A kind of dehydrating kettle for fluorobenzene production

Abstract

This invention discloses a dehydration reactor for fluorobenzene production, relating to the field of chemical production technology. The dehydration reactor for fluorobenzene production includes a dehydration reactor with a support fixedly connected to its outer wall. A sealing plate is hinged to the lower side of the dehydration reactor. An observation window, an air inlet pipe, an exhaust pipe, and a feed pipe are fixedly connected to the side walls of the dehydration reactor, respectively. The observation window is located at the front of the dehydration reactor, the air inlet pipe is located on the middle side wall of the dehydration reactor, and the exhaust pipe and feed pipe are located above the air inlet pipe. The observation window, air inlet pipe, exhaust pipe, and feed pipe all connect the inside and outside of the dehydration reactor. A motor is fixedly connected to the upper side of the dehydration reactor, and a rotating rod is fixedly connected to the lower output end of the motor. This dehydration reactor for fluorobenzene production, by incorporating a feed pipe and a vertically movable scraper, achieves the purpose of scraping downwards the solid dehydrating agent adhering to the inner wall of the dehydration reactor, reducing its residue on the inner wall.

Description

Technical Field

[0001] This invention relates to the field of chemical production technology, specifically to a dehydration reactor for fluorobenzene production. Background Technology

[0002] Fluorobenzene is an important organic solvent in industry with a wide range of applications. In recent years, with continuous advancements in science and technology, the uses of fluorobenzene have been continuously developed. Currently, high-purity non-aqueous fluorobenzene has been successfully applied in lithium-ion battery electrolytes. Compared to conventional carbonate-containing electrolytes, adding a larger content of fluorobenzene can improve battery performance, showing significant advantages in low-temperature performance, battery life, and high-temperature discharge capability. Fluorobenzene may introduce moisture during production, transportation, and storage. Excessive moisture content can affect the water content of lithium-ion battery electrolytes, negatively impacting the battery's electrochemical performance. Typically, the moisture content in the electrolyte is controlled below 30 ppm or even lower. With traditional production processes, the high moisture content in fluorobenzene fails to meet the requirements for high-quality battery-grade products.

[0003] Generally, a dehydrating agent that is insoluble in fluorobenzene but can absorb moisture is added to fluorobenzene. This dehydrating agent can be aluminosilicate oxide, activated carbon, silica gel, barium sulfate, or activated alumina. The amount of dehydrating agent added is 1-10% of the weight of fluorobenzene. This method removes water from the fluorobenzene. However, after some solid dehydrating agent is added and stirred inside the fluorobenzene, the eddy current carries the solid dehydrating agent to the liquid surface, where it adheres to the inner wall of the dehydration vessel. This reduces the utilization rate of the dehydrating agent, thus slowing down the dehydration efficiency. Furthermore, after the dehydration is completed and the material is discharged, the dry material adhering to the inner wall of the dehydration vessel is difficult to remove. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a dehydration reactor for fluorobenzene production, which aims to reduce the amount of dehydrating agent adhering to the inner wall of the dehydration reactor during the dehydration of fluorobenzene.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dehydration kettle for fluorobenzene production, comprising a dehydration kettle, a bracket fixedly connected to the outer wall of the dehydration kettle, a sealing plate hinged to the lower side of the dehydration kettle, an observation window, an air inlet pipe, an exhaust pipe, and a feed pipe fixedly connected to the side walls of the dehydration kettle respectively, the observation window being located at the front of the dehydration kettle, the air inlet pipe being located at the middle side wall of the dehydration kettle, and the exhaust pipe and feed pipe being located above the air inlet pipe, the observation window, air inlet pipe, exhaust pipe, and feed pipe all connecting the inside and outside of the dehydration kettle, a motor fixedly connected to the upper side of the dehydration kettle, a rotating rod fixedly connected to the lower output end of the motor, the rotating rod penetrating the dehydration kettle and extending into the interior of the dehydration kettle, the outer wall of the rotating rod being rotatably connected to the upper inner wall of the dehydration kettle via a bearing, a stirring blade fixedly connected to the outer wall of the rotating rod, and a scraping mechanism provided on the upper side of the rotating rod;

