Liquid nitrogen air cooling gasification system equipment for synthesizing fluoroethylene carbonate

Abstract

The utility model discloses liquid nitrogen air cooling gasification system equipment for synthesizing fluoroethylene carbonate, and relates to the technical field of fluoroethylene carbonate synthesis, the liquid nitrogen air cooling gasification system equipment comprises a cooling mechanism, a liquid nitrogen air cooling gasification mechanism is arranged on the left side of the cooling mechanism, and the cooling mechanism comprises a cold air storage box; support rods are fixedly installed on the left side and the right side of the inner wall of the cold air storage box, a liquid storage tank is fixedly installed between the opposite faces of the two support rods, a feeding pipe is fixedly connected to the right side of the top of the liquid storage tank, and the top end of the feeding pipe penetrates to the right side of the top of the cold air storage box. According to the device disclosed by the utility model, the cold air storage box, the liquid storage tank and the liquid nitrogen air cooling gasification mechanism are matched with one another, so that synthesized fluoroethylene carbonate with higher temperature can be injected into the liquid storage tank in the cold air storage box, and air in an inner cavity of the cold air storage box can be quickly cooled through the liquid nitrogen air cooling gasification mechanism; the synthesized fluoroethylene carbonate is rapidly cooled, and the cooling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of synthesizing fluoroethylene carbonate, in particular to liquid nitrogen air-cooling gasification system equipment for synthesizing fluoroethylene carbonate. Background Art

[0002] Fluorinated ethylene carbonate (FEC) can be used as an intermediate for medicines and pesticides, and is primarily used as an important additive for lithium-ion battery electrolytes. It can inhibit the decomposition of some electrolytes, form a high-performance SEI film on the surface of the negative electrode to reduce battery impedance, and significantly increase battery specific capacity and improve battery cycle stability. Fluorinated ethylene carbonate also has a flame retardant effect, thus greatly improving battery safety. Currently, the industrial production of fluoroethylene carbonate mostly uses a direct fluorination substitution method using fluorine gas: a fluorine substitution reaction is directly performed on ethylene carbonate using a mixture of a certain ratio of F2 / inert gas at a certain temperature. The existing technology has the following problems:

[0003] Because existing fluoroethylene carbonate needs to react at high temperatures during synthesis, the temperature of the synthesized fluoroethylene carbonate is still high and cannot be dissipated in time. It needs to wait for it to naturally cool to a lower temperature before it can be normally collected, thereby increasing the cooling time and reducing the production efficiency of the synthetic fluoroethylene carbonate. Utility Model Content

[0004] The utility model provides a liquid nitrogen air-cooling gasification system device for synthesizing fluoroethylene carbonate, so as to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A liquid nitrogen air-cooled gasification system for synthesizing fluoroethylene carbonate comprises a cooling mechanism, wherein a liquid nitrogen air-cooled gasification mechanism is provided on the left side of the cooling mechanism, the cooling mechanism comprises a cold air storage box, support rods are fixedly installed on the left and right sides of the inner wall of the cold air storage box, a liquid storage tank is fixedly installed between the opposite surfaces of the two support rods, a feeding pipe is fixedly connected to the top right side of the liquid storage tank, the top end of the feeding pipe passes through the top right side of the cold air storage box, an adjacent pressure gauge and a pressure relief valve are provided on the left front side of the top of the cold air storage box, a discharge pipe is fixedly connected to the lower front side of the liquid storage tank, the front end of the discharge pipe passes through the front side of the cold air storage box, and an electric control valve is provided on the outer wall of the discharge pipe.

[0007] The liquid nitrogen air-cooled gasification mechanism includes a placement plate, a liquid nitrogen storage tank is provided on the top of the placement plate, a stabilizing ring is fixedly installed on the left side of the top of the placement plate, the inner ring of the stabilizing ring overlaps the outer wall of the liquid nitrogen storage tank, a valve is fixedly installed on the top of the liquid nitrogen storage tank, a nitrogen injector is fixedly installed on the upper left side of the cold gas storage box, the left input end of the nitrogen injector and the right output end of the valve are fixedly connected by a pipeline, and the output end of the nitrogen injector passes through the left side of the inner wall of the cold gas storage box and is fixedly installed with a liquid nitrogen cold gas injection pipe.

