Assembled rotor and rotating packed bed for polysulfone polymer production

Abstract

The utility model discloses an assembled rotor and a rotating packed bed for producing polysulfone polymers, and relates to the technical field of chemical production equipment. The assembled rotor comprises a base plate and a rotating plate assembly detachably arranged on the base plate, the rotating plate assembly comprises a first rotating plate and a second rotating plate, and the second rotating plate is clamped in the radial direction of the first rotating plate; wherein a first through hole is formed in the first rotating plate; the second rotating plate is provided with a containing cavity and a second through hole communicating with the containing cavity, and a silk screen is arranged in the second through hole. The containing cavity of the rotating plate assembly is filled with the solid base catalyst, the rotating plate assembly rotates at a high speed, liquid-phase materials make full contact with the solid base catalyst, therefore, the requirement for the particle size of the solid base catalyst is not too high, the rotor is of a detachable structure, cleaning and replacement are convenient, and the service life of the rotor is prolonged. Therefore, smooth production is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of chemical production equipment technology, and in particular to an assembled rotor and a rotating packed bed for the production of polysulfone polymers. Background Technology

[0002] Polysulfone polymers, as a class of special polymer materials, are widely used in aerospace, food and medical equipment fields due to their good chemical stability, excellent heat resistance and stable mechanical properties.

[0003] Currently, the commonly used production equipment for polysulfone polymers is a reaction vessel. During preparation, solid raw materials, solid alkali catalysts, and solvents are added to the reaction vessel. By controlling the temperature and stirring speed, a polymer reactant with the target viscosity is obtained. The polymer reactant is then diluted, filtered, crushed, washed, dried, and granulated to obtain the polysulfone product.

[0004] In existing reactors, solid raw materials dissolve in a solvent, while the solid base catalyst remains solid, forming a solid-liquid two-phase reaction system. To improve reaction efficiency, the catalyst particle size should be as fine as possible. Moreover, the fine particle size of the catalyst used in the polymerization system increases the difficulty of filtration equipment in the post-processing stage. Utility Model Content

[0005] The main purpose of this invention is to propose an assembled rotor and a rotating packed bed for the production of polysulfone polymers, aiming to solve the problems of existing production equipment having high requirements for the particle size of solid alkali catalysts and increasing the difficulty of filtration equipment in the post-processing stage.

[0006] To achieve the above objectives, this utility model proposes an assembled rotor, comprising:

[0007] Substrate; and,

[0008] A rotating plate assembly is detachably disposed on the substrate. The rotating plate assembly includes a first rotating plate and a second rotating plate, wherein the second rotating plate is snapped onto the radial side of the first rotating plate.

[0009] The first rotating plate is provided with a first through hole; the second rotating plate is provided with a receiving cavity and a second through hole communicating with the receiving cavity, and a wire mesh is provided in the second through hole.

[0010] In one embodiment, there are multiple first rotating plates, and the multiple first rotating plates are distributed along the axial direction of the substrate;

[0011] There are multiple second rotating plates, which are arranged in a ring, and each second rotating plate is engaged with the radial direction of the multiple first rotating plates.

[0012] In one embodiment, each of the first rotating plates is provided with a card interface in the radial direction, and the open end of the card interface is located at the edge of the first rotating plate, while the closed end is away from the edge of the first rotating plate.

[0013] Each of the first rotating plates has multiple card interfaces, which are arranged in a ring. Along the axial direction of the substrate, the multiple card interfaces on the first rotating plates define multiple card connection channels, which are arranged in a ring.

[0014] The number of the second rotating plates is adapted to the number of the snap-fit ​​channels, and multiple second rotating plates snap onto multiple corresponding snap-fit ​​channels.

[0015] In one embodiment, each of the second rotating plates is provided with a mating port that mates with the card interface, the number of the mating ports being adapted to the number of the first rotating plates, and the plurality of the mating ports being distributed along the axial direction of the substrate.

[0016] In one embodiment, each of the first rotating plates includes a first rotating plate body and a plurality of first partitions. The plurality of first partitions are disposed around the periphery of the first rotating plate body and are arranged in a ring. The gap between two adjacent first partitions forms the card interface.

