Reaction kettle and method for fluorine chemical purification

Abstract

The invention discloses a reaction kettle and method for fluorine chemical industry purification, and relates to the technical field of material purification, the reaction kettle comprises a kettle body, a stirring mechanism is arranged in the kettle body, the stirring mechanism comprises a stirring driving part, a stirring shaft and a flow gathering assembly, the output end of the stirring driving assembly is in transmission connection with the stirring shaft, and a liquid lifting channel is formed in the stirring shaft; a flow gathering hole is formed in the side portion of one end, located at the bottom end in the kettle body, of the stirring shaft and communicated with an inlet of the liquid rising channel, a liquid discharging opening is formed in the side portion of the portion, located above the liquid level of the reaction liquid, of the stirring shaft and communicated with an outlet of the liquid rising channel, and the flow gathering assembly is arranged on one side of the flow gathering hole. The flow gathering assembly is used for gathering reaction liquid at the bottom of the kettle body into the flow gathering hole, and the reaction liquid is shifted to an area above the liquid level of the reaction liquid through the liquid lifting channel and the liquid discharging opening in sequence; according to the reaction kettle, materials in the kettle body can be circumferentially stirred, meanwhile, the materials can circularly flow in the vertical direction, the uniform mixing effect is improved, and the reaction rate is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of material purification, and particularly relates to a reaction kettle and a method for fluorine chemical purification. Background Art

[0002] A reactor, broadly defined as a container for physical or chemical reactions, achieves the heating, evaporation, cooling, and low-speed mixing required by the process through structural design and parameter configuration. Reactors are widely used in industries such as petroleum, chemical, rubber, pesticide, pharmaceutical, and food to complete processes such as vulcanization, nitration, fluorination, hydrogenation, polymerization, and condensation.

[0003] In fluorine chemical production, the purification process plays a decisive role in product purity, performance, and subsequent processing efficiency, and uniform raw material mixing is a key prerequisite for effective purification. Fluorine chemical raw materials are mostly fluorine-containing compounds with characteristics such as high corrosiveness, high viscosity, and varying densities. Stirring within the reactor is required to achieve uniform mixing and provide a stable reaction environment for subsequent purification processes such as fluorination and distillation.

[0004] Traditional reactors mostly use traditional straight-blade stirring structures. Although they can achieve basic mixing, raw materials of different densities are prone to stratification due to centrifugal force. Especially when the stirring speed is insufficient, heavy raw materials are prone to sedimentation at the bottom of the reactor, while light raw materials float on the liquid surface, resulting in uneven distribution of raw materials in the upper and lower areas of the reactor, affecting the purification reaction rate and product purity stability. Summary of the Invention

[0005] The purpose of the present invention is to provide a fluorine chemical purification reactor and method with a simple structure and reasonable design in order to solve the above problems.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions: In a first aspect, the present invention discloses a reactor for fluorine chemical purification, comprising: The kettle body is provided with a stirring mechanism, the stirring mechanism includes a stirring drive, a stirring shaft and a flow-gathering component, the output end of the stirring drive component is connected to the stirring shaft in transmission, a liquid-raising channel is provided inside the stirring shaft, a flow-gathering hole is provided on the side of one end of the stirring shaft located at the bottom end of the kettle body, the flow-gathering hole is connected with the inlet of the liquid-raising channel, a liquid discharge port is provided on the side of the stirring shaft located above the liquid level of the reaction liquid, the liquid discharge port is connected with the outlet of the liquid-raising channel, the flow-gathering component is provided on one side of the flow-gathering hole, and the flow-gathering component is used to gather the reaction liquid at the bottom of the kettle body into the flow-gathering hole, and shift it to the area above the liquid level of the reaction liquid through the liquid-raising channel and the liquid discharge port in sequence.

