Method and apparatus for the separation of sulfur & nitrogen oxides from a waste gas

US4149858A · kind A · utility

Assignees

• Deutsche Babcock Aktiengesellschaft · DE
• Bergwerksvergand GmbH · DE

Inventors

• Rolf Noack · Dresden, DE
• Horst Lichtenberger · Oberhausen, DE
• Stefan Gramelt · Oberhausen, DE
• Harald Juntgen · Essen, DE
• Karl Knoblauch
• Horst Grochowski · Oberhausen, DE
• Jurgen Schwarte · Essen, DE

Key dates

• Filing date: Jun 6, 1977
• Grant date: Apr 17, 1979
• Expiry date: Jun 6, 1997

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2258/0283
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method and apparatus for separating undesirable components from a waste gas by adsorption of the components onto a granular adsorbent. The gas is caused to flow serially through two distinct side-by-side layers of adsorbent both moving parallel to one another in a direction perpendicular to the direction of gas flow. The adsorbent material is so controlled that the particles of the second layer to be contacted by the gas are less loaded with impurities than the particles of the first layer. In one embodiment, this result is achieved by moving the second layer faster than the first layer.