Heat exchange mechanism and perfluoropolyether continuous fluorination pipeline reactor

Abstract

The invention discloses a heat exchange mechanism and a perfluoropolyether continuous fluorination pipeline reactor, and relates to the technical field of heat exchange mechanisms. The heat exchange mechanism comprises a heat exchanger body, and the heat exchanger body comprises a liquid inlet, a liquid outlet and a refrigerant inlet. According to the heat exchange mechanism and the perfluoropolyether continuous fluorination pipeline reactor, during heat exchange in reaction, perfluoropolyether hydrogen ether and fluorine gas in the heat exchange pipe can be mixed conveniently, meanwhile, the fluorine gas above the liquid level of the perfluoropolyether hydrogen ether in the heat exchange pipe can be driven into the perfluoropolyether hydrogen ether, and fluorine gas bubbles are broken; the heat exchange cooling stroke can be conveniently adjusted according to the feeding speed, it can be ensured that the heat exchange time of materials in the cooling section is matched with the heat production intensity, the local temperature is prevented from being out of control, and the reaction efficiency and quality are improved; the corrosion state in the heat exchange tube can be conveniently detected, if corrosion is serious, an external alarm can be used for giving an alarm to remind a maintainer to conduct maintenance and replacement, and safety and reliability are better achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange mechanisms, and particularly to a heat exchange mechanism and a perfluoropolyether continuous fluorination pipeline reactor. Background Art

[0002] Currently in China, the synthesis of perfluoropolyether usually uses hexafluoropropylene oxide as the raw material, and perfluoropolyether is prepared by anionic ring-opening polymerization. However, during the synthesis process, the acyl fluoride end groups of the ring-opening polymerization need to be inertly capped. Due to the reasons of the synthesis process, acyl fluoride groups will be generated at the end groups regardless of the structure of perfluoropolyether during the synthesis. This group is extremely unstable and will react with water to release hydrogen fluoride, while converting into carboxylic acid groups. Both the acyl fluoride group and the carboxyl group are unstable and will decompose starting from the end groups during use. Therefore, before being used as a product, the acyl fluoride groups of perfluoropolyether need to be inertly treated to make them into stable inert groups. In China, common methods such as using catalysts and alkali solutions to remove carbon dioxide are used for the inert treatment of perfluoropolyether hydroether. Although this method has a high reaction rate, high yield, relatively safe raw materials, and the equipment used does not require special customization and is relatively easy to industrialize, the obtained perfluoropolyether has a high impurity content, poor stability, and extremely high requirements for the treatment of three wastes. Combining with the company's advanced fluorine gas preparation process, through adjusting the reaction process, perfluoropolyether with high purity and high stability can be obtained. Using perfluoropolyether hydroether, fluorine gas, etc. as raw materials, a pipeline reactor is used to continuously fluorinate perfluoropolyether hydroether to produce perfluoropolyether base oil products. The fluorination reaction is an exothermic reaction, and a heat exchange mechanism is required to perform heat exchange and cooling operations on the reaction. A plurality of heat exchange tubes are arranged in the pipeline reactor for the reaction.

[0003] However, when the existing heat exchange mechanism and perfluoropolyether continuous fluorination pipeline reactor are in use, perfluoropolyether hydroether and fluorine gas are not mixed sufficiently in the heat exchange tubes. At the same time, fluorine gas in the heat exchange tubes is easily above the liquid level of perfluoropolyether hydroether, which will also affect the mixing effect, and then affect the reaction efficiency and effect; it is not convenient to adjust the cooling stroke of the material according to the feeding speed of the material, which will also affect the reaction efficiency and effect; during the reaction, the hydrogen atoms in perfluoropolyether hydroether may be replaced by the fluorine atoms in fluorine gas to generate products containing corrosive substances such as hydrofluoric acid (HF). Hydrofluoric acid is a strong acid and has strong corrosiveness to the heat exchange tubes. It is not convenient to detect the corrosion effect of the heat exchange tubes, which affects the reaction efficiency and effect, and is not safe and reliable enough. Summary of the Invention

[0004] The purpose of the present invention is to provide a heat exchange mechanism and a perfluoropolyether continuous fluorination pipeline reactor to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A heat exchange mechanism, including a heat exchanger body, the heat exchanger body includes a liquid inlet, a liquid outlet, a refrigerant inlet and a refrigerant outlet, the side wall of the liquid inlet is fixedly connected with a circulation pump, and the other end of the circulation pump is fixedly connected with a first connecting pipe, and the other end of the liquid outlet is fixedly connected with a second connecting pipe.

[0006] A perfluoropolyether continuous fluorination pipe reactor, including a pipe body, a feed inlet, a discharge pipe, a coolant inlet and a coolant outlet, two mounting plates and a plurality of baffle plates are arranged in the pipe body, and a plurality of heat exchange pipes are arranged between the two mounting plates, and further includes a heat exchange mechanism, the other end of the second connecting pipe is fixedly connected with the coolant inlet, and the other end of the first connecting pipe is fixedly connected with the refrigerant outlet; Each of the heat exchange pipes is provided with a mixing mechanism for mixing raw materials and fluorine gas, and the side wall of each heat exchange pipe is provided with an adjusting mechanism for adjusting the heat exchange stroke; The mixing mechanism includes a first working pipe rotatably connected to the end of the heat exchange pipe, and the first working pipe is fixedly connected to the inner wall of the pipe body through a connecting plate. A rotating pipe is connected in the heat exchange pipe through a moving mechanism, and a plurality of stirring plates arranged in an array are fixedly connected to the inner side wall of the rotating pipe. A plurality of triangular blocks arranged in an array are fixedly connected to the side wall of the stirring plate away from the rotating pipe, and the rotation of the rotating pipe is driven by a driving mechanism. A detection mechanism for detecting the corrosion state of the heat exchange pipe is arranged in the pipe body.