[0007] As a further optimization scheme of the present invention, the flow-converging component includes a second stirring blade, and the stirring shaft has a mounting table on one end side located at the bottom end of the kettle body, and the flow-converging hole is opened on the mounting table. The second stirring blade is arranged on the stirring shaft through the mounting table, and there is a first angle between the extension direction of the second stirring blade and the radial direction of the stirring shaft, and along the rotation direction of the stirring shaft, the second stirring blade is located on the rear side of the flow-converging hole, and the second stirring blade is inclined toward the side close to the rotation direction of the stirring shaft, wherein a flow-converging groove is opened at the front end of the second stirring blade.

[0008] As a further optimization scheme of the present invention, the end of the second stirring blade close to the mounting table is fixedly connected to a turntable, and the turntable is rotatably connected to the stirring shaft. The end of the turntable away from the second stirring blade is fixedly connected to an abutment plate, and the abutment plate is located inside the stirring shaft. The side end of the abutment plate is frictionally abutted with a cam, and the input end of the cam is transmission-connected to a driving member, wherein the cam is located in front of the abutment plate along the rotation direction of the stirring shaft.

[0009] As a further optimization scheme of the present invention, a push rod is provided above the outlet of the liquid lifting channel, and the push rod has an arc groove at one end facing the outlet of the liquid lifting channel. The arc groove protrudes upward, and the arc groove is used to disperse the reaction liquid sprayed from the outlet of the liquid lifting channel into the discharge port.

[0010] As a further optimization scheme of the present invention, the lower end of the push rod is fixedly connected to a guide rod, and the end of the guide rod away from the push rod is slidably connected to the stirring shaft and is sleeved with a spring, and the upper end of the push rod is fixedly connected to a plug block, and the plug block is located in the liquid storage cavity of the secondary shaft, and the secondary shaft is fixedly connected to the stirring shaft, and a connecting hole is provided on the side of the secondary shaft, and the external rotation of the secondary shaft is connected to a transition shaft, and the transition cavity of the transition shaft is connected with the liquid storage cavity of the secondary shaft through the connecting hole, and the transition shaft is fixedly arranged in the kettle body, and a feeding pipe is provided on the outside of the kettle body, and the feeding pipe is connected with the transition cavity of the transition shaft through the connecting pipe.

[0011] As a further optimization solution of the present invention, a guide plate is provided at the lower edge of the liquid discharge port, and the guide plate is fixedly connected to the stirring shaft.

[0012] As a further optimization scheme of the present invention, a first stirring blade is also fixedly provided on the side of the stirring shaft, wherein there is a second angle between the extension direction of the first stirring blade and the radial direction of the stirring shaft, and along the rotation direction of the stirring shaft, the first stirring blade is inclined toward the side away from the rotation direction of the stirring shaft.

[0013] As a further optimization solution of the present invention, a flow blocking block is provided on the front side of the first stirring blade along the rotation direction of the stirring shaft, and the flow blocking block is serrated.

[0014] As a further optimization scheme of the present invention, a temperature control component is provided on the outside of the kettle body, and the temperature control component includes a spiral coil, a heat exchange inlet and a heat exchange outlet. A heat exchange medium flows in the spiral coil, and the heat exchange medium enters the spiral coil from the heat exchange inlet and flows out from the heat exchange outlet to the outside of the spiral coil.

[0015] In a second aspect, the present invention further discloses a method for using a fluorine chemical purification reactor, comprising the following steps: Step 1: Add various reaction solutions required for the reaction into the kettle, and drive the stirring shaft to rotate through the stirring drive member; Step 2: The flow-converging component is driven by the rotation of the stirring shaft, so that the reaction liquid in the bottom area of ​​the kettle body enters the liquid rising channel through the flow-converging hole, and is discharged to the area above the liquid level of the reaction liquid through the discharge port, thereby realizing the vertical flow mixing of the reaction liquid in the kettle body.

