Distillation separation tank for solvent recovery

Abstract

The utility model discloses a distillation separation tank for solvent recovery, and belongs to the technical field of pharmaceutical equipment. The problems that in the prior art, a distillation separation tank for solvent recovery is low in heating speed and uneven in heating are solved. A heating cavity is formed between the jacket and the tank body; an outer liquid outlet is formed in the upper side of the jacket; an outer liquid inlet is formed in the lower side of the jacket; a stirring motor is mounted at the top of the tank body and is connected with a stirring shaft; the heating pipe set comprises at least one heating pipe which is arranged at intervals in the circumferential direction and sequentially connected, each heating pipe comprises a plurality of U-shaped pipe sections which are arranged at intervals in the vertical direction, the U-shaped pipe sections extend in the horizontal direction and the direction of the stirring shaft, and the U-shaped pipe sections are arranged between every two adjacent stirring rods. And the head end and the tail end of the heating pipe group are respectively connected with the inner liquid inlet and the inner liquid outlet of the tank body.

Description

Technical Field

[0001] The utility model belongs to the technical field of pharmaceutical equipment, and in particular relates to a distillation separation tank for solvent recovery. Background Art

[0002] In the process of biopharmaceuticals, a large amount of solvent is needed. The solvent needs to be recovered after use. Solvent recovery not only reduces the production cost of the enterprise, but also avoids the pollution caused by the direct discharge of solvent into the environment. When the solvent is recovered, distillation is often used for recovery. The distillation method mainly utilizes the difference in boiling points between the solvent and other components, and realizes solvent recovery through two basic steps of heating evaporation and condensation. This recovery method is suitable for most organic solvents. When the solvent is recovered by distillation, equipment such as distillation separation tanks and condensers are required. When the current solvent recovery device is performing solvent recovery, the distillation separation tank has the problem of slow distillation separation efficiency. Many of the current distillation separation tanks for solvent recovery are only equipped with a jacket outside the tank body, resulting in slow heating speed and uneven heating of the solvent inside the tank body, which in turn leads to slow overall solvent separation efficiency. Summary of the Invention

[0003] The utility model aims to provide a solvent recovery distillation separation tank to overcome the problems of slow heating speed and uneven heating of the solvent recovery distillation separation tank in the prior art.

[0004] The utility model is realized by adopting the following technical scheme: a distillation separation tank for solvent recovery, comprising a tank body, a jacket is provided on the tank body, a heating chamber is provided between the jacket and the tank body, an external liquid outlet is installed on the upper side of the jacket, an external liquid inlet is installed on the lower side of the jacket, a stirring motor is installed on the top of the tank body, the stirring motor is connected to the stirring shaft, a plurality of stirring rods are installed on the stirring shaft at vertical intervals, a heating tube group is installed in the tank body, the heating tube group includes at least one heating tube that is spaced apart and connected in sequence along the circumferential direction, each heating tube includes a plurality of U-shaped tube sections that are spaced apart along the vertical direction, the U-shaped tube sections extend in the horizontal direction and toward the stirring shaft, the U-shaped tube section is between two adjacent stirring rods, and the head end and the tail end of the heating tube group are respectively connected to the internal liquid inlet and the internal liquid outlet of the tank body.

[0005] Furthermore, the heating tube assembly includes two heating tubes connected to each other.

[0006] Furthermore, the heating tube includes four heating tubes evenly distributed along the circumferential direction, and the four heating tubes 9 are connected in sequence.

[0007] Furthermore, at least one ultrasonic vibration rod is inserted into the tank body.

[0008] Furthermore, two ultrasonic vibration rods are inserted into the tank body, and the two ultrasonic vibration rods are symmetrically arranged.

[0009] Furthermore, a plurality of supports are installed on the outer side wall of the jacket at intervals along the circumferential direction, and rubber pads are installed on the bottoms of the supports.

