Ethanol purification device for medical wastewater

Abstract

The utility model relates to the technical field of ethanol purification of medical wastewater, especially ethanol purification device of medical wastewater, solves the problem of poor filtering effect and higher cost when water cooling ethanol in prior art. Ethanol purification device of medical wastewater, including filter cartridge, the inside fixedly connected with the top plate of filter cartridge, the surface of top plate is connected with the water inlet pipe, the inside of filter cartridge is equipped with several filter layers that distribute up and down, the surface of filter layer is equipped with the hole of going in and out, the top of top plate is equipped with several water outlet holes, the side of filter cartridge is connected with the water outlet pipe, the water outlet pipe is connected with the heater, and one end of heater is connected with the discharge pipe, and one end of discharge pipe is equipped with the air cooling mechanism. The utility model discloses the guidance of flow guide block makes the water flow path complexification, avoids '' short circuit '', and the filtering time is increased significantly, can improve the filtering effect while guaranteeing the filtering efficiency, and reduces the cost of condensation.

Description

Technical Field

[0001] This utility model relates to the field of ethanol purification technology for pharmaceutical wastewater, and more particularly to an ethanol purification device for pharmaceutical wastewater. Background Technology

[0002] Ethanol, commonly known as alcohol, is a common organic compound with wide applications in daily life and industry. Ethanol purification is the process of removing impurities from ethanol through physical or chemical methods to obtain high-purity ethanol. Pharmaceutical wastewater mainly comes from drug synthesis, formulation production, drug testing, and hospitals, and has a complex composition. Depending on the production process, the ethanol concentration may range from tens of milligrams per liter to thousands of milligrams per liter. A 75% (volume fraction) ethanol solution has the best bactericidal effect and can be used for skin and medical device disinfection.

[0003] Chinese Patent Publication No. CN215667782U discloses a wastewater extraction and recovery device, comprising a reboiler, a distillation column, a condenser, a distilled ethanol collection tank, a membrane dehydration device, and a finished ethanol collection tank. This invention initially purifies the ethanol in the distillation column to obtain distilled ethanol with a water content of approximately 10%, and then further purifies it using a membrane dehydration device. The molecular sieve membrane completely separates water and ethanol by blocking large molecules, ultimately yielding finished ethanol with a water content of less than 1%, achieving a high ethanol recovery rate.

[0004] For existing ethanol purification devices for pharmaceutical wastewater, in actual use, the wastewater drips naturally from top to bottom during filtration, resulting in insufficient contact time with the filter medium. The water flow is prone to forming a "short circuit" along the inner wall of the filter cylinder, failing to pass through the filter medium sufficiently, which affects both filtration efficiency and effectiveness. When ethanol is purified after wastewater filtration, water cooling and condensation are used for ethanol evaporation and purification, which results in high costs for water intake, water treatment, and sewage discharge, restricts factory site selection, and poses a risk of freezing in the water cooling system during winter, which may lead to pipe rupture and affect production continuity. Utility Model Content

[0005] The purpose of this invention is to provide an ethanol purification device for pharmaceutical wastewater, which solves the problems of poor filtration effect and high cost of water-cooled ethanol in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An ethanol purification device for pharmaceutical wastewater includes a filter cylinder with a top plate fixedly connected inside. A water inlet pipe is connected to the surface of the top plate. The filter cylinder has several vertically distributed filter layers inside, with inlet and outlet holes on the surface of each filter layer. Several water outlet holes are opened at the top of the top plate. A water outlet pipe is connected to the side of the filter cylinder and to a heater. One end of the heater is connected to a discharge pipe, and one end of the discharge pipe is equipped with an air-cooling mechanism.

[0008] Preferably, the air-cooling mechanism includes several branch pipes connected to the side of the discharge pipe, and one end of each branch pipe is connected to an air-cooling coil.

[0009] Preferably, the bottom of the air-cooled coil is fixedly connected to a carrier box, the bottom of the carrier box is fixedly connected to several support rods, the bottom of the carrier box is fixedly connected to two air-cooled fans, and the top of the carrier box is fixedly connected to a protective grille.

