Process for olefin production by metathesis and reactor system therefor

US10112877B2 · kind B2 · utility

Assignee

• Borealis AG · AT

Inventors

• Mariana Stoyanova · Berlin, DE
• Evgeny Kondratenko · Rostock, DE
• David Linke · Berlin, DE
• Eberhard Ernst · Linz, AT
• René Dicke · Linz, AT

Key dates

• Filing date: Dec 19, 2014
• Grant date: Oct 30, 2018
• Expiry date: Dec 19, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2523/30
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for obtaining an olefin by metathesis including at least two reaction pathways. In at least one first reaction pathway at least one stream with at least one olefin as starting material is fed to at least one first pre-bed reactor with at least one pre-bed having at least one compound selected from the group of alkaline earth metal oxides. The stream leaving the at least one first pre-bed reactor is subsequently fed to at least one main catalyst bed reactor downstream of the at least one first pre-bed reactor including at least one main catalyst bed with at least one first catalyst component comprising a metathesis catalyst, and at least one second catalyst component comprising a catalyst for double bond isomerization, whereby the first and second catalyst are physically mixed with each other.