Useful hydrocarbon production method and useful hydrocarbon production apparatus

Abstract

Provided is a useful hydrocarbon production method including: a methanation step for generating a first gas containing methane from a mixed gas containing hydrogen and carbon dioxide; a dry reforming step for generating a second gas containing carbon monoxide and hydrogen from the first gas; a useful hydrocarbon generating step for generating a third gas containing a useful hydrocarbon from the carbon monoxide and hydrogen in the second gas; and a recycling step of separating a dry reforming recycle gas containing at least carbon dioxide from the third gas, and supplying the dry reforming recycle gas to the dry reforming step.

Dependencies are inferred from the claim text.