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Patent Abstracts

      1181.  ------.[I. G. Farbenindustrie, A. G. Alcohols]  Catalytic Gas Reactions.  British Patent 495,129, Nov. 8, 1938.  Chem. Abs., vol. 33, 1939, p. 2777.

            Reactions are effected under pressure in a number of cycles connected in parallel, each cycle comprising a pump, catalyst chamber, cooler, and separator.  Foreign gases are eliminated by washing with the liquefied reaction product in a tower connected in parallel with the end cycle.  Make-up gas is added to only a part of the cycles at the opposite end of the system.  The invention is applicable to NH₃ synthesis, destructive hydrogenation, and MeOH synthesis.