Organic solvent purification system

Abstract

The utility model relates to the technical field of organic solvent purification, in particular to an organic solvent purification system, which comprises a raw material barrel, a dehydration mixer and a distillation still, a pump body is arranged between the raw material barrel and the dehydration mixer, and the dehydration mixer is provided with a feeding port for adding a dehydrating agent. A tubular filter is arranged on one side, far away from the dehydration mixer, of the distillation kettle, and a condensation pipe is arranged between the distillation kettle and the tubular filter. The organic solvent purification system has the effect of improving the purification efficiency of the organic solvent.

Description

Technical Field

[0001] The present application relates to the technical field of organic solvent purification, and in particular to an organic solvent purification system. Background Art

[0002] Organic solvents can usually be purified by removing water to achieve secondary use. For organic solvents with moderate boiling points that need to be recycled and reused, distillation is an effective purification method. In the prior art, the organic solvent raw material to be treated is introduced into a distillation kettle through a conduit, the solvent evaporates under heating conditions, and then condenses and collects, thereby achieving separation of the target solvent from other components.

[0003] For some mixtures with similar boiling points or volatility, the effect of distillation purification may be limited, reducing the purity and quality of the target organic solvent, and the purification efficiency will also decrease accordingly. Utility Model Content

[0004] In order to improve the purification efficiency of organic solvents, the present application provides an organic solvent purification system.

[0005] The present application provides an organic solvent purification system that adopts the following technical solution:

[0006] An organic solvent purification system comprises a raw material barrel, a dehydration mixer and a distillation kettle, wherein a pump body is arranged between the raw material barrel and the dehydration mixer, a feeding port for adding a dehydrating agent is provided on the dehydration mixer, a tubular filter is arranged on the side of the distillation kettle away from the dehydration mixer, and a condenser is arranged between the distillation kettle and the tubular filter.

[0007] By adopting the above technical solution, the raw material barrel is used to hold the organic solvent raw material to be processed, and the pump body can pump the liquid to be processed into the dehydration mixer. The organic solvent is mixed with the dehydrating agent in the dehydration mixer to dehydrate the raw material. The dehydrated liquid is initially purified by distillation in the distillation kettle. When the liquid after distillation and condensation through the condenser passes through the tubular filter, water molecules are filtered out by the tubular filter, and organic solvents with larger molecular weights cannot pass through the filter element and remain in the tubular filter. The setting of the tubular filter can form a secondary filtration effect on the organic solvent liquid on the basis of the distillation treatment, thereby improving the purity of the organic solvent and the purification efficiency.

[0008] Furthermore, a liquid receiving barrel is arranged on the side of the tubular filter away from the distillation kettle, and the tubular filter includes a filter barrel and a tubular filter element. The tubular filter element is arranged in the filter barrel for filtering out waste liquid. A liquid inlet is opened at the bottom of the filter barrel, and a liquid outlet is opened at the top of the filter barrel. The liquid outlet is connected to one end of the condenser for discharging liquid. A liquid collecting pipe is arranged in the liquid outlet of the filter barrel, and the end of the liquid collecting pipe away from the filter barrel extends into the liquid receiving barrel.

[0009] By adopting the above technical solution, the tubular filter element is installed in the filter barrel to filter out the water and components with smaller molecular weight in the feed liquid. The setting of the liquid receiving barrel can receive the filtered waste liquid for centralized treatment or recycling. The liquid inlet is opened at the bottom of the filter barrel, and the liquid outlet is opened at the top of the filter barrel. Such a setting enables the filtrate to achieve the effect of bottom-in and top-out, so that the feed liquid is fully in contact with the tubular filter element, improving the filtering effect, thereby improving the purity of the organic solvent and improving the purification efficiency.

[0010] Furthermore, the filter barrel includes a barrel body and a barrel cover that are detachably connected, the liquid inlet is opened at the bottom of the barrel body, the liquid outlet is opened above the barrel cover, a placement plate is arranged in the barrel body, a socket is opened on the placement plate for the tubular filter element to be inserted and fixed, and a placement ring groove is opened on one side of the barrel body close to the barrel cover for the placement plate to be inserted and fixed.

