为深度降低NOx排放,某电厂采用双尺度低NOx燃烧技术对1000 MW超超临界双切圆锅炉燃烧系统进行了改造。改造后锅炉NOx排放质量浓度由改造前的320 mg/m3降至190 mg/m3左右,而锅炉经济性并未降低,其它主要性能参数均达到设计值要求。此次改造取得了预期的效果。 In order to reduce the NOx emission deeply, a power plant adopted a two-scale low NOx combustion technology to reform the combustion system of a 1000 MW ultra-supercritical double tangent boiler. After the transformation, the mass concentration of NOx emission of the boiler was reduced from 320 mg / m3 to 190 mg / m3 before the transformation, while the boiler economy did not decrease, and other key performance parameters reached the design value requirements. The transformation achieved the desired effect.