Ultraviolet light absorber distillation device with waste heat recovery function

Abstract

The utility model discloses an ultraviolet absorbent distillation device with a waste heat recovery function, which relates to the technical field of distillation equipment and comprises a distillation kettle, a heat storage cylinder horizontally arranged on one side of the distillation kettle, a fan arranged on the heat storage cylinder, a sealing cover, a water storage tank arranged below the heat storage cylinder and a heat conduction coil pipe, one end of the heat storage cylinder is an open end, the other end of the heat storage cylinder is a closed end, and the open end is connected with the sealing cover; the heat-conducting coil pipe is arranged in the water storage tank, and one end of the heat-conducting coil pipe penetrates through the water storage tank; an air inlet pipe is arranged on the side, away from the heat storage cylinder, of the sealing cover, a universal pipe joint is arranged at the other end of the air inlet pipe, and an air inlet and an air outlet of the fan are communicated with the distillation kettle and the universal pipe joint through pipelines respectively; a three-way pipe communicated with the heat storage cylinder is arranged at the closed end; high-temperature hot gas passes through the filter layer, impurities and pollutants in the hot gas are removed by the filter layer, and the filtered high-temperature hot gas flows back into the distillation kettle again through the three-way pipe, so that a waste heat recovery function is realized.

Description

Technical Field

[0001] This utility model relates to the field of distillation equipment technology, specifically to a distillation device for ultraviolet absorbers with waste heat recovery function. Background Technology

[0002] Ultraviolet (UV) absorbers are currently the most widely used type of light stabilizers. Based on their structure, they can be classified into salicylate esters, benzophenones, benzotriazoles, substituted acrylonitriles, triazines, etc. Benzophenones and benzotriazoles are the most commonly used in industry. They can absorb the ultraviolet portion of sunlight and fluorescent light sources without undergoing any changes themselves. During the production of UV absorbers, distillation equipment is required for purification to improve the quality of the UV absorbers.

[0003] Existing patent announcements CN209612236U and CN21209097U disclose ultraviolet absorber distillation devices with waste heat recovery functions. Both devices achieve heat recovery by filtering the hot gas discharged from the distillation tank and then re-feeding it into the tank. However, as the distillation tank continues to heat and react, when the internal pressure reaches a set value, the hot gas needs to be discharged. Neither device has a venting function, posing a safety hazard. Furthermore, directly discharging the hot gas can cause impurities and heat in the gas to affect the surrounding environment. Therefore, there is room for improvement in the existing technology. Summary of the Invention

[0004] The purpose of this invention is to provide a UV absorber distillation device with waste heat recovery function, thereby realizing the function of waste heat recovery, reducing unnecessary resource waste, making it more energy-efficient and environmentally friendly, and improving the practicality of the device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a UV absorber distillation device with waste heat recovery function, comprising a distillation vessel equipped with a feeding port, a water inlet pipe, a discharge port, and a pressure gauge; a stirring paddle is provided inside the distillation vessel, and a motor for driving the stirring paddle to rotate is provided on the distillation vessel; it also includes a heat storage cylinder horizontally arranged on one side of the distillation vessel, a fan arranged on the heat storage cylinder, a sealing cover, a water storage tank located below the heat storage cylinder, and a heat conduction coil; one end of the heat storage cylinder is an open end, and the other end is a closed end, the open end being used to connect with the sealed end. The sealing cap is connected to the heat storage tank; the heat-conducting coil is located inside the water storage tank, and one end of the heat-conducting coil passes through the water storage tank; the sealing cap has an air inlet pipe on the side away from the heat storage cylinder, and the other end of the air inlet pipe has a universal joint; the air inlet and outlet of the fan are respectively connected to the distillation kettle and the universal joint through pipes; the closed end has a three-way pipe connected to the heat storage cylinder, and the other two ends of the three-way pipe are respectively connected to the distillation kettle and the other end of the heat-conducting coil; the inner circumference of the heat storage cylinder has a limiting plate with through holes, and a filter layer is provided between the limiting plate and the sealing cap.

[0006] In order to facilitate the control of the flow of high-temperature hot gas, as a preferred embodiment of the ultraviolet absorber distillation device with waste heat recovery function of this utility model, a first one-way valve is provided on the pipeline between the three-way pipe and the distillation kettle, and a control valve is provided on the pipeline between the three-way pipe and the heat-conducting coil.

[0007] To facilitate the automatic delivery of water into the distillation vessel, as a preferred embodiment of the ultraviolet absorber distillation device with waste heat recovery function of this utility model, the water storage tank is equipped with a pump body. The input end and output end of the pump body are respectively connected to the water storage tank and the water supply pipe through pipes, and a second one-way valve is provided on the pipeline between the pump body and the water supply pipe.

