A kind of anhydrous acetonitrile recovery acetonitrile measuring tank for dehydration

Abstract

The utility model discloses a kind of anhydrous acetonitrile recovery acetonitrile measuring tank for dehydration, which belongs to the technical field of measuring tank, including tank body, the upper end of the tank body is rotatably provided with tank cover;Filtering mechanism, the filtering mechanism includes the first annular fixed block fixedly connected on the inner wall of tank body, the inner wall of the tank cover is fixedly connected with the second annular fixed block, the first annular fixed block and the second annular fixed block are provided with circular hollow plate, sintered metal filter element, ceramic membrane filter and activated carbon column are sequentially arranged in the circular hollow plate from top to bottom.The device is set to filter the acetonitrile liquid after primary dehydration, and the circular hollow plate and the components inside can be conveniently maintained, and the practicability is good, and the measuring assembly is also provided, which can accurately measure the recovery amount of acetonitrile liquid in the tank body, and ensure the accuracy of subsequent deep dehydration.

Description

Technical Field

[0001] This utility model relates to the field of metering tank technology, and in particular to a metering tank for recovering acetonitrile for dehydration of anhydrous acetonitrile. Background Technology

[0002] Anhydrous acetonitrile is an important organic solvent and chemical raw material. In the production and recovery of anhydrous acetonitrile, the dehydration process is crucial, and the recovery and measurement of acetonitrile after initial dehydration affects the quality of the final product and the accuracy of subsequent processing.

[0003] Currently, existing acetonitrile recovery tanks only have simple storage functions, making it difficult to accurately control the amount of acetonitrile recovered in the tank. This can easily lead to inaccurate raw material ratios during subsequent deep dehydration, thus affecting the stability of product quality. At the same time, the acetonitrile liquid after preliminary dehydration may still contain a small amount of impurities. If these impurities are not removed, they will affect the subsequent deep dehydration process. Therefore, to solve this problem, designing a metering tank for recovering acetonitrile for anhydrous acetonitrile dehydration is something we need to consider. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a metering tank for recovering acetonitrile during anhydrous acetonitrile dehydration. Addressing usage issues, it incorporates a filtration mechanism to filter the initially dehydrated acetonitrile liquid and facilitates easy maintenance of the circular hollow plate and its internal components, demonstrating good practicality. Furthermore, it includes a metering component to accurately measure the amount of acetonitrile liquid recovered from the tank, ensuring the accuracy of subsequent deep dehydration.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An acetonitrile recovery metering tank for dehydrating anhydrous acetonitrile includes a tank body with a tank cover rotatably mounted on the upper end of the tank body; a filtration mechanism including a first annular fixing block fixedly connected to the inner wall of the tank body, a second annular fixing block fixedly connected to the inner wall of the tank cover, a circular hollow plate disposed between the first and second annular fixing blocks, and a sintered metal filter element, a ceramic membrane filter, and an activated carbon column arranged sequentially from top to bottom within the circular hollow plate, with multiple water inlets at both the upper and lower ends of the circular hollow plate; and a metering component including a liquid level sensor installed at the bottom of the tank body, a controller disposed on the right side of the tank body, and the liquid level sensor electrically connected to the controller.

[0007] Preferably, a first annular sealing ring is provided at the upper end of the first annular fixing block.

[0008] Preferably, a second annular sealing ring is provided at the lower end of the second annular fixing block.

[0009] Preferably, the front side of the can body is provided with a buckle, and the front side of the can lid is provided with a hook.

[0010] Preferably, the buckle and hook cooperate, and an observation window is provided on the front side of the tank.

