Two step process for chemically recycling plastic waste

US11584888B2 · kind B2 · utility

Assignees

• Anellotech, Inc. · US
• R PLUS JAPAN LIMITED · JP

Inventors

• Leslaw Mleczko · Bochum, DE
• Raghava Dasarathy · New York, US
• Greg Coil · Stony Point, US
• Yu-Ting Cheng · Hsinchu, TW
• Collin Schmidt · Maplewood, US
• Jeff Whiting · Goshen, US
• Rocco Carabetta · East Longmeadow, US
• Terry Mazanec · Solon, US

Key dates

• Filing date: Mar 15, 2021
• Grant date: Feb 21, 2023
• Expiry date: Mar 15, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/30
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A two-step process that includes a pyrolytic first step carried out in a mechanically or gravitationally impelled reactor and a catalytic fluid bed second step that upgrades the resulting vapor, for the conversion of waste plastics, polymers, and other waste materials to useful chemical and fuel products such as paraffins, olefins, and aromatics such as BTX is described.