the bottom of the rectification column for stirring to make the solution react fully. Content of the Utility Model
[0005] The purpose of the utility model is to provide a medium and high concentration DMF purification device for an on-board control system to solve the problems raised in the above background technique.
[0006] To solve the above technical problems, the utility model provides the following technical solution: A medium and high concentration DMF purification device for an on-board control system includes a rectification column tower body and a fan. A tower base is arranged at the bottom of the rectification column tower body. A fixing frame is installed on the tower base in a cross shape. The fixing frame is used to fix the fan. A driving motor is installed at the central position of the fixing frame.
[0007] According to the above technical solution, the fan has a total of 6 fan blades.
[0008] According to the above technical solution, a feeding pipeline is installed below the left side of the rectification column tower body. The other side of the feeding pipeline is connected to a reboiler. A support frame is fixed at the bottom of the reboiler. A discharge pipe is arranged at the top of the reboiler and is communicated with the rectification column.
[0009] According to the above technical solution, a tower top steam pipeline is arranged at the top of the rectification column tower body. The other side of the tower top steam pipeline is connected to a main condenser. A cold water inlet is arranged on the right side of the main condenser. A hot water return port is arranged below the main condenser.
[0010] According to the above technical solution, a reflux tank is connected below the main condenser through a pipeline for storing the reflux liquid.
[0011] According to the above technical solution, a material taking port is fixed on the side of the rectifying tower body for adding DMF waste liquid.
[0012] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: by arranging a fan for stirring, the present utility model prevents the DMF liquid from depositing at the bottom of the rectifier for a long time, making the reaction more sufficient; by arranging fan blades for stirring in the solution, the present utility model increases the contact area between the DMF solution and the gas, and improves the concentration of the DMF solution. Description of the Drawings
[0013] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:
[0014] Figure 1 is the overall front structural schematic diagram of the present utility model;
[0015] Figure 2 is the schematic diagram of the fan device of the present utility model;
[0016] Figure 3 is the sectional schematic diagram of the fan device of the present utility model;
[0017] In the figure: 1, material taking port; 2, rectifying tower body; 3, feeding pipeline; 4, reboiler; 5, support frame; 6, discharge pipe; 7, overhead steam pipeline; 8, main condenser; 9, cold water inlet; 10, hot water return port; 11, reflux tank; 12, fan; 13, fixing frame; 14, driving motor; 15, tower base. Detailed Embodiments
[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
[0019] Please refer to Figures 1 - 3, the present utility model provides a technical solution: a medium and high concentration DMF purification device for an on-board control system, including a distillation column tower body 2, a material taking port 1 is fixed on the side of the distillation column tower body 2, a feeding pipeline 3 is fixed below the distillation column tower body 2, a reboiler 4 is installed on the other side of the feeding pipeline 3, a support frame 5 is fixed below the reboiler 4, and a discharge pipe 6 is fixed above the reboiler 4 and is connected to the distillation column.
[0020] The top of the distillation column tower body 2 is fixed with a top steam pipeline 7, the other side of the top steam pipeline 7 is connected to a main condenser 8, the main condenser 8 is cylindrical, a cold water inlet 9 is arranged on the right side of the main condenser 8, and a hot water return port 10 is arranged below the main condenser 8, ensuring the normal operation of the entire condenser device;
[0021] The main condenser 8 is connected to a reflux tank 11 through a pipeline to store the reflux liquid;
[0022] A tower base 15 is arranged below the distillation column tower body 2, a fixing frame 13 is installed above the tower base 15, the fixing frame 13 is cross-shaped, a driving motor 14 is installed in the middle of the fixing frame 13 to control the start, stop and rotation speed of the stirring, and a fan 12 is installed above the driving motor 14.
[0023] Working principle:
[0024] The entire distillation column device is installed on the ground. When the distillation column is working, the staff sends the DMF waste liquid into the distillation column tower body 2 from the material taking port 1. The liquid flowing into the bottom of the tower enters the reboiler 4 through the feeding pipeline 3, is heated and evaporated into steam, and then returns to the distillation column tower body 2 through the discharge pipe 6. The reboiler 4 and the distillation column tower body 2 form a liquid phase cycle. The gas phase in the fractionating column 3 will be transported upward to the condenser 8, and the liquid phase will return to the bottom of the tower for circulation.
[0025] When the distillation column is operating, the fan 12 at the bottom of the tower is turned on through the control system, and the rotation speed of the fan 12 can be adjusted according to the feeding amount and the amount of liquid deposited at the bottom of the distillation column. Under the action of the driving motor 14, the fan 12 is in full contact with the bottom liquid. The fan prevents the bottom liquid from reacting insufficiently through stirring, and also improves the purification efficiency of DMF to a certain extent.
[0026] When the DMF gas reaches the top of the distillation column, it will enter the main condenser 8 through the top steam pipeline 7. The condensed gas will become liquid DMF, and the liquid DMF will enter the reflux tank 11 for storage, ensuring that a suitable reflux ratio can be maintained during the distillation process, further realizing the separation of steam and liquid, and ensuring the purity and stability of the reflux liquid.
[0027] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.
[0028] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A medium-high concentration DMF purification device with an onboard control system, comprising a distillation tower body (2) and a fan (12), characterized in that: A tower base (15) is arranged at the bottom of the distillation tower body (2), and a fixing frame (13) is installed on the tower base (15) in the shape of a cross. The fixing frame (13) is used to fix the fan (12), and a driving motor (14) is installed at the center of the fixing frame (13).
2. A medium-high concentration DMF purification device of a board-mounted control system according to claim 1, characterized in that: The fan (12) has a total of 6 blades.
3. A medium-high concentration DMF purification equipment of a board-mounted control system according to claim 2, characterized in that: A feed pipe (3) is installed at the lower left side of the distillation tower body (2); a reboiler (4) is connected to the other side of the feed pipe (3); a support frame (5) is fixed to the bottom of the reboiler (4); and a discharge pipe (6) is provided at the top of the reboiler (4) and is in communication with the distillation tower.
4. A medium-high concentration DMF purification device of a board-mounted control system according to claim 3, characterized in that: A tower top steam pipe (7) is arranged at the top of the distillation tower body (2), and a main condenser (8) is connected to the other side of the tower top steam pipe (7). A cold water inlet (9) is arranged on the right side of the main condenser (8), and a hot water reflux port (10) is arranged below the main condenser (8).
5. A medium-high concentration DMF purification device of a board-mounted control system according to claim 4, characterized in that: The lower part of the main condenser (8) is connected to a reflux tank (11) via a pipeline for storing reflux liquid.
6. A medium-high concentration DMF purification device with a board-mounted control system according to claim 5, characterized in that: A material intake port (1) is fixed on the left side of the distillation tower body (2) for adding DMF waste liquid.