The deactivation of the decomposition catalyst of chemical-recovery ammonia

Abstract

The results of the monitoring of decomposition furnaces carried out for 5.5 years at OAO Metallurgical Combine Magnitogorsk has been analyzed. It was found that the rate of the irreversible deactivation of nickel catalyst G1–11 produced by the BASF company during the industry decomposition process of chemical-recovery ammonia under temperature higher than 1100°C is 0.39 dB/year (∼10% per year). The high activity of the modified catalyst KDA-18A (developed by NIAP, Novomoskovsk) makes it promising to use as the catalyst in the thermocatalytic decomposition of chemical-recovery ammonia. The new construction of a high temperature catalytic reactor allows for the use of the catalyst.