2882.----- [RUHRCHEMIE A. G.] Catalytic Hydrogenation of Carbon Monoxide. British Patent 680, 241, Oct. 1, 1952, Chem. Abs., vol. 47, 1953, p. 5099.

Describes apparatus for maintaining the inlet of a reactor cooler than the outlet. A fluid cooling agent (I) is passed through a reactor in indirect heat transfer with the catalyst. (I) passes through 2 or more cooling zones in series, the cooling zones being connected to each other through a throttling valve so as to produce a progressive decrease in pressure from 1 cooling zone to the next in the direction of flow of (I).