[0006] The scraping mechanism includes:

[0007] The fixed assembly includes a second connecting rod, a slip ring, a scraper, and a vibration mechanism. The slip ring is located on the outside of the rotating rod and can slide on the outer wall of the rotating rod. The scraper can move up and down with the slip ring. One end of the second connecting rod is hinged to the outer wall of the slip ring by a torsion spring, and the second connecting rod can deflect on the slip ring.

[0008] The vibration mechanism includes a threaded ring and a counterweight, which can move up and down on the second connecting rod and rotate at the same time.

[0009] A cleaning mechanism is also provided on the upper side of the dehydration kettle.

[0010] Preferably, the fixing assembly includes a fixing ring, the inner wall of which is fixedly connected to the upper part of the outer wall of the rotating rod. A first connecting rod is hinged to the outer wall of the fixing ring, and a limiting sleeve is hinged to the lower end of the first connecting rod. The inner wall of the limiting sleeve is slidably connected to the outer wall of a second connecting rod. The lower end of the second connecting rod is hinged to the outer wall of a slip ring, and the inner wall of the slip ring is slidably connected to the outer wall of the rotating rod. A connecting frame is fixedly connected to the upper surface of the slip ring, and a scraper is fixedly connected to the upper end of the connecting frame. The outer wall of the scraper contacts the inner side wall of the dehydration vessel.

[0011] Preferably, the vibration mechanism further includes a bottom ring, the inner wall of which is fixedly connected to the outer wall of the second connecting rod, the outer wall of the second connecting rod having a threaded structure on the upper side of the bottom ring, the inner wall of the threaded ring being threadedly connected to the outer wall of the second connecting rod, the lower side of the threaded ring contacting the upper surface of the bottom ring, the outer wall of the threaded ring being fixedly connected to the outer wall of the counterweight, and the vibration mechanism further includes a limiting ball, the outer wall of which is fixedly connected to the upper end of the second connecting rod.

[0012] Preferably, the cleaning mechanism includes a water supply ring, the lower surface of which is fixedly connected to the upper side of the dehydration vessel. The inner wall of the water supply ring is rotatably connected to the outer wall of the rotating rod via a bearing. A connecting channel is provided on the upper inner side of the rotating rod. A water inlet pipe is fixedly connected to the side wall of the water supply ring, which connects the inside of the water supply ring to the outside of the water supply ring. The end of the water inlet pipe located on the outside of the water supply ring is sealed with a cap. A connecting hole is also provided on the side wall of the rotating rod, which connects the inside of the rotating rod to the inside of the water supply ring. The cleaning mechanism also includes a one-way valve, which is located in the middle of the side wall of the rotating rod. The output end and input end of the one-way valve connect the outside of the rotating rod to the inside of the rotating rod, respectively.

[0013] Preferably, the scraper is a ring-shaped rubber structure, the sum of the masses of the limiting ball and the second connecting rod is greater than the mass of the scraper, and the length of the second connecting rod is less than the radius of the scraper.

[0014] Preferably, there are four one-way valves, which are arranged in a circle with the middle of the rotating rod as the center, and the four one-way valves are located on the upper part of the fixed ring.

[0015] This invention provides a dehydration reactor for fluorobenzene production. It has the following beneficial effects:

[0016] 1. This dehydration kettle for fluorobenzene production achieves the purpose of removing water from the inside of fluorobenzene by setting up a motor, stirring blades and other structures.

[0017] 2. The dehydration kettle for fluorobenzene production, by setting up a feed pipe and a scraper that can move up and down, achieves the purpose of scraping down the solid dehydrating agent adhering to the inner wall of the dehydration kettle, thereby reducing the residue on the inner wall of the dehydration kettle.

