Composite separation device for NMP waste liquid recovery

Abstract

The utility model discloses a composite separation device for NMP waste liquid recovery, which comprises a moving plate and tracks, the tracks are symmetrically arranged outside the moving plate, a stirring barrel body is movably installed inside the moving plate, the stirring barrel body penetrates through the moving plate and extends to the outside of the moving plate, and a first telescopic cylinder is arranged outside the stirring barrel body. According to the device disclosed by the utility model, the composite separation device can be conveniently moved to sequentially convey waste liquid, so that the convenience of sequentially conveying the waste liquid by moving the composite separation device is improved, and the waste liquid in the stirring barrel can be conveniently, conveniently and uniformly stirred; the convenience of uniformly stirring the waste liquid in the stirring barrel by the composite separation device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to composite separation device technical field, concretely is a kind of composite separation device for NMP waste liquid recovery. BACKGROUND

[0002] In the use of NMP, a large amount of waste liquid containing impurities will be produced, these impurities are diverse, including metal ions introduced in the production process, organic small molecules, and decomposition products of NMP itself in the use environment, on the one hand, direct discharge of NMP waste liquid can cause serious pollution to soil and water, and its biodegradability is poor, which may remain in the environment for a long time, affecting ecological balance, on the other hand, the procurement cost of NMP is high, and a large amount of waste liquid is directly discarded, which undoubtedly increases the production cost of enterprises and causes great waste of resources.

[0003] NMP waste liquid recovery device usually includes filtering device, rectification system, vacuum system and control system and other components, these systems work together to ensure stable operation of the device, improve recovery efficiency and purity. For example, the filtering device can remove solid impurities and suspended solids in the waste liquid to prevent them from interfering with subsequent processing; rectification column separates NMP from other impurities by heating and cooling; vacuum pump creates a negative pressure environment, reduces operating temperature, and reduces thermal decomposition and loss of NMP.

[0004] However, it does not solve the problem that the existing composite separation device is not convenient to move position for sequential delivery of waste liquid, which affects the convenience of the composite separation device moving position for sequential delivery of waste liquid, and is not convenient for uniform stirring of waste liquid in the stirring barrel, which affects the convenience of the composite separation device for uniform stirring of waste liquid in the stirring barrel. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of composite separation device for NMP waste liquid recovery, to solve the problem that the composite separation device is not convenient to move position for sequential delivery of waste liquid in the above background, which affects the convenience of the composite separation device moving position for sequential delivery of waste liquid, and is not convenient for uniform stirring of waste liquid in the stirring barrel, which affects the convenience of the composite separation device for uniform stirring of waste liquid in the stirring barrel.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a composite separation device for NMP waste liquid recovery, comprising a movable plate and a track. The track is symmetrically arranged on the outside of the movable plate. A stirring tank body is movably installed inside the movable plate. The stirring tank body extends through the movable plate to its outside. A first telescopic cylinder is arranged on the outside of the stirring tank body. A second telescopic cylinder is slidably installed inside the first telescopic cylinder. Two sets of distillation tanks are arranged outside the second telescopic cylinder. An extraction tank is arranged outside each of the distillation tanks. A membrane separation tank is arranged outside each of the extraction tanks. An output pipe is installed at the bottom of each of the distillation tanks, extraction tanks, and membrane separation tanks. A first electric pump is installed at the end of the output pipe away from the distillation tank. A second electric pump is installed at the end of the output pipe away from the extraction tank. A third electric pump is installed at the end of the output pipe away from the membrane separation tank. A first conveying pipe is installed at the output end of the first electric pump and is connected to the extraction tank. A second conveying pipe is installed at the output end of the second electric pump and is connected to the membrane separation tank.

[0007] Preferably, four sets of L-shaped plates are installed on the side wall of the movable plate, and a rolling wheel is movably installed on the side wall of one set of L-shaped plates. A driven wheel assembly is movably installed on the top of each L-shaped plate, and the driven wheel assembly is slidably connected to the track.

[0008] Preferably, a servo motor is installed on the side wall of the moving plate, the output end of the servo motor is connected to the rolling wheel, a mechanical valve is installed at the bottom of the mixing tank body, the bottom end of the mechanical valve is connected to the first telescopic cylinder, and a sealing ring is installed inside the first telescopic cylinder.

