2778.     RAVIZZA, G.  [Refinery Gas as a Source of Methane.]  Atti III° convegno naz. metano, vol. 2, 1941, pp. 301-305; Chem. Zentralb., 1942, II, p. 1988; Chem. Abs., vol. 38, 1944, p. 3460.

        Dependent upon raw material used and the methods of refining, refinery gases have a variable composition but consist predominantly of CH₄ and contain no hydrocarbons with more than 6 C atoms.  Cracked gases contain, relatively, many unsaturated hydrocarbons, and hydrogenated gases virtually none.  Modern processes for treating refinery gases are discussed.  Gas with S removed, freed from gasoline, butane, and propane, consists essentially of CH₄ and can either be compressed and used as fuel gas or used for the preparation of H₂.  The economic fundamentals of getting CH₄ from refinery gas are discussed.