STUDY OF COMBINED PROCESSES OF THERMAL-DECOMPOSITION AND REDUCTION OF NITROGEN-OXIDES BY AMMONIA

Theoretical and numerical studies and calculations of the decrease in nitrogen oxide content in the combustion products of a natural gas along the gas flow train of a high-temperature setup are performed for combined processes of thermal decomposition and reduction by ammonia. The effect of the cooling mode, concentration conditions, and conditions of ammonia injection on the degree of nitrogen oxide reduction is revealed. The method for determining the optimum conditions for the combined processes of thermal decomposition and reduction by ammonia is proposed. The conditions permit a reduction of nitrogen oxide emissions down to the maximum permissible level.