[0009] Preferably, the inside of the sealing ring is in contact with the second telescopic cylinder, a movable sleeve is installed on the side wall of the first telescopic cylinder, a threaded sleeve is installed on the side wall of the first telescopic cylinder below the movable sleeve, and a stepper motor is installed on the side wall of the second telescopic cylinder.

[0010] Preferably, the output end of the stepper motor is equipped with a threaded rod, which is threadedly connected to a threaded sleeve. The threaded rod extends into the interior of the movable sleeve and is movably connected thereto. A flow valve is installed at the bottom end of the second telescopic cylinder.

[0011] Preferably, a power motor is installed at the top of the mixing tank body, and a rotating column is installed at the output end of the power motor, the rotating column extending into the interior of the mixing tank body and being movably connected thereto.

[0012] Preferably, a support frame is fitted onto the surface of the rotating column, a scraper arm is provided on the outside of the support frame, and a stirring blade is fitted onto the surface of the rotating column inside the support frame.

[0013] Preferably, multiple sets of springs are symmetrically installed on the side wall of the support frame, and the side of each spring away from the support frame is connected to the scraper arm.

[0014] Compared with the prior art, the beneficial effects of this utility model are: this composite separation device not only realizes the convenient movement of the composite separation device for sequential transportation of waste liquid, improving the convenience of sequential transportation of waste liquid, but also facilitates the uniform stirring of the waste liquid inside the stirring tank, improving the convenience of uniform stirring of the waste liquid inside the stirring tank by the composite separation device.

[0015] (1) When using the composite separation device for NMP waste liquid recovery, the NMP waste liquid and ion exchange resin after analysis by inductively coupled plasma mass spectrometry (ICP-MS) and Fourier transform infrared spectroscopy (FT-IR) are poured into the interior of the stirring tank body for stirring. The mechanical valve is manually opened to let the stirred liquid flow into the first telescopic cylinder and the second telescopic cylinder. The flow valve is opened to quantitatively deliver the liquid to the interior of the distillation tank for distillation. The first electric pump is turned on to deliver the distilled liquid through the output pipe, the first electric pump and the first delivery pipe to the interior of the extraction tank for extraction. The second electric pump is turned on to deliver the extracted liquid through the output pipe, the second electric pump and the second delivery pipe to the interior of the membrane separation tank for membrane separation. The membrane-separated liquid is discharged through the output pipe and the third electric pump. The distillation technology is used to achieve the initial separation of NMP from most high-boiling-point impurities. Then, the extraction technology is used to further remove small organic molecule impurities. Finally, the membrane separation technology is used to finely purify NMP to remove residual trace impurities and moisture.

[0016] (2) The servo motor drives the rolling wheel to rotate, and the rolling wheel drives the L-shaped plate and the driven wheel assembly to move along the inside of the track. The driven wheel assembly drives the L-shaped plate, the moving plate, and the mixing tank body to move to a certain position. The stepper motor drives the threaded rod to rotate, and the threaded rod drives the stepper motor, the second telescopic cylinder, and the flow valve to move up and down. Under the sealing of the sealing ring, the second telescopic cylinder moves up and down inside the first telescopic cylinder, which facilitates the convenient movement of the waste liquid to be transported in sequence. This realizes the convenient movement of the composite separation device to transport the waste liquid in sequence, and improves the convenience of the composite separation device to transport the waste liquid in sequence.

[0017] (3) The power motor drives the rotating column to rotate, which in turn drives the support frame and the stirring blade to rotate. The support frame drives the spring and the scraper arm to rotate. Under the elastic support of the spring, the scraper arm scrapes the inner wall of the mixing tank body, which facilitates the uniform stirring of the waste liquid inside the mixing tank. This realizes the convenient and uniform stirring of the waste liquid inside the mixing tank by the composite separation device, and improves the convenience of the composite separation device in uniformly stirring the waste liquid inside the mixing tank. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a front view structural diagram of the present utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the distillation tank of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the mixing tank body of this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the first telescopic cylinder of this utility model;

[0023] Figure 6 This is a front view cross-sectional structural diagram of the mixing tank body of this utility model.