[0008] In order to achieve the effect of heat preservation and reduce heat loss, the inner walls of the water storage tank and the distillation kettle are preferably provided with heat preservation layers in the ultraviolet absorber distillation device with waste heat recovery function of this utility model.

[0009] To facilitate the detection of water temperature and level in the water storage tank, as a preferred embodiment of the ultraviolet absorber distillation device with waste heat recovery function of this utility model, the water storage tank is equipped with a water inlet and a drain pipe, a temperature sensor and a liquid level sensor are installed inside the water storage tank, and a display screen is installed on the water storage tank, which is electrically connected to the temperature sensor and the liquid level sensor respectively.

[0010] To improve the filtration effect, in a preferred embodiment of the ultraviolet absorber distillation device with waste heat recovery function of this utility model, the filter layer is composed of an activated carbon layer, a ceramic filter layer, and a high-temperature resistant material filter layer stacked sequentially towards the sealing cover.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention involves starting a fan to transport high-temperature hot air from inside the distillation kettle to the heat storage cylinder. The hot air passes through a filter layer, which removes impurities and contaminants. The filtered hot air then flows back into the distillation kettle via a three-way pipe, achieving waste heat recovery and reducing unnecessary resource waste. To prevent excessive pressure inside the distillation kettle and potential hazards, a control valve can be opened to allow some of the high-temperature hot air to flow into the heat conduction coil. The heat conduction coil exchanges heat with the water in the storage tank, heating the water and preventing the hot air from being directly discharged. This further enhances waste heat recovery, making the system more energy-efficient and environmentally friendly, and improving the practicality of the waste heat recovery device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the heat storage cylinder and water storage tank of this utility model;

[0015] Figure 3 This is a schematic diagram of the through hole and limiting plate structure of this utility model;

[0016] Figure 4 This is a cross-sectional structural diagram of the filter layer of this utility model.

[0017] In the diagram: 1. Distillation vessel; 2. Heat storage cylinder; 3. Fan; 4. Sealing cap; 5. Water storage tank; 6. Heat-conducting coil; 7. Air inlet pipe; 8. Universal joint; 9. T-pipe; 10. Through hole; 11. Limiting plate; 12. Filter layer; 13. First check valve; 14. Control valve; 15. Pump body; 16. Second check valve; 17. Insulation layer; 18. Water inlet; 19. Drain pipe; 20. Temperature sensor; 21. Liquid level sensor; 22. Display screen; 23. Activated carbon layer; 24. Ceramic filter layer; 25. High-temperature resistant material filter layer; 26. Feeding port; 27. Water inlet pipe; 28. Discharge port; 29. ​​Pressure gauge; 30. Stirring paddle; 31. Motor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] Please see Figures 1 to 4 A UV absorber distillation device with waste heat recovery function includes a distillation vessel 1 equipped with a feeding port, a water inlet, a discharge port, and a pressure gauge. The distillation vessel 1 contains a stirring paddle, and a motor is mounted on the distillation vessel 1 to drive the stirring paddle's rotation. It also includes a heat storage cylinder 2 horizontally positioned on one side of the distillation vessel 1, a fan 3 mounted on the heat storage cylinder 2, a sealing cover 4, a water storage tank 5 located below the heat storage cylinder 2, and a heat-conducting coil 6. One end of the heat storage cylinder 2 is open, and the other end is closed; the open end is connected to the sealing cover 4. The heat-conducting coil 6 is located inside the water storage tank 5, with one end of the heat-conducting coil 6 penetrating through the water storage tank 5. The sealing cover 4 is located at... An air inlet pipe 7 is provided on one side away from the heat storage cylinder 2, and a universal joint 8 is provided at the other end of the air inlet pipe 7. The air inlet and outlet of the fan 3 are connected to the distillation kettle 1 and the universal joint 8 through pipes, respectively. A three-way pipe 9 is provided at the closed end, which is connected to the heat storage cylinder 2. The other two ends of the three-way pipe 9 are connected to the distillation kettle 1 and the other end of the heat conduction coil 6, respectively. A limiting plate 11 with a through hole 10 is provided on the inner circumference of the heat storage cylinder 2. A filter layer 12 is provided between the limiting plate 11 and the sealing cover 4. A first one-way valve 13 is provided on the pipeline between the three-way pipe 9 and the distillation kettle 1, and a control valve 14 is provided on the pipeline between the three-way pipe 9 and the heat conduction coil 6.