[0007] Preferably, the moving mechanism includes a rotating ring rotatably connected to the inner side wall of the heat exchange pipe, and two symmetrically arranged first sleeve rods are fixedly connected to the end of the rotating ring. The side wall of each first sleeve rod is sleeved with a first sleeve, and the other end of the first sleeve is fixedly connected to the end of the rotating pipe. The side wall of each first sleeve is sleeved with a first spring, and a moving rod is arranged on the side wall of the first working pipe. The upper end of the moving rod is fixedly connected with a conical disc, and a fixing ring is fixedly connected to the end of the rotating pipe. The lower end of the moving rod is fixedly connected with a first disc, and a second spring is sleeved on the side wall of the moving rod. A plurality of first conical blocks arranged in an array are fixedly connected to the top of the first disc, and a second conical block is fixedly connected to the bottom of the first working pipe. The rotation of the moving rod is driven by a driving mechanism.

[0008] Preferably, the driving mechanism includes a fixed block fixedly connected to the side wall of the connecting plate. A gear is rotatably connected to the bottom of the fixed block through a rotating shaft. A plurality of slots are formed in the side wall of the rotating shaft, and a plurality of insertion blocks are fixedly connected to the bottom of the moving rod. The insertion blocks are inserted into the slots. Two symmetrically arranged connecting blocks are fixedly connected to the bottom of the fixed block. Two symmetrically arranged guide rods are fixedly connected to the opposite side walls of the two connecting blocks. A slider is sleeved on the side wall of the guide rod, and the slider is fixed to the side wall of the rack. A third spring is sleeved on the side wall of each guide rod. An L-shaped push rod is fixedly connected to the side wall of the rack, and the movement of the push rod is pushed by a pushing mechanism.

[0009] Preferably, the pushing mechanism includes two symmetrically arranged first T-shaped guide rods fixedly connected to the side wall of the mounting plate. A hollow annular cover is sleeved on the side wall of each first T-shaped guide rod. A fourth spring is sleeved on the side wall of each first T-shaped guide rod. A motor is fixedly connected to the bottom of the pipe body. A cam is fixedly connected to the output end of the motor, and the cam can slide at the end of the annular cover.

[0010] Preferably, the adjusting mechanism includes a fixed pipe fixedly connected to the side walls of the mounting plate and the baffle plate. The fixed pipe is sleeved on the side wall of the heat exchange pipe. A moving pipe is slidably connected in the fixed pipe. A first mounting ring is fixedly sleeved on the side wall of the heat exchange pipe. A first spiral groove is formed in the side wall of the first mounting ring. An installation block is fixedly connected to the end of the moving pipe. A first push pin is fixedly connected to the bottom of the installation block. The lower end of the first push pin is inserted into the first spiral groove, and the rotation of the heat exchange pipe is driven by a driving component.

[0011] Preferably, the driving component includes a ring, and the ring is connected to the side wall of the mounting plate through a moving mechanism. A second mounting ring is fixedly sleeved on the side wall of each heat exchange pipe. A second spiral groove is formed in the side wall of the second mounting ring. A plurality of second push pins arranged in an array are fixedly connected to the side wall of the ring, and the second push pins are inserted into the second spiral groove.

[0012] Preferably, the moving mechanism includes two symmetrically arranged second T-shaped guide rods fixedly connected to the side wall of the mounting plate. The ring is sleeved on the side wall of the second T-shaped guide rod. A fifth spring is sleeved on the side wall of each second T-shaped guide rod. A connecting rod is fixedly connected to the side wall of the ring. The other end of the connecting rod is fixedly connected to a second disc, and a rotating fan is rotatably connected to the end of the second disc through a rotating rod.

[0013] Preferably, the detection mechanism includes a second working pipe fixedly inserted at the bottom of the pipe body, and the second working pipe is communicated with the annular cover through a telescopic pipe. The second working pipe is filled with hydraulic oil, and a gravity disk is slidably connected in the second working pipe. The upper end of the second working pipe is fixedly connected with a support block, and a distance sensor is fixedly inserted at the bottom of the support block. The side wall of the annular cover is fixedly connected with an L-shaped pipe, and the other end of the L-shaped pipe is fixedly connected with an installation pipe. A third conical block is connected in the installation pipe through a telescopic mechanism.

