A plasticizer distillation apparatus

Abstract

This utility model discloses a plasticizer distillation device, including a distillation column, a feeding mechanism, a heating mechanism, a condensing mechanism, a discharging mechanism, and a temperature control system. The upper surface of the distillation column is provided with a top cover, and a steam exhaust pipe is located on the top of the top cover. A porous baffle is fixedly connected to the inner wall of the distillation column. This utility model effectively increases the gas-liquid mass transfer area and improves the separation effect of the plasticizer components by setting a heating chamber, a distillation chamber, and a separation chamber inside the distillation column, and by setting multiple layers of staggered corrugated plates in the separation chamber. This improves distillation efficiency and product purity. A temperature sensor monitors the temperature inside the distillation chamber in real time, and the controller precisely controls the heating power of the heating tubes based on the temperature signal, achieving precise control of the distillation temperature. This avoids product quality problems caused by temperature fluctuations and reduces the occurrence of side reactions.

Description

Technical Field

[0001] This utility model belongs to the field of chemical equipment technology, specifically relating to a plasticizer distillation device. Background Technology

[0002] Plasticizers are substances added during plastic processing to enhance the flexibility, plasticity, and other properties of plastics. In the production process of plasticizers, distillation is an important separation and purification step. Through distillation, impurities, unreacted raw materials, and components with different boiling points in the plasticizer can be separated, thereby obtaining high-purity plasticizer products.

[0003] Existing plasticizer distillation equipment has some problems in actual use. The temperature control of existing distillation equipment is not precise enough. During the distillation process, temperature fluctuations will affect the volatilization and condensation of various plasticizer components, which may easily lead to the decomposition of some components or side reactions, affecting product quality. Moreover, the distillation efficiency is low. Due to the unreasonable internal structural design of the distillation tower, the gas-liquid mass transfer effect is poor, and the various components in the plasticizer cannot be fully separated, making it difficult to improve product purity. At the same time, it prolongs the distillation time and reduces production efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention provides a plasticizer distillation device, including a distillation tower body, a feeding mechanism, a heating mechanism, a condensing mechanism, a discharging mechanism, and a temperature control system.

[0005] The upper surface of the distillation column is provided with a top cover, and a steam exhaust pipe is provided on the top of the top cover. A perforated baffle is fixedly connected to the inner wall of the distillation column. The interior of the distillation column is provided with a heating chamber, a distillation chamber and a separation chamber from bottom to top. The separation chamber is provided with multiple layers of corrugated plates.

[0006] The feeding mechanism includes a feeding pipe and a feeding pump. The feeding pipe extends through the side wall of the distillation column into the distillation chamber. The feeding pump is installed on the feeding pipe. The heating mechanism includes a heating tube and a temperature sensor. The temperature control system includes a controller. One end of the feeding pipe is fixedly connected to a dispersion tube. Several dispersion nozzles are provided on the side surface of the dispersion tube.

[0007] By dividing the distillation tower into a heating chamber, a distillation chamber, and a separation chamber, and using porous partitions for separation, segmented control of the plasticizer distillation process is achieved, optimizing the gas-liquid mass transfer path. The design of the dispersion tube and dispersion nozzle ensures that the raw material is evenly sprayed into the distillation chamber, expanding the heating area, shortening the heating time, and improving the distillation efficiency. The combination of temperature sensor and controller enables real-time monitoring and precise adjustment of the distillation temperature, avoiding product decomposition or side reactions caused by temperature fluctuations, and improving product purity.

[0008] The present invention is further configured such that the distillation column body is a vertically arranged hollow cylindrical structure, and the number of porous partitions is two.

[0009] Through the above technical solutions, the vertical hollow cylindrical structure conforms to the principles of fluid mechanics, reduces steam flow resistance, and the porous baffle design further strengthens the physical isolation between the chambers, prevents material mixing, and improves separation accuracy.

[0010] The present invention is further configured such that the heating chamber and the distillation chamber are separated by a porous partition, and the distillation chamber and the separation chamber are separated by a porous partition.

[0011] Through the above technical solution, the uniform distribution of the porous baffle allows the steam to disperse and gather multiple times during its ascent, increasing the gas-liquid contact area and promoting component separation, which is especially suitable for the distillation of high-boiling-point plasticizers.

[0012] The present invention is further configured such that the heating tube is disposed inside the heating chamber and the temperature sensor is disposed inside the distillation chamber.

