Process for the production of grade AA methanol

US4592806A · kind A · utility

Assignee

• UHDE GMBH · DE

Inventors

• Hartmut Johannes Ilgner · Pretoria, ZA
• Natarajan Thiagarajan · Dortmund, DE
• Gunter Heck · Wiesbaden, DE
• Aladar Lienerth · Kelkheim, DE

Key dates

• Filing date: Mar 28, 1984
• Grant date: Jun 3, 1986
• Expiry date: Mar 28, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S203/24
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the production of grade AA methanol by distilling raw methanol in several distillation stages, for separating grade AA methanol, tail gas, and fusel oil from the raw methanol and further processing the fusel oil to produce additional methanol of grade AA quality at a return ratio of 5:1 or higher.