[0014] Preferably, the telescopic mechanism includes two symmetrically arranged second sleeve rods fixedly connected to the end of the third conical block, and a second sleeve is sleeved on the side wall of each second sleeve rod. The other end of the second sleeve is fixed to the end of the installation pipe, and a sixth spring is sleeved on the side wall of each second sleeve.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This kind of heat exchange mechanism and perfluoropolyether continuous fluorination pipeline reactor, by setting a mixing mechanism, an adjusting mechanism and a detection mechanism, etc., during the reaction and heat exchange, it is convenient to mix the perfluoropolyether hydroether and fluorine gas in the heat exchange pipe. At the same time, it can drive the fluorine gas above the liquid level of the perfluoropolyether hydroether in the heat exchange pipe into the perfluoropolyether hydroether and break the fluorine gas bubbles; it is convenient to adjust the heat exchange cooling stroke according to the feeding speed, which can ensure that the heat exchange time of the material in the cooling section matches the heat generation intensity, avoid local temperature runaway, and improve the reaction efficiency and quality; it is convenient to detect the corrosion state in the heat exchange pipe. If the corrosion is serious, an alarm can be given through an external alarm to remind the maintenance personnel to carry out maintenance and replacement, which is safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 is a schematic diagram of the overall structure of the perfluoropolyether continuous fluorination pipeline reactor in the present invention;

[0018] Figure 3 is a schematic diagram of the internal structure of the pipe body in the present invention;

[0019] Figure 4 is a schematic diagram of the structure of the adjusting mechanism in the present invention;

[0020] Figure 5 is a schematic diagram of the position of the mixing mechanism in the present invention;

[0021] Figure 6 is a schematic diagram of the structure of the mixing mechanism in the present invention;

[0022] Figure 7 is Figure 3Schematic diagram of the enlarged structure at location A in

[0023] Figure 8 is Figure 4 Schematic diagram of the enlarged structure at location B in

[0024] Figure 9 is Figure 5 Schematic diagram of the enlarged structure at location C in

[0025] Figure 10 is Figure 5 Schematic diagram of the enlarged structure at location D in

[0026] Figure 11 is Figure 7 Schematic diagram of the enlarged structure at location E in

[0027] Figure 12 is Figure 7 Schematic diagram of the enlarged structure at location F in

[0028] Figure 13 is Figure 12 Schematic diagram of the enlarged structure at location G in

[0029] Figure 14 is Figure 9 Schematic diagram of the enlarged structure at location H in

[0030] In the figure: 101, heat exchanger body; 102, circulation pump; 103, first connecting pipe; 104, second connecting pipe; 105, refrigerant inlet; 106, refrigerant outlet; 107, liquid inlet; 108, liquid outlet; 201, rotating ring; 203, first sleeve; 204, first rod sleeve; 205, first spring; 206, fixing ring; 207, moving rod; 208, second tapered block; 209, first disc; 210, first tapered block; 211, second spring; 212, tapered disc; 301, fixing block; 302, rotating shaft; 303, slot; 304, inserted block; 305, gear; 306, connecting block; 307, guide rod; 308, slider; 309, rack; 310, third spring; 311, push rod; 401, annular cover; 402, first T-shaped guide rod; 403, fourth spring; 404, motor; 405, cam; 501, fixed pipe; 502, moving pipe; 503, first mounting ring; 504, first spiral groove; 505, mounting block; 506, first push pin; 601, second mounting ring; 602, second spiral groove; 603, ring; 604, second push pin; 701, second T-shaped guide rod; 702, fifth spring; 703, connecting rod; 704, second disc; 705, rotating rod; 706, rotating fan; 801, second working pipe; 802, telescopic pipe; 803, gravity disc; 804, support block; 805, distance sensor; 806, L-shaped pipe; 807, mounting pipe; 808, third tapered block; 901, second sleeve; 902, second rod sleeve; 903, sixth spring; 1001, pipe body; 1002, feed inlet; 1003, discharge pipe; 1004, coolant inlet; 1005, coolant outlet; 1006, mounting plate; 1007, heat exchange pipe; 1008, baffle plate; 1101, first working pipe; 1102, rotating pipe; 1103, connecting plate; 1104, stirring plate; 1105, triangular block. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1 - 14, the present invention provides a heat exchange mechanism, including a heat exchanger body 101. The heat exchanger body 101 includes a liquid inlet 107, a liquid outlet 108, a refrigerant inlet 105, and a refrigerant outlet 106. A circulating pump 102 is fixedly connected to the side wall of the liquid inlet 107, and the other end of the circulating pump 102 is fixedly connected to a first connecting pipe 103. The other end of the liquid outlet 108 is fixedly connected to a second connecting pipe 104. During the reaction, by starting the circulating pump 102, the coolant after heat exchange in the pipe body 1001 can be pumped back into the heat exchanger body 101 through the coolant outlet 1005 and the first connecting pipe 103 for heat exchange. The heat-exchanged and cooled coolant enters the pipe body 1001 again through the liquid outlet 108 and the coolant inlet 1004, and exchanges heat with the heat exchange pipe 1007 to achieve the cooling of the reaction and ensure the normal progress of the perfluoropolyether fluorination reaction.

