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:
Sep. 09, 2008
Filed:
Oct. 10, 2003
Applicants:
Knut Ingvar Åsen, Porsgrunn, NO;
Stein Julsrud, Skien, NO;
Ole-jacob Siljan, Skien, NO;
Inventors:
Assignee:
Norsk Hydro ASA, Oslo, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01); C25C 3/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for operating one or more electrolysis cells () for production of aluminium, the cell comprising inert or substantially inert anodes, where an oxygen containing gas () evolved by the electrolysis process in the cell is gathered and removed therefrom. The oxygen containing gas is introduced into a combustion chamber () where it is reacted with a carbon containing gas () in a combustion process. Emisions of COand NOcan be reduced.