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PATENT 3492. ----- [STANDARD OIL CO.] Fuels. British Patent 631,319, Nov. 1, 1949. Chem. Abs., vol. 44, 1950, p. 3700. In the production of liquid and gaseous fuels by the conversion of carbonaceous materials into a gaseous mixture containing CO and H2 followed by the catalytic treatment of the mixture to produce normally liquid hydrocarbons and a fuel tail gas, the liquid gas product distribution is controlled by recovering the fuel tail gas, and a portion of this gas, in excess of the desired requirement for fuel gas, is recycled to the reaction for production of the CO-H2 mixture from carbonaceous material. The proportion of tail gas thus recycled may be altered from time to time in accordance with changing fuel requirements. |