[0016] The present invention has at least the following beneficial effects: a reactor and method for fluorine chemical purification disclosed in the present invention, the reactor comprising a reactor body and a stirring mechanism disposed in the reactor body, the stirring mechanism comprising a stirring drive member, a stirring shaft, and a flow converging assembly, wherein the reaction liquid at the bottom of the reactor body is gathered to the flow converging hole by means of the flow converging groove of the second stirring blade in the flow converging assembly, and rises to above the liquid level along the liquid rising channel and is sprinkled on the liquid surface, thereby realizing the vertical circulation of the reaction liquid and ensuring the mixing effect of the reaction liquid; Furthermore, the reaction liquid is sprayed out from the outlet of the liquid rising channel onto the push rod, prompting the block to move upward, thereby opening the outlet of the liquid storage chamber so that additives or reaction aids can be added to the reaction liquid. In order to improve the efficiency of the mixing reaction, when the rotation of the stirring shaft increases, the impact force of the reaction liquid sprayed out from the outlet of the liquid rising channel on the push rod is increased, thereby increasing the opening degree of the block, thereby increasing the addition rate of the additive and avoiding reaction delay caused by insufficient additives. In addition, a first stirring blade is provided on one side of the stirring shaft, and a flow block is provided on the front side of the first stirring blade. When the reaction liquid flows through the serrated edge of the flow block, local eddies and turbulence (small-scale turbulence) will be formed at the concave and convex parts of each serration, breaking the laminar state of the liquid. Even if the liquid is locally mixed, contact and collision between different components in the local reaction liquid are promoted, thereby increasing the reaction rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The present invention Figure 1 A schematic diagram of a partial front cross-sectional structure of Figure 3 It is a schematic diagram of the internal cross-sectional structure of the transition shaft and the secondary shaft of the present invention; Figure 4 This invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the internal cross-sectional structure of the transition shaft and the auxiliary shaft in the state where the plug of the present invention is opened; Figure 6 It is a structural schematic diagram of the flow converging assembly of the present invention; Figure 7 The present invention Figure 6 Schematic diagram of the top view structure; Figure 8 This invention Figure 7 Enlarged view of point B in the middle; Figure 9 It is a schematic diagram of the top structure of the first stirring blade and the stirring shaft of the present invention.

[0018] In the figure: 1. kettle body; 2. stirring mechanism; 21. motor; 22. connecting pipe; 221. secondary shaft; 222. transition shaft; 223. connecting hole; 224. liquid storage chamber; 225. plug; 226. abutment rod; 2261. arc groove; 227. discharge port; 228. guide plate; 229. guide rod; 2210. spring; 23. stirring shaft; 24. first stirring blade; 241. baffle; 25. second stirring blade; 251. focusing groove; 252. baffle; 253. mounting table; 254. focusing hole; 255. liquid rising channel; 256. turntable; 257. abutment plate; 258. cam; 26. discharge pipe; 3. feeding port; 4. temperature control component; 5. feeding pipe. DETAILED DESCRIPTION

[0019] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] like Figure 1 、 Figure 2 and Figure 6 As shown, the present invention provides a fluorine chemical purification reactor, comprising: The kettle body 1 is provided with a stirring mechanism 2, and the stirring mechanism 2 includes a stirring drive member, a stirring shaft 23 and a flow-gathering component. The output end of the stirring drive component is transmission-connected to the stirring shaft 23. A liquid-raising channel 255 is provided inside the stirring shaft 23. A flow-gathering hole 254 is provided on the side of one end of the stirring shaft 23 located at the bottom end of the kettle body 1. The flow-gathering hole 254 is connected to the inlet of the liquid-raising channel 255. A drain port 227 is provided on the side of the stirring shaft 23 located above the liquid level of the reaction liquid. The drain port 227 is connected to the outlet of the liquid-raising channel 255. The flow-gathering component is provided on one side of the flow-gathering hole 254. The flow-gathering component is used to gather the reaction liquid at the bottom of the kettle body 1 into the flow-gathering hole 254, and shift it to the area above the liquid level of the reaction liquid through the liquid-raising channel 255 and the drain port 227 in sequence.