[0024] In the diagram: 1. Moving plate; 2. Track; 3. Mixing tank body; 4. First telescopic cylinder; 5. Second telescopic cylinder; 6. Distillation tank; 7. Extraction tank; 8. Membrane separation tank; 9. Output pipe; 10. First electric pump; 11. First conveying pipe; 12. Second electric pump; 13. Second conveying pipe; 14. Third electric pump; 15. Servo motor; 16. L-shaped plate; 17. Rolling wheel; 18. Driven wheel assembly; 19. Mechanical valve; 20. Sealing ring; 21. Movable sleeve; 22. Stepper motor; 23. Threaded rod; 24. Threaded sleeve; 25. Flow valve; 26. Power motor; 27. Rotating column; 28. Support frame; 29. ​​Stirring blade; 30. Spring; 31. Scraper arm. Detailed Implementation

[0025] 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.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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 of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] Example 1

[0029] Please see Figures 1-6 This utility model provides an embodiment of a composite separation device for NMP waste liquid recovery, comprising a movable plate 1 and a track 2. The track 2 is symmetrically arranged on the outside of the movable plate 1. A stirring tank body 3 is movably installed inside the movable plate 1, extending through the movable plate 1 to its outside. A first telescopic cylinder 4 is arranged on the outside of the stirring tank body 3. A second telescopic cylinder 5 is slidably installed inside the first telescopic cylinder 4. Two sets of distillation tanks 6 are arranged outside the second telescopic cylinder 5. An extraction tank 7 is arranged outside each of the distillation tanks 6, and a membrane is arranged outside each of the extraction tanks 7. The bottom of the separation tank 8, the distillation tank 6, the extraction tank 7, and the membrane separation tank 8 are all equipped with an output pipe 9. The end of the output pipe 9 away from the distillation tank 6 is equipped with a first electric pump 10, the end of the output pipe 9 away from the extraction tank 7 is equipped with a second electric pump 12, and the end of the output pipe 9 away from the membrane separation tank 8 is equipped with a third electric pump 14. The output end of the first electric pump 10 is equipped with a first conveying pipe 11, which is connected to the extraction tank 7. The output end of the second electric pump 12 is equipped with a second conveying pipe 13, which is connected to the membrane separation tank 8.

[0030] When using the composite separation device for NMP waste liquid recovery, the NMP waste liquid and ion exchange resin, after analysis by inductively coupled plasma mass spectrometry (ICP-MS) and Fourier transform infrared spectroscopy (FT-IR), are poured into the stirring tank body 3 for stirring. The mechanical valve 19 is manually opened to allow the stirred liquid to flow into the first telescopic cylinder 4 and the second telescopic cylinder 5. The flow valve 25 is opened to quantitatively deliver the liquid to the distillation tank 6 for distillation. The first electric pump 10 is turned on to deliver the distilled liquid through the output pipe 9, the first electric pump 10, and the first delivery pipe 11 to the extraction tank 7 for extraction. The second electric pump 12 is turned on to deliver the extracted liquid through the output pipe 9, the second electric pump 12, and the second delivery pipe 13 to the membrane separation tank 8 for membrane separation. The membrane-separated liquid is discharged through the output pipe 9 and the third electric pump 14. The distillation technology achieves the initial separation of NMP from most high-boiling-point impurities, followed by the further removal of small organic molecule impurities through extraction technology. Finally, membrane separation technology is used to process the NMP. Fine purification is carried out to remove residual trace impurities and moisture;

[0031] Four sets of L-shaped plates 16 are installed on the side wall of the movable plate 1, and a rolling wheel 17 is movably installed on the side wall of one set of L-shaped plates 16. A driven wheel assembly 18 is movably installed on the top of each L-shaped plate 16, and the driven wheel assembly 18 is slidably connected to the track 2.

[0032] A servo motor 15 is installed on the side wall of the moving plate 1. The output end of the servo motor 15 is connected to the rolling wheel 17. A mechanical valve 19 is installed at the bottom of the mixing tank body 3. The bottom of the mechanical valve 19 is connected to the first telescopic cylinder 4. A sealing ring 20 is installed inside the first telescopic cylinder 4.

[0033] The inside of the sealing ring 20 is in contact with the second telescopic cylinder 5. A movable sleeve 21 is installed on the side wall of the first telescopic cylinder 4. A threaded sleeve 24 is installed on the side wall of the first telescopic cylinder 4 below the movable sleeve 21. A stepper motor 22 is installed on the side wall of the second telescopic cylinder 5.

[0034] A threaded rod 23 is installed at the output end of the stepper motor 22. The threaded rod 23 is threadedly connected to the threaded sleeve 24. The threaded rod 23 extends into the interior of the movable sleeve 21 and is movably connected thereto. A flow valve 25 is installed at the bottom end of the second telescopic cylinder 5.