[0033] A perfluoropolyether continuous fluorination pipeline reactor includes a pipe body 1001, a feed inlet 1002, a discharge pipe 1003, a coolant inlet 1004, and a coolant outlet 1005. Two mounting plates 1006 and a plurality of baffle plates 1008 are arranged in the pipe body 1001, and a plurality of heat exchange pipes 1007 are arranged between the two mounting plates 1006. It also includes a heat exchange mechanism. The other end of the second connecting pipe 104 is fixedly connected to the coolant inlet 1004, and the other end of the first connecting pipe 103 is fixedly connected to the coolant outlet 1005; Each heat exchange pipe 1007 is provided with a mixing mechanism for mixing the raw material and fluorine gas, and each side wall of the heat exchange pipe 1007 is provided with an adjusting mechanism for adjusting the heat exchange stroke; The mixing mechanism includes a first working pipe 1101 rotatably connected to the end of the heat exchange pipe 1007, and the first working pipe 1101 is fixed to the inner wall of the pipe body 1001 through a connecting plate 1103. A rotating pipe 1102 is connected in the heat exchange pipe 1007 through a moving mechanism. A plurality of stirring plates 1104 arranged in an array are fixedly connected to the inner side wall of the rotating pipe 1102. A plurality of triangular blocks 1105 arranged in an array are fixedly connected to the side wall of the stirring plate 1104 away from the rotating pipe 1102. The rotation of the rotating pipe 1102 is driven by a driving mechanism. A detection mechanism for detecting the corrosion state of the heat exchange pipe 1007 is arranged in the pipe body 1001. During the reaction and heat exchange, it is convenient to mix the perfluoropolyether hydroether and fluorine gas in the heat exchange pipe 1007. At the same time, the fluorine gas above the liquid level of the perfluoropolyether hydroether in the heat exchange pipe 1007 can be driven into the perfluoropolyether hydroether and the fluorine gas bubbles can be broken, making the effect of the mixing reaction better; it is convenient to adjust the heat exchange and cooling stroke according to the feeding speed, and the dynamic adjustment can ensure that the heat exchange time of the material in the cooling section matches the heat generation intensity, avoiding local temperature out of control and improving the reaction efficiency and quality; it is convenient to detect the corrosion state of the heat exchange pipe 1007. If the corrosion is serious, an alarm can be given through an external alarm to remind the maintenance personnel to carry out maintenance and replacement, ensuring the reaction efficiency and effect and being safer and more reliable.

[0034] The moving mechanism includes a rotating ring 201 rotatably connected to the inner side wall of the heat exchange tube 1007. Two symmetrically arranged first sleeve rods 204 are fixedly connected to the end of the rotating ring 201. A first sleeve 203 is sleeved on the side wall of each first sleeve rod 204, and the other end of the first sleeve 203 is fixedly connected to the end of the rotating tube 1102. A first spring 205 is sleeved on the side wall of each first sleeve 203. A moving rod 207 is provided on the side wall of the first working tube 1101. The upper end of the moving rod 207 is fixedly connected to a conical disc 212. A fixing ring 206 is fixedly connected to the end of the rotating tube 1102. The lower end of the moving rod 207 is fixedly connected to a first disc 209. A second spring 211 is sleeved on the side wall of the moving rod 207. A plurality of first conical blocks 210 arranged in an array are fixedly connected to the top of the first disc 209. A second conical block 208 is fixedly connected to the bottom of the first working tube 1101. The rotation of the moving rod 207 is driven by a driving mechanism. By driving the moving rod 207 to rotate through the driving mechanism, the first conical blocks 210 can be driven to rotate by the first disc 209. When the side walls of the first conical blocks 210 abut against the side wall of the second conical block 208, the moving rod 207 and the conical disc 212 can be pushed downward. At the same time, the second spring 211 is compressed. When the first conical blocks 210 pass over the second conical block 208, the moving rod 207 and the conical disc 212 can move downward and reset under the action of the second spring 211. Repeating this process can make the conical disc 212 move up and down reciprocally. When the conical disc 212 moves downward, it can push the fixing ring 206 and the rotating tube 1102 to move. At the same time, the first spring 205 is compressed. When the conical disc 212 moves upward, the rotating tube 1102 can move and reset under the action of the first spring 205. Repeating this process can make the rotating tube 1102 move reciprocally. Moreover, by driving the triangular blocks 1105 to move reciprocally through the stirring plate 1104, at this time, the fluorine gas bubbles floating on the perfluoropolyether hydroether can be broken, making the effect of the mixing reaction better.

[0035] The driving mechanism includes a fixed block 301 fixedly connected to the side wall of the connecting plate 1103. The bottom of the fixed block 301 is rotatably connected to a gear 305 through a rotating shaft 302. A plurality of slots 303 are formed in the side wall of the rotating shaft 302. The bottom of the moving rod 207 is fixedly connected with a plurality of inserting blocks 304. The inserting blocks 304 are inserted into the slots 303. The bottom of the fixed block 301 is fixedly connected with two symmetrically arranged connecting blocks 306. The opposite side walls of the two connecting blocks 306 are fixedly connected with two symmetrically arranged guide rods 307. A slider 308 is sleeved on the side wall of the guide rod 307. The slider 308 is fixed to the side wall of the rack 309. A third spring 310 is sleeved on the side wall of each guide rod 307. The side wall of the rack 309 is fixedly connected with a push rod 311 arranged in an L shape. The movement of the push rod 311 is pushed by a pushing mechanism. The pushing mechanism pushes the push rod 311 to move, thereby pushing the rack 309 to move along the guide rod 307. At the same time, the third spring 310 is compressed. When the annular cover 401 moves and resets in the direction away from the mounting plate 1006, the rack 309 can move and reset under the action of the third spring 310. Repeating like this, the rack 309 can move reciprocally. When the rack 309 moves reciprocally, it can drive the rotating shaft 302 to rotate reciprocally, thereby driving the moving rod 207 and the conical disc 212 to move reciprocally through the inserting blocks 304, and further driving the fixed ring 206 and the rotating tube 1102 to rotate reciprocally. When the rotating tube 1102 rotates reciprocally, it can drive the stirring plate 1104 to rotate reciprocally, thus facilitating the mixing of perfluoropolyether hydroether and fluorine gas in the heat exchange tube 1007.

