Solvent rectification and recovery device

Abstract

The utility model discloses a solvent rectification recovery device which comprises supporting legs, an electric heater and a rectifying tower, the supporting legs are arranged at the lower end of the rectifying tower, the electric heater is fixed in the middle of the supporting legs, and the upper end of the electric heater is connected with the rectifying tower. The upper end of the rectifying tower comprises a key control panel arranged on the surface, a display screen arranged at the upper end of the key control panel, a feeding box and a recycling box, the feeding box and the recycling box are arranged on the two sides of the rectifying tower, a feeding hole is formed in the upper end of the feeding box, a liquid outlet is formed in the lower end of the recycling box, and the four supporting legs are cylindrical and arranged in an annular array mode. A thermal insulation layer is arranged in the rectifying tower, a rectifying cavity is formed in the thermal insulation layer, a heating cavity is formed in the lower end of the rectifying cavity, and the lower end of the heating cavity is connected with an electric heater; the device has the advantages that the rectification efficiency is improved, the energy loss is reduced, the yield is improved, and the content of impurities in a solvent is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of solvent rectification and recovery, and particularly relates to a solvent rectification and recovery device. Background Technique

[0002] Solvent rectification and recovery refers to heating the solvent through distillation, converting the organic components in the liquid solvent into gas state. After the high-temperature gaseous organic matter enters the condensation area, it liquefies and flows out, so as to collect clean organic solvents, realizing the regeneration of waste solvents, reducing costs while reducing environmental pollution.

[0003] At present, when the existing solvent rectification and recovery device conducts solvent recovery, it usually adopts the direct rectification method for recovery, directly recycling the rectification products. However, the solvent recovery rate is not good, the content is not high, and at the same time, the quality of solvent rectification is reduced.

[0004] Therefore, in view of the above problems, we propose a solvent rectification and recovery device to solve the problems raised above. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a solvent rectification and recovery device that improves rectification efficiency, reduces energy consumption and increases productivity, and further reduces the content of internal impurities in the solvent, so as to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a solvent rectification and recovery device, which includes support feet, an electric heater and a rectification tower. The support feet are arranged at the lower end of the rectification tower. The electric heater is fixed in the middle of the support feet and is connected to the rectification tower at the upper end. The upper end of the rectification tower includes a button control board arranged on the surface, a display screen arranged at the upper end of the button control board, and a feed box and a recovery box arranged on both sides of the rectification tower. A feed hole is arranged at the upper end of the feed box, and a liquid outlet is arranged at the lower end of the recovery box.

[0007] Preferably, the support feet are cylindrical, and four support feet are arranged in a circular array. Circular fixing pads are arranged at the lower ends of the support feet.

[0008] Preferably, a heat insulation layer is arranged inside the rectification tower, a rectification cavity is arranged inside the heat insulation layer, a heating cavity is arranged at the lower end of the rectification cavity, and the lower end of the heating cavity is connected to the electric heater.

[0009] Preferably, a steam collection plate is provided at the upper end inside the rectification chamber. The upper end of the steam collection plate is connected to a rectification pipe. The other side of the rectification pipe is connected to a condenser. The connection end of the condenser is connected to a recovery pipe. The other end of the recovery pipe is connected to the upper end of the recovery tank. The condenser includes a corrugated pipe provided inside and a cooling pipe provided outside.

[0010] Preferably, a steam collection pipe is provided at the upper end of the steam collection plate. A sealing ring is embedded on the steam collection pipe. The sealing ring is fixed inside the rectification tower. A connection plate is further provided at the top of the steam collection pipe. An installation post is provided on the connection plate. A fourth filter plate is provided in the middle inside the installation post. The rectification pipe is connected to the upper end of the installation post.

