An Experimental Observation of the Thermal Effects and NO Emissions during Dissociation and Oxidation of Ammonia in the Presence of a Bundle of Thermocouples in a Vertical Flow Reactor

Ammonia (NH3) dissociation and oxidation in a cylindrical quartz reactor has been experimentally studied for various inlet NH3 concentrations (5%, 10%, 15%) temperatures between 700 K 1000 K. The thermal effects during both (endothermic) (exothermic) were observed using bundle of thermocouples positioned along the central axis reactor, while corresponding conversions nitrogen oxides emissions determined by analysing gas composition exit stream. A stronger endothermic effect, as indicated greater temperature drop dissociation, was feed concentration increased. During oxidation, predominantly exothermic effect with increasing also evident; however, it apparent that occurred near inlet, preceding downstream H2 oxidation. For conversion increased decreasing initial concentration. Significant levels NOX which temperature. From experimental results, is speculated stainless-steel thermocouple may have catalysed thus changed reaction chemistry