02325nab a2200193 4500 20260520000827.0 260224s2009 xxu Research of low NOx combustion with large -angle counter flow of a fuel-rich jet and its particle-dynamics anemometer (PDA) experiment ene. 2009 24/07/2009 ; 24/07/2009 9 p. ; 744-753 Transcripción del resúmen publicado por el autor: On the basis of counter flow of primary air with fuel rich in company with overall air-staged technology, this paper introduces a new pulverized coal combustion technology that can realize low NOx emission, high combustion efficiency, slagging, and high-temperature corrosion prevention by employing overall air-staged combustion, large-angle counter flow of primary air with a fuel-rich jet and forming a partial area of high-temperature and high pulverized coal concentration in the furnace. To verify technical data, research has been conducted on a 1025 t/h tangential firing boiler adopting this technology and a three-dimensional particle-dynamics anemometer (PDA) is employed on this prototype for measurement of the characteristics of two-phase gas/particle flows in the burner area. The distribution of the particle concentration and size distribution of the primary air, as well as the gas/particle velocity field were obtained. The experiments also measure the flowing characteristics of over-fired air (OFA) and secondary air. The results show that, with counter flow of fuel-rich jet technology, more particles can be injected into the high-temperature side in the furnace, the concentration of the particle is higher at the high-temperature side than that near the water wall, and the particle concentration of large particles is also lower near the water wall. The research shows that the counter-flow technology combined with overall air-staged technology of the tangential firing boiler can realize low NOx emission and high efficiency combustion and can prevent slagging on the surface of the water wall and high-temperature corrosion. Energy & fuels 23 ARTICULO Lin, Zhengchun 40845 Fan, Weidong 40844 Li, Youyi 40846 170190 170190 0 0 0 0 238009 BAAB BAAB 2026-03-05 200045017 0 200045017 2026-03-05 15:12:27 2026-03-05 ARTICULO