[0036] The pushing mechanism includes two symmetrically arranged first T-shaped guide rods 402 fixedly connected to the side wall of the mounting plate 1006. A hollow annular cover 401 is sleeved on the side wall of each first T-shaped guide rod 402. A fourth spring 403 is sleeved on the side wall of each first T-shaped guide rod 402. The bottom of the tube body 1001 is fixedly connected with a motor 404. The output end of the motor 404 is fixedly connected with a cam 405. The cam 405 can slide at the end of the annular cover 401. Start the motor 404. The rotation of the motor 404 drives the rotation of the cam 405. When the tip of the cam 405 abuts against the end of the annular cover 401, it can push the annular cover 401 to move in the direction close to the mounting plate 1006. At the same time, the fourth spring 403 is compressed. When the tip of the cam 405 passes over the end of the annular cover 401, the annular cover 401 can move and reset under the action of the fourth spring 403. Repeating like this, the annular cover 401 can move reciprocally.

[0037] The adjusting mechanism includes a fixed pipe 501 fixedly connected to the side walls of the mounting plate 1006 and the baffle plate 1008, and the fixed pipe 501 is sleeved on the side wall of the heat exchange pipe 1007. A moving pipe 502 is slidably connected in the fixed pipe 501. The fixed pipe 501 and the moving pipe 502 are made of heat-insulating materials. A first mounting ring 503 is fixedly sleeved on the side wall of the heat exchange pipe 1007. A first spiral groove 504 is formed in the side wall of the first mounting ring 503. An installation block 505 is fixedly connected to the end of the moving pipe 502, and a first push pin 506 is fixedly connected to the bottom of the installation block 505. The lower end of the first push pin 506 is inserted into the first spiral groove 504. The rotation of the heat exchange pipe 1007 is driven by a driving component. The driving component drives the heat exchange pipe 1007 to rotate. Moreover, the first push pin 506 can slide in the first spiral groove 504, thereby driving the moving pipe 502 to slide into the fixed pipe 501. That is, the faster the feeding speed is, the more the heat exchange pipe 1007 is exposed, that is, the greater the stroke of heat exchange cooling is, so as to facilitate adjusting the heat exchange cooling stroke according to the feeding speed. The dynamic adjustment can ensure that the heat exchange time of the material in the cooling section matches the heat generation intensity, avoid local temperature runaway, and improve the reaction efficiency and quality.

[0038] The driving component includes a circular ring 603, and the circular ring 603 is connected to the side wall of the mounting plate 1006 through a moving mechanism. A second mounting ring 601 is fixedly sleeved on the side wall of each heat exchange pipe 1007, and a second spiral groove 602 is formed in the side wall of the second mounting ring 601. A plurality of second push pins 604 arranged in an array are fixedly connected to the side wall of the circular ring 603, and the second push pins 604 are inserted into the second spiral groove 602. When perfluoropolyether hydroether and fluorine gas enter the pipe body 1001 through the feed port 1002, the moving mechanism can drive the circular ring 603 to move towards the direction close to the mounting plate 1006. At the same time, the fifth spring 702 is compressed. When the circular ring 603 moves, it can drive the heat exchange pipe 1007 to rotate by the sliding of the second push pin 604 in the second spiral groove 602.

[0039] The moving mechanism includes two symmetrically arranged second T-shaped guide rods 701 fixedly connected to the side wall of the mounting plate 1006. The ring 603 is sleeved on the side wall of the second T-shaped guide rod 701. A fifth spring 702 is sleeved on the side wall of each second T-shaped guide rod 701. A connecting rod 703 is fixedly connected to the side wall of the ring 603. The other end of the connecting rod 703 is fixedly connected to a second disc 704. The end of the second disc 704 is rotatably connected to a rotating fan 706 through a rotating rod 705. When perfluoropolyether hydroether and fluorine gas enter the pipe body 1001 through the feed port 1002, they can impact on the rotating fan 706 and cause it to rotate, so as to pre-mix the perfluoropolyether hydroether and fluorine gas, thereby improving the efficiency and effect of the subsequent mixing reaction. At the same time, under the action of the impact force, the rotating fan 706 can be pushed to move towards the mounting plate 1006, so that the ring 603 can be driven to move towards the mounting plate 1006 through the rotating rod 705, the second disc 704 and the connecting rod 703. At the same time, the fifth spring 702 is compressed.

