Rectification apparatus and waste liquid treatment system

Abstract

A rectification device and a waste liquid treatment system, wherein the rectification device comprises: a first cavity; a heating pipeline, a refrigerant in the heating pipeline releases heat to heat solvent-containing waste liquid, so that water in the solvent-containing waste liquid is boiled and evaporated to form water vapor; a first throttling device for decompression cooling of the refrigerant; a condensing pipeline, the refrigerant in the condensing pipeline absorbs heat in the water vapor to liquefy the water vapor into clean water; a compressor, the compressor is in communication with the heating pipeline and the condensing pipeline respectively, the compressor is used for compressing the refrigerant and conveying the refrigerant to flow and circulate in the heating pipeline and the condensing pipeline; a second cavity, the condensing pipeline is arranged in the second cavity, and the second cavity is used for storing the clean water. The solvent-containing waste liquid is treated by the waste liquid treatment process of the high-efficiency heat pump technology, the finally rectified clean water can be discharged or reused, and the organic solvent can be efficiently recovered, the treatment cost is greatly reduced, and the energy utilization efficiency is significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of waste liquid treatment technology, and in particular to a distillation apparatus and a waste liquid treatment system. Background Technology

[0002] Organic solvents are widely used in various production processes across numerous industrial sectors, including chemical, pharmaceutical, and electronics industries, playing an indispensable role in chemical synthesis, extraction, and cleaning. However, the use of these organic solvents generates large quantities of waste liquids containing organic solvents. These waste liquids are typically characterized by high toxicity, high chemical oxygen demand (COD), and difficulty in biodegradation, making their treatment a pressing problem in industrial production.

[0003] Traditional methods for treating organic wastewater mainly include physical, chemical, and biological methods. Physical methods, such as sedimentation and filtration, while simple to operate, are difficult to effectively remove dissolved organic solvents from the wastewater, and the treated wastewater often fails to meet stringent environmental emission standards. Chemical methods, such as oxidation-reduction and neutralization, can remove some pollutants, but may cause secondary pollution and are costly. Biological methods rely on the degradation by microorganisms, but because wastewater containing organic solvents is highly toxic, most microorganisms cannot survive in it, thus greatly limiting the application of biological methods.

[0004] Furthermore, traditional treatment methods also present numerous problems in terms of energy utilization. For example, some high-temperature distillation or evaporation processes consume large amounts of energy, which not only increases production costs but also contradicts the current advocacy of energy conservation, emission reduction, and sustainable development. With increasing environmental awareness and a deeper understanding of sustainable development, businesses and society have an increasingly urgent need for clean production technologies. There is a pressing need for an efficient, energy-saving, environmentally friendly, and economically feasible organic wastewater treatment technology to achieve efficient recovery and reuse of organic solvents and to ensure compliant discharge or reuse of wastewater, thereby promoting the green and sustainable development of the chemical industry. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a distillation device and a waste liquid treatment system to achieve energy-saving and environmentally friendly waste liquid treatment.

[0006] To address the aforementioned problems, this utility model provides a distillation apparatus, comprising: a first chamber for storing solvent-containing waste liquid; a heating pipe disposed within the first chamber, wherein a refrigerant in the heating pipe releases heat to heat the solvent-containing waste liquid, causing the water in the solvent-containing waste liquid to boil and evaporate, forming water vapor; a first throttling device connected to the heating pipe, wherein the first throttling device is used to reduce the pressure and cool the refrigerant; a condensing pipe connected to the first throttling device, wherein the refrigerant in the condensing pipe absorbs heat from the water vapor to liquefy the water vapor into clean water; a compressor connected to both the heating pipe and the condensing pipe, wherein the compressor is used to compress the refrigerant and circulate the refrigerant within the heating pipe and the condensing pipe; and a second chamber connected to the first chamber, wherein the condensing pipe is disposed within the second chamber, and the second chamber is used to store the clean water.

[0007] Optionally, it also includes: a storage box, wherein the internal cavity of the storage box is divided into the first cavity and the second cavity.

