Air staging and reburning mechanisms for NOx abatement in a laboratory coal combustor

Ammonia conversion and NOx formation in laminar coflowing nonpremixed methane-air flames

“…The fraction of each species formed remains the subject of ongoing research [7,8]; however, in volatiles from biomass feedstocks, the ammonia concentration is orders of magnitude higher than those of other fuel-nitrogen species [9]. Thus, we use an ammonia-seeded fuel for the present study.…”

Burning low volatile fuel in tangentially fired furnaces with fuel rich/lean burners

“…Many researchers have reported the air staging or combined air and fuel staging (reburning) as a means to reduce NO x emissions [2][3][4][5][6][7][8]. Some www.elsevier.com/locate/enconman primary air is separated into fuel rich/lean streams to provide an air staging condition [9][10][11].…”

Role of char during reburning of nitrogen oxides. Ninth quarterly report, October 1, 1995--December 31, 1995

“…What we have observed about the internal surface areas may be very significant to the Figure 1 reflect poisoning, and, more importantly, the lignite char activity is to diminish after 0.2 s. In the study of air staging, Mereb and Wendt (1994) observed sharp decrease in NO concentration during the first 1.5 s of burning of bituminous coal at SR = 0.83. They also observed that the variation of the concentration of total exit nitrogen species in NO / lignite reaction is lower than that of bituminous coal in the first 1.8 s, but it undergoes a sharp fall between 1.8 and 2.4 s. It would certainly be interesting to investigate if these variations in NO are related to the changes in pore structures in the hture studies.…”