[0021] It should be noted that if Figure 2 As shown, the dotted line indicates the liquid level position of the reaction liquid. After the various liquid raw materials required for the reaction are added to the kettle body 1 through the feeding port 3, continuous stirring is required to promote the mixing reaction of the reaction liquid. In the above embodiment, when the stirring shaft 23 is driven to rotate by the stirring driving member, the reaction liquid is gathered to the focusing hole 254 with the help of the focusing component. As the pressure of the liquid overcomes its own gravity, it rises along the liquid rising channel 255 to the outlet of the liquid rising channel 255 and is discharged to the area above the reaction liquid level through the discharge port 227. Under the centrifugal action of the rotation of the stirring shaft 23, it is evenly thrown onto the surface of the reaction liquid in the circumferential direction. The above action is repeated. When the focusing component rotates circumferentially with the stirring shaft 23 for stirring and mixing, the reaction liquid in the kettle body 1 can also be circumferentially mixed, fully ensuring uniform mixing and distribution among the various reaction liquids, and sufficient reaction, avoiding the situation where some heavy raw materials with high density are deposited at the bottom of the kettle body 1 while light raw materials float on the liquid surface, thereby improving the purification reaction rate.

[0022] For example, see Figure 6 and Figure 7 The converging assembly includes a second stirring blade 25, and the stirring shaft 23 is located at one end of the bottom end of the kettle body 1 and has a mounting table 253. The converging hole 254 is opened on the mounting table 253. The second stirring blade 25 is set on the stirring shaft 23 through the mounting table 253. The extension direction of the second stirring blade 25 and the radial direction of the stirring shaft 23 have a first angle a. Figure 7 As shown, the dotted line indicates the radial direction of the stirring shaft 23, and along the rotation direction of the stirring shaft 23, that is, Figure 7 In the counterclockwise direction shown, the second stirring blade 25 is located on the rear side of the flow-gathering hole 254, and the second stirring blade 25 is inclined toward the side close to the rotation direction of the stirring shaft 23, that is, the first angle a is the angle of the dotted line rotating counterclockwise, wherein the front end of the second stirring blade 25 is provided with a flow-gathering groove 251.

[0023] As the second stirring blade 25 rotates and the inclined second stirring blade 25 squeezes the reaction liquid, the squeezing force of the reaction liquid on the second stirring blade 25 has a component force in the radial direction, thereby prompting the reaction liquid to gather and flow along the converging groove 251 toward the converging hole 254. As the liquid continues to gather and squeeze, the liquid in the kettle body 1 exerts pressure on the liquid in the converging hole 254, and the pressure is sufficient to resist the gravity that the liquid needs to overcome to rise, thereby causing the gathered liquid to rise to an area above the liquid level through the liquid rising channel 255.

[0024] For example, see Figure 7 and Figure 8 The second stirring blade 25 is fixedly connected to a turntable 256 at one end close to the mounting table 253, and the turntable 256 is rotatably connected to the stirring shaft 23. The turntable 256 is fixedly connected to an abutment plate 257 at one end away from the second stirring blade 25. The abutment plate 257 is located inside the stirring shaft 23, and the side end of the abutment plate 257 is frictionally abutted with a cam 258. The input end of the cam 258 is transmission-connected to a driving member, wherein, along the rotation direction of the stirring shaft 23, the cam 258 is located in front of the abutment plate 257.

[0025] It should be noted that the driving member is a driving motor or a driving electric motor. When the rotation speed of the stirring shaft 23 is increased in order to increase the stirring rate, the resistance encountered by the second stirring blade 25 will increase. In order to reduce the stirring resistance of the second stirring blade 25, the rotation speed signal of the stirring shaft 23 is controlled by the controller to control the driving signal of the driving member. When the rotation speed of the stirring shaft 23 increases, the cam 258 is driven to rotate by the driving member, as shown in FIG. Figure 8 As shown, the cam 258 rotates counterclockwise, causing the abutment plate 257 to be abutted and driving the turntable 256 to swing counterclockwise, thereby causing the first angle a of the second stirring blade 25 to increase, thereby increasing the radial component of the extrusion force of the reaction liquid on the second stirring blade 25, so as to reduce the component of the extrusion force of the reaction liquid on the second stirring blade 25 along the surface direction perpendicular to the converging groove 251, thereby helping the reaction liquid to gather along the converging groove 251.