[0035] When it is necessary to move the position to transport waste liquid sequentially, the servo motor 15 is turned on. Supported by the L-shaped plate 16, the servo motor 15 drives the rolling wheel 17 to rotate. The rolling wheel 17 drives the L-shaped plate 16 and the driven wheel assembly 18 to move along the inside of the track 2. The driven wheel assembly 18 drives the L-shaped plate 16, the moving plate 1, and the mixing tank body 3 to move to a certain position. The stepper motor 22 is turned on. Supported by the second telescopic cylinder 5, the stepper motor 22 drives the threaded rod 23 to rotate. With the threaded connection between the threaded rod 23 and the threaded sleeve 24, and supported by the movable sleeve 21, the threaded rod 23 drives the stepper motor 22, the second telescopic cylinder 5, and the flow valve 25 to move up and down. With the sealing of the sealing ring 20, the second telescopic cylinder 5 moves up and down inside the first telescopic cylinder 4, which facilitates the convenient movement of the position to transport waste liquid sequentially. This realizes the convenient movement of the composite separation device to transport waste liquid sequentially, and improves the convenience of the composite separation device to transport waste liquid sequentially.

[0036] A power motor 26 is installed at the top of the mixing tank body 3, and a rotating column 27 is installed at the output end of the power motor 26. The rotating column 27 extends into the interior of the mixing tank body 3 and is movably connected thereto.

[0037] A support frame 28 is fitted on the surface of the rotating column 27. A scraper arm 31 is provided on the outside of the support frame 28. A stirring blade 29 is fitted on the surface of the rotating column 27 inside the support frame 28.

[0038] Multiple sets of springs 30 are symmetrically installed on the side wall of the support frame 28. The side of the springs 30 away from the support frame 28 is connected to the scraper arm 31.

[0039] When it is necessary to stir the waste liquid inside the mixing tank body 3, the power motor 26 is turned on. With the support of the mixing tank body 3, the power motor 26 drives the rotating column 27 to rotate. The rotating column 27 drives the support frame 28 and the stirring blade 29 to rotate. The support frame 28 drives the spring 30 and the scraper arm 31 to rotate. Under the elastic support of the spring 30, the scraper arm 31 scrapes the inner wall of the mixing tank body 3, which facilitates the uniform stirring of the waste liquid inside the mixing tank. This realizes the convenient and uniform stirring of the waste liquid inside the mixing tank by the composite separation device, and improves the convenience of uniform stirring of the waste liquid inside the mixing tank by the composite separation device.

