A regeneration process of waste polyester textiles by alcoholysis spinning

Abstract

The application discloses a kind of old polyester textile alcoholysis spinning regeneration process, including the following steps, first, old textile scrap is put into reaction tank, then methanol is added to reaction tank to decompose old textile, the product after decomposition is crystallized by cooling, then the crystallization solid and liquid in the reaction tank are entered into tank body, then separation and filtration are carried out by the guide separation mechanism arranged in the tank body, the filtered liquid is discharged from the discharge hopper at the bottom of the tank body, and the crystalline obtained from the top of the tank body is subjected to polymerization and re-spinning processing to obtain fiber;The application combines reaction tank, guide filter, knocking member and heating member, which does not affect the decomposition of old textile scrap, but also improves the filtration efficiency of the crystalline and the remaining liquid generated by decomposition, allows the crystalline to dry quickly and crystallize, and the crystalline after drying is subjected to polymerization and spinning regeneration processing, to improve the overall efficiency of old textile alcoholysis regeneration.

Description

Technical Field

[0001] This invention belongs to the field of polyester textile alcoholysis regeneration technology, specifically relating to an alcoholysis spinning regeneration process for waste polyester textiles. Background Technology

[0002] Recycling waste textiles is of great significance for resource conservation, pollution reduction, and carbon reduction. The recycling and regeneration of waste polyester textiles can be divided into five categories: zero-level recycling, primary recycling, physical recycling, chemical recycling, and energy recovery. Chemical recycling involves using depolymerizing agents under certain conditions to decompose polyester into monomers or oligomers, which are then separated, purified, and repolymerized for spinning. For example, the alcoholysis device for preparing unsaturated resin from recycled PET (publication number CN207391323U) uses a screw-heated feeding method, which maximizes the feed rate into the alcoholysis reactor, reduces energy consumption, and improves efficiency.

[0003] The above-mentioned device filters the crystals and solutions after alcoholysis of textile waste through a filter. However, the filter screen is usually flat. When a lot of crystals accumulate on the surface of the filter screen, it can easily block the filter pores, affecting the separation efficiency of crystals and liquids, thereby reducing the efficiency of subsequent crystallization regeneration spinning. To address this issue, we propose an alcoholysis spinning regeneration process for waste polyester textiles. Summary of the Invention

[0004] The purpose of this invention is to provide a process for recycling waste polyester textiles through alcoholysis spinning, in order to solve the problem of low crystallization and separation efficiency after alcoholysis of textile waste mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a process for the alcoholysis and spinning recycling of waste polyester textiles, comprising the following steps: first, waste textile scraps are placed into a reaction tank, then methanol is added to the reaction tank to decompose the waste textiles, the decomposed products are cooled and crystallized, and then the crystalline solids and liquids in the reaction tank are allowed to enter the tank body, and then separated and filtered by a guiding separation mechanism set in the tank body. The filtered liquid is discharged from the discharge hopper at the bottom of the tank body, while the filtered crystals are taken out from the top of the tank body. The taken-out crystals are polymerized and re-spun to obtain fibers.

[0006] Preferably, the guiding separation mechanism includes a guiding filter bucket, which is vertically installed inside the tank and its upper end is located below the discharge port at the bottom of the reaction tank. An annular collection box is provided at the bottom of the guiding filter bucket, and a heating component is provided on the outer surface of the annular collection box. A plurality of filter holes are distributed on the surface of the guiding filter bucket, and fine holes are distributed on the lower surface of the annular collection box. The heating component includes an inner ring, which is fitted and installed on the inner surface of the annular collection box. An outer ring is fitted and installed on the outer surface of the annular collection box, and a striking component for striking the inner surface of the guiding filter bucket is provided inside the inner ring.

[0007] Preferably, the striking component includes two mounting shafts horizontally installed in an inner ring. A sleeve is fixed to the inner surface of the inner ring. The sleeve is fitted onto the outer end of the mounting shaft and the two are rotatably connected. Gears are fixedly fitted on the two mounting shafts. A fixing plate is fixed to the rear surface of the gears. A striking ball is fixed to the upper end of the fixing plate.

