886. GRISENTHWAITE, A. T., AND RUSCHIN, K. (Power-Gas Corp., Ltd.). Ammonia Synthesis Gas. British Patent 685,962. Jan. 14. 1953. Chem. Abs., vol. 47, 1953. p. 6637.

Patent Abstracts

NH₃ synthesis gas is prepared by gasification of solid fuels containing volatile material with air or steam. The fuel is separated into 2 fractions-1 high and 1 low in volatile material. The high-volatile fraction is used to reduce Fe oxide, which is used in turn to obtain gases rich in H₂by treatment with steam. The oxidized low-volatile fraction is subjected to the water-gas shift reaction, and the product is mixed with the H₂-rich gas in the desired N₂ : H₂ ratio.