Ethylene glycol continuous refining device

Abstract

The utility model discloses an ethylene glycol continuous refining device, which relates to the technical field of chemical product production and comprises a refining tank, a flow collecting cover is fixedly arranged at the top of the refining tank, a guide pipe is fixedly connected to the top of the flow collecting cover, and the section of the guide pipe is of a semi-arc-shaped structure. A condensation bin is fixedly connected to the end, away from the flow collecting cover, of the guide pipe, a drainage pipe is fixedly arranged on the side face of the bottom of the condensation bin, and a condensation assembly is arranged in the condensation bin in a lifting mode through a power assembly. After a certain amount of water drops are attached to the condenser pipe I and the condenser pipe II, the electric push rod is started to drive the connecting rod, the first connecting flange and the second connecting flange to quickly move up and down, so that the dropping of the water drops on the condenser pipe I and the condenser pipe II is accelerated under the action of acceleration and inertia; other water vapor can be conveniently attached to the first condensation pipe and the second condensation pipe, and then the water vapor collecting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical product manufacturing technology, and in particular to a continuous ethylene glycol refining apparatus. Background Technology

[0002] Ethylene glycol is a very important chemical raw material in polyester industrial production. However, a large amount of crude ethylene glycol is generated in the actual polyester production process. For equipment with high requirements for raw materials, this crude ethylene glycol must be refined and purified by an ethylene glycol refining unit before it can be used.

[0003] The existing patent publication number CN209596589U, entitled "A Refining Apparatus for Ethylene Glycol," proposes that the refining apparatus can rapidly purify ethylene glycol, separate ethylene glycol from water, improve the quality of ethylene glycol, and thus improve the quality of products produced using it.

[0004] However, the water vapor collection efficiency is low during the distillation and purification of ethylene glycol, which reduces the separation efficiency of ethylene glycol and water, resulting in an excessively long distillation and purification time for ethylene glycol. Therefore, it is necessary to propose a continuous ethylene glycol purification device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a continuous ethylene glycol purification apparatus to solve the problem mentioned above, which is that the existing continuous ethylene glycol purification apparatus has low water vapor collection efficiency during ethylene glycol distillation and purification, thereby reducing the separation efficiency of ethylene glycol and water and resulting in excessively long ethylene glycol distillation and purification time.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a continuous ethylene glycol refining apparatus, comprising a refining tank, a flow collector fixedly installed on the top of the refining tank, a guide pipe fixedly connected to the top of the flow collector, the guide pipe having a semi-circular arc-shaped cross-section, a condensation chamber fixedly connected to the end of the guide pipe away from the flow collector, a drain pipe fixedly installed on the side of the bottom of the condensation chamber, and a condensation assembly being installed inside the condensation chamber via a power assembly for lifting and lowering.

[0007] The condensation assembly includes a first condenser tube and a second condenser tube, which are interconnected, and the first condenser tube has a serpentine bend structure.

[0008] Preferably, the power assembly includes a first bellows and a second bellows. The first bellows and the second bellows are connected to the bottoms of the first condenser and the second condenser via a first connecting flange and a second connecting flange, respectively. The bottoms of the first bellows and the second bellows are connected to an outlet pipe and an inlet pipe via a third connecting flange and a fourth connecting flange, respectively. The inlet pipe and the outlet pipe are both fixedly connected to the bottom of the condensing chamber. The bottoms of the inlet pipe and the outlet pipe are connected to the input end and the output end of the condenser, respectively. The condenser is located on the side of the refining tank. An electric push rod is fixedly installed in the middle of the top of the condenser. The telescopic end of the electric push rod extends into the condensing chamber and is fixedly connected to a connecting rod. The two ends of the connecting rod are fixedly connected to the first connecting flange and the second connecting flange, respectively.

[0009] Preferably, a first valve is provided on the drain pipe.

[0010] Preferably, a feed pipe is fixedly installed on one side of the top of the refining tank, and a discharge pipe is fixedly installed in the middle of the bottom of the refining tank. A second valve and a third valve are respectively installed on the feed pipe and the discharge pipe.

