1717. ------. [INTERNATIONAL HYDROCARBON SYNTHESIS CO.] [Synthesis of Hydrocarbons From Carbon Monoxide and Hydrogen.] Italian Patent 390,547, May 5, 1941. Chem. Zentralb., 1943, II, p. 1254.

Part of the reaction gases is recycled through the reaction zone, and fresh gas is introduced into the cycle by means of an injector instead of the previously used blast. The recycle gas may thereby contain some of the reaction products and hence does not especially need to be cooled.