O2/CO2 循环燃烧技术不仅便于回收烟气中 CO2,还能大幅度减少 SO2 和 NOx 排放.在国内第一台中试规模O2/CO2 循环燃烧台架上,对炉膛内部不同燃烧区域和尾部烟气的 NOx 排放进行研究.结果表明,本实验台架燃烧一段是 NOx 排放的重点提升区,Air 气氛下 NOx 浓度上升了 109.7%,在 O2/CO2 和 O2/RFG 气氛下 NOx 浓度没有明显增加,分别上升 23.2% 和 21.6%,燃烧二段 NOx 浓度基本没发生变化.尾部烟气中,与 Air 工况相比,O2/CO2 循环燃烧工况下脱硝率为 83.41%,另外喷钙对 NOx 的脱除也有不同程度的提升.
s, 2002, 43(4): 290-290[4]Hu Y, Naito S, Kobayashi N, et al. CO2, NOx and SO2 Emissions from the Combustion of Coal with High Oxygen Concentration Gases. Fuel, 2000, 79(15): 1925-1932[5]Okazaki K, Ando T. NOx Reduction Mechanism in Coal Combustion with Recycled CO2. Energy, 1997, 22(2/3):207-215WANG Hong, DONG Xue-Wen. NOx Formation Characteristics of Coal in O2/CO2 Mixture. Journal of Fuel Chemistry and Technology, 2001, 29(5): 458-462[7]Okazaki K, Ando T. NOx Reduction Mechanism in Coal Combustion with Recycled CO2. Fuel and Energy Abstracts, 1997, 38(6): 423-423
参考文献
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