[0013] With the above technical solution, the heating tube is located in the heating chamber and indirectly heats the distillation chamber through air conduction, avoiding coking caused by local overheating. The temperature sensor provides real-time feedback on the temperature of the distillation chamber, ensuring that the heating process is controllable.

[0014] The present invention is further configured such that the condensation mechanism includes a condenser pipe and a cooling water tank, one end of the condenser pipe is connected to a steam exhaust pipe, and the other end of the condenser pipe extends into the cooling water tank, and the cooling water tank is provided with a cooling water pump and a cooling water pipe.

[0015] Through the above technical solution, the design of the spiral-wound condenser tube of the cooling water pipe extends the contact path between the coolant and the steam, enhances the heat exchange effect, and the cooling water pump provides forced circulation, further improving the condensation speed and reducing energy consumption.

[0016] The present invention is further configured such that the output end of the cooling water pump is fixedly connected to the cooling water pipe, and the cooling water pipe is wound around the outside of the condenser pipe.

[0017] The present invention is further configured such that the discharge mechanism includes a finished product discharge pipe and a waste liquid pipe, one end of the finished product discharge pipe being connected to the separation chamber, and one end of the waste liquid pipe being connected to the separation chamber.

[0018] The present invention is further configured such that the controller is electrically connected to the temperature sensor and the heating tube respectively, and a support frame is fixedly connected to the side surface of the distillation column, and the controller is fixed on the support frame.

[0019] The beneficial effects of this utility model are as follows:

[0020] This invention effectively increases the gas-liquid mass transfer area and improves the separation effect of various plasticizer components by setting up a heating chamber, a distillation chamber, and a separation chamber inside the distillation column, and setting up multiple layers of corrugated plates arranged in an alternating pattern in the separation chamber. This improves distillation efficiency and product purity. The temperature in the distillation chamber is monitored in real time by a temperature sensor, and the heating power of the heating tube is precisely controlled by the controller according to the temperature signal. This achieves precise control of the distillation temperature, avoids product quality problems caused by temperature fluctuations, and reduces the occurrence of side reactions. Attached Figure Description

[0021] Figure 1 This is a first-view structural diagram of a plasticizer distillation device according to this utility model;

[0022] Figure 2 This is a second-view structural diagram of a plasticizer distillation device according to this utility model;

[0023] Figure 3 This is a partial structural schematic diagram of a plasticizer distillation device according to this utility model;

[0024] Figure 4 This is a structural diagram of the distillation tower body of a plasticizer distillation device according to this utility model;

[0025] Figure 5 yes Figure 4 Sectional view at point AA;

[0026] Figure 6 This is a structural diagram of the heating tube of a plasticizer distillation device according to this utility model;

[0027] Figure 7 This is a structural diagram of a porous partition plate in a plasticizer distillation device according to this utility model.

[0028] Reference numerals in the attached drawings: 1. Distillation column body; 2. Porous baffle; 3. Heating chamber; 4. Distillation chamber; 5. Separation chamber; 6. Heating tube; 7. Top cover; 8. Steam exhaust pipe; 9. Support frame; 10. Cooling water tank; 11. Condenser; 12. Cooling water pipe; 13. Controller; 14. Feed pump; 15. Feed pipe; 16. Dispersion pipe; 17. Dispersion nozzle; 18. Temperature sensor; 19. Waste liquid pipe; 20. Finished product discharge pipe. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] This embodiment of a plasticizer distillation apparatus includes a distillation tower body 1, a feeding mechanism, a heating mechanism, a condensing mechanism, a discharging mechanism, and a temperature control system.

[0031] The upper surface of the distillation column 1 is provided with a top cover 7, and a steam exhaust pipe 8 is provided on the top of the top cover 7. A porous baffle 2 is fixedly connected to the inner wall of the distillation column 1. The distillation column 1 is a vertically arranged hollow cylindrical structure. There are two porous baffles 2. The vertical hollow cylindrical structure conforms to the principles of fluid mechanics, reducing the steam flow resistance. The design of the porous baffle 2 further strengthens the physical isolation between the chambers, prevents material mixing, and improves the separation accuracy. The uniform distribution of the porous baffle 2 allows the steam to be dispersed and gathered multiple times during the rising process, increasing the gas-liquid contact area and promoting component separation. It is especially suitable for the distillation of high-boiling-point plasticizers.