[0018] 3. The dehydration kettle for fluorobenzene production is equipped with a vibration mechanism to prevent the scraped-off solid dehydrating agent from adhering to the outer wall of the scraper, thus avoiding the loss of solid dehydrating agent.

[0019] 4. The dehydration kettle for fluorobenzene production is equipped with a cleaning mechanism, which allows for convenient cleaning of the inner wall of the dehydration kettle after use. In addition, with the up and down movement of the scraper, the inner wall of the dehydration kettle can be rinsed and scraped at the same time. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention;

[0023] Figure 4 This is an enlarged structural schematic diagram of the scraping mechanism of the present invention;

[0024] Figure 5 For the present invention Figure 3 A magnified structural diagram of A in the middle;

[0025] Figure 6 For the present invention Figure 3 A magnified structural diagram of B in the diagram.

[0026] In the diagram: 1. Dehydration vessel, 2. Support, 3. Sealing plate, 4. Observation tube, 5. Air inlet pipe, 6. Exhaust pipe, 7. Feed pipe, 8. Motor, 9. Rotary rod, 10. Stirring blade, 11. Scraping mechanism, 12. Cleaning mechanism, 101. Fixing ring, 102. First connecting rod, 103. Limiting sleeve, 104. Second connecting rod, 105. Slip ring, 106. Connecting frame, 107. Scraper, 108. Vibration mechanism, 801. Bottom ring, 802. Threaded ring, 803. Counterweight, 804. Limiting ball, 201. Water supply ring, 202. Water inlet pipe, 203. Connecting hole, 204. One-way valve. Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0029] Please see Figure 1-6 This invention provides a technical solution: a dehydration kettle for fluorobenzene production, including a dehydration kettle 1, a support 2 fixedly connected to the outer wall of the dehydration kettle 1, a sealing plate 3 hinged to the lower side of the dehydration kettle 1, and observation windows 4, air inlet pipes 5, exhaust pipes 6, and feed pipes 7 fixedly connected to the side walls of the dehydration kettle 1 respectively. The observation window 4 is located on the front side of the dehydration kettle 1, the air inlet pipe 5 is located on the middle side wall of the dehydration kettle 1, and the exhaust pipes 6 and feed pipes 7 are located above the air inlet pipe 5. The observation window 4, air inlet pipe 5, exhaust pipe 6, and feed pipe 7 all connect the inside and outside of the dehydration kettle 1. A motor 8 is fixedly connected to the upper side of the dehydration kettle 1, and a rotating rod 9 is fixedly connected to the lower output end of the motor 8. The rotating rod 9 passes through the dehydration kettle 1 and extends into the interior of the dehydration kettle 1. The outer wall of the rotating rod 9 is rotatably connected to the upper inner wall of the dehydration kettle 1 through a bearing. A stirring blade 10 is fixedly connected to the outer wall of the rotating rod 9, and a scraping mechanism 11 is provided on the upper side of the rotating rod 9.

[0030] The scraping mechanism 11 includes:

[0031] The fixed assembly includes a second connecting rod 104, a slip ring 105, a scraper 107, and a vibration mechanism 108. The slip ring 105 is located on the outside of the rotating rod 9 and can slide on the outer wall of the rotating rod 9. The scraper 107 can move up and down with the slip ring 105. One end of the second connecting rod 104 is hinged to the outer wall of the slip ring 105 by a torsion spring. The second connecting rod 104 can deflect on the slip ring 105.

[0032] The vibration mechanism 108 includes a threaded ring 802 and a counterweight 803. The threaded ring 802 and the counterweight 803 can move up and down on the second connecting rod 104 and rotate at the same time.

[0033] A cleaning mechanism 12 is also provided on the upper side of the dehydration vessel 1.

