Exhaust gas treatment system

US12011690B2 · kind B2 · utility

Assignees

• Johnson Matthey Public Limited Company · GB
• Johnson Matthey Catalysts (Germany) GmbH · DE

Inventors

• Joseph Michael Fedeyko · Glen Mills, US
• Anthony Ferraro · North Reading, US
• Kenneth KOEHLER · Harlingen, US
• Dirk-Stefan Reichert · Lübeck, DE
• Harald Scherbel · Unterlangenstadt, DE
• Harald Schreiber · Salzkotten, DE
• Andrew Scullard · Reading, GB
• Thomas Yeh · Audubon, US

Key dates

• Filing date: Aug 6, 2021
• Grant date: Jun 18, 2024
• Expiry date: Feb 8, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02C20/20
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An exhaust system for the treatment of an exhaust gas comprising a species to be treated, the system comprising: a first gas inlet for providing a flow of exhaust gas; a second gas inlet for providing a flow of heated gas; a plurality of sorbent beds for releasably storing the species; one or more catalysts for decomposing the species; first and second exhaust gas outlets; and a valve system configured to establish independently for each sorbent bed fluid communication in a first or second configuration, wherein: i) in the first configuration the flow of the exhaust gas from the first gas inlet contacts a sorbent bed for storing the species and then passes to the first gas outlet; and ii) in the second configuration the flow of heated gas from the second gas inlet contacts a sorbent bed for releasing the species, passes to one of the one or more catalysts and then passes to the second exhaust gas outlet; wherein the valve system is configured to ensure that at least one sorbent bed is in the first configuration and, preferably at least one other sorbent bed is in the second configuration.