Process for converting inferior feedstock to high quality fuel oil

US8597500B2 · kind B2 · utility

Assignees

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

Inventors

• Youhao Xu · Beijing, CN
• Lishun Dai · Beijing, CN
• Zhigang Zhang · Hunan, CN
• Shouye Cui · Beijing, CN
• Jianhong Gong · Beijing, CN
• Chaogang Xie · Beijing, CN
• Jun Long · Beijing, CN
• Hong Nie · Longbeilingcun, CN
• Zhijian Da · Beijing, CN
• Jiushun Zhang · Beijing, CN
• Tao Liu · Woodbury, US
• Anguo Mao · Beijing, CN

Key dates

• Filing date: Mar 13, 2009
• Grant date: Dec 3, 2013
• Expiry date: Jun 7, 2030

Classification

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

Abstract

A catalytic conversion process to convert inferior feedstock to high quality fuel oil and propylene is disclosed. Inferior feedstock is introduced into first and second reactor zone, wherein first step and second step reactions occur by contacting with catalytic conversion catalyst. Product vapors include fluid catalytic cracking gas oil (FGO) which is introduced into a hydrotreating unit and/or extraction unit to obtain hydrotreated FGO and/or extracted FGO. Hydrotreated FGO and/or extracted FGO returns to the first reactor zone and/or another catalytic cracking unit to obtain propylene and gasoline. The extracted oil of said FGO is rich in double ring aromatics and the raffinate of said FGO is rich in chain alkane and cycloalkane. More particularly, the invention utilizes petroleum oil resources efficiently for decreasing the yield of dry gas and coke significantly.