Combined process for hydrotreating and catalytic cracking of residue

US8529753B2 · kind B2 · utility

Assignees

• RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC · CN
• CHINA PETROLEUM & CHEMICAL CORPORATION · CN

Inventors

• Chuanfeng Niu · Beijing, CN
• Lishun Dai · Beijing, CN
• Yongcan Gao · Beijing, CN
• Dadong Li · Beijing, CN
• Yahua Shi · Beijing, CN
• Hong Nie · Longbeilingcun, CN
• Qinghe Yang · Beijing, CN

Key dates

• Filing date: Dec 27, 2007
• Grant date: Sep 10, 2013
• Expiry date: May 3, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G69/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Disclosed is a combined process for hydrotreating and catalytic cracking of residue, wherein the residue, catalytic cracking heavy cycle oil with acidic solid impurity being removed, optional distillate oil and adistillate of catalytic cracking slurry oil from which the acidic solid impurity is removed are fed into residue hydrotreating unit, the hydrogenated residue obtained and optional vacuum gas oil are fed into catalytic cracking unit to obtain various products; the catalytic cracking heavy cycle oil from which the acidic solid impurity is removed is circulated to the residue hydrotreating unit; the catalytic cracking slurry oil is separated by distilling, the distillate of the catalytic cracking slurry oil after removing off the acidic solid impurity is circulated to the residue hydrotreating unit. This process makes the residue hydrotreating and catalytic cracking being combined together more effectively such that it is not only able to improve product quality of the residue hydrotreating, elongate operation cycle of the residue hydrotreating unit, but also increases the yield of the hydrogenated diesel oil and catalytic cracking light oil, and decreases coking quantity of t…