[0011] Preferably, the refining tank is fixedly provided with four support rods evenly distributed in a ring inside, and a heating plate is fixedly provided at the end of the support rods. A display screen is fixedly provided on the side of the refining tank above the temperature controller. A temperature sensor extending into the refining tank is provided on the display screen. A liquid level alarm is fixedly provided on the side of the refining tank above the display screen. A liquid level sensor extending into the refining tank is provided on the liquid level alarm.

[0012] Preferably, a controller is fixedly installed on the side of the refining tank, and the temperature controller, display screen and liquid level alarm are all electrically connected to the controller.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. When a certain amount of water droplets adhere to condenser tube 1 and condenser tube 2, the electric push rod is activated, which drives the connecting rod, the first connecting flange, and the second connecting flange to move condenser tube 1 and condenser tube 2 up and down rapidly. Under the action of acceleration and inertia, the water droplets on condenser tube 1 and condenser tube 2 fall faster, making it easier for other water vapor to adhere to condenser tube 1 and condenser tube 2, thereby improving the water vapor collection efficiency. This solves the problem that the existing ethylene glycol continuous refining device has a low water vapor collection efficiency during ethylene glycol distillation and purification, which reduces the separation efficiency of ethylene glycol and water and leads to excessively long ethylene glycol distillation and purification time.

[0015] 2. By using a guide pipe with a semi-circular arc shape, the water vapor evaporated inside the refining tank is diverted to the condensation chamber, thus avoiding the need to install the condensation chamber on top of the refining tank and effectively reducing the height of the device.

[0016] 3. The serpentine bend of the condenser tube increases the contact area between the condenser tube and water vapor, allowing for faster condensation of water vapor and thus improving the separation efficiency of ethylene glycol and water.

[0017] 4. The liquid level sensor detects the liquid level inside the refining tank to prevent overfilling from affecting distillation. The liquid level alarm alerts the operator to stop feeding. The installation of four heating plates enables uniform and rapid heating of ethylene glycol to the specified temperature, improving the refining efficiency of ethylene glycol. In addition, the temperature sensor detects the temperature of the solution inside the refining tank and displays it on the screen for easy operator monitoring, enhancing the intelligence of the device. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural diagram of a continuous ethylene glycol refining apparatus according to the present invention.

[0019] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the condensation chamber of this utility model.

[0020] Figure 3 This utility model Figure 2 An enlarged schematic diagram of the structure at point A.

[0021] Figure 4 This is a schematic diagram of the support rod and heating plate structure of this utility model.

[0022] In the diagram: 1. Refining tank; 2. Feed pipe; 3. Discharge pipe; 4. Temperature controller; 5. Support rod; 6. Heating plate; 7. Display screen; 8. Temperature sensor; 9. Liquid level alarm; 10. Liquid level sensor; 11. Flow hood; 12. Guide pipe; 13. Condensation chamber; 14. Drain pipe; 15. Condenser; 16. Liquid inlet pipe; 17. Liquid outlet pipe; 18. Electric push rod; 19. Corrugated pipe one; 20. Corrugated pipe two; 21. Condensation pipe one; 22. Condensation pipe two; 23. Connecting rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides, for example Figures 1-4The illustrated ethylene glycol continuous refining apparatus includes a refining tank 1. A flow collector 11 is fixedly installed on the top of the refining tank 1. A guide pipe 12 is fixedly connected to the top of the flow collector 11. The guide pipe 12 has a semi-circular arc-shaped cross-section. A condenser 13 is fixedly connected to the end of the guide pipe 12 away from the flow collector 11. A drain pipe 14 is fixedly installed on the side of the bottom of the condenser 13. A condensing assembly is installed inside the condenser 13 by a power assembly that lifts and lowers the assembly. The condensing assembly includes a first condenser pipe 21 and a second condenser pipe 22, which are interconnected.

[0025] Ethylene glycol to be refined is injected into the refining tank 1. After heating, low-boiling-point solutions such as water in the solution are evaporated. The water vapor evaporated from the refining tank 1 is guided to the condenser 13 through the semi-circular arc-shaped guide pipe 12. This avoids installing the condenser 13 on top of the refining tank 1, effectively reducing the height of the device. The water vapor entering the condenser 13 is condensed and adheres to the condenser tubes 21 and 22, turning into water droplets that flow down to the bottom of the condenser 13 and are finally discharged through the drain pipe 14. The serpentine bend of the condenser tube 21 increases the contact area between the water vapor and the condenser tube 21, allowing for faster condensation of the water vapor and improving the separation efficiency of ethylene glycol and water.

