Methods and systems for producing synthetic fuel
View Patent ↗Methods and systems for producing a synthetic fuel are disclosed. In some embodiments, the methods and systems include the following: thermally reforming methane and carbon dioxide to generate a syngas including a first quantity of carbon monoxide and a first quantity of hydrogen; oxidizing the quantity of first carbon monoxide with a metal to produce metal oxide and carbon thereby separating oxygen from the carbon monoxide; gasifying the carbon using steam to produce a second quantity of carbon monoxide and a second quantity of hydrogen; reacting the metal oxide with methane to produce metal oxide, carbon dioxide, and a third quantity of hydrogen; and synthesizing the first quantity of carbon monoxide, the first quantity of hydrogen, the second quantity of hydrogen, and the third quantity of hydrogen to form the synthetic fuel.
1. A method of producing a synthetic fuel, said method comprising:
thermally reforming methane and carbon dioxide to generate a syngas including a first quantity of carbon monoxide and a first quantity of hydrogen;
oxidizing a first portion of said quantity of first carbon monoxide with a metal to produce metal oxide and carbon thereby separating oxygen from said carbon monoxide;
gasifying said carbon using steam to produce a second quantity of carbon monoxide and a second quantity of hydrogen;
reacting said metal oxide with methane to produce metal oxide, carbon dioxide, and a third quantity of hydrogen; and
synthesizing a second portion of said first quantity of carbon monoxide, said first quantity of hydrogen, said second quantity of hydrogen, and said third quantity of hydrogen to form said synthetic fuel;
wherein said synthetic fuel includes at least one of methanol (CH 4 O), ethylene (C 2 H 4 ), ethanol (C 2 H 6 O), and butanol (C 4 H 10 O).
2. The method of claim 1 , further comprising:
wherein said carbon dioxide used to generate said syngas is from at least one of a biogas produced from anaerobic digestion, natural gas fields, carbon dioxide captured from atmospheric air, and a combination of one or more thereof.
3. The method of claim 1 , further comprising:
wherein said methane used to generate said syngas is from at least one of methane contained in a stranded natural gas well, a biogas produced from anaerobic digestion, and a combination of one or more thereof.
4. The method of claim 1 , wherein said metal is ferrous oxide (FeO) or ferrous ferric oxide (Fe 3 O 4 ).
5. The method of claim 3 , wherein said metal is mechanically milled to a particle size of less than 10 μm.
6. The method of claim 1 , wherein said syngas includes equal moles of carbon dioxide and methane.