Ethylene glycol recovery apparatus

Abstract

The utility model relates to a kind of ethylene glycol recovery device in the technical field of recovery equipment, including condensing cylinder, condensing cylinder is equipped with air inlet pipe, exhaust pipe and liquid discharge pipe, the condensing cylinder is equipped with cooling jacket outside, medium outlet and medium inlet are equipped on the cooling jacket, multiple heat conduction fins are equipped in the condensing cylinder, multiple the heat conduction fin is evenly distributed along the circumferential direction of the inner wall of condensing cylinder, heat conduction fin is equipped with condensing cavity, the condensing cavity is communicated with cooling jacket.The utility model can simultaneously cool inside and outside of gas, increase heat exchange area, improve the effect and efficiency of condensation;Heat conduction fin can rotate with cylinder body, increase its contact range with gas to further improve the effect of condensation.

Description

Technical Field

[0001] This utility model belongs to the field of recycling equipment technology, specifically relating to an ethylene glycol recycling device. Background Technology

[0002] Polyester production generates waste gas containing ethylene glycol. Direct emission of this waste gas into the air causes pollution. Ethylene glycol has low toxicity to animals and is used in the production of polyester, polyester fiber, cosmetics, and explosives. It is also used as a solvent in inks and other products, a gas dehydrating agent, and in the manufacture of resins. Therefore, the ethylene glycol in the waste gas is generally recovered and reused. Current technology uses condensation to convert the gaseous ethylene glycol into a liquid and separate it from the waste gas. However, because heat exchange only occurs on the outside of the waste gas during condensation, the ethylene glycol in the middle of the waste gas cannot be condensed, resulting in poor condensation efficiency and low recovery efficiency. Therefore, there is an urgent need for an ethylene glycol recovery device to solve the above-mentioned technical problems. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing an ethylene glycol recovery device, including a condenser cylinder with an inlet pipe, an outlet pipe, and a drain pipe. The condenser cylinder is equipped with a cooling jacket, which has a medium outlet and a medium inlet. The condenser cylinder has multiple heat-conducting fins that are evenly distributed circumferentially along the inner wall of the condenser cylinder. Each heat-conducting fin has a condensation chamber that is connected to the cooling jacket.

[0004] Preferably, the heat-conducting fins are rectangular plates, with one long side fixedly connected to the inner wall of the condenser cylinder, and the other long side parallel to the central axis of the condenser cylinder. The heat-conducting fins increase the gas heat exchange area, which is beneficial for improving the condensation effect.

[0005] Preferably, the condenser cylinder is equipped with a scraper, the top of which is connected to a vertical telescopic rod. The vertical telescopic rod is an electric push rod, a hydraulic cylinder, or a pneumatic cylinder. The scraper contacts the inner wall of the condenser cylinder and has grooves that match the heat-conducting fins. The extension and retraction of the vertical telescopic rod causes the scraper to move downwards. During this downward movement, the scraper removes liquid adhering to the inner wall of the condenser cylinder and the outer wall of the heat-conducting fins, reducing material adhesion and avoiding adverse effects on heat exchange.

[0006] Preferably, the distance between the highest point of the heat-conducting fins and the top of the condenser cylinder is greater than the thickness of the scraper. During condensation operation, the scraper is located at the top of the condenser cylinder, which does not affect the contact between the heat-conducting fins and the gas.

[0007] Preferably, the condenser cylinder includes an upper cover, a cylinder body, and a cylinder bottom. The upper cover is connected to a fixing bracket one, and the upper cover is rotatably connected to the upper end of the cylinder body via a bearing. The exhaust pipe is located on the upper cover. The cylinder bottom is rotatably connected to the lower end of the cylinder body via a bearing. The cylinder bottom is connected to a fixing bracket two. The air inlet pipe and the liquid outlet pipe are both located at the cylinder bottom. The heat-conducting fins are located on the inner wall of the cylinder body, and the cooling jacket is located on the outer wall of the cylinder body. The cylinder body is connected to a driving assembly, which drives the cylinder body to rotate, so that the heat-conducting fins can fully contact the gas inside the condenser cylinder, thereby improving the condensation effect and condensation efficiency.

[0008] Preferably, the drive assembly includes a gear and a motor. The motor can be fixed on the second mounting bracket, and the output end of the motor is connected to the gear. A ring-shaped rack is fixed on the outer wall of the cylinder, and the gear meshes with the rack for transmission. During the condensation process, the motor drives the gear to rotate, and the gear meshes with the rack, thereby driving the cylinder to rotate.

