摘要
对于某些燃用高挥发份、高灰份且易结渣煤的电站锅炉，在正常运行中，频繁发生因炉膛上部较大体积的掉渣或塌灰而造成锅炉瞬间灭火事故，在排除其它可能的因素外，提出了炉膛下部发生可燃气体爆燃的推测，并结合锅炉的实际运行工况对发生爆燃引发灭火的机理进行了初步分析。能够比较合理地解释灭火的原因，并具有新颖的理论价值，对采取相应的解决措施有比较重要的参考价值。
During the normal operation of utility boilers firing high volatile, high
ash and slagging prone coals there often occurs a sudden flameout triggered by the collapsing
of sizable slag blocks at the upper portion of the boiler furnace. After ruling out other possible
factors the authors suggest that there is a possibility of flammable gas explosion burning at the
lower portion of the furnace. In connection with the actual operating conditions of a boiler a
preliminary analysis has been conducted of the mechanism of flameout sparked by gas
explosion burning. This analysis makes it possible to identify the cause of flame out in a
relatively rational way. From a new theoretical perspective a sound basis is provided for
adopting proper measures to cope with the flameout problems.
出处
《热能动力工程》
CAS
CSCD
北大核心
1999年第4期302-303,共2页
Journal of Engineering for Thermal Energy and Power
关键词
电站锅炉
爆燃
机理分析
落渣
塌灰
utility boiler,
flammable gas explosion, analysis