[0008] Preferably, an L-shaped bracket is vertically arranged on the inner surface of the inner ring, a drive cylinder is embedded in the free end of the bracket, a drive piston rod is arranged inside the drive cylinder, a mounting plate is vertically arranged on the upper end of the drive piston rod, and a number of teeth are arranged on both sides of the mounting plate along its height direction, and the teeth distributed on both sides are respectively meshed with two gears.

[0009] Preferably, a heating ring is provided in both the inner ring and the outer ring, an annular base rod is horizontally provided below the outer ring, and multiple support rods are vertically provided on the upper surface of the annular base rod. The upper ends of the support rods are in contact with the lower surface of the annular collection box. Two fixing rings are symmetrically fixed on the annular base rod, and a stand is provided on the surface of the fixing ring.

[0010] Preferably, a stabilizing plate is provided on the lower surface of the outer ring, a telescopic cylinder is vertically arranged in the stabilizing plate, a fixed cylinder is provided on the upper surface of the outer end of the upright, the lower end of the piston rod in the telescopic cylinder extends into the fixed cylinder, and a bolt is provided between the two.

[0011] Preferably, the guide filter includes a conical plate, with a hemispherical shell at the upper end of the conical plate. Filter holes are distributed on the surfaces of both the conical plate and the hemispherical shell, and the lower end of the conical plate is fixed to the upper surface of the annular collection box.

[0012] Preferably, the tank body is provided with a top cover, the reaction tank is fixed to the upper surface of the top cover, and the tank body is provided with a discharge hopper at the bottom.

[0013] Preferably, a driving cleaning component is provided between the top cover and the tank body. The driving cleaning component includes two lead screws vertically mounted on the top cover. The two lead screws are symmetrically located on both sides of the reaction tank and on the outer side of the outer ring. Two nut plates are provided on the upper surface of the outer ring, which are respectively screwed onto the two lead screws. A rotating bearing is provided between the lead screw and the top cover. A motor is provided at the upper end of the lead screw. A friction ring is fixedly sleeved on the outer surface of the outer ring. The lower end of the lead screw passes through the friction ring and protrudes below. The outer circumferential surface of the friction ring contacts the inner wall of the tank body.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) By combining the reaction vessel, guide filter, striking component and heating component, this invention can improve the filtration efficiency of the crystals and residual liquid produced by decomposition without affecting the decomposition of waste textile scraps. It can also allow the crystals to dry and crystallize quickly, and then polymerize and spin regenerate the dried crystals, thereby improving the overall efficiency of alcoholysis regeneration of waste textiles.

[0016] (2) The present invention can heat and dry the collected crystals by designing heating components. At the same time, the support rod vibrates the bottom of the annular collection box up and down, so that the crystals inside the annular collection box are constantly shaken and turned, increasing the heated area of ​​the crystals and improving the drying effect.

[0017] (3) The present invention drives the lead screw to rotate by a motor, thereby driving the nut plate and friction ring to move downward, which can clean the solution adhering to the inner wall of the tank by friction, ensuring the cleanliness of the inner wall of the tank, avoiding the mixing of materials, facilitating the next use of the tank, and the friction ring can be easily disassembled and replaced at any time. Attached Figure Description

[0018] Figure 1 This is an exploded view of the textile alcoholysis and regeneration equipment of the present invention;

[0019] Figure 2 For the present invention Figure 1 Exploded view of the guide separation mechanism;

[0020] Figure 3 For the present invention Figure 2 A schematic diagram of the structure of the striking component;

[0021] Figure 4 For the present invention Figure 2 A bottom view of the structure of the center guide filter hopper;

[0022] Figure 5 For the present invention Figure 1 A cross-sectional view of the heating element.

