Fuel NOX predominates the NOX formed and emitted from combustion of pulverized coal. The volatile N is the main source of fuel NOX rather than coke N.

• 煤粉燃烧生成的NO_x主要是燃料NO_x,与焦碳N(不挥发性N)相比,挥发性N是转化成燃料NO_x的主要部分。