Method and device for the catalytic removal of a pollutant contained in an exhaust gas of a combustion system

US6737033B1 · kind B1 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Lothar Hofmann · Burgkunstadt, DE
• Wieland Mathes · Aichach, DE

Key dates

• Filing date: Oct 2, 2000
• Grant date: May 18, 2004
• Expiry date: Apr 17, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The method and the device are configured for the catalytic removal of a pollutant contained in an exhaust gas of a combustion system using a reagent. A temporal mean, or time average, is formed for the concentration of the pollutant in the exhaust gas. The catalytic converter is laid out for complete conversion if the reagent is introduced stoichiometrically. Here, the reagent is introduced in substoichiometric proportions with respect to the time average of the pollutant content.