Reaction device for preparing trimethylsilyl trifluoromethanesulfonate

Abstract

The invention discloses a reaction device for preparing trimethylsilyl trifluoromethanesulfonate, the reaction device comprises a tubular reactor, a driving plate, a scraper mechanism and a guide plate, two tube plates are symmetrically and fixedly arranged on the two sides of the tubular reactor, a plurality of reaction tubes are fixedly arranged between the two tube plates, and the driving plate and the scraper mechanism are arranged in the tubular reactor. A feed port and a discharge port are respectively formed in two ends of the tubular reactor, the driving plate is mounted on a tube plate, close to one side of the discharge port, of the reaction shell, and a liquid inlet cavity for conveying a cooling medium is formed among the driving plate, the tube plate and the reaction shell; a driving plate is arranged in the reaction shell, a scraper mechanism is rotatably arranged between the driving plate and the tube plate close to the feed port, a spiral guide plate is fixedly arranged between the two tube plates in the reaction shell, a plurality of hole channels for the reaction tubes to penetrate through are formed in the guide plate, and the diameter of each hole channel is larger than the outer diameter of each reaction tube.

Description

Technical Field

[0001] This invention relates to the field of chemical production equipment technology, specifically a reaction apparatus for preparing trimethylsilyl trifluoromethanesulfonate. Background Technology

[0002] Currently, the preparation of trimethylsilyl trifluoromethanesulfonate is usually carried out by reacting trimethylchlorosilane with trifluoromethanesulfonic acid. This reaction is violently exothermic and produces hydrogen chloride gas. Traditional multi-tube reactors have the following problems: 1. During heat exchange, the cooling medium will form a boundary layer or scale on the surface of the reaction tube, which will reduce the heat transfer coefficient of the reaction tube and make it impossible to accurately control the reaction temperature. 2. Scaling in the reaction tubes requires shutdown for cleaning, which severely affects the reaction rate and reduces production efficiency.

[0003] In recent years, although various improved reactors have emerged, such as scraped reactors and static mixing tube reactors, their structures are complex, their control precision is insufficient, and they are difficult to balance heat exchange and descaling.

[0004] Therefore, it is necessary to provide a reaction apparatus for preparing trimethylsilyl trifluoromethanesulfonate to solve the problems mentioned in the background art. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a reaction apparatus for preparing trimethylsilyl trifluoromethanesulfonate, comprising a tubular reactor, a drive plate, a scraper mechanism, and a guide plate. The tubular reactor includes a reaction shell, tube sheets, and reaction tubes. Two tube sheets are symmetrically fixed on both sides of the tubular reactor, and multiple reaction tubes are fixedly arranged between the two tube sheets. An inlet and an outlet are respectively provided at both ends of the tubular reactor, and the inlet and outlet are connected to the multiple reaction tubes. A flow equalization plate is provided on the tube sheet near the inlet. The drive plate is installed on the tube sheet near the outlet of the reaction shell, and forms an inlet chamber for conveying a cooling medium between the drive plate and the tube sheet near the inlet. A scraper mechanism is rotatably arranged between the drive plate and the tube sheet near the inlet. A spiral guide plate is fixedly arranged inside the reaction shell between the two tube sheets. The guide plate has multiple channels for the reaction tubes to pass through, and the diameter of the channels is larger than the outer diameter of the reaction tubes.

[0006] Preferably, the drive plate has multiple mounting holes for the reaction tube to pass through. The drive plate is hollow inside and has three rotating ring mechanisms that are sealed and rotatably arranged from the outside to the inside. The three rotating ring mechanisms divide the inside of the drive plate from the outside to the inside into a first infusion chamber, a second infusion chamber, a third infusion chamber, and an outlet chamber. The second infusion chamber, the third infusion chamber, and the outlet chamber each have multiple guide blocks evenly distributed circumferentially. A partition plate is fixedly arranged between two adjacent guide blocks in the vertical direction and between the two outermost guide blocks in this direction and the inner wall of the drive plate. The first infusion chamber, the second infusion chamber, and the third infusion chamber are each divided into two cavities by the partition plates inside them.

