PROCESS FOR PRODUCTION OF SYNGAS AND FUELS FROM CARBON DIOXIDE USING OXYFUEL COMBUSTION

Syngas and liquid hydrocarbons are produced from synthesis gas. The synthesis gas is produced from a feed mixture of hydrogen and carbon dioxide. The feed mixture is heated to the reverse water gas shift (RWGS) reactor inlet temperature of 1400 to 1800°F or even more preferred to a RWGS reactor inlet temperature of 1550 to 1650°F. Some of the heat required to heat the feed mixture to the RWGS inlet temperature is supplied by the oxyfuel combustion of hydrogen or fuel with oxygen and minimizes the load onto electrical heaters or need for gas fired geaters. The high inlet temperature allows a high conversion of carbon dioxide to carbon monoxide. Various fuels can be used including hydrogen, hydrocarbons, oxygenates, or carbon monoxide can be used as combustion fuel. The carbon monoxide produced can further be reacted with hydrogen to produce hydrocarbon fuels and chemicals. The hydrocarbon fuels produced include sustainable aviation fuel (SAP) that meets ASTM D7566 specification and diesel fuel that meets ASTM D975 specification. The hydrogen and oxygen are produced from the electrolysis of water. The carbon dioxide can be captured from industrial point sources such as power plants, ethanol plants, steel mills, or other producers of carbon dioxide. Alternatively, the carbon dioxide can be captured from the atmosphere.