Process of controlling heavies in a recycle catalyst stream

US8404903B2 · kind B2 · utility

Assignees

• Dow Technology Investments LLC · US
• BASF SE

Inventors

• Irvin B. Cox · The Villages, US
• Thomas C. Eisenschmid · Cross Lanes, US
• Ronald R. Peterson · St. Albans, US
• Rainer Papp · Speyer, DE
• Ludwig Herk · Edingen-Neckarhausen, DE
• Anthony G. Abatjoglou · Charleston, US

Key dates

• Filing date: Jul 2, 2009
• Grant date: Mar 26, 2013
• Expiry date: Dec 30, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/584
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process of controlling heavies in a recycle catalyst stream, particularly, for use in a continuous hydroformylation process of converting an olefin with synthesis gas in the presence of a hydroformylation catalyst to form an aldehyde product stream with subsequent separation of the catalyst for recycle to the hydroformylation step. Heavies are controlled, and preferably reduced, by means of feeding a recycle gas stream, taken as a portion of an over-head stream from a condenser, back to a vaporizer wherein the aldehyde product stream is separated.