[0011] By adopting the above technical solution, the barrel body and the barrel cover of the filter barrel are detachably connected, and the placement plate is arranged in the barrel body. The placement plate is inserted into the placement ring groove arranged in the barrel body to provide a placement platform for the tubular filter element. The tubular filter element is fixedly placed in the barrel body by inserting it into the socket of the placement plate, so as to achieve the effect of filtering the feed liquid in the filter barrel. A chamber for temporarily storing the filtrate is formed between the barrel cover and the placement plate. When the liquid level of the filtrate rises, the filtrate is discharged from the filter barrel through the liquid outlet above the barrel cover. The setting of the placement plate improves the placement stability of the tubular filter element in the filter barrel, which is conducive to improving the filtering effect, thereby improving the purity of the organic solvent and improving the purification efficiency.

[0012] Furthermore, the tubular filter element comprises a filter cartridge and an end cover, wherein the end cover is detachably connected to one end of the filter cartridge close to the barrel cover, and a flow port is formed on the end cover, and the flow port is communicated with the interior of the filter cartridge;

[0013] When the filter cartridge is inserted into the socket, the side of the end cover away from the barrel cover abuts against the placement plate.

[0014] By adopting the above technical solution, the tubular filter element includes a filter cartridge and an end cap, the end cap is detachably connected to the filter cartridge for easy replacement, and the opening of the flow port enables the filtrate to be filtered out smoothly. The filter cartridge is fixed in the socket of the placement plate by the end cap, which improves the placement stability of the tubular filter element in the filter barrel, is conducive to improving the filtering effect, thereby improving the purity of the organic solvent and improving the purification efficiency.

[0015] Furthermore, a first connecting ring plate is provided on one side of the barrel body close to the barrel cover, and a second connecting ring plate for mutual buckling is provided on the barrel cover, the first connecting ring plate and the second connecting ring plate are threadedly connected, and the placement ring groove is opened on the first connecting ring plate.

[0016] By adopting the above technical solution, the first connecting ring plate is arranged on the barrel body, and the second connecting ring plate is arranged on the barrel cover. The first connecting ring plate and the second connecting ring plate are threadedly connected to each other to achieve mutual engagement and detachability of the barrel cover and the barrel body.

[0017] Furthermore, a plurality of legs for supporting the filter barrel are circumferentially arranged on the outer wall of the barrel body.

[0018] By adopting the above technical solution, the legs arranged on the barrel body can lift the filter barrel above the ground, thereby making way for the liquid inlet and conduit and other components at the bottom of the barrel body.

[0019] Furthermore, a stirring mechanism for improving the efficiency of the dehydration reaction is provided in the dehydration mixer, and a stirring port for installing the stirring mechanism is opened on the dehydration mixer. The stirring mechanism includes a driving motor, a stirring shaft and an impeller. The motor is installed in the stirring port and fixedly connected to the dehydration mixer, the stirring shaft is rotatably connected to the driving motor and is located in the dehydration mixer, and the impeller is fixedly connected to the end of the stirring shaft away from the motor, and a gap is left between the impeller and the bottom of the dehydration mixer.

[0020] By adopting the above technical solution, the stirring mechanism drives the stirring shaft to rotate through the motor, thereby driving the impeller to achieve a stirring effect in the dehydration mixer. The setting of the stirring mechanism can make the feed liquid and the dehydrating agent fully combine, increase the reaction rate of the dehydrating agent and the feed liquid, and thus improve the dehydration and purification efficiency of the organic solution.

[0021] Furthermore, a sedimentation tank is provided on the side of the dehydration mixer away from the stirring port. The sedimentation tank is integrally arranged below the dehydration mixer and is interconnected with the dehydration mixer. A discharge port for discharging solid waste is provided on the sedimentation tank, and a flap is rotatably connected to the sedimentation tank for covering the discharge port.

