Cyclohexane rectification separation device
By designing a cyclohexane distillation and separation unit, and utilizing components such as a distillation column, heating tank, and volatilization tank, the efficient separation of cyclohexane from impurities was achieved, solving the problem of cyclohexane recovery, reducing energy consumption, and meeting the requirements of green chemical industry.
Patent Information
- Application Number
- CN202423313437.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing technologies struggle to efficiently separate and recover complex mixtures of cyclohexane with other substances, making it difficult to achieve high purity in cyclohexane recovery. Furthermore, traditional methods are energy-intensive and do not align with the trend of green chemical development.
A cyclohexane distillation and separation device was designed, including components such as a distillation column, a heating tank, a volatilization tank, a cooling tank, and a splitting tank. By optimizing the structure and using technologies such as a rotating stirring shaft and an automatic exhaust valve, the device achieves efficient separation of cyclohexane from impurities and adopts energy-saving technologies to reduce energy consumption.
This method achieves efficient separation of cyclohexane from other impurities, yields high-purity cyclohexane products, reduces energy consumption, aligns with the trend of green chemical development, and improves purification efficiency and the practical performance of the equipment.
Smart Images
Figure CN223696813U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of cyclohexane separation, and specifically relates to a cyclohexane rectification and separation device. BACKGROUND
[0002] As an important organic solvent, cyclohexane is widely used in the manufacturing of rubber, paint, varnish, and the extraction of oil and essential oil, making it an ideal choice to replace benzene.
[0003] However, with the increasing use of cyclohexane, the mixture formed by mixing it with other substances, which is difficult to separate, also poses challenges for recycling and reuse. Cyclohexane is a colorless liquid with a pungent odor, insoluble in water, but miscible with many organic solvents, which makes it perform well in dissolving non-polar substances such as oil, resin, and wax, and thus is widely used as a solvent and diluent in the manufacturing of rubber, paint, and varnish. The low toxicity of cyclohexane makes it commonly used in industrial processes such as de-oiling, de-greasing, and de-painting, effectively reducing the exposure risk of harmful substances such as benzene.
[0004] However, in terms of recycling and reuse of cyclohexane, since it is often mixed with other substances to form a complex mixture, it poses great challenges for separation and purification. Traditional separation methods such as distillation and extraction have limited effect and are difficult to meet the high-purity recycling requirements.
[0005] Therefore, the utility model provides a cyclohexane rectification and separation device. Utility model content
[0006] In order to make up for the shortcomings of the prior art and solve at least one technical problem raised in the background.
[0007] The utility model solves its technical problem adopts the technical scheme that the utility model discloses a kind of cyclohexane rectification separation devices, including rectifying tower, the tray is equipped in the rectifying tower, inlet valve is fixedly connected in the rectifying tower side wall, the inlet valve is located in rectifying tower lateral wall middle section, the top of the gas phase outlet is equipped in the rectifying tower, the gas outlet pipeline is connected in the top of the gas phase outlet, the other end bottom of the gas outlet pipeline is connected cooling tank, the bottom of the cooling tank is connected with connecting pipeline, the bottom of the connecting pipeline is connected with shunt tank, the shunt tank side wall is connected with shunt pipeline, the shunt pipeline is connected with rectifying tower top end, the second discharge port pipeline is fixedly connected in the bottom of the shunt tank, the bottom of the rectifying tower is equipped with discharge port, the first discharge port pipeline is connected in the bottom of the discharge port, the first discharge port pipeline side wall is connected with heating tank, the top of the heating tank is equipped with connecting pipeline, the top of the connecting pipeline is connected with volatile tank, the top of the volatile tank is connected with steam pipeline, the steam pipeline is connected with rectifying tower side wall middle section, by the above structure, by optimization design, the efficient separation of cyclohexane and other impurities can be realized, high-purity cyclohexane product is obtained, energy-saving technology is used, energy consumption is reduced, and the development trend of green chemical industry is met.
[0008] Preferably, the heating tank side wall is connected with a motor, the motor output end is fixedly connected with a rotating shaft, the rotating shaft side wall is connected with a stirring shaft, the stirring shaft is provided with a plurality of uniform distribution on the rotating shaft side wall, by the above structure, the cyclohexane liquid is stirred by rotation to accelerate its volatilization, improve the purification efficiency, and increase the practicality and working efficiency of the device.
[0009] Preferably, the top end of the rotating shaft is fixedly connected with an L-shaped scraper, by the above structure, the addition of the cleaning brush plate can clean the inner wall of the heating tank, avoid the scaling of impurities, reduce the labor cost of device cleaning, and reduce the later cleaning work.
