Hydrocarbon production system and hydrocarbon production method

A hydrocarbon production system that generates a hydrocarbon having two or more carbon atoms from methane by an oxidative coupling reaction of methane,

• the hydrocarbon production system comprising:
• an oxidative coupling reaction device configured to perform an oxidative coupling reaction between methane and oxygen;
• a carbon dioxide separation device configured to separate carbon dioxide contained in a generated gas generated in the oxidative coupling reaction device;
• a methanation device configured to perform a methanation reaction between hydrogen and carbon dioxide;
• and
• a solar steam system configured to generate high-pressure steam by using thermal energy from sunlight.

A hydrocarbon production system that generates a hydrocarbon having two or more carbon atoms from methane by an oxidative coupling reaction of methane, the hydrocarbon production system comprising:

• an oxidative coupling reaction device configured to perform an oxidative coupling reaction between methane and oxygen;
• a carbon dioxide separation device configured to separate carbon dioxide contained in a generated gas generated by the oxidative coupling reaction device;
• a methanation device configured to perform a methanation reaction between hydrogen and carbon dioxide;
• and
• a water electrolysis device configured to generate oxygen and hydrogen from water by a water electrolysis reaction, and
• a cryogenic separation device configured to separate oxygen from air;
• and
• an oxygen separation device,
• wherein the oxygen separation device has an oxygen separation membrane configured to further separate high-purity oxygen from the oxygen containing nitrogen as a main component of an inert gas, which is separated by the cryogenic separation device.

A hydrocarbon production method for generating a hydrocarbon having two or more carbon atoms from methane by an oxidative coupling reaction of methane, the hydrocarbon production method comprising:

• a step of generating a hydrocarbon having two or more carbon atoms by an oxidative coupling reaction of methane;
• a step of separating an inert component from a raw gas containing the inert component;
• a step of separating carbon dioxide contained in a generated gas generated by the oxidative coupling reaction;
• and
• a step of generating methane from hydrogen and carbon dioxide by a methanation reaction, and
• a cryogenic separation step of separating oxygen from air;
• and
• an oxygen separation step of further separating high-purity oxygen by using an oxygen separation membrane from the oxygen containing nitrogen as a main component of an inert gas, which is separated by the cryogenic separation step.