Reaction kinetics of the downstream MHD process gas before secondary combustion

The reaction kinetics of the MHD downstream process gas before secondary combustion are examined here. Emphasis is placed on the decomposition of nitrogen oxide into ammonia fractions and hydrogen cyanide but sulfur and carbon containing species reactions are also considered. The shift in species concentrations at the refractory furnace and secondary combustor inlet gas sample probes are modeled using the "Premixed One-Dimensional Flame" (PROF) code. In addition, a heat transfer analysis of the sample probe is involved. This was evaluated so that a more accurate analysis of the actual combustion gas in the flow train could be established from the experimental data collected during the test runs. The results gathered from this code were analyzed with experimental data collected during the LMF3B test series. The PROF code modeled the nitrogen species reactions with reasonable accuracy while some discrepancy was seen between the theoretical and experimental results involving the sulfur and carbon species.