Purification of waste plastic based oil via a two steps hydrotreatment

US12203036B2 · kind B2 · utility

Assignee

• TotalEnergies One Tech Belgium · BE

Inventors

• Cindy Adam · Wierde, BE
• Delphine Minoux · Nivelles, BE
• Walter Vermeiren · Houthalen-Helchteren, BE
• Sébastien Leplat · Honfleur, FR
• Emmanuel Van Loock · Les Bons Villers, BE
• Christophe Breton · Honfleur, FR

Key dates

• Filing date: Apr 6, 2021
• Grant date: Jan 21, 2025
• Expiry date: Apr 6, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/62
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process to produce olefins and aromatics via a purification of a hydrocarbon stream including: a) Providing a hydrocarbon stream having a starting boiling point of at least 15° C., a diene value of at least 1.0 preferably at least 1.5 g I2/100 g and a bromine number of at least 5 g Br2/100 g and containing at least 10 wt % of pyrolysis plastic oil where preferably at least 10 wt. % of said hydrocarbon stream has a boiling point of at least 150° C. based on the total weight of said hydrocarbon stream; c) Performing a first hydrotreating step; e) performing a second hydrotreating step; and f) recovering a purified hydrocarbon stream wherein at least a part of this purified hydrocarbon stream is sent to a steam cracker to produce olefins, such as ethylene and propylene, and aromatics.