A negative pressure separation device

Abstract

The utility model relates to the technical field of separation equipment, concretely relates to a negative pressure separation device, including separation jar, heating mechanism, negative pressure mechanism, temperature control mechanism and gas -liquid separation mechanism, can be separated to the component in the organic waste liquid through distillation, adopts the distillation under the negative pressure environment, reduces operating temperature, reduces energy consumption, in the separation process, through setting up temperature control mechanism can be accurate control to operating temperature, guarantees more optimal separation effect, promotes recovery rate, simultaneously is provided with gas -liquid separation mechanism, can further improve the separation effect, improve recovery rate, avoid resource waste.

Description

Technical Field

[0001] This utility model relates to the field of separation equipment technology, specifically to a negative pressure separation device. Background Technology

[0002] Distillation is the most widely used separation method in various fields such as chemical engineering, petroleum refining, pharmaceuticals, food, and environmental protection. Its basic principle is to utilize the differences in volatility (boiling point) of the components in a mixture, achieving separation through heating for vaporization and condensation for liquefaction. Different distillation processes are selected based on the desired separation objective, such as atmospheric distillation, vacuum distillation, steam distillation, or molecular distillation.

[0003] Vacuum distillation, also known as reduced pressure distillation, is a distillation process conducted under sub-atmospheric pressure (negative pressure or vacuum). By reducing the system pressure, the boiling point of the liquid decreases, thus achieving low-temperature separation. Due to its significant advantages in lowering operating temperature, preventing material decomposition, and ensuring product quality and yield, vacuum distillation has wide applications in petrochemicals, fine chemicals, pharmaceuticals, food, fragrances, and polymer materials. However, precise temperature control is crucial in vacuum distillation; improper temperature control can negatively impact separation efficiency. Based on these issues, existing technologies require further improvement. Utility Model Content

[0004] The purpose of this invention is to provide a negative pressure separation device to solve the existing technical problems in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a negative pressure separation device is provided, including a separation tank, a heating mechanism, a negative pressure mechanism, a temperature control mechanism, and a gas-liquid separation mechanism. The separation tank is filled with a mixed liquid phase to be separated. The heating mechanism is located at the bottom of the separation tank for heating the separation tank. The negative pressure mechanism provides a negative pressure environment for the separation tank. The temperature control mechanism is located on the separation tank for temperature regulation. The gas-liquid separation mechanism is located at the end of the separation tank for gas-liquid separation.

[0006] Based on the above technical solution, the temperature control mechanism includes a delivery pipeline, a heating channel, and a cooling channel. One end of the delivery pipeline is connected to the separation tank via a transfer pump, and the other end is connected to the separation tank after passing through the heating channel and the cooling channel in sequence. A heating pipeline is sleeved on the outside of the heating channel, and a cooling pipeline is sleeved on the outside of the cooling channel. Circulating steam is provided in the heating pipeline, and a circulating cooling medium is provided in the cooling pipeline.

[0007] Based on the above technical solution, the gas-liquid separation mechanism includes a separation tower, a packing layer and a venting layer. The packing layer and the venting layer are both arranged inside the separation tower and are arranged alternately. The packing layer is filled with mesh packing.

[0008] Based on the above technical solution, the height of the packing layer is 40-200mm, the height of the venting layer is 40-100mm, and the specific surface area of ​​the mesh packing is 700-1000m². 2 / m 3 Its fibrous network structure.

[0009] Based on the above technical solution, the separation tank is also equipped with a circulation device, which includes a circulation pipeline, a circulation pump and a cooling sleeve. One end of the circulation pipeline is connected to the bottom end of the separation tank and the other end is connected to the top end of the separation tank. The circulation pump is installed on the circulation pipeline, and the cooling sleeve is fitted on the circulation pipeline. Circulating cooling water is installed inside the cooling sleeve.

[0010] Based on the above technical solution, the heating mechanism is set as an electric heating bath or an electric heating mantle, and the negative pressure mechanism is set as a vacuum pump.

[0011] Based on the above technical solution, a temperature sensor is installed inside the separation tank, and the temperature sensor is electrically connected to the temperature control mechanism.

[0012] Based on the above technical solution, a first vent valve is provided at the top of the separation tank.

[0013] Based on the above technical solution, the mesh filler is made of PTFE, PE or PP material.

