3471. ------. [SOCIETA ANON. PRODOTTI ITALIANI SINTETICI.] Catalytic Manufacture of Hydrocarbons and Oxygenated Hydrocarbons. British Patent 625,841, July 5, 1949; appl. filed Oct. 2, 1946. Fuel Abs., 1949, No. 5,011. Chem. Abs., vol. 44, 1950, p. 22

PATENTS

3471. ------. [SOCIETA ANON. PRODOTTI ITALIANI SINTETICI.] Catalytic Manufacture of Hydrocarbons and Oxygenated Hydrocarbons. British Patent 625,841, July 5, 1949; appl. filed Oct. 2, 1946. Fuel Abs., 1949, No. 5,011. Chem. Abs., vol. 44, 1950, p. 2205.

CO and H₂ are reacted in the presence of a powdered Fe catalyst, which is maintained in the reaction zone in the form of a dense fluid mass in the reactant gases. The reaction zone is kept at an elevated temperature under superatmospheric pressure. The contaminated catalyst is withdrawn and conveyed into a separate hydrogenation zone where it is kept under dense fluidized suspension at about 900° F. for enough time to effect removal of at least 80% of the contaminants, after which it is returned to the reaction zone.