Method and device for the hydroformylation of isobutene and for the separation of the product mixture

US9353040B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Goetz Baumgarten · Neubiberg, DE
• Michael Graβ · Haltern am See, DE
• Alfred Kaizik · Marl, DE
• Markus Winterberg · Waltrop, DE
• Hans-Gerd Lueken · Marl, DE
• Bart Hamers · Horst, NL
• Markus Priske · Mobile, US
• Dirk Fridag · Haltern am See, DE
• Robert Franke · Marl, DE
• Dieter Hess · Marl, DE

Key dates

• Filing date: Feb 11, 2013
• Grant date: May 31, 2016
• Expiry date: Feb 11, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/235
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a method for producing a product mixture (2) by means of the technical hydroformylation of a hydrocarbon stream (1) that contains isobutene, and for separating the product mixture (2) that is obtained, as well as to a device for the claimed method and to the use of a claimed device. The problem addressed thereby is that of providing a method and an associated device that allow the amount of high-boiling substances in the product mixture (2) to be kept as low as possible and thus the yield of the reaction to be increased. The problem is solved by the use of a nano-filtration device (M) for separating the catalyst from the product mixture (2), said device having especially high permeability to 3-methylbutanoic acid.