Method for preparation of ethylene and propylene by catalytic cracking using a fluid-bed catalyst

US7686942B2 · kind B2 · utility

Assignees

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

Inventors

• Zaiku Xie · Shanghai, CN
• Hui Yao · Taichung, TW
• Weimin Yang · Shanghai, CN
• Guangwei Ma · Shanghai, CN
• Jingxian Xiao · Shanghai, CN
• Liang Chen · Zhejiang, CN

Key dates

• Filing date: Feb 3, 2009
• Grant date: Mar 30, 2010
• Expiry date: Feb 3, 2029

Classification

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

Abstract

A method for preparation of ethylene and propylene by catalytic cracking using a fluid-bed catalyst. The main technical problems to be solved are a relatively high reaction temperature, and low activities and poor selectivities of the catalyst at a low temperature, during the reaction for preparing ethylene and propylene by catalytically cracking naphtha. The fluid-bed catalyst is a composition of the chemical formula Mo1.0VaAbBcCdOx based on stoichiometric ratio. The method using the fluid-bed catalyst has satisfactorily solved the above-mentioned problems, and is useful in the industrial production of ethylene and propylene by catalytically cracking naphtha.