High temperature electrolysis for syngas production
View Patent ↗Syngas components hydrogen and carbon monoxide may be formed by the decomposition of carbon dioxide and water or steam by a solid-oxide electrolysis cell to form carbon monoxide and hydrogen, a portion of which may be reacted with carbon dioxide to form carbon monoxide. One or more of the components for the process, such as steam, energy, or electricity, may be provided using a nuclear power source.
1. A method for producing at least one syngas component, comprising:
directly exposing water and carbon dioxide to heat generated by a nuclear power source to produce a feed stream comprising steam and the carbon dioxide;
combining the feed stream with nitrogen and hydrogen to produce an inlet stream comprising the steam, the carbon dioxide, the hydrogen., and the nitrogen:
introducing the inlet stream to a cathode side of at least one solid-oxide electrolysis cell;
supplying an electrical current produced by the nuclear power source to the at least one solid-oxide electrolysis cell to decompose the steam and the carbon dioxide of the inlet steam with the at least one solid-oxide electrolysis cell to produce hydrogen and carbon monoxide; and
selecting a magnitude of the electrical current supplied to the at least one solid-oxide electrolysis cell to produce the hydrogen and the carbon monoxide at a ratio of about 2 to 1.
2. The method of claim 1 , further comprising selecting the nuclear power source from the group consisting of a nuclear power plant, a nuclear power facility, a nuclear battery, and a portable nuclear power source.
3. The method of claim 1 , wherein introducing the inlet stream to a cathode side of at least one solid-oxide electrolysis cell comprises introducing the inlet stream to cathode sides of at least one array of solid-oxide electrolysis cells located in proximity to the nuclear power source.
4. The method of claim 1 , further comprising configuring the at least one solid-oxide electrolysis cell to comprise:
a cathode;
an anode; and
an electrolyte positioned between the cathode and anode.
5. The method of claim 4 , further comprising selecting a nickel-zirconia cermet material to comprise the cathode.
6. The method of claim 4 , further comprising selecting a strontium doped lanthanum manganite material to comprise the anode.
7. The method of claim 4 , further comprising selecting yttria stabilized zirconia material to comprise the electrolyte.
8. The method of claim 1 , further comprising increasing the electrical current to increase a concentration of the hydrogen and the carbon monoxide produced by the at least one solid-oxide electrolysis cell.
9. The method of claim 8 , wherein increasing the electrical current comprises increasing the electrical current to greater than about 2 amps.
10. The method of claim 1 , further comprising routing the hydrogen and the carbon monoxide to a synfuel production process.
11. The method of claim 1 , further comprising reacting at least a portion of the hydrogen with the carbon dioxide to produce carbon monoxide.
12. The method of claim 1 , further comprising producing the carbon dioxide by combusting materials using the heat generated by the nuclear power source.
13. The method of claim 11 , further comprising collecting the carbon monoxide.
14. The method of claim 1 , further comprising producing the carbon dioxide as an off-gas or waste gas in a manufacturing process.
15. The method of claim 1 , wherein directly exposing water and carbon dioxide to heat generated by a nuclear power source to produce a feed stream comprises directly exposing water and carbon dioxide to heat generated by a nuclear power source to produce a feed stream having a temperature of between about 800° C. and about 1000° C.
16. A process for producing hydrogen and carbon monoxide, comprising:
directly exposing water and carbon dioxide to heat generated by a nuclear power source to produce a feed stream comprising steam and carbon dioxide;
combining the feed stream with nitrogen and hydrogen to produce an inlet stream comprising the steam, the carbon dioxide, the hydrogen, and the nitrogen;
introducing the inlet stream to a cathode side of at least one solid-oxide electrolysis cell to decompose the steam into hydrogen and oxygen ions and the carbon dioxide of the inlet stream into carbon monoxide; and
providing an electrical current produced by the nuclear power source to the at least one solid-oxide electrolysis cell; and
selecting a magnitude of the electrical current provided to the at least one solid-oxide electrolysis cell to produce the hydrogen and the carbon monoxide at a ratio of about 2 to 1.
17. The process of claim 16 , wherein directly exposing the water and carbon dioxide to heat generated by a nuclear power source to create a feed stream comprises heating water and the carbon dioxide to produce a feed stream having a temperature of and having a temperature of between about 800° C. and about 1000° C.
18. The process of claim 16 , further comprising combusting a fuel using the heat from the nuclear power source to produce the carbon dioxide.
19. The process of claim 16 , further comprising providing a carbon dioxide source to supply the carbon dioxide, wherein the carbon dioxide source is selected from the group consisting of a combustion process, a cement clinker process, a petrochemical refining process and a carbon dioxide storage facility.
20. The method of claim 4 , further comprising collecting oxygen from the anode.
21. The method of claim 16 , further comprising increasing the electrical current provided. to the at least one solid-oxide electrolysis cell to increase a concentration of the hydrogen and the carbon monoxide produced by the at least one solid-oxide electrolysis cell.
22. The method of claim 1 , further comprising exposing at least one of the hydrogen and the carbon monoxide to heat from the nuclear power source.