[0014] The beneficial effects of the technical solution provided by this utility model are as follows: This invention provides a negative pressure separation device that can separate components in organic waste liquid by distillation. Distillation is carried out under negative pressure, which reduces operating temperature and energy consumption. During the separation process, a temperature control mechanism can precisely control the operating temperature to ensure better separation effect and improve recovery rate. At the same time, a gas-liquid separation mechanism is provided to further improve the separation effect, improve the recovery rate, and avoid resource waste. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the temperature control mechanism and the gas-liquid separation mechanism in this utility model; Detailed Implementation The present invention will be further described below with reference to the accompanying drawings and embodiments: In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," 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 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0016] In the description of this utility model, it should be understood that the terms "left", "right", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] like Figures 1 to 2 As shown, a negative pressure separation device includes a separation tank 1, a heating mechanism, a negative pressure mechanism, a temperature control mechanism 2, and a gas-liquid separation mechanism 4. The separation tank 1 is filled with a mixed liquid phase to be separated. The heating mechanism is located at the bottom of the separation tank 1 and is used to heat the separation tank 1. The negative pressure mechanism provides a negative pressure environment for the separation tank 1. The temperature control mechanism 2 is located on the separation tank 1 and is used for temperature regulation. The gas-liquid separation mechanism 3 is located at the end of the separation tank 1 and is used for gas-liquid separation.

[0018] This invention provides a negative pressure separation device that can separate components in organic waste liquid through distillation. Distillation is performed under negative pressure, reducing operating temperature and energy consumption. During the separation process, a temperature control mechanism allows for precise temperature control, ensuring better separation results and improving recovery rates. A gas-liquid separation mechanism further enhances the separation effect, improves recovery rates, and avoids resource waste. Specifically, a heating mechanism heats the mixed liquid in the separation tank 1. Different components in the mixed liquid have different boiling points; therefore, substances with lower boiling points evaporate first and are condensed and recovered. The preferentially evaporated gas phase may contain liquid phase substances, which condense during the vapor's ascent and flow back into the separation tank 1 for further distillation and separation. The negative pressure environment within the separation tank 1, created by the negative pressure mechanism, increases the distillation rate and reduces the required distillation temperature, thus lowering energy consumption. More preferably, the heating mechanism is an electric heating bath or heating mantle used to heat the negative pressure tank 1; the negative pressure mechanism employs a vacuum pump to provide a vacuum environment within the separation system.

[0019] Based on the above technical solution, the temperature control mechanism 2 includes a conveying pipeline 21, a heating channel 22, and a cooling channel 23. One end of the conveying pipeline 21 is connected to the separation tank 1 via a transfer pump 24, and the other end is connected to the separation tank 1 after passing through the heating channel 22 and the cooling channel 23 in sequence. A heating pipeline is sleeved on the outside of the heating channel 22, and a cooling pipeline is sleeved on the outside of the cooling channel 23. Circulating steam is provided in the heating pipeline, and a circulating cooling medium is provided in the cooling pipeline.

[0020] When temperature control of the liquid in separation tank 1 is required, the mixed liquid in separation tank 1 is output through the delivery pipeline. If the temperature is too high, only the cooling channel can be opened; if the temperature is too low, only the heating channel can be opened. The mixed liquid is circulated by the transfer pump 24, and the temperature in the tank is precisely controlled in conjunction with the heating channel 22 and the cooling channel 23. The temperature control mechanism 2 in this embodiment has a better temperature control effect. Heating and cooling are controlled independently, making it easier to accurately control the temperature. It has excellent practical performance, especially for drug separation with high temperature control accuracy requirements. Compared with common heating mechanisms such as electric heating that directly heat the separation tank 1, temperature control is more convenient; it also avoids the problem of long natural cooling time and inconvenience caused by overheating when using conventional heating mechanisms.

[0021] Based on the above technical solution, the gas-liquid separation mechanism 4 includes a separation tower 41, a packing layer 42 and a venting layer 43. The packing layer 42 and the venting layer 43 are both arranged inside the separation tower 41 and are arranged alternately. The packing layer 42 is filled with mesh packing.

[0022] Based on the above technical solution, the height of the packing layer 42 is 40-200mm, the height of the venting layer 43 is 40-100mm, and the specific surface area of ​​the mesh packing is 700-1000m². 2 / m 3 Its fibrous network structure.

[0023] Gas-liquid separation can be achieved by setting up a gas-liquid separation mechanism 4. It features a multi-layered packing layer 42 and a venting layer 43. In particular, the use of a high-surface-area fiber mesh structure as packing material greatly improves separation accuracy and processing capacity. Simultaneously, the staggered arrangement of the venting layer and packing layer prevents airflow accumulation and improves separation efficiency. Furthermore, compared to existing technologies, the height of the separation tower can be significantly reduced. Traditional separation towers require a height of 30m to complete the required gas-liquid separation, while this application reduces the height to less than 2m to achieve the desired separation, demonstrating excellent practical performance. Preferably, the fiber mesh structure is formed by winding into a ring shape, and its surface is then fixed with a shell, and it is disposed inside the separation tower.

