Process for selectively producing light olefins in a fluid catalytic cracking process

US6069287A · kind A · utility

Assignee

• Exxon Research and Engineering Company · US

Inventors

• Paul K. Ladwig · Dover, US
• John E. Asplin · Houston, US
• Gordon F. Stuntz · Baton Rouge, US
• William A. Wachter · Baton Rouge, US
• Brian Erik Henry · Baton Rouge, US

Key dates

• Filing date: May 5, 1998
• Grant date: May 30, 2000
• Expiry date: May 5, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/20
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for selectively producing C.sub.2 -C.sub.4 olefins from a catalytically cracked or thermally cracked naphtha stream. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reaction conditions which include temperatures from about 500 to 650.degree. C. and a hydrocarbon partial pressure from about 10 to 40 psia.