[0023] Figure 6 For the present invention Figure 6 A schematic diagram of the structure of region A from below;

[0024] Figure 7 For the present invention Figure 1 A schematic diagram of the structure of the central drive cleaning component;

[0025] In the diagram: 1. Tank body; 2. Guiding and separating mechanism; 21. Guiding filter hopper; 211. Conical plate; 212. Hemispherical shell; 213. Filter holes; 22. Annular collection box; 23. Fine holes; 24. Heating component; 241. Inner ring; 242. Outer ring; 243. Heating ring; 244. Annular base rod; 245. Support rod; 246. Fixing ring; 247. Telescopic cylinder; 248. Stand; 249. Stabilizer 25. Fixed plate; 251. Striking component; 252. Mounting shaft; 253. Sleeve; 254. Striking ball; 255. Fixed plate; 256. Mounting plate; 257. Drive cylinder; 258. Gear; 259. Tooth; 250. Bracket; 3. Reaction tank; 4. Top cover; 5. Drive cleaning component; 51. Lead screw; 52. Motor; 53. Rotary bearing; 54. Nut plate; 55. Friction ring; 6. Discharge hopper. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1

[0028] Please see Figures 1-4 This invention provides a technical solution: a process for the alcoholysis and spinning recycling of waste polyester textiles, comprising the following steps: first, waste textile scraps are placed into a reaction tank 3, then methanol is added to the reaction tank 3 to decompose the waste textiles, the decomposed products are cooled and crystallized, and then the crystalline solids and liquids in the reaction tank 3 are allowed to enter a tank body 1, and then separated and filtered by a guide separation mechanism 2 set in the tank body 1. The filtered liquid is discharged from the discharge hopper 6 at the bottom of the tank body 1, while the filtered crystals are taken out from the top of the tank body 1. The taken-out crystals are polymerized and re-spun to obtain fibers.

[0029] In this embodiment, preferably, the guiding separation mechanism 2 includes a guiding filter 21. The guiding separation mechanism 2 can improve the filtration efficiency of crystals generated from the decomposition of waste textile scraps, while avoiding the situation where crystals clog the filter holes 213. The guiding filter 21 is vertically installed in the tank 1 and its upper end is located below the discharge port at the bottom of the reaction tank 3, so that the discharged decomposition products can fall onto the guiding filter 21 for separation. The guiding filter 21 is smaller at the top and larger at the bottom, so that the crystals can fall downwards along the surface of the guiding filter 21 and be separated from the solution at the same time. An annular collection box 22 is provided at the bottom of the guiding filter 21. The annular collection box 22 is circular when viewed from above and has a U-shaped cross-section with the U-shaped opening facing upwards, so as to facilitate the collection of crystals. A heating element 24 is provided on the outer surface of the annular collection box 22, which can conveniently heat and dry the collected crystals, so as to facilitate the subsequent removal of the crystals for polymerization and spinning processing, and reduce the need for subsequent separate drying and crystallization. To address the issue of crystallization, the guide filter 21 has several filter holes 213 distributed on its surface, which can achieve solid-liquid separation of the decomposed material. The lower surface of the annular collection box 22 has fine holes 23, which facilitate the filtration of liquid that enters the annular collection box 22 along with the crystals through the fine holes 23. The heating component 24 includes an inner ring 241, which is fitted and installed on the inner surface of the annular collection box 22. An outer ring 242 is fitted and installed on the outer surface of the annular collection box 22. The inner ring 241 and the outer ring 242 clamp the annular collection box 22, increasing the contact area and enabling rapid heating and drying of the annular collection box 22. The inner ring 241 is equipped with a striking component 25 that taps the inner surface of the guide filter 21. The striking component 25 can be used to vibrate the guide filter 21 as a whole, increasing the downward falling speed of the crystals and preventing the crystals from getting stuck in the filter holes 213, thus affecting the filtration of the solution and improving the separation efficiency of the crystals and the solution.