[0010] Preferably, the top of the volatile tank is provided with an exhaust port, by the above structure, the addition of the automatic opening and closing exhaust valve can release the pressure of the device, ensure the stability of the internal pressure, and improve the practicality and safety performance of the device.
[0011] Preferably, the bottom of the shunt tank is fixedly connected with a support rod, the support rod is provided with four, the bottom of the support rod is connected with a collection tank, the top of the collection tank is connected with the second discharge port pipeline, the side wall of the collection tank is provided with a discharge port valve, by the above structure, the produced high-purity solution can be safely stored, and the safety performance and practicality of the device are improved.
[0012] Preferably, the other end of the stirring shaft is connected with a stabilizing block, the bottom of the stabilizing block is fixedly connected to the inner wall of the heating tank, by the above structure, the device can more stably stir the solution when heating the solution, and the stability and practicality of the device are increased.
[0013] Preferably, the cooling tank is internally provided with a slope, which is arranged at the top end of the cooling tank 7, through the slope, the condensed cyclohexane liquid is guided, and the practicality of the device is improved.
[0014] The beneficial effects of the present utility model are as follows:
[0015] 1. The cyclohexane rectification separation device, through the optimization design, can realize efficient separation of cyclohexane and other impurities, obtain high-purity cyclohexane product, adopt energy-saving technology, reduce energy consumption, and meet the development trend of green chemical industry.
[0016] 2. The cyclohexane rectification separation device, through the rotation and stirring of the cyclohexane liquid, accelerates the volatilization, improves the purification efficiency, and increases the practicality and working efficiency of the device. BRIEF DESCRIPTION OF DRAWINGS
[0017] The present utility model will be further described below in combination with the drawings.
[0018] Figure 1 is the perspective view of the present utility model;
[0019] Figure 2 is the structure schematic view of the heating tank in the present utility model;
[0020] Figure 3 is the structure schematic view of the L-shaped scraper in the present utility model;
[0021] Figure 4 is the structure schematic view of the discharge port valve in the present utility model;
[0022] Figure 5 is the structure schematic view of the cooling tank in the present utility model;
[0023] In the drawing: 1, rectification tower; 2, first discharge port pipeline; 3, heating tank; 4, motor; 5, volatilization tank; 6, exhaust port; 7, cooling tank; 8, shunt tank; 9, collection tank; 10, gas outlet pipeline; 11, steam pipeline; 12, shunt pipeline; 13, discharge port valve; 14, inlet valve; 17, rotating shaft; 18, L-shaped scraper; 19, stirring shaft; 20, second discharge port pipeline; 21, support rod; 22, connecting pipeline; 23, stabilizing block. DETAILED DESCRIPTION
[0024] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0025] The specific embodiments are given below.
[0026] As Figures 1 to 5 shown, the cyclohexane rectification separation device of the embodiment of the present application comprises a rectification tower 1, the rectification tower 1 is internally provided with a tray, a feeding port valve 14 is fixedly connected to the side wall of the rectification tower 1, the feeding port valve 14 is located in the middle section of the side wall of the rectification tower 1, the top of the rectification tower 1 is provided with a gas phase outlet, the top of the gas phase outlet is connected with a gas outlet pipeline 10, the other end of the gas outlet pipeline 10 is connected with a cooling tank 7 at the bottom, the cooling tank 7 is connected with a connecting pipeline 22 at the bottom, the connecting pipeline 22 is connected with a shunt tank 8 at the bottom, the side wall of the shunt tank 8 is connected with a shunt pipeline 12, the shunt pipeline 12 penetrates through the top end of the rectification tower 1, the bottom of the shunt tank 8 is fixedly connected with a second discharge port pipeline 20, the bottom of the rectification tower 1 is provided with a discharge port, the bottom of the discharge port is connected with a first discharge port pipeline 2, the side wall of the first discharge port pipeline 2 is connected with a heating tank 3, the top of the heating tank 3 is provided with a connecting pipeline 22, the connecting pipeline 22 is connected with a volatilization tank 5 at the top, the top of the volatilization tank 5 is connected with a steam pipeline 11, the steam pipeline 11 penetrates through the middle section of the side wall of the rectification tower 1. In working, the organic solution is transported into the rectification tower 1 through the feeding port valve 14, and the solution is transmitted into the heating tank 3 through the discharge port at the bottom of the rectification tower 1, the organic solution is heated into a gaseous state by the heating tank 3, the gaseous organic solution is transmitted into the volatilization tank 5 through the connecting pipeline 22, and then is transmitted into the rectification tower 1 through the steam pipeline 11 after volatilization, and is converted into high-purity cyclohexane gas after rectification operation, and is transmitted into the gas outlet pipeline 10 through the gas phase outlet at the top of the rectification tower 1, and is transmitted into the cooling tank 7 through the gas outlet pipeline 10 again, and is condensed into high-purity cyclohexane solution, and then is transmitted into the shunt tank 8 through the connecting pipeline 22, and then is transmitted into the rectification tower 1 through the shunt pipeline 12 by the shunt tank 8 to maintain stable operating conditions in the tower, and the remaining solution is output through the second discharge port pipeline 20. Through the above structure, through the optimization design, the efficient separation of cyclohexane and other impurities can be realized, the high-purity cyclohexane product is obtained, the energy-saving technology is adopted, the energy consumption is reduced, and the development trend of green chemical industry is met.
