高浓度煤粉燃烧过程中氮氧化物生成的研究

An Investigation of NO x formation Resulting from the Burning of High concentration Pulverized Coal

在滴管炉和一维炉中对煤粉燃烧过程中ＮＯｘ的排放进行了测量，并对ＮＯｘ的生成与分解过程进行了化学动力学模拟。结果表明，高浓度煤粉燃烧过程中ＮＯｘ的排放量明显减少，其主要原因一是偏离化学当量比的燃烧，二是由于均相着火模式下产生的大量ＣＯ对ＮＯｘ有分解作用。

O x emissions were measured during the process of pulverized coal burning with the formation and disassociation of NO x undergoing a chemico dynamics simulation. The simulation results show that the major cause of the significant decrease in NO x emissions during the combustion of high concentration pulverized coal consists in a combustion deviating from the stoichiometric ratio. The disassociation action on NO x of a huge amount of CO produced under a uniform phase ignition mode can be explained as the second cause.