[0024] Based on the above technical solution, the separation tank 1 is also equipped with a circulation device, which includes a circulation pipeline 51, a circulation pump 52, and a cooling sleeve 53. One end of the circulation pipeline 51 is connected to the bottom end of the separation tank 1, and the other end is connected to the top end of the separation tank 1. The circulation pump 52 is installed on the circulation pipeline 51, and the cooling sleeve 53 is fitted on the circulation pipeline 51. Circulating cooling water is installed inside the cooling sleeve 53.

[0025] Preferably, a circulation device is provided in the separator 1 to realize the circulation and agitation of the liquid, avoid the concentration difference or temperature difference between the upper and lower liquid layers, and effectively prevent the problem of low concentration of the upper liquid and high concentration of the lower liquid layer; at the same time, a cooling sleeve is provided on the circulation pipeline to effectively prevent the liquid temperature from being too high and ensure the distillation separation effect.

[0026] Based on the above technical solution, the heating mechanism is set as an electric heating bath or an electric heating mantle, and the negative pressure mechanism is set as a vacuum pump.

[0027] Based on the above technical solution, a temperature sensor is installed inside the separation tank 1, and the temperature sensor is electrically connected to the temperature control mechanism 2.

[0028] By installing a temperature sensor inside the separation tank, the temperature inside the tank can be monitored in real time, which helps to accurately control the temperature inside the tank.

[0029] Based on the above technical solution, a first vent valve 6 is provided at the top of the separation tank 1.

[0030] Preferably, by providing a first vent valve 11 at the top of the separator 1, nitrogen gas can be introduced to assist in draining the liquid after distillation is completed.

[0031] Based on the above technical solution, the mesh filler is made of PTFE, PE or PP material.

[0032] More preferably, the mesh packing material can be selected from PTFE, PE, or PP materials depending on the temperature of the separated substances, because its specific surface area is much larger than that of metal perforated plate corrugated packing (240-400 μm²). 2 / m 3 This greatly improves separation accuracy and processing capacity.

[0033] The foregoing has shown and described the basic principles and main features of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments. Therefore, the embodiments should be regarded as exemplary and non-limiting. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims within this utility model.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A negative pressure separation device, characterized by, It includes a separation tank (1), a heating mechanism, a negative pressure mechanism, a temperature control mechanism (2), and a gas-liquid separation mechanism (4). The separation tank (1) is filled with a mixed liquid phase to be separated. The heating mechanism is located at the bottom of the separation tank (1) and is used to heat the separation tank (1). The negative pressure mechanism provides a negative pressure environment for the separation tank (1). The temperature control mechanism (2) is located on the separation tank (1) and is used for temperature regulation. The gas-liquid separation mechanism (4) is located at the end of the separation tank (1) and is used for gas-liquid separation.

2. A negative pressure separation device according to claim 1, wherein, The temperature control mechanism (2) includes a conveying pipeline (21), a heating channel (22), and a cooling channel (23). The conveying pipeline (21) is connected to the separation tank (1) at one end through a transfer pump (24), and the other end is connected to the separation tank (1) after passing through the heating channel (22) and the cooling channel (23) in sequence. A heating pipeline is sleeved on the outside of the heating channel (22), and a cooling pipeline is sleeved on the outside of the cooling channel (23). Circulating steam is provided in the heating pipeline, and circulating cooling medium is provided in the cooling pipeline.

3. A negative pressure separation device according to claim 1, wherein, The gas-liquid separation mechanism (4) includes a separation tower (41), a packing layer (42) and a venting layer (43). The packing layer (42) and the venting layer (43) are both arranged inside the separation tower (41) and are arranged alternately. The packing layer (42) is filled with mesh packing.

4. A negative pressure separation device according to claim 3, wherein, The height of the packing layer (42) is 40-200 mm, and the height of the venting layer (43) is 40-100 mm; the specific surface area of ​​the mesh packing is 700-1000 m². 2 / m 3 Its fibrous network structure.

5. The negative pressure separation device of claim 1, wherein, The separation tank (1) is also equipped with a circulation device, which includes a circulation pipeline (51), a circulation pump (52) and a cooling sleeve (53). One end of the circulation pipeline (51) is connected to the bottom end of the separation tank (1), and the other end is connected to the top end of the separation tank (1). The circulation pump (52) is installed on the circulation pipeline (51), and the cooling sleeve (53) is fitted on the circulation pipeline (51). The cooling sleeve (53) is filled with circulating cooling water.

6. The negative pressure separation device of claim 1, wherein, The heating mechanism is configured as an electric heating bath or an electric heating mantle, and the negative pressure mechanism is configured as a vacuum pump.

7. The negative pressure separation device of claim 1, wherein, A temperature sensor is installed inside the separation tank (1), and the temperature sensor is electrically connected to the temperature control mechanism (2).

8. The negative pressure separation device of claim 1, wherein, The top of the separation tank (1) is provided with a first vent valve (11).

9. A negative pressure separation device according to claim 4, wherein, The mesh filler is made of PTFE, PE or PP material.

Images