[0010] Furthermore, a plurality of connecting plates are installed between the heating pipe and the inner wall of the tank.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] Compared with the solvent recovery distillation separation tank in the prior art, the utility model is provided with a jacket outside the tank body, and a heating tube group, a stirring shaft and an ultrasonic vibrating rod are added inside the tank body. By installing the heating tube group, the heating tube group can heat the inside of the tank body, thereby increasing the heating speed of the solvent inside the tank body and the heating area of ​​the solvent, thereby increasing the evaporation speed of the solvent;

[0013] The utility model installs a stirring shaft in the tank body, and the stirring motor drives the stirring rod on the stirring shaft to rotate, so as to stir the solvent in the tank body, so that the solvent in the tank body is heated more evenly, thereby increasing the evaporation rate of the solvent in the tank body;

[0014] The utility model arranges a plurality of U-shaped tube sections on the heating tube at intervals along the vertical direction, and the U-shaped tube sections extend horizontally and toward the stirring axis. The U-shaped tube sections are between two adjacent stirring rods. Through the above arrangement, the U-shaped tube sections on the heating tube can be extended as far as possible to the center of the tank body, which can effectively improve the heating uniformity of the heating tube.

[0015] The utility model is provided with an ultrasonic vibrating rod. By selecting a suitable vibration frequency, when the solvent is distilled and separated, the ultrasonic vibrating rod can accelerate the evaporation speed of the solvent through the vibration of the suitable frequency, and can also achieve a good defoaming effect;

[0016] The utility model is provided with an ultrasonic vibration rod. When the inside of the tank body needs to be cleaned, the ultrasonic vibration rod can perform very good cleaning on the tank body by selecting a suitable vibration frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a partial cross-sectional schematic diagram of the present utility model.

[0018] In the figure: 1. Tank body; 2. Jacket; 3. External liquid inlet; 4. External liquid outlet; 5. Stirring motor; 6. Stirring shaft; 7. Stirring rod; 8. Heating tube assembly; 9. Heating tube; 10. U-shaped pipe section; 11. Internal liquid inlet; 12. Internal liquid outlet; 13. Ultrasonic vibrating rod; 14. Support; 15. Rubber pad; 16. Connecting plate. DETAILED DESCRIPTION

[0019] In order to help those skilled in the art better understand the technical solutions of the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0020] A solvent recovery distillation separation tank comprises a tank body 1, which is used to heat and distill the solvent. The tank body 1 is also connected to a solvent storage tank via a pump. A steam outlet on the tank body 1 is connected via a pipeline to a condenser, a vacuum pump, and other equipment. The vacuum pump can achieve negative pressure distillation. A jacket 2 is provided on the exterior of the tank body 1, with a heating chamber defined between the jacket 2 and the tank body 1. An outgoing liquid inlet 4 is mounted on the upper side of the jacket 2, and an external liquid inlet 3 is mounted on the lower side of the jacket 2. The jacket 2 can heat the outer wall of the tank body 1.

[0021] A stirring motor 5 is installed on the top of the tank body 1, and the stirring motor 5 is connected to the stirring shaft 6. A plurality of stirring rods 7 are installed on the stirring shaft 6 at vertical intervals. The stirring rods 7 are arranged on the lower side of the stirring shaft 6. The stirring motor 5 drives the stirring rods 7 on the stirring shaft 6 to rotate to stir the solvent in the tank body 1, so that the solvent in the tank body 1 is heated more evenly, thereby increasing the evaporation rate of the solvent in the tank body 1.

[0022] A heating tube group 8 is installed in the tank body 1. The heating tube group 8 includes at least one heating tube 9 arranged at intervals in the circumferential direction and connected in sequence. The heating tube group 8 of the present invention may include two heating tubes 9 or four heating tubes 9. When two heating tubes 9 are provided, the two heating tubes 9 are connected to each other so that the two heating tubes 9 form a heating pipeline. When four heating tubes 9 are provided, the four heating tubes 9 are connected in sequence so that the four heating tubes 9 form a heating pipeline.

[0023] Each of the heating tubes 9 includes a plurality of U-shaped tube sections 10 arranged at intervals along the vertical direction. The U-shaped tube sections 10 extend horizontally and toward the stirring shaft 6. The U-shaped tube section 10 is between two adjacent stirring rods 7. The utility model arranges the U-shaped tube section 10 between two adjacent stirring rods 7 so that the U-shaped tube section 10 does not affect the rotation of the stirring rod 7 when extending toward the center of the tank body 1. The U-shaped tube section 10 extends from the outside to the inside, so that the U-shaped tube section 10 can heat the solvent at the center of the tank body 1, effectively improve the heating evaporation rate of the heating tube 9, and make the heating more uniform.