[0008] A further improvement of the technical solution of the present utility model is that a sinking groove is provided on the top of the liquid storage tank, a rotating motor is fixedly installed on the bottom of the cold air storage box, the output shaft of the rotating motor passes through the inner cavity of the liquid storage tank and L-shaped rotating rods are fixedly installed on both sides, and a number of stirring rods are evenly fixedly installed on the vertically opposite surfaces of the two L-shaped rotating rods.

[0009] A further improvement of the technical solution of the present utility model is that a threaded hole is provided on the top of the cold air storage box which passes through its inner cavity, a threaded disk is installed on the inner circle thread of the threaded hole, a sealing disk is fixedly installed on the top of the threaded disk, the bottom edge of the sealing disk overlaps with the top of the cold air storage box, a rotating handle is fixedly installed on the top of the sealing disk, and the diameter of the threaded hole is consistent with the sinking groove.

[0010] A further improvement of the technical solution of the present utility model is that a connecting rod is movably installed at the bottom center of the threaded disk, and a receiving round box is fixedly installed at the bottom end of the connecting rod. The outer wall of the receiving round box is clamped with the inner circle of the sinking groove, and after the threaded disk is threadedly connected to the threaded hole, the bottom of the receiving round box overlaps with the bottom of the inner wall of the sinking groove.

[0011] A further improvement of the technical solution of the present utility model is that a water receiving trough is provided at the bottom of the inner wall of the cold air storage box, the diameter of the water receiving trough is larger than the diameter of the liquid storage tank, a conical guide block is fixedly installed at the center of the bottom circle of the inner wall of the water receiving trough, the conical guide block is located directly below the liquid storage tank, and the output shaft of the rotating motor passes through the center of the conical guide block up and down.

[0012] A further improvement of the technical solution of the present utility model is that an L-shaped water outlet pipe is fixedly connected to the left side of the bottom of the cold air storage box, the inner cavity of the L-shaped water outlet pipe passes through the gap between the conical guide block and the water receiving trough, and a water outlet valve is fixedly installed at the left end of the horizontal part of the L-shaped water outlet pipe.

[0013] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0014] The utility model provides a liquid nitrogen air-cooling gasification system for synthesizing fluoroethylene carbonate. By means of the mutual cooperation among a cold air storage box, a liquid storage tank and a liquid nitrogen air-cooling gasification mechanism, the fluoroethylene carbonate with a high temperature after synthesis can be injected into the liquid storage tank in the cold air storage box, and the air in the inner cavity of the cold air storage box is quickly cooled by the liquid nitrogen air-cooling gasification mechanism, thereby quickly completing the cooling treatment of the synthesized fluoroethylene carbonate and improving the cooling efficiency.

[0015] The utility model provides a liquid nitrogen air-cooled gasification system for synthesizing fluoroethylene carbonate. By cooperating with each other among a sinking tank, a rotating motor, an L-shaped rotating rod, and a stirring rod, the surface area of ​​a liquid storage tank is increased, so that the synthetic fluoroethylene carbonate inside the liquid storage tank can be stirred and heat can be more evenly transferred to the outer wall of the liquid storage tank, thereby dissipating heat faster.

[0016] The utility model provides a liquid nitrogen air-cooled gasification system for synthesizing fluoroethylene carbonate. By cooperating with a receiving round box, a water receiving trough, a conical guide block, and an L-shaped water outlet pipe, liquefied water droplets generated in a liquid storage tank after being cooled can be collected in a centralized manner, and the liquefied water droplets can be quickly processed after the synthetic fluoroethylene carbonate is cooled, thereby avoiding contamination of the interior of the cold air storage box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cooling mechanism and liquid nitrogen air-cooling gasification mechanism of the utility model structure;

[0019] Figure 3 This is a cross-sectional schematic diagram of the liquid storage tank structure of the utility model;

[0020] Figure 4 This is a cross-sectional schematic diagram of a cold air storage box of the utility model structure;

[0021] Figure 5 This is a schematic cross-sectional view of the bottom end of the cold air storage box of the utility model structure.