[0026] It needs to be further explained that, Figure 6 As shown, baffles 252 are respectively provided above and below the second stirring blade 25. The baffle 252 is fixedly provided on the mounting table 253, and one end surface of the baffle 25 facing the second stirring blade 25 is in contact with the second stirring blade 25, so as to block the reaction liquid flowing from the second stirring blade 25 that is rotated to adjust the angle in the upper and lower directions, reduce the diffusion degree of the reaction liquid near the focusing hole 254, and improve the focusing effect.

[0027] It should be noted that the rotating contact surface between the turntable 256 and the stirring shaft 23 is sealed and does not cause the reaction liquid to enter the area where the cam 258 is located. Figure 8 Only the positional relationship between one cam 258 and the abutment plate 257 and the turntable 256 is illustrated. In actual application, each second stirring blade 25 is respectively provided with a cam 258, an abutment plate 257 and a turntable 256. The driving members corresponding to the multiple cams 258 respectively drive the cams 258 synchronously to adjust the inclination degree of the multiple second stirring blades 25 synchronously, which will not be elaborated here.

[0028] For example, see Figure 3 and Figure 4 A stopper 226 is provided above the outlet of the liquid-lifting channel 255. The end of the stopper 226 facing the outlet of the liquid-lifting channel 255 has an arcuate groove 2261. The arcuate groove 2261 protrudes upward and is used to disperse the reaction liquid ejected from the outlet of the liquid-lifting channel 255 into the liquid discharge port 227. Thus, under the obstruction of the arcuate groove 2261, the guiding property of the arcuate surface is utilized to divert the reaction liquid, which may have been directly ejected or in a disordered state, and guide it smoothly along the surface of the arcuate groove 2261 to the liquid discharge port 227.

[0029] It should be noted that, please continue to refer to Figure 3 and Figure 4 The lower end of the push rod 226 is fixedly connected to a guide rod 229, and the end of the guide rod 229 away from the push rod 226 is slidably connected to the stirring shaft 23 and is sleeved with a spring 2210. The upper end of the push rod 226 is fixedly connected to a plug 225, and the plug 225 is located in the liquid storage cavity 224 of the secondary shaft 221. The secondary shaft 221 is fixedly connected to the stirring shaft 23. A connecting hole 223 is provided on the side of the secondary shaft 221, and the external rotation of the secondary shaft 221 is connected to the transition shaft 222. The transition cavity of the transition shaft 222 is connected to the liquid storage cavity 224 of the secondary shaft 221 through the connecting hole 223. The transition shaft 222 is fixedly set in the kettle body 1, and a feeding pipe 5 is set on the outside of the kettle body 1. The feeding pipe 5 is connected to the transition cavity of the transition shaft 222 through the connecting pipe 22.

[0030] In the above embodiment, the stirring drive member is a motor 21, and the output end of the motor 21 is connected to the secondary shaft 221, thereby driving the stirring shaft 23 to rotate. During the rotation of the secondary shaft 221, the transition cavity of the transition shaft 222 is always connected to the liquid storage cavity 224 through the connecting hole 223. Figure 3As shown, the plug 225 is in the initial position. At this time, the plug 225 seals the outlet of the liquid storage chamber 224. After the stirring shaft 23 rotates to the required speed, the reaction liquid ejected from the outlet of the liquid lifting channel 255 creates an impact force on the plug 225, thereby moving the plug 225 upward and opening the outlet of the liquid storage chamber 224. The additives or auxiliary reactants required for the reaction are added through the feeding pipe 5, and enter the liquid storage chamber 224 through the connecting pipe 22 and the transition shaft 222 in turn, and are discharged through the outlet of the liquid storage chamber 224. As the stirring shaft 23 rotates, the additives or auxiliary reactants are also centrifugally dispersed in the reaction liquid through the discharge port 227, and mixed as the reaction liquid flows up and down, thereby improving the reaction efficiency.

