Method and system for using the carbon oxide arising in the production of aluminium

• Main Authors: LEDUC, Marc, BODE, Andreas, ANTWEILER, Nicolai, SCHEIFF, Frederik, BUEKER, Karsten
• Format: Patent
• Language: English
• Published: 23.12.2021
• Subjects: APPARATUS THEREFOR; CHEMISTRY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; METALLURGY; PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS

The invention relates to a method for using the carbon oxide arising in the production of aluminium via the electrolytic reduction of aluminium oxide in the melt using at least one anode made of a carbon-containing material, wherein a pyrolytic carbon is used for the production of the at least one anode, wherein a pyrolysis (1) of hydrocarbons, in particular methane or natural gas, is carried out, in which pyrolytic carbon and hydrogen arise, and wherein, according to the invention, the hydrogen (4) arising in the pyrolysis of methane is mixed with carbon dioxide and/or carbon monoxide from the electrolytic production of aluminium in order to generate a gas flow (15) which is supplied for further application. The invention also relates to a system network comprising an electrolysis device (9) for producing aluminium via the electrolytic reduction of aluminium oxide in a melt, wherein the system network also comprises at least one reactor (1) in which pyrolytic carbon and hydrogen are generated via the pyrolysis of hydrocarbons.