Lingyan Zeng

TL;DR: In this article, the authors proposed an eccentric-swirl-secondary-air combustion technology for a 300-MWe anthracite and down-fired boiler equipped with swirl burners, which was retrofitted with the previously proposed deep air-staging combustion technology to reduce particularly high NOx emissions.

TL;DR: To solve the water wall overheating in lower furnace, and further reduce NOx emissions and carbon in fly ash, continuous improvement of the previously proposed multiple injection and multiple staging combustion (MIMSC) technology lies on three aspects: along the furnace arch breadth, changing the previously centralized 12 burner groups into a more uniform pattern with 24 burners.

TL;DR: In this article, a new combustion system has been applied to a 300MW e down-fired boiler with swirl burners to reduce NO x emissions, and the results showed that the ignition distance increased with decreasing load, especially as the load decreased from 250 MW e to 180 MW e.

TL;DR: In this article, a breakthrough idea was proposed to significantly increase the primary air velocity by reducing the damper opening of vent air, and the effects of the high primary air velocities on coal char burnout and NOx formation were investigated via industrial experiments.

TL;DR: In this article, a new combustion system was applied to a 300-MWe Babcock & Wilcox (B&W) furnace to achieve significant reductions in NOx emissions without increasing the levels of unburnt carbon in the fly ash.