[0008] Optionally, the internal cavity of the storage box is further divided into connecting cavities, which are respectively connected to the first cavity and the second cavity, and are located above the first cavity and the second cavity.

[0009] Optionally, it also includes a negative pressure device for controlling the vacuum level in the first cavity and the second cavity.

[0010] Optionally, the negative pressure device includes a vacuum pump; the vacuum pump includes a water ring vacuum pump.

[0011] Optionally, the heating pipes are arranged in a spiral or serpentine pattern; the condensing pipes are arranged in a spiral or serpentine pattern.

[0012] Optionally, the first throttling device includes an electronic expansion valve.

[0013] Optionally, it may also include: a heat balancing device, which is connected to the heating pipe; and a second throttling device, which is connected to the heat balancing device.

[0014] Optionally, the second throttling device includes an electronic expansion valve.

[0015] Accordingly, the present invention also provides a waste liquid treatment system, comprising: a distillation apparatus as described in any of the above technical solutions; a waste liquid tank for storing the solvent-containing waste liquid, the waste liquid tank being connected to the first cavity.

[0016] Optionally, it also includes: a first pumping pipeline, which is connected to the waste liquid tank and the first cavity respectively, and the first pumping pipeline is used to transport the solvent-containing waste liquid stored in the waste liquid tank to the first cavity.

[0017] Optionally, it also includes: a second pumping line, which is connected to the second cavity, and is used to discharge the clean water stored in the second cavity.

[0018] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0019] In the distillation apparatus of this invention, the refrigerant is compressed into a high-temperature, high-pressure gas by the compressor. During this process, the refrigerant absorbs heat from the surrounding environment, causing its temperature and pressure to rise significantly. The compressor then delivers the high-temperature, high-pressure gaseous refrigerant to the heating pipe, where the refrigerant releases its own heat to heat the solvent-containing waste liquid. The water contained within the refrigerant is converted into water vapor by the heat, while the organic solvent remains in the waste liquid due to its high boiling point. After releasing heat through the heating pipe, the refrigerant undergoes pressure reduction and cooling through the first throttling device, rapidly decreasing its pressure and temperature, transforming from a high-temperature, high-pressure gas into a low-temperature, low-pressure liquid. The low-temperature, low-pressure liquid refrigerant enters the condensation pipe, where it absorbs heat from the surrounding environment. This heat is primarily from the water vapor flowing from the first cavity to the second cavity. After absorbing ambient heat, the refrigerant evaporates back into gas, while the water vapor, after absorbing heat, condenses into liquid to form clean water, which is stored in the second cavity. The solvent-containing wastewater is treated using a wastewater treatment process based on high-efficiency heat pump technology. The resulting clean water, after distillation, can be discharged in compliance with standards or reused. Furthermore, it can efficiently recover organic solvents, significantly reducing treatment costs and improving energy efficiency.

[0020] Furthermore, it also includes a negative pressure device used to control the vacuum level in the first and second chambers. The negative pressure device creates a negative pressure environment by evacuating air from the first and second chambers. Under negative pressure, the water in the solvent-containing waste liquid evaporates more easily to form water vapor. Simultaneously, the negative pressure environment also helps the water vapor condense into liquid more efficiently. The negative pressure device can precisely control the vacuum level in the first and second chambers through frequency conversion or valve flow rate adjustment, ensuring stable operation of the entire distillation process. Vacuum level adjustments can be made to adapt to different processing requirements, thereby optimizing the overall performance of the device. By maintaining a negative pressure environment, the negative pressure device not only improves the efficiency of waste liquid treatment but also reduces energy consumption and lowers processing costs.

[0021] Furthermore, the heating pipes are arranged in a spiral or serpentine pattern; the condensing pipes are also arranged in a spiral or serpentine pattern. The spiral or serpentine arrangement significantly increases the surface area of ​​the pipes, thereby improving heat transfer efficiency. Simultaneously, the spiral or serpentine arrangement allows for the arrangement of more pipe lengths within a limited space, making the entire device more compact.