[0032] The interior of the distillation column 1 is provided with a heating chamber 3, a distillation chamber 4 and a separation chamber 5 from bottom to top. The separation chamber 5 is provided with multiple corrugated plates. The heating chamber 3 and the distillation chamber 4 are separated by a porous partition 2. The distillation chamber 4 and the separation chamber 5 are also separated by a porous partition 2.

[0033] By dividing the distillation column 1 into a heating chamber 3, a distillation chamber 4, and a separation chamber 5, and using a porous partition 2 for separation, segmented control of the plasticizer distillation process is achieved, optimizing the gas-liquid mass transfer path. The design of the dispersion tube 16 and the dispersion nozzle 17 ensures that the raw material is evenly sprayed in the distillation chamber 4, expanding the heating area, shortening the heating time, and improving the distillation efficiency. The combination of the temperature sensor 18 and the controller 13 enables real-time monitoring and precise adjustment of the distillation temperature, avoiding product decomposition or side reactions caused by temperature fluctuations, and improving product purity.

[0034] The staggered arrangement of multiple corrugated plates in the separation chamber 5 greatly increases the contact area between steam and any condensate that may be present. As the steam rises, it comes into contact with the surface of the corrugated plates, and some high-boiling-point impurities or components that are not fully vaporized may be condensed or adhered to the corrugated plates, thereby achieving further separation and purification of the steam and improving the purity of the finished plasticizer product.

[0035] The feeding mechanism includes a feed pipe 15 and a feed pump 14. The feed pipe 15 extends through the side wall of the distillation column 1 into the distillation chamber 4. The feed pump 14 is installed on the feed pipe 15. The heating mechanism includes a heating pipe 6 and a temperature sensor 18. The heating pipe 6 is installed in the heating chamber 3, and the temperature sensor 18 is installed in the distillation chamber 4. The temperature control system includes a controller 13. One end of the feed pipe 15 is fixedly connected to a dispersion pipe 16. Several dispersion nozzles 17 are provided on the side surface of the dispersion pipe 16.

[0036] The heating tube 6 is spirally arranged and indirectly heats the distillation chamber 4 through air conduction, avoiding coking caused by local overheating. In conjunction with the temperature sensor 18, the temperature of the heating tube 6 is controlled by the controller 13 to ensure that the heating process is controllable.

[0037] The condensation mechanism includes a condenser pipe 11 and a cooling water tank 10. One end of the condenser pipe 11 is connected to the steam exhaust pipe 8, and the other end of the condenser pipe 11 extends into the cooling water tank 10. The cooling water tank 10 is equipped with a cooling water pump and a cooling water pipe 12. The output end of the cooling water pump is fixedly connected to the cooling water pipe 12. The cooling water pipe 12 is wrapped around the outside of the condenser pipe 11. The discharge mechanism includes a finished product discharge pipe 20 and a waste liquid pipe 19. One end of the finished product discharge pipe 20 is connected to the separation chamber 5, and one end of the waste liquid pipe 19 is connected to the separation chamber 5.

[0038] The cooling water tank 10 is wrapped with an insulation layer made of polyurethane material, which reduces heat loss from the cooling water, improves cooling efficiency, and reduces energy consumption.

[0039] The controller 13 is electrically connected to the temperature sensor 18 and the heating tube 6 respectively. A support frame 9 is fixedly connected to the side surface of the distillation column body 1. The controller 13 is fixed on the support frame 9. The controller 13, the temperature sensor 18, the heating tube 6, the feed pump 14, and the cooling water pump are all electrically connected to an external power source, as is known to those skilled in the art.

[0040] The working principle of this utility model is as follows: When feeding, the feed pump 14 is started, and the plasticizer raw material in the external plasticizer raw material storage tank is transported to the distillation chamber 4 through the feed pipe 15. The dispersion nozzle 17 located at one end of the distillation chamber 4 sprays the plasticizer raw material evenly in the distillation chamber 4, so that the raw material is more evenly distributed in the distillation chamber 4, laying a good foundation for the subsequent distillation process.