[0010] Preferably, a gate valve is provided between the branch pipe and the air-cooled coil, and a drain valve is provided at one end of the discharge pipe.

[0011] Preferably, the bottom of the filter cartridge is provided with a sedimentation chamber.

[0012] Preferably, a flow guide block is fixedly connected inside the filter cartridge.

[0013] This utility model has the following beneficial effects:

[0014] When it is necessary to filter and remove impurities from pharmaceutical wastewater, the wastewater can enter the bottom of the filter cylinder through the inlet pipe. Then, the wastewater flows from bottom to top, allowing it to better contact the filter media inside the filter layer. The guide block complicates the water flow path, avoiding "short circuits" and significantly increasing the filtration time. The wastewater is forced to pass through multiple layers of filter media, and the contact area and time between the wastewater and the filter media are both increased. This improves the filtration effect while ensuring filtration efficiency, allowing the filtered liquid to be processed better. During air cooling, the modular carrier box, the air-cooling coil and the air-cooling fan above condense the ethanol vapor. This facilitates air-cooled condensation while reducing condensation costs, providing a more sustainable and cost-effective cooling structure for ethanol distillation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 Side view of the air-cooling mechanism;

[0018] Figure 3 for Figure 2 Side view of the middle carrier box;

[0019] Figure 4 for Figure 1 Side view of the middle filter cartridge;

[0020] Figure 5 for Figure 4 A cross-sectional view of the middle filter cartridge.

[0021] In the diagram: 1. Filter cylinder; 2. Top plate; 3. Inlet pipe; 4. Filter chamber; 5. Inlet / outlet hole; 6. Outlet hole; 7. Outlet pipe; 8. Heater; 9. Discharge pipe; 10. Air-cooling mechanism; 11. Guide block; 12. Sedimentation chamber; 101. Branch pipe; 102. Air-cooling coil; 103. Support box; 104. Support rod; 105. Air-cooling fan; 106. Gate valve; 107. Drain valve; 108. Protective grille. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] Reference Figure 1-5An ethanol purification device for pharmaceutical wastewater includes a filter cylinder 1. A top plate 2 is fixedly connected inside the filter cylinder 1, and an inlet pipe 3 is connected to the surface of the top plate 2. When filtering pharmaceutical wastewater, the wastewater is first poured into the filter cylinder 1 through the inlet pipe 3. The wastewater then flows directly through the inlet pipe 3 to the bottom of the filter cylinder 1 by gravity, where it accumulates. As more wastewater continues to enter through the inlet pipe 3, the water level inside the filter cylinder 1 rises. The filter cylinder 1 is equipped with... Several filter layers 4 are arranged vertically. Each filter layer 4 has inlet / outlet holes 5 on its surface. As the water level of the pharmaceutical wastewater inside the filter cylinder 1 continuously rises, the wastewater can enter and exit the filter layers 4 through the inlet / outlet holes 5. The filtration of the filter layers 4 removes impurities from the wastewater. The wastewater flows upward through the inlet / outlet holes 5 of the filter layers 4 until it reaches the top plate 2, leaving only ethanol and some other residual solutions. Several outlet holes 6 are provided at the top of the top plate 2. The filtered wastewater flows through the outlet holes 6 of the top plate 2. The wastewater enters the upper layer of filter cylinder 1. The top of the inlet pipe 3 is higher than that of filter cylinder 1, so the filtered wastewater will not re-enter the inlet pipe 3. The side of filter cylinder 1 is connected to the outlet pipe 7. The liquid leaving the filter layer 4 through the outlet hole 6 can leave the filter cylinder 1 through the outlet pipe 7. The outlet pipe 7 is connected to the heater 8. The filtered liquid is heated in the heater 8. Separation is achieved by utilizing the boiling point difference between ethanol (78.3℃) and water (100℃) and other impurities. Ethanol is evaporated to form ethanol vapor, while water and other impurities are retained and discharged. One end of the heater 8 is connected to the discharge pipe 9, which is connected to the top of the drain pipe of the heater 8, so that the ethanol vapor can leave the drain pipe of the heater 8 from a high position. One end of the discharge pipe 9 is equipped with an air-cooling mechanism 10. After entering the drain pipe, the ethanol vapor can enter the air-cooling mechanism 10 for air cooling, thereby condensing the ethanol vapor back into ethanol. Since the boiling point of ethanol (78.3℃) is higher than room temperature, using air cooling will not reduce efficiency or consume more energy, thus reducing water consumption.

