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US 11,713,285 B2Granted
Methanation and recovery method, system, and apparatus
AssigneesShahar Golan Technology Soultions, Ltd., Ariel Scientific Innovations Ltd.
InventorsNatan Shahar, Avshalom Davidesko, Ilia Ulitsin
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Abstract
A method, a system, and an apparatus of certain embodiments are provided to recover water and carbon dioxide from combustion emissions. The recovery includes, among other things, electrolysis and carbon dioxide capture in a suitable solvent. The recovered water and carbon dioxide are subject to reaction, such as a catalytic methanation reaction, to generate at least methane.
Claims20
A method comprising:
- receiving a hydrocarbon combustion exhaust stream comprising water and carbon dioxide in a first chamber containing liquid water;
- conveying methanation reaction products through a first heat exchanger of the first chamber to transfer heat from the methanation reaction products to the liquid water;
- and
- subjecting the heated liquid water to electrolysis in the first chamber to generate hydrogen and oxygen.
1 more element
A method comprising:
- subjecting liquid water in a first chamber to electrolysis to generate hydrogen and oxygen;
- capturing carbon dioxide in a solvent;
- conveying the solvent and the captured carbon dioxide through a first heat exchanger of the first chamber;
- and
- conveying methanation reaction products through a second heat exchanger of the first chamber to transfer heat from the methanation reaction products to the liquid water in the first chamber and to the solvent conveyed through the first heat exchanger of the first chamber, wherein the first and second heat exchangers comprise a common heat exchanger or different heat exchangers.
2 more elements
A method comprising:
- receiving a hydrocarbon combustion exhaust stream comprising water and carbon dioxide in a chamber containing liquid water;
- passing methanation reaction products through a first heat exchanger of the chamber to transfer heat from the methanation reaction products to the liquid water, the methanation reaction products comprising methane and gaseous water;
- subjecting the heated liquid water to electrolysis in the chamber to generate hydrogen and oxygen;
- capturing the carbon dioxide in a solvent;
- heating the solvent with the captured carbon dioxide in a second heat exchanger of the chamber, wherein the first and second heat exchangers comprise a common heat exchanger or different heat exchangers;
- separating at least a portion of the carbon dioxide from the heated solvent;
- and
- reacting at least the hydrogen generated by the electrolysis and the carbon dioxide separated from the heated solvent in a methanation reactor to generate one or more hydrocarbons.
5 more elements
Dependencies are inferred from the claim text.