[0021] In this embodiment: reactants are added to the distillation vessel 1 through the feeding port; the motor is started, and the stirring paddle uniformly stirs the materials inside the distillation vessel 1, ensuring uniform heating and reaction; the pressure gauge monitors the internal air pressure of the distillation vessel 1 in real time; the blower 3 is started, allowing the hot air inside the distillation vessel 1 to be transported to the heat storage cylinder 2 through the universal joint 8 and the air inlet pipe 7. The hot air passes through the filter layer 12, which removes impurities and contaminants from the hot air. The filtered high-temperature hot air passes through the through hole 10 on the limit switch and flows back to the inside of the distillation vessel 1 through the three-way pipe 9 (at this time, the control valve 14 is in the closed state), realizing the waste heat recovery function and reducing unnecessary resource waste; the pipeline between the three-way pipe 9 and the distillation vessel 1... The first one-way valve 13 acts as a flow cutoff valve to prevent hot gas from flowing into the three-way pipe 9 from the distillation vessel 1. When the distillation vessel 1 continues to react, the internal gas pressure rises. When the internal gas pressure reaches the set value, in order to avoid the potential danger of excessive internal gas pressure, the control valve 14 can be opened to allow some of the high-temperature hot gas to flow into the heat conduction coil 6. The heat conduction coil 6 exchanges heat with the water in the water storage tank 5, thus heating the water in the water storage tank 5 and preventing the high-temperature hot gas from being directly discharged. This again realizes the waste heat recovery function, making it more energy-efficient and environmentally friendly, and improving the practicality of the waste heat recovery device. At the same time, after the reaction in the distillation vessel 1 is completed, in order to cool it quickly, the high-temperature hot gas inside the distillation vessel 1 can be continuously transported into the heat conduction coil 6.

[0022] The sealing cover 4 of this utility model is connected to the outer wall of the heat storage cylinder 2 by threads. The pipe between the fan 3 and the universal joint 8 is made of high temperature resistant hose. When rotating the sealing cover 4 through the universal joint 8, the pipe between the fan 3 and the universal joint 8 can be prevented from rotating. By opening the sealing cover 4, it is easy to replace the filter layer 12 regularly. The limiting plate 11 restricts the filter layer 12, so that the filter layer 12 is stably placed between the limiting plate 11 and the sealing cover 4. The through hole 10 on the limiting plate 11 allows high temperature hot air to pass through easily.

[0023] As a technical optimization of this utility model, a pump body 15 is provided on the water storage tank 5. The input end and output end of the pump body 15 are respectively connected to the water storage tank 5 and the water filling pipe through pipes, and a second one-way valve 16 is provided on the pipe between the pump body 15 and the water filling pipe.

[0024] In this embodiment: during distillation, when water needs to be added to the distillation vessel 1 in the distillation process, the pump body 15 can be started to automatically transport the preheated hot water in the water storage tank 5 to the distillation vessel 1; and after the distillation vessel 1 has been distilled, water can be added to the distillation vessel 1 to rinse it. The second one-way valve 16 acts as a flow cutoff valve to prevent the hot steam in the distillation vessel 1 from entering the water storage tank 5 through the water inlet pipe.

[0025] As a technical optimization of this utility model, both the water storage tank 5 and the distillation kettle 1 are provided with a heat insulation layer 17 on their inner walls.

[0026] In this embodiment, the insulation layer 17 serves to keep the water tank 5 and the distillation vessel 1 warm, preventing heat from being transferred outward and reducing heat loss and waste of heat resources.

[0027] As a technical optimization of this utility model, the water storage tank 5 is provided with a water inlet 18 and a drain pipe 19. The water storage tank 5 is provided with a temperature sensor 20 and a liquid level sensor 21. The water storage tank 5 is provided with a display screen 22, which is electrically connected to the temperature sensor 20 and the liquid level sensor 21 respectively.

[0028] In this embodiment: temperature sensor 20 and liquid level sensor 21 can easily detect the water temperature and water level inside water tank 5 in real time, and display screen 22 can view the water temperature and water level inside water tank 5; water inlet 18 can easily add water to water tank 5, and when the water temperature is higher than the set value, the drain pipe 19 can be opened to use the water inside water tank 5.

[0029] As a technical optimization of this utility model, the filter layer 12 is composed of an activated carbon layer 23, a ceramic filter layer 24, and a high-temperature resistant material filter layer 25 stacked sequentially in the direction of the sealing cover 4.

[0030] In this embodiment: the activated carbon layer 23, the ceramic filter layer 24, and the high-temperature resistant material filter layer 25 can all maintain stable physical properties under high temperature conditions, which can remove impurities and pollutants. The filtered hot steam is recovered into the distillation kettle 1, which can improve product quality.

[0031] The ceramic filter layer 24 is preferably an alumina ceramic filter element or a silicon carbide ceramic filter element; the high-temperature resistant material filter layer 25 can preferably be a PTFE filter element, a P84 filter element, a graphitized polystyrene filter element, or a high-temperature synthetic fiber.

