Impact of air staging along furnace height on NOx emissions from pulverized coal combustion

Penetration behavior of opposed rows of staggered secondary air jets depending on jet penetration coefficient and momentum flux ratio

“…Nasserzadeh et al indicated that the modification of the secondary air orifice can help reduce emissions and optimize the overall plant performance of the incinerator [4,5]. The reduction of NOx emissions has also been achieved on the basis of the air staging conditions in the wall-fired boiler [6][7][8]. Some researchers described the importance of the secondary air jet configuration on the flow path and temperature distributions through CFD analyses [8][9][10][11].…”

Effect of secondary air mass flow rate on the airflow and combustion characteristics and NOx formation of the low‐volatile coal‐fired swirl burner

“…Under deep air staging, there was a less impact of R 90 on NO x emission. For certain coals, to achieve the best NO x reduction, there needed an optimization of R 90 for the furnace conditions . Weng et al investigated the combustion characteristics of anthracite, lean coal, and bituminous coal and their blends in a one‐dimensional sedimentation furnace.…”

Effect of angle of arch-supplied overfire air on flow, combustion characteristics and NO emissions of a down-fired utility boiler

“…A down-fired boiler is designed to burn hard-to-burn coal and is widely used in China. However, NO x emissions of the down-fired boiler are significantly higher than those of other types of boiler and are at times as high as 2000 mg/m 3 [3,4]. The use of reasonable low-NO x combustion technology and tail-gas denitration technology to reduce flue gas NO x emissions is a more cost-effective approach.…”