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针对300 MW机组配用的四角切圆燃烧煤粉锅炉,结合O2/CO2燃烧技术特点,运用数值模拟的方法,探索四角切圆燃烧煤粉锅炉运行中NOx生成规律及影响因素。结果分析表明:O2/CO2燃烧技术能够使得烟气中CO2浓度达到90%以上,能够方便的回收和封存CO2,以减少温室效应;O2/CO2燃烧技术能够使用劣质煤,燃料范围广泛;O2/CO2气氛下NOx排放量明显减少。
Aiming at the tangential firing pulverized coal fired boiler equipped for 300 MW units, combined with the characteristics of O2 / CO2 combustion technology, the numerical simulation method was used to explore the law and influencing factors of NOx formation during the operation of the tangentially fired pulverized coal fired boiler. The results show that the O2 / CO2 combustion technology can make the CO2 concentration in flue gas reach more than 90%, which can conveniently recover and seal CO2 to reduce the greenhouse effect; O2 / CO2 combustion technology can use inferior coal with a wide range of fuel; O2 / NOx emissions significantly reduced CO2 atmosphere.