[0024] Furthermore, the air-cooling mechanism 10 includes several branch pipes 101 connected to the side of the discharge pipe 9. One end of each branch pipe 101 is connected to an air-cooling coil 102. Ethanol vapor enters the interior of the several branch pipes 101 through the discharge pipe 9, and then enters the air-cooling coil 102 through the branch pipes 101 for air-cooling condensation. The condensed ethanol is then discharged through the discharge pipe 9.

[0025] Furthermore, a support box 103 is fixedly connected to the bottom of the air-cooled coil 102. Several support rods 104 are fixedly connected to the bottom of the support box 103, and two air-cooled fans 105 are fixedly connected to the bottom of the support box 103. A protective grille 108 is fixedly connected to the top of the support box 103. When cooling of the air-cooled coil 102 is required, the air-cooled fans 105 can be turned on. The air-cooled fans 105 cool the air-cooled coil 102 contained in the support box 103 and blow the air from top to bottom. The support box 103 is supported by the support rods 104, so the air-cooled fans 105 and the support box 102 are connected to the support box 103. The ground is at a certain distance, which allows the hot air to blow towards the ground without affecting the air-cooled coil 102. The top of the carrier box 103 can be exposed to facilitate the air supply after the air-cooled fan 105 is started, ensuring that the air-cooled fan 105 can condense the ethanol vapor normally. The condensed ethanol liquid then flows back to the discharge pipe 9 for discharge and collection, which can ensure the purity of ethanol. The protective grille 108 can protect the air-cooled coil 102 without blocking the air supply channel of the air-cooled fan 105, thus protecting the air-cooled coil 102 without affecting the air-cooled fan 105.

[0026] Furthermore, a gate valve 106 is provided between the branch pipe 101 and the air-cooled coil 102, and a drain valve 107 is provided at one end of the discharge pipe 9. The air-cooled coils 102 are relatively independent modules. When needed, the carrier box 103 is placed at the branch pipe 101, and then the branch pipe 101 and the air-cooled coil 102 are sealed and connected by the gate valve 106, so that ethanol vapor can enter the interior of the air-cooled coil 102 through the gate valve 106, and then the ethanol is condensed by air cooling. The ethanol liquid flows back to the discharge pipe 9 through the branch pipe 101, and the ethanol liquid is discharged at one end of the discharge pipe 9 through the drain valve 107.

[0027] Furthermore, a sedimentation chamber 12 is provided at the bottom of the filter cartridge 1. After the pharmaceutical wastewater enters the bottom of the filter cartridge 1 through the inlet pipe 3, the solid impurities and suspended matter inside it will settle inside the sedimentation chamber 12. The sedimentation chamber 12 accommodates these solid impurities, making it convenient for the remaining liquid to flow upward for filtration and purification.

[0028] Furthermore, a flow guide block 11 is fixedly connected inside the filter cartridge 1. When the medical wastewater enters and exits the filter layer 4 through the inlet and outlet holes 5, it can be guided by the flow guide block 11, so that the medical wastewater can extend the filtration time and improve the medium contact efficiency, thus ensuring the filtration efficiency.

