Process for obtaining olefins by metathesis

US10029959B2 · 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 30, 2014
• Grant date: Jul 24, 2018
• Expiry date: Dec 30, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/52
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for obtaining an olefin by metathesis comprising feeding at least one stream comprising at least one olefin as starting material to at least one reactor comprising at least one main catalyst bed comprising a) at least one first catalyst component comprising a metathesis catalyst, and b) 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, wherein the at least one stream comprising at least one olefin as starting material is co-fed with hydrogen gas in a concentration range between 0.01 Vol % and 0.2 Vol % in respect to the total gas amount in the stream, and the metathesis process is conducted in the at least one reactor at a pressure between 0.1 MPa and 3.0 MPa and at a temperature between 250° C. and 300° C.