[0030] In this embodiment, preferably, the striking component 25 includes two horizontally mounted mounting shafts 251 in the inner ring 241. The striking component 25 can achieve continuous vibration of the guide filter 21, preventing crystals from getting stuck in the filter holes 213. A sleeve 252 is fixed on the inner surface of the inner ring 241. The sleeve 252 can support the mounting shafts 251 without affecting their rotation. The sleeve 252 is sleeved on the outer end of the mounting shafts 251 and the two are rotatably connected. A bearing body is embedded between the two to facilitate the rotation of the two mounting shafts 251. Gears 257 are fixedly mounted on the two mounting shafts 251. The mounting shafts 251 can adapt to the rotation of the gears 257 and can support the gears 257. A fixing plate 254 is fixed on the rear surface of the gears 257. As the gears 257 rotate, they can drive the fixing plate 254 to rotate and change position. The upper end of the fixing plate 254 is fixed. A striking ball 253 is provided. As the fixed plate 254 rotates, the striking ball 253 can contact and strike the inner surface of the guide filter hopper 21. The striking force is transmitted to the entire guide filter hopper 21, causing the whole to shake, which facilitates the downward falling of the crystals. An L-shaped bracket 259 is vertically arranged on the inner surface of the inner ring 241. A drive cylinder 256 is embedded in the free end of the bracket 259. The bracket 259 can support and stabilize the drive cylinder 256. A drive piston rod is provided inside the drive cylinder 256. A mounting plate 255 is vertically arranged on the upper end of the drive piston rod. The mounting plate 255 can move up or down with the drive piston rod. Several teeth 258 are arranged on both sides of the mounting plate 255 along its height direction. The teeth 258 distributed on both sides are respectively meshed with two gears 257. As the mounting plate 255 and the teeth 258 move, the gears 257 meshing with the teeth 258 can rotate.

[0031] In summary, during use, waste polyester textile scraps are placed into reaction tank 3, and then an alcoholysis liquid to decompose the textiles is added to reaction tank 3. After the reaction, the textiles decompose and produce crystallized products. The crystallized products and the remaining solution fall onto the guide filter hopper 21 through the discharge port at the bottom of reaction tank 3. The crystals move downwards along the arc surface of the guide filter hopper 21 and finally fall into the annular collection box 22, while the solution falls downwards through the filter holes 213 and fine holes 23. The falling solution is discharged outwards through the discharge hopper 6. While the crystals are being filtered along the guide filter hopper 21, the drive cylinder 256 works. The internal drive piston rod moves upwards, causing the mounting plate 255 and the teeth 258 to move upwards. As the teeth 258 move upwards, the two gears 257 that mesh with the teeth 258 on both sides rotate in opposite directions. The mounting shaft 251 rotates accordingly, driving the fixed... Plate 254 rotates backwards. When mounting plate 255 moves upwards to a suitable position, striking ball 253 contacts the inner surface of guide filter hopper 21. As the drive piston rod retracts, it drives mounting plate 255 and teeth 258 to move downwards. Gear 257 meshing with teeth 258 rotates relative to each other, driving the two fixed plates 254 to rotate relative to each other. Striking ball 253 disengages from guide filter hopper 21. As the process continues, striking ball 253 continuously strikes the inner surface of guide filter hopper 21, causing guide filter hopper 21 to vibrate as a whole. This facilitates the downward movement of crystals and prevents crystals from getting stuck in or clogging filter holes 213, thus improving crystal separation efficiency. At the same time, the collected crystals are heated and dried by heating component 24, improving the efficiency of subsequent crystal processing and indirectly increasing the overall efficiency of the entire waste polyester textile scrap alcoholysis and regeneration process.

[0032] Example 2

[0033] Reference Figure 5 and Figure 6 This is the second embodiment of the present invention, which differs from the previous embodiment in that...