[0029] In summary:

[0030] When treating pharmaceutical wastewater to recover ethanol, the wastewater is first fed into the filter cartridge 1 through the inlet pipe 3. Impurities are settled in the sedimentation chamber 12. As the wastewater accumulates inside the filter cartridge 1, the water level slowly rises. During this process, the wastewater can enter and exit the filter layer 4 through the inlet and outlet holes 5, facilitating filtration. The wastewater continues to pass through all filter layers 4. Within the filter layers 4, the flow is aided by the guide blocks 11, extending the filtration time and improving media contact efficiency, thus ensuring filtration efficiency. After passing through all the filter cartridges 1, the water enters the top plate 2 through the outlet 6. The top plate 2 is lower than the top of the inlet pipe 3, so the filtered water enters the heater 8 through the outlet pipe 7. It separates the ethanol (78.3℃) from the water (100℃) and other impurities by utilizing the boiling point difference, evaporating the ethanol into vapor. The vapor is then discharged through the outlet pipe 9. When air-cooled ethanol vapor is needed, several carrier boxes 103 are moved closer to the branch pipe 101, and then the branch pipe 101 is connected to the air-cooling coil 102 through the gate valve 106, starting the air-cooling fan 10. 5. Ethanol vapor is condensed by air cooling. The support rod 104 supports the height of the carrier box 103, allowing the hot air blown by the air-cooling fan 105 to blow downwards. The condensed ethanol liquid then enters the discharge pipe 9 through the branch pipe 101 and is discharged through the drain valve 107 at one end of the discharge pipe 9. The air-cooling coil 102 is protected by the protective grille 108, ensuring that the gas source of the air-cooling fan 105 is not affected while protecting the air-cooling coil 102, thus enabling normal air cooling. With the above structure, ethanol can be recycled from pharmaceutical wastewater. At the same time, the flow of pharmaceutical wastewater from bottom to top, in conjunction with the guide block 11, complicates the flow path of the pharmaceutical wastewater, avoids "short circuits", and significantly increases the filtration time. The flow of pharmaceutical wastewater is forced to pass through multiple layers of filter media, which improves both the contact area and time, thereby enhancing the filtration effect without affecting the filtration efficiency. After filtration, the ethanol is heated into ethanol vapor by taking advantage of its different boiling points. Then, the ethanol vapor is condensed by a modular air-cooling structure, which ensures condensation efficiency while avoiding water waste and saving costs. The modular air-cooling structure also facilitates assembly.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An ethanol purification device for pharmaceutical wastewater, comprising a filter cartridge (1), characterized in that, The filter cylinder (1) is fixedly connected to a top plate (2), and the surface of the top plate (2) is connected to a water inlet pipe (3). The filter cylinder (1) is provided with several filter layers (4) arranged vertically. The surface of the filter layer (4) is provided with inlet and outlet holes (5). The top of the top plate (2) is provided with several water outlet holes (6). The side of the filter cylinder (1) is connected to a water outlet pipe (7). The water outlet pipe (7) is connected to a heater (8). One end of the heater (8) is connected to a discharge pipe (9). One end of the discharge pipe (9) is provided with a wind-cooling mechanism (10).

2. The ethanol purification apparatus for pharmaceutical wastewater according to claim 1, characterized in that, The air-cooling mechanism (10) includes a number of branch pipes (101) connected to the side of the discharge pipe (9), and one end of the branch pipe (101) is connected to an air-cooling coil (102).

3. The ethanol purification apparatus for pharmaceutical wastewater according to claim 2, characterized in that, The bottom of the air-cooled coil (102) is fixedly connected to a carrier box (103), the bottom of the carrier box (103) is fixedly connected to several support rods (104), the bottom of the carrier box (103) is fixedly connected to two air-cooled fans (105), and the top of the carrier box (103) is fixedly connected to a protective grille (108).

4. The ethanol purification apparatus for pharmaceutical wastewater according to claim 2, characterized in that, A gate valve (106) is provided between the branch pipe (101) and the air-cooled coil (102), and a drain valve (107) is provided at one end of the discharge pipe (9).

5. The ethanol purification apparatus for pharmaceutical wastewater according to claim 1, characterized in that, The bottom of the filter cartridge (1) is provided with a sedimentation chamber (12).

6. The ethanol purification apparatus for pharmaceutical wastewater according to claim 1, characterized in that, A flow guide block (11) is fixedly connected inside the filter cylinder (1).

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