Upgrading polynucleararomatic hydrocarbon-rich feeds

US11118120B2 · kind B2 · utility

Assignee

• EXXONMOBIL RESEARCH AND ENGINEERING COMPANY · US

Inventors

• Stephen H. Brown · Lebanon, US
• Samia Ilias · Bound Brook, US
• Randolph J. Smiley · Pellettown, US
• Richard A. Demmin · Highland Park, US
• Shifang Luo · Pittsford, US
• Brenda A. Raich · Annandale, US
• Aldrin G. Cuevas · Diemelstraße, US
• Keith Wilson · Allentown, US
• Jesse R. McManus · Baton Rouge, US
• Lei Zhang · Beijing, CN

Key dates

• Filing date: Dec 9, 2019
• Grant date: Sep 14, 2021
• Expiry date: Dec 9, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/28
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A method of upgrading refining streams with high polynucleararomatic hydrocarbon (PNA) concentrations can include: hydrocracking a PNA feed in the presence of a catalyst and hydrogen at 380° C. to 430° C., 2500 psig or greater, and 0.1 hr−1 to 5 hr−1 liquid hourly space velocity (LSHV), wherein the weight ratio of PNA feed to hydrogen is 30:1 to 10:1, wherein the PNA feed comprises 25 wt % or less of hydrocarbons having a boiling point of 700° F. (371° C.) or less and having an aromatic content of 50 wt % or greater to form a product comprising 50 wt % or greater of the hydrocarbons having a boiling point of 700° F. (371° C.) or less and having an aromatic content of 20 wt % or less.