PATENT

3709. ----- [SULLIVAN, F.W.] (Hydrocarbon Research, Inc.).  Process for Catalytic Conversion of Carbon Monoxide and Hydrogen to Hydrocarbons or Oxygenated Hydrocarbons.  United States Patent 2,626,275, Jan. 20, 1953; appl. filed Feb. 18 1947, Serial No. 729,411; 5 claims (Cl. 260-449.6).  Chem. Abs., vol. 47, 1953, p. 6123.

Discrete particles of catalytically inert material with the same fluidizing characteristics as the catalyst particles is mixed with the catalyst.  By thus increasing the area of cooling surfaces, the maximum unit charging rate of reactants per unit of catalyst is increased without impairing conversion.  In an example, Fe catalyst of 200-mesh and finer, 60% passing through 325-mesh, pressure 250 p.s.i.g., space velocity 3,500 vol. per hr. per vol., and temperature of 625° F. are used.  When the Fe catalyst is diluted in the ratio of 1 part by settled volume to 4 parts of finely powdered Cu, the space velocity of the synthesis gas may be increased to 12,000 vol. per hr. vol., with the same pressure and temperature conditions as before.  In some instances it may be possible to raise the reaction temperature as much as 100° F. above the optimum for the catalyst in question.  6 United States patents cited.

-----. See abs. 1794.