Direct air capture reactor systems and related methods of transporting carbon dioxide
AssigneeBattelle Energy Alliance, LLC
InventorsDong Ding, Lucun Wang, Wei Wu
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Abstract
A direct air capture (DAC) reactor system is disclosed and comprises electrochemical cells. One or more of the electrochemical cells comprises a cathode, an anode, and an electrolyte membrane between the cathode and the anode. The electrolyte membrane is configured to transport carbonate ions and oxygenate ions from the cathode to the anode. Additional DAC reactor systems and methods of capturing carbon dioxide from a feedstream using the reactor systems are also disclosed.
Claims20
A direct air capture reactor system, comprising:
- electrochemical cells, one or more of the electrochemical cells comprising:
- a cathode;
- an anode;
- and
- an electrolyte membrane between the cathode and the anode, the electrolyte membrane configured to transport carbonate ions and oxygenate ions from the cathode to the anode.
A direct air capture reactor system, comprising:
- one or more electrochemical cells between a first chamber and a second chamber, the one or more electrochemical cells comprising:
- a cathode, an anode, and an electrolyte membrane between the cathode and the anode, the electrolyte membrane configured to transport carbonate ions and oxygenate ions across the electrolyte membrane from the first chamber to the second chamber.
A method of capturing carbon dioxide from a feedstream, comprising:
- introducing a carbon dioxide-containing feedstream to an electrochemical cell, the carbon dioxide-containing feedstream comprising less than about 1000 ppm of carbon dioxide and the electrochemical cell comprising a cathode, an electrolyte membrane adjacent to the cathode, and an anode adjacent to the electrolyte membrane;
- reacting the carbon dioxide of the carbon dioxide-containing feedstream at the cathode to produce carbonate ions;
- transporting the carbonate ions through the electrolyte membrane and to the anode;
- reacting the carbonate ions at the anode to produce carbon dioxide;
- and
- recovering the carbon dioxide as a concentrated carbon dioxide feedstream.
Dependencies are inferred from the claim text.