[0022] In the figure: 1. Cooling mechanism; 11. Cold air storage box; 111. Threaded hole; 112. Threaded disk; 113. Sealing disk; 114. Rotating handle; 115. Connecting boom; 116. Round box; 117. Water receiving trough; 1171. Conical guide block; 118. L-shaped water outlet pipe; 1181. Water outlet valve; 12. Support rod; 13. Liquid storage tank; 131. Sinking trough; 132. Rotating motor; 133. L-shaped rotating rod; 134. Stirring rod; 14. Feeding pipe; 15. Pressure gauge; 16. Pressure relief valve; 17. Discharge pipe; 18. Electric control valve; 2. Liquid nitrogen air-cooled gasification mechanism; 21. Placement plate; 22. Stabilizing ring; 23. Liquid nitrogen storage tank; 24. Valve; 25. Nitrogen injector; 26. Liquid nitrogen cold air injection pipe. DETAILED DESCRIPTION

[0023] To make the technical means, creative features, objectives and effects of this utility model easy to understand

[0024] Understand, the utility model is further described below in conjunction with specific implementation methods.

[0025] like Figure 1 、 Figure 2 As shown, the utility model provides a liquid nitrogen air-cooled gasification system for synthesizing fluoroethylene carbonate, comprising a cooling mechanism 1, a liquid nitrogen air-cooled gasification mechanism 2 being provided on the left side of the cooling mechanism 1, the cooling mechanism 1 comprising a cold air storage box 11, bracket rods 12 being fixedly installed on both sides of the inner wall of the cold air storage box 11, a liquid storage tank 13 being fixedly installed between opposite surfaces of the two bracket rods 12, a feeding pipe 14 being fixedly connected to the right side of the top of the liquid storage tank 13, the top of the feeding pipe 14 passing through the right side of the top of the cold air storage box 11, an adjacent pressure gauge 15 and a pressure relief valve 16 being provided on the left front side of the top of the cold air storage box 11, a discharge pipe 17 being fixedly connected to the lower front side of the front side of the liquid storage tank 13, and the discharge pipe 17 The front end of 17 passes through the front side of the cold air storage box 11, and the outer wall of the discharge pipe 17 is provided with an electric control valve 18. The liquid nitrogen air-cooled gasification mechanism 2 includes a placement plate 21. A liquid nitrogen storage tank 23 is provided on the top of the placement plate 21. A stabilizing ring 22 is fixedly installed on the left side of the top of the placement plate 21. The inner ring of the stabilizing ring 22 overlaps the outer wall of the liquid nitrogen storage tank 23. A valve 24 is fixedly installed on the top of the liquid nitrogen storage tank 23. A nitrogen injector 25 is fixedly installed on the upper left side of the cold air storage box 11. The left input end of the nitrogen injector 25 is fixedly connected to the right output end of the valve 24 by a pipeline. The output end of the nitrogen injector 25 passes through the left side of the inner wall of the cold air storage box 11 and is fixedly installed with a liquid nitrogen cold air injection pipe 26;

[0026] During use, the synthesized high-temperature synthetic fluoroethylene carbonate is injected into the inner cavity of the liquid storage tank 13 through the feeding pipe 14, and then the valve 24 is opened and the nitrogen injector 25 is started, so that the liquid nitrogen gas in the liquid nitrogen storage tank 23 is injected into the inner cavity of the cold gas storage box 11 through the liquid nitrogen cold gas injection pipe 26. The volatile characteristics of the liquid nitrogen gas are utilized to volatilize and release the liquid nitrogen gas inside the cold gas storage box 11, and the heat of the synthetic fluoroethylene carbonate derived from the metal liquid storage tank 13 is absorbed by the heat conduction of the gas. The liquid nitrogen gas needs to absorb a large amount of heat when evaporating, so it can quickly reduce the temperature of the liquid storage tank 13, which has the effect of cooling the synthetic fluoroethylene carbonate inside the liquid storage tank 13. After the temperature has been cooled for a certain period of time, the electric control valve 18 can be opened to discharge the cooled synthetic fluoroethylene carbonate in the liquid storage tank 13 through the discharge pipe 17. At the same time, the pressure gauge 15 can be used to observe the air pressure in the cold gas storage box 11. Once the air pressure is too high, the pressure relief valve 16 can be opened for pressure relief.