[0022] Furthermore, it also includes: a heat balancing device, which is connected to the heating pipe; and a second throttling device, which is connected to the heat balancing device. The heat balancing device (specifically, the heat balancing pipe within the heat balancing device) is connected to the heating pipe to remove excess heat from the device, ensuring that heat does not accumulate excessively and thus maintaining the overall heat balance of the device. When the heat generated in the device exceeds the required heat, the heat balancing device will activate its heat dissipation function, exchanging heat with a cooling medium (such as cooling water or air) to dissipate the excess heat into the environment. The heat balancing device dynamically adjusts the distribution and removal of heat according to the real-time operating status of the device, ensuring that the device can operate efficiently and stably.

[0023] In the waste liquid treatment system of this utility model, the refrigerant is compressed into a high-temperature, high-pressure gas by the compressor in the distillation device. During this process, the refrigerant absorbs heat from the outside environment, causing its temperature and pressure to rise significantly. The compressor then delivers the high-temperature, high-pressure gaseous refrigerant to the heating pipe. In the heating pipe, the refrigerant releases its own heat to heat the solvent-containing waste liquid, causing the water it contains to turn into water vapor under the action of heat, while the organic solvent remains in the waste liquid due to its high boiling point. After releasing heat through the heating pipe, the refrigerant undergoes pressure reduction and cooling through the first throttling device, rapidly reducing its pressure and temperature, changing from a high-temperature, high-pressure gas to a low-temperature, low-pressure liquid. The low-temperature, low-pressure liquid refrigerant enters the condensation pipe, where it absorbs heat from the surrounding environment. This heat is mainly the heat from the water vapor flowing from the first cavity to the second cavity. After absorbing ambient heat, the refrigerant evaporates back into gas, while the water vapor condenses back into liquid after absorbing heat, forming clean water, which is stored in the second cavity. The solvent-containing wastewater is treated using a wastewater treatment process based on high-efficiency heat pump technology. The resulting clean water, after distillation, can be discharged in compliance with standards or reused. Furthermore, it can efficiently recover organic solvents, significantly reducing treatment costs and improving energy efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the distillation apparatus according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the waste liquid treatment system according to an embodiment of the present invention. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be understood that the terms "upper," "lower," "top surface," "bottom surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model. Furthermore, the terms "first" and "second" are used only to distinguish an entity or operation from another entity or operation, and do not require or imply any actual relationship, order, or relative importance between these entities or operations.

[0028] Figure 1 This is a schematic diagram of the distillation apparatus according to an embodiment of the present invention.

[0029] Please refer to Figure 1 A distillation apparatus 10 includes: a first chamber 1001 for storing solvent-containing waste liquid 101; a heating pipe 102 disposed within the first chamber 1001, wherein a refrigerant (not shown) within the heating pipe 102 releases heat to heat the solvent-containing waste liquid 101, causing the water in the solvent-containing waste liquid 101 to boil and evaporate to form water vapor; a first throttling device 103 connected to the heating pipe 102 for depressurizing and cooling the refrigerant; and a condensing pipe 104 connected to the first throttling device 102. A flow device 103 is connected, and the refrigerant in the condensing pipe 104 absorbs heat from the water vapor to liquefy the water vapor into clean water 105; a compressor 106 is connected to the heating pipe 102 and the condensing pipe 104 respectively, and the compressor 106 is used to compress the refrigerant and deliver the refrigerant to circulate in the heating pipe 102 and the condensing pipe 104; a second cavity 1002 is connected to the first cavity 1001, and the condensing pipe 104 is disposed in the second cavity 1002, which is used to store the clean water 105.

