CN-121972482-A - Differential recovery method and system for aircraft dismantling material

CN121972482ACN 121972482 ACN121972482 ACN 121972482ACN-121972482-A

Abstract

The invention provides a differential recovery method and a differential recovery system for aircraft dismantling materials, which belong to the technical field of aircraft dismantling and resource recovery, and the method comprises the following steps that S1, different types of dismantling materials are obtained in the aircraft dismantling process; S2, judging the material property of the disassembled material, grading and shunting the disassembled material according to the material property, S3, judging whether the disassembled material has a surface coating or cladding structure affecting the recovery quality, S4, performing differential pretreatment on the disassembled material to remove or weaken the structure when the surface coating or cladding structure exists, and S5, selecting a corresponding differential recovery processing path according to the material property and the pretreatment result. Aiming at the characteristics of multiple types of aircraft dismantling materials and complex structure, the invention effectively solves the problems of separating a metal surface coating from a composite material and the like through grading and shunting and differential pretreatment, improves the purity and the utilization value of the recovered material, and has good engineering application prospect.

Inventors

CHENG LONG
CHEN TAO
ZHAN XIAOHONG
CHEN JICHENG
Cao pan
CHANG YUE

Assignees

中国航空器材有限责任公司
南京航空航天大学

Dates

Publication Date: 20260505
Application Date: 20260318

Claims (8)

1. The differential recovery method and system for the aircraft dismantling material are characterized by comprising the following steps: step S1, acquiring different types of dismantling materials in the aircraft dismantling process; s2, judging the material properties of the disassembled materials, and grading and distributing the disassembled materials according to the material properties; Step S3, judging whether the disassembled material has a surface coating or a cladding structure which influences the recovery quality; step S4, when the surface coating or cladding structure exists in the disassembled material, carrying out corresponding differential pretreatment on the disassembled material so as to remove or weaken the surface coating or cladding structure; And S5, selecting a corresponding recovery processing path according to the material properties and the pretreatment result of the disassembled material, and performing differential recovery processing on the disassembled material.
2. The method and system according to claim 1, wherein in step S1, the disassembled material includes one or more of an aircraft skin, a bulkhead, a beam, a fastener, a harness cable, and a composite part.
3. The method and system according to claim 1, wherein in step S2, the material property determination includes determining a metallic property, a nonmetallic property, or a composite property of the disassembled material to support selection of a subsequent recycling process path.
4. The method and system according to claim 1, wherein in step S4, when the disassembled material is a metal material having a surface coating, the differential pretreatment includes removing the surface coating to obtain a metal base material having a coating removed.
5. The method and system according to claim 1, wherein in step S4, the removing treatment includes one or more of a heat treatment, a mechanochysical method, and a chemical stripping method.
6. The method and system for differentially recycling an aircraft disassembled material according to claim 1, wherein in the step S5, when the metal material is an aluminum alloy material, the aluminum alloy material with the surface coating removed is subjected to classified recycling treatment for recycling or remanufacturing, and when the disassembled material is a wire harness cable material with a coating structure, the differential pretreatment comprises decoupling treatment of a conductor material and a coating material.
7. The method and system for differential recovery of aircraft disassembled material of claim 6, wherein the decoupling process comprises one or more of a pyrolysis process, a mechanical disruption sorting process, or a selective stripping process. After the decoupling treatment is completed, the obtained copper or copper alloy material is independently recycled.
8. The method and system for differential recovery of aircraft disassembled materials of claim 1, wherein the recovery processing path comprises a metal material recovery path, a composite material recovery path, and a hybrid material centralized processing path. And selecting or switching the recovery processing path according to the material property of the disassembled material and the pretreatment result. The material type, pretreatment mode and recovery processing path of the disassembled material are recorded for recovery process management or material tracing.

Description

Differential recovery method and system for aircraft dismantling material Technical Field The invention relates to the technical field of aircraft disassembly and resource recovery, in particular to an aircraft disassembly material differential recovery method and system adopting differential pretreatment and recovery treatment paths aiming at different material types and structural characteristics thereof in the aircraft disassembly process. Background With the rapid development of the civil aviation transportation industry, a large number of civil airliners gradually enter a retired stage, and aircraft disassembly and material recovery become important links in the aviation industry chain. Retired aircraft generally comprises a plurality of metal materials, nonmetallic materials and composite materials, and has complex structure, various material types and direct influence on the utilization efficiency and economic value of resources due to the recycling quality of disassembled materials. In the existing aircraft disassembling and recycling process, disassembled materials are generally subjected to centralized treatment in a coarser mode, and a differential recycling scheme aiming at different material characteristics and structural forms is lacked. For example, the components such as the aircraft skin, the bulkhead, the beam and the like are mostly made of aluminum alloy materials, and the surfaces of the components are usually coated with anti-corrosion coatings, primers or sealing materials, so that impurities are easily introduced in the subsequent furnace returning or recycling process if the coatings are not effectively removed before recycling, and the purity and the performance of the recycled metal materials are affected. Meanwhile, the wire harness cable materials widely existing in the aircraft are generally composed of copper or copper alloy conductors and plastic coating layers, the conductors and the coating materials are tightly combined, so that effective separation and recovery are difficult to directly conduct after disassembly, and the recovery value of the copper alloy materials is reduced. In addition, various components with different material properties and structural characteristics can be generated in the aircraft disassembly process, the existing recovery mode often lacks system judgment and diversion treatment on material types, surface states and composite structures, and an adaptive recovery process path is difficult to select according to the actual conditions of different materials, so that the problem that high-value materials are processed inefficiently and even recycled in a mixed mode is caused. Therefore, a material recovery method suitable for an aircraft dismantling scene is needed, different types of dismantling materials can be reasonably split before recovery treatment, and corresponding pretreatment steps are introduced for materials with surface coatings or cladding structures, so that differential recovery of the dismantling materials is realized, and the quality and the utilization value of the recovered materials are improved. Disclosure of Invention Aiming at the problems that in the existing aircraft dismantling process, the types of dismantling materials are multiple, the structure is complex, the recycling treatment mode is extensive, and the materials with surface coating or cladding structures are difficult to effectively treat before recycling, so that the purity and the utilization value of the recycled materials are reduced, the invention provides a differential recycling method and a differential recycling system for aircraft dismantling materials. The invention mainly comprises the following steps: Step S1, different types of dismantling materials are obtained in the aircraft dismantling process. And S2, judging the material properties of the disassembled materials, and grading and distributing the disassembled materials according to the material properties. And S3, judging whether the disassembled material has a surface coating or cladding structure affecting the recovery quality. And S4, when the surface coating or cladding structure exists in the disassembled material, carrying out corresponding differential pretreatment on the disassembled material so as to remove or weaken the surface coating or cladding structure. And S5, selecting a corresponding recovery processing path according to the material properties and the pretreatment result of the disassembled material, and performing differential recovery processing on the disassembled material. Further, in step S1, the disassembly material includes one or more of an aircraft skin, a bulkhead, a beam, a fastener, a harness cable, and a composite part. Further, in step S2, the material property determination includes determining a metallic property, a nonmetallic property, or a composite property of the disassembled material to support selection of a subsequent recycling process path. Further, in s