Optimized separation technique for work-up of homogeneously catalysed hydroformylation mixtures

US10017443B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Hans-Gerd Lueken · Marl, DE
• Bart Hamers · Horst, NL
• Dirk Fridag · Haltern am See, DE
• Robert Franke · Marl, DE
• Markus Priske · Mobile, US
• Dieter Hess · Marl, DE
• Marc Becker · Trier, DE
• Markus Rudek · Büttelborn, DE

Key dates

• Filing date: Feb 13, 2014
• Grant date: Jul 10, 2018
• Expiry date: Oct 18, 2034

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2531/822
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a method for producing alcohols by homogeneously catalyzed hydroformylation of olefins to aldehydes and subsequent hydration of the aldehydes. The invention further relates to a system for carrying out the method. The main focus is on the separation technique for work-up of the hydroformylation mixture. The problem addressed by the invention is that specifying a work-up method for hydroformylation mixtures that utilizes the specific advantages of known separation technologies but at the same time largely avoids the specific disadvantages of said separation technologies. The most important objective is to create a catalyst separation system that is as complete and at the same time conservative as possible and that operates in a technically reliable manner and entails low investment and operating costs. The method should be unrestrictedly suitable for processing the reaction output from oxo systems in “world scale” format. The problem is solved by combining membrane separation units and a thermal separation unit, the thermal separation unit being operated in such a manner that 80% to 98% of the mass introduced with the product stream into the thermal separati…