Wax oil hydrocracking method and system

US10639618B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• DALIAN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS, SINOPEC CORP. · CN

Inventors

• Tao Liu · Woodbury, US
• Baozhong Li · Qingdao, CN
• Ronghui Zeng · 东风镇, CN
• Yuzhuo ZHAO · 东风镇, CN
• Zhenmin Bai · 东风镇, CN
• Xiangchen Fang · Fushun, CN
• Yan Wang · Hunan, CN
• Xuehui Zhang · Beijing, CN
• Chang Liu · Hohhot, CN

Key dates

• Filing date: Dec 28, 2018
• Grant date: May 5, 2020
• Expiry date: Dec 28, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2229/36
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A method of wax oil hydrocracking includes the steps of pre-hydrotreating wax oil to obtain a pre-hydrotreated material flow; controlling the pre-hydrotreated material flow and a hydrogen-containing material flow to contact with a first hydrocracking catalyst to obtain a first hydrocracked material flow, and dividing the first hydrocracked material flow into a first hydrocracked material flow A and a first hydrocracked material flow B; controlling the flow B and a hydrogen-containing material flow to contact with a second hydrocracking catalyst to obtain a second hydrocracked material flow, and then separating and fractionating the second hydrocracked material flow to obtain a hydrocracked tail oil product; controlling the flow A, at least a part of the hydrocracked tail oil product, and a hydrogen-containing material flow to contact with a hydrogenation isocracking catalyst to obtain a hydrogenation isocracked material flow, and then separating and fractionating the obtained hydrogenation isocracked material flow.