[0007] Preferably, the rotating ring mechanism includes a first ring plate, a second ring plate, an arc-shaped connecting rod, a sealing slide plate, and a spring. The first ring plate and the second ring plate are fixedly connected by an arc-shaped connecting rod to form an annular plate with two openings. The first ring plate and the second ring plate are rotatably disposed in the two cavities respectively. The two ends of the first ring plate and the second ring plate are adjacent to the two spacers respectively. A through hole is provided on the spacer adjacent to the arc-shaped connecting rod for the arc-shaped connecting rod to slide through. A sealing slide plate is fixedly disposed at one end of the first ring plate adjacent to the other spacer plate, and a spring is disposed between the sealing slide plate and the spacer plate. The inner sides of the first ring plate and the second ring plate are sealed and rotatably fitted with the outer sides of the adjacent guide blocks. The outer end of the sealing slide plate is sealed and slidably connected with the inner side of the guide block connected to the spacer plate.

[0008] Preferably, a liquid supply channel is formed between two adjacent guide blocks in a plurality of guide blocks evenly distributed in the same circumference, and the plurality of liquid supply channels respectively connect the first infusion chamber, the second infusion chamber, the third infusion chamber and the outlet chamber to each other; Both the first ring plate and the second ring plate are evenly provided with multiple through holes along the circumference. The first ring plate and the second ring plate can block the liquid supply channel and make the through holes connect with the liquid supply channel by rotation.

[0009] Preferably, the scraper mechanism includes a ring block, an arc-shaped blade, an arc-shaped guide plate, and blades. Two ring blocks are configured, and the two ring blocks are respectively rotatably mounted on the drive plate and the tube plate near the feed inlet. Multiple arc-shaped blades are fixedly arranged circumferentially between the two ring blocks. The inner side of the arc-shaped blade is arc-shaped and rotatably fits against the outer side of the reaction tube. An arc-shaped guide plate is fixedly mounted on the arc-shaped blade, and the outer side of the arc-shaped guide plate rotatably fits against the inner side of the channel. Multiple blades are fixedly arranged circumferentially on the ring block near the drive plate.

[0010] Preferably, the guide block has an open circular cavity inside, the blade extends into the circular cavity and is rotatable, and the blade protrudes from the opening of the circular cavity and extends into the liquid supply channel.

[0011] Preferably, the drive plate has a plurality of inlet ports communicating with the first infusion chamber on the side near the discharge port, and an outlet port communicating with the discharge chamber on the side away from the discharge port. The second and third infusion chambers have a plurality of jet holes circumferentially formed on the side away from the discharge port.

[0012] Compared with the prior art, the present invention provides a reaction apparatus for preparing trimethylsilyl trifluoromethanesulfonate, which has the following beneficial effects: In this invention, the combination of a spiral guide plate and a rotating scraper mechanism creates spiral turbulence within the reaction shell, effectively disrupting the boundary stagnant layer on the outer wall of the reaction tube. This significantly enhances the heat exchange effect on the reaction tube, allowing for precise temperature control and improving reaction and product preparation efficiency. Simultaneously, the rotating scraper mechanism removes any scale deposits that may accumulate on the outer wall of the reaction tube, ensuring a clean surface and maintaining a consistently stable heat exchange efficiency. This guarantees continuous and stable reactor operation. Furthermore, the drive plate incorporates multiple liquid delivery chambers and a rotating mechanism, automatically controlling the flow path and jet of the cooling medium using differential pressure. This allows the cooling medium to flow uniformly along multiple supply channels while simultaneously driving the scraper mechanism. This eliminates the need for additional driving force, resulting in energy savings and higher control precision. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the tubular reactor in this invention; Figure 3 This is a schematic diagram of the connection structure between the drive plate and the scraper mechanism in this invention; Figure 4 This is a schematic diagram of the flow guide plate in this invention; Figure 5 This is a schematic diagram of the drive board in this invention; Figure 6 This is a schematic diagram of the conversion mechanism in this invention; Figure 7 This is a schematic diagram of the scraper mechanism in this invention; Figure 8 This is a schematic diagram of the connection structure between the scraper mechanism and the reaction tube in this invention; In the diagram: 1. Tubular reactor; 11. Reactor shell; 12. Tube sheet; 13. Reactor tube; 14. Feed inlet; 15. Discharge outlet; 16. Liquid inlet chamber; 2. Drive plate; 21. Mounting hole; 22. Rotary ring mechanism; 221. Ring plate one; 222. Ring plate two; 223. Arc-shaped connecting rod; 224. Sealing slide plate; 225. Spring; 226. Through hole; 23. First liquid delivery chamber; 24. Second liquid delivery chamber; 25. Third liquid delivery chamber; 26. Liquid outlet chamber; 27. Guide block; 271. Spacer plate; 272. Liquid supply channel; 273. Circular cavity; 28. Liquid inlet; 29. ​​Liquid outlet; 3. Scraper mechanism; 31. Ring block; 32. Arc-shaped blade; 33. Arc-shaped guide plate; 34. Blade; 4. Flow guide plate; 41. Channel. Detailed Implementation

