Process for producing light olefins and low-sulfur fuel oil components

US11512259B2 · kind B2 · utility

Assignees

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

Inventors

• Youhao Xu · Beijing, CN
• Xin Wang · Zhejiang, CN
• Yanfen Zuo · Beijing, CN
• Shouye Cui · Beijing, CN
• Xuhui Bai · Lo Wu, CN
• Xinyu Xie · Hangzhou City, CN

Key dates

• Filing date: Oct 26, 2020
• Grant date: Nov 29, 2022
• Expiry date: Oct 26, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10L2270/023
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for producing propylene and a low-sulfur fuel oil component, comprising the steps of: i) contacting a hydrocarbon-containing feedstock oil with a catalytic conversion catalyst for reaction under effective conditions in a catalytic conversion reactor in the absence of hydrogen to obtain a reaction product comprising propylene; ii) separating the reaction product from step i) to obtain a catalytic cracking distillate oil, and iii) subjecting the catalytic cracking distillate oil to hydrodesulfurization to obtain a low-sulfur hydrogenated distillate oil suitable for use as a fuel oil component. The process can greatly improve the propylene selectivity and propylene yield while producing more fuel oil components, significantly reduce the yield of dry gas and coke, and thus has better economic and social benefits.