[0031] Moreover, when the rotation speed of the stirring shaft 23 increases, the squeezing force of the second stirring blade 25 on the reaction liquid increases, so that the gathering force of the reaction liquid toward the focusing hole 254 increases, that is, the liquid pressure when the reaction liquid enters the focusing hole 254 increases, so that the impact force of the reaction liquid on the push rod 226 when it is ejected through the outlet of the liquid lifting channel 255 increases. Therefore, the push rod 226 drives the block 225 to increase the opening degree of the outlet of the liquid storage chamber 224 to accelerate the addition rate of additives or auxiliary reactants, thereby ensuring that when stirring and accelerating mixing, the addition rate of additives or auxiliary reactants is accelerated to avoid reaction delays due to insufficient additives.

[0032] For example, see Figure 3 The lower edge of the discharge port 227 is provided with a guide plate 228, which is fixedly connected to the stirring shaft 23. When the guide plate 228 rotates at high speed with the stirring shaft 23, a strong radial centrifugal force is generated, and its surface can provide a secondary "boost" to the ejected material, promoting the material to be dispersed over a large area on the surface of the reaction liquid.

[0033] For example, see Figure 2 and Figure 9 The side of the stirring shaft 23 is further fixed with a first stirring blade 24, wherein the extension direction of the first stirring blade 24 has a second angle b with the radial direction of the stirring shaft 23, and along the rotation direction of the stirring shaft 23, that is, Figure 9 In the counterclockwise direction shown, the first stirring blade 24 is tilted toward a side away from the rotation direction of the stirring shaft 23. Therefore, when the first stirring blade 24 stirs the reaction liquid, compared with the conventional method of setting the stirring blade in the radial direction, the circumferential resistance of the reaction liquid to the first stirring blade 24 is reduced.

[0034] Along the rotation direction of the stirring shaft 23, a flow block 241 is provided on the front side of the first stirring blade 24, and the flow block 241 is sawtooth-shaped. Figure 9As shown, when the reaction liquid flows through the serrated edge of the baffle 241, local eddies and turbulence (small-scale turbulence) will be formed at the concave and convex parts of each serration, breaking the laminar state of the liquid. Even if the liquid is locally mixed, it will promote the contact and collision between different components in the local reaction liquid, thereby increasing the reaction rate. In addition, the serrated end of the serrated baffle 241 can push the reaction liquid toward the direction close to the stirring shaft 23, reduce the centrifugal force of the reaction liquid, and avoid some heavy raw materials from gathering near the inner wall of the kettle body 1 due to centrifugal force, which will cause uneven distribution of the reaction liquid material near the stirring shaft 23 and affect the reaction rate.

[0035] It should be noted that if Figure 1 and Figure 2 As shown, a temperature control component 4 is provided on the outside of the kettle body 1. The temperature control component 4 includes a spiral coil, a heat exchange inlet and a heat exchange outlet. A heat exchange medium flows in the spiral coil. The heat exchange medium enters the spiral coil from the heat exchange inlet and flows out of the spiral coil from the heat exchange outlet. The heat exchange medium is one of hot water, steam, and heat transfer oil. The spiral coil is used to heat or cool the reaction liquid in the kettle body 1 to achieve temperature control.

[0036] It should be noted that the liquid product produced by the reaction is discharged through the discharge pipe 26, and the gaseous product produced is discharged into a pre-collection container through the exhaust pipe at the upper end of the kettle body 1, which is not limited here.