[0014] Please see Figures 1 to 8 In this embodiment of the invention, a reaction apparatus for preparing trimethylsilyl trifluoromethanesulfonate includes a tubular reactor 1, a drive plate 2, a scraper mechanism 3, and a guide plate 4. The tubular reactor 1 includes a reaction shell 11, tube sheets 12, and reaction tubes 13. Two tube sheets 12 are symmetrically fixed on both sides of the tubular reactor 1, and multiple reaction tubes 13 are fixedly arranged between the two tube sheets 12. An inlet 14 and an outlet 15 are respectively provided at both ends of the tubular reactor 1. The inlet 14 and the outlet 15 are connected to the multiple reaction tubes 13. The tube sheet 12 closest to the inlet 14 is... A flow equalization plate is provided on the 2. The drive plate 2 is installed on the tube sheet 12 near the outlet 15 of the reaction shell 11, and forms an inlet chamber 16 for conveying cooling medium between the drive plate 2 and the tube sheet 12 and the reaction shell 11. A scraper mechanism 3 is rotatably provided between the drive plate 2 and the tube sheet 12 near the inlet 14. A spiral guide plate 4 is fixedly provided inside the reaction shell 11 between the two tube sheets 12. The guide plate 4 has a plurality of channels 41 for the reaction tube 13 to pass through. The diameter of the channels 41 is larger than the outer diameter of the reaction tube 13. The drive plate 2 has multiple mounting holes 21 for the reaction tube 13 to pass through. The drive plate 2 is hollow inside and has three rotating ring mechanisms 22 that are sealed and rotatably arranged from the outside to the inside. The three rotating ring mechanisms 22 divide the inside of the drive plate 2 from the outside to the inside into a first infusion chamber 23, a second infusion chamber 24, a third infusion chamber 25 and an outlet chamber 26. The second infusion chamber 24, the third infusion chamber 25 and the outlet chamber 26 are each evenly distributed with multiple guide blocks 27 at intervals along the circumference. A spacer plate 271 is fixedly arranged between two adjacent guide blocks 27 in the vertical direction and between the two outermost guide blocks 27 in this direction and the inner wall of the drive plate 2. The first infusion chamber 23, the second infusion chamber 24 and the third infusion chamber 25 are each divided into two cavities by the spacer plate 271 inside them. The rotating ring mechanism 22 includes a first ring plate 221, a second ring plate 222, an arc-shaped connecting rod 223, a sealing slide plate 224, and a spring 225. The first ring plate 221 and the second ring plate 222 are fixedly connected by an arc-shaped connecting rod 223 to form an annular plate with two openings. The first ring plate 221 and the second ring plate 222 are rotatably disposed in the two cavities respectively. The two ends of the first ring plate 221 and the second ring plate 222 are respectively adjacent to the two spacer plates 271, and the ends adjacent to the arc-shaped connecting rod 223 are respectively adjacent to the spacer plates 271. The spacer plate 271 has a through hole for the arc-shaped connecting rod 223 to slide through. A sealing slide plate 224 is fixedly provided at one end of the ring plate 221 adjacent to the other spacer plate 271, and a spring 225 is provided between the sealing slide plate 224 and the spacer plate 271. The inner sides of the ring plate 221 and the ring plate 222 are sealed and rotatedly fitted with the outer side of the adjacent guide block 27. The outer end of the sealing slide plate 224 is sealed and slidably connected to the inner side of the guide block 27 connected to the spacer plate 271.

