Production of olefins

US8071833B2 · kind B2 · utility

Assignee

• Total Petrochemicals Research Feluy · BE

Inventors

• Jacques Grootjans · Leefdaal, BE
• Valérie Vanrysselberghe · Aalbeke, BE
• Walter Vermeiren · Houthalen-Helchteren, BE

Key dates

• Filing date: May 22, 2003
• Grant date: Dec 6, 2011
• Expiry date: May 28, 2027

Classification

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

Abstract

A process (or steam cracking a hydrocarbon feedstock containing olefins to provide increased light olefins in the steam cracked effluent, the process comprising passing a first hydrocarbon feedstock containing one or more olefins through a reactor containing a crystalline silicate to produce an intermediate effluent with an olefin content of lower molecular weight than that of the feedstock, fractionating the intermediate effluent to provide a lower carbon fraction and a higher carbon fraction, and passing the higher carbon fraction, as a second hydrocarbon feedstock, through a stream cracker to produce a steam cracked effluent.