Process and apparatus for the catalytic elimination of a pollutant from the exhaust gas from a combustion installation

US6422005B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Winfried Dolling · Weißenbrunn, DE
• Reinhard Latsch · Leinfelden, DE
• Wieland Mathes · Aichach, DE
• Ronald Neufert · Aichach, DE
• Rainer Tost · Wendelstein, DE
• Dietmar Weisensel · Sinzing, DE
• Klaus Wenzlawski · Wendelstein, DE
• Jurgen Zurbig · Burgkunstadt, DE

Key dates

• Filing date: Mar 22, 2001
• Grant date: Jul 23, 2002
• Expiry date: Mar 22, 2021

Classification

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

Abstract

A process for catalytic removal of a pollutant from a combustion installation exhaust gas includes calculating, from operationally relevant parameters of the installation, a pollutant concentration using a predetermined characteristic diagram. A predetermined quantity of a reagent is introduced into the exhaust per unit time as a function of the calculated pollutant concentration, the reagent reacting with the pollutant at a catalytic converter. Operating states of the installation with substantially constant pollutant emission levels are determined. The pollutant concentration during an operating state of the installation with a substantially constant pollutant emission level is determined with a sensor and only a pollutant concentration from the installation in a steady operating state is used to correct the diagram. The pollutant concentration from the installation is calculated with the diagram in a non-steady operating state. An apparatus for the catalytic removal of the pollutant from the exhaust gas is also provided.