[0034] The fixing assembly includes a fixing ring 101. The inner wall of the fixing ring 101 is fixedly connected to the upper part of the outer wall of the rotating rod 9. A first connecting rod 102 is hinged to the outer wall of the fixing ring 101. A limiting sleeve 103 is hinged to the lower end of the first connecting rod 102. The inner wall of the limiting sleeve 103 is slidably connected to the outer wall of the second connecting rod 104. The lower end of the second connecting rod 104 is hinged to the outer wall of the slip ring 105. The inner wall of the slip ring 105 is slidably connected to the outer wall of the rotating rod 9. A connecting frame 106 is fixedly connected to the upper surface of the slip ring 105. A scraper 107 is fixedly connected to the upper end of the connecting frame 106. The outer wall of the scraper 107 contacts the inner side wall of the dehydration vessel 1. The scraper 107 is a circular rubber structure. The sum of the masses of the limiting ball 804 and the second connecting rod 104 is greater than the mass of the scraper 107, and the length of the second connecting rod 104 is less than the radius of the scraper 107.

[0035] The vibration mechanism 108 also includes a bottom ring 801, the inner wall of which is fixedly connected to the outer wall of the second connecting rod 104. The outer wall of the second connecting rod 104 is provided with a threaded structure on the upper side of the bottom ring 801. The inner wall of the threaded ring 802 is threadedly connected to the outer wall of the second connecting rod 104. The lower side of the threaded ring 802 is in contact with the upper surface of the bottom ring 801. The outer wall of the threaded ring 802 is fixedly connected to the outer wall of the counterweight 803. The vibration mechanism 108 also includes a limiting ball 804, the outer wall of which is fixedly connected to the upper end of the second connecting rod 104.

[0036] The cleaning mechanism 12 includes a water conveying ring 201. The lower surface of the water conveying ring 201 is fixedly connected to the upper side of the dehydration vessel 1. The inner wall of the water conveying ring 201 is rotatably connected to the outer wall of the rotating rod 9 via a bearing. A connecting channel is provided on the upper inner side of the rotating rod 9. A water inlet pipe 202 is fixedly connected to the side wall of the water conveying ring 201. The water inlet pipe 202 connects the inside of the water conveying ring 201 to the outside of the water conveying ring 201. One end of the water inlet pipe 202 located on the outside of the water conveying ring 201 is sealed with a cap. The side wall of the rotating rod 9... A connection hole 203 is also provided, which connects the interior of the rotating rod 9 with the interior of the water supply ring 201. The cleaning mechanism 12 also includes a one-way valve 204, which is located in the middle of the side wall of the rotating rod 9. The output end and input end of the one-way valve 204 connect the outer side and the inner side of the rotating rod 9, respectively. There are four one-way valves 204, which are arranged in a circle with the middle of the rotating rod 9 as the center, and the four one-way valves 204 are located on the upper part of the fixed ring 101.

[0037] In use, the upper end of the observation window 4 is sealed with a glass plate. The fluorobenzene raw material is fed into the dehydration kettle 1 through the feed pipe 7. Then, high-purity argon gas is introduced into the dehydration kettle 1 through the air inlet pipe 5. The upper end of the exhaust pipe 6 is used to evacuate and replace the vacuum three times. 1-10% of the weight of the fluorobenzene dehydrating agent is added into the fluorobenzene. Then, the motor 8 is started to drive the rotating rod 9 and the stirring blade 10 to rotate. When the stirring blade 10 rotates, it stirs and mixes the fluorobenzene, so that the dehydrating agent and fluorobenzene are fully mixed to achieve the purpose of dehydration. Then, the sealing plate 3 is opened to the side to discharge the material in the dehydration kettle 1.