[0027] like Figure 3 As shown, a sinking groove 131 is provided on the top of the liquid storage tank 13, and a rotating motor 132 is fixedly installed on the bottom of the cold air storage box 11. The output shaft of the rotating motor 132 passes through the inner cavity of the liquid storage tank 13 and is fixedly installed on both sides of the left and right sides. A plurality of stirring rods 134 are evenly fixedly installed on the vertically opposite surfaces of the two L-shaped rotating rods 133;

[0028] At the moment when liquid nitrogen gas is injected into the cold air storage box 11 from the liquid nitrogen cold air injection pipe 26, since the cold air will fall downward, part of the cold air can sink into its inner cavity through the sinking groove 131, thereby cooperating with the liquid nitrogen gas in the inner cavity of the cold air storage box 11 to perform more comprehensive contact cooling on the liquid storage tank 13. At the same time, starting the rotating motor 132 can drive the two L-shaped rotating rods 133 in the inner cavity of the liquid storage tank 13 to rotate, and cooperate with several stirring rods 134 at its vertical position to evenly stir the synthetic fluoroethylene carbonate in the liquid storage tank 13, so that the synthetic fluoroethylene carbonate can better contact with the cold air in the cold air storage box 11 through conduction through the outer wall of the liquid storage tank 13, further improving the cooling efficiency.

[0029] like Figure 4 、 Figure 5As shown, a threaded hole 111 is provided on the top of the cold air storage box 11, which passes through its inner cavity. A threaded disk 112 is installed on the inner circle of the threaded hole 111. A sealing disk 113 is fixedly installed on the top of the threaded disk 112. The bottom edge of the sealing disk 113 overlaps with the top of the cold air storage box 11. A rotating handle 114 is fixedly installed on the top of the sealing disk 113. The diameter of the threaded hole 111 is consistent with the sinking groove 131. A connecting hanger 115 is movably installed at the center of the bottom circle of the threaded disk 112. A receiving round box 116 is fixedly installed on the bottom end of the connecting hanger 115. The outer wall of the receiving round box 116 is clamped with the inner circle of the sinking groove 131, and the threaded disk 112 is threadedly connected to the threaded hole 111 to receive the round box. The bottom of 116 overlaps with the bottom of the inner wall of the sinking tank 131, and a water receiving groove 117 is opened at the bottom of the inner wall of the cold air storage box 11. The diameter of the water receiving groove 117 is larger than the diameter of the liquid storage tank 13. A conical guide block 1171 is fixedly installed at the center of the bottom circle of the inner wall of the water receiving groove 117. The conical guide block 1171 is located directly below the liquid storage tank 13. The output shaft of the rotating motor 132 passes through the center of the conical guide block 1171 from top to bottom. An L-shaped water outlet pipe 118 is fixedly connected to the left side of the bottom of the cold air storage box 11. The inner cavity of the L-shaped water outlet pipe 118 passes through the gap between the conical guide block 1171 and the water receiving groove 117. A water outlet valve 1181 is fixedly installed at the left end of the horizontal part of the L-shaped water outlet pipe 118;

[0030] When the inner wall of the sinking tank 131 is exposed to cold air, the synthetic fluoroethylene carbonate in the liquid storage tank 13 is hot, so liquefied water droplets will form on the inner wall of the sinking tank 131, and the water droplets will fall into the receiving round box 116 at the bottom of the sinking tank 131 under the action of gravity for collection. When the synthetic fluoroethylene carbonate is processed, the integral sealing disk 113 can be rotated by rotating the handle 114, thereby driving the threaded disk 112 to rotate and rotate it upward from the threaded hole 111, and then After that, the connecting rod 115 can be directly used to pull out the receiving round box 116 to clean the liquefied water. The liquefied water droplets produced on the outer wall of the liquid storage tank 13 with a larger surface area will fall into the water receiving trough 117 and be guided by the inclined surface of the conical guide block 1171 to flow into the gap between the conical guide block 1171 and the water receiving trough 117. The collected liquefied water can be discharged at any time through the horizontal part of the L-shaped outlet pipe 118 by opening the outlet valve 1181.