[0034] In this embodiment, preferably, heating rings 243 are provided in both the inner ring 241 and the outer ring 242. The heating rings 243 can heat the inner ring 241 and the outer ring 242, and the heating of both can conduct heat to the annular collection box 22, thereby heating and drying the crystals in the annular collection box 22. An annular bottom rod 244 is horizontally arranged below the outer ring 242, and multiple support rods 245 are vertically arranged on the upper surface of the annular bottom rod 244. The multiple support rods 245 are distributed along the length of the annular bottom rod 244 to increase the uniformity of the striking force on the bottom of the annular collection box 22. The telescopic cylinder 247 can drive the annular bottom rod 244 to move up and down, thereby driving the support rods 245 to push the lower surface of the annular collection box 22 upward, so that the crystals in the annular collection box 22 will bounce and vibrate due to the lifting. The inner ring 241 and outer ring 242 are in contact with each other for heating. The upper end of the support rod 245 contacts the lower surface of the annular collection box 22. Two fixing rings 246 are symmetrically fixed on the annular bottom rod 244 to facilitate the installation and fixing of the upright 248. The upright 248 is Z-shaped on the surface of the fixing ring 246 to facilitate the installation and use with the telescopic cylinder 247. The lower surface of the outer ring 242 is provided with a stabilizing plate 249. The telescopic cylinder 247 is vertically installed in the stabilizing plate 249. The stabilizing plate 249 can provide support and stability for the telescopic cylinder 247. The upper surface of the outer end of the upright 248 is provided with a fixing cylinder. The lower end of the piston rod in the telescopic cylinder 247 extends into the fixing cylinder. The piston rod can drive the fixing cylinder and the upright 248 to move together. Bolts are provided between the two to realize the detachable connection between them.

[0035] In this embodiment, preferably, the guide filter hopper 21 includes a conical plate 211, and a hemispherical shell 212 is provided at the upper end of the conical plate 211. The hemispherical shell 212 is arc-shaped to reduce the adhesion effect of solution and crystals and play a guiding role. Filter holes 213 are distributed on the surface of both the conical plate 211 and the hemispherical shell 212 to facilitate downward filtration of the solution through the filter holes 213. The lower end of the conical plate 211 is fixed to the upper surface of the annular collection box 22. The conical plate 211 is circular when viewed from above, with a small diameter at the upper end and a large diameter at the lower end, which facilitates the movement of crystals downward along the inclined surface of the conical plate 211 after separation from the solution, and prevents them from remaining on the surface of the conical plate 211 and clogging the filter holes 213.

[0036] In summary, during use, the crystals filtered through the guide filter 21 fall into the annular collection box 22. At this time, the crystals are generally damp and need to be heated and dried. At this time, the heating ring 243 works, and the heat is conducted to the surfaces of the inner ring 241 and the outer ring 242, heating the surfaces of both, thereby heating the annular collection box 22. The heat is conducted to the crystals in the annular collection box 22 for heating and drying. At the same time, the telescopic cylinder 247 works, and the internal piston rod extends and retracts, driving the upright frame 248 and the annular bottom rod 244 to move up and down, causing the support rod 245 to continuously vibrate the bottom of the annular collection box 22. This causes the crystals in the annular collection box 22 to bounce and vibrate, constantly changing their position, so that they can more comprehensively contact the surfaces of the inner ring 241 and the outer ring 242 for drying. The dried crystals are easy to remove and use later.

[0037] Example 3

[0038] Reference Figure 7 This is the third embodiment of the present invention, which differs from the previous two embodiments in that...

[0039] In this embodiment, preferably, a top cover 4 is provided on the top of the tank body 1, and the two are detachably connected. The reaction tank 3 is fixed on the upper surface of the top cover 4. A feed inlet is provided on the upper surface of the reaction tank 3, so that textile scraps and solutions can enter the reaction tank 3 through the feed inlet for reaction and decomposition. A discharge hopper 6 is provided at the bottom of the tank body 1 to facilitate the discharge of the separated liquid.

