PATENT

3426. ----- [SOCIÉTÉ L’AIR LIQUIDE.]. Heat-Exchange System for Catalytic Processes.  British Patent 275,592, Aug. 9, 1926.  Chem. Abs., vol. 22, 1928, p. 2248.

Processes such as the NH₃ synthesis described in British Patent 268,722 (abs. 3429) may be modified by passing the reaction products through the reaction chamber in such a way that they absorb heat from the hottest zone of the catalyst.  Describes an apparatus and other modifications.