[0031] The following is a detailed description of the working principle of the liquid nitrogen air-cooled gasification system equipment for synthesizing fluoroethylene carbonate.

[0032] like Figure 1-5As shown, when in use, the synthetic fluoroethylene carbonate with a higher temperature after synthesis is injected into the inner cavity of the liquid storage tank 13 through the feeding pipe 14, and then the valve 24 is opened and the nitrogen injector 25 is started, so that the liquid nitrogen gas in the liquid nitrogen storage tank 23 is injected into the inner cavity of the cold air storage box 11 through the liquid nitrogen cold air injection pipe 26. The volatile characteristics of the liquid nitrogen gas are utilized to volatilize and release the liquid nitrogen gas inside the cold air storage box 11, and the heat of the synthetic fluoroethylene carbonate derived from the metal liquid storage tank 13 is absorbed by the heat conduction of the gas. The liquid nitrogen gas needs to absorb a large amount of heat when evaporating, so it can quickly reduce the temperature of the liquid storage tank 13, thereby playing a role in the internal temperature of the liquid storage tank 13. The cooling effect of synthetic fluoroethylene carbonate is as follows: after cooling for a certain period of time, the electric control valve 18 can be opened to discharge the cooled synthetic fluoroethylene carbonate in the liquid storage tank 13 through the discharge pipe 17. At the same time, the pressure in the cold storage box 11 can be observed by the pressure gauge 15. Once the pressure is too high, the pressure can be released by opening the pressure relief valve 16. At the moment when liquid nitrogen gas is injected into the cold storage box 11 from the liquid nitrogen cold gas injection pipe 26, the cold air will fall downward, so part of the cold air can sink into its inner cavity through the sinking tank 131, thereby cooperating with the liquid nitrogen gas in the inner cavity of the cold storage box 11 to perform more comprehensive contact cooling on the liquid storage tank 13, and at the same time, the rotating motor 132 is started. The two L-shaped rotating rods 133 in the inner cavity of the liquid storage tank 13 can be driven to rotate, and the several stirring rods 134 at the vertical position can be used to evenly stir the synthetic fluoroethylene carbonate in the liquid storage tank 13, so that the synthetic fluoroethylene carbonate can be better contacted with the cold air in the cold air storage box 11 through the conduction of the outer wall of the liquid storage tank 13, further improving the cooling efficiency. When the inner wall of the sinking tank 131 encounters cold air, because the synthetic fluoroethylene carbonate in the liquid storage tank 13 is hot, liquefied water droplets will form on the inner wall of the sinking tank 131, and the water droplets will fall under the action of gravity to the containing round box 116 at the bottom of the sinking tank 131 for collection. When the synthetic fluoroethylene carbonate is processed, When replacing ethylene carbonate, the rotating handle 114 can be used to rotate the integral sealing disk 113, thereby driving the threaded disk 112 to rotate, allowing it to be rotated upward and removed from the threaded hole 111, and then the connecting hanger 115 can be directly used to pull out the receiving round box 116 to clean the liquefied water. The liquefied water droplets produced on the outer wall of the liquid storage tank 13 with a larger surface area will fall into the water receiving trough 117 and use the inclined surface of the conical guide block 1171 to guide the water into the gap between the conical guide block 1171 and the water receiving trough 117. The collected liquefied water can be discharged at any time through the horizontal part of the L-shaped outlet pipe 118 by opening the outlet valve 1181.