[0037] On the other hand, the present invention also provides a method for using a fluorine chemical purification reactor, comprising the following steps: Step 1: Add the various reaction solutions required for the reaction into the kettle 1, and drive the stirring shaft 23 to rotate through the stirring drive member; Step 2: The flow-converging component is driven by the rotation of the stirring shaft 23, so that the reaction liquid in the bottom area of ​​the kettle body 1 enters the liquid rising channel 255 through the flow-converging hole 254, and is discharged to the area above the liquid level of the reaction liquid through the discharge port 227, thereby realizing the vertical flow mixing of the reaction liquid in the kettle body 1.

[0038] It should be noted that, when the fluorine chemical purification reactor is used, the required multiple reactants are put into the reactor body 1, and the temperature required for the reaction is adjusted by the temperature control component 4; The motor 21 is started. With the rotation of the stirring shaft 23, the second stirring blade 25 rotates synchronously. The reaction liquid is concentrated toward the focusing hole 254 under the flow of the focusing groove 251 and enters the liquid rising channel 255. It is then discharged from the outlet of the liquid rising channel 255 and impacts the arc groove 2261 of the support rod 226. It is then directed to the drain port 227 and thrown out, realizing vertical liquid circulation in the kettle body 1. Furthermore, the reaction liquid ejected from the outlet of the liquid-rising channel 255 impacts the stopper 226, causing the plug 225 to move upward, opening the outlet of the liquid storage chamber 224, and allowing the required additives or reaction aids to be added to the reaction liquid. Furthermore, in order to increase the reaction rate, as the rotation speed of the stirring shaft 23 increases, the impact of the reaction liquid ejected from the outlet of the liquid-rising channel 255 on the stopper 226 also increases, thereby increasing the opening degree of the plug 225, thereby increasing the addition rate of the additives or reaction aids and avoiding reaction delays due to insufficient additives. In addition, the first stirring blade 24 also rotates with the stirring shaft 23. A baffle 241 is provided on the front side of the first stirring blade 24. When the reaction liquid flows through the serrated edge of the baffle 241, local eddies and turbulence (small-scale turbulence) will be formed at the concave and convex parts of each serration, breaking the laminar flow state of the liquid. Even if the liquid is locally mixed, contact and collision between different components in the local reaction liquid are promoted, thereby increasing the reaction rate.

[0039] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A fluorine chemical purification reactor, characterized in that: include: A kettle body (1) is provided with a stirring mechanism (2) in the kettle body (1), the stirring mechanism (2) comprising a stirring drive, a stirring shaft (23) and a flow-gathering assembly, the output end of the stirring drive assembly being in transmission connection with the stirring shaft (23), a liquid-raising channel (255) being provided inside the stirring shaft (23), a flow-gathering hole (254) being provided on the side of one end of the stirring shaft (23) located at the bottom end inside the kettle body (1), the flow-gathering hole (254) being communicated with the inlet of the liquid-raising channel (255), a liquid discharge port (227) being provided on the side of the portion of the stirring shaft (23) located above the liquid level of the reaction liquid, the liquid discharge port (227) being communicated with the outlet of the liquid-raising channel (255), the flow-gathering assembly being provided on one side of the flow-gathering hole (254), and being used for gathering the reaction liquid at the bottom of the kettle body (1) into the flow-gathering hole (254), and then shifting the reaction liquid to an area above the liquid level of the reaction liquid through the liquid-raising channel (255) and the liquid discharge port (227) in sequence.

2. A fluorine chemical purification reactor according to claim 1, characterized in that: The flow-converging component includes a second stirring blade (25), the stirring shaft (23) is located at one end side of the bottom end inside the kettle body (1) and has a mounting table (253), the flow-converging hole (254) is opened on the mounting table (253), the second stirring blade (25) is set on the stirring shaft (23) through the mounting table (253), the extension direction of the second stirring blade (25) and the radial direction of the stirring shaft (23) have a first angle, and along the rotation direction of the stirring shaft (23), the second stirring blade (25) is located at the rear side of the flow-converging hole (254), and the second stirring blade (25) is inclined toward the side close to the rotation direction of the stirring shaft (23), wherein the front end of the second stirring blade (25) is provided with a flow-converging groove (251).