[0027] As Figure 3As shown, the side wall of the heating tank 3 is connected with the motor 4, the output end of the motor 4 is fixedly connected with the rotating shaft 17, the side wall of the rotating shaft 17 is connected with the stirring shaft 19, the stirring shaft 19 is provided with a plurality of uniform distribution on the side wall of the rotating shaft 17, in working, the motor 4 is started, the motor 4 drives the rotating shaft 17 to rotate, the rotating shaft 17 drives the stirring shaft 19 fixedly connected with the side wall to rotate, the cyclohexane liquid is stirred, the evaporation is accelerated, the purification efficiency is improved, through the above structure, the cyclohexane liquid is stirred and rotated, the evaporation is accelerated, the purification efficiency is improved, the practicality and working efficiency of the device are increased.
[0028] As shown in the figure, Figure 3 The top end of the rotating shaft 17 is fixedly connected with the L-shaped scraper 18, in working, the motor 4 is started, the motor 4 drives the rotating shaft 17 to rotate, the rotating shaft 17 drives the L-shaped scraper 18 to rotate to clean the inner wall of the heating tank 3, the impurities are prevented from scaling, through the above structure, the cleaning brush plate is added to clean the inner wall of the heating tank 3, the impurities are prevented from scaling, the self-cleaning performance of the device is improved, the labor cost of cleaning the device is reduced, and the later cleaning work is reduced.
[0029] As shown in the figure, Figures 1 to 2 The top of the evaporation tank 5 is provided with the exhaust port 6, in working, when the internal pressure of the evaporation tank 5 is too high, the exhaust port 6 is automatically opened, the internal pressure of the evaporation tank 5 is released, the internal gas pressure is stabilized, through the above structure, the automatic exhaust valve is added to release the pressure of the device, the internal pressure is stabilized, the practicality and safety performance of the device are improved.
[0030] As shown in the figure, Figures 1 to 2 And Figure 4 The bottom of the shunt tank 8 is fixedly connected with the support rod 21, the support rod 21 is provided with four, the bottom of the support rod 21 is connected with the collecting tank 9, the top of the collecting tank 9 is connected with the second discharge port pipeline 20, the side wall of the collecting tank 9 is provided with the discharge port valve 13, in working, the separated solution flows into the collecting tank 9 through the second discharge port pipeline 20 for storage, the stored solution is extracted through the external pipeline or valve to the discharge port valve 13, through the above structure, the produced high-purity solution is safely stored, the safety performance and practicality of the device are improved.
[0031] As shown in the figure, Figure 3 The other end of the stirring shaft 19 is connected with the stabilizing block 23, the bottom of the stabilizing block 23 is fixedly connected with the inner wall of the heating tank 3, in working, the other end of the stirring shaft 19 is connected with the side wall of the stabilizing block 23, the stabilizing block 23 stabilizes the stirring shaft 19, the displacement of the stirring shaft 19 is prevented due to the horizontal installation, through the above structure, the device can more stably stir the solution when heating the solution, the stability and practicality of the device are increased.
[0032] As shown in the figure, Figure 5As shown, the cooling tank 7 is internally provided with a slope at the top end. During operation, the high-purity cyclohexane gas is cooled and adheres to the inner wall of the cooling tank 7. The cooled cyclohexane liquid flows into the bottom end of the cooling tank 7 through the self-weight of the liquid. Through the above structure, the condensed cyclohexane liquid is guided by the slope, thereby increasing the practicality of the device.
