Abstract: The reason of flameout of the 300MW tower type boiler in Yaomeng Power Generation Company Limited was analyzed. Based on the coldstate kinetic field experiment and targeted combustion adjustment experiment, the origin of the problem was found. According to the actual situation of the power plant, a rational operation adjustment scheme and preventive measures were put forward. The practical result shows that the boiler combustion condition was improved obviously, and the flameout fault does not occur again.

Key words: tower type boiler, flameout, cold-state kinetic field, stability of combustion