Process and device for purifying exhaust gases containing nitrogen oxides

US6119455A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Thomas Hammer · Iserlohn, DE
• Jorg Kieser · Albstadt, DE

Key dates

• Filing date: Feb 26, 1999
• Grant date: Sep 19, 2000
• Expiry date: Feb 26, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2257/404
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In particular for exhaust-gas purification, different processes have been proposed. According to the invention, the polluted exhaust gas flows through a reactor volume to which non-thermal gas discharges are applied, while being brought into contact with a solid reducing agent at least once, and preferably several times. The reducing agent can, in particular, consist of carbon fibers. A suitable device for combining dielectric barrier discharges with the reduction has means for field enhancement substantially periodically spaced in the reactor.