[0038] While the stirring blade 10 agitates the fluorobenzene, it causes the fluorobenzene to surge upwards, causing the solid dehydrating agent inside the fluorobenzene to adhere to the inner wall of the dehydration vessel 1. At this time, due to the rapid rotation of the rotating rod 9, the fixed ring 101 drives the first connecting rod 102, the limiting sleeve 103, the second connecting rod 104, the slip ring 105, and other structures to rotate rapidly. This causes the upper end of the second connecting rod 104 to deflect outwards due to inertia. Simultaneously, the threaded ring 802 and the counterweight 803 move towards the limiting ball 804 due to inertia. Since the fixed ring 101 pulls the limiting sleeve 103, preventing the height of the limiting sleeve 103 from changing, the slip ring 105 will... The slide ring 105 is lifted upward, which in turn pushes the connecting frame 106 upward, causing the connecting frame 106 to push the scraper 107 upward. The scraper 107 rises along the inner wall of the dehydration kettle 1, so that the solid material adhering to the inner wall of the dehydration kettle 1 is all under the scraper 107. After the stirring is completed, as the rotation speed of the rotating rod 9 decreases, due to the influence of the torsion spring at the connection between the lower end of the second connecting rod 104 and the slide ring 105, the second connecting rod 104 will gradually deflect and reset, causing the height of the slide ring 105 and the scraper 107 to decrease, so that the scraper 107 scrapes the solid material adhering to the inner wall of the dehydration kettle 1 back into the fluorobenzene.

[0039] As the slip ring 105 descends, the right end of the second connecting rod 104 moves downward, causing the angle of the second connecting rod 104 to deflect more vertically. This causes the threaded ring 802 to fall due to gravity. When the threaded ring 802 moves to the threaded section, it will rotate. Due to the counterweight of the counterweight block 803, the threaded ring 802 will vibrate, causing the scraper 107 to vibrate. This causes the solid desiccant scraped off by the scraper 107 to fall into the fluorobenzene, preventing it from adhering to the lower surface of the scraper 107.

[0040] After use, water is supplied to the inside of the water ring 201 by connecting the external water pipe to the outer end of the water inlet pipe 202. Then, the motor 8 is started to drive the stirring blade 10 and the rotating rod 9 to rotate, which will cause the water to be sprayed onto the inner wall of the dehydration vessel 1 through the connection hole 203 and the one-way valve 204 to clean the dehydration vessel 1. The rotation of the rotating rod 9 can also drive the scraper 107 to move up and down, so as to clean the inner wall of the dehydration vessel 1.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dehydration kettle for fluorobenzene production, comprising a dehydration kettle (1), a support (2) is fixedly connected to the outer wall of the dehydration kettle (1), a sealing plate (3) is hingedly connected to the lower side of the dehydration kettle (1), an observation window (4), an air inlet pipe (5), an air outlet pipe (6) and a feed pipe (7) are fixedly connected to the side wall of the dehydration kettle (1) respectively, the observation window (4) is located on the front side of the dehydration kettle (1), the air inlet pipe (5) is located on the middle side wall of the dehydration kettle (1), the air outlet pipe (6) and the feed pipe (7) are located on the upper side of the air inlet pipe (5), the observation window (4), the air inlet pipe (5), the air outlet pipe (6) and the feed pipe (7) are all arranged to communicate between the inside and outside of the dehydration kettle (1), a motor (8) is fixedly connected to the upper side of the dehydration kettle (1), a rotating rod (9) is fixedly connected to the lower side output end of the motor (8), the rotating rod (9) penetrates through the dehydration kettle (1) and extends into the inside of the dehydration kettle (1), and the outer wall of the rotating rod (9) is rotatably connected to the upper inner wall of the dehydration kettle (1) through a bearing. The outer wall of the rotating rod (9) is fixedly connected with stirring blades (10), and the upper side of the rotating rod (9) is provided with a scraping mechanism (11); The scraping mechanism (11) comprises: A fixing assembly, a second connecting rod (104), a sliding ring (105), a scraping blade (107) and a vibrating mechanism (108) on the fixing assembly, the sliding ring (105) is arranged on the outer side of the rotating rod (9) and can slide on the outer wall of the rotating rod (9), the scraping blade (107) can move up and down along with the sliding ring (105), one end of the second connecting rod (104) is hingedly connected with the outer wall of the sliding ring (105), and the second connecting rod (104) can perform a deflection movement on the sliding ring (105); The vibrating mechanism (108) comprises a threaded ring (802) and a counterweight (803), and the threaded ring (802) and the counterweight (803) can move up and down on the second connecting rod (104) and rotate at the same time; The dehydration kettle (1) is further provided with a cleaning mechanism (12) on the upper side; The fixing assembly comprises a fixing ring (101), the inner wall of the fixing ring (101) is fixedly connected with the upper portion of the outer wall of the rotating rod (9), the outer wall of the fixing ring (101) is hingedly connected with a first connecting rod (102), the lower end of the first connecting rod (102) is hingedly connected with a limiting sleeve (103), the inner wall of the limiting sleeve (103) is slidingly connected with the outer wall of a second connecting rod (104), the lower end of the second connecting rod (104) is hingedly connected with the outer wall of the sliding ring (105), the inner wall of the sliding ring (105) is slidingly connected with the outer wall of the rotating rod (9), the upper surface of the sliding ring (105) is fixedly connected with a connecting frame (106), the upper end of the connecting frame (106) is fixedly connected with the scraping blade (107), and the outer wall of the scraping blade (107) is in contact with the inner side wall of the dehydration kettle (1); The vibrating mechanism (108) further comprises a bottom ring (801), the inner wall of the bottom ring (801) is fixedly connected with the outer wall of the second connecting rod (104), a threaded structure is formed in the outer wall of the second connecting rod (104) at the upper side of the bottom ring (801), the inner wall of the threaded ring (802) is threadedly connected with the outer wall of the second connecting rod (104), the lower side of the threaded ring (802) is in contact with the upper surface of the bottom ring (801), the outer wall of the threaded ring (802) is fixedly connected with the outer wall of the counterweight (803), and the vibrating mechanism (108) further comprises a limiting ball (804), and the outer wall of the limiting ball (804) is fixedly connected with the upper end of the second connecting rod (104).