[0040] In this embodiment, preferably, a driving cleaning component 5 is provided between the top cover 4 and the tank body 1. A motor 52 drives the lead screw 51 to rotate, thereby causing the nut plate 54 and friction ring 55 to move downwards. This allows for friction cleaning of the solution adhering to the inner wall of the tank body 1, ensuring the cleanliness of the inner wall and facilitating the next use of the tank body 1. The driving cleaning component 5 includes two lead screws 51 vertically mounted on the top cover 4. The two lead screws 51 are symmetrically located on both sides of the reaction tank 3 and outside the outer ring 242, close to the inner wall of the tank body 1. Two nut plates 54 are respectively screwed onto the two lead screws 51 on the upper surface of the outer ring 242. Due to the cooperation between the two nut plates 54 and the two lead screws 51, the two nut plates 54 are subjected to… The friction ring 55 is not rotated with the lead screw 51, but only moves upward or downward along the lead screw 51. As the lead screw 51 rotates, it can drive the two nut plates 54 to move downward, thereby driving the friction ring 55 to move downward. A rotating bearing 53 is provided between the lead screw 51 and the top cover 4, which does not affect the rotation of the lead screw 51 in place. A motor 52 is provided at the upper end of the lead screw 51. The friction ring 55 is fixedly sleeved on the outer surface of the outer ring 242. The lower end of the lead screw 51 passes through the friction ring 55 and is exposed below. The friction ring 55 is a cotton ring. The outer circumference of the friction ring 55 contacts the inner wall of the tank 1. As the friction ring 55 moves, it performs friction adsorption treatment on the liquid adhering to the inner wall of the tank 1. At the same time, the friction ring 55 is bonded to the outer ring 242, which is convenient for disassembly and assembly.

[0041] In summary, during use, after the crystals from the decomposed textiles separate from the solution, the separated solution falls into the tank 1. During the solid-liquid separation process, the solution may adhere to the inner wall of the tank 1, requiring treatment of the adhered solution. Two motors 52 work simultaneously, driving two lead screws 51 to work simultaneously. The nut plate 54 moves downward as the lead screws 51 rotate, driving the friction ring 55 and the entire guide separation mechanism downward. The friction ring 55 adsorbs and rubs the solution adhering to the inner wall of the tank 1, keeping the inner wall of the tank 1 clean and facilitating the next use of the tank 1. The top cover 4 is easy to disassemble and reassemble at any time, and a new friction ring 55 can be replaced.

[0042] Example 4

[0043] This embodiment is obtained by combining Embodiment 1, Embodiment 2 and Embodiment 3.

