Production of olefins

US6646175B1 · kind B1 · utility

Assignee

• Fina Research, S.A. · BE

Inventors

• Jean-Pierre Dath · Ath, BE
• Luc Delorme · Waterloo, BE
• Jacques Grootjans · Leefdaal, BE
• Xavier Vanhaeren · Genval, BE
• Walter Vermeiren · Houthalen-Helchteren, BE

Key dates

• Filing date: Dec 5, 1998
• Grant date: Nov 11, 2003
• Expiry date: Dec 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 the catalytic cracking of at least one olefin in an olefinic stream containing impurities, the cracking process being selective towards light olefins in the effluent, the process comprising contacting a feedstock olefinic stream containing at least one sulphur-, nitrogen- and/or oxygen-derivative impurity with a crystalline silicate catalyst of the MFI-type, the catalyst having a silicon/aluminum atomic ratio of at least about 180, to produce an effluent stream having substantially the same olefinic content by weight as, but a different olefin distribution than, the feedstock stream.