[0026] Furthermore, when water vapor is adsorbed onto condenser tube 21 and condenser tube 22, it will not fall off due to its own weight before it forms large water droplets. At this time, the water droplets will prevent other water vapor from adhering to condenser tube 21 and condenser tube 22, thus reducing the water vapor collection efficiency. Therefore, by intermittently operating the power component, condenser tube 21 and condenser tube 22 are driven to move up and down rapidly inside the condensation chamber 13. Under the action of acceleration and inertia, the water droplets fall faster, making it easier for other water vapor to adhere to condenser tube 21 and condenser tube 22, thereby improving the water vapor collection efficiency. This solves the problem that the existing ethylene glycol continuous refining device has a low water vapor collection efficiency during ethylene glycol distillation and purification, which reduces the separation efficiency of ethylene glycol and water and leads to excessively long ethylene glycol distillation and purification time.

[0027] Specifically, the power assembly includes a bellows 19 and a bellows 20. The bellows 19 and the bellows 20 are connected to the bottom of the condenser 21 and the condenser 22 respectively via a first connecting flange and a second connecting flange. The bottom of the bellows 19 and the bellows 20 are connected to an outlet pipe 17 and an inlet pipe 16 respectively via a third connecting flange and a fourth connecting flange. The inlet pipe 16 and the outlet pipe 17 are both fixedly connected to the bottom of the condenser chamber 13. The bottom of the inlet pipe 16 and the outlet pipe 17 are respectively connected to the input end and the output end of the condenser 15. The condenser 15 is located on the side of the refining tank 1. An electric push rod 18 is fixedly installed in the middle of the top of the condenser 15. The telescopic end of the electric push rod 18 extends into the interior of the condenser chamber 13 and is fixedly connected to a connecting rod 23. The two ends of the connecting rod 23 are fixedly connected to the first connecting flange and the second connecting flange respectively.

[0028] When the water vapor evaporated inside the refining tank 1 is guided by the guide pipe 12 into the condenser 13, the condenser 15 is started, so that the condensate circulates sequentially through the outlet pipe 17, the first corrugated pipe 19, the first condenser pipe 21, the second condenser pipe 22, the second corrugated pipe 20 and the inlet pipe 16, thereby causing water vapor to adhere to the first condenser pipe 21 and the second condenser pipe 22. When a certain amount of water droplets adhere to the first condenser pipe 21 and the second condenser pipe 22, the electric push rod 18 is started, which drives the connecting rod 23, the first connecting flange and the second connecting flange to move the first condenser pipe 21 and the second condenser pipe 22 up and down rapidly. Under the action of acceleration and inertia, the water droplets on the first condenser pipe 21 and the second condenser pipe 22 fall faster, thereby improving the water vapor collection efficiency.

[0029] Furthermore, a first valve is installed on the drain pipe 14. When the device is not in use, the first valve is closed to prevent impurities from entering the condensation chamber 13. Low-boiling-point solutions such as water in the solution are evaporated.

[0030] Furthermore, a feed pipe 2 is fixedly installed on one side of the top of the refining tank 1, and a discharge pipe 3 is fixedly installed in the middle of the bottom of the refining tank 1. A second valve and a third valve are respectively installed on the feed pipe 2 and the discharge pipe 3. Four support rods 5 are fixedly installed inside the refining tank 1 in a ring shape and evenly distributed. A heating plate 6 is fixedly installed at the end of the support rod 5. A display screen 7 is fixedly installed on the side of the refining tank 1 above the temperature controller 4. A temperature sensor 8 extending into the refining tank 1 is installed on the display screen 7. A liquid level alarm 9 is fixedly installed on the side of the refining tank 1 above the display screen 7. A liquid level sensor 10 extending into the refining tank 1 is installed on the liquid level alarm 9.