[0017] Each of the second rotating plates includes a second rotating plate body and a plurality of second partitions. The plurality of second partitions are disposed on one side of the second rotating plate body and are distributed along the axial direction of the substrate. The gap between two adjacent second partitions forms the mating opening.

[0018] In one embodiment, the thickness of the second rotating plate body is adapted to the width of the card interface, and the thickness of the first rotating plate body is adapted to the height of the mating opening; and / or,

[0019] The first partition and the corresponding first rotating plate body are integrally formed, and the second partition and the corresponding second rotating plate body are integrally formed.

[0020] In one embodiment, the first rotating plate is fixed to the base plate by bolts and nuts, and the bottom of the second rotating plate is snapped onto the base plate by a slot.

[0021] In one embodiment, the second rotating plate has a hollow structure, which forms the receiving cavity.

[0022] This invention also proposes a rotating packed bed for the production of polysulfone polymers, comprising a housing and an assembled rotor as described in any of the above claims, wherein the assembled rotor is rotatably disposed within the housing.

[0023] In one embodiment, the rotating packing bed further includes a rotating shaft rotatably disposed at the bottom of the housing, and the base plate is mounted on the rotating shaft.

[0024] In this invention, bisphenol monomer, 4,4'-dichlorodiphenyl sulfone, and a solvent are added to a reactor. A solid alkali is packed into the cavity of a rotating plate assembly, forming a liquid phase mixture in the reactor and a solid phase in the rotating packed bed. The liquid phase in the reactor is heated to the salt-forming temperature and then fed into the rotating packed bed. The rotating plate assembly is controlled to rotate at high speed, generating significant shear force, causing the liquid phase to form filaments or droplets, thus improving the mass transfer efficiency between the liquid and solid phases. The bisphenol monomer in the liquid phase can react more fully with the solid alkali to form bisphenol salts, increasing the reaction rate and shortening the reaction time. The bisphenol salts generated in the rotating packed bed are refluxed back to the reactor, while the heated material in the reactor is continuously fed into the rotating packed bed to participate in the salt-forming reaction. This material circulation between the reactor and the rotating packed bed continues until the salt-forming reaction is complete. The material after the salt-forming reaction in the reactor is heated to the polymerization temperature, allowing the salt-forming material to undergo further polymerization to generate high molecular weight polysulfone. The materials after polymerization are post-processed to obtain polysulfone polymer products.

[0025] Since the solid alkali catalyst is not mixed with the reactants and solvents, but is instead packed in the cavity of the rotating plate assembly, this application does not have excessive requirements on the particle size of the solid alkali catalyst, thus reducing the requirements for the filtration equipment. Furthermore, the rotor in the rotating packed bed of this application adopts a detachable structure, which facilitates cleaning and replacement, thereby ensuring smoother production. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 A schematic diagram of an embodiment of an assembled rotor provided by this utility model;

[0028] Figure 2 for Figure 1 Schematic diagram of the structure of the card connection channel;

[0029] Figure 3 for Figure 1 A schematic diagram of the structure of the first rotating plate in the middle;

[0030] Figure 4 for Figure 1 Schematic diagram of the second rotating plate

[0031] Figure 5 For containing Figure 1 A schematic diagram of the structure of a rotating packing bed with a medium-sized assembled rotor;

[0032] Figure 6 For containing Figure 5 A schematic diagram of a polysulfone polymer production equipment with a rotating packed bed.

[0033] Explanation of icon numbers:

