CN-122029022-A - Polymer resin recovery device

Abstract

The purpose of the present invention is to provide a novel polymer resin recovery device for recovering a polymer resin, the degradation of which is suppressed, from a composite material containing a polymer resin. The present invention relates to a polymer resin recovery apparatus for treating a composite material containing a polymer resin with high-pressure hot water and recovering the polymer resin from the composite material, wherein the polymer resin recovery apparatus comprises a heat treatment section for accommodating the composite material and bringing the composite material into contact with the high-pressure hot water, a separation section provided with a 1 st filter member for allowing the polymer resin melted in the heat treatment section to pass therethrough but restricting movement of the composite material and movement of unmelted matter in the heat treatment section, and a water flow generation section for supplying water flow to the separation section.

Inventors

• IKEUCHI YUSUKE
• INAGAKI TAKASHI
• Tomohiko Kitano
• Sen Yayi

Assignees

• 东洋纺株式会社

Dates

Publication Date

20260512

Application Date

20241025

Priority Date

20231026

Claims (20)

1. 1. A polymer resin recovery apparatus for treating a composite material containing a polymer resin with hot water under high pressure and recovering the polymer resin from the composite material, The polymer resin recovery device comprises: a heat treatment unit which accommodates the composite material and brings the composite material into contact with high-pressure hot water; A separation unit provided with a1 st filter member that allows the polymer resin melted in the heat treatment unit to pass therethrough, but restricts movement of the composite material and movement of unmelted matter in the heat treatment unit, and And a water flow generating unit that supplies a water flow to the separating unit.
2. 2. The polymer resin recovery apparatus according to claim 1, wherein, The polymer resin recovery device includes a cooling mechanism that cools the molten polymer resin separated by the separation unit together with high-pressure hot water to solidify the polymer resin.
3. 3. The polymer resin recovery apparatus according to claim 2, wherein, The polymer resin recovery device has a recovery unit for recovering the cured polymer resin.
4. 4. The polymer resin recovery apparatus according to claim 3, wherein, The recovery unit includes a2 nd filter member for filtering the cured polymer resin.
5. 5. The polymer resin recovery apparatus according to claim 1, wherein, The polymer resin recovery device has a hot water supply unit for supplying hot water to the heat treatment unit.
6. 6. The polymer resin recovery apparatus according to claim 5, wherein, The hot water supply unit is provided with a hot water preparation mechanism at an upstream position of the hot water supply unit.
7. 7. The polymer resin recovery apparatus according to claim 1, wherein, The heat treatment section has a heating mechanism.
8. 8. The polymer resin recovery apparatus according to claim 1, wherein, The water flow generating part is a stirring blade arranged on the heat treatment part.
9. 9. The polymer resin recovery apparatus according to claim 1, wherein, The polymer resin recovery device has a discharge unit for discharging the polymer resin melted in the heat treatment unit together with high-pressure hot water.
10. 10. The polymer resin recovery apparatus according to claim 1, wherein, The 1 st filter member is detachable.
11. 11. The polymer resin recovery apparatus according to claim 1, wherein, The 1 st filter member is composed of metal.
12. 12. The polymer resin recovery apparatus according to claim 11, wherein, The 1 st filter member is constituted by a member of at least 1 kind selected from stainless steel and aluminum.
13. 13. The polymer resin recovery apparatus according to claim 1, wherein, The 1 st filter member has a plurality of through holes (a), and an opening area of each through hole (a) is 0.001mm 2 ~200cm 2 .
14. 14. The polymer resin recovery apparatus according to claim 4, wherein, The 2 nd filter member has a plurality of through holes (B), and an opening area of each through hole (B) is 0.001mm 2 ~1cm 2 .
15. 15. The polymer resin recovery apparatus according to claim 1, wherein, The internal volume of the heat treatment part is 0.5L-3000L.
16. 16. The polymer resin recovery apparatus according to claim 3, wherein, The polymer resin recovery device has a plurality of the recovery units.
17. 17. The polymer resin recovery apparatus according to claim 1, wherein, The polymer resin recovery device has a plurality of the heat treatment sections.
18. 18. A method for recovering a polymer resin, wherein, In this recycling method, the polymer resin is recycled from the polymer resin-containing composite material using the polymer resin recycling apparatus according to any one of claims 1 to 17.
19. 19. The method for recycling a polymer resin according to claim 18, wherein, The composite material is an airbag cloth containing silicone, and the polymer resin is polyamide resin or polyester resin.
20. 20. A recycled product, wherein, The recycled product comprising the polyamide-based resin or polyester-based resin obtained by the method according to claim 19 in at least a part of the raw material.