2. The dehydrating kettle for fluorobenzene production according to claim 1, characterized in that: The cleaning mechanism (12) comprises a water conveying ring (201), the lower surface of the water conveying ring (201) is fixedly connected with the upper side of the dehydration kettle (1), the inner wall of the water conveying ring (201) is rotatably connected with the outer wall of the rotating rod (9) through a bearing, the inside of the upper side of the rotating rod (9) is provided with a connecting channel, the side wall of the water conveying ring (201) is fixedly connected with a water inlet pipe (202), the inside of the water conveying ring (201) is communicated with the outside of the water conveying ring (201) through the water inlet pipe (202), one end of the water inlet pipe (202) located outside the water conveying ring (201) is sealed through a cover, the side wall of the rotating rod (9) is also provided with a connecting hole (203), the inside of the rotating rod (9) is communicated with the inside of the water conveying ring (201) through the connecting hole (203), the cleaning mechanism (12) further comprises a one-way valve (204), the one-way valve (204) is arranged in the middle of the side wall of the rotating rod (9), and the output end and the input end of the one-way valve (204) are respectively communicated with the outside of the rotating rod (9) and the inside of the rotating rod (9).

3. The dehydrating kettle for fluorobenzene production according to claim 2, characterized in that: The scraper (107) is a circular ring-shaped rubber structure, the sum of the mass of the limiting ball (804) and the second connecting rod (104) is greater than the mass of the scraper (107), and the length of the second connecting rod (104) is smaller than the radius of the scraper (107).

4. The dehydrating kettle for fluorobenzene production according to claim 3, characterized in that: The one-way valve (204) is four, the four one-way valves (204) are arranged in a circle with the middle of the rotating rod (9) as the center, and the four one-way valves (204) are located on the upper part of the fixed ring (101).

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