[0034] 1. Reactor; 11. Nitrogen inlet; 12. First feed inlet; 13. Return inlet; 14. Material outlet; 15. Working fluid collection pipe; 16. Circulating pump; 17. Heating device; 18. Stirring device; 19. First exhaust port; 2. Filter; 21. First filtrate collection pipe; 22. Second filtrate collection pipe; 23. Control valve; 24. Second feed inlet; 3. Rotating packed bed; 31. Third shell; 32. Assembled rotor; 321. Base plate; 322. First rotating plate; 323. Second rotating plate; 324. First through hole; 325. Second through hole; 326. Liquid distribution channel; 327. Snap-fit ​​channel; 328. Slot; 329. Bolt; 33. Third feed inlet; 330. First rotating plate body; 331. First partition plate; 332. Snap-fit ​​interface; 333. Perforation; 334. Second rotating plate body; 335. Second partition plate; 336. Mating port; 337. Wire mesh; 338. Receiving cavity; 34. Rotating shaft; 35. Third exhaust port; 36. Salt material collection pipe; 37. Liquid distributor; 371. Spray hole; 4. First cooler; 5. Gas-liquid separator; 51. Exhaust pipe; 52. Return pipe; 6. Separating gravity bed; 61. Fourth shell; 62. Fourth rotor; 63. Fourth feed inlet; 64. Fourth exhaust port; 65. Return port; 7. Second cooler; 8. Return controller; 81. Discharge pipe; 82. Return pipe; 9. Storage tank.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] Please see Figures 1 to 4 This utility model provides an assembled rotor 32, including a base plate 321 and a rotating plate assembly. The rotating plate assembly is detachably disposed on the base plate 321. The rotating plate assembly includes a first rotating plate 322 and a second rotating plate 323. The second rotating plate 323 is snapped into the radial direction of the first rotating plate 322. The first rotating plate 322 is provided with a first through hole 324. The second rotating plate 323 is provided with a receiving cavity 338 and a second through hole 325 communicating with the receiving cavity 338. A wire mesh 337 is disposed in the second through hole 325.

[0040] In the technical solution of this utility model, when producing polysulfone polymer products, a solid alkali is filled into the receiving cavity 338. Bisphenol monomer, 4,4'-dichlorodiphenyl sulfone, and solvent are mixed and heated, then fed into a rotating packed bed 3. The assembled rotor 32 is activated, causing the liquid-phase mixture to break into fine liquid filaments and droplets, effectively improving the liquid-solid two-phase mass transfer efficiency. This allows the bisphenol monomer in the mixture to fully react with the solid alkali to form bisphenol salts. The first through-hole 324 and the second through-hole 325 further improve the liquid-solid two-phase mass transfer efficiency, and the second through-hole 325 facilitates contact between the liquid and solid phases. The wire mesh 337 prevents solid alkali particles from leaving the receiving cavity 338.

[0041] Understandably, see Figure 5The rotating packed bed 3 includes a third housing 31 and the assembled rotor 32. The assembled rotor 32 is rotatably disposed inside the third housing 31. The top of the third housing 31 is provided with a third feed port 33 so that the liquid phase mixture can enter the rotating packed bed 3.

[0042] Furthermore, the first rotating plate 322 has a perforation 333 in the middle and a plurality of first through holes 324 on it. There are multiple first rotating plates 322, which are distributed along the axial direction of the substrate 321, and the perforations 333 on the multiple first rotating plates 322 form a liquid distribution channel 326. The rotating packing bed 3 also includes a liquid distributor 37 disposed on the top of the third housing 31. The liquid inlet end of the liquid distributor 37 forms the third feed port 33, and the liquid outlet end extends into the liquid distribution channel 326.

[0043] By adopting the above technical solution, the liquid mixture is filtered and then fed into the liquid distributor 37, and then flows out of the liquid distributor 37 to contact the rotating plate assembly. The setting of the liquid distributor 37 effectively improves the mass transfer efficiency of the liquid-solid two phases.

[0044] Specifically, in the top-to-bottom direction, the liquid distributor 37 includes an inlet end, a connecting section, and an outlet section connected in sequence. The inlet end is located outside the third housing 31, the connecting section is connected to the top of the third housing 31, and the outlet section is located inside the liquid distribution channel 326. The outlet section has a spray hole 371 on its pipe wall, and the distance between the bottom of the outlet section and the upper surface of the substrate 321 is h, where 5mm ≤ h ≤ 10mm.

[0045] By adopting the above technical solution, the heated liquid mixture is filtered by filter 2 and then enters the liquid distributor 37 through the liquid inlet end, and is sprayed out through the spray hole 371, so that the mixture can fully contact the rotating plate assembly to ensure the mass transfer efficiency of the liquid and solid phases.

