Patent ID: 7364650

Claim:
A process for the production of an upgraded synthetic gasoline comprising: a) contacting the synthesis gas stream at an elevated temperature and pressure with a Fischer-Tropsch catalyst in a Fischer-Tropsch reactor to generate a hydrocarbon product stream comprising hydrocarbons having a chain length of between 1 to 30 carbon atoms; b) passing at least a portion of the hydrocarbon product stream to a cracking reactor wherein the hydrocarbon product stream is contacted with a cracking catalyst under conditions which provide a synthetic gasoline stream consisting essentially of hydrocarbons having a chain length of between 1 to 12 carbon atoms; c) separating the synthetic gasoline stream produced in step (b) to provide at least one stream comprising hydrocarbons containing less than 6 carbon atoms and at least one stream comprising hydrocarbons containing at least 6 carbon atoms; d) passing the stream comprising hydrocarbons containing less than 6 carbon atoms to an oxygenating reactor wherein it is reacted with oxygenates to produce a stream comprising ethers; e) blending at least a portion of the stream comprising ethers with the stream comprising hydrocarbons containing at least 6 carbon atoms to produce an upgraded synthetic gasoline; wherein the cracking reaction is carried out at a temperature of 250-450° C.