Synthetic fuels and chemicals production with in-situ CO2 capture

• US 10,253,266 B2
• Filed: 12/12/2016
• Issued: 04/09/2019
• Est. Priority Date: 09/08/2009
• Status: Active Grant

• Current Assignee: Ohio State Innovation Foundation (Ohio State University)
• Original Assignee: Ohio State Innovation Foundation (Ohio State University)
• Inventors: Fan, Liang-Shih, Li, Fanxing, Zeng, Liang
• Primary Examiner(s): Hines, Latosha
• Application Number:
  US15/376,590
• Publication Number:
  US 20170158964A1
• Time in Patent Office: 848 Days
• CPC Class Codes: C01B 2203/062 Hydrocarbon production, e.g. Fischer-Tropsch process
• CPC Class Codes: C01B 2203/148 involving a recycle stream to the feed of the process for making hydrogen or synthesis gas
• CPC Class Codes: C01B 2203/86 Carbon dioxide sequestration
• CPC Class Codes: C01B 3/344 using non-catalytic solid particles
• CPC Class Codes: C10G 1/02 by distillation
• CPC Class Codes: C10G 2/50 from carbon dioxide with hydrogen
• CPC Class Codes: C10G 2300/1011 Biomass
• CPC Class Codes: C10G 2300/807 Steam
• CPC Class Codes: C10J 2300/0916 Biomass
• CPC Class Codes: C10J 2300/093 Coal
• CPC Class Codes: C10J 2300/0959 Oxygen
• CPC Class Codes: C10J 2300/1612 CO2-separation and sequestration, i.e. long time storage
• CPC Class Codes: C10J 2300/1659 to liquid hydrocarbons Fischer-Tropsch process C10G2/00
• CPC Class Codes: C10J 2300/1678 with air separation separating gases using rectification of air F25J3/04521
• CPC Class Codes: C10J 2300/1807 Recycle loops, e.g. gas, solids, heating medium, water
• CPC Class Codes: C10J 3/466 Entrained flow processes
• CPC Class Codes: C10J 3/725 Redox processes
• CPC Class Codes: C10J 3/86 combined with waste-heat boilers
• CPC Class Codes: C10K 1/003 of acid contaminants, e.g. acid gas removal
• CPC Class Codes: C10K 1/024 by filtration
• CPC Class Codes: Y02P 20/145 : the feedstock being materials of biological origin
• CPC Class Codes: Y02P 30/00 : Technologies relating to oil refining and petrochemical industry
• CPC Class Codes: Y02P 30/20 : using bio-feedstock

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 hydro genation, 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

1. A method for producing a liquid fuel from a solid carbonaceous fuel comprising:

directly liquefying a first portion of the solid carbonaceous fuel with a hydrogen rich gas stream 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.

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

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

4. 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.

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

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