Synthetic fuels and chemicals production with in-situ CO2 capture
AssigneeOhio State Innovation Foundation
InventorsLiang-Shih Fan, Fanxing Li, Liang Zeng
Life of this patent
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Abstract
Novel redox based systems for fuel and chemical production with in-situ CO2 capture are provided. A redox system using one or more chemical intermediates is utilized in conjunction with liquid fuel generation via indirect Fischer-Tropsch synthesis, direct hydrogenation, or pyrolysis. The redox system is used to generate a hydrogen rich stream and/or CO2 and/or heat for liquid fuel and chemical production. A portion of the byproduct fuels and/or steam from liquid fuel and chemical synthesis is used as part of the feedstock for the redox system.
Claims6
A method for producing a liquid fuel from a solid carbonaceous fuel comprising:
- pyrolizing a first portion of the solid carbonaceous fuel to form the liquid fuel;
- and
- indirectly gasifying a second portion of the solid carbonaceous fuel to form separate streams of hydrogen and CO2 rich gases by:
- reducing metal oxide containing particles in a first reaction zone with the second portion of the solid carbonaceous fuel thereby forming the CO2 rich gases and reduced metal oxide containing particles;
- directly sending a first portion of the reduced metal oxide containing particles from the first reaction zone to a second reaction zone, and a second portion of the reduced metal oxide containing particles from the first reaction zone to a third reaction zone;
- oxidizing the first portion of the reduced metal oxide containing particles in the second reaction zone with steam thereby generating the hydrogen rich gases and at least partially oxidized metal oxide containing particles;
- sending the at least partially oxidized metal oxide containing particles from the second reaction zone to the third reaction zone;
- oxidizing the at least partially oxidized metal oxide containing particles from the second reaction zone and the second portion of the reduced metal oxide containing particles from the first reaction zone in the third reaction zone with an oxygen containing gas, thereby generating oxidized metal oxide containing particles;
- and
- returning the oxidized metal oxide containing particles from the third reaction zone to the first reaction zone;
- and
- reacting hydrogen from the hydrogen rich gases with carbon dioxide from the CO2 rich gases in a CO2 hydrogenation reaction to form synthetic liquid fuel.
Dependencies are inferred from the claim text.