摘要
以合成气旋流扩散燃烧为研究对象,利用平面激光诱导荧光技术研究了在氮气稀释作用下,CH4、H2、CO及合成气火焰的燃烧特性.实验发现,CH4、H2燃烧时,氮气的掺混仅改变火焰形状,不影响其燃烧的稳定性,CO燃烧稳定性最差,导致合成气火焰易受氮气稀释作用的影响,但由于H2的存在,实验工况范围内的氮气稀释量下,合成气火焰仍能够在燃料喷嘴附近区域较为稳定地燃烧,而CH4则呈现出升举火焰的特征.
Planar laser induced fluorescence（PLIF）technique was adopted to investigate a swirling non-premixed flame,aiming to study the combustion characteristics of CH4,H2,CO and syngas with nitrogen dilution.Experi-mental results show that the addition of nitrogen only affects the shapes of CH4 and H2 flame,with little effects on combustion stability.However,since CO burns with least stability,syngas flame demonstrates some level of insta-bility with nitrogen dilution.On the other hand,under the current experimental condition,syngas burns rather stably just above fuel injector,and CH4 shows the features of lifted flame.
出处
《燃烧科学与技术》
EI
CAS
CSCD
北大核心
2011年第2期142-146,共5页
Journal of Combustion Science and Technology
基金
国家重点基础研究发展计划(973)资助项目(2007CB210102)
关键词
氮气稀释
合成气
平面激光诱导荧光
nitrogen dilution
syngas
planar laser induced fluorescence（PLIF）
