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.

Investigation on NO reduction behavior within complex atmosphere during pilot ignition of low calorific gas

“…In contrast, an inhibiting effect was also observed in some reports, 13 and there it was mainly attributed to the decreased CH 2 formation rate from CO 2 addition. The situation for CO addition is similar, where both no influence 14,15 and an inhibition effect 16 were experimentally observed. Glarborg et al 17 also found that CO could enhance the NO reduction under the condition of H 2 O presence.…”

5th Sino-Australian Symposium on Advanced Coal and Biomass Utilisation Technologies

“…Qiao et al (10.1021/acs.energyfuels.5b02272) assess the energy required for ethanol-enhanced steam reforming incorporating carbon capture via Li 4 SiO 4 . Wang and Zhang (10.1021/acs.energyfuels.5b02238) study the high-temperature ethane reburning at various air/fuel equivalence ratios.…”