[0046] Further, there are 5 to 7 first rotating plates 322, and the distance between two adjacent first rotating plates 322 is H, 3mm≤H≤5mm; the second rotating plate 323 has a hollow structure, the hollow structure forms the receiving cavity 338, and the second rotating plate 323 is provided with a plurality of second through holes 325, each of which is provided with a wire mesh 337; there are multiple second rotating plates 323, the multiple second rotating plates 323 are arranged in a ring, and each second rotating plate 323 is engaged in the radial direction of the multiple first rotating plates 322; wherein, the included angle between two adjacent second rotating plates 323 is α, 25°≤α≤35°.

[0047] By adopting the above technical solution, the second rotating plate 323 has a hollow structure, which facilitates the filling of solid alkali catalyst. The second rotating plate 323 is provided with multiple second through holes 325, and the receiving cavity 338 is connected to the multiple second through holes 325. The second through holes 325 are connected to the inner cavity of the third shell 31, thus facilitating contact between the solid alkali catalyst and the mixture phase inside the third shell 31. A wire mesh 337 is provided in the second through holes 325, which prevents the solid alkali catalyst from leaving the receiving cavity 338. With an angle of 25°≤α≤35°, the rotating plate assembly can sufficiently shear the atomized liquid phase, increasing the contact opportunity between the liquid and the solid alkali and improving the mass transfer efficiency between the liquid and solid phases.

[0048] Furthermore, each of the first rotating plates 322 is provided with a card interface 332 in the radial direction, and the open end of the card interface 332 is located at the edge of the first rotating plate 322, while the closed end of the card interface 332 is away from the edge of the first rotating plate 322; there are multiple card interfaces 332 on each of the first rotating plates 322, and the multiple card interfaces 332 are arranged in a ring; along the axial direction of the substrate 321, the multiple card interfaces 332 on the first rotating plates 322 are connected to form a card-attaching channel 327, and the card-attaching channel 327 is connected to form a card-attaching channel 327. There are multiple channels 327, and the multiple snap-fit ​​channels 327 are arranged in a ring. The number of second rotating plates 323 is adapted to the number of snap-fit ​​channels 327, and the multiple second rotating plates 323 snap onto the multiple corresponding snap-fit ​​channels 327. Each second rotating plate 323 is provided with a mating port 336 that mates with the snap-fit ​​interface 332. The number of mating ports 336 is adapted to the number of first rotating plates 322, and the multiple mating ports 336 are distributed along the axial direction of the substrate 321.

[0049] Specifically, each of the first rotating plates 322 includes a first rotating plate body 330 and a plurality of first partitions 331. The plurality of first partitions 331 are disposed around the periphery of the first rotating plate body 330 and are arranged in a ring. The gap between two adjacent first partitions 331 forms the card interface 332. Each of the second rotating plates 323 includes a second rotating plate body 334 and a plurality of second partitions 335. The plurality of second partitions 335 are disposed on one side of the second rotating plate body 334 and are distributed along the axial direction of the substrate 321. The gap between two adjacent second partitions 335 forms the mating opening 336.

[0050] By adopting the above technical solution, when the second rotating plate 323 is engaged with the first rotating plate 322, the body 334 of the second rotating plate is engaged into the corresponding card interface 332, and the body 330 of the first rotating plate is engaged into the corresponding mating port 336. In this way, the second rotating plate 323 is more stably engaged with the first rotating plate 322.

[0051] It is understood that the thickness of the second rotating plate body 334 is adapted to the width of the card interface 332, and the thickness of the first rotating plate body 330 is adapted to the height of the mating port 336; the first partition 331 and the corresponding first rotating plate body 330 are integrally molded structures, and the second partition 335 and the corresponding second rotating plate body 334 are integrally molded structures; the material of the first rotating plate 322 and the second rotating plate 323 can be polyetheretherketone (PEEK), and other corrosion-resistant materials can also be used as needed. In the technical solution of this application, the first rotating plate 322 and the second rotating plate 323 are connected by a snap-fit ​​connection, which facilitates cleaning and replacement to ensure the smooth progress of the reaction.

