摘要
采用立式煤粉燃烧电阻炉装置,研究了燃烧气氛(O_2/N_2和O_2/CO_2气氛)、石英砂质量分数和氧气体积分数对半焦燃烧时N_2O生成特性的影响.结果表明:燃烧气氛对N_2O收率无明显影响,随着温度升高,N_2O收率显著降低(最大降幅为1.96%);添加石英砂对N_2O收率影响明显,在石英砂质量分数为50%,温度为1 300℃时,N_2O收率较未添加石英砂时增加约2.5%;N_2O收率在低氧气体积分数(20%)时受氧气体积分数影响,在高氧气体积分数(40%)时受焦炭颗粒数量影响.
The characteristics of N_2O were studied in the furnace vertical device under different atmospheres（O_2/N_2 and O_2/CO_2 atmosphere）,different mass ratio of quartz sand and different volume fraction of oxygen.The result shows that the atmospheres have no effect on the N_2O yield,with the temperature increasing,the N_2O yield decrease significantly（the maximum drop is about 1.96%）;after the mass ratio of quartz sand changing,the N_2O yield is influenced obviously,when the mass ratio of quartz sand is 50%,the N_2O yield at 1 300 ℃increase about2.5% compared with adding no quartz sand;under the condition of low oxygen volume fraction（20%）,N_2O yield is affected by the oxygen volume fraction,but under the condition of high oxygen volume fraction（40%）,it is affected by the number of coke particles.
出处
《煤炭转化》
CAS
CSCD
北大核心
2016年第4期61-64,共4页
Coal Conversion
基金
内蒙古自治区科技计划项目(20130310)
内蒙古自治区高等学校创新团队研究计划项目(NMGIRT1406)
关键词
低阶煤
半焦
燃烧
N2O收率
立式管式炉
low-rank coal
semi-coke
combustion
N2O yield
vertical tube furnace
