# US 10,865,346 B2 · Synthetic fuels and chemicals production with in-situ CO2 capture

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- Number: US 10,865,346 B2
- Document ID: US10865346B2
- Status: Granted
- Kind: B2
- Application number: 16/216,911
- Filed: 2018-12-11
- Published: 2019-06-06
- Granted: 2020-12-15
- Earliest claimed: 2009-09-08
- Assignees: Ohio State Innovation Foundation
- Applicants: Ohio State Innovation Foundation
- Inventors: Liang-Shih Fan; Fanxing Li; Liang Zeng
- Web page: https://patentgrep.com/patent/US10865346B2

## CPC

- C10G 1/02: by distillation
- C01B 3/344: {using non-catalytic solid particles}
- C10G 2/50: {from carbon dioxide with hydrogen}
- C10J 3/725: {Redox processes}
- C01B 2203/062: Hydrocarbon production, e.g. Fischer-Tropsch process
- C01B 2203/148: involving a recycle stream to the feed of the process for making hydrogen or synthesis gas
- C01B 2203/86: Carbon dioxide sequestration
- C10G 2300/1011: Biomass
- C10G 2300/807: Steam
- C10J 3/466: {Entrained flow processes}
- C10J 3/86: combined with waste-heat boilers
- C10J 2300/0916: Biomass
- C10J 2300/093: Coal
- C10J 2300/0959: Oxygen
- C10J 2300/1612: CO2-separation and sequestration, i.e. long time storage
- C10J 2300/1659: to liquid hydrocarbons
- C10J 2300/1678: with air separation
- C10J 2300/1807: Recycle loops, e.g. gas, solids, heating medium, water
- C10K 1/003: {of acid contaminants, e.g. acid gas removal}
- C10K 1/024: {by filtration}
- Y02P 20/145: the feedstock being materials of biological origin
- Y02P 30/00: Technologies relating to oil refining and petrochemical industry
- Y02P 30/20: using bio-feedstock
- C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- C10J: PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES (synthesis gas from liquid or gaseous hydrocarbons C01B; underground gasification of minerals E21B43/295); CARBURETTING AIR OR OTHER GASES
- C10K: PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## 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.

## Claims

### Claim 1

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.

### Claim 2 (depends on 1)

The method of claim 1, where the metal oxide containing particle is an iron oxide containing particle.

### Claim 3 (depends on 1)

The method of claim 1, where the metal oxide containing particles in the first reaction zone form a packed moving bed.

### Claim 4 (depends on 1)

The method of claim 1, where the first reaction zone is operated at a temperature of greater than or equal to 400° C. and less than or equal to 1200° C. and at a pressure of greater than or equal to 1.01×105 Pa and less than or equal to 8.10×106 Pa.

### Claim 5 (depends on 1)

The method of claim 1, where at least a portion of the carbon dioxide from the CO2 rich gases is sequestered.

### Claim 6 (depends on 1)

The method of claim 1, where at least a portion of the steam is generated using heat from the CO2 hydrogenation reaction.