[0015] In this embodiment, a liquid supply channel 272 is formed between two adjacent guide blocks 27 that are evenly distributed in the same circumference. The multiple liquid supply channels 272 respectively connect the first infusion chamber 23, the second infusion chamber 24, the third infusion chamber 25 and the outlet chamber 26 to each other. Both the first ring plate 221 and the second ring plate 222 are provided with a plurality of through holes 226 evenly distributed in the circumferential direction. The first ring plate 221 and the second ring plate 222 can block the liquid supply channel 272 and make the through holes 226 connected to the liquid supply channel 272 by rotation.

[0016] Please see Figure 5 and Figure 6When the pressure in the first infusion chamber 23, the second infusion chamber 24, and the third infusion chamber 25 increases, driving the rotating ring mechanism 22 inside them to rotate, the second ring plate 222 in the left cavity will not rotate on its own. However, when the first ring plate 221 in the right cavity is under pressure, the sealing slide plate 224 will slide along the guide block 27 and squeeze the spring 225. At this time, the first ring plate 221 will be driven to rotate, thereby connecting the through hole 226 with the liquid supply channel 272, allowing the cooling medium to flow through the liquid supply channel 272. At the same time, the rotation of the first ring plate 221 can further pull the second ring plate 222 to rotate through the arc-shaped connecting rod 223, allowing the cooling medium in the left cavity to also enter the liquid supply channel 272. In addition, since the sealing slide plate 224 is located at the top of the right cavity, only the pressure in the cavity drives the sealing slide plate 224. When the slide plate 224 and the first ring plate 221 rotate, the cooling medium flows through the liquid supply channel 272. When the first ring plate 221 and the second ring plate 222 rotate, all the liquid supply channels 272 will be opened. Therefore, the cooling medium will not enter only from the bottom liquid supply channel 272. That is, the liquid flow pressure in each liquid supply channel 272 is the same and can drive the rotating blades 34 inside to rotate. This allows the arc-shaped blades 32 to rotate along the outside of the reaction tube 13, generating turbulence on the outside of the reaction tube 13. This breaks down the boundary retention layer on the surface of the reaction tube 13 and cleans the scale on the reaction tube 13, ensuring that the surface of the reaction tube 13 always has high heat exchange efficiency. This makes the reaction process more stable and allows the preparation of trimethylsilyl trifluoromethanesulfonate to proceed continuously and stably, effectively improving the preparation efficiency.

[0017] In this embodiment, as Figure 7 and Figure 8 The scraper mechanism 3 includes a ring block 31, an arc-shaped blade 32, an arc-shaped guide plate 33, and blades 34. Two ring blocks 31 are configured, and the two ring blocks 31 are respectively rotatably mounted on the drive plate 2 and the tube plate 12 near the feed inlet 14. A plurality of arc-shaped blades 32 are fixedly mounted circumferentially between the two ring blocks 31. The inner side of the arc-shaped blade 32 is arc-shaped and rotates and fits against the outer side of the reaction tube 13. An arc-shaped guide plate 33 is fixedly mounted on the arc-shaped blade 32. The outer side of the arc-shaped guide plate 33 rotates and fits against the inner side of the channel 41. A plurality of blades 34 are fixedly mounted circumferentially on the ring block 31 near the drive plate 2.

[0018] Specifically, the curved blades 32 are tilted so that when the cooling medium flows between two adjacent reaction tubes 13, the tilt direction of the curved blades 32 on the two reaction tubes 13 is exactly one facing the water flow direction and the other facing away from the water flow direction. The one facing the water flow direction will be pushed by the water flow, while the one facing away from the water flow direction will not be pushed by the water flow. Since the rotation direction of multiple scraper mechanisms 3 is the same, the rotation direction of the curved blades 32 between two adjacent reaction tubes 13 is different. This tilting arrangement can avoid the cooling medium affecting the rotation of the curved blades 32 when passing through two adjacent reaction tubes 13. That is, the water flow pushes the rotation of the curved blades 32 in the same direction as its rotation, while the other curved blade 32 will not be affected, thus ensuring that each scraper mechanism 3 can rotate normally.