[0052] Furthermore, the first rotating plate 322 is fixed to the base plate 321 by bolts 329 and nuts, and the bottom of the second rotating plate 323 is snapped onto the base plate 321 by a slot 328.

[0053] By adopting the above technical solution, the bottom of the second rotating plate 323 can be inserted into the slot 328 on the substrate 321 to achieve radial positioning of the rotating plate assembly; and the first rotating plate 322 located at the bottom of the rotating plate assembly is provided with a connecting hole, and the substrate 321 is provided with a fixing hole that matches the connecting hole. The bolt 329 passes through the connecting hole and the fixing hole in sequence, and the nut is screwed on the bolt 329 to achieve axial fixation of the rotating plate assembly.

[0054] It is understood that the substrate 321 is provided with multiple slots 328, the number of which matches the number of the second rotating plates 323. The multiple slots 328 are arranged in a ring, and the size of the slots 328 matches the size of the bottom of the second rotating plates 323, so that the bottom of the second rotating plates 323 can be inserted into the corresponding slots 328. There are multiple connecting holes arranged in a ring, and the number and distribution of the fixing holes match the number and distribution of the connecting holes. The polysulfone polymer production equipment also includes a rotating shaft 34, which is rotatably disposed at the bottom of the third housing 31. The substrate 321 is mounted on the rotating shaft 34, which is connected to a motor. The motor drives the rotating shaft 34 to rotate, thereby realizing the rotation of the rotor.

[0055] Furthermore, the third shell 31 has a hollow cylindrical structure with a diameter of D1, where 850mm ≤ D1 ≤ 950mm; the first rotating plate 322 has an annular structure with an outer ring diameter of D2 and an inner ring diameter of D3, the area enclosed by the inner ring forming the perforation 333; wherein 800mm ≤ D2 ≤ 900mm, 20mm ≤ D3 ≤ 50mm; the thickness of the first rotating plate 322 is d1, the thickness of the second rotating plate 323 is d2, the height of the receiving cavity 338 is d0, where 2mm ≤ d1 ≤ 24mm, 2mm ≤ d2 ≤ 12mm, 0.5mm ≤ d0 ≤ 10mm; the aperture of the first through hole 324 and the second through hole 325 is 5-10mm, the aperture of the wire mesh 337 is 200-400 mesh, and the particle size of the solid alkali filled in the receiving cavity 338 is 80-120 mesh.

[0056] Furthermore, the porosity of the rotating plate assembly is φ, φ = V / V0, where V is the sum of the volumes of the first through hole 324 and the second through hole 325 on the rotating plate assembly, and V0 is the volume of the rotating plate assembly, with 0.80 ≤ φ ≤ 0.95.

[0057] By adopting the above technical solution and further controlling the volume of the first through hole 324 and the second through hole 325 on the transfer plate assembly, the mass transfer efficiency of the liquid-solid two phases can be guaranteed.

[0058] See Figure 6 This utility model also proposes a polysulfone polymer production device based on supergravity, including a reactor 1, a filter 2, and a rotating packed bed 3. The reactor 1 has a nitrogen inlet 11, a first feed inlet 12, and a return inlet 13 at its upper part. A working fluid outlet pipe 15 is located at the bottom of the reactor 1. A heating device 17 is installed on the reactor 1. A second feed inlet 24 is located at the upper part of the filter 2, and the second feed inlet 24 is connected to the outlet end of the working fluid outlet pipe 15. The filter 2 is provided with a first filtrate collection pipe 21 and a second filtrate collection pipe 22 at its bottom. Both the first filtrate collection pipe 21 and the second filtrate collection pipe 22 are provided with control valves 23. The discharge end of the second filtrate collection pipe 22 is connected to the return port 13. The top of the third housing 31 is provided with a third inlet 33 connected to the discharge end of the first filtrate collection pipe 21. The bottom of the third housing 31 is provided with a salt-forming material collection pipe 36 connected to the return port 13.