[0032] Working principle and usage process of this utility model:

[0033] The reactants are added into the distillation vessel 1 through the feeding port; the motor is started, and the stirring paddle evenly stirs the materials inside the distillation vessel 1, ensuring uniform heating and reaction; the pressure gauge monitors the internal pressure of the distillation vessel 1 in real time; the blower 3 is started, allowing the hot air inside the distillation vessel 1 to be transported to the heat storage cylinder 2 through the universal joint 8 and the air inlet pipe 7. The hot air passes through the filter layer 12, which removes impurities and contaminants from the hot air. The filtered high-temperature hot air passes through the through hole 10 on the limit plate 11 and flows back into the distillation vessel 1 through the three-way pipe 9 (at this time, the control valve 14 is in the closed state), realizing the waste heat recovery function and reducing waste heat. Necessary resource waste; the first one-way valve 13 on the pipeline between the three-way pipe 9 and the distillation vessel 1 acts as a flow cut-off to prevent hot gas in the distillation vessel 1 from flowing into the three-way pipe 9; when the distillation vessel 1 continues to react, the internal gas pressure rises. When the internal gas pressure reaches the set value, in order to avoid the potential danger of excessive internal gas pressure in the distillation vessel 1, the control valve 14 can be opened to allow some of the high-temperature hot gas to flow into the heat conduction coil 6. The heat conduction coil 6 exchanges heat with the water in the water storage tank 5, so that the water in the water storage tank 5 can be heated, avoiding the direct discharge of high-temperature hot gas, and realizing the waste heat recovery function again, which is more energy-saving and environmentally friendly, and improves the practicality of the waste heat recovery device.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A UV absorber distillation apparatus with waste heat recovery function, comprising a distillation vessel (1) equipped with a feeding port, a water inlet, a discharge port, and a pressure gauge, wherein a stirring paddle is provided inside the distillation vessel (1), and a motor for driving the stirring paddle to rotate is provided on the distillation vessel (1); characterized in that: It also includes a heat storage cylinder (2) horizontally arranged on one side of the distillation vessel (1), a fan (3) arranged on the heat storage cylinder (2), a sealing cover (4), a water storage tank (5) arranged below the heat storage cylinder (2), and a heat-conducting coil (6); one end of the heat storage cylinder (2) is an open end and the other end is a closed end, the open end is used to connect to the sealing cover (4); the heat-conducting coil (6) is arranged inside the water storage tank (5), and one end of the heat-conducting coil (6) penetrates the water storage tank (5); the sealing cover (4) is provided with an air inlet pipe (7) on the side away from the heat storage cylinder (2). The other end of the air inlet pipe (7) is provided with a universal joint (8). The air inlet and outlet of the fan (3) are respectively connected to the distillation kettle (1) and the universal joint (8) through pipes. The closed end is provided with a three-way pipe (9) connected to the heat storage cylinder (2). The other two ends of the three-way pipe (9) are respectively connected to the other end of the distillation kettle (1) and the heat conduction coil (6). The inner circumference of the heat storage cylinder (2) is provided with a limiting plate (11) with a through hole (10). A filter layer (12) is provided between the limiting plate (11) and the sealing cover (4).

2. The ultraviolet absorber distillation device with waste heat recovery function according to claim 1, characterized in that: A first one-way valve (13) is provided on the pipeline between the three-way pipe (9) and the distillation kettle (1), and a control valve (14) is provided on the pipeline between the three-way pipe (9) and the heat-conducting coil (6).

3. The ultraviolet absorber distillation device with waste heat recovery function according to claim 1, characterized in that: The water storage tank (5) is equipped with a pump body (15). The input end and output end of the pump body (15) are connected to the water storage tank (5) and the water supply pipe through pipes, respectively. A second one-way valve (16) is provided on the pipeline between the pump body (15) and the water supply pipe.

4. The ultraviolet absorber distillation device with waste heat recovery function according to claim 1, characterized in that: Both the water storage tank (5) and the distillation kettle (1) are provided with a heat insulation layer (17) on their inner walls.

5. The ultraviolet absorber distillation device with waste heat recovery function according to claim 1, characterized in that: The water storage tank (5) is provided with a water inlet (18) and a drain pipe (19). The water storage tank (5) is provided with a temperature sensor (20) and a liquid level sensor (21). The water storage tank (5) is provided with a display screen (22). The display screen (22) is electrically connected to the temperature sensor (20) and the liquid level sensor (21) respectively.

6. The ultraviolet absorber distillation device with waste heat recovery function according to claim 1, characterized in that: The filter layer (12) is composed of an activated carbon layer (23), a ceramic filter layer (24), and a high-temperature resistant material filter layer (25) stacked sequentially in the direction of the sealing cover (4).

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