[0031] Specifically, ethylene glycol to be refined is injected into the refining tank 1 through the feed pipe 2. The liquid level sensor 10 detects the liquid level inside the refining tank 1 to prevent overfilling from affecting distillation. The liquid level alarm 9 alerts the operator to stop feeding. At this time, four heating plates 6 heat the ethylene glycol. Low-boiling-point solutions such as water in the solution are evaporated and enter the guide pipe 12. The installation of four heating plates 6 can evenly and quickly heat the ethylene glycol to the specified temperature, improving the refining efficiency of ethylene glycol. In addition, the temperature sensor 8 detects the temperature of the solution inside the refining tank 1 and displays it on the display screen 7 for easy viewing by the operator. After distillation is completed, the third valve is opened to allow the refined ethylene glycol to be discharged through the discharge pipe 3.

[0032] Furthermore, a controller is fixedly installed on the side of the refining tank 1. The temperature controller 4, the display screen 7, and the liquid level alarm 9 are all electrically connected to the controller. Through the installation of the controller, the relevant operating parameters of the device can be adjusted and the device can be controlled.

Claims

1. A continuous ethylene glycol refining apparatus, comprising a refining tank (1), characterized in that: The top of the refining tank (1) is fixedly provided with a flow collector (11), and the top of the flow collector (11) is fixedly connected with a guide pipe (12). The cross-section of the guide pipe (12) is a semi-circular arc shape. The end of the guide pipe (12) away from the flow collector (11) is fixedly connected with a condenser (13). The side of the bottom of the condenser (13) is fixedly provided with a drain pipe (14). The condenser (13) is equipped with a condensing assembly inside by means of a power assembly for lifting and lowering. The condensation assembly includes a first condenser tube (21) and a second condenser tube (22), which are interconnected, and the first condenser tube (21) has a serpentine bend structure.

2. The ethylene glycol continuous refining apparatus according to claim 1, characterized in that: The power assembly includes a first bellows (19) and a second bellows (20). The first bellows (19) and the second bellows (20) are connected to the bottoms of the first condenser (21) and the second condenser (22) respectively via a first connecting flange and a second connecting flange. The bottoms of the first bellows (19) and the second bellows (20) are connected to an outlet pipe (17) and an inlet pipe (16) respectively via a third connecting flange and a fourth connecting flange. Both the inlet pipe (16) and the outlet pipe (17) are connected to the condenser chamber (13). The bottom is fixedly connected, and the bottom of the liquid inlet pipe (16) and the liquid outlet pipe (17) are respectively connected to the input end and the output end of the condenser (15). The condenser (15) is located on the side of the refining tank (1). An electric push rod (18) is fixedly installed in the middle of the top of the condenser (15). The telescopic end of the electric push rod (18) extends into the condensation chamber (13) and is fixedly connected to a connecting rod (23). The two ends of the connecting rod (23) are fixedly connected to the first connecting flange and the second connecting flange, respectively.

3. The ethylene glycol continuous refining apparatus according to claim 2, characterized in that: The drain pipe (14) is equipped with a first valve.

4. The ethylene glycol continuous refining apparatus according to claim 2, characterized in that: A feed pipe (2) is fixedly installed on one side of the top of the refining tank (1), and a discharge pipe (3) is fixedly installed in the middle of the bottom of the refining tank (1). A second valve and a third valve are respectively installed on the feed pipe (2) and the discharge pipe (3).

5. The ethylene glycol continuous refining apparatus according to claim 4, characterized in that: The refining tank (1) is fixedly provided with four support rods (5) evenly distributed in a ring. The ends of the support rods (5) are fixedly provided with heating plates (6). The side of the refining tank (1) is fixedly provided with a display screen (7) located above the temperature controller (4). The display screen (7) is provided with a temperature sensor (8) extending into the refining tank (1). The side of the refining tank (1) is fixedly provided with a liquid level alarm (9) located above the display screen (7). The liquid level alarm (9) is provided with a liquid level sensor (10) extending into the refining tank (1).

6. The ethylene glycol continuous refining apparatus according to claim 5, characterized in that: A controller is fixedly installed on the side of the refining tank (1), and the temperature controller (4), display screen (7) and liquid level alarm (9) are all electrically connected to the controller.

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