Processes and systems for making recycle content hydrocarbons

US11945998B2 · kind B2 · utility

Assignee

• Eastman Chemical Company · US

Inventors

• Daryl Bitting · Longview, US
• Kenny Randolph Parker · Afton, US
• Michael Gary Polasek · Longview, US
• David Eugene Slivensky · Center Point, US
• Xianchun Wu · Longview, US

Key dates

• Filing date: Oct 29, 2020
• Grant date: Apr 2, 2024
• Expiry date: Oct 29, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/20
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Processes and systems for making recycle content hydrocarbons, including olefins, from recycled waste material. Recycle waste material may be pyrolyzed to form recycle content pyrolysis oil composition (r-pyoil), at least a portion of which may then be cracked to form a recycle content olefin composition (r-olefin). In some cases, the pyrolysis and cracking may be carried out in different sections of the same furnace, or in different furnaces in the same cracker facility. Pyrolysis conducted in a furnace may or may not require retrofitting a furnace previously used to crack alkanes to form olefins.