Two stage catalytic process for pyrolysis oil upgrading to btex

US11602735B1 · kind B1 · utility

Assignee

• SAUDI ARABIAN OIL COMPANY · SA

Inventors

• Miao Sun · Dhahran, SA
• Sohel Shaikh · Dhahran, SA
• Ibrahim Abba · Dhahran, SA
• Noor Al-Mana · Dhahran, SA
• Ke Zhang · Stoneham, US
• Zhonglin Zhang · Dhahran, SA

Key dates

• Filing date: Nov 5, 2021
• Grant date: Mar 14, 2023
• Expiry date: Nov 5, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In accordance with one or more embodiments of the present disclosure, a multi-stage process for upgrading pyrolysis oil comprising polyaromatic compounds to benzene, toluene, ethylbenzene, and xylenes (BTEX) includes upgrading the pyrolysis oil in a slurry-phase reactor zone to produce intermediate products, wherein the slurry-phase reactor zone comprises a mixed metal oxide catalyst; and hydrocracking the intermediate products in a fixed-bed reactor zone to produce the BTEX, wherein the fixed-bed reactor zone comprises a mesoporous zeolite-supported metal catalyst.