Method for the production of aldehydes

US7087795B2 · kind B2 · utility

Assignee

• CELANESE CHEMICALS EUROPE GMBH · DE

Inventors

• Thomas Krumrey · Teningen, DE
• Kurt Schalapski · Oberhausen, DE
• Robert Rapier · Ponca City, US
• John Steinbach · Bay City, US
• Bak Shah · Bay City, US
• Mark Hewlett · Bay City, US

Key dates

• Filing date: Nov 27, 2002
• Grant date: Aug 8, 2006
• Expiry date: Jan 10, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/50
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a hydroformylation method, whereby the homogeneous liquid reactor discharge is first supplied to a gas/liquid separator and then run through an extraction column with a counter-current of synthesis gas and finally fed to an evaporator. The invention is characterised in that the homogeneous liquid mass flow is supplied to the upper section of the extraction column at a temperature above 90° C.