公开(公告)号：US20240059858A1

公开(公告)日：2024-02-22

申请号：US17892573

申请日：2022-08-22

Applicant: Wisconsin Alumni Research Foundation

Inventor： George Huber ,  Zhuo Xu ,  Kevin Sanchez-Rivera ,  Ezra Bar-Ziv ,  Shreyas Kolapkar ,  Victor Ierulli

IPC: C08J11/28 ,  C08J11/24

CPC classification number: C08J11/28 ,  C08J11/24

Abstract: A system to carry out solvent targeted recovery and precipitation (STRAP) to recover individual polymers from multilayer plastic films or mixed plastic wastes, comprising a down-sizing device to shred the plastic wastes into particles with a size and aspect ratio to be flowable; a feeder that conveys the plastic particles in a constant flow without bridging; a dissolution vessel to selectively dissolve an individual polymer component in a solvent; a high temperature filter to separate the dissolved polymer component from the undissolved plastics; a precipitator to precipitate the dissolved polymer component; a low temperature filter to separate the precipitated polymer component from the solvent; and a distillation unit to purify the recycled solvent. The unique design of the feeder and the dissolution vessels allows the system to run in a semi-continuous mode.