Device for purifying fluoroethylene carbonate

Abstract

The utility model discloses a purification device for fluoroethylene carbonate, and relates to the technical field of fluoroethylene carbonate processing. The fluoroethylene carbonate purification device comprises a distillation kettle, wherein a filtering mechanism for filtering and separating fluoroethylene carbonate is fixedly mounted on one side of the top of the distillation kettle. Through the high adsorption effect of the nano-porous plate, particles and impurities in fluoroethylene carbonate liquid can be conveniently adsorbed and separated, the constant-speed motor is powered on and operates to drive the baffle to rotate, and the impurities and the particles adsorbed on the surface of the nano-porous plate can be pushed into the pipe fitting through the rotating baffle. The collected impurities and particles are conveyed into the storage box through the pipe fitting to be stored and collected, the separated fluoroethylene carbonate liquid is conveyed into the distillation still through the conveying pipe to be purified, and the purity of fluoroethylene carbonate is remarkably improved through matched use of the nano-porous plate and the storage box.

Description

Technical Field

[0001] The utility model relates to the technical field of fluoroethylene carbonate processing, in particular to a fluoroethylene carbonate purification device. Background Art

[0002] Fluoroethylene carbonate, also known as FEC, is an important additive to lithium-ion battery electrolytes. It can form a SEI film with better performance, improve the low-temperature performance of the electrolyte and the cycle life of the battery. It can also be used as a solvent and catalyst, a coating and plastic additive, a transparent thermal insulation material, etc. When processing fluoroethylene carbonate, a purification device is required to purify the fluoroethylene carbonate liquid.

[0003] When processing fluoroethylene carbonate, a purification device is required. Among them, the "Falling Film Evaporator for Fluoroethylene Carbonate Purification Device" disclosed in the publication number "CN216023203U" has solved the problem that the existing liquid distributor is generally fixedly connected to the tank body. When the channel in the liquid distributor is blocked, it is generally inspected and repaired directly in the tank body. The internal structure of the tank body is complex, which not only affects the operator's maintenance vision, but also makes the operation inconvenient.

[0004] However, there are still many defects in the actual use of purification devices with similar structures. For example, the devices in the prior art are not convenient for separating impurities and particles contained in the fluoroethylene carbonate liquid, and cannot create better conditions for subsequent distillation purification, which reduces the quality of subsequent purification of fluoroethylene carbonate, narrows the scope of application of the device, and is not convenient for the promotion and use of the device. Therefore, a purification device for fluoroethylene carbonate is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a device for purifying fluoroethylene carbonate to solve the above problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a purification device for fluoroethylene carbonate, comprising a distillation kettle, a filtering mechanism for filtering and separating fluoroethylene carbonate fixedly mounted on one side of the top of the distillation kettle, a cooling tower fixedly mounted on one side of the distillation kettle, and a safety protection mechanism fixedly mounted on the bottom of the cooling tower;

[0007] The filtering mechanism includes a mounting frame, a fixed box fixedly mounted inside the mounting frame, a nanoporous plate fixedly mounted inside the fixed box, a constant speed motor fixedly mounted on the top of the fixed box, a baffle fixedly mounted on the output end of the constant speed motor, a pipe fixedly mounted on one side of the bottom of the fixed box, a storage box fixedly mounted on the bottom end of the pipe, a delivery pipe fixedly mounted on the other side of the bottom of the fixed box, and the bottom end of the delivery pipe fixedly connected to the top of the distillation kettle;

[0008] The safety protection mechanism comprises a docking seat, and an airbag is fixedly installed inside the docking seat.

[0009] Preferably, support legs are fixedly installed on the bottom of the distillation kettle, and a base plate is fixedly installed on the bottom of the support legs.

[0010] Preferably, a coiled cooling pipe is fixedly installed inside the cooling tower, and the top of the cooling tower is fixedly connected to the top of the distillation kettle through a pipeline.

[0011] Preferably, the top of the docking seat is fixedly connected to the bottom of the cooling tower, a squeeze ball extending out of the docking seat is fixedly installed on one side of the airbag, and an air release valve tube extending out of the docking seat is fixedly installed on the other side of the airbag.

[0012] Preferably, a fixing frame is fixedly installed on the outside of the cooling tower, and a foot pad is fixedly installed on the bottom of the fixing frame.

[0013] Preferably, a fixed block is fixedly installed on the top of the front of the distillation kettle, and a controller is fixedly installed on the front of the fixed block.