[0011] Preferably, a fixing plate and sealing screws are provided at the lower end of the steam collection pipe. The fixing plate is cross-shaped and arranged inside the steam collection pipe. The sealing screws are arranged in a circular array at four places. The sealing screws are fixedly arranged on the fixing plate. An air suction motor is provided at the upper end of the fixing plate. A connection column is provided in the middle at the lower end of the fixing plate. A fan blade is annularly arranged at the lower end of the connection column. The fan blade is arranged inside the steam collection plate. The air suction motor is connected to the fan blade through the connection column.

[0012] Preferably, a third filter plate is provided at the upper end inside the feed tank. A second filter plate is provided at the lower end of the third filter plate. A first filter plate is provided at the lower end of the second filter plate. A feed pipe is provided inside the feed tank at the lower end of the first filter plate. The feed pipe is connected to the inside of the rectification chamber. A recovery pipe arranged in a spiral ring shape is provided at the upper end inside the recovery tank. A liquid storage chamber is provided inside the recovery tank at the lower end of the recovery pipe. A reflux pipe is provided inside the recovery tank near the rectification tower. The reflux pipe is connected to the inside of the rectification chamber. Water pumps are provided on both the feed pipe and the reflux pipe. The third filter plate is a coarse filter for initially filtering out larger particles and impurities. Both the second filter plate and the installation post are activated carbon filters for adsorbing harmful substances such as pigments and compounds in organic solvents. The first filter plate is a precision filter for further filtering out fine particles and impurities through a fine filter material.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the steam collection plate and the filter plate arranged inside the feed box, the present utility model filters out impurities, particulate matters, pigments, etc. in the organic solvent through multi-stage filtering materials. The solvent filtered by the filter plate flows into the rectification cavity through the feed pipe on one side of the feed box, and the solvent in the rectification cavity is heated and rectified by the electric heater at the lower end of the rectification tower, so that the solvent after multi-stage filtering is heated and rectified, which is beneficial to more efficiently reducing the impurity content in the solvent, and further improving the actual use efficiency of the solvent recovery device, so as to achieve the purpose of purifying and recovering the organic solvent. At the same time, through the reflux pipe connected to the recovery box for secondary rectification, the purity of the solvent rectified for the second time is higher, the impurities and moisture are lower, the quality of the product is improved. Correspondingly, the solvent rectification and recovery device provided by the present utility model can improve the rectification efficiency, reduce energy consumption and increase the yield, and further reduce the impurity content in the solvent. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structural schematic diagram of a solvent rectification and recovery device of the present utility model;

[0015] Figure 2 is the internal structural schematic diagram of a solvent rectification and recovery device of the present utility model;

[0016] Figure 3 is Figure 2 the enlarged structural schematic diagram at A in

[0017] Figure 4 is Figure 3 the structural schematic diagram of the steam collection mechanism in

[0018] Figure 5 is Figure 2 the structural schematic diagram of the air suction mechanism in

[0019] Description of the reference numerals in the drawings: 1, support feet; 2, electric heater; 3, rectification tower; 4, button control board; 5, display screen; 6, feed box; 7, feed hole; 8, rectification pipe; 9, condenser; 10, recovery pipe; 11, recovery box; 12, heating cavity; 13, rectification cavity; 14, feed pipe; 15, first filter plate; 16, second filter plate; 17, third filter plate; 18, heat insulation layer; 19, steam collection plate; 20, corrugated pipe; 21, cooling pipe; 22, reflux pipe; 23, liquid storage cavity; 24, liquid outlet; 25, sealing ring; 26, connection plate; 27, mounting column; 28, fourth filter plate; 29, air suction motor; 30, fixing plate; 31, connecting column; 32, fan blade; 33, steam collection pipe; 34, sealing screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0021] As Figure 1-2 shown, this embodiment discloses a solvent rectification and recovery device, which includes support feet 1, an electric heater 2, and a rectification tower 3. The support feet 1 are arranged at the lower end of the rectification tower 3. The electric heater 2 is fixed in the middle of the support feet 1 and is connected to the upper end of the rectification tower 3. The upper end of the rectification tower 3 includes a button control panel 4 arranged on the surface, a display screen 5 arranged above the button control panel 4, and a feed box 6 and a recovery box 11 arranged on both sides of the rectification tower 3. The upper end of the feed box 6 is provided with a feed hole 7, and the lower end of the recovery box 11 is provided with a liquid outlet 24;