[0040] The detection mechanism includes a second working pipe 801 fixedly inserted at the bottom of the pipe body 1001. The second working pipe 801 is communicated with the annular cover 401 through a telescopic pipe 802. The second working pipe 801 is filled with hydraulic oil, and a gravity disc 803 is slidably connected in the second working pipe 801. A support block 804 is fixedly connected to the upper end of the second working pipe 801, and a distance sensor 805 is fixedly inserted at the bottom of the support block 804. An L-shaped pipe 806 is fixedly connected to the side wall of the annular cover 401, and the other end of the L-shaped pipe 806 is fixedly connected to an installation pipe 807. A third tapered block 808 is connected in the installation pipe 807 through a telescopic mechanism. When the annular cover 401 moves, the third tapered block 808 can be driven to move through the L-shaped pipe 806 and the installation pipe 807. When the third tapered block 808 abuts against the end of the first working pipe 1101, the third tapered block 808 can be pushed to slide into the installation pipe 807. At this time, the internal hydraulic oil can be extruded, thereby pushing the gravity disc 803 to move upward, and enabling the end of the third tapered block 808 to slide along the inner wall of the first working pipe 1101. If the inner wall of the first working pipe 1101 is not corroded, when the third tapered block 808 slides on the inner wall of the first working pipe 1101, the distance sensor 805 detects that the distance of the gravity disc 803 remains unchanged. If the inner wall of the first working pipe 1101 is corroded, its inner diameter will increase. At this time, the moving stroke of the third tapered block 808 moving into the installation pipe 807 becomes smaller, and the upward moving stroke of the gravity disc 803 becomes smaller. At this time, the distance sensor 805 can detect that the distance of the gravity disc 803 becomes larger, so as to facilitate the detection of the corrosion state in the first working pipe 1101 and the heat exchange pipe 1007. If the corrosion is serious, an external alarm can be used for alarming to remind the maintenance personnel to carry out maintenance and replacement, ensuring the efficiency and effect of the reaction, and being safer and more reliable.

[0041] The telescopic mechanism includes two symmetrically arranged second sleeve rods 902 fixedly connected to the end of the third tapered block 808. A second sleeve 901 is sleeved on the side wall of each second sleeve rod 902. The other end of the second sleeve 901 is fixed to the end of the installation pipe 807, and a sixth spring 903 is sleeved on the side wall of each second sleeve 901, which plays a role in guiding and resetting the movement of the third tapered block 808.

[0042] Working principle: When in use, when continuously fluorinating perfluoropolyether, the circulation pump 102 is started, and the heat-exchanged coolant in the pipe body 1001 can be pumped back into the heat exchanger body 101 through the coolant outlet 1005 and the first connecting pipe 103 for heat exchange. The refrigerant enters from the refrigerant inlet 105 and flows out from the refrigerant outlet 106. The heat-exchanged and cooled coolant enters the pipe body 1001 again through the liquid outlet 108 and the coolant inlet 1004, and exchanges heat with the heat exchange pipe 1007 to realize the cooling of the reaction and ensure the normal progress of the perfluoropolyether fluorination reaction.

[0043] When carrying out the reaction, perfluoropolyether hydroether and fluorine gas are introduced into the pipe body 1001 through the feed port 1002. Then, the reaction can be carried out inside the heat exchange pipe 1007. At the same time, the heat exchange mechanism is used to cool the heat exchange pipe 1007. The motor 404 is started, and the rotation of the motor 404 drives the rotation of the cam 405. When the tip of the cam 405 abuts against the end of the annular cover 401, the annular cover 401 can be pushed to move towards the mounting plate 1006. At the same time, the fourth spring 403 is compressed. When the tip of the cam 405 passes over the end of the annular cover 401, the annular cover 401 can move back to its original position under the action of the fourth spring 403. Repeating this process, the annular cover 401 can move back and forth. When the annular cover 401 moves towards the mounting plate 1006, it can abut against the push rod 311, thereby pushing the rack 309 to move along the guide rod 307. At the same time, the third spring 310 is compressed. When the annular cover 401 moves back to its original position away from the mounting plate 1006, the rack 309 can move back to its original position under the action of the third spring 310. Repeating this process, the rack 309 can move back and forth.

[0044] When the rack 309 moves back and forth, it can push the rotating shaft 302 to rotate back and forth, so that the moving rod 207 and the conical disk 212 can be driven to move back and forth through the insertion block 304, and then the fixed ring 206 and the rotating pipe 1102 can be driven to rotate back and forth. When the rotating pipe 1102 rotates back and forth, it can drive the stirring plate 1104 to rotate back and forth, thus facilitating the mixing of the perfluoropolyether hydroether and fluorine gas in the heat exchange pipe 1007. At the same time, when the stirring plate 1104 rotates, it can drive the fluorine gas above the liquid level of the perfluoropolyether hydroether in the heat exchange pipe 1007 into the perfluoropolyether hydroether, making the effect of the mixing reaction better.

[0045] Moreover, when the moving rod 207 rotates, it can drive the first conical block 210 to rotate through the first disk 209. When the first conical block 210 abuts against the side wall of the second conical block 208, it can push the moving rod 207 and the conical disk 212 downward. At the same time, the second spring 211 is compressed. When the first conical block 210 passes over the second conical block 208, the moving rod 207 and the conical disk 212 can move downward and reset under the action of the second spring 211. In this way, the conical disk 212 can move up and down reciprocally. When the conical disk 212 moves downward, it can push the fixed ring 206 and the rotating tube 1102 to move, and at the same time, the first spring 205 is compressed. When the conical disk 212 moves upward, the rotating tube 1102 can move and reset under the action of the first spring 205. In this way, the rotating tube 1102 can move reciprocally. Moreover, by driving the triangular block 1105 to move reciprocally through the stirring plate 1104, at this time, the fluorine gas bubbles floating on the perfluoropolyether hydroether can be broken, making the effect of the mixing reaction better.

