In the fixed bed reactor with a quartz tube

the effects of NO concentration

soot species

CO2

O2 concentration in the feed gas on the non-catalyzed reaction between soot and NO were investigated.The experimental materials individually came from the soot formed in diffusion flame in natural gas

candle or butane

and a kind of bituminous coal coke was also taken as experimontal material.The results showed that the reaction between soot and NO proceeded well with a sharp initial reaction temperature.The reaction between natural gas soot and NO showed a higher rate of NO reduction and a lower initial reaction temperature than the other soot species.The initial reaction temperature was higher with increasing inlet NO concentration.The presence of O2 in the feed gas lowered the initial reaction temperature and the maximum reaction temperature of the soot reaction with NO.The presence of CO2 in the feed gas had no effect on the reaction of natural gas soot with NO

but resulted in a lower initial reaction temperature of candle soot and coke reaction with NO

and separated the whole reaction process into two stages.