[0033] During operation, the organic solution is transported into the rectifying tower 1 through the inlet valve 14, and the solution is transported into the heating tank 3 through the outlet at the bottom of the rectifying tower 1. The heating tank 3 adds the organic solution inside, and heats the organic solution into a gaseous state. After the gaseous organic solution is transported into the volatilization tank 5 through the connecting pipeline 22 for volatilization, and then transported into the rectifying tower 1 through the steam pipeline 11 for rectification operation, the gaseous organic solution is converted into high-purity cyclohexane gas. The high-purity cyclohexane gas is transported into the outlet pipeline 10 through the gas outlet at the top of the rectifying tower 1, and then transported into the cooling tank 7 through the outlet pipeline 10 again. The high-purity cyclohexane gas is condensed into high-purity cyclohexane solution. After the high-purity cyclohexane solution is transported into the distribution tank 8 through the connecting pipeline 22, the distribution tank 8 transports part of the high-purity cyclohexane solution into the rectifying tower 1 through the distribution pipeline 12 to maintain the stable operating conditions in the tower. The remaining solution is output through the second outlet pipeline 20. The motor 4 is started, and the motor 4 drives the rotating shaft 17 to rotate. The rotating shaft 17 drives the stirring shaft 19 fixed to the side wall to rotate, stirs the cyclohexane liquid, accelerates the volatilization of the cyclohexane liquid, and improves the purification efficiency. The motor 4 is started, and the motor 4 drives the rotating shaft 17 to rotate. The rotating shaft 17 drives the L-shaped scraper 18 to rotate to clean the inner wall of the heating tank 3, so as to avoid the scaling of impurities. When the pressure in the volatilization tank 5 is too high, the exhaust port 6 is automatically opened to exhaust the volatilization tank 5, so as to ensure the stability of the internal gas pressure. The separated solution is flowed into the collection tank 9 through the second outlet pipeline 20 for storage. The stored solution is extracted through the external pipeline or valve to the outlet valve 13. The other end of the stirring shaft 19 is connected to the side wall of the stabilizing block 23, so that the stabilizing block 23 stabilizes the stirring shaft 19. The displacement of the stirring shaft 19 during stirring is prevented due to the horizontal installation of the stirring shaft 19. The high-purity cyclohexane gas is cooled and adheres to the inner wall of the cooling tank 7. The cooled cyclohexane liquid flows into the bottom end of the cooling tank 7 through the self-weight of the liquid.
[0034] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A cyclohexane rectification separation apparatus characterized by: The application relates to a distillation tower (1); the distillation tower (1) is internally provided with tower plates; an inlet valve (14) is fixedly connected to the side wall of the distillation tower (1); the inlet valve (14) is located in the middle section of the side wall of the distillation tower (1); a gas phase outlet is arranged at the top of the distillation tower (1); an air outlet pipeline (10) is connected to the top of the gas phase outlet; the other end of the air outlet pipeline (10) is connected to the bottom of a cooling tank (7); the bottom of the cooling tank (7) is connected with a connecting pipeline (22); the bottom of the connecting pipeline (22) is connected with a shunt tank (8); the side wall of the shunt tank (8) is connected with a shunt pipeline (12); the shunt pipeline (12) penetrates through the top end of the distillation tower (1); the bottom of the shunt tank (8) is fixedly connected with a second discharge outlet pipeline (20); the bottom of the distillation tower (1) is provided with a discharge outlet; the bottom of the discharge outlet is connected with a first discharge outlet pipeline (2); the side wall of the first discharge outlet pipeline (2) is connected with a heating tank (3); the top of the heating tank (3) is provided with a connecting pipeline (22); the top of the connecting pipeline (22) is connected with a volatilization tank (5); the top of the volatilization tank (5) is connected with a steam pipeline (11); the steam pipeline (11) penetrates through the middle section of the side wall of the distillation tower (1).
2. A cyclohexane rectification separation apparatus according to claim 1, characterized in that: The side wall of the heating tank (3) is connected with a motor (4); the output end of the motor (4) is fixedly connected with a rotating shaft (17); the side wall of the rotating shaft (17) is connected with a stirring shaft (19); the stirring shaft (19) is provided with a plurality of rotating shafts (17) uniformly distributed on the side wall.
3. A cyclohexane rectification separation apparatus according to claim 2, wherein: The top end of the rotating shaft (17) is fixedly connected with an L-shaped scraper (18).
4. A cyclohexane rectification separation apparatus as claimed in claim 1, wherein: The top of the volatilization tank (5) is provided with an exhaust port (6).
5. A cyclohexane rectification separation apparatus as claimed in claim 1, wherein: The bottom of the shunt tank (8) is fixedly connected with a support rod (21); the support rod (21) is provided with four support rods (21); the bottom of the support rod (21) is connected with a collecting tank (9); the top of the collecting tank (9) is connected with a second discharge outlet pipeline (20); the side wall of the collecting tank (9) is provided with a discharge outlet valve (13).
6. A cyclohexane rectification separation apparatus according to claim 2, wherein: The other end of the stirring shaft (19) is connected with a stabilizing block (23); the bottom of the stabilizing block (23) is fixedly connected to the inner wall of the heating tank (3).
7. A cyclohexane rectification separation apparatus as defined in claim 1, wherein: The inside of the cooling tank (7) is provided with an inclined surface; the inclined surface is arranged at the top end of the inside of the cooling tank (7).