Return to Abstracts of Patents Return to Abstracts of Patents 750-999 Patent Abstracts944. HÄUBER, H., AND HIRSCHBECK, J. (I. G. Farbenindustrie A. G.). Ethylene From Saturated Hydrocarbons. United States Patent 2,154,676, Apr. 18, 1939. Chem. Abs., vol. 33, 1939, p. 5416. Describes arrangement of apparatus and a process for producing C2H4, which comprises cracking saturated hydrocarbons such as C3H8 to form a substantial amount of C2H4, removing from the cracked product any compounds containing triple C linkages and also substances liquid under ordinary conditions of temperature and pressure, treating the remaining gases containing C2H4 together with higher olefins with an ammoniacal cuprous salt solution, thereby separating the olefins from the gases, expelling the olefins from the solution and then separating them by distillation into C2H4 and higher olefins, passing the higher olefins, together with the part of the gases not having been absorbed by the amoniacal cuprous salt solution at an elevated temperature over a hydrogenating catalyst and subjecting the hydrogenated gas after removal of CH4, if any is present, again to cracking to form a substantial amount of C2H4. |