Combinations of carbon monoxide and hydrogen and carbon dioxide and hydrogen can be catalytically converted to methane (natural gas). Typically this is done to remove trace amounts of carbon oxides from hydrogen streams used in, for instance, ammonia production.
Hydrogen is currently produced by two methods: 1) steam methane reforming SMR of massive volumes natural gas and 2) electrolysis of water which is already to expensive for the refining industry. Steam reformation of natural gas is by far the most prevalent method of producing hydrogen for such uses as the upgrading of heavy oil, sulphur removal and refining operations.
Modular liquid fuel production via gasification of abundant carbonaceous feed-stocks is the holy grail of gasification. The reason for this is that small systems capable of converting coal, lignite and waste streams such as municipal solid waste (MSW), wood chips or cow manure into liquid fuels would be capable of being deployed at virtually any location and convert a feedstock into a valuable, transportable liquid fuel.
Electrical production via gasification of abundant carbonaceous feed-stocks such as coal, lignite, petroleum coke, wood waste, plastics, MSW (municipal solid waste) is the easiest use of a gasifier.