Method for periodically reactivating a copper-containing catalyst material

US6486087B1 · kind B1 · utility

Assignee

• XCELLSiS GmbH · DE

Inventors

• Carlo Saling · Owen, DE
• Martin Schuessler · Bad Birnbach, DE
• Thomas Stefanovski · Eppelheim, DE

Key dates

• Filing date: Sep 18, 2000
• Grant date: Nov 26, 2002
• Expiry date: Jan 25, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/584
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for periodically reactivating copper-containing catalyst material includes applying an oxygen-containing gas stream to the catalyst material for reactivation purposes. When the reactor is in the warm operating state, the application of the oxygen-containing gas stream to the catalyst material is interrupted when the monitored temperature of the catalyst material exceeds a maximum level which is a predeterminable tolerance level above a predetermined operating temperature. In cold-start phases, initially a mixture of a fuel and an oxygen-containing gas stream is fed to the catalyst material, until the monitored temperature of the catalyst material exceeds a predeterminable switch-over level, after which only the oxygen-containing gas stream is supplied. To keep the reactor warm after operation has ended, the reactivation can be activated each time the temperature falls below a further threshold level.