焦炭流化床燃烧条件下氧化亚氮生成过程的实验研究

Experimental Investigation of Nitrous Oxide Formation During the Combustion of Coke in a Fluidized Bed

在小型流化床实验台上对一种无烟煤焦炭燃烧过程中氧化亚氮的生成途径进行了实验研究 ,实验结果表明 ,在焦炭燃烧过程中HCN的氧化反应是焦炭氮向N2 O转化的一条途径。同时 ,NO与焦炭表面的多相反应也是N2 O的一条生成途径。HCN的析出是焦炭燃烧过程中进一步脱挥发份的结果 ,当焦炭脱挥发份过程结束后 ,N2

On the test rig of a small-sized fluidized bed an experimental research was conducted of the formation of nitrous oxide during the combustion of anthracite coke. It has been found that the oxidation reaction of HCN during the combustion of the coke represents an avenue of conversion of coke nitrogen to N2O. At the same time the multi-phase reaction of NO and coke surface is also a kind of generation path of N2O. The separation-out of HCN is a result of the further devolatilization during the combustion of coke. On completion of the coke devolatilization process N2O has originated from the gas-solid multi-phase reaction of NO and coke surface.