[0022] Among them, the support feet 1 are cylindrical, and four support feet 1 are arranged in a circular array. Circular fixed pads are arranged at the lower ends of the support feet 1. A heat insulation layer 18 is arranged inside the rectification tower 3, a rectification cavity 13 is arranged inside the heat insulation layer 18, a heating cavity 12 is arranged at the lower end of the rectification cavity 13, the lower end of the heating cavity 12 is connected to the electric heater 2, a steam collection plate 19 is arranged at the upper end inside the rectification cavity 13, the upper end of the steam collection plate 19 is connected to a rectification pipe 8, the other side of the rectification pipe 8 is connected to a condenser 9, the connection end of the condenser 9 is connected to a recovery pipe 10, the other end of the recovery pipe 10 is connected to the upper end of the recovery box 11, and the condenser 9 includes a corrugated pipe 20 arranged inside and a cooling pipe 21 arranged outside;

[0023] At the same time, a third filter plate 17 is arranged at the upper end inside the feed box 6, a second filter plate 16 is arranged below the third filter plate 17, a first filter plate 15 is arranged below the second filter plate 16, a feed pipe 14 is arranged inside the feed box 6 below the first filter plate 15, the feed pipe 14 is connected to the inside of the rectification cavity 13, a recovery pipe 10 arranged in a spiral ring shape is arranged at the upper end inside the recovery box 11, a liquid storage cavity 23 is arranged inside the recovery box 11 below the recovery pipe 10, and a reflux pipe 22 is arranged inside the recovery box 11 close to the rectification tower 3, and the reflux pipe 22 is connected to the inside of the rectification cavity 13.

[0024] In this embodiment, a circular fixing backing plate is provided at the lower end of the support leg 1 to improve the overall stability. At the same time, an electric heater 2 is provided in the middle of the support leg 1 to heat the rectification chamber 13 provided inside the rectification column 3. Through the feed box 6 provided on one side of the rectification column 3, the solvent to be rectified and recovered is injected through the feed hole 7 provided at the upper end of the feed box 6. Inside the feed box 6, a first filter plate 15, a second filter plate 16, and a third filter plate 17 are provided to perform multi-stage filtration on the injected solvent, filtering out impurities, particulate matters, pigments, etc. in the solvent to achieve the purpose of purifying and recovering organic solvents. Then, through the feed pipe 14 provided on one side of the feed box 6, the filtered solvent is transported to the inside of the rectification chamber 13 by a water pump. The rectification chamber 13 is heated through the heating cavity 12 provided above the electric heater 2, converting the organic components in the liquid solvent into a gas state. Then, the high-temperature gaseous solvent is transported to the inside of the condenser 9 through the rectification pipe 8 for cooling, converting the gas state into a liquid state and flowing out through the recovery pipe 10, flowing into the inside of the recovery box 11, and being stored through the liquid storage chamber 23. At the same time, through the reflux pipe 22 provided on one side of the recovery box 11, it is transported to the inside of the rectification chamber 13 by a water pump for secondary rectification of the solvent, further improving the purity and quality of the solvent, and discharging it through the liquid outlet 24 provided at the lower end of the recovery box 11. Embodiment

