Patent ID: 9581332
Date: 2017-02-28
CPC Classifications: F23C,F23N

Claim:
1. A burner combustion method in which at least two burners are disposed opposite each other in a furnace so as to cause combustion, the method comprising: cyclically changing at least one of a flow rate of a fuel fluid and a flow rate of an oxidant fluid supplied to the respective burners, while cyclically changing a concentration of oxygen in the oxidant fluid thereby cyclically changing an oxygen ratio obtained by dividing a supply oxygen amount by a theoretically required oxygen amount, whereby, the burners are made to cause combustion in a cyclical oscillation state, wherein with respect to the cyclical change in an oscillation state of the burners, a phase difference is provided between a cyclical change in oxygen ratio and oxygen concentration of at least one burner and cyclical changes in oxygen ratio and oxygen concentration of other burners, and a phase difference in the cyclical change between the oxygen ratio and oxygen concentration of the burners disposed opposite each other is π.