[0019] In this embodiment, the drive plate 2 has a plurality of inlet ports 28 connected to the first infusion chamber 23 on the side near the outlet port 15, and an outlet port 29 connected to the outlet chamber 26 on the side away from the outlet port 15. The second infusion chamber 24 and the third infusion chamber 25 have a plurality of jet holes circumferentially connected on the side away from the outlet port 15.

[0020] It should be noted that during the cooling medium delivery process, the volumes of the first delivery chamber 23, the second delivery chamber 24, and the third delivery chamber 25 gradually decrease. Therefore, there will be a pressure difference when the liquid enters and exits. Hence, spray holes are set in the second delivery chamber 24 and the third delivery chamber 25 so that part of the pressure can be released from the spray holes, while part continues to drive the rotating ring mechanism 22 to rotate. The cooling medium entering the drive plate 2 can enter the reaction shell 11 evenly and comprehensively through the spray holes, so that the cooling medium inlet in the reaction shell 11 is not fixed in one place. This allows the cooling medium to work more comprehensively with the guide plate 4 to flush the reaction tube 13, thereby improving the heat exchange effect of the cooling medium.

[0021] In practice, the cooling medium is introduced into the inlet chamber 16 through the cooling water inlet on the reaction shell 11. The inlet chamber 16 is then filled with cooling water, which enters the first delivery chamber 23 through the inlet port 28. When both the first delivery chamber 23 and the inlet chamber 16 are filled with cooling water, pressure is generated in the first delivery chamber 23. This causes the rotating ring mechanism 22 in the first delivery chamber 23 to rotate, connecting the supply channel 272 in the first delivery chamber 23 with the through hole 226. This allows the cooling medium in the first delivery chamber 23 to enter the second delivery chamber 24 through the supply channel 272. The cooling medium drives the blades 34 located in the liquid supply channel 272 to rotate, which in turn drives the ring block 31 and the arc-shaped blade 32 to rotate. This causes the arc-shaped blade 32 to rotate along the surface of the reaction tube 13. Subsequently, part of the cooling medium entering the second liquid supply chamber 24 is ejected from the nozzle into the reaction shell 11, while the other part remains in the second liquid supply chamber 24. Since the volume of the first liquid supply chamber 23 is larger than that of the second liquid supply chamber 24, the discharge flow rate of the first liquid supply chamber 23 is greater than the capacity of the second liquid supply chamber 24. Consequently, the pressure in the second liquid supply chamber 24 also increases, thereby driving the blades 34 located in the second liquid supply channel 272 to rotate. The rotating ring mechanism 22 in the liquid chamber 24 rotates, causing the cooling medium in the second liquid delivery chamber 24 to flow from the liquid supply channel 272 in the second liquid delivery chamber 24 into the third liquid delivery chamber 25 and drive the blades 34 to rotate. Similarly, part of the cooling medium in the third liquid delivery chamber 25 is sprayed into the reaction shell through the spray hole, and part remains and is pressurized to drive the rotating ring mechanism 22 located in the third liquid delivery chamber 25 to rotate, causing the cooling medium to flow through the liquid supply channel 272 in the third liquid delivery chamber 25 into the discharge chamber 26 and drive the blades 34 to rotate. Subsequently, the cooling medium enters the reaction shell 11 from the outlet 29, and at the same time, the guide plate 4... Under the action of the spiral conveyor inside the reaction shell 1, the reaction tube 13 is heat exchanged. Then, trimethylchlorosilane and trifluoromethanesulfonic acid are pre-mixed in proportion and fed into the reaction shell 11 through the feed port 14. The raw materials are then uniformly fed into multiple reaction tubes 13 through the flow equalization plate to generate trimethylsilyl trifluoromethanesulfonate and hydrogen chloride gas. The reactants are then discharged from the discharge port 15 and fed into the gas-liquid separator to recover the hydrogen chloride gas and send the crude product separated by gas-liquid separation into the thin film evaporator for purification. The purified product is then stored, thus completing the preparation of trimethylsilyl trifluoromethanesulfonate.