[0014] Beneficial effects

[0015] The utility model provides a device for purifying fluoroethylene carbonate. Compared with the prior art, the device has the following advantages:

[0016] 1. After connecting the fixed box with the external conveying equipment, the fluoroethylene carbonate liquid is transported to the inside of the fixed box, and then the high adsorption effect of the nanoporous plate can facilitate the adsorption and separation of particles and impurities in the fluoroethylene carbonate liquid, and the baffle is driven to rotate by the uniform speed motor. The rotating baffle can push the impurities and particles adsorbed on the surface of the nanoporous plate into the inside of the pipe, and the collected impurities and particles are transported to the storage box through the pipe for storage and collection, so that subsequent operators can collect and process the impurities collected in the storage box in a unified manner. The separated fluoroethylene carbonate liquid is then transported to the inside of the distillation kettle through the conveying pipe for purification. The nanoporous plate and the storage box are used in conjunction to realize the function of pre-treatment of the fluoroethylene carbonate liquid before purification, thereby improving the quality of the subsequent purification of fluoroethylene carbonate. By optimizing the pretreatment and distillation purification processes, the purity of fluoroethylene carbonate is significantly improved, meeting the needs of high-requirement applications such as lithium battery electrolyte.

[0017] 2. After the docking seat is connected to the external storage device, the operator manually presses the squeezing ball to generate suction to absorb the external air and transport the air to the inside of the airbag. The air inside the airbag can cause the airbag to expand in volume, thereby performing a fitting and sealing operation on the connection with the external storage device. When the storage device needs to be replaced, the operator can rotate the air release valve tube to discharge the air inside the airbag, thereby releasing the sealing state of the external storage device. The use of the airbag and the docking seat can improve the safety of the device, avoid the problem of flammable and volatile fluoroethylene carbonate leaking into the working environment and causing physical injury to the operator, and ensure the safe and reliable use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a partial schematic diagram of the filtering mechanism of the present utility model;

[0020] Figure 3 This is a schematic diagram of the local structure of the cooling tower of the present utility model;

[0021] Figure 4 It is a schematic diagram of the partial structure of the safety protection mechanism of the utility model.

[0022] In the figure: 1. Distillation kettle; 101. Support legs; 102. Bottom plate; 2. Filter mechanism; 201. Mounting frame; 202. Fixing box; 203. Nanoporous plate; 204. Constant speed motor; 205. Baffle; 206. Storage box; 207. Delivery pipe; 3. Cooling tower; 301. Cooling exhaust pipe; 4. Safety protection mechanism; 401. Docking seat; 402. Air bag; 403. Squeeze ball; 404. Air release valve pipe; 5. Fixing frame; 6. Controller. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figures 1-4 , this utility model provides two technical solutions:

[0025] First embodiment: A purification device for fluoroethylene carbonate, comprising a distillation kettle 1, a filtering mechanism 2 for filtering and separating fluoroethylene carbonate fixedly mounted on one side of the top of the distillation kettle 1, a cooling tower 3 fixedly mounted on one side of the distillation kettle 1, and a safety protection mechanism 4 fixedly mounted on the bottom of the cooling tower 3;

[0026] The filtering mechanism 2 includes a mounting frame 201, a fixed box 202 is fixedly installed inside the mounting frame 201, a nanoporous plate 203 is fixedly installed inside the fixed box 202, a constant speed motor 204 is fixedly installed on the top of the fixed box 202, a baffle 205 is fixedly installed on the output end of the constant speed motor 204, a pipe is fixedly installed on one side of the bottom of the fixed box 202, and a storage box 206 is fixedly installed on the bottom end of the pipe, and a delivery pipe 207 is fixedly installed on the other side of the bottom of the fixed box 202, and the bottom end of the delivery pipe 207 is fixedly connected to the top of the distillation kettle 1;

[0027] The safety protection mechanism 4 includes a docking seat 401, an air bag 402 is fixedly installed inside the docking seat 401, a support leg 101 is fixedly installed at the bottom of the distillation kettle 1, and a base plate 102 is fixedly installed at the bottom of the support leg 101, a coiled cooling pipe 301 is fixedly installed inside the cooling tower 3, and the top of the cooling tower 3 is fixedly connected to the top of the distillation kettle 1 through a pipeline;

[0028] A fixing frame 5 is fixedly installed on the outside of the cooling tower 3, and a foot pad is fixedly installed on the bottom of the fixing frame 5. A fixing block is fixedly installed on the top of the front of the distillation kettle 1, and a controller 6 is fixedly installed on the front of the fixing block.

[0029] After the fixed box 202 is connected to an external conveying device, the fluoroethylene carbonate liquid is transported into the fixed box 202. The high adsorption effect of the nanoporous plate 203 facilitates the adsorption and separation of particles and impurities in the fluoroethylene carbonate liquid. The baffle 205 is driven by the constant speed motor 204 to rotate. The rotating baffle 205 pushes the impurities and particles adsorbed on the surface of the nanoporous plate 203 into the interior of the pipe.

[0030] The collected impurities and particles are transported to the storage box 206 for storage and collection through the pipe fittings, which facilitates the subsequent operator to uniformly collect and process the impurities collected in the storage box 206. The separated fluoroethylene carbonate liquid is then transported to the distillation kettle 1 through the delivery pipe 207 for purification. The nanoporous plate 203 and the storage box 206 are used in conjunction to achieve the function of pre-treating the fluoroethylene carbonate liquid before purification.