[0024] The head end and the tail end of the heating tube group 8 are respectively connected to the inner liquid inlet 11 and the inner liquid outlet 12 of the tank body 1.

[0025] At least one ultrasonic vibrating rod 13 is inserted into the tank body 1, and preferably two ultrasonic vibrating rods 13 are inserted into the tank body 1, and the two ultrasonic vibrating rods 13 are symmetrically arranged. The utility model is provided with an ultrasonic vibrating rod 13, and by selecting a suitable vibration frequency, when the solvent is distilled and separated, the ultrasonic vibrating rod 13 can accelerate the evaporation rate of the solvent through the vibration of the appropriate frequency, and can also have a good foam removal effect; the utility model is provided with an ultrasonic vibrating rod 13, and by selecting a suitable vibration frequency, the ultrasonic vibrating rod 13 can perform a very good cleaning of the tank body 1 when the interior of the tank body 1 needs to be cleaned, and the problem of the inconvenience of cleaning the heating tube group 8 is also well solved. The ultrasonic vibrating rod 13 is arranged outside the rotation radius of the stirring rod 7.

[0026] The outer wall of the jacket 2 is provided with a plurality of supports 14 spaced apart in the circumferential direction, and a rubber pad 15 is provided at the bottom of the support 14 . The utility model can reduce the vibration of the tank body 1 when the ultrasonic vibration rod 13 vibrates by installing the rubber pad 15 at the bottom of the support 14 .

[0027] A plurality of connecting plates 16 are installed between the heating tube 9 and the inner wall of the tank body 1 . The utility model can conveniently and firmly fix the heating tube group 8 in the tank body 1 by providing a plurality of connecting plates 16 .

Claims

1. A distillation separation tank for solvent recovery, comprising a tank body (1), characterized in that: The tank body (1) is provided with a jacket (2) outside, a heating chamber is provided between the jacket (2) and the tank body (1), an external liquid outlet (4) is provided on the upper side of the jacket (2), an external liquid inlet (3) is provided on the lower side of the jacket (2), a stirring motor (5) is provided on the top of the tank body (1), the stirring motor (5) is connected to the stirring shaft (6), a plurality of stirring rods (7) are provided on the stirring shaft (6) at vertical intervals, a heating tube group (8) is provided inside the tank body (1), the heating tube group (8) includes at least one heating tube (9) arranged at intervals along the circumferential direction and connected in sequence, each heating tube (9) includes a plurality of U-shaped tube segments (10) arranged at intervals along the vertical direction, the U-shaped tube segments (10) extend in the horizontal direction and in the direction of the stirring shaft (6), the U-shaped tube segment (10) is between two adjacent stirring rods (7), the head end and the tail end of the heating tube group (8) are respectively connected to the internal liquid inlet (11) and the internal liquid outlet (12) of the tank body (1).

2. The solvent recovery distillation separation tank according to claim 1, wherein: The heating tube assembly (8) comprises two heating tubes (9) connected to each other.

3. The solvent recovery distillation separation tank according to claim 1, wherein: The heating tube (9) comprises four heating tubes (9) evenly distributed along the circumferential direction, and the four heating tubes (9) are connected in sequence.

4. The solvent recovery distillation separation tank according to claim 1, wherein: At least one ultrasonic vibration rod (13) is inserted into the tank body (1).

5. The solvent recovery distillation separation tank according to claim 4, characterized in that: Two ultrasonic vibration rods (13) are inserted into the tank body (1), and the two ultrasonic vibration rods (13) are symmetrically arranged.

6. The solvent recovery distillation separation tank according to claim 1, characterized in that: A plurality of supports (14) are installed at intervals along the circumferential direction on the outer side wall of the jacket (2), and a rubber pad (15) is installed on the bottom of the support (14).

7. The solvent recovery distillation separation tank according to any one of claims 1 to 6, characterized in that: A plurality of connecting plates (16) are installed between the heating tube (9) and the inner wall of the tank body (1).

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