Process for dewatering ethanol

US7399892B2 · kind B2 · utility

Assignee

• OXENO OLEFINCHEMIE GMBH · DE

Inventors

• Armin Matthias Rix · Marl, DE
• Frank Hoper · Karben, DE
• Jochen Praefke · Johannesweg, DE
• Wilfried Buschken · Haltern am See, DE

Key dates

• Filing date: Jan 19, 2007
• Grant date: Jul 15, 2008
• Expiry date: Jan 19, 2027

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2317/04
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for preparing low-water ethanol from at least two streams of relatively water-rich ethanol that have a different water content by dewatering at membranes. The low-water ethanol can be used to prepare ethyl tert-butyl ether (ETBE).