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Return to Abstracts of Patents Return to Abstracts of Patents 1000-1249 Patent Abstracts1017. ------ [HERBERT, W.]. (Metallgesellchaft A. G.). [Producing High-Boiling Hydrocarbons, Mainly Paraffins, by the Catalytic Conversion of Gases Containing Carbon Monoxide and Hydrogen.] German Patent 744,077, Jan. 11, 1944; appl. M 138,697, July 18, 1937 (Cl. 12 o-1.03). FIAT Reel AA 89, frames 131-133, PB 70,274; TOM Reel 35, item 64, 7 pp. Gives process for producing high-boiling hydrocarbons, mainly paraffin, by catalytic conversion of CO and H2 at raised pressure in the gas phase in converters with close-lying cooling elements. The paraffin is continuously removed as formed. A catalyst that contains > 40% of a hydrogenating metal is used, and the time of contact of the gas with the catalyst is 3-10 minutes. A synthesis gas is used that contains > 1 part of CO : 2 of H2 and the sum total of the CO and H2 is over 90%. Example: 1 m.3 of a granular catalyst consisting of Co : ThO2 : kieselguhr in proportions, by weight, of 100 : 18 :80 was packed into an inner element-cooled converter, and a synthesis gas of composition CO, 40.8%; H2, 49.5%; CO2 6.5%; CH4 0.3%; and N2, 2.9% passed through it at the rate of 100 N m.3 of catalyst per hr., at a pressure of 12 atm. and a temperature of 186°. The yield under these conditions was 137 gm. of product per N m.3 of CO+H2 converted consisting of 58% paraffin, 22% higher-boiling oils, and 20% gasoline. Under the same conditions but with a catalyst consisting of 35 parts by weight of support material to 100 parts of Co, the yield was 143 gm. of liquid product consisting of 72% paraffin, 16% higher-boiling oils, and 12% gasoline. Merely spraying instead of cooling the catalyst with a solvent liquid in accordance with French Patent 814,853 (abs. 1275), cut down the yield greatly and resulted in the recovery of only a very small amount of paraffin. |