[0046] When the perfluoropolyether hydroether and fluorine gas enter the pipe body 1001 through the feed port 1002, they can impact on the rotating fan 706, causing it to rotate, so as to pre-mix the perfluoropolyether hydroether and fluorine gas, thereby improving the efficiency and effect of the subsequent mixing reaction. At the same time, under the action of the impact force, it can push the rotating fan 706 to move in the direction close to the mounting plate 1006, so as to drive the ring 603 to move in the direction close to the mounting plate 1006 through the rotating rod 705, the second disk 704 and the connecting rod 703. At the same time, the fifth spring 702 is compressed. When the ring 603 moves, it can slide through the second push pin 604 in the second spiral groove 602, so as to drive the heat exchange tube 1007 to rotate. Moreover, the first push pin 506 can slide in the first spiral groove 504, so as to drive the moving tube 502 to slide into the fixed tube 501. That is, the faster the feeding speed is, the more the heat exchange tube 1007 is exposed, that is, the greater the stroke of heat exchange cooling is, so as to facilitate adjusting the heat exchange cooling stroke according to the feeding speed. The dynamic adjustment can ensure that the heat exchange time of the material in the cooling section matches the heat generation intensity, avoid local temperature out of control, and improve the efficiency and quality of the reaction.

[0047] When the annular cover 401 moves, it can drive the third conical block 808 to move through the L-shaped pipe 806 and the mounting pipe 807. When the third conical block 808 abuts against the end of the first working pipe 1101, it can push the third conical block 808 to slide into the mounting pipe 807. At the same time, the sixth spring 903 is compressed. At this time, the hydraulic oil inside can be extruded, thereby pushing the gravity disk 803 to move upward, and enabling the end of the third conical block 808 to slide along the inner wall of the first working pipe 1101. If the inner wall of the first working pipe 1101 is not corroded, when the third conical block 808 slides on the inner wall of the first working pipe 1101, the distance sensor 805 detects that the distance of the gravity disk 803 remains unchanged. If the inner wall of the first working pipe 1101 is corroded, it will cause an increase in its inner diameter. At this time, the moving stroke of the third conical block 808 into the mounting pipe 807 becomes smaller, and the upward moving stroke of the gravity disk 803 becomes smaller. At this time, through the distance sensor 805, it can be detected that the distance of the gravity disk 803 becomes larger, so as to facilitate the detection of the corrosion state in the first working pipe 1101 and the heat exchange pipe 1007. If the corrosion is serious, an external alarm can be used to give an alarm to remind the maintenance personnel to carry out maintenance and replacement, ensuring the efficiency and effect of the reaction, and being safer and more reliable.

[0048] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, it will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0049] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A perfluoropolyether continuous fluorination pipeline reactor, comprising a pipe body (1001), a feed inlet (1002), a discharge pipe (1003), a coolant inlet (1004) and a coolant outlet (1005). Two mounting plates (1006) and a plurality of baffle plates (1008) are arranged in the pipe body (1001), and a plurality of heat exchange pipes (1007) are arranged between the two mounting plates (1006). The pipeline reactor further comprises a heat exchange mechanism, and the heat exchange mechanism comprises a heat exchanger body (101). The heat exchanger body (101) comprises a liquid inlet (107), a liquid outlet (108), a refrigerant inlet (105) and a refrigerant outlet (106). A circulation pump (102) is fixedly connected to the side wall of the liquid inlet (107), and the other end of the circulation pump (102) is fixedly connected to a first connecting pipe (103). The other end of the liquid outlet (108) is fixedly connected to a second connecting pipe (104). The other end of the second connecting pipe (104) is fixed to the coolant inlet (1004), and the other end of the first connecting pipe (103) is fixed to the coolant outlet (1005). It is characterized in that: A mixing mechanism for mixing raw materials and fluorine gas is arranged in each of the heat exchange tubes (1007), and an adjusting mechanism for adjusting the heat exchange stroke is arranged on the side wall of each heat exchange tube (1007); The mixing mechanism includes a first working tube (1101) rotatably connected to the end of the heat exchange tube (1007), and the first working tube (1101) is fixed to the inner wall of the tube body (1001) through a connecting plate (1103). A rotating tube (1102) is connected in the heat exchange tube (1007) through a moving mechanism, and a plurality of stirring plates (1104) arranged in an array are fixedly connected to the inner side wall of the rotating tube (1102). A plurality of triangular blocks (1105) arranged in an array are fixedly connected to the side wall of the stirring plate (1104) away from the rotating tube (1102), and the rotation of the rotating tube (1102) is driven by a driving mechanism. A detection mechanism for detecting the corrosion state of the heat exchange tube (1007) is arranged in the tube body (1001); The adjusting mechanism includes a fixed tube (501) fixedly connected to the side walls of the mounting plate (1006) and the baffle plate (1008), and the fixed tube (501) is sleeved on the side wall of the heat exchange tube (1007). A moving tube (502) is slidably connected in the fixed tube (501), and a first mounting ring (503) is fixedly sleeved on the side wall of the heat exchange tube (1007). A first spiral groove (504) is formed in the side wall of the first mounting ring (503). An installation block (505) is fixedly connected to the end of the moving tube (502), and a first push pin (506) is fixedly connected to the bottom of the installation block (505). The lower end of the first push pin (506) is inserted into the first spiral groove (504), and the rotation of the heat exchange tube (1007) is driven by a driving component.