[0009] This invention also includes other components that enable the normal operation of an ethylene glycol recovery device, such as control components for the motor, electric actuators, cylinders, and control components for controlling the circulation of the medium within the cooling jacket (e.g., a liquid pump), and control components for the hydraulic cylinder, all of which are conventional technologies in the field. Furthermore, devices or components not specified in this invention, such as cooling jackets, heat-conducting fins, electric actuators, hydraulic cylinders, and cylinders, all employ conventional technologies and equipment in the field.

[0010] Working principle: The gas to be condensed is introduced into the condenser cylinder through the inlet pipe. Cooling medium (cold water or cold oil, etc.) is continuously circulated in the cooling jacket. The cooling jacket and heat-conducting fins exchange heat with the gas, causing the ethylene glycol in the gas to condense into liquid and fall to the bottom of the condenser cylinder. After condensation is completed, the drain pipe is opened, and the liquid ethylene glycol is discharged. At the same time, the vertical telescopic rod extends, and the scraper scrapes off the liquid adhering to the condenser cylinder wall and heat-conducting fins, improving the discharge efficiency.

[0011] This invention has the following advantages: it can cool the gas inside and out simultaneously, increasing the heat exchange area and improving the condensation effect and efficiency; the heat-conducting fins can rotate with the cylinder, increasing their contact range with the gas and further improving the condensation effect. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of an ethylene glycol recovery device in Embodiment 1 of this utility model;

[0014] Figure 2 for Figure 1View from point AA;

[0015] Figure 3 for Figure 1 A sectional view;

[0016] Figure 4 This is a schematic diagram of the scraper structure in the embodiment;

[0017] Figure 5 This is a schematic diagram of the structure of an ethylene glycol recovery device in Example 2;

[0018] Figure 6 for Figure 4 A sectional view.

[0019] In the diagram: 1. Cylinder body; 2. Drain pipe; 3. Exhaust pipe; 4. Medium inlet; 5. Medium outlet; 6. Vertical telescopic rod; 7. Air inlet pipe; 8. Cooling jacket; 9. Heat-conducting fins; 10. Scraper; 11. Fixing frame two; 12. Cylinder bottom; 13. Top cover; 14. Rack; 15. Gear; 16. Motor; 17. Fixing frame one. Detailed Implementation

[0020] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0021] Example 1

[0022] like Figure 1-4 As shown, this utility model provides an ethylene glycol recovery device, including a condenser cylinder, an inlet pipe 7, an exhaust pipe 3 and a drain pipe 2 on the condenser cylinder, a cooling jacket 8 outside the condenser cylinder, a medium outlet 5 and a medium inlet 4 on the cooling jacket 8, a plurality of heat-conducting fins 9 inside the condenser cylinder, the plurality of heat-conducting fins 9 being evenly distributed along the circumference of the inner wall of the condenser cylinder, a condensation chamber inside the heat-conducting fins 9, and the condensation chamber communicating with the cooling jacket 8.

[0023] The heat-conducting fin 9 is a rectangular plate. One long side of the heat-conducting fin 9 is fixedly connected to the inner wall of the condenser cylinder, the other long side of the heat-conducting fin 9 is parallel to the central axis of the condenser cylinder, and the short side of the heat-conducting fin is perpendicular to the central axis of the condenser cylinder. The arrangement of the heat-conducting fin 9 increases the gas heat exchange area, which is beneficial to improving the condensation effect.

[0024] The condenser cylinder is equipped with a scraper 10, the top of which is connected to a vertical telescopic rod 6. The vertical telescopic rod 6 can be an electric push rod, a hydraulic cylinder, or a pneumatic cylinder. The scraper 10 contacts the inner wall of the condenser cylinder, and has grooves that match the heat-conducting fins 9. The extension and retraction of the vertical telescopic rod 6 causes the scraper 10 to move downwards. During this downward movement, the scraper 10 scrapes off the liquid adhering to the inner wall of the condenser cylinder and the outer wall of the heat-conducting fins 9, reducing material adhesion and avoiding adverse effects on heat exchange.

[0025] The distance between the highest point of the heat-conducting fin 9 and the top of the condenser cylinder is greater than the thickness of the scraper 10. During condensation operation, the scraper 10 is located at the top of the condenser cylinder and does not affect the contact between the heat-conducting fin 9 and the gas.

[0026] During operation, the gas to be condensed is introduced into the condenser cylinder through the inlet pipe. Cooling medium (cold water or cold oil, etc.) is continuously circulated in the cooling jacket. The cooling jacket and the heat-conducting fins exchange heat with the gas, causing the ethylene glycol in the gas to condense into liquid and fall to the bottom of the condenser cylinder. After condensation is completed, the drain pipe is opened, and the liquid ethylene glycol is discharged. At the same time, the vertical telescopic rod extends, and the scraper scrapes off the liquid adhering to the condenser cylinder wall and the heat-conducting fins, improving the discharge efficiency.

