PATENTS

      1471.  ------.  [I. G. FARBENINDUSTRIE, A. G.]  [Producing Oxygenated Compounds.]  German Patent Appl. I 74,142. OZ 13,947. filed Jan. 23, 1943 (Cl. IV d-12 o).  FIAT Reel 169. frames 8,186-8,190: PB 25,613: TOM Reel 36, item 21. bag 3,454. 5 pp.: Meyer Transl. PC-S-V, Oxo, vol. 1. chap. 28, 1948. p. 68.

            In producing oxygenated compounds by the reaction between CO, H₂ and olefinic compounds with double bonds in presence of catalysts containing metals of the 8^th group, the conversion is performed in a tube coil in such a manner that the raw materials pass through in the same direction as the catalyst.  Example: A slurry, consisting of 97 parts of an olefinic hydrocarbon mixture, b. 215º-235º with I number 70, and 3 parts of a catalyst containing 35% Co and some ThO₂ as promoter, is continuously pumped into a high pressure pipe coil consisting of 3 parts, 2 parts of 24 mm. inside diameter and 1 of 45 mm., each section being 10 in. long.  The separate parts are joined by pipes 60 mm. i. d., and these carry the gas-inlet nozzle.  For the 1^st 2 sections, which are maintained at temperatures of 128º and 138º, boiling H₂O circulating around the outside serves as the cooling medium, and the last section is kept at 150º by being immersed in a bath of tricresylphosphate.  Into the 1^st coil are injected hourly 6 m.3 of water gas and into each of the other 2 coils 7.5 m.3.  Through the coils are pumped 100 1. of slurry per hr., thus giving a contact times of about 14 min.  In spite if this short contact time more than 96% conversion of the charge into oxygenated compounds is attained.