[0022] By adopting the above technical solution, the dehydrating agent combines with the water in the liquid to form a precipitate, and the sedimentation tank is set so that the precipitate can accumulate at the bottom of the dehydration mixer. The discharge port is set at the bottom of the dehydration mixer, and the flap is opened and closed at the discharge port. The matching setting between the discharge port and the flap enables the precipitate to be taken out in time.

[0023] Furthermore, a plurality of supporting feet are circumferentially arranged on the outer wall of the dehydration mixer, the sedimentation tank is located between the supporting feet, and the height of the supporting feet is greater than the height of the sedimentation tank.

[0024] By adopting the above technical solution, a number of supporting feet are arranged on the outer wall of the dehydration mixer, and the height of the supporting feet is greater than the height of the sedimentation tank. The arrangement of the supporting feet can lift the dehydration mixer off the ground, thereby facilitating opening the flap and removing the precipitated material.

[0025] Furthermore, the dehydration mixer is provided with a sealing plug for sealing the feeding port.

[0026] By adopting the above technical solution, the feed port is convenient for adding dehydrating agent, and the setting of the sealing plug enables the dehydration mixer to maintain a sealed state, preventing the liquid from splashing from the feed port when the impeller stirs the liquid. The sealing plug prevents the loss of liquid, which is conducive to improving the dehydration and purification efficiency of the organic solution.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. When the liquid after distillation and condensation through the condenser passes through the tubular filter, water molecules are filtered out by the tubular filter, while organic solvents with larger molecular weight cannot pass through the filter element and remain in the tubular filter. On the basis of distillation treatment, the tubular filter performs secondary filtration on the liquid of organic solvent to improve the purity of organic solvent and improve purification efficiency;

[0029] 2. The tubular filter element is inserted into the socket of the placement plate, so that it is fixed in the filter barrel to filter the liquid. A chamber for temporarily storing the filtrate is formed between the barrel cover and the placement plate. When the liquid level of the filtrate rises, the filtrate is discharged from the filter barrel through the liquid outlet above the barrel cover. The placement plate improves the placement stability of the tubular filter element in the filter barrel, which is conducive to improving the filtering effect;

[0030] 3. The dehydration mixer is provided with a stirring mechanism, which drives the stirring shaft to rotate through the motor, thereby driving the impeller to achieve a stirring effect in the dehydration mixer, so that the feed liquid and the dehydrating agent are fully combined, thereby increasing the reaction rate of the dehydrating agent and the feed liquid, thereby improving the dehydration and purification efficiency of the organic solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1It is a schematic diagram of the overall structure of an organic solvent purification system according to an embodiment of the present application.

[0032] Figure 2 It is a cross-sectional schematic diagram of an organic solvent purification system according to an embodiment of the present application.

[0033] Figure 3 It is a schematic diagram of the structure explosion of the tubular filter in the embodiment of the present application.

[0034] Figure 4 It is a schematic diagram of the structure explosion of the tubular filter element in the embodiment of the present application.

[0035] Explanation of the reference numerals: 1. raw material barrel; 2. dehydration mixer; 21. feeding port; 22. stirring mechanism; 221. driving motor; 222. stirring shaft; 223. impeller; 23. stirring port; 24. sedimentation tank; 241. discharge port; 242. flip cover; 25. supporting foot; 26. sealing plug; 3. distillation kettle; 4. pump body; 5. tubular filter; 51. filter barrel; 511. barrel body; 5111. liquid inlet; 5112. first connecting ring plate; 51121. placement ring groove; 5113. supporting leg; 512. barrel cover; 5121. liquid outlet; 5122. second connecting ring plate; 52. tubular filter element; 521. filter element barrel; 522. end cover; 5221. flow port; 53. placement plate; 531. socket; 6. condenser; 7. liquid receiving barrel; 71. liquid collecting pipe. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-4 And embodiments, the present application is further described in detail.

