| 摘要 |
Method and system for recovering polyethylene from a polyethylene-containing scrap material. The recovery method includes the steps of putting the scrap material containing polyethylene into a solvent mixture containing a polyethylene-soluble solvent and a polyethylene-insoluble solvent in a ratio of 1:1~1:3 based on volume, heating the mixture at a temperature of 60~145° C. to dissolve the polyethylene from the scrap material, resulting in a mixture of a polyethylene solution and insoluble substances. Then, the resulting mixture is filtered to separate the polyethylene solution and the insoluble substances, and polyethylene is deposited by cooling the separated polyethylene solution. Then, a mixture of the polyethylene deposition and the solvent mixture is filtered to separate the polyethylene deposition. Therefore, a huge amount of polyethylene-containing scrap material can be continuously processed, without generation of harmful materials, and can simply recover a high-quality PE at low cost.
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