A three-dimensional numerical simulation method is used to analyze the temperature field and heat load distribution of a 600 MW supercritical pulverized-coal wall-tangential combustion utility boiler. The relationship model between the location of the furnace flame center and the wall temperature of the outlet of water wall is established

and a method to judge the position of the flame center by using existing water wall temperature measuring points is proposed. The results show that the calculated value of this study is in good agreement with the actual operation of the boiler

which shows that the calculation model adopted in this study is basically correct

and the calculation results are accurate and reliable. In addition

the proposed method for determining the position of the flame center is simple and reliable. It uses only the existing boiler wall temperature measurement point which has low investment and strong engineering practicability. This judgment method can help the operators to monitor the furnace center position of the furnace at any time

and then take the appropriate adjustment measures to ensure the stable combustion of the furnace

and finally effectively improve the safety and economy of the unit.