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US 12,460,310 B2Granted
Integrated systems employing carbon oxide electrolysis in aluminum production
AssigneeTwelve Benefit Corporation
InventorEnrique Cintron
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Abstract
Integrated systems may be characterized by: (a) an aluminum production subsystem comprising an aluminum-producing electrolysis cell configured to electrolytically produce aluminum metal from an aluminum compound; and (b) a carbon dioxide reduction subsystem comprising a carbon dioxide electrolyzer, where the carbon dioxide reduction subsystem is configured to receive carbon dioxide produced by the aluminum production subsystem and provide the carbon dioxide to the carbon dioxide electrolyzer for reduction to a carbon-containing product.
Claims20
A system comprising:
- an aluminum production subsystem comprising an aluminum-producing electrolysis cell configured to electrolytically produce aluminum metal from an aluminum compound;
- a carbon dioxide reduction subsystem comprising a carbon dioxide electrolyzer, wherein the carbon dioxide reduction subsystem is configured to receive carbon dioxide produced by the aluminum production subsystem and provide the carbon dioxide to the carbon dioxide electrolyzer for reduction to a carbon-containing product, wherein the carbon-containing product comprises carbon monoxide;
- a carbon dioxide separator configured to remove carbon dioxide from the carbon monoxide produced by the carbon dioxide electrolyzer;
- a carbon dioxide recycle loop configured to recycle at least a portion of the removed carbon dioxide to the carbon dioxide electrolyzer;
- and
- a hydrogen separator configured to remove molecular hydrogen from the carbon monoxide produced by the carbon dioxide electrolyzer, wherein the aluminum production subsystem is configured to receive the carbon monoxide from the carbon dioxide reduction subsystem.
3 more elements
A method of producing aluminum metal, the method comprising:
- producing aluminum metal from an aluminum compound using an aluminum production subsystem comprising an electrolysis cell, wherein producing the aluminum metal generates carbon dioxide;
- providing the carbon dioxide to a carbon dioxide electrolyzer;
- electrolytically reducing the carbon dioxide to a carbon-containing product using the carbon dioxide electrolyzer, wherein the carbon-containing product comprises carbon monoxide;
- and
- delivering the carbon monoxide produced by the carbon dioxide electrolyzer to the aluminum production subsystem;
- wherein, prior to the delivering, the method comprises:
- removing carbon dioxide from the carbon monoxide produced by the carbon dioxide electrolyzer, wherein at least a portion of the removed carbon dioxide is recycled to a cathode inlet of the carbon dioxide electrolyzer;
- and
- removing hydrogen from the carbon monoxide produced by the carbon dioxide electrolyzer.
6 more elements
Dependencies are inferred from the claim text.