PATENT

3481. ----- [STANDARD OIL CO.]  [Catalytic Synthesis of Hydrocarbons.]  German Patent 811, 347, Aug. 20, 1951; appl. filed Nov. 1, 1949 (Cl. 12 o).  Chem. Zentralb., 1952, I, p. 951.

Hydrocarbons are synthesized from gas mixtures containing CO and H₂ with powdered Fischer-Tropsch catalyst and flowing upward through a reaction zone maintained under suitable temperature and pressure at such a velocity that the powdered catalyst is a dense turbulent state suspended in the flowing gas.  The powdered catalyst is in particle sizes in microns as follows:  0-20μ < 25%, 20-80μ 30-85%, larger than 80μ< 45%.  The gas velocity lies between 6 and 305 cm. per sec., the reaction temperature 176°-357°, and the pressure above normal.  The reaction temperature and pressure depend upon the type of catalyst used (Fe or Co).  The process yields both hydrocarbons and O-containing products.