摘要
以液化气层流预混火焰为实验研究对象。搭建了燃烧试验台,并在火焰两侧施加放电磁场,测定磁场强度,并测量了电磁场中层流预混火焰燃烧温度和NOx浓度,分析了在不同磁场强度下层流预混火焰燃烧特性及NOx生成特性。结果显示,在电磁场的作用下,火焰温度升高、直径略微增加、高度有所降低,同时电磁场降低火焰中N、HCN、CN等离子和离子团与氧的碰撞几率,导致NOx浓度下降,最大下降为2.998 mg/m3。
With the laminar flow premixed flame of liquefied gas serving as the object of study,set up was a combustion test rig with an electromagnetic field being applied at both sides of the flame to determine the intensity of the field,measure the combustion temperature of the laminar flow premixed flame in the electromagnetic field and NOxconcentration and analyze the laminar flow premixed flame combustion characteristics at various intensities in the magnetic field and production characteristics of NOx. It has been found that under the action of the electromagnetic field,the flame temperature will rise,the flame diameter will slightly increase,its height will somewhat decrease and at the same time,the electromagnetic field will reduce the possibility of N,HCN and CN etc. ion and ion groups in the flame to collide with oxygen,resulting in a decline of NOxconcentration,maximally reduced by 2. 998 mg / m3.
出处
《热能动力工程》
CAS
CSCD
北大核心
2014年第3期284-289,343-344,共6页
Journal of Engineering for Thermal Energy and Power
基金
内蒙古自然科学基金资助项目(2011MS0707)
关键词
预混火焰
层流燃烧
电磁场
热力型NOx
premixed flame,laminar flow combustion,electromagnetic field,thermal type NOx
