Process for producing ethylene

US11091412B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC · CN

Inventors

• Hepan Lu · Shanghai, CN
• Yangdong Wang · Shanghai, CN
• Weisheng Yang · Shanghai, CN
• Jiawei Teng · Shanghai, CN

Key dates

• Filing date: Sep 3, 2018
• Grant date: Aug 17, 2021
• Expiry date: Sep 3, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/52
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for producing ethylene includes the steps of: (1) catalytically cracking a raw material hydrocarbon to obtain a first stream containing propylene; (2) separating the first stream to obtain a C3 component stream; and (3) disproportionating the C3 component stream to obtain an ethylene stream. This process reduces the overall energy consumption of the production process and increases the total yield of the ethylene while obtaining a polymerization-grade ethylene.