[0011] Preferably, a drain pipe is provided on the right side of the tank body, and a drain pipe is provided at the upper end of the tank cover.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] A filtration system is installed, which controls the acetonitrile liquid, after initial dehydration, to pass sequentially through a sintered metal filter element, a ceramic membrane filter, and an activated carbon column as it enters the tank. This effectively removes impurities such as large particles, microparticles, polymers, pigments, and trace amounts of moisture from the acetonitrile liquid, ensuring the smooth progress of subsequent deep dehydration. The circular hollow plate can be maintained and replaced by opening and closing the tank cover, ensuring the effectiveness of filtration. Overall, the system is highly practical. A metering component is also included to collect real-time data on the amount of acetonitrile liquid recovered, effectively ensuring the accuracy of subsequent deep dehydration. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a metering tank for recovering acetonitrile for dehydration of anhydrous acetonitrile proposed in this utility model;

[0015] Figure 2 for Figure 1 A sectional view;

[0016] Figure 3 for Figure 2 Enlarged view of point A.

[0017] In the diagram: 1. Tank body, 2. Tank cover, 3. First annular fixing block, 4. Second annular fixing block, 5. Circular hollow plate, 6. Sintered metal filter element, 7. Ceramic membrane filter, 8. Activated carbon column, 9. Liquid level sensor, 10. Controller, 11. First annular sealing ring, 12. Second annular sealing ring, 13. Fastener, 14. Hook, 15. Observation window, 16. Drain pipe, 17. Inlet pipe, 18. Water inlet. 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] Reference Figures 1-3An acetonitrile recovery metering tank for dehydration of anhydrous acetonitrile includes a tank body 1, a tank cover 2 rotatably mounted on the upper end of the tank body 1, a buckle 13 mounted on the front side of the tank body 1, and a hook 14 mounted on the front side of the tank cover 2. The buckle 13 and the hook 14 cooperate, which is the prior art. By controlling the buckle 13 to hook the hook 14, a stable connection between the tank cover 2 and the tank body 1 can be achieved. An observation window 15 is mounted on the front side of the tank body 1, which can be used to observe the acetonitrile liquid in the tank body 1 at any time. A drain pipe 16 is mounted on the right side of the tank body 1, and a sealing valve (which is in the closed state by default) is mounted inside the drain pipe 16. The drain pipe 16 is used to discharge the recovered acetonitrile liquid in the tank body 1. An inlet pipe 17 is mounted on the upper end of the tank cover 2.

[0020] The system also includes a filtration mechanism, which comprises a first annular fixing block 3 fixedly connected to the inner wall of the tank body 1, and a second annular fixing block 4 fixedly connected to the inner wall of the tank cover 2. A circular hollow plate 5 is disposed between the first annular fixing block 3 and the second annular fixing block 4. A sintered metal filter element 6, a ceramic membrane filter 7, and an activated carbon column 8 are sequentially arranged from top to bottom within the circular hollow plate 5. The sintered metal filter element 6 is used to adsorb large particles in the acetonitrile liquid, the ceramic membrane filter 7 is used to adsorb microparticles in the acetonitrile liquid, and the activated carbon column 8 is used to adsorb… To prevent the presence of polymers, pigments, or trace amounts of moisture in the acetonitrile liquid, multiple water inlets 18 are provided at both the upper and lower ends of the circular hollow plate 5, allowing the acetonitrile liquid to pass through and fall into the inner bottom of the tank body 1. A first annular sealing ring 11 is provided at the upper end of the first annular fixing block 3, and a second annular sealing ring 12 is provided at the lower end of the second annular fixing block 4. The first annular sealing ring 11 and the second annular sealing ring 12 are tightly fitted to the lower and upper ends of the circular hollow plate 5, respectively, to ensure that the acetonitrile liquid can stably pass through the interior of the circular hollow plate 5.

[0021] The device also includes a metering component, which includes a liquid level sensor 9 installed at the bottom of the tank 1. This is existing technology. A controller 10 is provided on the right side of the tank 1. The liquid level sensor 9 is electrically connected to the controller 10. The liquid level sensor 9 can collect the amount of acetonitrile liquid recovered in the tank 1 and transmit the data to the controller 10.

