Invention Publication
- Patent Title: METHOD FOR TREATING WASTE PLASTICS BY POLYMER DISSOLUTION AND ADSORPTION PURIFICATION
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Application No.: US18266895Application Date: 2021-12-02
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Publication No.: US20240051186A1Publication Date: 2024-02-15
- Inventor: Wilfried WEISS , Damien LEINEKUGEL LE COCQ , Mathilde SIBEAUD , Amir Hossein AHMADI-MOTLAGH
- Applicant: IFP Energies nouvelles
- Applicant Address: FR RUEIL-MALMAISON
- Assignee: IFP Energies nouvelles
- Current Assignee: IFP Energies nouvelles
- Current Assignee Address: FR RUEIL-MALMAISON
- Priority: FR 13161 2020.12.14
- International Application: PCT/EP2021/083873 2021.12.02
- Date entered country: 2023-06-13
- Main IPC: B29B17/02
- IPC: B29B17/02
Abstract:
The present invention relates to a process for treating a plastic feedstock, comprising:
a) a dissolution step involving placing the feedstock in contact with a dissolution solvent, at a dissolution temperature of between 100° C. and 300° C. and a dissolution pressure of between 1 and 20.0 MPa abs, the dissolution solvent having a boiling point of between −50° C. and 250° C., to obtain a crude polymer solution;
b) a step of adsorption by placing the crude polymer solution in contact with an adsorbent, at a temperature of between 100 and 300° C. and a pressure of between 1.0 and 20.0 MPa abs, to obtain a refined polymer solution; and then
c) a step of recovering the polymers, to obtain at least one solvent fraction and one purified polymer fraction.
a) a dissolution step involving placing the feedstock in contact with a dissolution solvent, at a dissolution temperature of between 100° C. and 300° C. and a dissolution pressure of between 1 and 20.0 MPa abs, the dissolution solvent having a boiling point of between −50° C. and 250° C., to obtain a crude polymer solution;
b) a step of adsorption by placing the crude polymer solution in contact with an adsorbent, at a temperature of between 100 and 300° C. and a pressure of between 1.0 and 20.0 MPa abs, to obtain a refined polymer solution; and then
c) a step of recovering the polymers, to obtain at least one solvent fraction and one purified polymer fraction.
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