EPA-108-XA02

108

2,500 千元

補助及獎勵回收清除處理暨再生利用

2019/01/01

2019/11/30

郭政柏

回收基管會

苑守成

財團法人工業技術研究院

廢棄物管理

聚氨酯、化學回收、再利用

Polyurethane, Chemical recycling, Reuse

郭信良

林其瑞

03-5732795#

RayLin@itri.org.tw

國內尚未建立廢棄聚氨酯泡棉回收再生機制，因此從廢棄汽機車所拆解出之泡棉目前以車輛粉碎殘留物 (automotive shredded residues，ASR)形式直接進行焚化處理，對於環境衝擊性大，未來需發展循環再利用的模式。本計畫利用化學回收技術將廢車輛坐墊PU泡棉降解成多元醇，共評估了5種國內汽車大廠(Nissan、Toyota、Ford、Mitsubishi、Honda)的19種暢銷車款(2000年左右出產之報廢車)、1款機車大廠(Yamaha)車款、2種國內坐墊生產商(新三興、友聯)共4款汽車坐墊不良品、3種國內坐墊生產商(友聯、慶復隆、建上)共3款機車坐墊不良品，以及1次ASR取樣之PU組成分析。其中汽車的多元醇組成幾乎都使用1至2種PPG(使用單一Mw 4500-6500 PPG，或是使用Mw 4500-6500及Mw 7000-11000)，目前只有發現1款PU(Toyota Tercel背墊)使用小分子量PPG(Mw 1000-1500)。而機車的多元醇組成則單一化，皆為Mw 4500-6500，故機車PU坐墊比汽車PU坐墊更易於化學回收，而汽車之化學回收應用則須考量PPG產物同時有2至3種分子量組成。後續更導入PU部分醇解技術並將廢車輛坐墊PU泡棉降解成均一多元醇漿料，醇解之產物可全回用於PU再製而無廢棄物產生，實際將廢機車坐墊PU與混合5種廢汽車坐墊PU進行部分醇解，醇解之產物可成功應用於軟泡PU再製，且廢泡棉發泡回用率可達20%而不降低PU再製產品特性。另一方面，也透過與國內泡棉廠連結，成功將廢車坐墊的實際部分醇解回收產物應用於高回彈PU泡棉產品試製。透過此”產品再製造”達成資源價值極大化，預期將能體現廢PU泡棉回收循環產業鏈的建立。

聚氨酯、化學回收、再利用

EPA-108-XA02-FINAL.pdf

7MB

2020/3/1 上午 12:00:00

Polyurethane foam is not regulated as a mandatory waste recycling item in Taiwan. The seat cushions disassembled from automotives are treated together with other automotive shredded residues by incineration, which causes a negative impact to the environment. An effective recycling and regeneration of wasted PU foams toward circular economy is needed. This project develops chemical recycling technology to decompose the PU cushion of the scrap car into polyol, and collecting 19 kinds of scrap car PU cushions from 5 representative car manufacturers (Nissan, Toyota, Ford, Mitsubishi, Honda), 1 cushion from scrap locomotive (Yamaha), 4 defective car cushions, 3 defective locomotive cushion, and ASR PU. Among them, almost 1 or 2 types of PPG are used for the car cushion (Mw 4500-6500 PPG or Mw 4500-6500 with Mw 7000-11000 PPG). The polyol composition of the locomotive is singular, all of them are Mw 4500-6500. Therefore, the PU cushion of the locomotive is easier to chemical recycling than the car. For chemical recycling applications in cars, PPG products with 2 or 3 components must be considered. The optimization of manufacturing process have be conducted by selecting glycolysis agents and catalysis, and by adjusting process parameters. Subsequently, this project adopted the partial glycolysis recycling technology to depolymerize automotive seating PU foams to polyol slurry. All of the recycled polyol slurry can be used for PU re-production without waste generation. The cushions from scrapped locomotive and mixed scrapped car can depolymerize to polyol slurry and successfully apply to the PU foam re-manufacturing (up to 20% reuse ratio). Furthermore, the application of high resilience foam is achieved by cooperating with the foam manufacturer. The construction of the chemical recycling technology is expected to facilitate the refurbish/remanufacture of recycled PU foams.

Polyurethane, Chemical recycling, Reuse