Description

Polymer resin recovery device Technical Field The present invention relates to an apparatus for recovering a polymer resin from a polymer resin-containing composite material and a method for recovering a polymer resin from a polymer resin-containing composite material using the apparatus. Background In recent years, recycling (recycling) of waste and the like has been attracting attention from the viewpoint of reducing environmental load. As a recycling method of the polymer resin, there are chemical recycling in which the polymer resin is decomposed into a monomer and then re-polymerized, material recycling in which the polymer resin is not decomposed into a monomer but re-pelletized by melting, and the like, and from the viewpoint of energy costs, material recycling is preferable. As a device for treating a composite material containing a polymer resin and recovering a raw material, for example, a device having a1 st hydrolysis unit for hydrolyzing an object to be treated containing a polyester resin by exposing the object to a water vapor atmosphere and a2 nd hydrolysis unit for heating the obtained hydrolysate in hot water and hydrolyzing the same is known (patent document 1). Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2015-172114 Disclosure of Invention Problems to be solved by the invention However, in the apparatus disclosed in patent document 1, the polyester resin contained in the composite material is recovered as a hydrolysate (specifically, terephthalic acid). Therefore, the apparatus cannot recover the polymer resin, which is suitable for recycling the material, with suppressed degradation. The present invention has been made in view of the above circumstances, and an object thereof is to provide a novel polymer resin recovery device for recovering a polymer resin, in which degradation is suppressed, from a composite material containing the polymer resin. Solution for solving the problem The present invention capable of solving the problems is as follows. [1] A polymer resin recovery device for treating a composite material containing a polymer resin with high-pressure hot water and recovering the polymer resin from the composite material, wherein the polymer resin recovery device comprises a heat treatment unit for accommodating the composite material and bringing the composite material into contact with the high-pressure hot water, a separation unit comprising a1 st filter member for allowing the polymer resin melted in the heat treatment unit to pass therethrough but restricting the movement of the composite material and the movement of unmelted matter in the heat treatment unit, and a water flow generation unit for delivering a water flow to the separation unit. [2] The polymer resin recovery apparatus according to [1], wherein the polymer resin recovery apparatus has a cooling mechanism that cools the molten polymer resin separated by the separation section together with high-pressure hot water to solidify the polymer resin. [3] The polymer resin recovery device according to [2], wherein the polymer resin recovery device has a recovery section for recovering the cured polymer resin. [4] The polymer resin recovery apparatus according to [3], wherein the recovery unit is provided with a2 nd filter member for filtering the cured polymer resin. [5] The polymer resin recovery apparatus according to any one of [1] to [4], wherein the polymer resin recovery apparatus has a hot water supply unit that supplies hot water to the heat treatment unit. [6] The polymer resin recovery device according to [5], wherein a hot water preparation mechanism is provided upstream of the hot water supply unit. [7] The polymer resin recovery apparatus according to any one of [1] to [6], wherein the heat treatment section has a heating mechanism. [8] The polymer resin recovery device according to any one of [1] to [7], wherein the water flow generating portion is a stirring blade provided in the heat treatment portion. [9] The polymer resin recovery device according to any one of [1] to [8], wherein the polymer resin recovery device has a discharge portion for discharging the polymer resin melted in the heat treatment portion together with high-pressure hot water. [10] The polymer resin recovery device according to any one of [1] to [9], wherein the 1st filtration member is detachable. [11] The polymer resin recovery device according to any one of [1] to [10], wherein the 1 st filter member is made of metal. [12] The polymer resin recovery apparatus according to [11], wherein the 1 st filtration member is constituted by a member of at least 1 kind selected from the group consisting of stainless steel and aluminum. . [13] The polymer resin recovery apparatus according to any one of [1] to [12], wherein the 1 st filter member has a plurality of through holes (A), and an opening area of each through hole (A) is 0.001mm 2~200cm2. [14] The polymer resin recovery appa