公开(公告)号：US20240327715A1

公开(公告)日：2024-10-03

申请号：US18708524

申请日：2022-11-15

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： Diego Brita ,  Simona Guidotti ,  Dario Liguori ,  Francesco Menichelli ,  Sandor Nagy ,  Noel C. Hallinan

IPC: C10B53/07 ,  B01J21/08 ,  B01J23/30 ,  C08J11/16 ,  C10B57/06

CPC classification number: C10B53/07 ,  B01J21/08 ,  B01J23/30 ,  C08J11/16 ,  C10B57/06 ,  C08J2323/06 ,  C08J2423/12

Abstract: A process for depolymerizing plastic waste including the steps of: a) providing a melt plastic waste feedstock made from or containing recycled polypropylene and polyethylene; and b) subjecting the melt product obtained in (a) to a temperature ranging from 280° C. to 600° C., thereby obtaining a depolymerization product; wherein the melt product, the depolymerization product, or both are contacted with a catalyst made from or containing a supported heteropolyacid, having a transition metal portion containing transition metals selected from the group consisting of W, Mo, and V and a non-metal portion containing non-metal elements selected from the group consisting of Si, P, and As.

公开(公告)号：US20250092215A1

公开(公告)日：2025-03-20

申请号：US18293298

申请日：2022-07-13

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： Diego Brita ,  Simona Guidotti ,  Dario Liguori ,  Francesco Menichelli

IPC: C08J11/16 ,  B01J21/06 ,  B01J21/08 ,  B01J23/14 ,  B01J23/18 ,  B01J35/61 ,  B01J35/63 ,  B01J35/64

Abstract: A process for depolymerizing plastics of a plastic waste feedback, using a doped silica catalyst.

公开(公告)号：US20240228405A9

公开(公告)日：2024-07-11

申请号：US18493300

申请日：2023-10-24

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： Sandor Nagy ,  Christopher D. Smith ,  Daniel F. White ,  Diego Brita ,  Simona Guidotti ,  Dario Liguori ,  Francesco Menichelli ,  Paolo Ruzzi

IPC: C07C4/22 ,  B01J21/16 ,  B01J21/18 ,  B01J23/02 ,  B01J29/40 ,  B01J29/70

CPC classification number: C07C4/22 ,  B01J21/16 ,  B01J21/18 ,  B01J23/02 ,  B01J29/40 ,  B01J29/7007 ,  C07C2529/40

Abstract: Catalytic compositions and processes for depolymerizing polyolefin-based feed into useful petrochemical products are described. The compositions are a composite of a zeolite catalyst component and a co-catalyst comprising an activated clay component and/or a solid base component. These catalyst systems, along with heat, are used to both increase the depolymerization reaction rate of the feed streams and suppress poisoning effects of impurities that may be present in the polyolefin-based feed. This results in a shorter residence time in the depolymerization unit and more efficient process.

公开(公告)号：US20240132425A1

公开(公告)日：2024-04-25

申请号：US18493300

申请日：2023-10-23

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： Sandor Nagy ,  Christopher D. Smith ,  Daniel F. White ,  Diego Brita ,  Simona Guidotti ,  Dario Liguori ,  Francesco Menichelli ,  Paolo Ruzzi

IPC: C07C4/22 ,  B01J21/16 ,  B01J21/18 ,  B01J23/02 ,  B01J29/40 ,  B01J29/70

CPC classification number: C07C4/22 ,  B01J21/16 ,  B01J21/18 ,  B01J23/02 ,  B01J29/40 ,  B01J29/7007 ,  C07C2529/40

Abstract: Catalytic compositions and processes for depolymerizing polyolefin-based feed into useful petrochemical products are described. The compositions are a composite of a zeolite catalyst component and a co-catalyst comprising an activated clay component and/or a solid base component. These catalyst systems, along with heat, are used to both increase the depolymerization reaction rate of the feed streams and suppress poisoning effects of impurities that may be present in the polyolefin-based feed. This results in a shorter residence time in the depolymerization unit and more efficient process.