Experimental Study on the Ethane-Reburning Process at Several Air/Fuel Equivalence Ratios and High Temperatures

Abstract

An investigation of the ethane-reburning process was performed using an electrically heated test rig with a non-intrusive multi-point sampling system. The concentration profiles of CH4, H2, C2H2, O2, CO, CO2, NO, HCN, and NO + HCN at several air/fuel equivalence ratios were measured at various elevated temperatures. The experimental results show that, at high temperatures, the weakly reducing atmospheres associated with air/fuel equivalence ratios in the range of 0.96–0.99 are suitable for the reduction of NO to N2. Under these conditions, C2H2 is able to act as the main reducing component in the ethane-reburning process.