2. The continuous fluorination pipeline reactor of perfluoropolyether according to claim 1, characterized in that: The moving mechanism includes a rotating ring (201) rotatably connected to the inner side wall of the heat exchange tube (1007), and two symmetrically arranged first sleeve rods (204) are fixedly connected to the end of the rotating ring (201). A first sleeve (203) is sleeved on the side wall of each first sleeve rod (204), and the other end of the first sleeve (203) is fixed to the end of the rotating tube (1102). A first spring (205) is sleeved on the side wall of each first sleeve (203), and a moving rod (207) is inserted into the side wall of the first working tube (1101). A conical disc (212) is fixedly connected to the upper end of the moving rod (207), and a fixed ring (206) is fixedly connected to the end of the rotating tube (1102). A first disc (209) is fixedly connected to the lower end of the moving rod (207), and a second spring (211) is sleeved on the side wall of the moving rod (207). A plurality of first conical blocks (210) arranged in an array are fixedly connected to the top of the first disc (209), and a second conical block (208) is fixedly connected to the bottom of the first working tube (1101). The rotation of the moving rod (207) is driven by a driving mechanism.

3. A continuous fluorination pipe reactor for perfluoropolyether according to claim 2, characterized in that: The driving mechanism includes a fixed block (301) fixedly connected to the side wall of the connecting plate (1103). The bottom of the fixed block (301) is rotatably connected to a gear (305) through a rotating shaft (302). A plurality of slots (303) are formed in the side wall of the rotating shaft (302). The bottom of the moving rod (207) is fixedly connected to a plurality of insertion blocks (304). The insertion blocks (304) are inserted into the slots (303). The bottom of the fixed block (301) is fixedly connected to two symmetrically arranged connecting blocks (306). Two symmetrically arranged guide rods (307) are fixedly connected to the opposite side walls of the two connecting blocks (306). A slider (308) is sleeved on the side wall of the guide rod (307). The slider (308) is fixed to the side wall of the rack (309). A third spring (310) is sleeved on the side wall of each guide rod (307). The side wall of the rack (309) is fixedly connected to a push rod (311) arranged in an L shape. The movement of the push rod (311) is pushed by a pushing mechanism.

4. A perfluoropolyether continuous fluorination pipeline reactor according to claim 3, characterized in that: The pushing mechanism includes two symmetrically arranged first T-shaped guide rods (402) fixedly connected to the side wall of the mounting plate (1006). A hollow annular cover (401) is sleeved on the side wall of the first T-shaped guide rod (402). A fourth spring (403) is sleeved on the side wall of each first T-shaped guide rod (402). A motor (404) is fixedly connected to the bottom of the pipe body (1001). The output end of the motor (404) is fixedly connected to a cam (405). The cam (405) can slide at the end of the annular cover (401).

5. A continuous fluorination pipeline reactor for perfluoropolyether according to claim 1, characterized in that: The driving component includes a ring (603). The ring (603) is connected to the side wall of the mounting plate (1006) through a moving mechanism. A second mounting ring (601) is fixedly sleeved on the side wall of each heat exchange pipe (1007). A second spiral groove (602) is formed in the side wall of the second mounting ring (601). A plurality of second push pins (604) arranged in an array are fixedly connected to the side wall of the ring (603). The second push pins (604) are inserted into the second spiral groove (602).

6. The continuous fluorination pipe reactor of perfluoropolyether according to claim 5, wherein: The moving mechanism includes two symmetrically arranged second T-shaped guide rods (701) fixedly connected to the side wall of the mounting plate (1006). The ring (603) is sleeved on the side wall of the second T-shaped guide rod (701). A fifth spring (702) is sleeved on the side wall of each second T-shaped guide rod (701). A connecting rod (703) is fixedly connected to the side wall of the ring (603). The other end of the connecting rod (703) is fixedly connected to a second disc (704). The end of the second disc (704) is rotatably connected to a rotating fan (706) through a rotating rod (705).

7. A continuous fluorination pipe reactor for perfluoropolyether according to claim 1, characterized in that: The detection mechanism includes a second working pipe (801) fixedly inserted at the bottom of the pipe body (1001), and the second working pipe (801) is communicated with the annular cover (401) through a telescopic pipe (802). The second working pipe (801) is filled with hydraulic oil, and a gravity disc (803) is slidably connected in the second working pipe (801). The upper end of the second working pipe (801) is fixedly connected with a support block (804), and a distance sensor (805) is fixedly inserted at the bottom of the support block (804). The side wall of the annular cover (401) is fixedly connected with an L-shaped pipe (806), and the other end of the L-shaped pipe (806) is fixedly connected with an installation pipe (807). A third conical block (808) is connected in the installation pipe (807) through a telescopic mechanism.

8. A continuous fluorination pipeline reactor for perfluoropolyether according to claim 7, characterized in that: The telescopic mechanism includes two symmetrically arranged second sleeve rods (902) fixedly connected to the end of the third conical block (808), and a second sleeve (901) is sleeved on the side wall of each second sleeve rod (902). The other end of the second sleeve (901) is fixed to the end of the installation pipe (807), and a sixth spring (903) is sleeved on the side wall of each second sleeve (901).

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