PATENT

3626. ----- [STEINSCHLAEGER, M.]  {Process for the Synthetic Manufacture of Hydrocarbon Oils.  United States Patent 2,630,447, Mar. 3, 1953; appl. filed July 15, 1947, Serial No. 761,022; 2 claims (Cl. 260-449.6). 

Snythesis gas with CO:H₂ ratio of1:1.5-2:1 by volume is produced by reacting fixed hydrocarbon gases with CO₂ of residue gas produced in the CO-H₂ reaction.  The synthesis gas is reacted in presence of Co, Ni, or Fe catalysts at 150°-400° C.  The liquetiable olefin-rich hydrocarbons are separated from the residual gas.  A large part of the CO₂ is separated from the residual gas and recycled to the initial gas-forming stage.  The remainder of the residual gas is mixed with the synthesis gas and catalytically reformed to give a second synthesis gas mixture of controlled CO:H₂ ratio that is further synthesized.  Successive CO₂ recycling, synthesis gas reforming, and hydrocarbon synthesis steps are repeated until the inert content of the residual gases has built up to the point where the yield of Olelfin-rich liquid hydrocarbons is substantially lowered.  6 United States patents cited.