[0037] The embodiment of the present application discloses an organic solvent purification system. The words such as "upper" and "lower" used to express the positional relationship in the embodiment are determined with reference to the placement and installation position of the organic solvent purification system when it is in normal use.

[0038] Reference Figure 1 and Figure 2 The organic solvent purification system includes a raw material barrel 1, a dehydration mixer 2, a distillation kettle 3, a tubular filter 5 and a liquid receiving barrel 7. The raw material barrel 1 is used to hold the liquid to be processed, and the raw material barrel 1 and the dehydration mixer 2 are connected by a conduit. A pump body 4 is provided between the raw material barrel 1 and the dehydration mixer 2, and the pump body 4 can pump the liquid in the raw material barrel 1 into the dehydration mixer 2.

[0039] Reference Figure 2The dehydration mixer 2 is provided with a feeding port 21 for adding a solid dehydrating agent, and a sealing plug 26 is provided in the feeding port 21 for sealing. The sealing plug 26 in this embodiment is preferably made of a plastic material with a certain elastic deformation ability, and the sealing plug 26 is plugged into the feeding port 21 for sealing.

[0040] The combination of the feed liquid and the dehydrating agent will form solid precipitates. In this embodiment, a sedimentation tank 24 is provided at the lower part of the dehydration mixer 2. The sedimentation tank 24 is fixedly connected to the dehydration mixer 2 and is interconnected. The sedimentation tank 24 provides a sedimentation space for the solid precipitates. A discharge port 241 for taking out the sediment is provided at the center of the bottom of the sedimentation tank 24. A flip cover 242 for covering the discharge port 241 is rotatably connected to the sedimentation tank 24.

[0041] A plurality of support legs 25 are evenly circumferentially arranged on the outer wall below the dehydration mixer 2 . In this embodiment, the number of the support legs 25 is preferably three, and each support frame is fixedly connected to the outer wall of the dehydration mixer 2 .

[0042] The dehydration mixer 2 is provided with a stirring mechanism 22 for mixing the dehydrating agent and the liquid feed, and the stirring mechanism 22 includes a driving motor 221, a stirring shaft 222 and an impeller 223. The dehydration mixer 2 is provided with a stirring port 23, which is provided at the center position above the dehydration mixer 2, and the feeding port 21 is provided at an adjacent position of the stirring port 23. The driving motor 221 is fixedly connected to the outside of the dehydration mixer 2, the stirring shaft 222 is rotatably connected to the bottom of the driving motor 221 and is penetrated inside the dehydration mixer 2, and the impeller 223 is fixedly connected to one end of the stirring shaft 222 away from the driving motor 221. In order to allow the liquid feed and the dehydrating agent to react fully, a space for stirring is left between the impeller 223 and the bottom of the dehydration mixer 2.

[0043] Reference Figure 1 and Figure 2 A condenser 6 is provided on the side of the still 3 away from the dehydration mixer 2. The condenser 6 in this embodiment is preferably a spherical condenser 6, which is suitable for condensing liquids of various boiling points. The two sides of the condenser 6 are connected to the still 3 and the tubular filter 5 through a conduit. After the feed liquid is distilled in the still 3 and the condenser 6, it enters the tubular filter 5 for secondary purification.

[0044] Reference Figure 2 and Figure 3The tubular filter 5 includes a filter barrel 51 and a tubular filter element 52, and the tubular filter element 52 is installed in the filter barrel 51. The filter barrel 51 includes a barrel body 511 and a barrel cover 512 that can be buckled with each other. The upper edge of the barrel body 511 is provided with a first connecting ring plate 5112, and the lower edge of the barrel cover 512 is provided with a second connecting ring plate 5122. The first connecting ring plate 5112 and the second connecting ring plate 5122 are threadedly connected, so that the barrel cover 512 is installed on the barrel body 511.

[0045] A liquid inlet 5111 is provided at the bottom of the barrel body 511, a liquid outlet 5121 is provided on the barrel cover 512, and a conduit on the side of the condenser 6 away from the distillation kettle 3 is connected to the liquid inlet 5111 at the bottom of the barrel body, so that liquid can enter from the bottom and exit from the top of the tubular filter 5, thereby improving the filtering effect of the liquid in the tubular filter element 52.