[0025] As Figure 1-5As shown in the figure, this embodiment discloses a solvent rectification and recovery device, which includes support feet 1, an electric heater 2, and a rectification tower 3. The support feet 1 are arranged at the lower end of the rectification tower 3. The electric heater 2 is fixed in the middle of the support feet 1 and is connected to the upper end of the rectification tower 3. The upper end of the rectification tower 3 includes a button control panel 4 arranged on the surface, a display screen 5 arranged at the upper end of the button control panel 4, and a feed box 6 and a recovery box 11 arranged on both sides of the rectification tower 3. The upper end of the feed box 6 is provided with a feed hole 7, and the lower end of the recovery box 11 is provided with a liquid outlet 24. The support feet 1 are cylindrical, and there are four support feet 1 arranged in a circular array. Circular fixing pads are arranged at the lower ends of the support feet 1. A heat insulation layer 18 is arranged inside the rectification tower 3, a rectification cavity 13 is arranged inside the heat insulation layer 18, a heating cavity 12 is arranged at the lower end of the rectification cavity 13, and the lower end of the heating cavity 12 is connected to the electric heater 2. A steam collection plate 19 is arranged at the upper inner side of the rectification cavity 13. A rectification pipe 8 is connected to the upper end of the steam collection plate 19. The other side of the rectification pipe 8 is connected to a condenser 9. The connection end of the condenser 9 is connected to a recovery pipe 10. The other end of the recovery pipe 10 is connected to the upper end of the recovery box 11. The condenser 9 includes a corrugated pipe 20 arranged inside and a cooling pipe 21 arranged outside. A third filter plate 17 is arranged at the upper inner side of the feed box 6. A second filter plate 16 is arranged at the lower end of the third filter plate 17. A first filter plate 15 is arranged at the lower end of the second filter plate 16. A feed pipe 14 is arranged inside the feed box 6 at the lower end of the first filter plate 15. The feed pipe 14 is connected to the inner side of the rectification cavity 13. A recovery pipe 10 arranged in a spiral ring shape is arranged at the upper inner side of the recovery box 11. A liquid storage cavity 23 is arranged inside the recovery box 11 at the lower end of the recovery pipe 10. A reflux pipe 22 is arranged on the inner side of the recovery box 11 close to the rectification tower 3. The reflux pipe 22 is connected to the inner side of the rectification cavity 13;

[0026] Among them, a steam collection pipe 33 is arranged at the upper end of the steam collection plate 19. A sealing ring 25 is embedded on the steam collection pipe 33. The sealing ring 25 is fixed to the inner side of the rectification tower 3. A connection disk 26 is further arranged at the top of the steam collection pipe 33. An installation column 27 is arranged on the connection disk 26. A fourth filter plate 28 is arranged in the middle of the inner side of the installation column 27. The rectification pipe 8 is connected to the upper end of the installation column 27. A fixing plate 30 and a sealing screw 34 are arranged at the lower end of the steam collection pipe 33. The fixing plate 30 is arranged in a cross shape inside the steam collection pipe 33. The sealing screws 34 are arranged in a circular array with four places. The sealing screws 34 are fixedly arranged on the fixing plate 30. An air suction motor 29 is arranged at the upper end of the fixing plate 30. A connection column 31 is arranged in the middle of the lower end of the fixing plate 30. A fan blade 32 is arranged in a ring shape at the lower end of the connection column 31. The fan blade 32 is arranged inside the steam collection plate 19. The air suction motor 29 is connected to the fan blade 32 through the connection column 31.

[0027] In this embodiment, through the steam collection plate 19 provided inside the rectification chamber 13 and the air suction motor 29 provided inside the steam collection plate 19, the air suction motor 29 drives the lower fan blades 32 to suck the high-temperature gaseous solvent into the rectification tube 8. At the same time, a fourth filter plate 28 is provided on the mounting post 27 inside the connection disk 26 to filter the gaseous solvent, further filtering out impurities, particulate matters, pigments, etc. in the solvent. The solvent rectification and recovery device of the present utility model can effectively improve the rectification efficiency, reduce energy consumption and increase the yield, and reduce the waste of organic solvents, reduce environmental pollution, and further reduce the content of impurities in the solvent, effectively improving the solvent recovery rate and content, and further improving the quality of solvent rectification.