[0041] During the distillation stage, heating tube 6 starts working to heat the air in heating chamber 3. The heat is transferred to distillation chamber 4 through porous partition 2, indirectly heating the plasticizer raw material in distillation chamber 4. As the temperature rises, the components with lower boiling points in the plasticizer raw material vaporize into steam first. During this process, temperature sensor 18 in distillation chamber 4 monitors the temperature in real time and transmits the temperature signal to controller 13. Controller 13 adjusts the heating power of heating tube 6 in real time according to preset temperature parameters to ensure that the temperature in distillation chamber 4 is stable at a suitable distillation temperature, ensuring the accuracy of the distillation process and avoiding product quality problems and side reactions caused by temperature fluctuations.

[0042] During the separation stage, the vaporized steam rises through the through holes on the separation plate to the separation chamber 5. The multi-layered corrugated plates arranged in an alternating pattern in the separation chamber 5 greatly increase the contact area between the steam and any condensate that may be present. As the steam rises, it comes into contact with the surface of the corrugated plates. Some of the high-boiling-point impurities or components that are not fully vaporized may be condensed or adhere to the corrugated plates, thereby achieving further separation and purification of the steam and improving the purity of the finished plasticizer product.

[0043] After separation, the steam is discharged from the steam pipe 8 and enters the condenser pipe 11. The cooling water pump in the cooling water tank 10 delivers cooling water to the cooling water pipe 12 wrapped around the outside of the condenser pipe 11. The cooling water flows in the cooling water pipe 12, absorbing the heat of the steam in the condenser pipe 11, thus cooling and liquefying the steam.

[0044] During the discharge stage, the liquid plasticizer in the separation chamber 5 flows out through the finished product discharge pipe 20, while the residual liquid with a high boiling point that cannot be vaporized during the distillation process is discharged from the waste liquid pipe 19 at the bottom of the distillation tower 1.

[0045] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A plasticizer distillation apparatus characterized by: It includes a distillation tower body (1), a feeding mechanism, a heating mechanism, a condensing mechanism, a discharging mechanism, and a temperature control system; The upper surface of the distillation column (1) is provided with a top cover (7), and the top of the top cover (7) is provided with a steam exhaust pipe (8). A perforated partition (2) is fixedly connected to the inner wall of the distillation column (1). The interior of the distillation column (1) is provided with a heating chamber (3), a distillation chamber (4) and a separation chamber (5) from bottom to top. The separation chamber (5) is provided with multiple corrugated plates. The feeding mechanism includes a feed pipe (15) and a feed pump (14). The feed pipe (15) extends through the side wall of the distillation column (1) into the distillation chamber (4). The feed pump (14) is installed on the feed pipe (15). The heating mechanism includes a heating pipe (6) and a temperature sensor (18). The temperature control system includes a controller (13). One end of the feed pipe (15) is fixedly connected to a dispersion pipe (16). The side surface of the dispersion pipe (16) is provided with several dispersion nozzles (17).

2. A plasticizer distillation apparatus according to claim 1, wherein The distillation column body (1) is a vertically arranged hollow cylindrical structure, and the number of porous partitions (2) is two.

3. A plasticizer distillation apparatus according to claim 1, wherein The heating chamber (3) and the distillation chamber (4) are separated by a porous partition (2), and the distillation chamber (4) and the separation chamber (5) are separated by a porous partition (2).

4. A plasticizer distillation apparatus according to claim 1, wherein The heating tube (6) is located inside the heating chamber (3), and the temperature sensor (18) is located inside the distillation chamber (4).

5. A plasticizer distillation apparatus according to claim 1, wherein The condensation mechanism includes a condenser pipe (11) and a cooling water tank (10). One end of the condenser pipe (11) is connected to a steam exhaust pipe (8), and the other end of the condenser pipe (11) extends into the cooling water tank (10). The cooling water tank (10) is equipped with a cooling water pump and a cooling water pipe (12).

6. A plasticizer distillation apparatus according to claim 5, wherein The output end of the cooling water pump is fixedly connected to the cooling water pipe (12), and the cooling water pipe (12) is wrapped around the outside of the condenser pipe (11).

7. A plasticizer distillation apparatus according to claim 1, wherein The discharge mechanism includes a finished product discharge pipe (20) and a waste liquid pipe (19). One end of the finished product discharge pipe (20) is connected to the separation chamber (5), and one end of the waste liquid pipe (19) is connected to the separation chamber (5).

8. A plasticizer distillation apparatus according to claim 1, wherein The controller (13) is electrically connected to the temperature sensor (18) and the heating tube (6) respectively. A support frame (9) is fixedly connected to the side surface of the distillation column (1), and the controller (13) is fixed on the support frame (9).

Images