[0046] A plurality of legs 5113 are evenly arranged on the outer wall of the lower part of the barrel body 511. In this embodiment, the number of the legs 5113 is preferably three, and each leg 5113 is fixedly connected to the outer wall of the barrel body 511. The legs 5113 can raise the bottom of the barrel body 511, thereby making way for the conduit between the condenser tube 6 and the liquid inlet 5111.

[0047] A placement plate 53 for placing the tubular filter element 52 is provided in the barrel body 511, and a placement ring groove 51121 for the placement plate 53 to be inserted and fixed is provided on the inner wall of the first connecting ring plate 5112. The placement plate 53 can be horizontally placed in the placement ring groove 51121 and can be fixed with the first connecting ring plate 5112. A plurality of sockets 531 for the tubular filter element 52 to be vertically inserted and fixed are evenly provided on the placement plate 53. The number of tubular filter elements 52 can be a plurality, and the number of sockets 531 is set in one-to-one correspondence with the number of tubular filter elements 52.

[0048] The tubular filter element 52 includes a filter cartridge 521 and an end cap 522. The end cap 522 is snapped and detachably connected to one end of the filter cartridge 521 near the barrel cover 512. When the filter cartridge 521 is inserted into the socket 531, the end cap 522 and the placement plate 53 abut against each other to clamp and fix the tubular filter element 52 on the placement plate 53. A flow port 5221 for liquid to pass through is provided at the center axis of the end cap 522, and a chamber for temporary storage of liquid is formed between the placement plate 53 and the barrel cover 512. After water and other components with smaller molecular weight in the feed liquid penetrate through the side wall of the filter cartridge 521, they flow out through the flow port 5221, while the target component cannot penetrate the filter cartridge 521 and remains in the body to achieve secondary filtration.

[0049] A liquid collecting pipe 71 is connected to the liquid outlet 5121 above the barrel cover 512, and a liquid receiving barrel 7 is arranged on the side of the whole body away from the distillation kettle 3. The end of the liquid collecting pipe 71 away from the barrel cover 512 extends into the liquid receiving barrel 7 to receive the seepage liquid.

[0050] The implementation principle of an organic solvent purification system in the embodiment of the present application is as follows: the mixed components of the to-be-processed feed liquid are stored in the raw material barrel 1, the pump body 4 pumps the feed liquid in the raw material barrel 1 into the dehydration mixer 2, and after adding a solid dehydrating agent such as calcium oxide, the stirring mechanism 22 stirs the dehydrating agent and the feed liquid, so that the dehydrating agent and most of the water in the organic solvent are fully combined to form a solid precipitate, and after the feed liquid is introduced into the distillation kettle 3, the flip cover 242 is opened to take out the solid precipitate from the discharge port 241. The components with similar boiling points in the feed liquid can be separated through the distillation kettle 3 and the condenser 6 to achieve the first purification effect. The organic solvent purified for the first time passes through the tubular filter 5, and the molecular weight of the target component is relatively large, and it cannot be permeated by the filter cartridge 521, and the target organic solvent is retained in the barrel 511 of the tubular filter 5, achieving the second purification effect. A small amount of water and components with smaller molecular weight permeate the filter cartridge 521 and are discharged from the liquid receiving barrel 7, which is convenient for centralized treatment or recycling.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An organic solvent purification system, characterized in that: The invention comprises a raw material barrel (1), a dehydration mixer (2) and a distillation kettle (3); a pump body (4) is arranged between the raw material barrel (1) and the dehydration mixer (2); a feeding port (21) for adding a dehydrating agent is provided on the dehydration mixer (2); a tubular filter (5) is arranged on the side of the distillation kettle (3) away from the dehydration mixer (2); and a condenser (6) is arranged between the distillation kettle (3) and the tubular filter (5).