[0030] The compressor 106 in the distillation apparatus 10 is the core component of the entire heat conversion process. The compressor 106 compresses the refrigerant from a low-temperature, low-pressure gas to a high-temperature, high-pressure gas. During this process, the refrigerant absorbs heat from the surrounding environment, causing its temperature and pressure to rise significantly. At this time, the refrigerant carries a large amount of heat, preparing for subsequent heat utilization. The high-temperature, high-pressure refrigerant gas enters the heating pipe 102. Inside the heating pipe 102, the refrigerant releases its own heat to heat the solvent-containing waste liquid 101, causing it to evaporate. The water in the solvent-containing waste liquid 101 turns into water vapor under the influence of heat, while the organic solvent remains in the waste liquid due to its high boiling point. This process achieves effective heat transfer from the refrigerant to the solvent-containing waste liquid 101, and also completes the initial separation of the solvent-containing waste liquid 101. After releasing heat through the heating pipe 102, the refrigerant is then depressurized and cooled by the first throttling device 103. The pressure and temperature of the refrigerant rapidly decrease, changing from a high-temperature, high-pressure gas to a low-temperature, low-pressure liquid. This process is a crucial step in heat conversion. Through the rapid pressure reduction of the first throttling device 103, the temperature of the refrigerant decreases, creating conditions for the subsequent condensation process. The low-temperature, low-pressure liquid refrigerant enters the condensation pipe 104. In the condensation pipe 104, the liquid refrigerant absorbs heat from the surrounding environment, primarily the heat from the water vapor flowing from the first cavity 1001 to the second cavity 1002. After absorbing ambient heat, the refrigerant evaporates back into gas, while the water vapor, after absorbing heat, condenses into liquid to form clean water 105, which is stored in the second cavity. This process not only achieves the condensation and recovery of water vapor but also completes the recycling of heat through the absorption of ambient heat by the refrigerant's evaporation.

[0031] The entire heat conversion process achieves heat transfer through the efficient operation of a heat pump system, and separates the organic solvent and water in the solvent-containing waste liquid 101 through a distillation process. This not only improves energy utilization efficiency but also achieves efficient waste liquid treatment and organic solvent recovery and reuse. By treating the solvent-containing waste liquid 101 using a high-efficiency heat pump technology, the final distilled clean water 105 can meet discharge standards or be reused. Furthermore, it efficiently recovers organic solvents, significantly reducing treatment costs and substantially improving energy utilization efficiency.

[0032] In this embodiment, the distillation apparatus 10 further includes a storage tank 100, the internal cavity of which is divided into a first cavity 1001 and a second cavity 1002. The first cavity 1001 and the second cavity 1002 are integrated into a single storage tank 100, enabling efficient space utilization and separating different types of substances for storage to avoid mutual interference. Furthermore, the integrated storage tank 100 design simplifies the overall structure, reduces the number of parts, lowers manufacturing costs and maintenance difficulty, and improves the overall structure's sealing, stability, and durability.

[0033] In this embodiment, the internal cavity of the storage box 100 is further divided into connecting cavities 1003. The connecting cavities 1003 communicate with both the first cavity 1001 and the second cavity 1002, and are located above both cavities. The connecting cavities 1003, situated above and communicating with both cavities, primarily function to facilitate fluid communication and distribution between the two cavities. They also balance the pressure within the two cavities, ensuring a smooth flow of the evaporated water vapor and preventing backflow due to pressure differences. Furthermore, the connecting cavities 1003 act as a buffer zone, improving the overall operating efficiency and reliability of the storage box 100.

[0034] In this embodiment, the distillation apparatus 10 further includes a negative pressure device 107, which controls the vacuum level within the first chamber 1001 and the second chamber 1002. The negative pressure device 107 creates a negative pressure environment by evacuating air from the first and second chambers. Under negative pressure, the moisture in the solvent-containing waste liquid 101 evaporates more easily to form water vapor. Simultaneously, the negative pressure environment also helps the water vapor condense into liquid more efficiently. The negative pressure device 107 can precisely control the vacuum level within the first chamber 1001 and the second chamber 1002 through frequency conversion or valve flow rate adjustment, ensuring stable operation of the entire distillation process. Vacuum level adjustments can be made to adapt to different processing requirements, thereby optimizing the overall performance of the apparatus. By maintaining a negative pressure environment, the negative pressure device 107 not only improves the efficiency of waste liquid treatment but also reduces energy consumption and lowers processing costs.

