Process for generating clean power and hydrogen

Patent metadata

Field	Value
Publication number	US-12428296-B1
Application number	US-202519204018-A
Country	US
Kind code	B1
Filing date	May 9, 2025
Priority date	May 10, 2024
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

Systems and systems to generate clean energy and for providing hydrogen capture and carbon capture sequestration are provided. Heat from partial oxidation of hydrocarbon fuel is used to generate clean power via one or more heat engines together with hydrogen capture and carbon capture sequestration.

First claim

I claim:

1. A method for generating energy, the method comprising:
partially oxidizing a hydrocarbon fuel and providing a partially oxidized gas stream, the partially oxidized gas stream comprising a volume quantity of hydrogen and a heat content;
introducing the partially oxidized gas stream to a heat engine;
at least partially separating hydrogen from the partially oxidized gas stream exiting the heat engine; and
generating an amount of energy from at least a portion of the heat content.

2. The method of claim 1 , wherein the partially oxidized gas stream further comprises a remainder volume quantity, the remainder volume quantity corresponding to a volume quantity of gas present in the partially oxidized gas stream other than the volume quantity of hydrogen.

3. The method of claim 2 , wherein the volume quantity of hydrogen is in excess relative to the remainder volume quantity in the partially oxidized gas stream.

4. The method of claim 1 , wherein the partially oxidized gas stream is introduced directly to the heat engine.

5. The method of claim 1 , wherein the partially oxidized gas stream is introduced directly to the heat engine at a temperature of between 1000-1600° C.

6. The method of claim 1 , wherein the partially oxidized gas stream is introduced directly to the heat engine at a temperature of between 1000-1600° C. and between 3-10 bar-g.

7. The method of claim 1 , further comprising compressing the partially oxidized gas stream exiting the heat engine.

8. The method of claim 1 , further comprising at least partially collecting and/or storing the hydrogen separated from the partially oxidized gas stream exiting the heat engine.

9. The method of claim 1 , further comprising sequestering at least a portion carbon dioxide from the partially oxidized gas stream.

10. A system for generating energy, the system comprising:
a partial oxidation unit (POX) configured to partially oxidize a hydrocarbon fuel and provide a partially oxidized gas stream comprising a volume amount of hydrogen and an amount of carbon monoxide (CO) therefrom; and
a heat engine operably coupled to the partial oxidation unit, the heat engine configured to receive a heat content from the partially oxidized gas stream and to generate an amount of energy proportional to the heat content received from the partially oxidized gas stream; and
a gas separator operatively coupled to the heat engine, gas separator configured to receive the partially oxidized gas stream exiting the heat engine, the gas separator configured to separate the hydrogen from the partially oxidized gas stream and provide a hydrogen rich stream and a carbon monoxide rich stream.

11. The system of claim 10 , wherein the heat engine comprises a free piston engine or a Stirling engine or linear generator.

12. The system of claim 10 , further comprising at least one additional heat engine configured to receive the essentially pure oxygen and the carbon monoxide rich stream.

13. The system of claim 10 , further comprising an oxy-combustor unit operably configured to receive the carbon monoxide rich stream wherein the oxy-combustor unit is coupled with the source of essentially pure oxygen, wherein the oxy-combustor unit is configured to combust at least a portion of the carbon monoxide rich stream and exit a high temperature rich carbon dioxide stream having a heat content.

14. A method of generating power, the method comprising the steps of:
partially oxidizing a hydrocarbon fuel with O2 (oxygen) to provide a partially oxidized product stream comprising H2 (hydrogen), CO (carbon monoxide), water with trace amounts of CO2 (carbon dioxide), the partially oxidized product stream having a heat content;
introducing the partially oxidized gas stream to at least one heat engine;
separating the H2 from the partially oxidized gas stream exiting the heat engine and providing a hydrogen rich stream and a CO rich stream; and
generating power from the heat engine using at least some of the heat content from the partially oxidizing gas stream.

15. The method of claim 14 , further comprising capturing and/or storing the hydrogen rich stream.

16. The method of claim 14 , further comprising oxidizing the CO rich stream with essentially pure oxygen and providing a rich CO2 stream.

17. The method of claim 16 , further comprising sequestering the rich CO2 stream.

Assignees

• Nucor Corp

Inventors

• Leveen Lindsay

Classifications

• B01D53/62

  Carbon oxides · CPC title

• F23L7/007

  Supplying oxygen or oxygen-enriched air · CPC title

• B01D53/002

  by condensation · CPC title

• B01D53/75

  Multi-step processes · CPC title

• C01B3/50

  Separation of hydrogen or hydrogen-containing gases from gaseous mixtures, e.g. purification · CPC title