2. An organic solvent purification system according to claim 1, characterized in that: A liquid receiving bucket (7) is arranged on the side of the tubular filter (5) away from the distillation kettle (3). The tubular filter (5) comprises a filter barrel (51) and a tubular filter element (52). The tubular filter element (52) is arranged in the filter barrel (51) for filtering out water. A liquid inlet (5111) is provided at the bottom of the filter barrel (51), and a liquid outlet (5121) is provided at the top of the filter barrel (51). The liquid outlet (5121) is connected to one end of the condenser (6) for discharging liquid. A liquid collecting pipe (71) is arranged in the liquid outlet (5121) of the filter barrel (51), and one end of the liquid collecting pipe (71) away from the filter barrel (51) extends into the liquid receiving bucket (7).

3. An organic solvent purification system according to claim 2, characterized in that: The filter barrel (51) comprises a barrel body (511) and a barrel cover (512) which are detachably connected, the liquid inlet (5111) is provided at the bottom of the barrel body (511), the liquid outlet (5121) is provided above the barrel cover (512), a placement plate (53) is provided in the barrel body (511), a socket (531) is provided on the placement plate (53) for the tubular filter element (52) to be inserted and fixed, and a placement ring groove (51121) is provided on one side of the barrel body (511) close to the barrel cover (512) for the placement plate (53) to be inserted and fixed.

4. An organic solvent purification system according to claim 3, characterized in that: The tubular filter element (52) comprises a filter cartridge (521) and an end cover (522); the end cover (522) is detachably connected to one end of the filter cartridge (521) close to the barrel cover (512); a flow port (5221) is formed on the end cover (522); the flow port (5221) is communicated with the interior of the filter cartridge (521); When the filter cartridge (521) is inserted into the insertion port (531), the side of the end cover (522) away from the barrel cover (512) abuts against the placement plate (53).

5. An organic solvent purification system according to claim 3, characterized in that: A first connecting ring plate (5112) is arranged on one side of the barrel body (511) close to the barrel cover (512), and a second connecting ring plate (5122) for interlocking is arranged on the barrel cover (512), the first connecting ring plate (5112) and the second connecting ring plate (5122) are threadedly connected, and the placement ring groove (51121) is opened on the first connecting ring plate (5112).

6. An organic solvent purification system according to claim 3, characterized in that: A plurality of legs (5113) for supporting the filter barrel (51) are circumferentially arranged on the outer wall of the barrel body (511).

7. An organic solvent purification system according to claim 1, characterized in that: The dehydration mixer (2) is provided with a stirring mechanism (22) for improving the efficiency of the dehydration reaction. The dehydration mixer (2) is provided with a stirring port (23) for installing the stirring mechanism (22). The stirring mechanism (22) comprises a driving motor (221), a stirring shaft (222) and an impeller (223). The motor is installed in the stirring port (23) and is fixedly connected to the dehydration mixer (2). The stirring shaft (222) is rotatably connected to the driving motor (221) and is located in the dehydration mixer (2). The impeller (223) is fixedly connected to the end of the stirring shaft (222) away from the motor, and a gap is left between the impeller (223) and the bottom of the dehydration mixer (2).

8. An organic solvent purification system according to claim 7, characterized in that: A sedimentation tank (24) is provided on a side of the dehydration mixer (2) away from the stirring port (23); the sedimentation tank (24) is integrally arranged below the dehydration mixer (2) and is in communication with the dehydration mixer (2); a discharge port (241) for discharging solid waste is provided on the sedimentation tank (24); a flap (242) for covering the discharge port (241) is rotatably connected to the sedimentation tank (24).

9. An organic solvent purification system according to claim 8, characterized in that: A plurality of supporting feet (25) are circumferentially arranged on the outer wall of the dehydration mixer (2), the sedimentation tank (24) is located between the supporting feet (25), and the height of the supporting feet (25) is greater than the height of the sedimentation tank (24).

10. An organic solvent purification system according to claim 1, characterized in that: The dehydration mixer (2) is provided with a sealing plug (26) for sealing the feed port (21).

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