[0035] In this embodiment, the negative pressure device 107 employs a vacuum pump, specifically a water ring vacuum pump. The water ring vacuum pump utilizes water to form a water ring to achieve the vacuum function. It has a simple structure, stable operation, and is suitable for use in complex working conditions containing dust and water vapor. Furthermore, the water ring vacuum pump has good sealing performance, effectively preventing gas leakage. Simultaneously, the water circulation removes heat, maintaining a stable pump body temperature and extending its service life. In addition, the water ring vacuum pump can also handle gases containing small amounts of liquid to a certain extent, making it highly adaptable and very suitable for processes requiring a negative pressure environment in waste liquid treatment.

[0036] In this embodiment, the heating pipe 102 is arranged in a spiral or serpentine pattern; the condensing pipe 104 is also arranged in a spiral or serpentine pattern. The spiral or serpentine arrangement significantly increases the surface area of ​​the pipes, thereby improving heat transfer efficiency. Simultaneously, the spiral or serpentine arrangement allows for the arrangement of more pipe lengths within a limited space, making the entire device more compact.

[0037] In this embodiment, the first throttling device 103 employs an electronic expansion valve. The electronic expansion valve can precisely control the refrigerant flow rate, responding quickly to system demands via electronic signals to achieve precise throttling and pressure reduction, thereby optimizing the operating efficiency of the heat pump system. Its high adjustment precision allows it to adapt to dynamic changes under different operating conditions, ensuring efficient system operation under various loads. Furthermore, the electronic expansion valve has a fast response speed, enabling timely adjustment of the refrigerant flow rate, reducing system energy consumption, and improving energy utilization efficiency. This intelligent throttling control method not only enhances system stability and reliability but also reduces operating costs, making it one of the key components for achieving efficient operation of the ultra-efficient heat pump distillation unit 10.

[0038] In this embodiment, the distillation apparatus 10 further includes: a heat balancing device 108, which is connected to the heating pipe 102; and a second throttling device 109, which is connected to the heat balancing device 108. The heat balancing device 108 (specifically, the heat balancing pipe 1081 within the heat balancing device 108) is connected to the heating pipe 102 to remove excess heat from the apparatus, ensuring that heat does not accumulate excessively and thus maintaining the overall thermal balance of the apparatus. When the heat generated in the apparatus exceeds the required heat, the heat balancing device 108 will activate its heat dissipation function, exchanging heat with a cooling medium (such as cooling water or air) to dissipate the excess heat into the environment. This process can be achieved by adjusting the flow rate or temperature of the cooling medium, thereby precisely controlling the system's heat output. The heat balancing device 108 dynamically adjusts the distribution and removal of heat according to the real-time operating status of the apparatus, ensuring that the apparatus can operate efficiently and stably.

[0039] In this embodiment, the second throttling device 109 is an electronic expansion valve. The specific characteristics and advantages of the electronic expansion valve are as described above and will not be repeated here.

[0040] In this embodiment, the heat balance pipe 1081 is arranged in a spiral or serpentine pattern. The specific advantages of the spiral or serpentine arrangement are as described above and will not be repeated here.

[0041] It should be noted that, in this embodiment, the heating pipe 102 and the condensing pipe 104 are respectively disposed within the first cavity 1001 and the second cavity 1002 of the storage tank 100, while the compressor 106 is installed outside the storage tank 100. This layout requires that the pipe connections must penetrate the side wall of the storage tank 100. To ensure the airtightness and vacuum of the first cavity 1001 and the second cavity 1002, sealing components (such as sealing rings or sealant) are required at the locations where the pipes penetrate the side wall.

[0042] The specific connection method between the pipes, and between the pipes and the compressor 106, is as follows: the outlet of the compressor 106 is connected to the inlet of the heating pipe 102. The outlet of the heating pipe 102 is divided into two paths, one of which is connected to the inlet of the condensing pipe 104, and the other is connected to the inlet of the heat balance pipe 1081 in the heat balance device 108. The outlets of the condensing pipe 104 and the heat balance pipe 1081 are then reconnected to the inlet of the compressor 106, thus forming a closed-loop piping system.