[0031] The distillation kettle 1 and the cooling tower 3 are used in conjunction with each other to effectively separate and remove impurities in the fluoroethylene carbonate, thereby improving its purity. The support legs 101 and the base plate 102 are used in conjunction with each other to ensure the stability of the installation position of the distillation kettle 1. The cooling pipe 301 and the cooling tower 3 are used in conjunction with each other to facilitate the cooling and collection of the fluoroethylene carbonate raw material discharged from the distillation kettle 1, thereby achieving the function of purifying the fluoroethylene carbonate.

[0032] The fixing bracket 5 and the foot pad can be used together to fix the installation position of the cooling tower 3, thereby ensuring the stability of the installation position of the cooling tower 3 and preventing the cooling tower 3 from falling off the installation position due to external impact;

[0033] The controller 6 is electrically connected to the internal electrical equipment of the device through a wire, so that the operator can intelligently control the power-on operation of the internal electrical equipment of the device through the controller 6. The operator can understand the operating status of the internal electrical equipment of the device through the display screen, thereby facilitating the control of the power-on operation status of the internal electrical equipment of the device according to usage requirements, thereby increasing the intelligent effect of the device.

[0034] The second embodiment is mainly different from the first embodiment in that the top of the docking seat 401 is fixedly connected to the bottom of the cooling tower 3, a squeezing ball 403 extending from the interior of the docking seat 401 is fixedly installed on one side of the airbag 402, and a deflation valve tube 404 extending from the interior of the docking seat 401 is fixedly installed on the other side of the airbag 402.

[0035] After the docking seat 401 is connected to the external storage device, the operator manually presses the squeezing ball 403 to generate suction to absorb the external air and transport the air to the inside of the airbag 402. The air inside the airbag 402 can cause the airbag 402 to expand in volume, thereby performing a fitting and sealing operation on the connection with the external storage device. When the storage device needs to be replaced, the operator can rotate the air release valve tube 404 to discharge the air inside the airbag 402, thereby releasing the sealing state of the external storage device. The use of the airbag 402 in conjunction with the docking seat 401 can achieve the function of improving the safety effect of the use of the device.

[0036] At the same time, the contents not described in detail in this specification belong to the existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A purification device for fluoroethylene carbonate, comprising a still (1), characterized in that: A filtering mechanism (2) for filtering and separating fluoroethylene carbonate is fixedly installed on one side of the top of the distillation kettle (1), a cooling tower (3) is fixedly installed on one side of the distillation kettle (1), and a safety protection mechanism (4) is fixedly installed on the bottom of the cooling tower (3); The filtering mechanism (2) comprises a mounting frame (201), a fixed box (202) is fixedly mounted inside the mounting frame (201), a nanoporous plate (203) is fixedly mounted inside the fixed box (202), a uniform speed motor (204) is fixedly mounted on the top of the fixed box (202), a baffle (205) is fixedly mounted on the output end of the uniform speed motor (204), a pipe is fixedly mounted on one side of the bottom of the fixed box (202), and a storage box (206) is fixedly mounted on the bottom end of the pipe, a delivery pipe (207) is fixedly mounted on the other side of the bottom of the fixed box (202), and the bottom end of the delivery pipe (207) is fixedly connected to the top of the distillation kettle (1); The safety protection mechanism (4) comprises a docking seat (401), and an air bag (402) is fixedly installed inside the docking seat (401).

2. A purification device for fluoroethylene carbonate according to claim 1, characterized in that: A supporting foot (101) is fixedly installed at the bottom of the distillation kettle (1), and a bottom plate (102) is fixedly installed at the bottom of the supporting foot (101).

3. A purification device for fluoroethylene carbonate according to claim 1, characterized in that: A coiled cooling pipe (301) is fixedly installed inside the cooling tower (3), and the top of the cooling tower (3) is fixedly connected to the top of the distillation kettle (1) through a pipeline.

4. A purification device for fluoroethylene carbonate according to claim 1, characterized in that: The top of the docking seat (401) is fixedly connected to the bottom of the cooling tower (3); a squeezing ball (403) extending from the interior of the docking seat (401) is fixedly installed on one side of the air bag (402); and a deflation valve tube (404) extending from the interior of the docking seat (401) is fixedly installed on the other side of the air bag (402).

5. A purification device for fluoroethylene carbonate according to claim 1, characterized in that: A fixing frame (5) is fixedly installed on the outside of the cooling tower (3), and a foot pad is fixedly installed on the bottom of the fixing frame (5).

6. A purification device for fluoroethylene carbonate according to claim 1, characterized in that: A fixed block is fixedly installed on the top of the front of the distillation kettle (1), and a controller (6) is fixedly installed on the front of the fixed block.

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