A combination effect of reburn, post-flame air and acoustic excitation on NOx reduction

► We studied the effect of acoustic on NOx generation in premixed combustion. ► We studied the combination effect of reburn, post-flame air, and acoustic. ► Using reburn with post air and acoustic reduced the NOx production significantly. ► Acoustic wave itself was found to have insignificant effects on NOx below 1500 ppm. ► The 50 Hz acoustic wave had the most significant effect on NOx and CO reduction.