[0059] In this invention, bisphenol monomer, 4,4'-dichlorodiphenyl sulfone, and solvent are added to reactor 1 through the first feed port 12. Solid alkali is filled into the receiving cavity 338. Nitrogen gas enters reactor 1 through nitrogen inlet 11, ensuring the entire system is under nitrogen protection. Heating device 17 is activated to heat the materials in reactor 1. When the temperature reaches 80–100°C, it is maintained for 20–40 minutes. Stirring is performed during heating and maintaining the temperature to ensure the bisphenol monomer and 4,4'-dichlorodiphenyl sulfone dissolve sufficiently in the solvent, forming a liquid mixture. The liquid mixture in reactor 1 is further heated and stirred until it reaches 120–150°C.

[0060] The control valve 23 on the first filtrate collection pipe 21 is kept open, and the control valve 23 on the second filtrate collection pipe 22 is kept closed. The mixture in the reactor 1 with a temperature of 120-150℃ is sent into the filter 2 through the working fluid collection pipe 15. The filtrate obtained after filtration is sent into the rotating packed bed 3 through the first filtrate collection pipe 21. The assembled rotor 32 is controlled to rotate at a speed of 1000-3000 r / min. The high-speed rotation of the rotor generates a large shear force, which breaks the liquid phase mixture into fine liquid filaments and droplets, effectively improving the liquid-solid two-phase mass transfer efficiency, increasing the reaction rate, and shortening the reaction time. This allows the bisphenol monomer in the mixture to react more fully with the solid alkali to form bisphenol salt. The material after the salt formation reaction in the rotating packed bed 3 is collected through the salt material collection pipe 36 and returned to the reactor 1. The temperature of the material in the reactor 1 is controlled at 120-150℃. The heated material in the reactor 1 is sent to the filter 2, filtered, and then sent back to the rotating packed bed 3, and then returned to the reactor 1. This cycle continues until the salt formation reaction is completed.

[0061] After the salt formation reaction is completed, the control valve 23 on the first filtrate collection pipe 21 is closed, while the control valve 23 on the second filtrate collection pipe 22 is open. The material after the salt formation reaction in the reactor 1 is heated, and stirring is carried out during the heating process, so that the material after the salt formation reaction in the reactor 1 is heated to 160-230°C, so that the bisphenol salt and 4,4'-dichlorodiphenyl sulfone undergo polymerization to form a polymer. The material after the polymerization reaction is sent to the filter 2. The filtrate obtained after filtration is collected through the second filtrate collection pipe 22 and returned to the reactor 1. The temperature of the material in the reactor 1 is controlled at 160-230°C. The material after the salt formation reaction in the reactor 1 undergoes polymerization reaction. The material after polymerization reaction in the reactor 1 is sent to the filter 2. After filtration, it is returned to the reactor 1. This cycle continues until the viscosity of the material in the reactor 1 reaches the target viscosity (2000-10000 mPa·s), and the polymerization reaction ends.

[0062] The material after polymerization in reactor 1 is taken out and post-processed, including crushing, washing, drying and granulation, to obtain polysulfone polymer products.

[0063] Understandably, the entire system operates under nitrogen protection throughout the production process. The filter pores in filter 2 have a mesh size of 200-300 mesh. A stirring device 18 is installed inside reactor 1, and a material outlet 14 is located at the bottom of reactor 1 to remove the polymerized material. Control valves 23 are installed on both the first feed inlet 12 and the material outlet 14. The corresponding control valve 23 is opened when feeding or removing the product; it is closed after feeding or when product removal is not required. A viscosity detection device is installed inside reactor 1 to monitor in real time whether the viscosity of the polymerized material in reactor 1 reaches the target value. The solvent can be one of dimethyl sulfoxide, N,N-dimethylformamide, N,N-dimethylacetamide, and N-methylpyrrolidone; the bisphenol monomer can be one of bisphenol A, bisphenol S, and hydroquinone. The amount of bisphenol monomer used is 160-185 kg, the amount of 4,4'-dichlorodiphenyl sulfone used is 200-215 kg, the amount of solid alkali used is 80-90 kg, and the amount of solvent used is 500-600 L.