[0022] In this embodiment, as Figure 6 The guide block 27 has an open circular cavity 273 inside, the blade 34 extends into the circular cavity 273 and can rotate, the blade 34 protrudes from the opening of the circular cavity 273 and extends into the liquid supply channel 272.

[0023] Specifically, the opening of the guide block 27 is located on its right side, and the rotation direction of the first ring plate 221 and the second ring plate 222 is counterclockwise. The through hole 226 is located on the rotating back side of the first ring plate 221 and the second ring plate 222. Therefore, when the first ring plate 221 and the second ring plate 222 rotate, the through hole will preferentially connect with the liquid supply channel 272 on the side with the opening, so that the cooling medium can directly impact the blade 34 to make it rotate, thereby driving the arc-shaped blade 32 to rotate, thus ensuring that the cooling medium can drive the scraper mechanism 3 to rotate when it flows.

[0024] In summary, when implemented, this invention, through the cooperation of the spiral guide plate 4 and the rotating scraper mechanism 3, allows the cooling medium to form a spiral turbulence within the reaction shell 11 while effectively breaking down the boundary retention layer on the outer wall of the reaction tube 13. This significantly enhances the heat exchange effect on the reaction tube 13, enabling precise control of the reaction temperature and thus improving reaction efficiency and product preparation efficiency. Simultaneously, the scraper mechanism 3, during rotation, can scrape away any scale deposits that may accumulate on the outer wall of the reaction tube 13, ensuring the surface of the reaction tube 13 remains clean. This further ensures that the reaction tube 13 possesses a continuous and stable heat exchange efficiency, thereby guaranteeing the continuous and stable operation of the reactor. Furthermore, by incorporating a multi-stage liquid delivery chamber and a rotating ring mechanism 22 within the drive plate 2, the flow path and jet of the cooling medium are automatically controlled using pressure differential. This allows the cooling medium to flow uniformly along multiple liquid supply channels 272, simultaneously driving the scraper mechanism 3. This eliminates the need for additional driving force to rotate the scraper mechanism 3, effectively saving energy and achieving higher control precision.

[0025] The above description is merely 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 reaction apparatus for preparing trimethylsilyl trifluoromethanesulfonate, characterized in that: The reactor includes a tubular reactor (1), a drive plate (2), a scraper mechanism (3), and a guide plate (4). The tubular reactor (1) includes a reaction shell (11), tube sheets (12), and reaction tubes (13). Two tube sheets (12) are symmetrically fixed on both sides of the tubular reactor (1), and multiple reaction tubes (13) are fixedly arranged between the two tube sheets (12). The two ends of the tubular reactor (1) are respectively provided with an inlet (14) and an outlet (15). The inlet (14) and outlet (15) are connected to the multiple reaction tubes (13). A flow equalization plate is provided on the tube sheet (12) near the inlet (14). The drive plate (2) is... 2) A liquid inlet chamber (16) for conveying cooling medium is formed between the tube plate (12) installed on the side of the reaction shell (11) near the outlet (15) and the tube plate (12) and the reaction shell (11). A scraper mechanism (3) is rotatably arranged between the drive plate (2) and the tube plate (12) near the inlet (14). A spiral guide plate (4) is fixedly arranged inside the reaction shell (11) between the two tube plates (12). The guide plate (4) has multiple channels (41) for the reaction tube (13) to pass through. The diameter of the channel (41) is larger than the outer diameter of the reaction tube (13).

