Catalytic conversion apparatus

US8088335B2 · kind B2 · utility

Assignees

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

Inventors

• Jun Long · Beijing, CN
• Kejia Xu · Beijing, CN
• Shuandi Hou · Beijing, CN
• Zhijian Da · Beijing, CN
• Chaogang Xie · Beijing, CN
• Jiushun Zhang · Beijing, CN
• Zhanzhu Zhang · Beijing, CN

Key dates

• Filing date: Mar 30, 2007
• Grant date: Jan 3, 2012
• Expiry date: Mar 31, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/20
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A conversion apparatus for catalytic cracking a hydrocarbon feed to light hydrocarbon comprises at least one riser reactor, a dense bed reactor, a disengager, and a stripper. A dense bed reactor which is separated from disengage, is employed to enforce further cracking hydrocarbon to light olefins, with low methane yield. Moreover, the spent catalysts discharged from the outlet of the dense bed reactor can be introduced into the stripper via a specific catalyst transporting channel, to maintain catalyst concentration in the dense bed reactor that can be advantageous to deeper cracking of the intermediate products to produce more light olefins, particularly propylene.