3406.     TIMELL, T.  [Liquid Fuels From Synthesis Gas.]  Tek. Tid., vol. 46, 1948, pp. 813-818; Chem. Zentralb., No. 3, 2949, p. E234.

        Review of the Fischer-Tropsch process for producing hydrocarbons from CO and H2 and of the production of synthesis gas by the method developed in the United States by the oxidation of natural gas with O2 under pressure.  Natural gas preheated to about 650° is oxidized at 20 atm. and 1,300° according to the equation CH4+1/2 O2=CO+2H2.  The CO2 formed is washed out and a part of the residual gas is converted at 300°-400° over Fe oxide into the desired ratio of CO:H2.  The synthesis itself is carried out at 17-35 atm. and about 300° in presence of finely pulverized Fe catalysts suspended in the synthesis gas and steam.  From 3,000,000 m.3 of natural gas there are produced daily 700 tons of gasoline (octane No. 80), 150 of light oil, and 130-160 of byproducts, such as alcohols, ketones, aldehydes, and carboxylic acids.  The production cost per l. of liquid hydrocarbons is 5 öre, as compared with 19 by the German process.  A simplified process for synthesis from coal is under development in the United States.