[0033] While the present invention has been generally described above, it is readily apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A liquid nitrogen air-cooled gasification system for synthesizing fluoroethylene carbonate, comprising a cooling mechanism (1), characterized in that: A liquid nitrogen air-cooled gasification mechanism (2) is provided on the left side of the cooling mechanism (1), and the cooling mechanism (1) includes a cold air storage box (11), and support rods (12) are fixedly installed on the left and right sides of the inner wall of the cold air storage box (11), and a liquid storage tank (13) is fixedly installed between the opposite surfaces of the two support rods (12), and a feeding pipe (14) is fixedly connected to the right side of the top of the liquid storage tank (13), and the top end of the feeding pipe (14) passes through the right side of the top of the cold air storage box (11), and an adjacent pressure gauge (15) and a pressure relief valve (16) are provided on the left front side of the top of the cold air storage box (11), and a discharge pipe (17) is fixedly connected to the lower front side of the front side of the liquid storage tank (13), and the front end of the discharge pipe (17) passes through the front side of the cold air storage box (11), and the outer wall of the discharge pipe (17) is provided with an electric control valve (18); The liquid nitrogen air-cooled gasification mechanism (2) includes a placement plate (21), a liquid nitrogen storage tank (23) is provided on the top of the placement plate (21), a stabilizing ring (22) is fixedly installed on the left side of the top of the placement plate (21), the inner ring of the stabilizing ring (22) overlaps the outer wall of the liquid nitrogen storage tank (23), a valve (24) is fixedly installed on the top of the liquid nitrogen storage tank (23), a nitrogen injector (25) is fixedly installed on the upper left side of the cold gas storage box (11), the left input end of the nitrogen injector (25) and the right output end of the valve (24) are fixedly connected by a pipeline, and the output end of the nitrogen injector (25) passes through the left side of the inner wall of the cold gas storage box (11) and is fixedly installed with a liquid nitrogen cold gas injection pipe (26).

2. The liquid nitrogen air-cooled gasification system for synthesizing fluoroethylene carbonate according to claim 1, characterized in that: A sinking groove (131) is provided on the top of the liquid storage tank (13), and a rotating motor (132) is fixedly installed on the bottom of the cold air storage box (11). The output shaft of the rotating motor (132) passes through the inner cavity of the liquid storage tank (13) and is fixedly installed with L-shaped rotating rods (133) on both sides. A plurality of stirring rods (134) are evenly fixedly installed on the vertically opposite surfaces of the two L-shaped rotating rods (133).

3. The liquid nitrogen air-cooled gasification system for synthesizing fluoroethylene carbonate according to claim 2, characterized in that: The top of the cold air storage box (11) is provided with a threaded hole (111) passing through its inner cavity, the inner ring of the threaded hole (111) is threadedly mounted with a threaded disk (112), the top of the threaded disk (112) is fixedly mounted with a sealing disk (113), the bottom edge of the sealing disk (113) overlaps the top of the cold air storage box (11), the top of the sealing disk (113) is fixedly mounted with a rotating handle (114), and the diameter of the threaded hole (111) is consistent with that of the sinking groove (131).

4. The liquid nitrogen air-cooled gasification system for synthesizing fluoroethylene carbonate according to claim 3, characterized in that: A connecting rod (115) is movably installed at the center of the bottom circle of the threaded disk (112), and a receiving round box (116) is fixedly installed at the bottom end of the connecting rod (115). The outer wall of the receiving round box (116) is clamped with the inner circle of the sinking groove (131), and after the threaded disk (112) is threadedly connected to the threaded hole (111), the bottom of the receiving round box (116) overlaps with the bottom of the inner wall of the sinking groove (131).

5. The liquid nitrogen air-cooled gasification system for synthesizing fluoroethylene carbonate according to claim 2, characterized in that: A water receiving groove (117) is provided at the bottom of the inner wall of the cold air storage box (11), the diameter of the water receiving groove (117) is larger than the diameter of the liquid storage tank (13), and a conical guide block (1171) is fixedly installed at the center of the bottom circle of the inner wall of the water receiving groove (117), the conical guide block (1171) is located directly below the liquid storage tank (13), and the output shaft of the rotating motor (132) passes through the center of the conical guide block (1171) from top to bottom.

6. The liquid nitrogen air-cooled gasification system for synthesizing fluoroethylene carbonate according to claim 5, characterized in that: An L-shaped water outlet pipe (118) is fixedly connected to the left side of the bottom of the cold air storage box (11), and the inner cavity of the L-shaped water outlet pipe (118) passes through the gap between the conical guide block (1171) and the water receiving trough (117). A water outlet valve (1181) is fixedly installed at the left end of the horizontal part of the L-shaped water outlet pipe (118).

Images