[0044] In use, waste polyester waste is decomposed in reaction tank 3. The decomposition products enter tank 1 and are separated by guide separation mechanism 2. During the separation process, the striking component 25 continuously vibrates the guide filter hopper 21, which accelerates the separation speed of crystals without clogging the filter holes 213, thus not affecting the separation effect of the solution through the filter holes 213. The separated crystals fall into the annular collection box 22 and are heated and dried by the heating component 24. The remaining solution is discharged out through the discharge hopper 6. After the solution is discharged, the residual liquid is rubbed and cleaned by the friction ring 55 in the drive cleaning component 5. Finally, the top cover 4 is opened and the crystals in the annular collection box 22 are taken out for subsequent polymerization and spinning recycling processing, which improves the overall alcoholysis recycling efficiency of waste polyester textile scraps.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A process for the alcoholysis spinning and recycling of waste polyester textiles, comprising the following steps, characterized in that: First, waste textile scraps are put into the reaction tank (3), and methanol is added to the reaction tank (3) to decompose the waste textiles. The decomposed products are cooled and crystallized. Then, the crystallized solid and liquid in the reaction tank (3) are allowed to enter the tank body (1). Then, the separation and filtration are carried out by the guide separation mechanism (2) set in the tank body (1). The filtered liquid is discharged from the discharge hopper (6) at the bottom of the tank body (1), and the filtered crystals are taken out from the top of the tank body (1). The taken-out crystals are polymerized and re-spun to obtain fibers. The guiding separation mechanism (2) includes a guiding filter (21), which is vertically installed inside the tank (1) and its upper end is located below the discharge port at the bottom of the reaction tank (3). An annular collection box (22) is provided at the bottom of the guiding filter (21), and a heating component (24) is provided on the surface of the annular collection box (22). Several filter holes (213) are distributed on the surface of the guiding filter (21), and fine holes (23) are distributed on the lower surface of the annular collection box (22). The heating component (24) includes an inner ring (241), which is fitted and installed on the inner surface of the annular collection box (22). An outer ring (242) is fitted and installed on the outer surface of the annular collection box (22), and a striking component (25) for striking the inner surface of the guiding filter (21) is provided inside the inner ring (241). The striking component (25) includes two mounting shafts (251) horizontally mounted in an inner ring (241). A sleeve (252) is fixed on the inner surface of the inner ring (241). The sleeve (252) is sleeved on the outer end of the mounting shaft (251) and the two are rotatably connected. Gears (257) are fixedly mounted on the two mounting shafts (251). A fixing plate (254) is fixed on the rear surface of the gear (257). A striking ball (253) is fixed on the upper end of the fixing plate (254). An L-shaped bracket (259) is vertically arranged on the inner surface of the inner ring (241). A drive cylinder (256) is embedded in the free end of the bracket (259). A drive piston rod is arranged inside the drive cylinder (256). A mounting plate (255) is vertically arranged on the upper end of the drive piston rod. Several teeth (258) are arranged on both sides of the mounting plate (255) along its height direction. The teeth (258) distributed on both sides are respectively meshed with two gears (257). Heating rings (243) are provided in both the inner ring (241) and the outer ring (242). A ring-shaped bottom rod (244) is horizontally arranged below the outer ring (242). Multiple support rods (245) are vertically arranged on the upper surface of the ring-shaped bottom rod (244). The upper end of the support rod (245) is in contact with the lower surface of the ring-shaped collection box (22). Two fixing rings (246) are symmetrically fixed on the ring-shaped bottom rod (244). A stand (248) is provided on the surface of the fixing ring (246).

2. The alcoholysis spinning and regeneration process for waste polyester textiles according to claim 1, characterized in that: A stabilizing plate (249) is provided on the lower surface of the outer ring (242), and a telescopic cylinder (247) is vertically provided in the stabilizing plate (249). A fixing cylinder is provided on the upper surface of the outer end of the upright frame (248). The lower end of the piston rod in the telescopic cylinder (247) extends into the fixing cylinder, and a bolt is provided between the two.

3. The alcoholysis spinning and recycling process for waste polyester textiles according to claim 1, characterized in that: The guide filter hopper (21) includes a conical plate (211), and a hemispherical shell (212) is provided at the upper end of the conical plate (211). Filter holes (213) are distributed on the surfaces of the conical plate (211) and the hemispherical shell (212). The lower end of the conical plate (211) is fixed to the upper surface of the annular collection box (22).

4. The alcoholysis spinning and recycling process for waste polyester textiles according to claim 1, characterized in that: The tank (1) is provided with a top cover (4), and the reaction tank (3) is fixed on the upper surface of the top cover (4).

5. The alcoholysis spinning and regeneration process for waste polyester textiles according to claim 4, characterized in that: A drive cleaning component (5) is provided between the top cover (4) and the tank body (1). The drive cleaning component (5) includes two screw rods (51) vertically mounted on the top cover (4). The two screw rods (51) are symmetrically located on both sides of the reaction tank (3) and outside the outer ring (242). Two nut plates (54) are provided on the upper surface of the outer ring (242) and respectively screwed onto the two screw rods (51). A rotating bearing (53) is provided between the screw rod (51) and the top cover (4). A motor (52) is provided at the upper end of the screw rod (51). A friction ring (55) is fixedly sleeved on the outer surface of the outer ring (242). The lower end of the screw rod (51) passes through the friction ring (55) and protrudes below. The outer circumferential surface of the friction ring (55) contacts the inner wall of the tank body (1).

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