Method for the catalytic gas phase oxidation of acrolein into acrylic acid

US6403829B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Signe Unverricht · Mannheim, DE
• Heiko Arnold · Mannheim, DE
• Andreas Tenten · Maikammer, DE
• Ulrich Hammon · Mannheim, DE

Key dates

• Filing date: Sep 10, 2001
• Grant date: Jun 11, 2002
• Expiry date: Sep 10, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2523/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In a process for the catalytic gas-phase oxidation of acrolein to acrylic acid, the reaction gas starting mixture is passed, with an acrolein loading of ≧150 l (s.t.p.)/l.h, over a fixed-bed catalyst which is housed in two spatially successive reaction zones A, B, the reaction zone B being kept at a higher temperature than the reaction zone A.