[0040] Work steps

[0041] When using the composite separation device for NMP waste liquid recovery, the NMP waste liquid and ion exchange resin, after analysis by inductively coupled plasma mass spectrometry (ICP-MS) and Fourier transform infrared spectroscopy (FT-IR), are poured into the stirring tank body 3 for stirring. The mechanical valve 19 is manually opened to allow the stirred liquid to flow into the first telescopic cylinder 4 and the second telescopic cylinder 5. The flow valve 25 is opened to quantitatively deliver the liquid to the distillation tank 6 for distillation. The first electric pump 10 is turned on to deliver the distilled liquid through the output pipe 9, the first electric pump 10, and the first delivery pipe 11 to the extraction tank 7 for extraction. The second electric pump 12 is turned on to deliver the extracted liquid through the output pipe 9, the second electric pump 12, and the second delivery pipe 13 to the membrane separation tank 8 for membrane separation. The membrane-separated liquid is discharged through the output pipe 9 and the third electric pump 14. The distillation technology achieves the initial separation of NMP from most high-boiling-point impurities, followed by extraction technology to further remove small organic molecule impurities. Finally, membrane separation technology is used to process the NMP. Fine purification is performed to remove residual trace impurities and moisture. Servo motor 15 drives roller 17 to rotate. Roller 17 drives L-shaped plate 16 and driven wheel assembly 18 to move along the inside of track 2. Driven wheel assembly 18 drives L-shaped plate 16, moving plate 1, and mixing tank body 3 to move a certain position. Stepper motor 22 drives threaded rod 23 to rotate. Threaded rod 23 drives stepper motor 22, second telescopic cylinder 5, and flow valve 25 to move up and down. Under the sealing of sealing ring 20, the second telescopic cylinder 5 moves up and down inside the first telescopic cylinder 4. When it is necessary to stir the waste liquid inside the mixing tank body 3, power motor 26 drives rotating column 27 to rotate. Rotating column 27 drives support frame 28 and stirring blade 29 to rotate. Support frame 28 drives spring 30 and scraper arm 31 to rotate. Under the elastic support of spring 30, scraper arm 31 scrapes the inner wall of mixing tank body 3, which facilitates the uniform stirring of waste liquid inside the mixing tank, thus completing the use of the compound separation device.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite separation device for recovering NMP waste liquid, characterized in that: Including mobile board (1) and track (2), the outside of mobile board (1) is symmetrically provided with track (2), the inside of mobile board (1) is movably installed with stirring barrel body (3), stirring barrel body (3) extends through mobile board (1) to its outside, the outside of stirring barrel body (3) is provided with first telescopic cylinder (4), the inside of first telescopic cylinder (4) is slidably installed with second telescopic cylinder (5), the outside of second telescopic cylinder (5) is provided with two sets of rectifying tank (6), the outside of rectifying tank (6) is provided with extraction tank (7), the outside of extraction tank (7) is provided with membrane separation tank (8), the bottom end of rectifying tank (6), extraction tank (7), membrane separation tank (8) is installed with output pipeline (9), the end of output pipeline (9) away from rectifying tank (6) is installed with first electric pump (10), the end of output pipeline (9) away from extraction tank (7) is installed with second electric pump (12), the end of output pipeline (9) away from membrane separation tank (8) is installed with third electric pump (14), the output end of first electric pump (10) is installed with first conveying pipeline (11), first conveying pipeline (11) is connected with extraction tank (7), the output end of second electric pump (12) is installed with second conveying pipeline (13), second conveying pipeline (13) is connected with membrane separation tank (8).

2. The composite separation device for recovering NMP waste solution according to claim 1, characterized in that: The side wall of the mobile board (1) is provided with four groups of L-shaped plates (16), and the side wall of one group of L-shaped plates (16) is movably provided with a rolling wheel (17), the top end of the L-shaped plate (16) is movably provided with a driven wheel assembly (18), and the driven wheel assembly (18) is slidably connected with the track (2).

3. The composite separation device for recovering NMP waste solution according to claim 2, characterized in that: The side wall of the mobile board (1) is provided with a servo motor (15), the output end of the servo motor (15) is connected with the rolling wheel (17), the bottom end of the stirring barrel body (3) is provided with a mechanical valve (19), the bottom end of the mechanical valve (19) is connected with the first telescopic cylinder (4), and the inside of the first telescopic cylinder (4) is provided with a sealing ring (20).

4. The composite separation device for recovering NMP waste solution according to claim 3, characterized in that: The inside of the sealing ring (20) is in contact with the second telescopic cylinder (5), the side wall of the first telescopic cylinder (4) is provided with a movable sleeve (21), the side wall of the first telescopic cylinder (4) below the movable sleeve (21) is provided with a threaded sleeve (24), and the side wall of the second telescopic cylinder (5) is provided with a stepping motor (22).

5. The composite separation device for recovering NMP waste solution according to claim 4, characterized in that: The output end of the stepping motor (22) is provided with a threaded rod (23), the threaded rod (23) is threadedly connected with the threaded sleeve (24), the threaded rod (23) extends into the inside of the movable sleeve (21) and is movably connected therewith, and the bottom end of the second telescopic cylinder (5) is provided with a flow valve (25).

6. The composite separation device for recovering NMP waste solution according to claim 1, characterized in that: The top end of the stirring barrel body (3) is provided with a power motor (26), the output end of the power motor (26) is provided with a rotating column (27), and the rotating column (27) extends into the inside of the stirring barrel body (3) and is movably connected therewith.

7. The composite separation device for recovering NMP waste solution according to claim 6, characterized in that: The surface of the rotating column (27) is sleeved with a supporting frame (28), the outer part of the supporting frame (28) is provided with a scraping arm (31), and the inner part of the supporting frame (28) is sleeved with stirring blades (29) on the surface of the rotating column (27).

8. The composite separation device for recovering NMP waste solution according to claim 7, characterized in that: A plurality of groups of springs (30) are symmetrically installed on the side walls of the supporting frame (28), and the springs (30) are connected with the scraping arms (31) away from the supporting frame (28).

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