Method for producing synthetic fuel

A method for improving a synthetic fuel production facility to reduce an amount of atmospheric emission of carbon dioxide generated in an apparatus of an existing synthetic fuel production facility,

• the existing synthetic fuel production facility comprising:
• a gasification apparatus for gasifying waste by reacting the waste, oxygen and water at a high temperature to produce a gasified gas containing carbon dioxide, carbon monoxide and hydrogen;
• a carbon dioxide separation apparatus for separating carbon dioxide at least from the gasified gas produced in the gasification apparatus;
• and
• an FT synthesis apparatus for producing a synthetic fuel by Fischer-Tropsch synthesis from a synthetic gas from which carbon dioxide has been separated in the carbon dioxide separation apparatus,
• the method comprising the steps of:
• adding to the facility, a carbon dioxide electrolysis apparatus for electrolyzing the carbon dioxide separated in the carbon dioxide separation apparatus to produce an electrolyzed gas containing carbon monoxide and carbon dioxide;
• and
• supplying the electrolyzed gas produced in the carbon dioxide electrolysis apparatus to the carbon dioxide separation apparatus such that carbon dioxide is separated from the gasified gas and the electrolyzed gas.