[0064] Specifically, the rotating packed bed 3 is located above the reactor 1, and the filter 2 is located above the rotating packed bed 3; a circulation pump 16 is installed on the working fluid collection pipe 15.

[0065] By adopting the above technical solution, the circulating pump 16 is used to circulate the materials during the salt formation reaction stage and the polymerization reaction stage, thereby achieving better product production. The filter 2 is located above the rotating packed bed 3 so that the filtrate can flow back to the rotating packed bed 3 smoothly during the salt formation reaction stage; the rotating packed bed 3 is located above the reactor 1 so that the material after the salt formation reaction in the rotating packed bed 3 can flow back to the reactor 1 smoothly during the salt formation reaction stage.

[0066] Furthermore, the polysulfone polymer production system also includes a salt-forming gas emission section, which includes a first cooler 4 and a gas-liquid separator 5 connected to the first cooler 4; the feed inlet of the first cooler 4 is connected to the third exhaust port 35 at the top of the third housing 31 via a pipe.

[0067] Specifically, the first cooler 4 is located above the rotating packed bed 3, and the gas-liquid separator 5 is located between the first cooler 4 and the rotating packed bed 3; the top of the gas-liquid separator 5 is provided with an exhaust pipe 51, and the bottom is provided with a return pipe 52 connected to the return port 13.

[0068] By adopting the above technical solution, the solid alkali is sodium carbonate or potassium carbonate. The carbon dioxide gas and a small amount of solvent generated during the salt formation reaction are discharged through the third exhaust port 35. After being cooled by the first cooler 4, they enter the gas-liquid separator 5. The separated carbon dioxide gas is discharged through the exhaust pipe 51, and the separated liquid solvent is returned to the reaction vessel 1 through the return pipe 52 to ensure the amount of solvent used in the reaction system.

[0069] Understandably, a carbon dioxide detector is installed on the exhaust pipe 51 to detect in real time whether carbon dioxide gas is generated in the rotating packed bed 3. When carbon dioxide gas is no longer discharged from the rotating packed bed 3, the salt formation reaction ends.

[0070] Furthermore, the polysulfone polymer production system also includes a polymerization gas emission section, which includes a separation gravity bed 6 disposed above the reactor 1. The fourth feed port 63 at the bottom of the separation gravity bed 6 is connected to the first exhaust port 19 at the top of the reactor 1 via a pipe, and the top of the separation gravity bed 6 is provided with a fourth exhaust port 64.

[0071] By adopting the above technical solution, when the material in the reactor 1 undergoes a polymerization reaction, the generated water vapor is discharged through the first exhaust port 19. When the water vapor is discharged, it carries a small amount of solvent. The water vapor containing a small amount of solvent enters the separation gravity bed 6. The rotor of the separation gravity bed 6 rotates at a speed of 800-1000 r / min, so that the gas and liquid are separated more fully. After separation, the water vapor is discharged through the fourth exhaust port 64, and the solvent can be returned to the reactor 1 through the first exhaust port 19.

[0072] It is understood that the separating gravity bed 6 includes a fourth housing 61 and a fourth rotor 62 disposed within the fourth housing 61. The distance S1 between the outer sidewall of the fourth rotor 62 and the inner sidewall of the fourth housing 61 is 40-60 mm. The fourth rotor 62 includes a corrugated plate with multiple through-hole structures to improve the gas-liquid separation effect. There are multiple fourth rotors 62, which are mounted on a shaft. The drive shaft rotates, which in turn drives the fourth rotors 62 to rotate.

[0073] Furthermore, the polymerization gas emission section also includes a second cooler 7, a reflux controller 8, and a storage tank 9. The second cooler 7 is disposed above the separation gravity bed 6, the reflux controller 8 is located between the second cooler 7 and the separation gravity bed 6, and the storage tank 9 is located below the reflux controller 8. The inlet of the second cooler 7 is connected to the fourth exhaust port 64 via a pipe, and the outlet of the second cooler 7 is connected to the inlet of the reflux controller 8 via a pipe. The outlet of the reflux controller 8 is provided with a reflux pipe 82 and a discharge pipe 81. The storage tank 9 is connected to the outlet of the discharge pipe 81, and the outlet of the reflux pipe 82 is connected to the reflux port 65 at the top of the separation gravity bed 6.