[0022] In this invention, during use, the inlet pipe 17 is first connected to the pipeline for conveying pre-dehydrated acetonitrile liquid. Then, the pre-dehydrated acetonitrile liquid is injected into the tank 1 through the inlet pipe 17. During this process, the acetonitrile liquid passes from top to bottom through the sintered metal filter element 6, the ceramic membrane filter 7, and the activated carbon column 8 inside the circular hollow plate 5. The sintered metal filter element 6 can adsorb and coarsely filter large particles in the acetonitrile liquid, the ceramic membrane filter 7 can further adsorb the microparticles in the acetonitrile liquid, and the activated carbon column 8 can adsorb polymers, pigments, or trace amounts of water that may be present in the acetonitrile liquid. Finally, the filtered acetonitrile liquid falls into the bottom of the tank 1.

[0023] When acetonitrile liquid flows into the bottom of the tank 1, the liquid level sensor 9 at the bottom of the tank 1 can collect the acetonitrile liquid recovery data in the tank 1 in real time and transmit the data to the controller 10 which is electrically connected to the liquid level sensor 9. The controller 10 can accurately determine the amount of anhydrous acetonitrile recovered in the tank 1, thereby ensuring the accuracy of subsequent deep dehydration.

[0024] It is worth mentioning that when maintenance and replacement of the sintered metal filter element 6, ceramic membrane filter 7, and activated carbon column 8 inside the circular hollow plate 5 are required, the connection between the latch 13 and the hook 14 can be released, and then the can lid 2 can be opened to remove the circular hollow plate 5 from the can body 1 for maintenance and replacement. After replacement, the circular hollow plate 5 is placed on the upper end of the first annular fixing block 3, and then the can lid 2 is closed and the latch 13 is controlled to hook the hook 14 to achieve a stable connection between the can lid 2 and the can body 1. At this time, the first annular sealing ring 11 and the second annular sealing ring 12 will fit tightly with the lower and upper ends of the circular hollow plate 5, respectively, thus ensuring that acetonitrile liquid can stably pass through the interior of the circular hollow plate 5. The whole maintenance process is relatively convenient, ensuring the effectiveness of filtration and good practicality.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A metering tank for recovering acetonitrile during anhydrous acetonitrile dehydration, characterized in that, include: A can body (1), wherein a can lid (2) is rotatably provided at the upper end of the can body (1); The filtration mechanism includes a first annular fixing block (3) fixedly connected to the inner wall of the tank (1), a second annular fixing block (4) fixedly connected to the inner wall of the tank cover (2), a circular hollow plate (5) between the first annular fixing block (3) and the second annular fixing block (4), and a sintered metal filter element (6), a ceramic membrane filter (7) and an activated carbon column (8) arranged sequentially from top to bottom in the circular hollow plate (5), and multiple water inlets (18) are opened at the upper and lower ends of the circular hollow plate (5); The metering component includes a liquid level sensor (9) installed at the bottom of the tank (1), and a controller (10) is provided on the right side of the tank (1). The liquid level sensor (9) is electrically connected to the controller (10).

2. The acetonitrile recovery metering tank for anhydrous acetonitrile dehydration according to claim 1, characterized in that, The upper end of the first annular fixing block (3) is provided with a first annular sealing ring (11).

3. The acetonitrile recovery metering tank for anhydrous acetonitrile dehydration according to claim 1, characterized in that, The lower end of the second annular fixing block (4) is provided with a second annular sealing ring (12).

4. The acetonitrile recovery metering tank for anhydrous acetonitrile dehydration according to claim 1, characterized in that, The front side of the can body (1) is provided with a buckle (13), and the front side of the can lid (2) is provided with a hook (14).

5. The acetonitrile recovery metering tank for dehydration of anhydrous acetonitrile according to claim 4, characterized in that, The buckle (13) and hook (14) cooperate, and an observation window (15) is provided on the front side of the tank (1).

6. The acetonitrile recovery metering tank for anhydrous acetonitrile dehydration according to claim 1, characterized in that, A drain pipe (16) is provided on the right side of the tank body (1), and an inlet pipe (17) is provided at the upper end of the tank cover (2).

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