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公开(公告)号:US20230009131A1
公开(公告)日:2023-01-12
申请号:US17860239
申请日:2022-07-08
Applicant: Basell Poliolefine Italia S.r.l.
Inventor: Sandor Nagy , Diego Brita , Christopher D. Smith , David A. Heaps , Daniel F. White , David L. Ramage
IPC: C08J11/16
Abstract: Pre-treatment methods for polyolefin-based feed streams before depolymerization are described. Polyolefins are separated from other material in the polyolefin-based feed stream using density differences in an aqueous solution, which allows for a pre-treatment method that does not affect the depolymerization catalyst. By removing the non-polyolefin materials from the feed stream, the depolymerization of the polyolefin material can proceed at lower temperatures for longer cycles. This results in a more efficient process with a smaller carbon footprint.