Method of gas phase catalytic oxidation to give maleic acid anhydride

US6624315B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Peter Zehner · Ludwigshafen, DE
• Otto Machhammer · Mannheim, DE
• Claus Hechler · Mannheim, DE
• Alexander Weck · Freinsheim, DE
• Gerhard Olbert · Dossenheim, DE
• Uwe Stabel · Otterstadt, DE

Key dates

• Filing date: Sep 11, 2001
• Grant date: Sep 23, 2003
• Expiry date: Sep 11, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/32475
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for the preparation of maleic anhydride by heterogeneously catalyzed gas-phase oxidation in a reactor with feed for the reaction mixture at one end of the reactor and discharge of the product mixture at the opposite end of the reactor, and with devices for dissipating the heat of reaction which are arranged in the reactor interior and through which a heat-exchange medium flows and which are designed as heat-exchanger plates.