摘要
对丙烷的高温低氧空气燃烧及其火焰特性进行实验研究 ,并对其工业应用进行探讨。研究表明 :在助燃气流温度高于 80 0℃、含氧体积浓度低于 15 %的条件下燃烧 ,火焰体积明显增大 ;火焰边缘无稳定形态 ;火焰亮度减弱 ,颜色明显改变 ;含氧浓度越低 ,稳定燃烧所需助燃气流温度也越高。该种燃烧工业应用的关键在于用高效蓄热体吸收同炉温烟气显热以产生高温空气 。
An experimental study was conducted of the high-temperature and low-oxygen air burning of propane and its flame characteristics along with a discussion of its possible industrial applications. The results of the study indicate that when burning at a combustion-assisting air temperature in excess of 800 °C and oxygen-containing volume concentration lower than 15% the flame volume was markedly enlarged. Meanwhile, the flame boundary was found to be unstable with the flame luminosity being weakened and its color significantly changed. The lower the oxygen concentration, the higher will be the temperature of the combustion-assisting air, which is needed for achieving a stable combustion. The key to the industrial application of this new combustion process consists in the use of a highly effective regenerator to absorb the latent heat of gases with the same temperature as that of the furnace, thereby producing the high-temperature air. In the meanwhile, low oxygen-concentration airflow is also being created in the furnace.
出处
《热能动力工程》
EI
CAS
CSCD
北大核心
2001年第6期615-617,共3页
Journal of Engineering for Thermal Energy and Power
