HCN is produced during combustion of chars from different rank coals.That means HCN oxidation is a pathway for N2O formation during char combustion.

• 在不同煤种的焦炭燃烧实验中，均有HCN在烟气中生成，因此HCN的气相氧化过程是焦炭氮向N2O转化的一条途径。