[0074] By adopting the above technical solution, the water vapor discharged through the fourth exhaust port 64 enters the second cooler 7. After being cooled, it forms liquid water. Part of the liquid water is transported to the storage tank 9 through the discharge pipe 81, and the remaining liquid water is returned to the separation gravity bed 6 through the return pipe 82 to countercurrent with the rising gas phase in the separation gravity bed 6, so as to improve the gas-liquid separation effect.

[0075] Understandably, the reflux controller 8 is designed to facilitate adjusting the reflux ratio of liquid water according to production needs, i.e., adjusting the mass of liquid water refluxed to the separation gravity bed 6. A vacuum is maintained in the storage tank 9 to allow the entry of liquid water.

[0076] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An assembled rotor, characterized by, The application relates to a rotary filler bed, which comprises the following components: a base plate; a rotary plate assembly, which is detachably arranged on the base plate and comprises a first rotary plate and a second rotary plate, the second rotary plate being clamped in the radial direction of the first rotary plate; wherein the first rotary plate is provided with a first through hole; the second rotary plate is provided with a receiving cavity and a second through hole which is in communication with the receiving cavity, and a wire screen is arranged in the second through hole. The first rotary plate is a plurality of first rotary plates which are distributed along the axial direction of the base plate.

2. The modular rotor of claim 1, wherein, The second rotary plate is a plurality of second rotary plates which are annularly distributed, and each second rotary plate is clamped in the radial direction of the first rotary plates. Each first rotary plate is provided with a clamping port in the radial direction, the clamping ports are a plurality of clamping ports which are annularly distributed, and the opening end of each clamping port is at the edge of the first rotary plate and the closing end is away from the edge of the first rotary plate.

3. The modular rotor of claim 2, wherein, Along the axial direction of the base plate, the clamping ports on the first rotary plates define clamping channels, and the clamping channels are a plurality of clamping channels which are annularly distributed. The number of the second rotary plates is matched with the number of the clamping channels, and the second rotary plates are clamped on the corresponding clamping channels. Each second rotary plate is provided with a matching port which is matched with the clamping port, the number of the matching ports is matched with the number of the first rotary plates, and the matching ports are distributed along the axial direction of the base plate.

4. The modular rotor of claim 3, wherein, Each first rotary plate comprises a first rotary plate body and a plurality of first partition plates, the first partition plates are arranged on the periphery of the first rotary plate body, and the first partition plates are annularly distributed, and the gap between two adjacent first partition plates forms the clamping port.

5. The modular rotor of claim 4, wherein, Each second rotary plate comprises a second rotary plate body and a plurality of second partition plates, the second partition plates are arranged on one side of the second rotary plate body, and the second partition plates are distributed along the axial direction of the base plate, and the gap between two adjacent second partition plates forms the matching port. The thickness of the second rotary plate body is matched with the width of the clamping port, the thickness of the first rotary plate body is matched with the height of the matching port; and / or 6. The modular rotor of claim 5, wherein, The first partition plates and the corresponding first rotary plate body are in one-piece structure, and the second partition plates and the corresponding second rotary plate body are in one-piece structure. The bottom of the second rotary plate is clamped on the base plate through a clamping groove, and the first rotary plate is fixed on the base plate through bolts and nuts.

7. The modular rotor of claim 1, wherein The second rotary plate is in a hollow structure, and the hollow structure forms the receiving cavity.

8. The modular rotor of claim 1, wherein, The application further relates to a rotary filler bed which comprises a shell and the assembled rotor as claimed in any one of claims 1 to 8, and the assembled rotor is rotatably arranged in the shell.

9. A rotating packed bed for the production of polysulfone-based polymers, characterized in that, The rotary filler bed further comprises a rotating shaft which is rotatably arranged at the bottom of the shell, and the base plate is mounted on the rotating shaft.

10. The rotating packed bed for producing a polysulfone-based polymer according to claim 9, wherein ​

Images