PATENTS

      3009.  ------.  [RUHRCHEMIE A. G.]  [Process for Carrying Out the Hydrogenation of Carbon Monoxide With Production of a Residual Gas Suitable for City and Grid Gas.]  German Appl. R 109,851, R 566, filed Apr. 17, 1941 (Cl. IV d-12 o).  TOM Reel 177, frames 1,724-1,727; Meyer Transl.  PC-S-II, Fischer-Tropsch, vol. 1, chap. 54, 1948, p. 138.

            In obtaining a residual gas of a composition suitable for city gas in connection with the catalytic conversion of CO and H₂ into hydrocarbons, use is made of the alkalized hydrogenation catalysts by means of which the ratio of CO : H₂ consumption is so regulated and the reaction gas so converted that the end gas shows the correct content of H₂ and CO as specified by the Ott number for city gas.  Example: 100 l. of synthesis gas of given composition (CO₂, 3.1%; C_mH_n, 0.5%; CO, 31.7%; H₂, 39.8%; CH₄, 22.6%, N₂, 2.3%) per l. of catalyst (100 Fe, 10 Ca, 5 Cu, 100 kieselguhr) was converted at 230°-250° into hydrocarbons and an end gas of composition CO₂, 4.0; C_mH_n, 0.7; CO, 18.6; H₂, 32.4; CH₄, 40.3; N₂, 4.0; 55.90 kg. cal. per N m.³, gas contraction 33%.  The conversion of CO into CH₄ amounted to 7% and the total conversion to 65%.  Both the increase of CO consumption and the desired maintenance of H₂ enrichment were effected by increasing the alkalinity of the catalyst.