The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 2025
Filed:
May. 28, 2020
Basf SE, Ludwigshafen am Rhein, DE;
Thyssenkrupp Ag, Essen, DE;
Thyssenkrupp Uhde Gmbh, Dortmund, DE;
Frederik Scheiff, Ludwigshafen, DE;
Marc Leduc, Ludwigshafen, DE;
Andreas Bode, Ludwigshafen, DE;
Karsten Bueker, Dortmund, DE;
Nicolai Antweiler, Essen, DE;
BASF SE, Ludwigshafen am Rhein, DE;
thyssenkrupp AG, Essen, DE;
thyssenkrupp Uhde GmbH, Dortmund, DE;
Abstract
A process can be used for the treatment of an offgas stream, which is formed in a plant for the production of aluminum by electrolytic reduction of aluminum oxide in a melt, using at least one anode composed of a carbon-containing material. The offgas stream contains carbon oxides due to the reduction of the aluminum oxide by the carbon. At least a substream of the carbon oxides contained in the offgas stream is reacted with hydrogen or mixed with a hydrogen stream and is subsequently passed to a use. After purification and conditioning of the offgas stream in a device, an enrichment, for example with carbon monoxide, can subsequently be carried out in a reactor and the synthesis gas obtained in this way can be fed to a chemical or biotechnological plant for the synthesis of chemicals of value.