2022. ------. [LAYNG, E. T.] (Hydrocarbon Research, Inc.). Synthesis of Hydrocarbons With Sulfur-Containing Catalyst. United States Patent 2,446,426, Aug. 3, 1948; appl. filed Mar. 1, 1946, Serial No. 651,291; 8 claims (Cl. 260-449.6). Chem. Abs., vol. 42, 1948, p. 7958.

Synthesis gas having a sulfur content of 0.5 mol. %, determined on the basis of H₂S, is admitted at the bottom of an internally cooled reactor. Fe powder in fluidized state is used as catalyst. The production of CO₂ will decrease; the production of H₂O vapor will increase. The molecular weight of hydrocarbon product and its degree of unsaturation will increase until a stage is reached where the proportion of S accumulation upon the catalyst poisons the catalyst. When optimum conditions have been reached, just before this point, the use of the relatively high S synthesis gas is terminated and a synthesis gas free of S is substituted or a feed gas subjected to rigid purification is used. In the latter case, the catalyst mass is treated intermittently to keep the mass within optimum range of S content. 1 United States patent and 2 foreign patents cited.

See abs. 733, 734, 735.