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Patent Abstracts

      505. DORNDORF, H., KELTING, M., AND TRAMM, H.  Apparatus Suitable for Catalytic Synthesis of Hydrocarbons From Hydrogen and Carbon Monoxide.  United States Patent 2,148,545. Feb. 25, 1939: appl. filed June 17, 1936.  Chem. Abs., vol. 33, 1939, p. 3809.

            Gas-reaction apparatus, adapted for precise temperature control as required for the synthetic production of benzine hydrocarbons from H2 and a C oxide, comprises a gastight casing having opposed end walls defining a catalytic chamber: a plurality of superposed rows of cooling tubes extending substantially horizontally through the casing and through the end walls thereof, the outer ends of several pluralities of adjoining tubes being connected to form several coils: thin heat conductive plates extending in closely spaced juxtaposition through the whole length of the catalytic chamber in the direction of flow of the reaction gas and substantially throughout the entire width of the chamber substantially at right angles to and traversed by the cooling tubes, the plates forming head-abducting elements and defining narrow shafts: thin layers of a catalyst arranged within the shafts intermediate to the plates; and means for passing the gas to be reacted through the apparatus in the direction of the plates.