[0028] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A solvent distillation recovery device, comprising a support leg (1), an electric heater (2) and a distillation tower (3), characterized in that: The support foot (1) is arranged at the lower end of the distillation tower (3); the electric heater (2) is fixed in the middle of the support foot (1) and the upper end is connected to the distillation tower (3); the upper end of the distillation tower (3) comprises a key control panel (4) arranged on the surface, a display screen (5) arranged on the upper end of the key control panel (4), and a feed box (6) and a recovery box (11) arranged on both sides of the distillation tower (3); the upper end of the feed box (6) is provided with a feed hole (7), and the lower end of the recovery box (11) is provided with a liquid outlet (24).

2. A solvent distillation recovery device according to claim 1, characterized in that: The support legs (1) are cylindrical, and are arranged at four locations in a circular array. The lower ends of the support legs (1) are each provided with a circular fixing pad.

3. A solvent distillation recovery device according to claim 1, characterized in that: A thermal insulation layer (18) is provided inside the distillation tower (3), a distillation chamber (13) is provided inside the thermal insulation layer (18), a heating cavity (12) is provided at the lower end of the distillation chamber (13), and the lower end of the heating cavity (12) is connected to the electric heater (2).

4. A solvent distillation recovery device according to claim 3, characterized in that: A steam collecting plate (19) is arranged at the upper end of the inner side of the distillation chamber (13); the upper end of the steam collecting plate (19) is connected to a distillation tube (8); the other side of the distillation tube (8) is connected to a condenser (9); the connection end of the condenser (9) is connected to a recovery tube (10); the other end of the recovery tube (10) is connected to the upper end of the recovery box (11); the condenser (9) comprises a corrugated tube (20) arranged on the inner side and a cooling tube (21) arranged on the outer side.

5. A solvent distillation recovery device according to claim 4, characterized in that: A steam collecting pipe (33) is arranged at the upper end of the steam collecting plate (19), a sealing ring (25) is embedded in the steam collecting pipe (33), the sealing ring (25) is fixed to the inner side of the distillation tower (3), a connecting plate (26) is arranged at the top end of the steam collecting pipe (33), a mounting column (27) is arranged on the connecting plate (26), a fourth filter plate (28) is arranged in the middle of the inner side of the mounting column (27), and the distillation pipe (8) is connected to the upper end of the mounting column (27).

6. A solvent distillation recovery device according to claim 5, characterized in that: A fixing plate (30) and a sealing screw (34) are provided at the lower end of the steam collection pipe (33), and the fixing plate (30) is arranged in a cross shape in the steam collection pipe (33). The sealing screws (34) are arranged at four locations in a ring array. The sealing screws (34) are fixedly arranged on the fixing plate (30). A suction motor (29) is provided at the upper end of the fixing plate (30). A connecting column (31) is provided in the middle of the lower end of the fixing plate (30). A fan blade (32) is provided in a ring shape at the lower end of the connecting column (31). The fan blade (32) is arranged on the inner side of the steam collection plate (19), and the suction motor (29) is connected to the fan blade (32) via the connecting column (31).

7. The solvent distillation recovery device according to claim 1, characterized in that: A third filter plate (17) is arranged at the upper end of the inner side of the feed box (6), a second filter plate (16) is arranged at the lower end of the third filter plate (17), a first filter plate (15) is arranged at the lower end of the second filter plate (16), a feed pipe (14) is arranged at the lower end of the first filter plate (15) on the inner side of the feed box (6), the feed pipe (14) is connected to the inner side of the distillation chamber (13), a recovery pipe (10) arranged in a spiral ring shape is arranged at the upper end of the inner side of the recovery box (11), a liquid storage chamber (23) is arranged in the recovery box (11) at the lower end of the recovery pipe (10), and a reflux pipe (22) is arranged on the inner side of the recovery box (11) close to the distillation tower (3), the reflux pipe (22) is connected to the inner side of the distillation chamber (13).

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