Preparation of (meth)acrolein and/or (meth)acrylic acid by heterogeneously catalyzed partial oxidation of C3 and/or C4 precursor compounds

US7214821B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Claus Hechler · Mannheim, DE
• Gerhard Olbert · Dossenheim, DE
• Dietmar Loewen · Pirmasens, DE

Key dates

• Filing date: Dec 23, 2004
• Grant date: May 8, 2007
• Expiry date: Nov 7, 2025

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/2485
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process is proposed for preparing (meth)acrolein and/or (meth)acrylic acid by partially oxidizing C3 and/or C4 precursor compounds in the gas phase in the presence of a heterogeneous particulate catalyst, in a reactor having two or more thermoplates (1) arranged vertically and parallel to each other while in each case leaving a gap (2), the heterogeneous particulate catalyst being installed in the gaps (2) and the gaseous reaction mixture being passed through the gaps (2), which comprises monitoring, controlling and/or regulating the process by selecting as a monitoring, control and/or regulation parameter one or more temperatures which are measured in one or more gaps (2), at one or more measurement points which are distributed over the height of each gap (2).