2. The reaction apparatus for preparing trimethylsilyl trifluoromethanesulfonate according to claim 1, characterized in that: The drive plate (2) has multiple mounting holes (21) for the reaction tube (13) to pass through. The drive plate (2) is hollow inside and has three rotating ring mechanisms (22) that are sealed and rotate from the outside to the inside. The three rotating ring mechanisms (22) divide the inside of the drive plate (2) into a first infusion chamber (23), a second infusion chamber (24), a third infusion chamber (25), and an outlet chamber (26) from the outside to the inside. The second infusion chamber (24), the third infusion chamber (25), and the outlet chamber (26) each have multiple guide blocks (27) evenly distributed circumferentially. A spacer plate (271) is fixedly installed between two adjacent guide blocks (27) in the vertical direction and between the two outermost guide blocks (27) in this direction and the inner wall of the drive plate (2). The first infusion chamber (23), the second infusion chamber (24), and the third infusion chamber (25) are each divided into two cavities by the spacer plate (271) inside.

3. The reaction apparatus for preparing trimethylsilyl trifluoromethanesulfonate according to claim 2, characterized in that: The rotating ring mechanism (22) includes a first ring plate (221), a second ring plate (222), an arc-shaped connecting rod (223), a sealing slide plate (224), and a spring (225). The first ring plate (221) and the second ring plate (222) are fixedly connected by an arc-shaped connecting rod (223) to form an annular plate with two openings. The first ring plate (221) and the second ring plate (222) are rotatably disposed in the two cavities respectively. The two ends of the first ring plate (221) and the second ring plate (222) are adjacent to the two spacer plates (271) and the arc-shaped connecting rod (223) respectively. The spacer plate (271) is provided with a through hole for the arc-shaped connecting rod (223) to slide through. A sealing slide plate (224) is fixedly provided at one end of the ring plate (221) adjacent to the other spacer plate (271), and a spring (225) is provided between the sealing slide plate (224) and the spacer plate (271). The inner sides of the ring plate (221) and the ring plate (222) are sealed and rotatedly fitted with the outer side of the adjacent guide block (27). The outer end of the sealing slide plate (24) is sealed and slidably connected to the inner side of the guide block (27) connected to the spacer plate (271).

4. The reaction apparatus for preparing trimethylsilyl trifluoromethanesulfonate according to claim 3, characterized in that: A liquid supply channel (272) is formed between two adjacent guide blocks (27) that are evenly distributed in the same circumference. The multiple liquid supply channels (272) respectively connect the first infusion chamber (23), the second infusion chamber (24), the third infusion chamber (25) and the outlet chamber (26). Both the first ring plate (221) and the second ring plate (222) are provided with a plurality of through holes (226) evenly distributed in the circumferential direction. The first ring plate (221) and the second ring plate (222) can block the liquid supply channel (272) and make the through holes (226) and the liquid supply channel (272) connected by rotation.

5. The reaction apparatus for preparing trimethylsilyl trifluoromethanesulfonate according to claim 4, characterized in that: The scraper mechanism (3) includes a ring block (31), an arc-shaped blade (32), an arc-shaped guide plate (33), and blades (34). There are two ring blocks (31), which are rotatably mounted on the drive plate (2) and the tube plate (12) near the feed inlet (14), respectively. Multiple arc-shaped blades (32) are fixedly mounted on the two ring blocks (31) along the circumferential direction. The inner side of the arc-shaped blade (32) is arc-shaped and rotates and fits against the outer side of the reaction tube (13). An arc-shaped guide plate (33) is fixedly mounted on the arc-shaped blade (32). The outer side of the arc-shaped guide plate (33) rotates and fits against the inner side of the channel (41). Multiple blades (34) are fixedly mounted on the ring block (31) near the drive plate (2) along the circumferential direction.

6. The reaction apparatus for preparing trimethylsilyl trifluoromethanesulfonate according to claim 5, characterized in that: The guide block (27) has a circular cavity (273) with an opening inside. The blade (34) extends into the circular cavity (273) and can rotate. The blade (34) protrudes from the opening of the circular cavity (273) and extends into the liquid supply channel (272).

7. The reaction apparatus for preparing trimethylsilyl trifluoromethanesulfonate according to claim 2, characterized in that: The drive plate (2) has multiple inlet ports (28) connected to the first infusion chamber (23) on the side near the outlet (15), and an outlet port (29) connected to the outlet chamber (26) on the side away from the outlet (15). The second infusion chamber (24) and the third infusion chamber (25) have multiple jet holes circumferentially connected on the side away from the outlet (15).

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