Method for producing formaldehyde

US7381851B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Gerhard Olbert · Dossenheim, DE
• Thorsten Johann · Schifferstadt, DE
• Markus Weber · Langenfeld, DE
• Neven Lang · Mannheim, DE
• Eckhard Ströfer · Mannheim, DE
• Martin Fiene · Niederkirchen, DE
• Markus Siegert · Heidelberg, DE

Key dates

• Filing date: Dec 23, 2004
• Grant date: Jun 3, 2008
• Expiry date: Mar 24, 2025

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F28F2250/104
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for preparing formaldehyde by gas-phase oxidation of methanol vapor by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst comprising iron and molybdenum, wherein the process is carried out in a reactor (1) having heat-exchange plates (2) which are arranged in the longitudinal direction of the reactor (1) and have a spacing between them and through which a heat transfer medium flows, inlet and outlet facilities (3, 4) for the heat transfer medium to the heat-exchange plates (2) and also gaps (5) between heat-exchange plates (2) in which the fixed-bed catalyst is present and into which the methanol vapor and the gas stream comprising molecular oxygen are passed, is described.