329. ENTER, M. T. (Standard Oil Co. of Indiana). Hydrocarbon Synthesis. United States Patent 2,500,516, Mar. 14, 1950; appl. Filed Dec. 21, 1944, Serial No. 569,237: 2 claims (Cl. 260-449.6). Chem. Abs., vol. 44, 1950, p. 6106.

Patent Abstracts

329. ENTER, M. T. (Standard Oil Co. of Indiana). Hydrocarbon Synthesis. United States Patent 2,500,516, Mar. 14, 1950; appl. Filed Dec. 21, 1944, Serial No. 569,237: 2 claims (Cl. 260-449.6). Chem. Abs., vol. 44, 1950, p. 6106.

Natural Gas is first freed from H₂S and organic S compounds by scrubbing with solvent such as mono- or triethanolamine, followed, if necessary, by scrubbing with a strong caustic solution. The gas is then mixed with CO₂ and steam to give a mixture of atomic H:C:O: :4:1:1. The mixture is re-formed to H₂:CO: :2:1, Heat for the re-forming is supplied by burning part of the desulfurized gas with recycle gas. Heat from the flue gas may be used for preheating air to be charged to the burner. The reactor is a vertical tower filled with vertical tubes 2-12 in. in diameter. The tubes are surrounded by a heat exchange fluid such as H₂O. Since each particle of catalyst is enveloped by gas and is in rapid motion, no hot spots develop. The time of contact between catalyst and synthesis gas is 20-25 sec. For light liquid products the pressure is 10-15 p. s. i., for heavier hydrocarbons and waxes lower temperature and higher pressure are used. All of the products are valuable for chemical synthesis as they are aliphatic. 9 United States patents cited.