3. A fluorine chemical purification reactor according to claim 2, characterized in that: One end of the second stirring blade (255) close to the mounting table (253) is fixedly connected to a turntable (256), and the turntable (256) is rotatably connected to the stirring shaft (23). One end of the turntable (256) away from the second stirring blade (25) is fixedly connected to an abutment plate (257), and the abutment plate (257) is located inside the stirring shaft (23). The side end of the abutment plate (257) is frictionally abutted against a cam (258), and the input end of the cam (258) is transmission-connected to a driving member, wherein, along the rotation direction of the stirring shaft (23), the cam (258) is located in front of the abutment plate (257).

4. A fluorine chemical purification reactor according to claim 3, characterized in that: A support rod (226) is provided above the outlet of the liquid lifting channel (255). The support rod (226) has an arc groove (2261) at one end facing the outlet of the liquid lifting channel (255). The arc groove (2261) protrudes upward. The arc groove (2261) is used to disperse the reaction liquid ejected from the outlet of the liquid lifting channel (255) into the liquid discharge port (227).

5. A fluorine chemical purification reactor according to claim 4, characterized in that: The lower end of the push rod (226) is fixedly connected to a guide rod (229), and the end of the guide rod (229) away from the push rod (226) is slidably connected to the stirring shaft (23) and is sleeved with a spring (2210). The upper end of the push rod (226) is fixedly connected to a plug (225), and the plug (225) is located in the liquid storage cavity (224) of the secondary shaft (221). The secondary shaft (221) is fixedly connected to the stirring shaft (23). A connecting hole (223) is provided on the side, and the outside of the secondary shaft (221) is rotatably connected to a transition shaft (222). The transition cavity of the transition shaft (222) is connected to the liquid storage cavity (224) of the secondary shaft (221) through the connecting hole (223). The transition shaft (222) is fixedly arranged in the kettle body (1). A feeding pipe (5) is provided on the outside of the kettle body (1), and the feeding pipe (5) is connected to the transition cavity of the transition shaft (222) through the connecting pipe (22).

6. A fluorine chemical purification reactor according to claim 5, characterized in that: A guide plate (228) is provided at the lower edge of the liquid discharge port (227), and the guide plate (228) is fixedly connected to the stirring shaft (23).

7. A fluorine chemical purification reactor according to claim 6, characterized in that: A first stirring blade (24) is also fixedly provided on the side of the stirring shaft (23), wherein a second angle is formed between the extension direction of the first stirring blade (24) and the radial direction of the stirring shaft (23), and along the rotation direction of the stirring shaft (23), the first stirring blade (24) is inclined toward a side away from the rotation direction of the stirring shaft (23).

8. A fluorine chemical purification reactor according to claim 7, characterized in that: Along the rotation direction of the stirring shaft (23), a flow blocking block (241) is provided on the front side of the first stirring blade (24), and the flow blocking block (241) is sawtooth-shaped.

9. A fluorine chemical purification reactor according to claim 8, characterized in that: A temperature control component (4) is provided on the outside of the kettle body (1), and the temperature control component (4) includes a spiral coil, a heat exchange inlet, and a heat exchange outlet. A heat exchange medium flows in the spiral coil, and the heat exchange medium enters the spiral coil from the heat exchange inlet and flows out of the spiral coil from the heat exchange outlet.

10. The method for using a fluorine chemical purification reactor according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: Add multiple reaction liquids required for the reaction into the kettle (1), and drive the stirring shaft (23) to rotate through the stirring drive member; Step 2: The flow-converging component is driven by the rotation of the stirring shaft (23), so that the reaction liquid in the bottom area of ​​the kettle body (1) enters the liquid-raising channel (255) through the flow-converging hole (254) and is discharged to the area above the liquid level of the reaction liquid through the discharge port (227), thereby realizing the flow mixing of the reaction liquid in the kettle body (1) in the vertical direction.

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