[0043] The advantage of this design lies in the fact that by arranging the heating pipe 102 and the condensing pipe 104 in two separate cavities, the heat exchange processes at different stages can be effectively isolated, improving the system's thermal efficiency and stability. Simultaneously, placing the compressor 106 outside the cavities not only facilitates maintenance and repair but also reduces heat accumulation within the cavities, further optimizing system performance. The use of sealing components ensures the airtightness of the entire system, preventing outside air from entering or internal gas leakage, maintaining the required vacuum level, which is crucial for the system's efficient operation. Through this carefully designed pipe layout and connection method, the entire device can achieve efficient heat circulation and utilization, meeting process requirements while improving energy efficiency.

[0044] In this embodiment, after the solvent-containing waste liquid 101 is distilled, the solvent-containing concentrate that remains in the first cavity 1001 can be further purified by outsourcing.

[0045] Figure 2 This is a schematic diagram of the waste liquid treatment system according to an embodiment of the present invention.

[0046] Accordingly, this utility model also provides a waste liquid treatment system 20, please refer to... Figure 2 And continue to combine with references Figure 1 It includes: a distillation apparatus 10 as described in any of the above embodiments; a waste liquid tank 200, the waste liquid tank 200 being used to store the solvent-containing waste liquid 101, the waste liquid tank 200 being connected to the first cavity 1001.

[0047] The compressor 106 in the distillation apparatus 10 is the core component of the entire heat conversion process. The compressor 106 compresses the refrigerant from a low-temperature, low-pressure gas to a high-temperature, high-pressure gas. During this process, the refrigerant absorbs heat from the surrounding environment, causing its temperature and pressure to rise significantly. At this time, the refrigerant carries a large amount of heat, preparing for subsequent heat utilization. The high-temperature, high-pressure refrigerant gas enters the heating pipe 102. Inside the heating pipe 102, the refrigerant releases its own heat to heat the solvent-containing waste liquid 101, causing it to evaporate. The water in the solvent-containing waste liquid 101 turns into water vapor under the influence of heat, while the organic solvent remains in the waste liquid due to its high boiling point. This process achieves effective heat transfer from the refrigerant to the solvent-containing waste liquid 101, and also completes the initial separation of the solvent-containing waste liquid 101. After releasing heat through the heating pipe 102, the refrigerant is then depressurized and cooled by the first throttling device 103. The pressure and temperature of the refrigerant rapidly decrease, changing from a high-temperature, high-pressure gas to a low-temperature, low-pressure liquid. This process is a crucial step in heat conversion. Through the rapid pressure reduction of the first throttling device 103, the temperature of the refrigerant decreases, creating conditions for the subsequent condensation process. The low-temperature, low-pressure liquid refrigerant enters the condensation pipe 104. In the condensation pipe 104, the liquid refrigerant absorbs heat from the surrounding environment, primarily the heat from the water vapor flowing from the first cavity 1001 to the second cavity 1002. After absorbing ambient heat, the refrigerant evaporates back into gas, while the water vapor, after absorbing heat, condenses into liquid to form clean water 105, which is stored in the second cavity. This process not only achieves the condensation and recovery of water vapor but also completes the recycling of heat through the absorption of ambient heat by the refrigerant's evaporation.

[0048] The entire heat conversion process achieves heat transfer through the efficient operation of a heat pump system, and separates the organic solvent and water in the solvent-containing waste liquid 101 through a distillation process. This not only improves energy utilization efficiency but also achieves efficient waste liquid treatment and organic solvent recovery and reuse. By treating the solvent-containing waste liquid 101 using a high-efficiency heat pump technology, the final distilled clean water 105 can meet discharge standards or be reused. Furthermore, it efficiently recovers organic solvents, significantly reducing treatment costs and substantially improving energy utilization efficiency.