[0027] Example 2

[0028] like Figure 2 , 4 As shown in Figures 5 and 6, the difference between this embodiment and Embodiment 1 is that the condenser cylinder includes an upper cover 13, a cylinder body 1, and a cylinder bottom 12. The upper cover 13 is connected to a fixing bracket 17. The upper cover 13 is rotatably connected to the upper end of the cylinder body 1 via a bearing. The exhaust pipe 3 is located on the upper cover 13. The cylinder bottom 12 is rotatably connected to the lower end of the cylinder body 1 via a bearing. The cylinder bottom 12 is connected to a fixing bracket 11. The air inlet pipe 7 and the liquid outlet pipe 2 are both located at the cylinder bottom 12. The heat-conducting fins 9 are located on the inner wall of the cylinder body 1. The cooling jacket 8 is located on the outer wall of the cylinder body 1. The cylinder body 1 is connected to a driving assembly. The driving assembly drives the cylinder body 1 to rotate, so that the heat-conducting fins 9 are in full contact with the gas inside the condenser cylinder, thereby improving the condensation effect and condensation efficiency.

[0029] The drive assembly includes a gear 15 and a motor 16. The motor is fixed on the second mounting bracket, and the output end of the motor 16 is connected to the gear 15. A rack 14 is fixed on the outer wall of the cylinder 1, and the gear 15 meshes with the rack 14. During the condensation process, the motor 16 drives the gear 15 to rotate, and the gear 15 meshes with the rack 14, thereby driving the cylinder 1 to rotate. In this embodiment, the motor periodically reverses direction to ensure the normal circulation of coolant between the medium inlet and outlet of the cooling jacket.

[0030] In the above-described embodiment, the medium inlet of an ethylene glycol recovery device is connected to a cooling source via a liquid guide pipe. A liquid pump is installed on the liquid guide pipe, continuously supplying the cooling medium from the cooling source into the cooling jacket. Specifically, the cooling source can be a cold water tank. The medium inlet and outlet are connected to the cold water tank via liquid guide pipes, and a chiller is installed inside the cold water tank. The nozzles, electric actuators, hydraulic cylinders, pneumatic cylinders, motors (servo motors or stepper motors), and chillers involved in the ethylene glycol recovery device in this embodiment are all existing technologies. This application does not improve upon them but only utilizes their existing functions. For their specific structure and principles, please refer to the product manual or existing technical documents, as they are all existing technologies. The electric actuator, hydraulic cylinder, pneumatic cylinder, and motor are all connected to control switches, which control their operation.

[0031] The embodiments of this utility model have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An ethylene glycol recovery device, comprising a condenser cylinder, wherein the condenser cylinder is provided with an inlet pipe, an outlet pipe, and a drain pipe, characterized in that: The condenser cylinder is provided with a cooling jacket, which is provided with a medium outlet and a medium inlet. The condenser cylinder is provided with a plurality of heat-conducting fins, which are evenly distributed along the circumference of the inner wall of the condenser cylinder. The heat-conducting fins are provided with a condensation cavity, which is connected to the cooling jacket.

2. The ethylene glycol recovery device according to claim 1, characterized in that: The heat-conducting fins are rectangular plates. One long side of the heat-conducting fins is fixedly connected to the inner wall of the condenser cylinder, and the other long side of the heat-conducting fins is parallel to the central axis of the condenser cylinder.

3. The ethylene glycol recovery device according to claim 2, characterized in that: The condenser cylinder is equipped with a scraper, and a vertical telescopic rod is connected to the top of the scraper. The scraper contacts the inner wall of the condenser cylinder and has grooves that match the heat-conducting fins.

4. The ethylene glycol recovery device according to claim 3, characterized in that: The distance between the highest point of the heat-conducting fins and the top of the condenser cylinder is greater than the thickness of the scraper.

5. The ethylene glycol recovery device according to claim 2, characterized in that: The condenser cylinder includes an upper cover, a cylinder body, and a cylinder bottom. The upper cover is rotatably connected to the upper end of the cylinder body via a bearing. The exhaust pipe is located on the upper cover. The cylinder bottom is rotatably connected to the lower end of the cylinder body via a bearing. The air inlet pipe and the liquid outlet pipe are both located at the cylinder bottom. The heat-conducting fins are located on the inner wall of the cylinder body. The cooling jacket is located on the outer wall of the cylinder body. The cylinder body is connected to a drive assembly, which drives the cylinder body to rotate.

6. The ethylene glycol recovery device according to claim 5, characterized in that: The drive assembly includes a gear and a motor. The output end of the motor is connected to the gear. A ring-shaped rack is fixed on the outer wall of the cylinder. The gear meshes with the rack for transmission.

Images