摘要
使用FLUENT软件对超低浓度甲烷气体在壁面涂有Pt/Al2O3催化剂的蜂窝型燃烧器微通道中的催化燃烧情况进行数值模拟,计算分析入口甲烷浓度,催化壁面温度以及燃料入口流速对甲烷转化率的影响。结果表明,随着入口甲烷浓度的增大,催化壁面温度的升高和燃料入口速度的降低,甲烷转化率会增大。当燃料入口流速为0.1m/s,甲烷体积浓度为1%,壁面温度为950K时,甲烷转化率可以达到97.0%。
This paper used FLUENT to simulate the Catalytic combustion characteristics of extremely low concentration methane in microchannel of honeycomb combustor which was coated with catalyst Pt/Al2O3.It analyzed the effect of inlet CH4 concentration,temperature of catalyst wall and inlet fuel velocity on CH4 conversion ratio.The results show that CH4 conversion rate is increases with the increase of inlet CH4 concentration and catalyst wall temperature and the decrease of inlet fuel velocity.When inlet fuel velocity is 0.1 m/s,CH4 volume concentration is 1%,catalyst wall temperature is 950 K,the conversion ratio of CH4 can achieve to 97.0%.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第4期60-64,共5页
Journal of Chongqing University
基金
重庆市自然科学基金重点项目(CSTC
2009BA6067)
关键词
矿井通风瓦斯
催化燃烧
甲烷
转化率
数值模拟
浓度
mine ventilation gas
catalytic combustion
CH4
conversion ratio
numerical simulation
concentration