[0049] In this embodiment, the waste liquid treatment system 20 further includes a first pumping pipeline 201, which is connected to both the waste liquid tank 200 and the first cavity 1001. The first pumping pipeline 201 is used to transport the solvent-containing waste liquid 101 stored in the waste liquid tank 200 to the first cavity 1001. The function of the first pumping pipeline 201 is to transport the solvent-containing waste liquid 101 stored in the waste liquid tank 200 to the first cavity 1001. By connecting the waste liquid tank 200 and the first cavity 1001 through a pipeline, the solvent-containing waste liquid 101 is drawn from the waste liquid tank 200 and sent into the first cavity 1001 using the power of a pump, providing raw materials for subsequent evaporation and treatment processes, and ensuring that the system can efficiently treat the solvent-containing waste liquid 101.

[0050] In this embodiment, the wastewater treatment system 20 further includes a second pumping pipeline 202, which is connected to the second cavity 1002. The second pumping pipeline 202 is used to discharge the clean water 105 stored in the second cavity 1002. The function of the second pumping pipeline 202 is to discharge the clean water 105 stored in the second cavity 1002 from the system. The second pumping pipeline 202 connects the second cavity 1002 to an external discharge pipe. Through pumping, the treated clean water 105 that meets the discharge standards is extracted from the second cavity 1002 and discharged to a designated location, ensuring that the treated water resources can be safely and effectively reused or discharged, while maintaining the water level balance and operational stability within the system.

[0051] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A distillation apparatus, characterized in that, include: The first cavity is used to store solvent-containing waste liquid; A heating pipe is disposed in the first cavity. The refrigerant in the heating pipe releases heat to heat the solvent-containing waste liquid, causing the water in the solvent-containing waste liquid to boil and evaporate to form water vapor. A first throttling device is connected to the heating pipe and is used to reduce the pressure and cool the refrigerant. A condenser pipe is connected to the first throttling device, and the refrigerant in the condenser pipe absorbs heat from the water vapor to liquefy the water vapor into clean water; The compressor is connected to the heating pipe and the condensing pipe respectively. The compressor is used to compress the refrigerant and deliver the refrigerant to circulate in the heating pipe and the condensing pipe. The second cavity is connected to the first cavity, and the condensation pipe is disposed in the second cavity. The second cavity is used to store the clean water.

2. The distillation apparatus as described in claim 1, characterized in that, Also includes: The storage box has a cavity inside which is divided into a first cavity and a second cavity.

3. The distillation apparatus as described in claim 2, characterized in that, The internal cavity of the storage box is further divided into connecting cavities, which are connected to the first cavity and the second cavity respectively, and are located above the first cavity and the second cavity.

4. The distillation apparatus as described in claim 1, characterized in that, It also includes a negative pressure device, which is used to control the vacuum level in the first cavity and the second cavity.

5. The distillation apparatus as described in claim 4, characterized in that, The negative pressure device includes a vacuum pump; the vacuum pump includes a water ring vacuum pump.

6. The distillation apparatus as described in claim 1, characterized in that, The heating pipes are arranged in a spiral or serpentine pattern; the condensing pipes are arranged in a spiral or serpentine pattern.

7. The distillation apparatus as described in claim 1, characterized in that, The first throttling device includes an electronic expansion valve.

8. The distillation apparatus as described in claim 1, characterized in that, Also includes: A heat balancing device, wherein the heat balancing device is connected to the heating pipe; The second throttling device is connected to the heat balancing device.

9. The distillation apparatus as described in claim 8, characterized in that, The second throttling device includes an electronic expansion valve.

10. A waste liquid treatment system, characterized in that, include: The distillation apparatus as described in any one of claims 1 to 9; Waste liquid tank, which is used to store the solvent-containing waste liquid, and is connected to the first cavity.

11. The waste liquid treatment system as described in claim 10, characterized in that, Also includes: A first pumping pipeline is connected to the waste liquid tank and the first cavity respectively. The first pumping pipeline is used to transport the solvent-containing waste liquid stored in the waste liquid tank to the first cavity.

12. The waste liquid treatment system as described in claim 10, characterized in that, Also includes: A second pumping line is connected to the second cavity, and the second pumping line is used to discharge the clean water stored in the second cavity.

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